/mbed_nrf52_master_boot_record

Primary LanguageC++

mBed-OS Nrf52840 Master Boot Project

Features

  • Master boot record
    • Params using FlashWearLevelling library to manage data.
    • Params is stored to internal memory.
  • Partition startup manager
    • Verify application.
    • Upgrade application.
    • Backup application.
    • Restore application.
    • Clone application.
    • AES encrypt image stored external memory.
    • CRC32 image application internal and external memory.

Library

  • AES - C++
  • Segger RTT - Console Log using J-Link.
  • FlashWearLevelling

Production Tools

Project configure

  • mbed_app.json
{
    "target_overrides": {
        "NRF52840_DK": {
            "target.components_add": ["SPIF", "FLASHIAP"],
            "target.restrict_size": "0x14000",
            "platform.stdio-baud-rate": 115200,
            "target.console-uart": false
        }
    }
}

Memory layout

  • mem_layout.h
Internal memory layout

|-------------------|   (0x100000) DEVICE_END_ADDR
|                   |
|    Application    |
| (is main program) |   MAIN_APPLICATION_REGION_SIZE
|       (636K)      |
|                   |
+-------------------+   (0x61000)MAIN_APPLICATION_ADDR
|                   |
|    Application    |
| (is a bootloader) |   BOOTLOADER_FACTORY_REGION_SIZE
|       (300K)      |
|                   |
+-------------------+   (0x16000)BOOTLOADER_FACTORY_ADDR
|                   |   (0x15FE0)MAIN_APP_HEADER_GENERAL_LOCATION
|                   |   (0x15FC0)BOOT_APP_HEADER_GENERAL_LOCATION
|      MBR params   |
|        (8K)       |   MASTER_BOOT_PARAMS_REGION_SIZE
|                   |
+-------------------+   (0x14000)MASTER_BOOT_PARAMS_ADDR
|                   |
|        MBR        |
|       (80K)       |   MASTER_BOOT_RECORD_REGION_SIZE
|                   |
+-------------------+   (0x000000) MASTER_BOOT_RECORD_ADDR


External memory layout

|-------------------|   (0x800000) EX_MEM_END_ADDR
|                   |
|        Data       |
|       (6216K)     |   CHASING_DATA_REGION_SIZE
|                   |
+-------------------+   CHASING_DATA_ADDR
|                   |
|   Image download  |
|        (1M)       |   IMAGE_DOWNLOAD_REGION_SIZE
|                   |
+-------------------+   (0xEA000)IMAGE_DOWNLOAD_ADDR
|                   |
|    App rollback   |
| (is main program) |   MAIN_APPLICATION_ROLLBACK_REGION_SIZE
|       (636K)      |
|                   |
+-------------------+   (0x4B000)MAIN_APPLICATION_ROLLBACK_ADDR
|                   |
|    App rollback   |
| (is a bootloader) |   BOOTLOADER_ROLLBACK_REGION_SIZE
|       (300K)      |
|                   |
+-------------------+   (0x000000) BOOTLOADER_ROLLBACK_ADDR