Merge branch 'recovery-firmware' of JF/PineTime into develop

2021-03-07 18:45:35 +01:00 · 2021-03-07 18:45:35 +01:00 · c5dc4c55a7
parent ada9425357 5845fd98ba
commit c5dc4c55a7
49 changed files with 3625 additions and 109 deletions
--- a/.idea/codeStyles/Project.xml
+++ b/.idea/codeStyles/Project.xml
@ -8,30 +8,10 @@
      <option name="INDENT_DIRECTIVE_AS_CODE" value="true" />
      <option name="SPACE_BEFORE_TEMPLATE_DECLARATION_LT" value="true" />
      <option name="SPACE_BEFORE_POINTER_IN_DECLARATION" value="false" />
-      <!-- Disabled until clang-format can do it <option name="SPACE_AFTER_POINTER_IN_DECLARATION" value="true" /> -->
+      <option name="SPACE_AFTER_POINTER_IN_DECLARATION" value="true" />
      <option name="SPACE_BEFORE_REFERENCE_IN_DECLARATION" value="false" />
      <option name="SPACE_AFTER_REFERENCE_IN_DECLARATION" value="true" />
    </Objective-C>
-    <Objective-C-extensions>
-      <rules>
-        <rule entity="NAMESPACE" visibility="ANY" specifier="ANY" prefix="" style="PASCAL_CASE" suffix="" />
-        <rule entity="MACRO" visibility="ANY" specifier="ANY" prefix="" style="SCREAMING_SNAKE_CASE" suffix="" />
-        <rule entity="CLASS" visibility="ANY" specifier="ANY" prefix="" style="PASCAL_CASE" suffix="" />
-        <rule entity="STRUCT" visibility="ANY" specifier="ANY" prefix="" style="CAMEL_CASE" suffix="" />
-        <rule entity="ENUM" visibility="ANY" specifier="ANY" prefix="" style="PASCAL_CASE" suffix="" />
-        <rule entity="ENUMERATOR" visibility="ANY" specifier="ANY" prefix="" style="PASCAL_CASE" suffix="" />
-        <rule entity="TYPEDEF" visibility="ANY" specifier="ANY" prefix="" style="CAMEL_CASE" suffix="" />
-        <rule entity="UNION" visibility="ANY" specifier="ANY" prefix="" style="CAMEL_CASE" suffix="" />
-        <rule entity="CLASS_MEMBER_FUNCTION" visibility="ANY" specifier="ANY" prefix="" style="PASCAL_CASE" suffix="" />
-        <rule entity="STRUCT_MEMBER_FUNCTION" visibility="ANY" specifier="ANY" prefix="" style="CAMEL_CASE" suffix="" />
-        <rule entity="CLASS_MEMBER_FIELD" visibility="ANY" specifier="ANY" prefix="" style="CAMEL_CASE" suffix="" />
-        <rule entity="STRUCT_MEMBER_FIELD" visibility="ANY" specifier="ANY" prefix="" style="CAMEL_CASE" suffix="" />
-        <rule entity="GLOBAL_FUNCTION" visibility="ANY" specifier="ANY" prefix="" style="PASCAL_CASE" suffix="" />
-        <rule entity="GLOBAL_VARIABLE" visibility="ANY" specifier="ANY" prefix="" style="CAMEL_CASE" suffix="" />
-        <rule entity="PARAMETER" visibility="ANY" specifier="ANY" prefix="" style="CAMEL_CASE" suffix="" />
-        <rule entity="LOCAL_VARIABLE" visibility="ANY" specifier="ANY" prefix="" style="CAMEL_CASE" suffix="" />
-      </rules>
-    </Objective-C-extensions>
    <codeStyleSettings language="ObjectiveC">
      <option name="RIGHT_MARGIN" value="140" />
      <option name="IF_BRACE_FORCE" value="3" />
@ -47,8 +27,5 @@
        <option name="KEEP_INDENTS_ON_EMPTY_LINES" value="true" />
      </indentOptions>
    </codeStyleSettings>
-    <clangFormatSettings>
-      <option name="ENABLED" value="true" />
-    </clangFormatSettings>
  </code_scheme>
 </component>
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@ -41,6 +41,10 @@ if(DEFINED USE_DEBUG_PINS AND USE_DEBUG_PINS)
  add_definitions(-DUSE_DEBUG_PINS)
 endif()

+if(BUILD_DFU)
+  set(BUILD_DFU true)
+endif()
+
 message("BUILD CONFIGURATION")
 message("-------------------")
 message("    * Version : " ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH})
@ -62,6 +66,11 @@ if(USE_DEBUG_PINS)
 else()
  message("    * Debug pins : Disabled")
 endif()
+if(BUILD_DFU)
+  message("    * Build DFU (using adafruit-nrfutil) : Enabled")
+else()
+  message("    * Build DFU (using adafruit-nrfutil) : Disabled")
+endif()

 set(VERSION_EDIT_WARNING "// Do not edit this file, it is automatically generated by CMAKE!")
 configure_file(${CMAKE_CURRENT_SOURCE_DIR}/src/Version.h.in ${CMAKE_CURRENT_SOURCE_DIR}/src/Version.h)
--- a/doc/buildAndProgram.md
+++ b/doc/buildAndProgram.md
@ -26,7 +26,10 @@ CMake configures the project according to variables you specify the command line
 **NRFJPROG**|Path to the NRFJProg executable. Used only if `USE_JLINK` is 1.|`-DNRFJPROG=/opt/nrfjprog/nrfjprog`
 **GDB_CLIENT_BIN_PATH**|Path to arm-none-eabi-gdb executable. Used only if `USE_GDB_CLIENT` is 1.|`-DGDB_CLIENT_BIN_PATH=/home/jf/nrf52/gcc-arm-none-eabi-9-2019-q4-major/bin/arm-none-eabi-gdb`
 **GDB_CLIENT_TARGET_REMOTE**|Target remote connection string. Used only if `USE_GDB_CLIENT` is 1.|`-DGDB_CLIENT_TARGET_REMOTE=/dev/ttyACM0`
+**BUILD_DFU (\*)**|Build DFU files while building (needs [adafruit-nrfutil](https://github.com/adafruit/Adafruit_nRF52_nrfutil)).|`-BUILD_DFU=1`

+####(*) Note about **BUILD_DFU**:
+DFU files are the files you'll need to install your build of InfiniTime using OTA (over-the-air) mecanism. To generate the DFU file, the Python tool [adafruit-nrfutil](https://github.com/adafruit/Adafruit_nRF52_nrfutil) is needed on your system. Check that this tool is properly installed before enabling this option.

 #### CMake command line for JLink
 ```
@ -45,11 +48,14 @@ cmake -DARM_NONE_EABI_TOOLCHAIN_PATH=... -DNRF5_SDK_PATH=... -DUSE_OPENOCD=1 -DG

 ### Build the project
 During the project generation, CMake created the following targets:
- FLASH_ERASE : mass erase the flash memory of the NRF52.
- FLASH_pinetime-app : flash the firmware into the NRF52.
- pinetime-app : build the standalone (without bootloader support) version of the firmware.
- pinetime-mcuboot-app : build the firmware with the support of the bootloader (based on MCUBoot).
- pinetime-graphics : small firmware that writes the boot graphics into the SPI flash.
+- **FLASH_ERASE** : mass erase the flash memory of the NRF52.
+- **FLASH_pinetime-app** : flash the firmware into the NRF52.
+- **pinetime-app** : build the standalone (without bootloader support) version of the firmware.
+- **pinetime-recovery** : build the standalone recovery version of infinitime (light firmware that only supports OTA and basic UI)
+- **pinetime-recovery-loader** : build the standalone tool that flashes the recovery firmware into the external SPI flash
+- **pinetime-mcuboot-app** : build the firmware with the support of the bootloader (based on MCUBoot).
+- **pinetime-mcuboot-recovery** : build pinetime-recovery with bootloader support
+- **pinetime-mcuboot-recovery-loader** : build pinetime-recovery-loader with bootloader support

 If you just want to build the project and run it on the Pinetime, using *pinetime-app* is recommanded. See [this page](../bootloader/README.md) for more info about bootloader support.

@ -64,8 +70,11 @@ Binary files are generated into the folder `src`:
 - **pinetime-app.map** : map file
 - **pinetime-mcuboot-app.bin, .hex and .out** : firmware with bootloader support in bin, hex and out formats.
 - **pinetime-mcuboot-app.map** : map file
- - **pinetime-graphics.bin, .hex and .out** : firmware for the boot graphic in bin, hex and out formats.
- - **pinetime-graphics.map** : map file
+ - **pinetime-mcuboot-app-image** : MCUBoot image of the firmware
+ - **pinetime-mcuboot-ap-dfu** : DFU file of the firmware
+
+The same files are generated for **pinetime-recovery** and **pinetime-recoveryloader** 
+
 
 ### Program and run
 #### Using CMake targets
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@ -17,7 +17,8 @@ RUN apt-get update -qq \
 # aarch64 packages
      libffi-dev \
      libssl-dev \
-      python3-dev \ 
+      python3-dev \
+      python \
    && rm -rf /var/cache/apt/* /var/lib/apt/lists/*;

 RUN pip3 install adafruit-nrfutil
--- a/docker/build.sh
+++ b/docker/build.sh
@ -63,6 +63,7 @@ CmakeGenerate() {
    -DUSE_OPENOCD=1 \
    -DARM_NONE_EABI_TOOLCHAIN_PATH="$TOOLS_DIR/$GCC_ARM_VER" \
    -DNRF5_SDK_PATH="$TOOLS_DIR/$NRF_SDK_VER" \
+    -DBUILD_DFU=1 \
    "$SOURCES_DIR"
  cmake -L -N .
 }
--- a/docker/post_build.sh.in
+++ b/docker/post_build.sh.in
@ -9,15 +9,12 @@ export PROJECT_VERSION="@PROJECT_VERSION_MAJOR@.@PROJECT_VERSION_MINOR@.@PROJECT
 mkdir -p "$OUTPUT_DIR"

 cp "$SOURCES_DIR"/bootloader/bootloader-5.0.4.bin $OUTPUT_DIR/bootloader.bin
+cp "$BUILD_DIR/src/pinetime-mcuboot-app-image-$PROJECT_VERSION.bin" "$OUTPUT_DIR/pinetime-mcuboot-app-image-$PROJECT_VERSION.bin"
+cp "$BUILD_DIR/src/pinetime-mcuboot-app-dfu-$PROJECT_VERSION.zip" "$OUTPUT_DIR/pinetime-mcuboot-app-dfu-$PROJECT_VERSION.zip"

-"$TOOLS_DIR"/mcuboot/scripts/imgtool.py create --version 1.0.0 \
-    --align 4 --header-size 32 --slot-size 475136 --pad-header \
-    "$BUILD_DIR/src/pinetime-mcuboot-app-$PROJECT_VERSION.bin" \
-    "$OUTPUT_DIR/image-$PROJECT_VERSION.bin"
+cp "$BUILD_DIR/src/pinetime-mcuboot-recovery-loader-image-$PROJECT_VERSION.bin" "$OUTPUT_DIR/pinetime-mcuboot-recovery-loader-image-$PROJECT_VERSION.bin"
+cp "$BUILD_DIR/src/pinetime-mcuboot-recovery-loader-dfu-$PROJECT_VERSION.zip" "$OUTPUT_DIR/pinetime-mcuboot-recovery-loader-dfu-$PROJECT_VERSION.zip"

-adafruit-nrfutil dfu genpkg --dev-type 0x0052 \
-    --application "$OUTPUT_DIR/image-$PROJECT_VERSION.bin" \
-    "$OUTPUT_DIR/dfu-$PROJECT_VERSION.zip"

 mkdir -p "$OUTPUT_DIR/src"
 cd "$BUILD_DIR"
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@ -548,7 +548,58 @@ list(APPEND SOURCE_FILES
        components/heartrate/HeartRateController.cpp
        )

-list(APPEND GRAPHICS_SOURCE_FILES
+list(APPEND RECOVERY_SOURCE_FILES
+        BootloaderVersion.cpp
+        logging/NrfLogger.cpp
+        displayapp/DisplayAppRecovery.cpp
+
+        main.cpp
+        drivers/St7789.cpp
+        drivers/SpiNorFlash.cpp
+        drivers/SpiMaster.cpp
+        drivers/Spi.cpp
+        drivers/Watchdog.cpp
+        drivers/DebugPins.cpp
+        drivers/InternalFlash.cpp
+        drivers/Hrs3300.cpp
+        components/battery/BatteryController.cpp
+        components/ble/BleController.cpp
+        components/ble/NotificationManager.cpp
+        components/datetime/DateTimeController.cpp
+        components/brightness/BrightnessController.cpp
+        components/ble/NimbleController.cpp
+        components/ble/DeviceInformationService.cpp
+        components/ble/CurrentTimeClient.cpp
+        components/ble/AlertNotificationClient.cpp
+        components/ble/DfuService.cpp
+        components/ble/CurrentTimeService.cpp
+        components/ble/AlertNotificationService.cpp
+        components/ble/MusicService.cpp
+        components/ble/BatteryInformationService.cpp
+        components/ble/ImmediateAlertService.cpp
+        components/ble/ServiceDiscovery.cpp
+        components/ble/NavigationService.cpp
+        components/ble/HeartRateService.cpp
+        components/firmwarevalidator/FirmwareValidator.cpp
+        drivers/Cst816s.cpp
+        FreeRTOS/port.c
+        FreeRTOS/port_cmsis_systick.c
+        FreeRTOS/port_cmsis.c
+
+        systemtask/SystemTask.cpp
+        drivers/TwiMaster.cpp
+        components/gfx/Gfx.cpp
+        displayapp/icons/infinitime/infinitime-nb.c
+        components/rle/RleDecoder.cpp
+        components/heartrate/HeartRateController.cpp
+        heartratetask/HeartRateTask.cpp
+        components/heartrate/Ppg.cpp
+        components/heartrate/Biquad.cpp
+        components/heartrate/Ptagc.cpp
+        components/motor/MotorController.cpp
+        )
+
+list(APPEND RECOVERYLOADER_SOURCE_FILES
        # FreeRTOS
        FreeRTOS/port.c
        FreeRTOS/port_cmsis_systick.c
@ -559,18 +610,23 @@ list(APPEND GRAPHICS_SOURCE_FILES
        drivers/Spi.cpp
        logging/NrfLogger.cpp

+        components/rle/RleDecoder.cpp
+
        components/gfx/Gfx.cpp
        drivers/St7789.cpp
        components/brightness/BrightnessController.cpp

-        graphics.cpp
+        displayapp/icons/infinitime/infinitime-nb.c
+        recoveryLoader.cpp
        )

+
 set(INCLUDE_FILES
        BootloaderVersion.h
        logging/Logger.h
        logging/NrfLogger.h
        displayapp/DisplayApp.h
+        displayapp/Messages.h
        displayapp/TouchEvents.h
        displayapp/screens/Screen.h
        displayapp/screens/Clock.h
@ -820,8 +876,8 @@ add_custom_command(TARGET ${EXECUTABLE_NAME}
 # Build binary intended to be used by bootloader
 set(EXECUTABLE_MCUBOOT_NAME "pinetime-mcuboot-app")
 set(EXECUTABLE_MCUBOOT_FILE_NAME ${EXECUTABLE_MCUBOOT_NAME}-${pinetime_VERSION_MAJOR}.${pinetime_VERSION_MINOR}.${pinetime_VERSION_PATCH})
-set(IMAGE_MCUBOOT_FILE_NAME image-${pinetime_VERSION_MAJOR}.${pinetime_VERSION_MINOR}.${pinetime_VERSION_PATCH}.bin)
-set(DFU_FILE_NAME dfu-${pinetime_VERSION_MAJOR}.${pinetime_VERSION_MINOR}.${pinetime_VERSION_PATCH}.zip)
+set(IMAGE_MCUBOOT_FILE_NAME ${EXECUTABLE_MCUBOOT_NAME}-image-${pinetime_VERSION_MAJOR}.${pinetime_VERSION_MINOR}.${pinetime_VERSION_PATCH}.bin)
+set(DFU_MCUBOOT_FILE_NAME ${EXECUTABLE_MCUBOOT_NAME}-dfu-${pinetime_VERSION_MAJOR}.${pinetime_VERSION_MINOR}.${pinetime_VERSION_PATCH}.zip)
 set(NRF5_LINKER_SCRIPT_MCUBOOT "${CMAKE_SOURCE_DIR}/gcc_nrf52-mcuboot.ld")
 add_executable(${EXECUTABLE_MCUBOOT_NAME} ${SOURCE_FILES})
 target_link_libraries(${EXECUTABLE_MCUBOOT_NAME} nimble nrf-sdk lvgl)
@ -846,16 +902,26 @@ add_custom_command(TARGET ${EXECUTABLE_MCUBOOT_NAME}
        COMMAND ${CMAKE_SIZE_UTIL} ${EXECUTABLE_MCUBOOT_FILE_NAME}.out
        COMMAND ${CMAKE_OBJCOPY} -O binary ${EXECUTABLE_MCUBOOT_FILE_NAME}.out "${EXECUTABLE_MCUBOOT_FILE_NAME}.bin"
        COMMAND ${CMAKE_OBJCOPY} -O ihex ${EXECUTABLE_MCUBOOT_FILE_NAME}.out "${EXECUTABLE_MCUBOOT_FILE_NAME}.hex"
+        COMMAND ${CMAKE_SOURCE_DIR}/tools/mcuboot/imgtool.py create --align 4 --version 1.0.0 --header-size 32 --slot-size 475136 --pad-header ${EXECUTABLE_MCUBOOT_FILE_NAME}.bin ${IMAGE_MCUBOOT_FILE_NAME}
        COMMENT "post build steps for ${EXECUTABLE_MCUBOOT_FILE_NAME}"
        )

-# Build binary that writes the graphic assets for the bootloader
-set(EXECUTABLE_GRAPHICS_NAME "pinetime-graphics")
-set(EXECUTABLE_GRAPHICS_FILE_NAME ${EXECUTABLE_GRAPHICS_NAME}-${pinetime_VERSION_MAJOR}.${pinetime_VERSION_MINOR}.${pinetime_VERSION_PATCH})
-add_executable(${EXECUTABLE_GRAPHICS_NAME} ${GRAPHICS_SOURCE_FILES})
-target_link_libraries(${EXECUTABLE_GRAPHICS_NAME} nrf-sdk)
-set_target_properties(${EXECUTABLE_GRAPHICS_NAME} PROPERTIES OUTPUT_NAME ${EXECUTABLE_GRAPHICS_FILE_NAME})
-target_compile_options(${EXECUTABLE_GRAPHICS_NAME} PUBLIC
+if(BUILD_DFU)
+    add_custom_command(TARGET ${EXECUTABLE_MCUBOOT_NAME}
+            POST_BUILD
+            COMMAND adafruit-nrfutil dfu genpkg --dev-type 0x0052 --application ${IMAGE_MCUBOOT_FILE_NAME} ${DFU_MCUBOOT_FILE_NAME}
+            COMMENT "post build (DFU) steps for ${EXECUTABLE_MCUBOOT_FILE_NAME}"
+            )
+endif()
+
+# InfiniTime recovery firmware (autonomous)
+set(EXECUTABLE_RECOVERY_NAME "pinetime-recovery")
+set(EXECUTABLE_RECOVERY_FILE_NAME ${EXECUTABLE_RECOVERY_NAME}-${pinetime_VERSION_MAJOR}.${pinetime_VERSION_MINOR}.${pinetime_VERSION_PATCH})
+add_executable(${EXECUTABLE_RECOVERY_NAME} ${RECOVERY_SOURCE_FILES})
+target_link_libraries(${EXECUTABLE_RECOVERY_NAME} nimble nrf-sdk)
+set_target_properties(${EXECUTABLE_RECOVERY_NAME} PROPERTIES OUTPUT_NAME ${EXECUTABLE_RECOVERY_FILE_NAME})
+target_compile_definitions(${EXECUTABLE_RECOVERY_NAME} PUBLIC "PINETIME_IS_RECOVERY")
+target_compile_options(${EXECUTABLE_RECOVERY_NAME} PUBLIC
        $<$<AND:$<COMPILE_LANGUAGE:C>,$<CONFIG:DEBUG>>: ${COMMON_FLAGS} -O0 -g3>
        $<$<AND:$<COMPILE_LANGUAGE:C>,$<CONFIG:RELEASE>>: ${COMMON_FLAGS} -O3>
        $<$<AND:$<COMPILE_LANGUAGE:CXX>,$<CONFIG:DEBUG>>: ${COMMON_FLAGS} -O0 -g3>
@ -863,21 +929,142 @@ target_compile_options(${EXECUTABLE_GRAPHICS_NAME} PUBLIC
        $<$<COMPILE_LANGUAGE:ASM>: -MP -MD -x assembler-with-cpp>
        )

-set_target_properties(${EXECUTABLE_GRAPHICS_NAME} PROPERTIES
+set_target_properties(${EXECUTABLE_RECOVERY_NAME} PROPERTIES
        SUFFIX ".out"
-        LINK_FLAGS "-mthumb -mabi=aapcs -L ${NRF5_SDK_PATH}/modules/nrfx/mdk -T${NRF5_LINKER_SCRIPT} -mcpu=cortex-m4 -mfloat-abi=hard -mfpu=fpv4-sp-d16 -Wl,--gc-sections --specs=nano.specs -lc -lnosys -lm -Wl,-Map=${EXECUTABLE_GRAPHICS_FILE_NAME}.map"
+        LINK_FLAGS "-mthumb -mabi=aapcs -L ${NRF5_SDK_PATH}/modules/nrfx/mdk -T${NRF5_LINKER_SCRIPT} -mcpu=cortex-m4 -mfloat-abi=hard -mfpu=fpv4-sp-d16 -Wl,--gc-sections --specs=nano.specs -lc -lnosys -lm -Wl,-Map=${EXECUTABLE_RECOVERY_FILE_NAME}.map"
        CXX_STANDARD 11
        C_STANDARD 99
        )

-add_custom_command(TARGET ${EXECUTABLE_GRAPHICS_NAME}
+add_custom_command(TARGET ${EXECUTABLE_RECOVERY_NAME}
        POST_BUILD
-        COMMAND ${CMAKE_SIZE_UTIL} ${EXECUTABLE_GRAPHICS_FILE_NAME}.out
-        COMMAND ${CMAKE_OBJCOPY} -O binary ${EXECUTABLE_GRAPHICS_FILE_NAME}.out "${EXECUTABLE_GRAPHICS_FILE_NAME}.bin"
-        COMMAND ${CMAKE_OBJCOPY} -O ihex ${EXECUTABLE_GRAPHICS_FILE_NAME}.out "${EXECUTABLE_GRAPHICS_FILE_NAME}.hex"
-        COMMENT "post build steps for ${EXECUTABLE_GRAPHICS_FILE_NAME}"
+        COMMAND ${CMAKE_SIZE_UTIL} ${EXECUTABLE_RECOVERY_FILE_NAME}.out
+        COMMAND ${CMAKE_OBJCOPY} -O binary ${EXECUTABLE_RECOVERY_FILE_NAME}.out "${EXECUTABLE_RECOVERY_FILE_NAME}.bin"
+        COMMAND ${CMAKE_OBJCOPY} -O ihex ${EXECUTABLE_RECOVERY_FILE_NAME}.out "${EXECUTABLE_RECOVERY_FILE_NAME}.hex"
+        COMMENT "post build steps for ${EXECUTABLE_RECOVERY_FILE_NAME}"
        )

+# InfiniTime recovery firmware (mcuboot)
+set(EXECUTABLE_RECOVERY_MCUBOOT_NAME "pinetime-mcuboot-recovery")
+set(EXECUTABLE_RECOVERY_MCUBOOT_FILE_NAME ${EXECUTABLE_RECOVERY_MCUBOOT_NAME}-${pinetime_VERSION_MAJOR}.${pinetime_VERSION_MINOR}.${pinetime_VERSION_PATCH})
+set(IMAGE_RECOVERY_MCUBOOT_FILE_NAME ${EXECUTABLE_RECOVERY_MCUBOOT_NAME}-image-${pinetime_VERSION_MAJOR}.${pinetime_VERSION_MINOR}.${pinetime_VERSION_PATCH}.bin)
+set(DFU_RECOVERY_MCUBOOT_FILE_NAME ${EXECUTABLE_RECOVERY_MCUBOOT_NAME}-dfu-${pinetime_VERSION_MAJOR}.${pinetime_VERSION_MINOR}.${pinetime_VERSION_PATCH}.zip)
+add_executable(${EXECUTABLE_RECOVERY_MCUBOOT_NAME} ${RECOVERY_SOURCE_FILES})
+target_link_libraries(${EXECUTABLE_RECOVERY_MCUBOOT_NAME} nimble nrf-sdk)
+set_target_properties(${EXECUTABLE_RECOVERY_MCUBOOT_NAME} PROPERTIES OUTPUT_NAME ${EXECUTABLE_RECOVERY_MCUBOOT_FILE_NAME})
+target_compile_definitions(${EXECUTABLE_RECOVERY_MCUBOOT_NAME} PUBLIC "PINETIME_IS_RECOVERY")
+target_compile_options(${EXECUTABLE_RECOVERY_MCUBOOT_NAME} PUBLIC
+        $<$<AND:$<COMPILE_LANGUAGE:C>,$<CONFIG:DEBUG>>: ${COMMON_FLAGS} -O0 -g3>
+        $<$<AND:$<COMPILE_LANGUAGE:C>,$<CONFIG:RELEASE>>: ${COMMON_FLAGS} -O3>
+        $<$<AND:$<COMPILE_LANGUAGE:CXX>,$<CONFIG:DEBUG>>: ${COMMON_FLAGS} -O0 -g3>
+        $<$<AND:$<COMPILE_LANGUAGE:CXX>,$<CONFIG:RELEASE>>: ${COMMON_FLAGS} -O3>
+        $<$<COMPILE_LANGUAGE:ASM>: -MP -MD -x assembler-with-cpp>
+        )
+
+set_target_properties(${EXECUTABLE_RECOVERY_MCUBOOT_NAME} PROPERTIES
+        SUFFIX ".out"
+        LINK_FLAGS "-mthumb -mabi=aapcs -L ${NRF5_SDK_PATH}/modules/nrfx/mdk -T${NRF5_LINKER_SCRIPT_MCUBOOT} -mcpu=cortex-m4 -mfloat-abi=hard -mfpu=fpv4-sp-d16 -Wl,--gc-sections --specs=nano.specs -lc -lnosys -lm -Wl,-Map=${EXECUTABLE_RECOVERY_MCUBOOT_FILE_NAME}.map"
+        CXX_STANDARD 11
+        C_STANDARD 99
+        )
+
+add_custom_command(TARGET ${EXECUTABLE_RECOVERY_MCUBOOT_NAME}
+        POST_BUILD
+        COMMAND ${CMAKE_SIZE_UTIL} ${EXECUTABLE_RECOVERY_MCUBOOT_FILE_NAME}.out
+        COMMAND ${CMAKE_OBJCOPY} -O binary ${EXECUTABLE_RECOVERY_MCUBOOT_FILE_NAME}.out "${EXECUTABLE_RECOVERY_MCUBOOT_FILE_NAME}.bin"
+        COMMAND ${CMAKE_OBJCOPY} -O ihex ${EXECUTABLE_RECOVERY_MCUBOOT_FILE_NAME}.out "${EXECUTABLE_RECOVERYY_MCUBOOT_FILE_NAME}.hex"
+        COMMAND ${CMAKE_SOURCE_DIR}/tools/mcuboot/imgtool.py create --align 4 --version 1.0.0 --header-size 32 --slot-size 475136 --pad-header ${EXECUTABLE_RECOVERY_MCUBOOT_FILE_NAME}.bin ${IMAGE_RECOVERY_MCUBOOT_FILE_NAME}
+        COMMAND python ${CMAKE_SOURCE_DIR}/tools/bin2c.py ${IMAGE_RECOVERY_MCUBOOT_FILE_NAME} recoveryImage > recoveryImage.h
+        COMMENT "post build steps for ${EXECUTABLE_RECOVERY_MCUBOOT_FILE_NAME}"
+        )
+
+if(BUILD_DFU)
+    add_custom_command(TARGET ${EXECUTABLE_RECOVERY_MCUBOOT_NAME}
+            POST_BUILD
+            COMMAND adafruit-nrfutil dfu genpkg --dev-type 0x0052 --application ${IMAGE_RECOVERY_MCUBOOT_FILE_NAME} ${DFU_RECOVERY_MCUBOOT_FILE_NAME}
+            COMMENT "post build (DFU) steps for ${EXECUTABLE_RECOVERY_MCUBOOT_FILE_NAME}"
+            )
+endif()
+
+# Build binary that writes the recovery image into the SPI flash memory
+set(EXECUTABLE_RECOVERYLOADER_NAME "pinetime-recovery-loader")
+set(EXECUTABLE_RECOVERYLOADER_FILE_NAME ${EXECUTABLE_RECOVERYLOADER_NAME}-${pinetime_VERSION_MAJOR}.${pinetime_VERSION_MINOR}.${pinetime_VERSION_PATCH})
+add_executable(${EXECUTABLE_RECOVERYLOADER_NAME} ${RECOVERYLOADER_SOURCE_FILES})
+target_link_libraries(${EXECUTABLE_RECOVERYLOADER_NAME} nrf-sdk)
+set_target_properties(${EXECUTABLE_RECOVERYLOADER_NAME} PROPERTIES OUTPUT_NAME ${EXECUTABLE_RECOVERYLOADER_FILE_NAME})
+target_compile_options(${EXECUTABLE_RECOVERYLOADER_NAME} PUBLIC
+        $<$<AND:$<COMPILE_LANGUAGE:C>,$<CONFIG:DEBUG>>: ${COMMON_FLAGS} -O0 -g3>
+        $<$<AND:$<COMPILE_LANGUAGE:C>,$<CONFIG:RELEASE>>: ${COMMON_FLAGS} -O3>
+        $<$<AND:$<COMPILE_LANGUAGE:CXX>,$<CONFIG:DEBUG>>: ${COMMON_FLAGS} -O0 -g3>
+        $<$<AND:$<COMPILE_LANGUAGE:CXX>,$<CONFIG:RELEASE>>: ${COMMON_FLAGS} -O3>
+        $<$<COMPILE_LANGUAGE:ASM>: -MP -MD -x assembler-with-cpp>
+        )
+target_include_directories(${EXECUTABLE_RECOVERYLOADER_NAME} PUBLIC
+        $<BUILD_INTERFACE:${CMAKE_BINARY_DIR}/src>
+        )
+add_dependencies(${EXECUTABLE_RECOVERYLOADER_NAME} ${EXECUTABLE_RECOVERY_MCUBOOT_NAME})
+
+set_target_properties(${EXECUTABLE_RECOVERYLOADER_NAME} PROPERTIES
+        SUFFIX ".out"
+        LINK_FLAGS "-mthumb -mabi=aapcs -L ${NRF5_SDK_PATH}/modules/nrfx/mdk -T${NRF5_LINKER_SCRIPT} -mcpu=cortex-m4 -mfloat-abi=hard -mfpu=fpv4-sp-d16 -Wl,--gc-sections --specs=nano.specs -lc -lnosys -lm -Wl,-Map=${EXECUTABLE_RECOVERYLOADER_FILE_NAME}.map"
+        CXX_STANDARD 11
+        C_STANDARD 99
+        )
+
+add_custom_command(TARGET ${EXECUTABLE_RECOVERYLOADER_NAME}
+        POST_BUILD
+        COMMAND ${CMAKE_SIZE_UTIL} ${EXECUTABLE_RECOVERYLOADER_FILE_NAME}.out
+        COMMAND ${CMAKE_OBJCOPY} -O binary ${EXECUTABLE_RECOVERYLOADER_FILE_NAME}.out "${EXECUTABLE_RECOVERYLOADER_FILE_NAME}.bin"
+        COMMAND ${CMAKE_OBJCOPY} -O ihex ${EXECUTABLE_RECOVERYLOADER_FILE_NAME}.out "${EXECUTABLE_RECOVERYLOADER_FILE_NAME}.hex"
+        COMMENT "post build steps for ${EXECUTABLE_RECOVERYLOADER_FILE_NAME}"
+        )
+
+# Build binary that writes the recovery image (MCUBoot version)
+set(EXECUTABLE_MCUBOOT_RECOVERYLOADER_NAME "pinetime-mcuboot-recovery-loader")
+set(EXECUTABLE_MCUBOOT_RECOVERYLOADER_FILE_NAME ${EXECUTABLE_MCUBOOT_RECOVERYLOADER_NAME}-${pinetime_VERSION_MAJOR}.${pinetime_VERSION_MINOR}.${pinetime_VERSION_PATCH})
+set(IMAGE_MCUBOOT_RECOVERYLOADER_FILE_NAME ${EXECUTABLE_MCUBOOT_RECOVERYLOADER_NAME}-image-${pinetime_VERSION_MAJOR}.${pinetime_VERSION_MINOR}.${pinetime_VERSION_PATCH}.bin)
+set(DFU_MCUBOOT_RECOVERYLOADER_FILE_NAME ${EXECUTABLE_MCUBOOT_RECOVERYLOADER_NAME}-dfu-${pinetime_VERSION_MAJOR}.${pinetime_VERSION_MINOR}.${pinetime_VERSION_PATCH}.zip)
+add_executable(${EXECUTABLE_MCUBOOT_RECOVERYLOADER_NAME} ${RECOVERYLOADER_SOURCE_FILES})
+target_link_libraries(${EXECUTABLE_MCUBOOT_RECOVERYLOADER_NAME} nrf-sdk)
+set_target_properties(${EXECUTABLE_MCUBOOT_RECOVERYLOADER_NAME} PROPERTIES OUTPUT_NAME ${EXECUTABLE_MCUBOOT_RECOVERYLOADER_FILE_NAME})
+target_compile_options(${EXECUTABLE_MCUBOOT_RECOVERYLOADER_NAME} PUBLIC
+        $<$<AND:$<COMPILE_LANGUAGE:C>,$<CONFIG:DEBUG>>: ${COMMON_FLAGS} -O0 -g3>
+        $<$<AND:$<COMPILE_LANGUAGE:C>,$<CONFIG:RELEASE>>: ${COMMON_FLAGS} -O3>
+        $<$<AND:$<COMPILE_LANGUAGE:CXX>,$<CONFIG:DEBUG>>: ${COMMON_FLAGS} -O0 -g3>
+        $<$<AND:$<COMPILE_LANGUAGE:CXX>,$<CONFIG:RELEASE>>: ${COMMON_FLAGS} -O3>
+        $<$<COMPILE_LANGUAGE:ASM>: -MP -MD -x assembler-with-cpp>
+        )
+target_include_directories(${EXECUTABLE_MCUBOOT_RECOVERYLOADER_NAME} PUBLIC
+        $<BUILD_INTERFACE:${CMAKE_BINARY_DIR}/src>
+        )
+add_dependencies(${EXECUTABLE_MCUBOOT_RECOVERYLOADER_NAME} ${EXECUTABLE_RECOVERY_MCUBOOT_NAME})
+
+set_target_properties(${EXECUTABLE_MCUBOOT_RECOVERYLOADER_NAME} PROPERTIES
+        SUFFIX ".out"
+        LINK_FLAGS "-mthumb -mabi=aapcs -std=gnu++98 -std=c99 -L ${NRF5_SDK_PATH}/modules/nrfx/mdk -T${NRF5_LINKER_SCRIPT_MCUBOOT} -mcpu=cortex-m4 -mfloat-abi=hard -mfpu=fpv4-sp-d16 -Wl,--gc-sections --specs=nano.specs -lc -lnosys -lm -Wl,-Map=${EXECUTABLE_MCUBOOT_RECOVERYLOADER_FILE_NAME}.map"
+        CXX_STANDARD 11
+        C_STANDARD 99
+        )
+
+add_custom_command(TARGET ${EXECUTABLE_MCUBOOT_RECOVERYLOADER_NAME}
+        POST_BUILD
+        COMMAND ${CMAKE_SIZE_UTIL} ${EXECUTABLE_MCUBOOT_RECOVERYLOADER_FILE_NAME}.out
+        COMMAND ${CMAKE_OBJCOPY} -O binary ${EXECUTABLE_MCUBOOT_RECOVERYLOADER_FILE_NAME}.out "${EXECUTABLE_MCUBOOT_RECOVERYLOADER_FILE_NAME}.bin"
+        COMMAND ${CMAKE_OBJCOPY} -O ihex ${EXECUTABLE_MCUBOOT_RECOVERYLOADER_FILE_NAME}.out "${EXECUTABLE_MCUBOOT_RECOVERYLOADER_FILE_NAME}.hex"
+        COMMAND ${CMAKE_SOURCE_DIR}/tools/mcuboot/imgtool.py create --align 4 --version 1.0.0 --header-size 32 --slot-size 475136 --pad-header ${EXECUTABLE_MCUBOOT_RECOVERYLOADER_FILE_NAME}.bin ${IMAGE_MCUBOOT_RECOVERYLOADER_FILE_NAME}
+        COMMAND python ${CMAKE_SOURCE_DIR}/tools/bin2c.py ${IMAGE_MCUBOOT_RECOVERYLOADER_FILE_NAME} recoveryLoaderImage > recoveryLoaderImage.h
+        COMMENT "post build steps for ${EXECUTABLE_MCUBOOT_RECOVERYLOADER_FILE_NAME}"
+        )
+
+if(BUILD_DFU)
+    add_custom_command(TARGET ${EXECUTABLE_MCUBOOT_RECOVERYLOADER_NAME}
+            POST_BUILD
+            COMMAND adafruit-nrfutil dfu genpkg --dev-type 0x0052 --application ${IMAGE_MCUBOOT_RECOVERYLOADER_FILE_NAME} ${DFU_MCUBOOT_RECOVERYLOADER_FILE_NAME}
+            COMMENT "post build (DFU) steps for ${EXECUTABLE_MCUBOOT_RECOVERYLOADER_FILE_NAME}"
+            )
+endif()
+
+
 # FLASH
 if (USE_JLINK)
    add_custom_target(FLASH_ERASE
--- a/src/components/rle/RleDecoder.cpp
+++ b/src/components/rle/RleDecoder.cpp
@ -0,0 +1,39 @@
+#include "RleDecoder.h"
+
+using namespace Pinetime::Tools;
+
+RleDecoder::RleDecoder(const uint8_t *buffer, size_t size) : buffer{buffer}, size{size} {
+
+}
+
+RleDecoder::RleDecoder(const uint8_t *buffer, size_t size, uint16_t foregroundColor, uint16_t backgroundColor) : RleDecoder{buffer, size} {
+  this->foregroundColor = foregroundColor;
+  this->backgroundColor = backgroundColor;
+}
+
+
+void RleDecoder::DecodeNext(uint8_t *output, size_t maxBytes) {
+  for (;encodedBufferIndex<size; encodedBufferIndex++) {
+    uint8_t rl = buffer[encodedBufferIndex] - processedCount;
+    while (rl) {
+      output[bp] = color >> 8;
+      output[bp + 1] = color & 0xff;
+      bp += 2;
+      rl -= 1;
+      processedCount++;
+
+      if (bp >= maxBytes) {
+        bp = 0;
+        y += 1;
+        return;
+      }
+    }
+    processedCount = 0;
+
+    if (color == backgroundColor)
+      color = foregroundColor;
+    else
+      color = backgroundColor;
+  }
+}
+
--- a/src/components/rle/RleDecoder.h
+++ b/src/components/rle/RleDecoder.h
@ -0,0 +1,33 @@
+#pragma once
+
+#include <cstdint>
+#include <cstddef>
+
+namespace Pinetime {
+  namespace Tools {
+    /* 1-bit RLE decoder. Provide the encoded buffer to the constructor and then call DecodeNext() by
+     * specifying the output (decoded) buffer and the maximum number of bytes this buffer can handle.
+     *
+     * Code from https://github.com/daniel-thompson/wasp-bootloader by Daniel Thompson released under the MIT license.
+     */
+    class RleDecoder {
+    public:
+      RleDecoder(const uint8_t* buffer, size_t size);
+      RleDecoder(const uint8_t* buffer, size_t size, uint16_t foregroundColor, uint16_t backgroundColor);
+
+      void DecodeNext(uint8_t* output, size_t maxBytes);
+
+    private:
+      const uint8_t* buffer;
+      size_t size;
+
+      int encodedBufferIndex = 0;
+      int y = 0;
+      uint16_t bp = 0;
+      uint16_t foregroundColor = 0xffff;
+      uint16_t backgroundColor = 0;
+      uint16_t color = backgroundColor;
+      int processedCount = 0;
+    };
+  }
+}
--- a/src/displayapp/DisplayApp.cpp
+++ b/src/displayapp/DisplayApp.cpp
@ -25,6 +25,7 @@
 #include "systemtask/SystemTask.h"

 using namespace Pinetime::Applications;
+using namespace Pinetime::Applications::Display;

 DisplayApp::DisplayApp(Drivers::St7789 &lcd, Components::LittleVgl &lvgl, Drivers::Cst816S &touchPanel,
                       Controllers::Battery &batteryController, Controllers::Ble &bleController,
@ -220,7 +221,7 @@ void DisplayApp::IdleState() {

 }

-void DisplayApp::PushMessage(DisplayApp::Messages msg) {
+void DisplayApp::PushMessage(Messages msg) {
  BaseType_t xHigherPriorityTaskWoken;
  xHigherPriorityTaskWoken = pdFALSE;
  xQueueSendFromISR(msgQueue, &msg, &xHigherPriorityTaskWoken);
--- a/src/displayapp/DisplayApp.h
+++ b/src/displayapp/DisplayApp.h
@ -10,6 +10,7 @@
 #include "components/brightness/BrightnessController.h"
 #include "components/firmwarevalidator/FirmwareValidator.h"
 #include "displayapp/screens/Screen.h"
+#include "Messages.h"

 namespace Pinetime {

@ -33,9 +34,6 @@ namespace Pinetime {
    class DisplayApp {
      public:
        enum class States {Idle, Running};
-        enum class Messages : uint8_t {GoToSleep, GoToRunning, UpdateDateTime, UpdateBleConnection, UpdateBatteryLevel, TouchEvent, ButtonPushed,
-            NewNotification, BleFirmwareUpdateStarted };
-
        enum class FullRefreshDirections { None, Up, Down };
        enum class TouchModes { Gestures, Polling };

@ -46,7 +44,7 @@ namespace Pinetime {
                   Pinetime::Controllers::NotificationManager& notificationManager,
                   Pinetime::Controllers::HeartRateController& heartRateController);
        void Start();
-        void PushMessage(Messages msg);
+        void PushMessage(Display::Messages msg);

        void StartApp(Apps app);

--- a/src/displayapp/DisplayAppRecovery.cpp
+++ b/src/displayapp/DisplayAppRecovery.cpp
@ -0,0 +1,110 @@
+#include "DisplayAppRecovery.h"
+#include "DisplayAppRecovery.h"
+#include <FreeRTOS.h>
+#include <task.h>
+#include <libraries/log/nrf_log.h>
+#include <components/rle/RleDecoder.h>
+#include "displayapp/icons/infinitime/infinitime-nb.c"
+
+using namespace Pinetime::Applications;
+
+DisplayApp::DisplayApp(Drivers::St7789 &lcd, Components::LittleVgl &lvgl, Drivers::Cst816S &touchPanel,
+                       Controllers::Battery &batteryController, Controllers::Ble &bleController,
+                       Controllers::DateTime &dateTimeController, Drivers::WatchdogView &watchdog,
+                       System::SystemTask &systemTask,
+                       Pinetime::Controllers::NotificationManager& notificationManager,
+                       Pinetime::Controllers::HeartRateController& heartRateController):
+    lcd{lcd}, bleController{bleController} {
+  msgQueue = xQueueCreate(queueSize, itemSize);
+
+}
+
+void DisplayApp::Start() {
+  if (pdPASS != xTaskCreate(DisplayApp::Process, "displayapp", 512, this, 0, &taskHandle))
+    APP_ERROR_HANDLER(NRF_ERROR_NO_MEM);
+}
+
+void DisplayApp::Process(void *instance) {
+  auto *app = static_cast<DisplayApp *>(instance);
+  NRF_LOG_INFO("displayapp task started!");
+
+  // Send a dummy notification to unlock the lvgl display driver for the first iteration
+  xTaskNotifyGive(xTaskGetCurrentTaskHandle());
+
+  app->InitHw();
+  while (1) {
+    app->Refresh();
+  }
+}
+
+void DisplayApp::InitHw() {
+  DisplayLogo(colorWhite);
+}
+
+void DisplayApp::Refresh() {
+  Display::Messages msg;
+  if (xQueueReceive(msgQueue, &msg, 200)) {
+    switch (msg) {
+      case Display::Messages::UpdateBleConnection:
+        if (bleController.IsConnected())
+          DisplayLogo(colorBlue);
+        else
+          DisplayLogo(colorWhite);
+        break;
+      case Display::Messages::BleFirmwareUpdateStarted:
+        DisplayLogo(colorGreen);
+        break;
+      default:
+        break;
+    }
+  }
+
+  if (bleController.IsFirmwareUpdating()) {
+    uint8_t percent = (static_cast<float>(bleController.FirmwareUpdateCurrentBytes()) /
+                       static_cast<float>(bleController.FirmwareUpdateTotalBytes())) * 100.0f;
+    switch (bleController.State()) {
+      case Controllers::Ble::FirmwareUpdateStates::Running:
+        DisplayOtaProgress(percent, colorWhite);
+        break;
+      case Controllers::Ble::FirmwareUpdateStates::Validated:
+        DisplayOtaProgress(100, colorGreenSwapped);
+        break;
+      case Controllers::Ble::FirmwareUpdateStates::Error:
+        DisplayOtaProgress(100, colorRedSwapped);
+        break;
+      default:
+        break;
+    }
+  }
+}
+
+void DisplayApp::DisplayLogo(uint16_t color) {
+  Pinetime::Tools::RleDecoder rleDecoder(infinitime_nb, sizeof(infinitime_nb), color, colorBlack);
+  for(int i = 0; i < displayWidth; i++) {
+    rleDecoder.DecodeNext(displayBuffer, displayWidth * bytesPerPixel);
+    ulTaskNotifyTake(pdTRUE, 500);
+    lcd.BeginDrawBuffer(0, i, displayWidth, 1);
+    lcd.NextDrawBuffer(reinterpret_cast<const uint8_t *>(displayBuffer), displayWidth * bytesPerPixel);
+  }
+}
+
+void DisplayApp::DisplayOtaProgress(uint8_t percent, uint16_t color) {
+  const uint8_t barHeight = 20;
+  std::fill(displayBuffer, displayBuffer+(displayWidth * bytesPerPixel), color);
+  for(int i = 0; i < barHeight; i++) {
+    ulTaskNotifyTake(pdTRUE, 500);
+    uint16_t barWidth = std::min(static_cast<float>(percent) * 2.4f, static_cast<float>(displayWidth));
+    lcd.BeginDrawBuffer(0, displayWidth - barHeight + i, barWidth, 1);
+    lcd.NextDrawBuffer(reinterpret_cast<const uint8_t *>(displayBuffer), barWidth * bytesPerPixel);
+  }
+}
+
+void DisplayApp::PushMessage(Display::Messages msg) {
+  BaseType_t xHigherPriorityTaskWoken;
+  xHigherPriorityTaskWoken = pdFALSE;
+  xQueueSendFromISR(msgQueue, &msg, &xHigherPriorityTaskWoken);
+  if (xHigherPriorityTaskWoken) {
+    /* Actual macro used here is port specific. */
+    // TODO : should I do something here?
+  }
+}
--- a/src/displayapp/DisplayAppRecovery.h
+++ b/src/displayapp/DisplayAppRecovery.h
@ -0,0 +1,71 @@
+#pragma once
+#include <FreeRTOS.h>
+#include <task.h>
+#include <drivers/St7789.h>
+#include <drivers/SpiMaster.h>
+#include <bits/unique_ptr.h>
+#include <queue.h>
+#include "components/gfx/Gfx.h"
+#include "components/battery/BatteryController.h"
+#include "components/brightness/BrightnessController.h"
+#include "components/ble/BleController.h"
+#include "components/datetime/DateTimeController.h"
+#include "components/ble/NotificationManager.h"
+#include "components/firmwarevalidator/FirmwareValidator.h"
+#include "drivers/Cst816s.h"
+#include <date/date.h>
+#include "displayapp/screens/Clock.h"
+#include <drivers/Watchdog.h>
+#include "TouchEvents.h"
+#include "Apps.h"
+#include "Messages.h"
+#include "DummyLittleVgl.h"
+
+namespace Pinetime {
+  namespace System {
+    class SystemTask;
+  };
+  namespace Applications {
+    class DisplayApp {
+    public:
+      DisplayApp(Drivers::St7789 &lcd, Components::LittleVgl &lvgl, Drivers::Cst816S &,
+                 Controllers::Battery &batteryController, Controllers::Ble &bleController,
+                 Controllers::DateTime &dateTimeController, Drivers::WatchdogView &watchdog,
+                 System::SystemTask &systemTask,
+                 Pinetime::Controllers::NotificationManager& notificationManager,
+                 Pinetime::Controllers::HeartRateController& heartRateController);
+      void Start();
+      void PushMessage(Pinetime::Applications::Display::Messages msg);
+
+    private:
+      TaskHandle_t taskHandle;
+      static void Process(void* instance);
+      void DisplayLogo(uint16_t color);
+      void DisplayOtaProgress(uint8_t percent, uint16_t color);
+      void InitHw();
+      void Refresh();
+      Pinetime::Drivers::St7789& lcd;
+      Controllers::Ble &bleController;
+
+      static constexpr uint8_t queueSize = 10;
+      static constexpr uint8_t itemSize = 1;
+      QueueHandle_t msgQueue;
+      static constexpr uint8_t displayWidth = 240;
+      static constexpr uint8_t displayHeight = 240;
+      static constexpr uint8_t bytesPerPixel = 2;
+
+      static constexpr uint16_t colorWhite = 0xFFFF;
+      static constexpr uint16_t colorGreen = 0x07E0;
+      static constexpr uint16_t colorGreenSwapped = 0xE007;
+      static constexpr uint16_t colorBlue = 0x0000ff;
+      static constexpr uint16_t colorRed = 0xff00;
+      static constexpr uint16_t colorRedSwapped = 0x00ff;
+      static constexpr uint16_t colorBlack = 0x0000;
+      uint8_t displayBuffer[displayWidth * bytesPerPixel];
+
+
+    };
+  }
+}
+
+
--- a/src/displayapp/DummyLittleVgl.h
+++ b/src/displayapp/DummyLittleVgl.h
@ -0,0 +1,30 @@
+#pragma once
+
+#include <libs/lvgl/src/lv_core/lv_style.h>
+#include <libs/lvgl/src/lv_themes/lv_theme.h>
+#include <libs/lvgl/src/lv_hal/lv_hal.h>
+#include <drivers/St7789.h>
+#include <drivers/Cst816s.h>
+
+namespace Pinetime {
+  namespace Components {
+    class LittleVgl {
+      public:
+        enum class FullRefreshDirections { None, Up, Down };
+        LittleVgl(Pinetime::Drivers::St7789& lcd, Pinetime::Drivers::Cst816S& touchPanel) {}
+
+        LittleVgl(const LittleVgl&) = delete;
+        LittleVgl& operator=(const LittleVgl&) = delete;
+        LittleVgl(LittleVgl&&) = delete;
+        LittleVgl& operator=(LittleVgl&&) = delete;
+
+        void FlushDisplay(const lv_area_t * area, lv_color_t * color_p) {}
+        bool GetTouchPadInfo(lv_indev_data_t *ptr) {return false;}
+        void SetFullRefresh(FullRefreshDirections direction) {}
+        void SetNewTapEvent(uint16_t x, uint16_t y) {}
+
+
+    };
+  }
+}
+
--- a/src/displayapp/Messages.h
+++ b/src/displayapp/Messages.h
@ -0,0 +1,11 @@
+#pragma once
+namespace Pinetime {
+  namespace Applications {
+    namespace Display {
+      enum class Messages : uint8_t {
+        GoToSleep, GoToRunning, UpdateDateTime, UpdateBleConnection, UpdateBatteryLevel, TouchEvent, ButtonPushed,
+        NewNotification, BleFirmwareUpdateStarted
+      };
+    }
+  }
+}
--- a/src/displayapp/icons/infinitime/infinitime-nb.c
+++ b/src/displayapp/icons/infinitime/infinitime-nb.c
@ -0,0 +1,127 @@
+
+#include <unistd.h>
+
+// 1-bit RLE, generated from ./infinitime-nb.png, 1445 bytes
+static const uint8_t infinitime_nb[] = {
+    0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0,
+    0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0,
+    0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0x66, 0x2, 0xed, 0x4, 0xec, 0x5,
+    0xea, 0x7, 0xe8, 0x9, 0xe6, 0xa, 0xe5, 0xc, 0xe3, 0xe, 0xe1, 0x10,
+    0xdf, 0x12, 0xde, 0x12, 0xdd, 0x14, 0xdb, 0x16, 0xd9, 0x18, 0xd7, 0x1a,
+    0xd5, 0x1b, 0xd4, 0x1d, 0xd3, 0xd, 0x3, 0xe, 0xd1, 0xd, 0x5, 0xe,
+    0xcf, 0xe, 0x5, 0xf, 0xcd, 0xf, 0x5, 0xf, 0xcc, 0x10, 0x5, 0x10,
+    0xca, 0x11, 0x5, 0x11, 0xc8, 0x12, 0x5, 0x12, 0xc6, 0x13, 0x5, 0x13,
+    0xc5, 0x13, 0x5, 0x13, 0xc4, 0x14, 0x5, 0x14, 0xc2, 0x15, 0x5, 0x15,
+    0xc0, 0x17, 0x3, 0x17, 0xbe, 0x33, 0xbc, 0x34, 0xbb, 0x36, 0xba, 0x37,
+    0xb8, 0x39, 0xb6, 0x3b, 0xb4, 0x3c, 0xb3, 0x3e, 0xb1, 0x40, 0xaf, 0x9,
+    0x2, 0x2e, 0x1, 0x8, 0xad, 0x9, 0x4, 0x2c, 0x3, 0x8, 0xac, 0x8,
+    0x6, 0x2a, 0x5, 0x7, 0xab, 0x9, 0x6, 0x29, 0x6, 0x8, 0xa9, 0xb,
+    0x5, 0x29, 0x5, 0xa, 0xa7, 0xd, 0x3, 0x2b, 0x3, 0xc, 0xa5, 0x4c,
+    0xa3, 0x4d, 0xa2, 0x4f, 0xa0, 0x51, 0x9f, 0x52, 0x9d, 0x54, 0x9b, 0x55,
+    0x9a, 0x57, 0x98, 0x59, 0x96, 0x5b, 0x94, 0x5d, 0x93, 0x5d, 0x92, 0x5f,
+    0x90, 0x61, 0x8e, 0x63, 0x8c, 0x65, 0x8a, 0x66, 0x89, 0x68, 0x87, 0x8,
+    0x2, 0x59, 0x2, 0x5, 0x86, 0x7, 0x4, 0x57, 0x4, 0x5, 0x84, 0x8,
+    0x5, 0x55, 0x6, 0x5, 0x82, 0x9, 0x6, 0x54, 0x6, 0x5, 0x81, 0xa,
+    0x5, 0x55, 0x5, 0x7, 0x7f, 0xc, 0x4, 0x56, 0x3, 0x9, 0x7d, 0x74,
+    0x7b, 0x76, 0x79, 0x77, 0x79, 0x78, 0x77, 0x7a, 0x75, 0x7c, 0x73, 0x7e,
+    0x71, 0x7f, 0x70, 0x81, 0x6e, 0x83, 0x6c, 0x85, 0x6b, 0x86, 0x69, 0x87,
+    0x68, 0x89, 0x66, 0x8b, 0x64, 0x8d, 0x62, 0x8f, 0x60, 0x90, 0x60, 0x91,
+    0x5e, 0x93, 0x5c, 0x95, 0x5a, 0xe, 0x7, 0x71, 0x7, 0xa, 0x58, 0xd,
+    0xb, 0x6d, 0xb, 0x8, 0x57, 0xe, 0xc, 0x6c, 0xc, 0x8, 0x55, 0xf,
+    0xc, 0x6c, 0xb, 0xa, 0x53, 0x11, 0xa, 0x6d, 0xb, 0xb, 0x52, 0x9f,
+    0x50, 0xa0, 0x4f, 0xa2, 0x4d, 0xa4, 0x4b, 0xa6, 0x49, 0xa8, 0x48, 0xa8,
+    0xff, 0x0, 0xe3, 0x44, 0xad, 0x43, 0xae, 0x41, 0xb0, 0x40, 0xb1, 0x3e,
+    0xb2, 0x3e, 0xb3, 0x3c, 0xb5, 0x3a, 0xb7, 0x39, 0xb8, 0x37, 0xb9, 0x36,
+    0xbb, 0x35, 0xe, 0x1, 0x66, 0x1, 0x3c, 0x1, 0x9, 0x33, 0xe, 0x3,
+    0x15, 0x5, 0xe, 0x4, 0x16, 0x15, 0xd, 0x3, 0x11, 0x5, 0xe, 0x4,
+    0x12, 0x3, 0x9, 0x31, 0xf, 0x4, 0x14, 0x6, 0xd, 0x4, 0x16, 0x15,
+    0xd, 0x4, 0x10, 0x5, 0xe, 0x4, 0x12, 0x4, 0x9, 0x30, 0xf, 0x4,
+    0x14, 0x6, 0xd, 0x4, 0x16, 0x15, 0xd, 0x4, 0x10, 0x6, 0xd, 0x4,
+    0x12, 0x4, 0x9, 0x2f, 0x10, 0x4, 0x14, 0x7, 0xc, 0x4, 0x16, 0x15,
+    0xd, 0x4, 0x10, 0x6, 0xd, 0x4, 0x12, 0x4, 0xa, 0x2d, 0x11, 0x4,
+    0x14, 0x7, 0xc, 0x4, 0x16, 0x4, 0x1e, 0x4, 0x10, 0x7, 0xc, 0x4,
+    0x12, 0x4, 0xb, 0x2c, 0x11, 0x4, 0x14, 0x8, 0xb, 0x4, 0x16, 0x4,
+    0x1e, 0x4, 0x10, 0x7, 0xc, 0x4, 0x12, 0x4, 0xc, 0x2a, 0x12, 0x4,
+    0x14, 0x8, 0xb, 0x4, 0x16, 0x4, 0x1e, 0x4, 0x10, 0x8, 0xb, 0x4,
+    0x12, 0x4, 0xd, 0x28, 0x13, 0x4, 0x14, 0x4, 0x1, 0x4, 0xa, 0x4,
+    0x16, 0x4, 0x1e, 0x4, 0x10, 0x4, 0x1, 0x3, 0xb, 0x4, 0x12, 0x4,
+    0xd, 0x28, 0x13, 0x4, 0x14, 0x4, 0x1, 0x4, 0xa, 0x4, 0x16, 0x4,
+    0x1e, 0x4, 0x10, 0x4, 0x1, 0x4, 0xa, 0x4, 0x12, 0x4, 0xe, 0x26,
+    0x14, 0x4, 0x14, 0x4, 0x2, 0x4, 0x9, 0x4, 0x16, 0x4, 0x1e, 0x4,
+    0x10, 0x4, 0x2, 0x3, 0xa, 0x4, 0x12, 0x4, 0xf, 0x24, 0x15, 0x4,
+    0x14, 0x4, 0x2, 0x4, 0x9, 0x4, 0x16, 0x4, 0x1e, 0x4, 0x10, 0x4,
+    0x2, 0x4, 0x9, 0x4, 0x12, 0x4, 0x10, 0x23, 0x15, 0x4, 0x14, 0x4,
+    0x3, 0x4, 0x8, 0x4, 0x16, 0x4, 0x1e, 0x4, 0x10, 0x4, 0x2, 0x4,
+    0x9, 0x4, 0x12, 0x4, 0x11, 0x21, 0x16, 0x4, 0x14, 0x4, 0x3, 0x4,
+    0x8, 0x4, 0x16, 0x4, 0x1e, 0x4, 0x10, 0x4, 0x3, 0x4, 0x8, 0x4,
+    0x12, 0x4, 0x11, 0x20, 0x17, 0x4, 0x14, 0x4, 0x4, 0x3, 0x8, 0x4,
+    0x16, 0x4, 0x1e, 0x4, 0x10, 0x4, 0x3, 0x4, 0x8, 0x4, 0x12, 0x4,
+    0x12, 0x1f, 0x17, 0x4, 0x14, 0x4, 0x4, 0x4, 0x7, 0x4, 0x16, 0x4,
+    0x1e, 0x4, 0x10, 0x4, 0x4, 0x3, 0x8, 0x4, 0x12, 0x4, 0x13, 0x1d,
+    0x18, 0x4, 0x14, 0x4, 0x5, 0x3, 0x7, 0x4, 0x16, 0x13, 0xf, 0x4,
+    0x10, 0x4, 0x4, 0x4, 0x7, 0x4, 0x12, 0x4, 0x14, 0x1b, 0x1a, 0x3,
+    0x14, 0x4, 0x5, 0x4, 0x6, 0x4, 0x16, 0x13, 0x10, 0x3, 0x10, 0x4,
+    0x5, 0x3, 0x7, 0x4, 0x13, 0x3, 0x15, 0x1a, 0x1b, 0x1, 0x15, 0x4,
+    0x6, 0x3, 0x6, 0x4, 0x16, 0x13, 0x11, 0x1, 0x11, 0x4, 0x5, 0x4,
+    0x6, 0x4, 0x14, 0x1, 0x16, 0x19, 0x32, 0x4, 0x6, 0x4, 0x5, 0x4,
+    0x16, 0x13, 0x23, 0x4, 0x6, 0x3, 0x6, 0x4, 0x2c, 0x17, 0x33, 0x4,
+    0x7, 0x3, 0x5, 0x4, 0x16, 0x4, 0x32, 0x4, 0x6, 0x4, 0x5, 0x4,
+    0x2d, 0x16, 0x1d, 0x1, 0x15, 0x4, 0x7, 0x4, 0x4, 0x4, 0x16, 0x4,
+    0x20, 0x1, 0x11, 0x4, 0x7, 0x3, 0x5, 0x4, 0x14, 0x1, 0x19, 0x14,
+    0x1d, 0x3, 0x14, 0x4, 0x7, 0x4, 0x4, 0x4, 0x16, 0x4, 0x1f, 0x3,
+    0x10, 0x4, 0x7, 0x4, 0x4, 0x4, 0x13, 0x3, 0x19, 0x12, 0x1d, 0x4,
+    0x14, 0x4, 0x8, 0x4, 0x3, 0x4, 0x16, 0x4, 0x1e, 0x4, 0x10, 0x4,
+    0x8, 0x3, 0x4, 0x4, 0x12, 0x4, 0x19, 0x12, 0x1d, 0x4, 0x14, 0x4,
+    0x8, 0x4, 0x3, 0x4, 0x16, 0x4, 0x1e, 0x4, 0x10, 0x4, 0x8, 0x4,
+    0x3, 0x4, 0x12, 0x4, 0x1a, 0x10, 0x1e, 0x4, 0x14, 0x4, 0x9, 0x3,
+    0x3, 0x4, 0x16, 0x4, 0x1e, 0x4, 0x10, 0x4, 0x8, 0x4, 0x3, 0x4,
+    0x12, 0x4, 0x1b, 0xe, 0x1f, 0x4, 0x14, 0x4, 0x9, 0x4, 0x2, 0x4,
+    0x16, 0x4, 0x1e, 0x4, 0x10, 0x4, 0x9, 0x4, 0x2, 0x4, 0x12, 0x4,
+    0x1c, 0xd, 0x1f, 0x4, 0x14, 0x4, 0xa, 0x3, 0x2, 0x4, 0x16, 0x4,
+    0x1e, 0x4, 0x10, 0x4, 0x9, 0x4, 0x2, 0x4, 0x12, 0x4, 0x1d, 0xb,
+    0x20, 0x4, 0x14, 0x4, 0xa, 0x4, 0x1, 0x4, 0x16, 0x4, 0x1e, 0x4,
+    0x10, 0x4, 0xa, 0x3, 0x2, 0x4, 0x12, 0x4, 0x1d, 0xb, 0x20, 0x4,
+    0x14, 0x4, 0xb, 0x3, 0x1, 0x4, 0x16, 0x4, 0x1e, 0x4, 0x10, 0x4,
+    0xa, 0x4, 0x1, 0x4, 0x12, 0x4, 0x1e, 0x9, 0x21, 0x4, 0x14, 0x4,
+    0xb, 0x8, 0x16, 0x4, 0x1e, 0x4, 0x10, 0x4, 0xb, 0x3, 0x1, 0x4,
+    0x12, 0x4, 0x1f, 0x7, 0x22, 0x4, 0x14, 0x4, 0xc, 0x7, 0x16, 0x4,
+    0x1e, 0x4, 0x10, 0x4, 0xb, 0x8, 0x12, 0x4, 0x20, 0x6, 0x22, 0x4,
+    0x14, 0x4, 0xc, 0x7, 0x16, 0x4, 0x1e, 0x4, 0x10, 0x4, 0xc, 0x7,
+    0x12, 0x4, 0x21, 0x4, 0x23, 0x4, 0x14, 0x4, 0xd, 0x6, 0x16, 0x4,
+    0x1e, 0x4, 0x10, 0x4, 0xc, 0x7, 0x12, 0x4, 0x21, 0x3, 0x24, 0x4,
+    0x14, 0x4, 0xd, 0x6, 0x16, 0x4, 0x1e, 0x4, 0x10, 0x4, 0xd, 0x6,
+    0x12, 0x4, 0x22, 0x2, 0x24, 0x4, 0x14, 0x4, 0xd, 0x6, 0x16, 0x4,
+    0x1e, 0x4, 0x10, 0x4, 0xd, 0x6, 0x12, 0x4, 0x48, 0x3, 0x15, 0x4,
+    0xe, 0x5, 0x16, 0x4, 0x1e, 0x3, 0x11, 0x4, 0xd, 0x6, 0x12, 0x3,
+    0x4a, 0x1, 0x66, 0x1, 0x3c, 0x1, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0,
+    0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0x10, 0x11,
+    0xf, 0x9, 0xf, 0x4, 0x9, 0x4, 0xd, 0xf, 0x8b, 0x11, 0xf, 0x9,
+    0xf, 0x5, 0x7, 0x5, 0xd, 0xf, 0x8b, 0x11, 0xf, 0x9, 0xf, 0x5,
+    0x7, 0x5, 0xd, 0xf, 0x92, 0x3, 0x19, 0x3, 0x12, 0x6, 0x5, 0x6,
+    0xd, 0x3, 0x9e, 0x3, 0x19, 0x3, 0x12, 0x6, 0x5, 0x6, 0xd, 0x3,
+    0x9e, 0x3, 0x19, 0x3, 0x12, 0x6, 0x5, 0x6, 0xd, 0x3, 0x9e, 0x3,
+    0x19, 0x3, 0x12, 0x3, 0x1, 0x3, 0x3, 0x3, 0x1, 0x3, 0xd, 0x3,
+    0x9e, 0x3, 0x19, 0x3, 0x12, 0x3, 0x2, 0x2, 0x3, 0x2, 0x2, 0x3,
+    0xd, 0x3, 0x9e, 0x3, 0x19, 0x3, 0x12, 0x3, 0x2, 0x3, 0x1, 0x3,
+    0x2, 0x3, 0xd, 0x3, 0x9e, 0x3, 0x19, 0x3, 0x12, 0x3, 0x2, 0x3,
+    0x1, 0x3, 0x2, 0x3, 0xd, 0x3, 0x9e, 0x3, 0x19, 0x3, 0x12, 0x3,
+    0x3, 0x5, 0x3, 0x3, 0xd, 0xd, 0x94, 0x3, 0x19, 0x3, 0x12, 0x3,
+    0x3, 0x5, 0x3, 0x3, 0xd, 0xd, 0x94, 0x3, 0x19, 0x3, 0x12, 0x3,
+    0x4, 0x3, 0x4, 0x3, 0xd, 0xd, 0x94, 0x3, 0x19, 0x3, 0x12, 0x3,
+    0x4, 0x3, 0x4, 0x3, 0xd, 0x3, 0x9e, 0x3, 0x19, 0x3, 0x12, 0x3,
+    0x5, 0x1, 0x5, 0x3, 0xd, 0x3, 0x9e, 0x3, 0x19, 0x3, 0x12, 0x3,
+    0x5, 0x1, 0x5, 0x3, 0xd, 0x3, 0x9e, 0x3, 0x19, 0x3, 0x12, 0x3,
+    0xb, 0x3, 0xd, 0x3, 0x9e, 0x3, 0x19, 0x3, 0x12, 0x3, 0xb, 0x3,
+    0xd, 0x3, 0x9e, 0x3, 0x19, 0x3, 0x12, 0x3, 0xb, 0x3, 0xd, 0x3,
+    0x9e, 0x3, 0x19, 0x3, 0x12, 0x3, 0xb, 0x3, 0xd, 0x3, 0x9e, 0x3,
+    0x19, 0x3, 0x12, 0x3, 0xb, 0x3, 0xd, 0x3, 0x9e, 0x3, 0x19, 0x3,
+    0x12, 0x3, 0xb, 0x3, 0xd, 0xf, 0x92, 0x3, 0x16, 0x9, 0xf, 0x3,
+    0xb, 0x3, 0xd, 0xf, 0x92, 0x3, 0x16, 0x9, 0xf, 0x3, 0xb, 0x3,
+    0xd, 0xf, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0,
+    0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0,
+    0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0,
+    0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0,
+    0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0,
+    0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0,
+    0xff, 0x0, 0xff, 0x0, 0xec,
+};
--- a/src/displayapp/icons/infinitime/infinitime-nb.png
+++ b/src/displayapp/icons/infinitime/infinitime-nb.png
--- a/src/libs/lvgl
+++ b/src/libs/lvgl
@ -1 +1 @@
-Subproject commit b89c30eafe1397a778ae5d65f108a0ef820de124
+Subproject commit 69a50b97dafffddd212e4b006776b473951be7a6
--- a/src/main.cpp
+++ b/src/main.cpp
@ -32,8 +32,6 @@
 #include "components/ble/NotificationManager.h"
 #include "components/motor/MotorController.h"
 #include "components/datetime/DateTimeController.h"
-#include "displayapp/DisplayApp.h"
-#include "displayapp/LittleVgl.h"
 #include "drivers/Spi.h"
 #include "drivers/SpiMaster.h"
 #include "drivers/SpiNorFlash.h"
@ -85,7 +83,18 @@ Pinetime::Drivers::TwiMaster twiMaster{Pinetime::Drivers::TwiMaster::Modules::TW
                                       Pinetime::Drivers::TwiMaster::Parameters {
                                               MaxTwiFrequencyWithoutHardwareBug, pinTwiSda, pinTwiScl}};
 Pinetime::Drivers::Cst816S touchPanel {twiMaster, touchPanelTwiAddress};
+#ifdef PINETIME_IS_RECOVERY
+static constexpr bool isFactory = true;
+#include "displayapp/DummyLittleVgl.h"
+#include "displayapp/DisplayAppRecovery.h"
 Pinetime::Components::LittleVgl lvgl {lcd, touchPanel};
+#else
+static constexpr bool isFactory = false;
+#include "displayapp/LittleVgl.h"
+#include "displayapp/DisplayApp.h"
+Pinetime::Components::LittleVgl lvgl {lcd, touchPanel};
+#endif
+

 Pinetime::Drivers::Hrs3300 heartRateSensor {twiMaster, heartRateSensorTwiAddress};

@ -114,7 +123,8 @@ void nrfx_gpiote_evt_handler(nrfx_gpiote_pin_t pin, nrf_gpiote_polarity_t action

 extern "C" {
  void vApplicationIdleHook(void) {
-    lv_tick_inc(1);
+    if(!isFactory)
+      lv_tick_inc(1);
  }
 }

--- a/src/recoveryLoader.cpp
+++ b/src/recoveryLoader.cpp
@ -4,7 +4,6 @@
 #include <drivers/Spi.h>
 #include <drivers/SpiNorFlash.h>
 #include <libraries/log/nrf_log.h>
-#include "bootloader/boot_graphics.h"
 #include <FreeRTOS.h>
 #include <task.h>
 #include <legacy/nrf_drv_gpiote.h>
@ -14,6 +13,12 @@
 #include <components/gfx/Gfx.h>
 #include <drivers/St7789.h>
 #include <components/brightness/BrightnessController.h>
+#include <algorithm>
+#include "recoveryImage.h"
+
+#include "displayapp/icons/infinitime/infinitime-nb.c"
+#include "components/rle/RleDecoder.h"
+

 #if NRF_LOG_ENABLED
 #include "logging/NrfLogger.h"
@ -30,14 +35,21 @@ static constexpr uint8_t pinSpiFlashCsn = 5;
 static constexpr uint8_t pinLcdCsn = 25;
 static constexpr uint8_t pinLcdDataCommand = 18;

+static constexpr uint8_t displayWidth = 240;
+static constexpr uint8_t displayHeight = 240;
+static constexpr uint8_t bytesPerPixel = 2;
+
+static constexpr uint16_t colorWhite = 0xFFFF;
+static constexpr uint16_t colorGreen = 0xE007;
+
 Pinetime::Drivers::SpiMaster spi{Pinetime::Drivers::SpiMaster::SpiModule::SPI0, {
-        Pinetime::Drivers::SpiMaster::BitOrder::Msb_Lsb,
-        Pinetime::Drivers::SpiMaster::Modes::Mode3,
-        Pinetime::Drivers::SpiMaster::Frequencies::Freq8Mhz,
-        pinSpiSck,
-        pinSpiMosi,
-        pinSpiMiso
-  }
+    Pinetime::Drivers::SpiMaster::BitOrder::Msb_Lsb,
+    Pinetime::Drivers::SpiMaster::Modes::Mode3,
+    Pinetime::Drivers::SpiMaster::Frequencies::Freq8Mhz,
+    pinSpiSck,
+    pinSpiMosi,
+    pinSpiMiso
+}
 };
 Pinetime::Drivers::Spi flashSpi{spi, pinSpiFlashCsn};
 Pinetime::Drivers::SpiNorFlash spiNorFlash{flashSpi};
@ -48,6 +60,10 @@ Pinetime::Drivers::St7789 lcd {lcdSpi, pinLcdDataCommand};
 Pinetime::Components::Gfx gfx{lcd};
 Pinetime::Controllers::BrightnessController brightnessController;

+void DisplayProgressBar(uint8_t percent, uint16_t color);
+
+void DisplayLogo();
+
 extern "C" {
 void vApplicationIdleHook(void) {

@ -70,10 +86,13 @@ void SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0_IRQHandler(void) {
 }
 }

-void Process(void* instance) {
-  // Wait before erasing the memory to let the time to the SWD debugger to flash a new firmware before running this one.
-  vTaskDelay(5000);
+void RefreshWatchdog() {
+  NRF_WDT->RR[0] = WDT_RR_RR_Reload;
+}

+uint8_t displayBuffer[displayWidth * bytesPerPixel];
+void Process(void* instance) {
+  RefreshWatchdog();
  APP_GPIOTE_INIT(2);

  NRF_LOG_INFO("Init...");
@ -83,45 +102,57 @@ void Process(void* instance) {
  brightnessController.Init();
  lcd.Init();
  gfx.Init();
-  NRF_LOG_INFO("Init Done!")
+
+  NRF_LOG_INFO("Display logo")
+  DisplayLogo();

  NRF_LOG_INFO("Erasing...");
-  for (uint32_t erased = 0; erased < graphicSize; erased += 0x1000) {
+  for (uint32_t erased = 0; erased < sizeof(recoveryImage); erased += 0x1000) {
    spiNorFlash.SectorErase(erased);
+    RefreshWatchdog();
  }
-  NRF_LOG_INFO("Erase done!");

-  NRF_LOG_INFO("Writing graphic...");
+  NRF_LOG_INFO("Writing factory image...");
  static constexpr uint32_t memoryChunkSize = 200;
  uint8_t writeBuffer[memoryChunkSize];
-  for(int offset = 0; offset < 115200; offset+=memoryChunkSize) {
-    std::memcpy(writeBuffer, &graphicBuffer[offset], memoryChunkSize);
+  for(size_t offset = 0; offset < sizeof(recoveryImage); offset+=memoryChunkSize) {
+    std::memcpy(writeBuffer, &recoveryImage[offset], memoryChunkSize);
    spiNorFlash.Write(offset, writeBuffer, memoryChunkSize);
+    DisplayProgressBar((static_cast<float>(offset) / static_cast<float>(sizeof(recoveryImage))) * 100.0f, colorWhite);
+    RefreshWatchdog();
  }
-  NRF_LOG_INFO("Writing graphic done!");
-
-  NRF_LOG_INFO("Read memory and display the graphic...");
-  static constexpr uint32_t screenWidth = 240;
-  static constexpr uint32_t screenWidthInBytes = screenWidth*2; // LCD display 16bits color (1 pixel = 2 bytes)
-  uint16_t displayLineBuffer[screenWidth];
-  for(uint32_t line = 0; line < screenWidth; line++) {
-    spiNorFlash.Read(line*screenWidthInBytes, reinterpret_cast<uint8_t *>(displayLineBuffer), screenWidth);
-    spiNorFlash.Read((line*screenWidthInBytes)+screenWidth, reinterpret_cast<uint8_t *>(displayLineBuffer) + screenWidth, screenWidth);
-    for(uint32_t col = 0; col < screenWidth; col++) {
-      gfx.pixel_draw(col, line, displayLineBuffer[col]);
-    }
-  }
-
-  NRF_LOG_INFO("Done!");
+  NRF_LOG_INFO("Writing factory image done!");
+  DisplayProgressBar(100.0f, colorGreen);

  while(1) {
    asm("nop" );
  }
 }

+void DisplayLogo() {
+  Pinetime::Tools::RleDecoder rleDecoder(infinitime_nb, sizeof(infinitime_nb));
+  for(int i = 0; i < displayWidth; i++) {
+    rleDecoder.DecodeNext(displayBuffer, displayWidth * bytesPerPixel);
+    ulTaskNotifyTake(pdTRUE, 500);
+    lcd.BeginDrawBuffer(0, i, displayWidth, 1);
+    lcd.NextDrawBuffer(reinterpret_cast<const uint8_t *>(displayBuffer), displayWidth * bytesPerPixel);
+  }
+}
+
+void DisplayProgressBar(uint8_t percent, uint16_t color) {
+  static constexpr uint8_t barHeight = 20;
+  std::fill(displayBuffer, displayBuffer+(displayWidth * bytesPerPixel), color);
+  for(int i = 0; i < barHeight; i++) {
+    ulTaskNotifyTake(pdTRUE, 500);
+    uint16_t barWidth = std::min(static_cast<float>(percent) * 2.4f, static_cast<float>(displayWidth));
+    lcd.BeginDrawBuffer(0, displayWidth - barHeight + i, barWidth, 1);
+    lcd.NextDrawBuffer(reinterpret_cast<const uint8_t *>(displayBuffer), barWidth * bytesPerPixel);
+  }
+}
+
 int main(void) {
  TaskHandle_t taskHandle;
-
+  RefreshWatchdog();
  logger.Init();
  nrf_drv_clock_init();

--- a/src/systemtask/SystemTask.cpp
+++ b/src/systemtask/SystemTask.cpp
@ -14,7 +14,6 @@

 #include "BootloaderVersion.h"
 #include "components/ble/BleController.h"
-#include "displayapp/LittleVgl.h"
 #include "drivers/Cst816s.h"
 #include "drivers/St7789.h"
 #include "drivers/InternalFlash.h"
@ -74,6 +73,7 @@ void SystemTask::Work() {
  spiNorFlash.Wakeup();
  nimbleController.Init();
  nimbleController.StartAdvertising();
+  brightnessController.Init();
  lcd.Init();

  twiMaster.Init();
@ -88,7 +88,7 @@ void SystemTask::Work() {
  displayApp->Start();

  batteryController.Update();
-  displayApp->PushMessage(Pinetime::Applications::DisplayApp::Messages::UpdateBatteryLevel);
+  displayApp->PushMessage(Pinetime::Applications::Display::Messages::UpdateBatteryLevel);

  heartRateSensor.Init();
  heartRateSensor.Disable();
@ -141,8 +141,8 @@ void SystemTask::Work() {
          touchPanel.Wakeup();
          lcd.Wakeup();

-          displayApp->PushMessage(Applications::DisplayApp::Messages::GoToRunning);
-          displayApp->PushMessage(Applications::DisplayApp::Messages::UpdateBatteryLevel);
+          displayApp->PushMessage(Pinetime::Applications::Display::Messages::GoToRunning);
+          displayApp->PushMessage(Pinetime::Applications::Display::Messages::UpdateBatteryLevel);
          heartRateApp->PushMessage(Pinetime::Applications::HeartRateTask::Messages::WakeUp);

          isSleeping = false;
@ -152,17 +152,17 @@ void SystemTask::Work() {
          isGoingToSleep = true;
          NRF_LOG_INFO("[systemtask] Going to sleep");
          xTimerStop(idleTimer, 0);
-          displayApp->PushMessage(Pinetime::Applications::DisplayApp::Messages::GoToSleep);
+          displayApp->PushMessage(Pinetime::Applications::Display::Messages::GoToSleep);
          heartRateApp->PushMessage(Pinetime::Applications::HeartRateTask::Messages::GoToSleep);
          break;
        case Messages::OnNewTime:
          ReloadIdleTimer();
-          displayApp->PushMessage(Pinetime::Applications::DisplayApp::Messages::UpdateDateTime);
+          displayApp->PushMessage(Pinetime::Applications::Display::Messages::UpdateDateTime);
          break;
        case Messages::OnNewNotification:
          if(isSleeping && !isWakingUp) GoToRunning();
          if(notificationManager.IsVibrationEnabled()) motorController.SetDuration(35);
-          displayApp->PushMessage(Pinetime::Applications::DisplayApp::Messages::NewNotification);
+          displayApp->PushMessage(Pinetime::Applications::Display::Messages::NewNotification);
          break;
        case Messages::BleConnected:
          ReloadIdleTimer();
@ -172,7 +172,7 @@ void SystemTask::Work() {
        case Messages::BleFirmwareUpdateStarted:
          doNotGoToSleep = true;
          if(isSleeping && !isWakingUp) GoToRunning();
-          displayApp->PushMessage(Pinetime::Applications::DisplayApp::Messages::BleFirmwareUpdateStarted);
+          displayApp->PushMessage(Pinetime::Applications::Display::Messages::BleFirmwareUpdateStarted);
          break;
        case Messages::BleFirmwareUpdateFinished:
          doNotGoToSleep = false;
@ -230,7 +230,7 @@ void SystemTask::OnButtonPushed() {
  if(!isSleeping) {
    NRF_LOG_INFO("[systemtask] Button pushed");
    PushMessage(Messages::OnButtonEvent);
-    displayApp->PushMessage(Pinetime::Applications::DisplayApp::Messages::ButtonPushed);
+    displayApp->PushMessage(Pinetime::Applications::Display::Messages::ButtonPushed);
  }
  else {
    if(!isWakingUp) {
@ -250,7 +250,7 @@ void SystemTask::OnTouchEvent() {
  NRF_LOG_INFO("[systemtask] Touch event");
  if(!isSleeping) {
    PushMessage(Messages::OnTouchEvent);
-    displayApp->PushMessage(Pinetime::Applications::DisplayApp::Messages::TouchEvent);
+    displayApp->PushMessage(Pinetime::Applications::Display::Messages::TouchEvent);
  }
 }

--- a/src/systemtask/SystemTask.h
+++ b/src/systemtask/SystemTask.h
@ -13,7 +13,14 @@
 #include "components/ble/NimbleController.h"
 #include "components/ble/NotificationManager.h"
 #include "components/motor/MotorController.h"
+#ifdef PINETIME_IS_RECOVERY
+#include "displayapp/DisplayAppRecovery.h"
+#include "displayapp/DummyLittleVgl.h"
+#else
 #include "displayapp/DisplayApp.h"
+#include "displayapp/LittleVgl.h"
+#endif
+
 #include "drivers/Watchdog.h"

 namespace Pinetime {
@ -78,6 +85,7 @@ namespace Pinetime {
        Pinetime::Controllers::MotorController& motorController;
        Pinetime::Drivers::Hrs3300& heartRateSensor;
        Pinetime::Controllers::NimbleController nimbleController;
+        Controllers::BrightnessController brightnessController;

        static constexpr uint8_t pinSpiSck = 2;
        static constexpr uint8_t pinSpiMosi = 3;
--- a/tools/bin2c.py
+++ b/tools/bin2c.py
@ -0,0 +1,74 @@
+#!/usr/bin/env python
+#-*- coding: utf-8 -*-
+"""
+    bin2c
+    ~~~~~
+
+    Simple tool for creating C array from a binary file.
+
+    :copyright: (c) 2016 by Dmitry Alimov.
+    :license: The MIT License (MIT), see LICENSE for more details.
+"""
+
+import argparse
+import os
+import re
+import sys
+
+PY3 = sys.version_info[0] == 3
+
+
+def bin2c(filename, varname='data', linesize=80, indent=4):
+    """ Read binary data from file and return as a C array
+
+    :param filename: a filename of a file to read.
+    :param varname: a C array variable name.
+    :param linesize: a size of a line (min value is 40).
+    :param indent: an indent (number of spaces) that prepend each line.
+    """
+    if not os.path.isfile(filename):
+        print('File "%s" is not found!' % filename)
+        return ''
+    if not re.match('[a-zA-Z_][a-zA-Z0-9_]*', varname):
+        print('Invalid variable name "%s"' % varname)
+        return
+    with open(filename, 'rb') as in_file:
+        data = in_file.read()
+    # limit the line length
+    if linesize < 40:
+        linesize = 40
+    byte_len = 6  # '0x00, '
+    out = 'const char %s[%d] = {\n' % (varname, len(data))
+    line = ''
+    for byte in data:
+        line += '0x%02x, ' % (byte if PY3 else ord(byte))
+        if len(line) + indent + byte_len >= linesize:
+            out += ' ' * indent + line + '\n'
+            line = ''
+    # add the last line
+    if len(line) + indent + byte_len < linesize:
+        out += ' ' * indent + line + '\n'
+    # strip the last comma
+    out = out.rstrip(', \n') + '\n'
+    out += '};'
+    return out
+
+
+def main():
+    """ Main func """
+    parser = argparse.ArgumentParser()
+    parser.add_argument(
+        'filename', help='filename to convert to C array')
+    parser.add_argument(
+        'varname', nargs='?', help='variable name', default='data')
+    parser.add_argument(
+        'linesize', nargs='?', help='line length', default=80, type=int)
+    parser.add_argument(
+        'indent', nargs='?', help='indent size', default=4, type=int)
+    args = parser.parse_args()
+    # print out the data
+    print(bin2c(args.filename, args.varname, args.linesize, args.indent))
+
+
+if __name__ == '__main__':
+    main()
--- a/tools/mcuboot/README
+++ b/tools/mcuboot/README
@ -0,0 +1 @@
+This whole folder comes from MCUBoot source files (commit 9015a5d404c2c688166cab81067be53c860d98f4).
--- a/tools/mcuboot/assemble.py
+++ b/tools/mcuboot/assemble.py
@ -0,0 +1,131 @@
+#! /usr/bin/env python3
+#
+# Copyright 2017 Linaro Limited
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""
+Assemble multiple images into a single image that can be flashed on the device.
+"""
+
+import argparse
+import errno
+import io
+import re
+import os.path
+import sys
+
+ZEPHYR_BASE = os.getenv("ZEPHYR_BASE")
+if not ZEPHYR_BASE:
+    sys.exit("$ZEPHYR_BASE environment variable undefined")
+
+sys.path.insert(0, os.path.join(ZEPHYR_BASE, "scripts", "dts"))
+import edtlib
+
+def same_keys(a, b):
+    """Determine if the dicts a and b have the same keys in them"""
+    for ak in a.keys():
+        if ak not in b:
+            return False
+    for bk in b.keys():
+        if bk not in a:
+            return False
+    return True
+
+offset_re = re.compile(r"^#define DT_FLASH_AREA_([0-9A-Z_]+)_OFFSET(_0)?\s+(0x[0-9a-fA-F]+|[0-9]+)$")
+size_re   = re.compile(r"^#define DT_FLASH_AREA_([0-9A-Z_]+)_SIZE(_0)?\s+(0x[0-9a-fA-F]+|[0-9]+)$")
+
+class Assembly():
+    def __init__(self, output, bootdir, edt):
+        self.find_slots(edt)
+        try:
+            os.unlink(output)
+        except OSError as e:
+            if e.errno != errno.ENOENT:
+                raise
+        self.output = output
+
+    def find_slots(self, edt):
+        offsets = {}
+        sizes = {}
+
+        part_nodes = edt.compat2nodes["fixed-partitions"]
+        for node in part_nodes:
+            for child in node.children.values():
+                if "label" in child.props:
+                    label = child.props["label"].val
+                    offsets[label] = child.regs[0].addr
+                    sizes[label] = child.regs[0].size
+
+        if not same_keys(offsets, sizes):
+            raise Exception("Inconsistent data in devicetree.h")
+
+        # We care about the mcuboot, image-0, and image-1 partitions.
+        if 'mcuboot' not in offsets:
+            raise Exception("Board partition table does not have mcuboot partition")
+
+        if 'image-0' not in offsets:
+            raise Exception("Board partition table does not have image-0 partition")
+
+        if 'image-1' not in offsets:
+            raise Exception("Board partition table does not have image-1 partition")
+
+        self.offsets = offsets
+        self.sizes = sizes
+
+    def add_image(self, source, partition):
+        with open(self.output, 'ab') as ofd:
+            pos = ofd.tell()
+            print("partition {}, pos={}, offset={}".format(partition, pos, self.offsets[partition]))
+            if pos > self.offsets[partition]:
+                raise Exception("Partitions not in order, unsupported")
+            if pos < self.offsets[partition]:
+                buf = b'\xFF' * (self.offsets[partition] - pos)
+                ofd.write(buf)
+            with open(source, 'rb') as rfd:
+                ibuf = rfd.read()
+                if len(ibuf) > self.sizes[partition]:
+                    raise Exception("Image {} is too large for partition".format(source))
+            ofd.write(ibuf)
+
+def main():
+    parser = argparse.ArgumentParser()
+
+    parser.add_argument('-b', '--bootdir', required=True,
+                        help='Directory of built bootloader')
+    parser.add_argument('-p', '--primary', required=True,
+                        help='Signed image file for primary image')
+    parser.add_argument('-s', '--secondary',
+                        help='Signed image file for secondary image')
+    parser.add_argument('-o', '--output', required=True,
+                        help='Filename to write full image to')
+
+    args = parser.parse_args()
+
+    # Extract board name from path
+    board = os.path.split(os.path.split(args.bootdir)[0])[1]
+
+    dts_path = os.path.join(args.bootdir, "zephyr", board + ".dts.pre.tmp")
+
+    edt = edtlib.EDT(dts_path, [os.path.join(ZEPHYR_BASE, "dts", "bindings")],
+                     warn_reg_unit_address_mismatch=False)
+
+    output = Assembly(args.output, args.bootdir, edt)
+
+    output.add_image(os.path.join(args.bootdir, 'zephyr', 'zephyr.bin'), 'mcuboot')
+    output.add_image(args.primary, "image-0")
+    if args.secondary is not None:
+        output.add_image(args.secondary, "image-1")
+
+if __name__ == '__main__':
+    main()
--- a/tools/mcuboot/flash.sh
+++ b/tools/mcuboot/flash.sh
@ -0,0 +1,18 @@
+#! /bin/bash
+
+source $(dirname $0)/../target.sh
+
+lscript=/tmp/flash$$.jlink
+
+cat >$lscript <<EOF
+h
+r
+loadfile outdir/$BOARD/zephyr.bin $BASE_BOOT
+loadfile hello.signed.bin $BASE_PRIMARY_SLOT
+loadfile shell.signed.bin $BASE_SECONDARY_SLOT
+q
+EOF
+
+JLinkExe -device $SOC -si SWD -speed auto \
+	-CommanderScript $lscript
+rm $lscript
--- a/tools/mcuboot/gdb-boot.sh
+++ b/tools/mcuboot/gdb-boot.sh
@ -0,0 +1,27 @@
+#! /bin/bash
+
+source $(dirname $0)/../target.sh
+
+gscript=/tmp/init$$.gdb
+
+cat > $gscript <<EOF
+target remote localhost:2331
+symbol-file outdir/$BOARD/zephyr.elf
+# symbol-file ../zephyr/samples/shell/outdir/$BOARD/zephyr.elf
+# dir apps/boot/src
+# dir libs/bootutil/src
+# dir hw/mcu/stm/stm32f4xx/src
+b main
+# b __reset
+# b bootutil_img_validate
+# b cmp_rsasig
+# b bootutil_verify_sig
+# b mbedtls_rsa_public
+# b boot_calloc
+mon reset 2
+layout src
+focus cmd
+EOF
+
+$gdbexe -x $gscript
+rm $gscript
--- a/tools/mcuboot/imgtool.nix
+++ b/tools/mcuboot/imgtool.nix
@ -0,0 +1,30 @@
+#
+# Nix environment for imgtool
+#
+# To install the environment
+#
+# $ nix-env --file imgtool.nix --install env-imgtool
+#
+# To load the environment
+#
+# $ load-env-imgtool
+#
+with import <nixpkgs> {};
+let
+  # Nixpkgs has fairly recent versions of the dependencies, so we can
+  # rely on them without having to build our own derivations.
+  imgtoolPythonEnv = python37.withPackages (
+    _: [
+      python37.pkgs.click
+      python37.pkgs.cryptography
+      python37.pkgs.intelhex
+      python37.pkgs.setuptools
+      python37.pkgs.cbor
+    ]
+  );
+in
+myEnvFun {
+  name = "imgtool";
+
+  buildInputs = [ imgtoolPythonEnv ];
+}
--- a/tools/mcuboot/imgtool.py
+++ b/tools/mcuboot/imgtool.py
@ -0,0 +1,20 @@
+#! /usr/bin/env python3
+#
+# Copyright 2017 Linaro Limited
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from imgtool import main
+
+if __name__ == '__main__':
+    main.imgtool()
--- a/tools/mcuboot/imgtool/init.py
+++ b/tools/mcuboot/imgtool/init.py
@ -0,0 +1,15 @@
+# Copyright 2017 Linaro Limited
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+imgtool_version = "1.6.0rc2"
--- a/tools/mcuboot/imgtool/boot_record.py
+++ b/tools/mcuboot/imgtool/boot_record.py
@ -0,0 +1,47 @@
+# Copyright (c) 2019, Arm Limited.
+# Copyright (c) 2020, Linaro Limited
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from enum import Enum
+import cbor
+
+
+class SwComponent(int, Enum):
+    """
+    Software component property IDs specified by
+    Arm's PSA Attestation API 1.0 document.
+    """
+    TYPE = 1
+    MEASUREMENT_VALUE = 2
+    VERSION = 4
+    SIGNER_ID = 5
+    MEASUREMENT_DESCRIPTION = 6
+
+
+def create_sw_component_data(sw_type, sw_version, sw_measurement_description,
+                             sw_measurement_value, sw_signer_id):
+
+    # List of software component properties (Key ID + value)
+    properties = {
+        SwComponent.TYPE: sw_type,
+        SwComponent.VERSION: sw_version,
+        SwComponent.SIGNER_ID: sw_signer_id,
+        SwComponent.MEASUREMENT_DESCRIPTION: sw_measurement_description,
+    }
+
+    # Note: The measurement value must be the last item of the property
+    #       list because later it will be modified by the bootloader.
+    properties[SwComponent.MEASUREMENT_VALUE] = sw_measurement_value
+
+    return cbor.dumps(properties)
--- a/tools/mcuboot/imgtool/image.py
+++ b/tools/mcuboot/imgtool/image.py
@ -0,0 +1,552 @@
+# Copyright 2018 Nordic Semiconductor ASA
+# Copyright 2017 Linaro Limited
+# Copyright 2019-2020 Arm Limited
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""
+Image signing and management.
+"""
+
+from . import version as versmod
+from .boot_record import create_sw_component_data
+import click
+from enum import Enum
+from intelhex import IntelHex
+import hashlib
+import struct
+import os.path
+from .keys import rsa, ecdsa, x25519
+from cryptography.hazmat.primitives.asymmetric import ec, padding
+from cryptography.hazmat.primitives.asymmetric.x25519 import X25519PrivateKey
+from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes
+from cryptography.hazmat.primitives.kdf.hkdf import HKDF
+from cryptography.hazmat.primitives.serialization import Encoding, PublicFormat
+from cryptography.hazmat.backends import default_backend
+from cryptography.hazmat.primitives import hashes, hmac
+from cryptography.exceptions import InvalidSignature
+
+IMAGE_MAGIC = 0x96f3b83d
+IMAGE_HEADER_SIZE = 32
+BIN_EXT = "bin"
+INTEL_HEX_EXT = "hex"
+DEFAULT_MAX_SECTORS = 128
+MAX_ALIGN = 8
+DEP_IMAGES_KEY = "images"
+DEP_VERSIONS_KEY = "versions"
+MAX_SW_TYPE_LENGTH = 12  # Bytes
+
+# Image header flags.
+IMAGE_F = {
+    'PIC':                   0x0000001,
+    'NON_BOOTABLE':          0x0000010,
+    'RAM_LOAD':              0x0000020,
+    'ENCRYPTED':             0x0000004,
+}
+
+TLV_VALUES = {
+    'KEYHASH': 0x01,
+    'PUBKEY': 0x02,
+    'SHA256': 0x10,
+    'RSA2048': 0x20,
+    'ECDSA224': 0x21,
+    'ECDSA256': 0x22,
+    'RSA3072': 0x23,
+    'ED25519': 0x24,
+    'ENCRSA2048': 0x30,
+    'ENCKW128': 0x31,
+    'ENCEC256': 0x32,
+    'ENCX25519': 0x33,
+    'DEPENDENCY': 0x40,
+    'SEC_CNT': 0x50,
+    'BOOT_RECORD': 0x60,
+}
+
+TLV_SIZE = 4
+TLV_INFO_SIZE = 4
+TLV_INFO_MAGIC = 0x6907
+TLV_PROT_INFO_MAGIC = 0x6908
+
+boot_magic = bytes([
+    0x77, 0xc2, 0x95, 0xf3,
+    0x60, 0xd2, 0xef, 0x7f,
+    0x35, 0x52, 0x50, 0x0f,
+    0x2c, 0xb6, 0x79, 0x80, ])
+
+STRUCT_ENDIAN_DICT = {
+    'little': '<',
+    'big':    '>'
+}
+
+VerifyResult = Enum('VerifyResult',
+                    """
+                    OK INVALID_MAGIC INVALID_TLV_INFO_MAGIC INVALID_HASH
+                    INVALID_SIGNATURE
+                    """)
+
+
+class TLV():
+    def __init__(self, endian, magic=TLV_INFO_MAGIC):
+        self.magic = magic
+        self.buf = bytearray()
+        self.endian = endian
+
+    def __len__(self):
+        return TLV_INFO_SIZE + len(self.buf)
+
+    def add(self, kind, payload):
+        """
+        Add a TLV record.  Kind should be a string found in TLV_VALUES above.
+        """
+        e = STRUCT_ENDIAN_DICT[self.endian]
+        buf = struct.pack(e + 'BBH', TLV_VALUES[kind], 0, len(payload))
+        self.buf += buf
+        self.buf += payload
+
+    def get(self):
+        if len(self.buf) == 0:
+            return bytes()
+        e = STRUCT_ENDIAN_DICT[self.endian]
+        header = struct.pack(e + 'HH', self.magic, len(self))
+        return header + bytes(self.buf)
+
+
+class Image():
+
+    def __init__(self, version=None, header_size=IMAGE_HEADER_SIZE,
+                 pad_header=False, pad=False, confirm=False, align=1,
+                 slot_size=0, max_sectors=DEFAULT_MAX_SECTORS,
+                 overwrite_only=False, endian="little", load_addr=0,
+                 erased_val=None, save_enctlv=False, security_counter=None):
+        self.version = version or versmod.decode_version("0")
+        self.header_size = header_size
+        self.pad_header = pad_header
+        self.pad = pad
+        self.confirm = confirm
+        self.align = align
+        self.slot_size = slot_size
+        self.max_sectors = max_sectors
+        self.overwrite_only = overwrite_only
+        self.endian = endian
+        self.base_addr = None
+        self.load_addr = 0 if load_addr is None else load_addr
+        self.erased_val = 0xff if erased_val is None else int(erased_val, 0)
+        self.payload = []
+        self.enckey = None
+        self.save_enctlv = save_enctlv
+        self.enctlv_len = 0
+
+        if security_counter == 'auto':
+            # Security counter has not been explicitly provided,
+            # generate it from the version number
+            self.security_counter = ((self.version.major << 24)
+                                     + (self.version.minor << 16)
+                                     + self.version.revision)
+        else:
+            self.security_counter = security_counter
+
+    def __repr__(self):
+        return "<Image version={}, header_size={}, security_counter={}, \
+                base_addr={}, load_addr={}, align={}, slot_size={}, \
+                max_sectors={}, overwrite_only={}, endian={} format={}, \
+                payloadlen=0x{:x}>".format(
+            self.version,
+            self.header_size,
+            self.security_counter,
+            self.base_addr if self.base_addr is not None else "N/A",
+            self.load_addr,
+            self.align,
+            self.slot_size,
+            self.max_sectors,
+            self.overwrite_only,
+            self.endian,
+            self.__class__.__name__,
+            len(self.payload))
+
+    def load(self, path):
+        """Load an image from a given file"""
+        ext = os.path.splitext(path)[1][1:].lower()
+        try:
+            if ext == INTEL_HEX_EXT:
+                ih = IntelHex(path)
+                self.payload = ih.tobinarray()
+                self.base_addr = ih.minaddr()
+            else:
+                with open(path, 'rb') as f:
+                    self.payload = f.read()
+        except FileNotFoundError:
+            raise click.UsageError("Input file not found")
+
+        # Add the image header if needed.
+        if self.pad_header and self.header_size > 0:
+            if self.base_addr:
+                # Adjust base_addr for new header
+                self.base_addr -= self.header_size
+            self.payload = bytes([self.erased_val] * self.header_size) + \
+                           self.payload
+
+        self.check_header()
+
+    def save(self, path, hex_addr=None):
+        """Save an image from a given file"""
+        ext = os.path.splitext(path)[1][1:].lower()
+        if ext == INTEL_HEX_EXT:
+            # input was in binary format, but HEX needs to know the base addr
+            if self.base_addr is None and hex_addr is None:
+                raise click.UsageError("No address exists in input file "
+                                       "neither was it provided by user")
+            h = IntelHex()
+            if hex_addr is not None:
+                self.base_addr = hex_addr
+            h.frombytes(bytes=self.payload, offset=self.base_addr)
+            if self.pad:
+                trailer_size = self._trailer_size(self.align, self.max_sectors,
+                                                  self.overwrite_only,
+                                                  self.enckey,
+                                                  self.save_enctlv,
+                                                  self.enctlv_len)
+                trailer_addr = (self.base_addr + self.slot_size) - trailer_size
+                padding = bytes([self.erased_val] *
+                                (trailer_size - len(boot_magic))) + boot_magic
+                h.puts(trailer_addr, padding)
+            h.tofile(path, 'hex')
+        else:
+            if self.pad:
+                self.pad_to(self.slot_size)
+            with open(path, 'wb') as f:
+                f.write(self.payload)
+
+    def check_header(self):
+        if self.header_size > 0 and not self.pad_header:
+            if any(v != 0 for v in self.payload[0:self.header_size]):
+                raise click.UsageError("Header padding was not requested and "
+                                       "image does not start with zeros")
+
+    def check_trailer(self):
+        if self.slot_size > 0:
+            tsize = self._trailer_size(self.align, self.max_sectors,
+                                       self.overwrite_only, self.enckey,
+                                       self.save_enctlv, self.enctlv_len)
+            padding = self.slot_size - (len(self.payload) + tsize)
+            if padding < 0:
+                msg = "Image size (0x{:x}) + trailer (0x{:x}) exceeds " \
+                      "requested size 0x{:x}".format(
+                    len(self.payload), tsize, self.slot_size)
+                raise click.UsageError(msg)
+
+    def ecies_hkdf(self, enckey, plainkey):
+        if isinstance(enckey, ecdsa.ECDSA256P1Public):
+            newpk = ec.generate_private_key(ec.SECP256R1(), default_backend())
+            shared = newpk.exchange(ec.ECDH(), enckey._get_public())
+        else:
+            newpk = X25519PrivateKey.generate()
+            shared = newpk.exchange(enckey._get_public())
+        derived_key = HKDF(
+            algorithm=hashes.SHA256(), length=48, salt=None,
+            info=b'MCUBoot_ECIES_v1', backend=default_backend()).derive(shared)
+        encryptor = Cipher(algorithms.AES(derived_key[:16]),
+                           modes.CTR(bytes([0] * 16)),
+                           backend=default_backend()).encryptor()
+        cipherkey = encryptor.update(plainkey) + encryptor.finalize()
+        mac = hmac.HMAC(derived_key[16:], hashes.SHA256(),
+                        backend=default_backend())
+        mac.update(cipherkey)
+        ciphermac = mac.finalize()
+        if isinstance(enckey, ecdsa.ECDSA256P1Public):
+            pubk = newpk.public_key().public_bytes(
+                encoding=Encoding.X962,
+                format=PublicFormat.UncompressedPoint)
+        else:
+            pubk = newpk.public_key().public_bytes(
+                encoding=Encoding.Raw,
+                format=PublicFormat.Raw)
+        return cipherkey, ciphermac, pubk
+
+    def create(self, key, public_key_format, enckey, dependencies=None,
+               sw_type=None):
+        self.enckey = enckey
+
+        # Calculate the hash of the public key
+        if key is not None:
+            pub = key.get_public_bytes()
+            sha = hashlib.sha256()
+            sha.update(pub)
+            pubbytes = sha.digest()
+        else:
+            pubbytes = bytes(hashlib.sha256().digest_size)
+
+        protected_tlv_size = 0
+
+        if self.security_counter is not None:
+            # Size of the security counter TLV: header ('HH') + payload ('I')
+            #                                   = 4 + 4 = 8 Bytes
+            protected_tlv_size += TLV_SIZE + 4
+
+        if sw_type is not None:
+            if len(sw_type) > MAX_SW_TYPE_LENGTH:
+                msg = "'{}' is too long ({} characters) for sw_type. Its " \
+                      "maximum allowed length is 12 characters.".format(
+                    sw_type, len(sw_type))
+                raise click.UsageError(msg)
+
+            image_version = (str(self.version.major) + '.'
+                             + str(self.version.minor) + '.'
+                             + str(self.version.revision))
+
+            # The image hash is computed over the image header, the image
+            # itself and the protected TLV area. However, the boot record TLV
+            # (which is part of the protected area) should contain this hash
+            # before it is even calculated. For this reason the script fills
+            # this field with zeros and the bootloader will insert the right
+            # value later.
+            digest = bytes(hashlib.sha256().digest_size)
+
+            # Create CBOR encoded boot record
+            boot_record = create_sw_component_data(sw_type, image_version,
+                                                   "SHA256", digest,
+                                                   pubbytes)
+
+            protected_tlv_size += TLV_SIZE + len(boot_record)
+
+        if dependencies is not None:
+            # Size of a Dependency TLV = Header ('HH') + Payload('IBBHI')
+            # = 4 + 12 = 16 Bytes
+            dependencies_num = len(dependencies[DEP_IMAGES_KEY])
+            protected_tlv_size += (dependencies_num * 16)
+
+        if protected_tlv_size != 0:
+            # Add the size of the TLV info header
+            protected_tlv_size += TLV_INFO_SIZE
+
+        # At this point the image is already on the payload, this adds
+        # the header to the payload as well
+        self.add_header(enckey, protected_tlv_size)
+
+        prot_tlv = TLV(self.endian, TLV_PROT_INFO_MAGIC)
+
+        # Protected TLVs must be added first, because they are also included
+        # in the hash calculation
+        protected_tlv_off = None
+        if protected_tlv_size != 0:
+
+            e = STRUCT_ENDIAN_DICT[self.endian]
+
+            if self.security_counter is not None:
+                payload = struct.pack(e + 'I', self.security_counter)
+                prot_tlv.add('SEC_CNT', payload)
+
+            if sw_type is not None:
+                prot_tlv.add('BOOT_RECORD', boot_record)
+
+            if dependencies is not None:
+                for i in range(dependencies_num):
+                    payload = struct.pack(
+                        e + 'B3x'+'BBHI',
+                        int(dependencies[DEP_IMAGES_KEY][i]),
+                        dependencies[DEP_VERSIONS_KEY][i].major,
+                        dependencies[DEP_VERSIONS_KEY][i].minor,
+                        dependencies[DEP_VERSIONS_KEY][i].revision,
+                        dependencies[DEP_VERSIONS_KEY][i].build
+                    )
+                    prot_tlv.add('DEPENDENCY', payload)
+
+            protected_tlv_off = len(self.payload)
+            self.payload += prot_tlv.get()
+
+        tlv = TLV(self.endian)
+
+        # Note that ecdsa wants to do the hashing itself, which means
+        # we get to hash it twice.
+        sha = hashlib.sha256()
+        sha.update(self.payload)
+        digest = sha.digest()
+
+        tlv.add('SHA256', digest)
+
+        if key is not None:
+            if public_key_format == 'hash':
+                tlv.add('KEYHASH', pubbytes)
+            else:
+                tlv.add('PUBKEY', pub)
+
+            # `sign` expects the full image payload (sha256 done internally),
+            # while `sign_digest` expects only the digest of the payload
+
+            if hasattr(key, 'sign'):
+                sig = key.sign(bytes(self.payload))
+            else:
+                sig = key.sign_digest(digest)
+            tlv.add(key.sig_tlv(), sig)
+
+        # At this point the image was hashed + signed, we can remove the
+        # protected TLVs from the payload (will be re-added later)
+        if protected_tlv_off is not None:
+            self.payload = self.payload[:protected_tlv_off]
+
+        if enckey is not None:
+            plainkey = os.urandom(16)
+
+            if isinstance(enckey, rsa.RSAPublic):
+                cipherkey = enckey._get_public().encrypt(
+                    plainkey, padding.OAEP(
+                        mgf=padding.MGF1(algorithm=hashes.SHA256()),
+                        algorithm=hashes.SHA256(),
+                        label=None))
+                self.enctlv_len = len(cipherkey)
+                tlv.add('ENCRSA2048', cipherkey)
+            elif isinstance(enckey, (ecdsa.ECDSA256P1Public,
+                                     x25519.X25519Public)):
+                cipherkey, mac, pubk = self.ecies_hkdf(enckey, plainkey)
+                enctlv = pubk + mac + cipherkey
+                self.enctlv_len = len(enctlv)
+                if isinstance(enckey, ecdsa.ECDSA256P1Public):
+                    tlv.add('ENCEC256', enctlv)
+                else:
+                    tlv.add('ENCX25519', enctlv)
+
+            nonce = bytes([0] * 16)
+            cipher = Cipher(algorithms.AES(plainkey), modes.CTR(nonce),
+                            backend=default_backend())
+            encryptor = cipher.encryptor()
+            img = bytes(self.payload[self.header_size:])
+            self.payload[self.header_size:] = \
+                encryptor.update(img) + encryptor.finalize()
+
+        self.payload += prot_tlv.get()
+        self.payload += tlv.get()
+
+        self.check_trailer()
+
+    def add_header(self, enckey, protected_tlv_size):
+        """Install the image header."""
+
+        flags = 0
+        if enckey is not None:
+            flags |= IMAGE_F['ENCRYPTED']
+        if self.load_addr != 0:
+            # Indicates that this image should be loaded into RAM
+            # instead of run directly from flash.
+            flags |= IMAGE_F['RAM_LOAD']
+
+        e = STRUCT_ENDIAN_DICT[self.endian]
+        fmt = (e +
+               # type ImageHdr struct {
+               'I' +     # Magic    uint32
+               'I' +     # LoadAddr uint32
+               'H' +     # HdrSz    uint16
+               'H' +     # PTLVSz   uint16
+               'I' +     # ImgSz    uint32
+               'I' +     # Flags    uint32
+               'BBHI' +  # Vers     ImageVersion
+               'I'       # Pad1     uint32
+               )  # }
+        assert struct.calcsize(fmt) == IMAGE_HEADER_SIZE
+        header = struct.pack(fmt,
+                             IMAGE_MAGIC,
+                             self.load_addr,
+                             self.header_size,
+                             protected_tlv_size,  # TLV Info header + Protected TLVs
+                             len(self.payload) - self.header_size,  # ImageSz
+                             flags,
+                             self.version.major,
+                             self.version.minor or 0,
+                             self.version.revision or 0,
+                             self.version.build or 0,
+                             0)  # Pad1
+        self.payload = bytearray(self.payload)
+        self.payload[:len(header)] = header
+
+    def _trailer_size(self, write_size, max_sectors, overwrite_only, enckey,
+                      save_enctlv, enctlv_len):
+        # NOTE: should already be checked by the argument parser
+        magic_size = 16
+        if overwrite_only:
+            return MAX_ALIGN * 2 + magic_size
+        else:
+            if write_size not in set([1, 2, 4, 8]):
+                raise click.BadParameter("Invalid alignment: {}".format(
+                    write_size))
+            m = DEFAULT_MAX_SECTORS if max_sectors is None else max_sectors
+            trailer = m * 3 * write_size  # status area
+            if enckey is not None:
+                if save_enctlv:
+                    # TLV saved by the bootloader is aligned
+                    keylen = (int((enctlv_len - 1) / MAX_ALIGN) + 1) * MAX_ALIGN
+                else:
+                    keylen = 16
+                trailer += keylen * 2  # encryption keys
+            trailer += MAX_ALIGN * 4  # image_ok/copy_done/swap_info/swap_size
+            trailer += magic_size
+            return trailer
+
+    def pad_to(self, size):
+        """Pad the image to the given size, with the given flash alignment."""
+        tsize = self._trailer_size(self.align, self.max_sectors,
+                                   self.overwrite_only, self.enckey,
+                                   self.save_enctlv, self.enctlv_len)
+        padding = size - (len(self.payload) + tsize)
+        pbytes = bytearray([self.erased_val] * padding)
+        pbytes += bytearray([self.erased_val] * (tsize - len(boot_magic)))
+        if self.confirm and not self.overwrite_only:
+            pbytes[-MAX_ALIGN] = 0x01  # image_ok = 0x01
+        pbytes += boot_magic
+        self.payload += pbytes
+
+    @staticmethod
+    def verify(imgfile, key):
+        with open(imgfile, "rb") as f:
+            b = f.read()
+
+        magic, _, header_size, _, img_size = struct.unpack('IIHHI', b[:16])
+        version = struct.unpack('BBHI', b[20:28])
+
+        if magic != IMAGE_MAGIC:
+            return VerifyResult.INVALID_MAGIC, None
+
+        tlv_info = b[header_size+img_size:header_size+img_size+TLV_INFO_SIZE]
+        magic, tlv_tot = struct.unpack('HH', tlv_info)
+        if magic != TLV_INFO_MAGIC:
+            return VerifyResult.INVALID_TLV_INFO_MAGIC, None
+
+        sha = hashlib.sha256()
+        sha.update(b[:header_size+img_size])
+        digest = sha.digest()
+
+        tlv_off = header_size + img_size
+        tlv_end = tlv_off + tlv_tot
+        tlv_off += TLV_INFO_SIZE  # skip tlv info
+        while tlv_off < tlv_end:
+            tlv = b[tlv_off:tlv_off+TLV_SIZE]
+            tlv_type, _, tlv_len = struct.unpack('BBH', tlv)
+            if tlv_type == TLV_VALUES["SHA256"]:
+                off = tlv_off + TLV_SIZE
+                if digest == b[off:off+tlv_len]:
+                    if key is None:
+                        return VerifyResult.OK, version
+                else:
+                    return VerifyResult.INVALID_HASH, None
+            elif key is not None and tlv_type == TLV_VALUES[key.sig_tlv()]:
+                off = tlv_off + TLV_SIZE
+                tlv_sig = b[off:off+tlv_len]
+                payload = b[:header_size+img_size]
+                try:
+                    if hasattr(key, 'verify'):
+                        key.verify(tlv_sig, payload)
+                    else:
+                        key.verify_digest(tlv_sig, digest)
+                    return VerifyResult.OK, version
+                except InvalidSignature:
+                    # continue to next TLV
+                    pass
+            tlv_off += TLV_SIZE + tlv_len
+        return VerifyResult.INVALID_SIGNATURE, None
--- a/tools/mcuboot/imgtool/keys/init.py
+++ b/tools/mcuboot/imgtool/keys/init.py
@ -0,0 +1,94 @@
+# Copyright 2017 Linaro Limited
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""
+Cryptographic key management for imgtool.
+"""
+
+from cryptography.hazmat.backends import default_backend
+from cryptography.hazmat.primitives import serialization
+from cryptography.hazmat.primitives.asymmetric.rsa import (
+    RSAPrivateKey, RSAPublicKey)
+from cryptography.hazmat.primitives.asymmetric.ec import (
+    EllipticCurvePrivateKey, EllipticCurvePublicKey)
+from cryptography.hazmat.primitives.asymmetric.ed25519 import (
+    Ed25519PrivateKey, Ed25519PublicKey)
+from cryptography.hazmat.primitives.asymmetric.x25519 import (
+    X25519PrivateKey, X25519PublicKey)
+
+from .rsa import RSA, RSAPublic, RSAUsageError, RSA_KEY_SIZES
+from .ecdsa import ECDSA256P1, ECDSA256P1Public, ECDSAUsageError
+from .ed25519 import Ed25519, Ed25519Public, Ed25519UsageError
+from .x25519 import X25519, X25519Public, X25519UsageError
+
+
+class PasswordRequired(Exception):
+    """Raised to indicate that the key is password protected, but a
+    password was not specified."""
+    pass
+
+
+def load(path, passwd=None):
+    """Try loading a key from the given path.  Returns None if the password wasn't specified."""
+    with open(path, 'rb') as f:
+        raw_pem = f.read()
+    try:
+        pk = serialization.load_pem_private_key(
+            raw_pem,
+            password=passwd,
+            backend=default_backend())
+    # Unfortunately, the crypto library raises unhelpful exceptions,
+    # so we have to look at the text.
+    except TypeError as e:
+        msg = str(e)
+        if "private key is encrypted" in msg:
+            return None
+        raise e
+    except ValueError:
+        # This seems to happen if the key is a public key, let's try
+        # loading it as a public key.
+        pk = serialization.load_pem_public_key(
+            raw_pem,
+            backend=default_backend())
+
+    if isinstance(pk, RSAPrivateKey):
+        if pk.key_size not in RSA_KEY_SIZES:
+            raise Exception("Unsupported RSA key size: " + pk.key_size)
+        return RSA(pk)
+    elif isinstance(pk, RSAPublicKey):
+        if pk.key_size not in RSA_KEY_SIZES:
+            raise Exception("Unsupported RSA key size: " + pk.key_size)
+        return RSAPublic(pk)
+    elif isinstance(pk, EllipticCurvePrivateKey):
+        if pk.curve.name != 'secp256r1':
+            raise Exception("Unsupported EC curve: " + pk.curve.name)
+        if pk.key_size != 256:
+            raise Exception("Unsupported EC size: " + pk.key_size)
+        return ECDSA256P1(pk)
+    elif isinstance(pk, EllipticCurvePublicKey):
+        if pk.curve.name != 'secp256r1':
+            raise Exception("Unsupported EC curve: " + pk.curve.name)
+        if pk.key_size != 256:
+            raise Exception("Unsupported EC size: " + pk.key_size)
+        return ECDSA256P1Public(pk)
+    elif isinstance(pk, Ed25519PrivateKey):
+        return Ed25519(pk)
+    elif isinstance(pk, Ed25519PublicKey):
+        return Ed25519Public(pk)
+    elif isinstance(pk, X25519PrivateKey):
+        return X25519(pk)
+    elif isinstance(pk, X25519PublicKey):
+        return X25519Public(pk)
+    else:
+        raise Exception("Unknown key type: " + str(type(pk)))
--- a/tools/mcuboot/imgtool/keys/ecdsa.py
+++ b/tools/mcuboot/imgtool/keys/ecdsa.py
@ -0,0 +1,157 @@
+"""
+ECDSA key management
+"""
+
+from cryptography.hazmat.backends import default_backend
+from cryptography.hazmat.primitives import serialization
+from cryptography.hazmat.primitives.asymmetric import ec
+from cryptography.hazmat.primitives.hashes import SHA256
+
+from .general import KeyClass
+
+class ECDSAUsageError(Exception):
+    pass
+
+class ECDSA256P1Public(KeyClass):
+    def __init__(self, key):
+        self.key = key
+
+    def shortname(self):
+        return "ecdsa"
+
+    def _unsupported(self, name):
+        raise ECDSAUsageError("Operation {} requires private key".format(name))
+
+    def _get_public(self):
+        return self.key
+
+    def get_public_bytes(self):
+        # The key is embedded into MBUboot in "SubjectPublicKeyInfo" format
+        return self._get_public().public_bytes(
+            encoding=serialization.Encoding.DER,
+            format=serialization.PublicFormat.SubjectPublicKeyInfo)
+
+    def get_private_bytes(self, minimal):
+        self._unsupported('get_private_bytes')
+
+    def export_private(self, path, passwd=None):
+        self._unsupported('export_private')
+
+    def export_public(self, path):
+        """Write the public key to the given file."""
+        pem = self._get_public().public_bytes(
+            encoding=serialization.Encoding.PEM,
+            format=serialization.PublicFormat.SubjectPublicKeyInfo)
+        with open(path, 'wb') as f:
+            f.write(pem)
+
+    def sig_type(self):
+        return "ECDSA256_SHA256"
+
+    def sig_tlv(self):
+        return "ECDSA256"
+
+    def sig_len(self):
+        # Early versions of MCUboot (< v1.5.0) required ECDSA
+        # signatures to be padded to 72 bytes.  Because the DER
+        # encoding is done with signed integers, the size of the
+        # signature will vary depending on whether the high bit is set
+        # in each value.  This padding was done in a
+        # not-easily-reversible way (by just adding zeros).
+        #
+        # The signing code no longer requires this padding, and newer
+        # versions of MCUboot don't require it.  But, continue to
+        # return the total length so that the padding can be done if
+        # requested.
+        return 72
+
+    def verify(self, signature, payload):
+        # strip possible paddings added during sign
+        signature = signature[:signature[1] + 2]
+        k = self.key
+        if isinstance(self.key, ec.EllipticCurvePrivateKey):
+            k = self.key.public_key()
+        return k.verify(signature=signature, data=payload,
+                        signature_algorithm=ec.ECDSA(SHA256()))
+
+
+class ECDSA256P1(ECDSA256P1Public):
+    """
+    Wrapper around an ECDSA private key.
+    """
+
+    def __init__(self, key):
+        """key should be an instance of EllipticCurvePrivateKey"""
+        self.key = key
+        self.pad_sig = False
+
+    @staticmethod
+    def generate():
+        pk = ec.generate_private_key(
+            ec.SECP256R1(),
+            backend=default_backend())
+        return ECDSA256P1(pk)
+
+    def _get_public(self):
+        return self.key.public_key()
+
+    def _build_minimal_ecdsa_privkey(self, der):
+        '''
+        Builds a new DER that only includes the EC private key, removing the
+        public key that is added as an "optional" BITSTRING.
+        '''
+        offset_PUB = 68
+        EXCEPTION_TEXT = "Error parsing ecdsa key. Please submit an issue!"
+        if der[offset_PUB] != 0xa1:
+            raise ECDSAUsageError(EXCEPTION_TEXT)
+        len_PUB = der[offset_PUB + 1]
+        b = bytearray(der[:-offset_PUB])
+        offset_SEQ = 29
+        if b[offset_SEQ] != 0x30:
+            raise ECDSAUsageError(EXCEPTION_TEXT)
+        b[offset_SEQ + 1] -= len_PUB
+        offset_OCT_STR = 27
+        if b[offset_OCT_STR] != 0x04:
+            raise ECDSAUsageError(EXCEPTION_TEXT)
+        b[offset_OCT_STR + 1] -= len_PUB
+        if b[0] != 0x30 or b[1] != 0x81:
+            raise ECDSAUsageError(EXCEPTION_TEXT)
+        b[2] -= len_PUB
+        return b
+
+    def get_private_bytes(self, minimal):
+        priv = self.key.private_bytes(
+            encoding=serialization.Encoding.DER,
+            format=serialization.PrivateFormat.PKCS8,
+            encryption_algorithm=serialization.NoEncryption())
+        if minimal:
+            priv = self._build_minimal_ecdsa_privkey(priv)
+        return priv
+
+    def export_private(self, path, passwd=None):
+        """Write the private key to the given file, protecting it with the optional password."""
+        if passwd is None:
+            enc = serialization.NoEncryption()
+        else:
+            enc = serialization.BestAvailableEncryption(passwd)
+        pem = self.key.private_bytes(
+            encoding=serialization.Encoding.PEM,
+            format=serialization.PrivateFormat.PKCS8,
+            encryption_algorithm=enc)
+        with open(path, 'wb') as f:
+            f.write(pem)
+
+    def raw_sign(self, payload):
+        """Return the actual signature"""
+        return self.key.sign(
+            data=payload,
+            signature_algorithm=ec.ECDSA(SHA256()))
+
+    def sign(self, payload):
+        sig = self.raw_sign(payload)
+        if self.pad_sig:
+            # To make fixed length, pad with one or two zeros.
+            sig += b'\000' * (self.sig_len() - len(sig))
+            return sig
+        else:
+            return sig
--- a/tools/mcuboot/imgtool/keys/ecdsa_test.py
+++ b/tools/mcuboot/imgtool/keys/ecdsa_test.py
@ -0,0 +1,99 @@
+"""
+Tests for ECDSA keys
+"""
+
+import io
+import os.path
+import sys
+import tempfile
+import unittest
+
+from cryptography.exceptions import InvalidSignature
+from cryptography.hazmat.primitives.asymmetric import ec
+from cryptography.hazmat.primitives.hashes import SHA256
+
+sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), '../..')))
+
+from imgtool.keys import load, ECDSA256P1, ECDSAUsageError
+
+class EcKeyGeneration(unittest.TestCase):
+
+    def setUp(self):
+        self.test_dir = tempfile.TemporaryDirectory()
+
+    def tname(self, base):
+        return os.path.join(self.test_dir.name, base)
+
+    def tearDown(self):
+        self.test_dir.cleanup()
+
+    def test_keygen(self):
+        name1 = self.tname("keygen.pem")
+        k = ECDSA256P1.generate()
+        k.export_private(name1, b'secret')
+
+        self.assertIsNone(load(name1))
+
+        k2 = load(name1, b'secret')
+
+        pubname = self.tname('keygen-pub.pem')
+        k2.export_public(pubname)
+        pk2 = load(pubname)
+
+        # We should be able to export the public key from the loaded
+        # public key, but not the private key.
+        pk2.export_public(self.tname('keygen-pub2.pem'))
+        self.assertRaises(ECDSAUsageError,
+                          pk2.export_private, self.tname('keygen-priv2.pem'))
+
+    def test_emit(self):
+        """Basic sanity check on the code emitters."""
+        k = ECDSA256P1.generate()
+
+        ccode = io.StringIO()
+        k.emit_c_public(ccode)
+        self.assertIn("ecdsa_pub_key", ccode.getvalue())
+        self.assertIn("ecdsa_pub_key_len", ccode.getvalue())
+
+        rustcode = io.StringIO()
+        k.emit_rust_public(rustcode)
+        self.assertIn("ECDSA_PUB_KEY", rustcode.getvalue())
+
+    def test_emit_pub(self):
+        """Basic sanity check on the code emitters."""
+        pubname = self.tname("public.pem")
+        k = ECDSA256P1.generate()
+        k.export_public(pubname)
+
+        k2 = load(pubname)
+
+        ccode = io.StringIO()
+        k2.emit_c_public(ccode)
+        self.assertIn("ecdsa_pub_key", ccode.getvalue())
+        self.assertIn("ecdsa_pub_key_len", ccode.getvalue())
+
+        rustcode = io.StringIO()
+        k2.emit_rust_public(rustcode)
+        self.assertIn("ECDSA_PUB_KEY", rustcode.getvalue())
+
+    def test_sig(self):
+        k = ECDSA256P1.generate()
+        buf = b'This is the message'
+        sig = k.raw_sign(buf)
+
+        # The code doesn't have any verification, so verify this
+        # manually.
+        k.key.public_key().verify(
+            signature=sig,
+            data=buf,
+            signature_algorithm=ec.ECDSA(SHA256()))
+
+        # Modify the message to make sure the signature fails.
+        self.assertRaises(InvalidSignature,
+                          k.key.public_key().verify,
+                          signature=sig,
+                          data=b'This is thE message',
+                          signature_algorithm=ec.ECDSA(SHA256()))
+
+if __name__ == '__main__':
+    unittest.main()
--- a/tools/mcuboot/imgtool/keys/ed25519.py
+++ b/tools/mcuboot/imgtool/keys/ed25519.py
@ -0,0 +1,105 @@
+"""
+ED25519 key management
+"""
+
+from cryptography.hazmat.backends import default_backend
+from cryptography.hazmat.primitives import serialization
+from cryptography.hazmat.primitives.asymmetric import ed25519
+
+from .general import KeyClass
+
+
+class Ed25519UsageError(Exception):
+    pass
+
+
+class Ed25519Public(KeyClass):
+    def __init__(self, key):
+        self.key = key
+
+    def shortname(self):
+        return "ed25519"
+
+    def _unsupported(self, name):
+        raise Ed25519UsageError("Operation {} requires private key".format(name))
+
+    def _get_public(self):
+        return self.key
+
+    def get_public_bytes(self):
+        # The key is embedded into MBUboot in "SubjectPublicKeyInfo" format
+        return self._get_public().public_bytes(
+            encoding=serialization.Encoding.DER,
+            format=serialization.PublicFormat.SubjectPublicKeyInfo)
+
+    def get_private_bytes(self, minimal):
+        self._unsupported('get_private_bytes')
+
+    def export_private(self, path, passwd=None):
+        self._unsupported('export_private')
+
+    def export_public(self, path):
+        """Write the public key to the given file."""
+        pem = self._get_public().public_bytes(
+            encoding=serialization.Encoding.PEM,
+            format=serialization.PublicFormat.SubjectPublicKeyInfo)
+        with open(path, 'wb') as f:
+            f.write(pem)
+
+    def sig_type(self):
+        return "ED25519"
+
+    def sig_tlv(self):
+        return "ED25519"
+
+    def sig_len(self):
+        return 64
+
+
+class Ed25519(Ed25519Public):
+    """
+    Wrapper around an ED25519 private key.
+    """
+
+    def __init__(self, key):
+        """key should be an instance of EllipticCurvePrivateKey"""
+        self.key = key
+
+    @staticmethod
+    def generate():
+        pk = ed25519.Ed25519PrivateKey.generate()
+        return Ed25519(pk)
+
+    def _get_public(self):
+        return self.key.public_key()
+
+    def get_private_bytes(self, minimal):
+        raise Ed25519UsageError("Operation not supported with {} keys".format(
+            self.shortname()))
+
+    def export_private(self, path, passwd=None):
+        """
+        Write the private key to the given file, protecting it with the
+        optional password.
+        """
+        if passwd is None:
+            enc = serialization.NoEncryption()
+        else:
+            enc = serialization.BestAvailableEncryption(passwd)
+        pem = self.key.private_bytes(
+            encoding=serialization.Encoding.PEM,
+            format=serialization.PrivateFormat.PKCS8,
+            encryption_algorithm=enc)
+        with open(path, 'wb') as f:
+            f.write(pem)
+
+    def sign_digest(self, digest):
+        """Return the actual signature"""
+        return self.key.sign(data=digest)
+
+    def verify_digest(self, signature, digest):
+        """Verify that signature is valid for given digest"""
+        k = self.key
+        if isinstance(self.key, ed25519.Ed25519PrivateKey):
+            k = self.key.public_key()
+        return k.verify(signature=signature, data=digest)
--- a/tools/mcuboot/imgtool/keys/ed25519_test.py
+++ b/tools/mcuboot/imgtool/keys/ed25519_test.py
@ -0,0 +1,103 @@
+"""
+Tests for ECDSA keys
+"""
+
+import hashlib
+import io
+import os.path
+import sys
+import tempfile
+import unittest
+
+from cryptography.exceptions import InvalidSignature
+from cryptography.hazmat.primitives.asymmetric import ed25519
+
+sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), '../..')))
+
+from imgtool.keys import load, Ed25519, Ed25519UsageError
+
+
+class Ed25519KeyGeneration(unittest.TestCase):
+
+    def setUp(self):
+        self.test_dir = tempfile.TemporaryDirectory()
+
+    def tname(self, base):
+        return os.path.join(self.test_dir.name, base)
+
+    def tearDown(self):
+        self.test_dir.cleanup()
+
+    def test_keygen(self):
+        name1 = self.tname("keygen.pem")
+        k = Ed25519.generate()
+        k.export_private(name1, b'secret')
+
+        self.assertIsNone(load(name1))
+
+        k2 = load(name1, b'secret')
+
+        pubname = self.tname('keygen-pub.pem')
+        k2.export_public(pubname)
+        pk2 = load(pubname)
+
+        # We should be able to export the public key from the loaded
+        # public key, but not the private key.
+        pk2.export_public(self.tname('keygen-pub2.pem'))
+        self.assertRaises(Ed25519UsageError,
+                          pk2.export_private, self.tname('keygen-priv2.pem'))
+
+    def test_emit(self):
+        """Basic sanity check on the code emitters."""
+        k = Ed25519.generate()
+
+        ccode = io.StringIO()
+        k.emit_c_public(ccode)
+        self.assertIn("ed25519_pub_key", ccode.getvalue())
+        self.assertIn("ed25519_pub_key_len", ccode.getvalue())
+
+        rustcode = io.StringIO()
+        k.emit_rust_public(rustcode)
+        self.assertIn("ED25519_PUB_KEY", rustcode.getvalue())
+
+    def test_emit_pub(self):
+        """Basic sanity check on the code emitters."""
+        pubname = self.tname("public.pem")
+        k = Ed25519.generate()
+        k.export_public(pubname)
+
+        k2 = load(pubname)
+
+        ccode = io.StringIO()
+        k2.emit_c_public(ccode)
+        self.assertIn("ed25519_pub_key", ccode.getvalue())
+        self.assertIn("ed25519_pub_key_len", ccode.getvalue())
+
+        rustcode = io.StringIO()
+        k2.emit_rust_public(rustcode)
+        self.assertIn("ED25519_PUB_KEY", rustcode.getvalue())
+
+    def test_sig(self):
+        k = Ed25519.generate()
+        buf = b'This is the message'
+        sha = hashlib.sha256()
+        sha.update(buf)
+        digest = sha.digest()
+        sig = k.sign_digest(digest)
+
+        # The code doesn't have any verification, so verify this
+        # manually.
+        k.key.public_key().verify(signature=sig, data=digest)
+
+        # Modify the message to make sure the signature fails.
+        sha = hashlib.sha256()
+        sha.update(b'This is thE message')
+        new_digest = sha.digest()
+        self.assertRaises(InvalidSignature,
+                          k.key.public_key().verify,
+                          signature=sig,
+                          data=new_digest)
+
+
+if __name__ == '__main__':
+    unittest.main()
--- a/tools/mcuboot/imgtool/keys/general.py
+++ b/tools/mcuboot/imgtool/keys/general.py
@ -0,0 +1,45 @@
+"""General key class."""
+
+import sys
+
+AUTOGEN_MESSAGE = "/* Autogenerated by imgtool.py, do not edit. */"
+
+class KeyClass(object):
+    def _emit(self, header, trailer, encoded_bytes, indent, file=sys.stdout, len_format=None):
+        print(AUTOGEN_MESSAGE, file=file)
+        print(header, end='', file=file)
+        for count, b in enumerate(encoded_bytes):
+            if count % 8 == 0:
+                print("\n" + indent, end='', file=file)
+            else:
+                print(" ", end='', file=file)
+            print("0x{:02x},".format(b), end='', file=file)
+        print("\n" + trailer, file=file)
+        if len_format is not None:
+            print(len_format.format(len(encoded_bytes)), file=file)
+
+    def emit_c_public(self, file=sys.stdout):
+        self._emit(
+            header="const unsigned char {}_pub_key[] = {{".format(self.shortname()),
+            trailer="};",
+            encoded_bytes=self.get_public_bytes(),
+            indent="    ",
+            len_format="const unsigned int {}_pub_key_len = {{}};".format(self.shortname()),
+            file=file)
+
+    def emit_rust_public(self, file=sys.stdout):
+        self._emit(
+            header="static {}_PUB_KEY: &'static [u8] = &[".format(self.shortname().upper()),
+            trailer="];",
+            encoded_bytes=self.get_public_bytes(),
+            indent="    ",
+            file=file)
+
+    def emit_private(self, minimal, file=sys.stdout):
+        self._emit(
+            header="const unsigned char enc_priv_key[] = {",
+            trailer="};",
+            encoded_bytes=self.get_private_bytes(minimal),
+            indent="    ",
+            len_format="const unsigned int enc_priv_key_len = {};",
+            file=file)
--- a/tools/mcuboot/imgtool/keys/rsa.py
+++ b/tools/mcuboot/imgtool/keys/rsa.py
@ -0,0 +1,163 @@
+"""
+RSA Key management
+"""
+
+from cryptography.hazmat.backends import default_backend
+from cryptography.hazmat.primitives import serialization
+from cryptography.hazmat.primitives.asymmetric import rsa
+from cryptography.hazmat.primitives.asymmetric.padding import PSS, MGF1
+from cryptography.hazmat.primitives.hashes import SHA256
+
+from .general import KeyClass
+
+
+# Sizes that bootutil will recognize
+RSA_KEY_SIZES = [2048, 3072]
+
+
+class RSAUsageError(Exception):
+    pass
+
+
+class RSAPublic(KeyClass):
+    """The public key can only do a few operations"""
+    def __init__(self, key):
+        self.key = key
+
+    def key_size(self):
+        return self.key.key_size
+
+    def shortname(self):
+        return "rsa"
+
+    def _unsupported(self, name):
+        raise RSAUsageError("Operation {} requires private key".format(name))
+
+    def _get_public(self):
+        return self.key
+
+    def get_public_bytes(self):
+        # The key embedded into MCUboot is in PKCS1 format.
+        return self._get_public().public_bytes(
+            encoding=serialization.Encoding.DER,
+            format=serialization.PublicFormat.PKCS1)
+
+    def get_private_bytes(self, minimal):
+        self._unsupported('get_private_bytes')
+
+    def export_private(self, path, passwd=None):
+        self._unsupported('export_private')
+
+    def export_public(self, path):
+        """Write the public key to the given file."""
+        pem = self._get_public().public_bytes(
+            encoding=serialization.Encoding.PEM,
+            format=serialization.PublicFormat.SubjectPublicKeyInfo)
+        with open(path, 'wb') as f:
+            f.write(pem)
+
+    def sig_type(self):
+        return "PKCS1_PSS_RSA{}_SHA256".format(self.key_size())
+
+    def sig_tlv(self):
+        return"RSA{}".format(self.key_size())
+
+    def sig_len(self):
+        return self.key_size() / 8
+
+    def verify(self, signature, payload):
+        k = self.key
+        if isinstance(self.key, rsa.RSAPrivateKey):
+            k = self.key.public_key()
+        return k.verify(signature=signature, data=payload,
+                        padding=PSS(mgf=MGF1(SHA256()), salt_length=32),
+                        algorithm=SHA256())
+
+
+class RSA(RSAPublic):
+    """
+    Wrapper around an RSA key, with imgtool support.
+    """
+
+    def __init__(self, key):
+        """The key should be a private key from cryptography"""
+        self.key = key
+
+    @staticmethod
+    def generate(key_size=2048):
+        if key_size not in RSA_KEY_SIZES:
+            raise RSAUsageError("Key size {} is not supported by MCUboot"
+                                .format(key_size))
+        pk = rsa.generate_private_key(
+            public_exponent=65537,
+            key_size=key_size,
+            backend=default_backend())
+        return RSA(pk)
+
+    def _get_public(self):
+        return self.key.public_key()
+
+    def _build_minimal_rsa_privkey(self, der):
+        '''
+        Builds a new DER that only includes N/E/D/P/Q RSA parameters;
+        standard DER private bytes provided by OpenSSL also includes
+        CRT params (DP/DQ/QP) which can be removed.
+        '''
+        OFFSET_N = 7  # N is always located at this offset
+        b = bytearray(der)
+        off = OFFSET_N
+        if b[off + 1] != 0x82:
+            raise RSAUsageError("Error parsing N while minimizing")
+        len_N = (b[off + 2] << 8) + b[off + 3] + 4
+        off += len_N
+        if b[off + 1] != 0x03:
+            raise RSAUsageError("Error parsing E while minimizing")
+        len_E = b[off + 2] + 4
+        off += len_E
+        if b[off + 1] != 0x82:
+            raise RSAUsageError("Error parsing D while minimizing")
+        len_D = (b[off + 2] << 8) + b[off + 3] + 4
+        off += len_D
+        if b[off + 1] != 0x81:
+            raise RSAUsageError("Error parsing P while minimizing")
+        len_P = b[off + 2] + 3
+        off += len_P
+        if b[off + 1] != 0x81:
+            raise RSAUsageError("Error parsing Q while minimizing")
+        len_Q = b[off + 2] + 3
+        off += len_Q
+        # adjust DER size for removed elements
+        b[2] = (off - 4) >> 8
+        b[3] = (off - 4) & 0xff
+        return b[:off]
+
+    def get_private_bytes(self, minimal):
+        priv = self.key.private_bytes(
+            encoding=serialization.Encoding.DER,
+            format=serialization.PrivateFormat.TraditionalOpenSSL,
+            encryption_algorithm=serialization.NoEncryption())
+        if minimal:
+            priv = self._build_minimal_rsa_privkey(priv)
+        return priv
+
+    def export_private(self, path, passwd=None):
+        """Write the private key to the given file, protecting it with the
+        optional password."""
+        if passwd is None:
+            enc = serialization.NoEncryption()
+        else:
+            enc = serialization.BestAvailableEncryption(passwd)
+        pem = self.key.private_bytes(
+            encoding=serialization.Encoding.PEM,
+            format=serialization.PrivateFormat.PKCS8,
+            encryption_algorithm=enc)
+        with open(path, 'wb') as f:
+            f.write(pem)
+
+    def sign(self, payload):
+        # The verification code only allows the salt length to be the
+        # same as the hash length, 32.
+        return self.key.sign(
+            data=payload,
+            padding=PSS(mgf=MGF1(SHA256()), salt_length=32),
+            algorithm=SHA256())
--- a/tools/mcuboot/imgtool/keys/rsa_test.py
+++ b/tools/mcuboot/imgtool/keys/rsa_test.py
@ -0,0 +1,115 @@
+"""
+Tests for RSA keys
+"""
+
+import io
+import os
+import sys
+import tempfile
+import unittest
+
+from cryptography.exceptions import InvalidSignature
+from cryptography.hazmat.primitives.asymmetric.padding import PSS, MGF1
+from cryptography.hazmat.primitives.hashes import SHA256
+
+# Setup sys path so 'imgtool' is in it.
+sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__),
+                                                '../..')))
+
+from imgtool.keys import load, RSA, RSAUsageError
+from imgtool.keys.rsa import RSA_KEY_SIZES
+
+
+class KeyGeneration(unittest.TestCase):
+
+    def setUp(self):
+        self.test_dir = tempfile.TemporaryDirectory()
+
+    def tname(self, base):
+        return os.path.join(self.test_dir.name, base)
+
+    def tearDown(self):
+        self.test_dir.cleanup()
+
+    def test_keygen(self):
+        # Try generating a RSA key with non-supported size
+        with self.assertRaises(RSAUsageError):
+            RSA.generate(key_size=1024)
+
+        for key_size in RSA_KEY_SIZES:
+            name1 = self.tname("keygen.pem")
+            k = RSA.generate(key_size=key_size)
+            k.export_private(name1, b'secret')
+
+            # Try loading the key without a password.
+            self.assertIsNone(load(name1))
+
+            k2 = load(name1, b'secret')
+
+            pubname = self.tname('keygen-pub.pem')
+            k2.export_public(pubname)
+            pk2 = load(pubname)
+
+            # We should be able to export the public key from the loaded
+            # public key, but not the private key.
+            pk2.export_public(self.tname('keygen-pub2.pem'))
+            self.assertRaises(RSAUsageError, pk2.export_private,
+                              self.tname('keygen-priv2.pem'))
+
+    def test_emit(self):
+        """Basic sanity check on the code emitters."""
+        for key_size in RSA_KEY_SIZES:
+            k = RSA.generate(key_size=key_size)
+
+            ccode = io.StringIO()
+            k.emit_c_public(ccode)
+            self.assertIn("rsa_pub_key", ccode.getvalue())
+            self.assertIn("rsa_pub_key_len", ccode.getvalue())
+
+            rustcode = io.StringIO()
+            k.emit_rust_public(rustcode)
+            self.assertIn("RSA_PUB_KEY", rustcode.getvalue())
+
+    def test_emit_pub(self):
+        """Basic sanity check on the code emitters, from public key."""
+        pubname = self.tname("public.pem")
+        for key_size in RSA_KEY_SIZES:
+            k = RSA.generate(key_size=key_size)
+            k.export_public(pubname)
+
+            k2 = load(pubname)
+
+            ccode = io.StringIO()
+            k2.emit_c_public(ccode)
+            self.assertIn("rsa_pub_key", ccode.getvalue())
+            self.assertIn("rsa_pub_key_len", ccode.getvalue())
+
+            rustcode = io.StringIO()
+            k2.emit_rust_public(rustcode)
+            self.assertIn("RSA_PUB_KEY", rustcode.getvalue())
+
+    def test_sig(self):
+        for key_size in RSA_KEY_SIZES:
+            k = RSA.generate(key_size=key_size)
+            buf = b'This is the message'
+            sig = k.sign(buf)
+
+            # The code doesn't have any verification, so verify this
+            # manually.
+            k.key.public_key().verify(
+                signature=sig,
+                data=buf,
+                padding=PSS(mgf=MGF1(SHA256()), salt_length=32),
+                algorithm=SHA256())
+
+            # Modify the message to make sure the signature fails.
+            self.assertRaises(InvalidSignature,
+                              k.key.public_key().verify,
+                              signature=sig,
+                              data=b'This is thE message',
+                              padding=PSS(mgf=MGF1(SHA256()), salt_length=32),
+                              algorithm=SHA256())
+
+
+if __name__ == '__main__':
+    unittest.main()
--- a/tools/mcuboot/imgtool/keys/x25519.py
+++ b/tools/mcuboot/imgtool/keys/x25519.py
@ -0,0 +1,107 @@
+"""
+X25519 key management
+"""
+
+from cryptography.hazmat.backends import default_backend
+from cryptography.hazmat.primitives import serialization
+from cryptography.hazmat.primitives.asymmetric import x25519
+
+from .general import KeyClass
+
+
+class X25519UsageError(Exception):
+    pass
+
+
+class X25519Public(KeyClass):
+    def __init__(self, key):
+        self.key = key
+
+    def shortname(self):
+        return "x25519"
+
+    def _unsupported(self, name):
+        raise X25519UsageError("Operation {} requires private key".format(name))
+
+    def _get_public(self):
+        return self.key
+
+    def get_public_bytes(self):
+        # The key is embedded into MBUboot in "SubjectPublicKeyInfo" format
+        return self._get_public().public_bytes(
+            encoding=serialization.Encoding.DER,
+            format=serialization.PublicFormat.SubjectPublicKeyInfo)
+
+    def get_private_bytes(self, minimal):
+        self._unsupported('get_private_bytes')
+
+    def export_private(self, path, passwd=None):
+        self._unsupported('export_private')
+
+    def export_public(self, path):
+        """Write the public key to the given file."""
+        pem = self._get_public().public_bytes(
+            encoding=serialization.Encoding.PEM,
+            format=serialization.PublicFormat.SubjectPublicKeyInfo)
+        with open(path, 'wb') as f:
+            f.write(pem)
+
+    def sig_type(self):
+        return "X25519"
+
+    def sig_tlv(self):
+        return "X25519"
+
+    def sig_len(self):
+        return 32
+
+
+class X25519(X25519Public):
+    """
+    Wrapper around an X25519 private key.
+    """
+
+    def __init__(self, key):
+        """key should be an instance of EllipticCurvePrivateKey"""
+        self.key = key
+
+    @staticmethod
+    def generate():
+        pk = x25519.X25519PrivateKey.generate()
+        return X25519(pk)
+
+    def _get_public(self):
+        return self.key.public_key()
+
+    def get_private_bytes(self, minimal):
+        return self.key.private_bytes(
+            encoding=serialization.Encoding.DER,
+            format=serialization.PrivateFormat.PKCS8,
+            encryption_algorithm=serialization.NoEncryption())
+
+    def export_private(self, path, passwd=None):
+        """
+        Write the private key to the given file, protecting it with the
+        optional password.
+        """
+        if passwd is None:
+            enc = serialization.NoEncryption()
+        else:
+            enc = serialization.BestAvailableEncryption(passwd)
+        pem = self.key.private_bytes(
+            encoding=serialization.Encoding.PEM,
+            format=serialization.PrivateFormat.PKCS8,
+            encryption_algorithm=enc)
+        with open(path, 'wb') as f:
+            f.write(pem)
+
+    def sign_digest(self, digest):
+        """Return the actual signature"""
+        return self.key.sign(data=digest)
+
+    def verify_digest(self, signature, digest):
+        """Verify that signature is valid for given digest"""
+        k = self.key
+        if isinstance(self.key, x25519.X25519PrivateKey):
+            k = self.key.public_key()
+        return k.verify(signature=signature, data=digest)
--- a/tools/mcuboot/imgtool/main.py
+++ b/tools/mcuboot/imgtool/main.py
@ -0,0 +1,352 @@
+#! /usr/bin/env python3
+#
+# Copyright 2017-2020 Linaro Limited
+# Copyright 2019-2020 Arm Limited
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import re
+import click
+import getpass
+import imgtool.keys as keys
+import sys
+from imgtool import image, imgtool_version
+from imgtool.version import decode_version
+from .keys import (
+    RSAUsageError, ECDSAUsageError, Ed25519UsageError, X25519UsageError)
+
+MIN_PYTHON_VERSION = (3, 6)
+if sys.version_info < MIN_PYTHON_VERSION:
+    sys.exit("Python %s.%s or newer is required by imgtool."
+             % MIN_PYTHON_VERSION)
+
+
+def gen_rsa2048(keyfile, passwd):
+    keys.RSA.generate().export_private(path=keyfile, passwd=passwd)
+
+
+def gen_rsa3072(keyfile, passwd):
+    keys.RSA.generate(key_size=3072).export_private(path=keyfile,
+                                                    passwd=passwd)
+
+
+def gen_ecdsa_p256(keyfile, passwd):
+    keys.ECDSA256P1.generate().export_private(keyfile, passwd=passwd)
+
+
+def gen_ecdsa_p224(keyfile, passwd):
+    print("TODO: p-224 not yet implemented")
+
+
+def gen_ed25519(keyfile, passwd):
+    keys.Ed25519.generate().export_private(path=keyfile, passwd=passwd)
+
+
+def gen_x25519(keyfile, passwd):
+    keys.X25519.generate().export_private(path=keyfile, passwd=passwd)
+
+
+valid_langs = ['c', 'rust']
+keygens = {
+    'rsa-2048':   gen_rsa2048,
+    'rsa-3072':   gen_rsa3072,
+    'ecdsa-p256': gen_ecdsa_p256,
+    'ecdsa-p224': gen_ecdsa_p224,
+    'ed25519':    gen_ed25519,
+    'x25519':     gen_x25519,
+}
+
+
+def load_key(keyfile):
+    # TODO: better handling of invalid pass-phrase
+    key = keys.load(keyfile)
+    if key is not None:
+        return key
+    passwd = getpass.getpass("Enter key passphrase: ").encode('utf-8')
+    return keys.load(keyfile, passwd)
+
+
+def get_password():
+    while True:
+        passwd = getpass.getpass("Enter key passphrase: ")
+        passwd2 = getpass.getpass("Reenter passphrase: ")
+        if passwd == passwd2:
+            break
+        print("Passwords do not match, try again")
+
+    # Password must be bytes, always use UTF-8 for consistent
+    # encoding.
+    return passwd.encode('utf-8')
+
+
+@click.option('-p', '--password', is_flag=True,
+              help='Prompt for password to protect key')
+@click.option('-t', '--type', metavar='type', required=True,
+              type=click.Choice(keygens.keys()), prompt=True,
+              help='{}'.format('One of: {}'.format(', '.join(keygens.keys()))))
+@click.option('-k', '--key', metavar='filename', required=True)
+@click.command(help='Generate pub/private keypair')
+def keygen(type, key, password):
+    password = get_password() if password else None
+    keygens[type](key, password)
+
+
+@click.option('-l', '--lang', metavar='lang', default=valid_langs[0],
+              type=click.Choice(valid_langs))
+@click.option('-k', '--key', metavar='filename', required=True)
+@click.command(help='Dump public key from keypair')
+def getpub(key, lang):
+    key = load_key(key)
+    if key is None:
+        print("Invalid passphrase")
+    elif lang == 'c':
+        key.emit_c_public()
+    elif lang == 'rust':
+        key.emit_rust_public()
+    else:
+        raise ValueError("BUG: should never get here!")
+
+
+@click.option('--minimal', default=False, is_flag=True,
+              help='Reduce the size of the dumped private key to include only '
+                   'the minimum amount of data required to decrypt. This '
+                   'might require changes to the build config. Check the docs!'
+              )
+@click.option('-k', '--key', metavar='filename', required=True)
+@click.command(help='Dump private key from keypair')
+def getpriv(key, minimal):
+    key = load_key(key)
+    if key is None:
+        print("Invalid passphrase")
+    try:
+        key.emit_private(minimal)
+    except (RSAUsageError, ECDSAUsageError, Ed25519UsageError,
+            X25519UsageError) as e:
+        raise click.UsageError(e)
+
+
+@click.argument('imgfile')
+@click.option('-k', '--key', metavar='filename')
+@click.command(help="Check that signed image can be verified by given key")
+def verify(key, imgfile):
+    key = load_key(key) if key else None
+    ret, version = image.Image.verify(imgfile, key)
+    if ret == image.VerifyResult.OK:
+        print("Image was correctly validated")
+        print("Image version: {}.{}.{}+{}".format(*version))
+        return
+    elif ret == image.VerifyResult.INVALID_MAGIC:
+        print("Invalid image magic; is this an MCUboot image?")
+    elif ret == image.VerifyResult.INVALID_TLV_INFO_MAGIC:
+        print("Invalid TLV info magic; is this an MCUboot image?")
+    elif ret == image.VerifyResult.INVALID_HASH:
+        print("Image has an invalid sha256 digest")
+    elif ret == image.VerifyResult.INVALID_SIGNATURE:
+        print("No signature found for the given key")
+    else:
+        print("Unknown return code: {}".format(ret))
+    sys.exit(1)
+
+
+def validate_version(ctx, param, value):
+    try:
+        decode_version(value)
+        return value
+    except ValueError as e:
+        raise click.BadParameter("{}".format(e))
+
+
+def validate_security_counter(ctx, param, value):
+    if value is not None:
+        if value.lower() == 'auto':
+            return 'auto'
+        else:
+            try:
+                return int(value, 0)
+            except ValueError:
+                raise click.BadParameter(
+                    "{} is not a valid integer. Please use code literals "
+                    "prefixed with 0b/0B, 0o/0O, or 0x/0X as necessary."
+                        .format(value))
+
+
+def validate_header_size(ctx, param, value):
+    min_hdr_size = image.IMAGE_HEADER_SIZE
+    if value < min_hdr_size:
+        raise click.BadParameter(
+            "Minimum value for -H/--header-size is {}".format(min_hdr_size))
+    return value
+
+
+def get_dependencies(ctx, param, value):
+    if value is not None:
+        versions = []
+        images = re.findall(r"\((\d+)", value)
+        if len(images) == 0:
+            raise click.BadParameter(
+                "Image dependency format is invalid: {}".format(value))
+        raw_versions = re.findall(r",\s*([0-9.+]+)\)", value)
+        if len(images) != len(raw_versions):
+            raise click.BadParameter(
+                '''There's a mismatch between the number of dependency images
+                and versions in: {}'''.format(value))
+        for raw_version in raw_versions:
+            try:
+                versions.append(decode_version(raw_version))
+            except ValueError as e:
+                raise click.BadParameter("{}".format(e))
+        dependencies = dict()
+        dependencies[image.DEP_IMAGES_KEY] = images
+        dependencies[image.DEP_VERSIONS_KEY] = versions
+        return dependencies
+
+
+class BasedIntParamType(click.ParamType):
+    name = 'integer'
+
+    def convert(self, value, param, ctx):
+        try:
+            return int(value, 0)
+        except ValueError:
+            self.fail('%s is not a valid integer. Please use code literals '
+                      'prefixed with 0b/0B, 0o/0O, or 0x/0X as necessary.'
+                      % value, param, ctx)
+
+
+@click.argument('outfile')
+@click.argument('infile')
+@click.option('-R', '--erased-val', type=click.Choice(['0', '0xff']),
+              required=False,
+              help='The value that is read back from erased flash.')
+@click.option('-x', '--hex-addr', type=BasedIntParamType(), required=False,
+              help='Adjust address in hex output file.')
+@click.option('-L', '--load-addr', type=BasedIntParamType(), required=False,
+              help='Load address for image when it should run from RAM.')
+@click.option('--save-enctlv', default=False, is_flag=True,
+              help='When upgrading, save encrypted key TLVs instead of plain '
+                   'keys. Enable when BOOT_SWAP_SAVE_ENCTLV config option '
+                   'was set.')
+@click.option('-E', '--encrypt', metavar='filename',
+              help='Encrypt image using the provided public key')
+@click.option('-e', '--endian', type=click.Choice(['little', 'big']),
+              default='little', help="Select little or big endian")
+@click.option('--overwrite-only', default=False, is_flag=True,
+              help='Use overwrite-only instead of swap upgrades')
+@click.option('--boot-record', metavar='sw_type', help='Create CBOR encoded '
+                                                       'boot record TLV. The sw_type represents the role of the '
+                                                       'software component (e.g. CoFM for coprocessor firmware). '
+                                                       '[max. 12 characters]')
+@click.option('-M', '--max-sectors', type=int,
+              help='When padding allow for this amount of sectors (defaults '
+                   'to 128)')
+@click.option('--confirm', default=False, is_flag=True,
+              help='When padding the image, mark it as confirmed')
+@click.option('--pad', default=False, is_flag=True,
+              help='Pad image to --slot-size bytes, adding trailer magic')
+@click.option('-S', '--slot-size', type=BasedIntParamType(), required=True,
+              help='Size of the slot where the image will be written')
+@click.option('--pad-header', default=False, is_flag=True,
+              help='Add --header-size zeroed bytes at the beginning of the '
+                   'image')
+@click.option('-H', '--header-size', callback=validate_header_size,
+              type=BasedIntParamType(), required=True)
+@click.option('--pad-sig', default=False, is_flag=True,
+              help='Add 0-2 bytes of padding to ECDSA signature '
+                   '(for mcuboot <1.5)')
+@click.option('-d', '--dependencies', callback=get_dependencies,
+              required=False, help='''Add dependence on another image, format:
+              "(<image_ID>,<image_version>), ... "''')
+@click.option('-s', '--security-counter', callback=validate_security_counter,
+              help='Specify the value of security counter. Use the `auto` '
+                   'keyword to automatically generate it from the image version.')
+@click.option('-v', '--version', callback=validate_version,  required=True)
+@click.option('--align', type=click.Choice(['1', '2', '4', '8']),
+              required=True)
+@click.option('--public-key-format', type=click.Choice(['hash', 'full']),
+              default='hash', help='In what format to add the public key to '
+                                   'the image manifest: full key or hash of the key.')
+@click.option('-k', '--key', metavar='filename')
+@click.command(help='''Create a signed or unsigned image\n
+               INFILE and OUTFILE are parsed as Intel HEX if the params have
+               .hex extension, otherwise binary format is used''')
+def sign(key, public_key_format, align, version, pad_sig, header_size,
+         pad_header, slot_size, pad, confirm, max_sectors, overwrite_only,
+         endian, encrypt, infile, outfile, dependencies, load_addr, hex_addr,
+         erased_val, save_enctlv, security_counter, boot_record):
+    img = image.Image(version=decode_version(version), header_size=header_size,
+                      pad_header=pad_header, pad=pad, confirm=confirm,
+                      align=int(align), slot_size=slot_size,
+                      max_sectors=max_sectors, overwrite_only=overwrite_only,
+                      endian=endian, load_addr=load_addr, erased_val=erased_val,
+                      save_enctlv=save_enctlv,
+                      security_counter=security_counter)
+    img.load(infile)
+    key = load_key(key) if key else None
+    enckey = load_key(encrypt) if encrypt else None
+    if enckey and key:
+        if ((isinstance(key, keys.ECDSA256P1) and
+             not isinstance(enckey, keys.ECDSA256P1Public))
+                or (isinstance(key, keys.RSA) and
+                    not isinstance(enckey, keys.RSAPublic))):
+            # FIXME
+            raise click.UsageError("Signing and encryption must use the same "
+                                   "type of key")
+
+    if pad_sig and hasattr(key, 'pad_sig'):
+        key.pad_sig = True
+
+    img.create(key, public_key_format, enckey, dependencies, boot_record)
+    img.save(outfile, hex_addr)
+
+
+class AliasesGroup(click.Group):
+
+    _aliases = {
+        "create": "sign",
+    }
+
+    def list_commands(self, ctx):
+        cmds = [k for k in self.commands]
+        aliases = [k for k in self._aliases]
+        return sorted(cmds + aliases)
+
+    def get_command(self, ctx, cmd_name):
+        rv = click.Group.get_command(self, ctx, cmd_name)
+        if rv is not None:
+            return rv
+        if cmd_name in self._aliases:
+            return click.Group.get_command(self, ctx, self._aliases[cmd_name])
+        return None
+
+
+@click.command(help='Print imgtool version information')
+def version():
+    print(imgtool_version)
+
+
+@click.command(cls=AliasesGroup,
+               context_settings=dict(help_option_names=['-h', '--help']))
+def imgtool():
+    pass
+
+
+imgtool.add_command(keygen)
+imgtool.add_command(getpub)
+imgtool.add_command(getpriv)
+imgtool.add_command(verify)
+imgtool.add_command(sign)
+imgtool.add_command(version)
+
+
+if __name__ == '__main__':
+    imgtool()
--- a/tools/mcuboot/imgtool/version.py
+++ b/tools/mcuboot/imgtool/version.py
@ -0,0 +1,53 @@
+# Copyright 2017 Linaro Limited
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""
+Semi Semantic Versioning
+
+Implements a subset of semantic versioning that is supportable by the image
+header.
+"""
+
+from collections import namedtuple
+import re
+
+SemiSemVersion = namedtuple('SemiSemVersion', ['major', 'minor', 'revision',
+                                               'build'])
+
+version_re = re.compile(
+    r"""^([1-9]\d*|0)(\.([1-9]\d*|0)(\.([1-9]\d*|0)(\+([1-9]\d*|0))?)?)?$""")
+
+
+def decode_version(text):
+    """Decode the version string, which should be of the form maj.min.rev+build
+    """
+    m = version_re.match(text)
+    if m:
+        result = SemiSemVersion(
+            int(m.group(1)) if m.group(1) else 0,
+            int(m.group(3)) if m.group(3) else 0,
+            int(m.group(5)) if m.group(5) else 0,
+            int(m.group(7)) if m.group(7) else 0)
+        return result
+    else:
+        msg = "Invalid version number, should be maj.min.rev+build with later "
+        msg += "parts optional"
+        raise ValueError(msg)
+
+
+if __name__ == '__main__':
+    print(decode_version("1.2"))
+    print(decode_version("1.0"))
+    print(decode_version("0.0.2+75"))
+    print(decode_version("0.0.0+00"))
--- a/tools/mcuboot/jgdb.sh
+++ b/tools/mcuboot/jgdb.sh
@ -0,0 +1,6 @@
+#! /bin/bash
+
+source $(dirname $0)/../target.sh
+
+# Start the jlink gdb server
+JLinkGDBServer -if swd -device $SOC -speed auto
--- a/tools/mcuboot/jl.sh
+++ b/tools/mcuboot/jl.sh
@ -0,0 +1,5 @@
+#!/bin/bash
+
+source $(dirname $0)/../target.sh
+
+JLinkExe -speed auto -si SWD -device $SOC
--- a/tools/mcuboot/mcubin.bt
+++ b/tools/mcuboot/mcubin.bt
@ -0,0 +1,135 @@
+// Copyright (C) 2019, Linaro Ltd
+//
+// SPDX-License-Identifier: Apache-2.0
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may
+// not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// This file is a Binary Template file for the 010 Editor
+// (http://www.sweetscape.com/010editor/) to allow it to show the
+// structure of an MCUboot image.
+
+LittleEndian();
+
+struct ENTRY {
+    uint32 id;
+    uint32 offset;
+    uint32 size;
+    uint32 pad;
+};
+
+// The simulator writes the partition table at the beginning of the
+// image, so that we can tell where the partitions are.  If you are
+// trying to view an image captured from a device, you can either
+// construct a synthetic partition table in the file, or change code
+// described below to hardcode one.
+struct PTABLE {
+    uchar pheader[8];
+    if (ptable.pheader != "mcuboot\0") {
+        // NOTE: Put code here to hard code a partition table, and
+        // continue.
+        Warning("Invalid magic on ptable header");
+        return -1;
+    } else {
+        uint32 count;
+        struct ENTRY entries[count];
+    }
+};
+
+struct PTABLE ptable;
+
+struct IMAGE_VERSION {
+    uchar major;
+    uchar minor;
+    uint16 revision;
+    uint32 build_num;
+};
+
+struct IHDR {
+    uint32 magic <format=hex>;
+    uint32 load_addr <format=hex>;
+    uint16 hdr_size <format=hex>;
+    uint16 protect_size <format=hex>;
+    uint32 img_size <format=hex>;
+    uint32 flags;
+    struct IMAGE_VERSION ver;
+    uint32 _pad1;
+};
+
+struct TLV_HDR {
+    uint16 magic;
+    uint16 tlv_tot;
+};
+
+struct TLV {
+    uchar type <format=hex>;
+    uchar pad;
+    uint16 len;
+
+    switch (type) {
+    case 0x01: // keyhash
+        uchar keyhash[len];
+        break;
+    case 0x40: // dependency
+        if (len != 12) {
+            Warning("Invalid dependency size");
+            return -1;
+        }
+        uchar image_id;
+        uchar pad1;
+        uint16 pad2;
+        struct IMAGE_VERSION version;
+        break;
+    default:
+        // Other, just consume the data.
+        uchar data[len];
+    }
+};
+
+local int i;
+local int epos;
+
+for (i = 0; i < ptable.count; i++) {
+    FSeek(ptable.entries[i].offset);
+    switch (ptable.entries[i].id) {
+    case 1:
+    case 2:
+    case 4:
+    case 5:
+        struct IMAGE {
+            struct IHDR ihdr;
+
+            if (ihdr.magic == 0x96f3b83d) {
+                uchar payload[ihdr.img_size];
+
+                epos = FTell();
+                struct TLV_HDR tlv_hdr;
+
+                if (tlv_hdr.magic == 0x6907) {
+                    epos += tlv_hdr.tlv_tot;
+                    while (FTell() < epos) {
+                        struct TLV tlv;
+                    }
+                }
+            }
+            // uchar block[ptable.entries[i].size];
+        } image;
+        break;
+    case 3:
+        struct SCRATCH {
+            uchar data[ptable.entries[i].size];
+        } scratch;
+        break;
+    default:
+        break;
+    }
+}
--- a/tools/mcuboot/requirements.txt
+++ b/tools/mcuboot/requirements.txt
@ -0,0 +1,4 @@
+cryptography>=2.6
+intelhex
+click
+cbor>=1.0.0
--- a/tools/mcuboot/setup.py
+++ b/tools/mcuboot/setup.py
@ -0,0 +1,29 @@
+import setuptools
+from imgtool import imgtool_version
+
+setuptools.setup(
+    name="imgtool",
+    version=imgtool_version,
+    author="The MCUboot committers",
+    author_email="dev-mcuboot@lists.runtime.co",
+    description=("MCUboot's image signing and key management"),
+    license="Apache Software License",
+    url="http://github.com/JuulLabs-OSS/mcuboot",
+    packages=setuptools.find_packages(),
+    python_requires='>=3.6',
+    install_requires=[
+        'cryptography>=2.4.2',
+        'intelhex>=2.2.1',
+        'click',
+        'cbor>=1.0.0',
+    ],
+    entry_points={
+        "console_scripts": ["imgtool=imgtool.main:imgtool"]
+    },
+    classifiers=[
+        "Programming Language :: Python :: 3",
+        "Development Status :: 4 - Beta",
+        "Topic :: Software Development :: Build Tools",
+        "License :: OSI Approved :: Apache Software License",
+    ],
+)
--- a/tools/rle_encode.py
+++ b/tools/rle_encode.py
@ -0,0 +1,379 @@
+#!/usr/bin/env python3
+
+# SPDX-License-Identifier: LGPL-3.0-or-later
+# Copyright (C) 2020 Daniel Thompson
+
+import argparse
+import sys
+import os.path
+from PIL import Image
+
+def clut8_rgb888(i):
+    """Reference CLUT for wasp-os.
+
+    Technically speaking this is not a CLUT because the we lookup the colours
+    algorithmically to avoid the cost of a genuine CLUT. The palette is
+    designed to be fairly easy to generate algorithmically.
+
+    The palette includes all 216 web-safe colours together 4 grays and
+    36 additional colours that target "gaps" at the brighter end of the web
+    safe set. There are 11 greys (plus black and white) although two are
+    fairly close together.
+
+    :param int i: Index (from 0..255 inclusive) into the CLUT
+    :return:      24-bit colour in RGB888 format
+    """
+    if i < 216:
+        rgb888  = ( i  % 6) * 0x33
+        rg = i // 6
+        rgb888 += (rg  % 6) * 0x3300
+        rgb888 += (rg // 6) * 0x330000
+    elif i < 252:
+        i -= 216
+        rgb888  =     0x7f + (( i  % 3) * 0x33)
+        rg = i // 3
+        rgb888 +=   0x4c00 + ((rg  % 4) * 0x3300)
+        rgb888 += 0x7f0000 + ((rg // 4) * 0x330000)
+    else:
+        i -= 252
+        rgb888 = 0x2c2c2c + (0x101010 * i)
+
+    return rgb888
+
+def clut8_rgb565(i):
+    """RBG565 CLUT for wasp-os.
+
+    This CLUT implements the same palette as :py:meth:`clut8_888` but
+    outputs RGB565 pixels.
+
+    .. note::
+
+        This function is unused within this file but needs to be
+        maintained alongside the reference clut so it is reproduced
+        here.
+
+    :param int i: Index (from 0..255 inclusive) into the CLUT
+    :return:      16-bit colour in RGB565 format
+    """
+    if i < 216:
+        rgb565  = (( i  % 6) * 0x33) >> 3
+        rg = i // 6
+        rgb565 += ((rg  % 6) * (0x33 << 3)) & 0x07e0
+        rgb565 += ((rg // 6) * (0x33 << 8)) & 0xf800
+    elif i < 252:
+        i -= 216
+        rgb565  = (0x7f + (( i  % 3) * 0x33)) >> 3
+        rg = i // 3
+        rgb565 += ((0x4c << 3) + ((rg  % 4) * (0x33 << 3))) & 0x07e0
+        rgb565 += ((0x7f << 8) + ((rg // 4) * (0x33 << 8))) & 0xf800
+    else:
+        i -= 252
+        gr6 = (0x2c + (0x10 * i)) >> 2
+        gr5 = gr6 >> 1
+        rgb565 = (gr5 << 11) + (gr6 << 5) + gr5
+
+    return rgb565
+
+class ReverseCLUT:
+    def __init__(self, clut):
+        l = []
+        for i in range(256):
+            l.append(clut(i))
+        self.clut = tuple(l)
+        self.lookup = {}
+
+    def __call__(self, rgb888):
+        """Compare rgb888 to every element of the CLUT and pick the
+        closest match.
+        """
+        if rgb888 in self.lookup:
+            return self.lookup[rgb888]
+
+        best = 200000
+        index = -1
+        clut = self.clut
+        r = rgb888 >> 16
+        g = (rgb888 >> 8) & 0xff
+        b = rgb888 & 0xff
+
+        for i in range(256):
+            candidate = clut[i]
+            rd = r - (candidate >> 16)
+            gd = g - ((candidate >> 8) & 0xff)
+            bd = b - (candidate & 0xff)
+            # This is the Euclidian distance (squared)
+            distance = rd * rd + gd * gd + bd * bd
+            if distance < best:
+                best = distance
+                index = i
+
+        self.lookup[rgb888] = index
+        #print(f'# #{rgb888:06x} -> #{clut8_rgb888(index):06x}')
+        return index
+
+def varname(p):
+    return os.path.basename(os.path.splitext(p)[0])
+
+def encode(im):
+    pixels = im.load()
+
+    rle = []
+    rl = 0
+    px = pixels[0, 0]
+
+    def encode_pixel(px, rl):
+        while rl > 255:
+            rle.append(255)
+            rle.append(0)
+            rl -= 255
+        rle.append(rl)
+
+    for y in range(im.height):
+        for x in range(im.width):
+            newpx = pixels[x, y]
+            if newpx == px:
+                rl += 1
+                assert(rl < (1 << 21))
+                continue
+
+            # Code the previous run
+            encode_pixel(px, rl)
+
+            # Start a new run
+            rl = 1
+            px = newpx
+
+    # Handle the final run
+    encode_pixel(px, rl)
+
+    return (im.width, im.height, bytes(rle))
+
+def encode_2bit(im):
+    """2-bit palette based RLE encoder.
+
+    This encoder has a reprogrammable 2-bit palette. This allows it to encode
+    arbitrary images with a full 8-bit depth but the 2-byte overhead each time
+    a new colour is introduced means it is not efficient unless the image is
+    carefully constructed to keep a good locality of reference for the three
+    non-background colours.
+
+    The encoding competes well with the 1-bit encoder for small monochrome
+    images but once run-lengths longer than 62 start to become frequent then
+    this encoding is about 30% larger than a 1-bit encoding.
+    """
+    pixels = im.load()
+    assert(im.width <= 255)
+    assert(im.height <= 255)
+
+    full_palette = ReverseCLUT(clut8_rgb888)
+
+    rle = []
+    rl = 0
+    px = pixels[0, 0]
+    # black, grey25, grey50, white
+    palette = [0, 254, 219, 215]
+    next_color = 1
+
+    def encode_pixel(px, rl):
+        nonlocal next_color
+        px = full_palette((px[0] << 16) + (px[1] << 8) + px[2])
+        if px not in palette:
+            rle.append(next_color << 6)
+            rle.append(px)
+            palette[next_color] = px
+            next_color += 1
+            if next_color >= len(palette):
+                next_color = 1
+        px = palette.index(px)
+        if rl >= 63:
+            rle.append((px << 6) + 63)
+            rl -= 63
+            while rl >= 255:
+                rle.append(255)
+                rl -= 255
+            rle.append(rl)
+        else:
+            rle.append((px << 6) + rl)
+
+    # Issue the descriptor
+    rle.append(2)
+    rle.append(im.width)
+    rle.append(im.height)
+
+    for y in range(im.height):
+        for x in range(im.width):
+            newpx = pixels[x, y]
+            if newpx == px:
+                rl += 1
+                assert(rl < (1 << 21))
+                continue
+
+            # Code the previous run
+            encode_pixel(px, rl)
+
+            # Start a new run
+            rl = 1
+            px = newpx
+
+    # Handle the final run
+    encode_pixel(px, rl)
+
+    return bytes(rle)
+
+def encode_8bit(im):
+    """Experimental 8-bit RLE encoder.
+
+    For monochrome images this is about 3x less efficient than the 1-bit
+    encoder. This encoder is not currently used anywhere in wasp-os and
+    currently there is no decoder either (so don't assume this code
+    actually works).
+    """
+    pixels = im.load()
+
+    rle = []
+    rl = 0
+    px = pixels[0, 0]
+
+    def encode_pixel(px, rl):
+        px = (px[0] & 0xe0) | ((px[1] & 0xe0) >> 3) | ((px[2] & 0xc0) >> 6)
+
+        rle.append(px)
+        if rl > 0:
+            rle.append(px)
+        rl -= 2
+        if rl > (1 << 14):
+            rle.append(0x80 | ((rl >> 14) & 0x7f))
+        if rl > (1 <<  7):
+            rle.append(0x80 | ((rl >>  7) & 0x7f))
+        if rl >= 0:
+            rle.append(         rl        & 0x7f )
+
+    for y in range(im.height):
+        for x in range(im.width):
+            newpx = pixels[x, y]
+            if newpx == px:
+                rl += 1
+                assert(rl < (1 << 21))
+                continue
+
+            # Code the previous run
+            encode_pixel(px, rl)
+
+            # Start a new run
+            rl = 1
+            px = newpx
+
+    # Handle the final run
+    encode_pixel(px, rl)
+
+    return (im.width, im.height, bytes(rle))
+
+def render_c(image, fname, indent, depth):
+    extra_indent = ' ' * indent
+    if len(image) == 3:
+        print(f'{extra_indent}// {depth}-bit RLE, generated from {fname}, '
+              f'{len(image[2])} bytes')
+        (x, y, pixels) = image
+    else:
+        print(f'{extra_indent}// {depth}-bit RLE, generated from {fname}, '
+              f'{len(image)} bytes')
+        pixels = image
+
+    print(f'{extra_indent}static const uint8_t {varname(fname)}[] = {{')
+    print(f'{extra_indent} ', end='')
+    i = 0
+    for rl in pixels:
+        print(f' {hex(rl)},', end='')
+
+        i += 1
+        if i == 12:
+            print(f'\n{extra_indent} ', end='')
+            i = 0
+    print('\n};')
+
+def render_py(image, fname, indent, depth):
+    extra_indent = ' ' * indent
+    if len(image) == 3:
+        print(f'{extra_indent}# {depth}-bit RLE, generated from {fname}, '
+              f'{len(image[2])} bytes')
+        (x, y, pixels) = image
+        print(f'{extra_indent}{varname(fname)} = (')
+        print(f'{extra_indent}    {x}, {y},')
+    else:
+        print(f'{extra_indent}# {depth}-bit RLE, generated from {fname}, '
+              f'{len(image)} bytes')
+        pixels = image[3:]
+        print(f'{extra_indent}{varname(fname)} = (')
+        print(f'{extra_indent}    {image[0:1]}')
+        print(f'{extra_indent}    {image[1:3]}')
+
+    # Split the bytestring to ensure each line is short enough to
+    # be absorbed on the target if needed.
+    for i in range(0, len(pixels), 16):
+        print(f'{extra_indent}    {pixels[i:i+16]}')
+    print(f'{extra_indent})')
+
+
+def decode_to_ascii(image):
+    (sx, sy, rle) = image
+    data = bytearray(2*sx)
+    dp = 0
+    black = ord('#')
+    white = ord(' ')
+    color = black
+
+    for rl in rle:
+        while rl:
+            data[dp] = color
+            data[dp+1] = color
+            dp += 2
+            rl -= 1
+
+            if dp >= (2*sx):
+                print(data.decode('utf-8'))
+                dp = 0
+
+        if color == black:
+            color = white
+        else:
+            color = black
+
+    # Check the image is the correct length
+    assert(dp == 0)
+
+parser = argparse.ArgumentParser(description='RLE encoder tool.')
+parser.add_argument('files', nargs='+',
+                    help='files to be encoded')
+parser.add_argument('--ascii', action='store_true',
+                    help='Run the resulting image(s) through an ascii art decoder')
+parser.add_argument('--c', action='store_true',
+                    help='Render the output as C instead of python')
+parser.add_argument('--indent', default=0, type=int,
+                    help='Add extra indentation in the generated code')
+parser.add_argument('--2bit', action='store_true', dest='twobit',
+                    help='Generate 2-bit image')
+parser.add_argument('--8bit', action='store_true', dest='eightbit',
+                    help='Generate 8-bit image')
+
+args = parser.parse_args()
+if args.eightbit:
+    encoder = encode_8bit
+    depth = 8
+elif args.twobit:
+    encoder = encode_2bit
+    depth = 2
+else:
+    encoder = encode
+    depth =1
+
+for fname in args.files:
+    image = encoder(Image.open(fname))
+
+    if args.c:
+        render_c(image, fname, args.indent, depth)
+    else:
+        render_py(image, fname, args.indent, depth)
+
+    if args.ascii:
+        print()
+        decode_to_ascii(image)
				`@ -0,0 +1 @@`
				`This whole folder comes from MCUBoot source files (commit 9015a5d404c2c688166cab81067be53c860d98f4).`