STM32 通用 Bootloader 恢复出厂固件 注意事项
参考STM32 通用 Bootloader:
在生成页面中选中了 恢复出厂固件引脚 功能后，即开启了出厂固件恢复功能。开发者可以将制作好的 app 固件烧录至 factory 分区中，在系统启动前按下恢复出厂固件引脚（可选择一个或者两个引脚作为固件恢复触发引脚）并保持 10S，即可从 factory 分区中恢复出厂固件到 app 分区中。
由于恢复出厂设置是直接copy，所以编译的出厂固件其实和下载固件配置相同。
bootloader配置如下：
修改fal_cfg.h如下：
/*
* Copyright (c) 2006-2018, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2018-12-5 SummerGift first version
*/
#ifndef _FAL_CFG_H_
#define _FAL_CFG_H_
#include 修改link.sct如下：
; *************************************************************
; *** Scatter-Loading Description File generated by uVision ***
; *************************************************************
LR_IROM1 0x08040000 0x00080000 { ; load region size_region
ER_IROM1 0x08040000 0x00080000 { ; load address = execution address
*.o (RESET, +First)
*(InRoot$$Sections)
.ANY (+RO)
}
RW_IRAM1 0x20000000 0x00010000 { ; RW data
.ANY (+RW +ZI)
}
}
编译生成bin文件。
此时如果直接使用st-link等工具烧录至0x8060000，会出现如下错误：
[E]Get firmware header occur CRC32(calc.crc: 43e482ba != hdr.info_crc32: 080409eb) error on 'factory' partition!
因为无论是factory还是download，在向app分区拷贝的时候，都会做一次解密算法（因为factory分区和download分区是可以放在片外spi flash的，如果不加密直接拷出来下载就能用了，而app分区在stm32内部，设置了读保护是不用担心的）。
所以需要将生成的文件用打包器加密，再重新用st-link烧录。
恢复出厂设置的日志如下：
[SFUD]Find a Winbond flash chip. Size is 16777216 bytes.
[SFUD]spi flash device is initialize success.
__ ___ __ __ __ ___
|__) | __ |__) / \ / \ |
| \ | |__) \__/ \__/ |
2006 - 2019 Copyright by rt-thread team
0.9.1 build Oct 13 2019
[D/FAL] (fal_flash_init:63) Flash device | onchip_flash | addr: 0x08000000 | len: 0x00080000 | blk_size: 0x00000800 |initialized finish.
[D/FAL] (fal_flash_init:63) Flash device | nor_flash | addr: 0x00000000 | len: 0x01000000 | blk_size: 0x00001000 |initialized finish.
[I/FAL] ==================== FAL partition table ====================
[I/FAL] | name | flash_dev | offset | length |
[I/FAL] -------------------------------------------------------------
[I/FAL] | app | onchip_flash | 0x00040000 | 0x00020000 |
[I/FAL] | download | onchip_flash | 0x00020000 | 0x00020000 |
[I/FAL] | factory | onchip_flash | 0x00060000 | 0x00020000 |
[I/FAL] =============================================================
[I/FAL] RT-Thread Flash Abstraction Layer (V0.4.0) initialize success.
[I/FAL] System initialization successful.
[I]RT-Thread OTA package(V0.2.1) initialize success.
[E]Get firmware header occur CRC32(calc.crc: 7b93c5c8 != hdr.info_crc32: ffffffff) error on 'download' partition!
[E]Get OTA download partition firmware header failed!
[E]Get firmware header occur CRC32(calc.crc: 7b93c5c8 != hdr.info_crc32: ffffffff) error on 'app' partition!
[I]Begin to execute the program on app partition.
[I/FAL] Find user firmware at app partition 0x08040000 successfully.
[I/FAL] Bootloader jumps to user firmware now.
\ | /
- RT - Thread Operating System
/ | \ 4.0.0 build Oct 13 2019
2006 - 2018 Copyright by rt-thread team
[D/FAL] (fal_flash_init:61) Flash device | onchip_flash | addr: 0x08000000 | len: 0x00080000 | blk_size: 0x00000800 |initialized finish.
[I/FAL] ==================== FAL partition table ====================
[I/FAL] | name | flash_dev | offset | length |
[I/FAL] -------------------------------------------------------------
[I/FAL] | bl | onchip_flash | 0x00000000 | 0x00020000 |
[I/FAL] | download | onchip_flash | 0x00020000 | 0x00020000 |
[I/FAL] | app | onchip_flash | 0x00040000 | 0x00020000 |
[I/FAL] | factory | onchip_flash | 0x00060000 | 0x00020000 |
[I/FAL] =============================================================
[I/FAL] RT-Thread Flash Abstraction Layer (V0.4.0) initialize success.
version 2.0.0
msh >
[SFUD]Find a Winbond flash chip. Size is 16777216 bytes.
[SFUD]spi flash device is initialize success.
[D/FAL] (fal_flash_init:63) Flash device | onchip_flash | addr: 0x08000000 | len: 0x00080000 | blk_size: 0x00000800 |initialized finish.
[D/FAL] (fal_flash_init:63) Flash device | nor_flash | addr: 0x00000000 | len: 0x01000000 | blk_size: 0x00001000 |initialized finish.
[I/FAL] ==================== FAL partition table ====================
[I/FAL] | name | flash_dev | offset | length |
[I/FAL] -------------------------------------------------------------
[I/FAL] | app | onchip_flash | 0x00040000 | 0x00020000 |
[I/FAL] | download | onchip_flash | 0x00020000 | 0x00020000 |
[I/FAL] | factory | onchip_flash | 0x00060000 | 0x00020000 |
[I/FAL] =============================================================
[I/FAL] RT-Thread Flash Abstraction Layer (V0.4.0) initialize success.
[I]RT-Thread OTA package(V0.2.1) initialize success.
[I]Verify 'factory' partition(fw ver: 2.0.0, timestamp: 1570940368) success.
[E]Get firmware header occur CRC32(calc.crc: 7b93c5c8 != hdr.info_crc32: ffffffff) error on 'app' partition!
[I]OTA firmware(app) upgrade startup.
[I]The partition 'app' is erasing.
[I]The partition 'app' erase success.
[I]OTA Write: [====================================================================================================] 100%
[I]Verify 'app' partition(fw ver: 2.0.0, timestamp: 1570940368) success.
[I/FAL] Find user firmware at app partition 0x08040000 successfully.
[I/FAL] Bootloader jumps to user firmware now.
\ | /
- RT - Thread Operating System
/ | \ 4.0.0 build Oct 13 2019
2006 - 2018 Copyright by rt-thread team
[D/FAL] (fal_flash_init:61) Flash device | onchip_flash | addr: 0x08000000 | len: 0x00080000 | blk_size: 0x00000800 |initialized finish.
[I/FAL] ==================== FAL partition table ====================
[I/FAL] | name | flash_dev | offset | length |
[I/FAL] -------------------------------------------------------------
[I/FAL] | bl | onchip_flash | 0x00000000 | 0x00020000 |
[I/FAL] | download | onchip_flash | 0x00020000 | 0x00020000 |
[I/FAL] | app | onchip_flash | 0x00040000 | 0x00020000 |
[I/FAL] | factory | onchip_flash | 0x00060000 | 0x00020000 |
[I/FAL] =============================================================
[I/FAL] RT-Thread Flash Abstraction Layer (V0.4.0) initialize success.
version 1.0.0
msh >