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Fix RESET not working for keyboards with Kiibohd bootloader (#15430)

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Andrew-Fahmy 2021-12-07 22:36:39 -06:00 • committed by GitHub
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2
docs/flashing.md
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@ -290,7 +290,7 @@ Compatible flashers:
Flashing sequence: Flashing sequence:
1. Enter the bootloader using any of the following methods: 1. Enter the bootloader using any of the following methods:
* Tap the `RESET` keycode (this may only enter the MCU into a "secure" bootloader mode; see https://github.com/qmk/qmk_firmware/issues/6112) * Tap the `RESET` keycode
* Press the `RESET` button on the PCB * Press the `RESET` button on the PCB
2. Wait for the OS to detect the device 2. Wait for the OS to detect the device
3. Flash a .bin file 3. Flash a .bin file

2
platforms/chibios/bootloader.c
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@ -123,7 +123,7 @@ void enter_bootloader_mode_if_requested(void) { /* Jumping to bootloader is not
# if defined(BOOTLOADER_KIIBOHD) # if defined(BOOTLOADER_KIIBOHD)
/* Kiibohd Bootloader (MCHCK and Infinity KB) */ /* Kiibohd Bootloader (MCHCK and Infinity KB) */
# define SCB_AIRCR_VECTKEY_WRITEMAGIC 0x05FA0000 # define SCB_AIRCR_VECTKEY_WRITEMAGIC 0x05FA0000
const uint8_t sys_reset_to_loader_magic[] = "\xff\x00\x7fRESET TO LOADER\x7f\x00\xff"; const uint8_t sys_reset_to_loader_magic[] = "\xff\x00\x7fRESET TO LOADER\x7f\x00\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00";
__attribute__((weak)) void bootloader_jump(void) { __attribute__((weak)) void bootloader_jump(void) {
void *volatile vbat = (void *)VBAT; void *volatile vbat = (void *)VBAT;
__builtin_memcpy(vbat, (const void *)sys_reset_to_loader_magic, sizeof(sys_reset_to_loader_magic)); __builtin_memcpy(vbat, (const void *)sys_reset_to_loader_magic, sizeof(sys_reset_to_loader_magic));