diff options
Diffstat (limited to 'tmk_core/common/chibios')
| -rw-r--r-- | tmk_core/common/chibios/bootloader.c | 46 |
1 files changed, 15 insertions, 31 deletions
diff --git a/tmk_core/common/chibios/bootloader.c b/tmk_core/common/chibios/bootloader.c index dceeaa6b19..743448ee18 100644 --- a/tmk_core/common/chibios/bootloader.c +++ b/tmk_core/common/chibios/bootloader.c @@ -2,6 +2,7 @@ #include "ch.h" #include "hal.h" +#include "wait.h" /* This code should be checked whether it runs correctly on platforms */ #define SYMVAL(sym) (uint32_t)(((uint8_t *)&(sym)) - ((uint8_t *)0)) @@ -31,45 +32,28 @@ extern uint32_t __ram0_end__; -# define bootdelay(loopcount) \ - do { \ - for (int i = 0; i < loopcount; ++i) { \ - __asm__ volatile("nop\n\t" \ - "nop\n\t" \ - "nop\n\t"); \ - } \ - } while (0) - void bootloader_jump(void) { - *MAGIC_ADDR = BOOTLOADER_MAGIC; // set magic flag => reset handler will jump into boot loader - NVIC_SystemReset(); -} - -void enter_bootloader_mode_if_requested(void) { - unsigned long *check = MAGIC_ADDR; - if (*check == BOOTLOADER_MAGIC) { - *check = 0; - - // For STM32 MCUs with dual-bank flash, and we're incapable of jumping to the bootloader. The first valid flash - // bank is executed unconditionally after a reset, so it doesn't enter DFU unless BOOT0 is high. Instead, we do - // it with hardware...in this case, we pull a GPIO high/low depending on the configuration, connects 3.3V to - // BOOT0's RC charging circuit, lets it charge the capacitor, and issue a system reset. See the QMK discord - // #hardware channel pins for an example circuit. - palSetPadMode(PAL_PORT(STM32_BOOTLOADER_DUAL_BANK_GPIO), PAL_PAD(STM32_BOOTLOADER_DUAL_BANK_GPIO), PAL_MODE_OUTPUT_PUSHPULL); + // For STM32 MCUs with dual-bank flash, and we're incapable of jumping to the bootloader. The first valid flash + // bank is executed unconditionally after a reset, so it doesn't enter DFU unless BOOT0 is high. Instead, we do + // it with hardware...in this case, we pull a GPIO high/low depending on the configuration, connects 3.3V to + // BOOT0's RC charging circuit, lets it charge the capacitor, and issue a system reset. See the QMK discord + // #hardware channel pins for an example circuit. + palSetPadMode(PAL_PORT(STM32_BOOTLOADER_DUAL_BANK_GPIO), PAL_PAD(STM32_BOOTLOADER_DUAL_BANK_GPIO), PAL_MODE_OUTPUT_PUSHPULL); # if STM32_BOOTLOADER_DUAL_BANK_POLARITY - palSetPad(PAL_PORT(STM32_BOOTLOADER_DUAL_BANK_GPIO), PAL_PAD(STM32_BOOTLOADER_DUAL_BANK_GPIO)); + palSetPad(PAL_PORT(STM32_BOOTLOADER_DUAL_BANK_GPIO), PAL_PAD(STM32_BOOTLOADER_DUAL_BANK_GPIO)); # else - palClearPad(PAL_PORT(STM32_BOOTLOADER_DUAL_BANK_GPIO), PAL_PAD(STM32_BOOTLOADER_DUAL_BANK_GPIO)); + palClearPad(PAL_PORT(STM32_BOOTLOADER_DUAL_BANK_GPIO), PAL_PAD(STM32_BOOTLOADER_DUAL_BANK_GPIO)); # endif - // Wait for a while for the capacitor to charge - bootdelay(STM32_BOOTLOADER_DUAL_BANK_DELAY); + // Wait for a while for the capacitor to charge + wait_ms(100); - // Issue a system reset to get the ROM bootloader to execute, with BOOT0 high - NVIC_SystemReset(); - } + // Issue a system reset to get the ROM bootloader to execute, with BOOT0 high + NVIC_SystemReset(); } +void enter_bootloader_mode_if_requested(void) {} // not needed at all, but if anybody attempts to invoke it.... + #elif defined(STM32_BOOTLOADER_ADDRESS) // STM32_BOOTLOADER_DUAL_BANK extern uint32_t __ram0_end__; |