stm32 bootloader for linux, base on hal library, easy for you to customize functions

• Boards Support

  Board	MCU	SDRAM	QSPI-Flash	LCD
  FK743M5（Fank-Tech）	STM32H743XIH6	W9825G6KH-6I	W25Q64	ST7789V - 240 x 320

• Compile options configure

  5:  set(TOOLCHAIN_PATH B:/arm-gnu-toolchain ) #! toolchain location

  44: add_definitions(-DUSE_HAL_DRIVER -DSTM32H743xx) #! H743

• Board Config

  • fcpu config：

    480MHz（BogoMIPS 240）：SYSCLK_PLL_N = 192，SYSCLK_PLL_M = 5

    550MHz（BogoMIPS 275）：SYSCLK_PLL_N = 88，SYSCLK_PLL_M = 2

  • EPB_BUF_SIZE：size of buffer for early print （default to 512B）

  • USE_SRAM_D2 USE_SRAM_D3：use SRAM in D2（288KB）and D3（64KB）

  • FDT_ADDR FDT_SIZE：the base address and size of fdt（default 64KB，a Flash Block）

  • KERNEL_ADDR：base address of kernel = FDT_ADDR + FDT_SIZE

  • UART_Baudrate：default 115200 bps

  • CONSOLE_CMD：whether use command console

  • LED_BLINK_TIME：the blink interval of LED（default 82ms）

• Shell

  add a new command

  void help_newcmd(void) { ... }
  int do_newcmd(const char *buf) { ... }
  SHELL_EXPORT_CMD(newcmd, help_newcmd, do_newcmd);

• Program

  • stboot.bin -> 0x0800_0000

  • stm32h743i-disco.dtb.bin -> 0x9000_0000

  • xipImage.bin -> 0x9001_0000

    User Name: root

    Passwd: 0

    ----------- _______________  ____  ____  ______  
       ------- / ___/_  __/ __ )/ __ \/ __ \/_  __/
          ---- \__ \ / / / __  / / / / / / / / /   
       ------ ___/ // / / /_/ / /_/ / /_/ / / /      
    -------- /____//_/ /_____/\____/\____/ /_/     
    
    [    0.000003] sysclk: system clock configured, CPU 480MHz
    [    0.000085] tcm: vectors -> dtcm 0x20000000, .itcm -> itcm 0x00001000
    [    0.000157] mpu: mem 0x24000000 setup, size 512KB
    [    0.000219] mpu: mem 0xc0000000 setup, size 32MB
    [    0.000281] mpu: mem 0x08000000 setup, size 2MB
    [    0.000341] mpu: mem 0x90000000 setup, size 8MB
    [    0.052661] tty: uart1 init success
    [    0.056168] led: gpioc-13 as triggered led
    [    0.060292] flash: w25q64 flash ( ID:EF4017 ) init success
    [    0.067001] sdram: configure success
    st-boot > boot 90010000 - 90000000
    [    0.070592] boot: kernel addr: 0x90010000, fdt addr: 0x90000000
    [    0.076539] 
    [    0.078035] boot: ready to boot kernel ...
    [    0.082149]
    
    ... ...(kernel booting message)
    
    ~ # uname -a
    Linux user 6.12.0 #3 Sun Nov 24 20:40:54 CST 2024 armv7ml GNU/Linux
    ~ # cat /proc/meminfo 
    MemTotal:          32012 kB
    MemFree:           23908 kB
    ... ...
    Percpu:               32 kB
    ~ # iostat 
    Linux 6.12.0 (user)     01/01/70        _armv7ml_       (1 CPU)
    
    avg-cpu:  %user   %nice %system %iowait  %steal   %idle
               0.61    0.00    5.99    0.10    0.00   93.30
    
    Device:            tps   Blk_read/s   Blk_wrtn/s   Blk_read   Blk_wrtn
    mmcblk0           1.81        14.77         6.65       1758        792
    
    ~ #