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stm32f4: Add support for HID bootloader

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Signed-off-by:  Eric Callahan <arksine.code@gmail.com>
This commit is contained in:
Arksine 2020-04-25 14:20:25 -04:00 • committed by KevinOConnor
parent 380ba2a618
commit ab87af90a3
3 changed files with 23 additions and 4 deletions
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13
src/stm32/stm32f4.c
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@ -98,7 +98,18 @@ void
usb_request_bootloader(void)
{
irq_disable();
*(uint64_t*)USB_BOOT_FLAG_ADDR = USB_BOOT_FLAG;
if (CONFIG_STM32_FLASH_START_4000) {
// HID Bootloader
RCC->APB1ENR |= RCC_APB1ENR_PWREN;
RCC->APB1ENR;
PWR->CR |= PWR_CR_DBP;
// HID Bootloader magic key
RTC->BKP4R = 0x424C;
PWR->CR &= ~PWR_CR_DBP;
} else {
// System DFU Bootloader
*(uint64_t*)USB_BOOT_FLAG_ADDR = USB_BOOT_FLAG;
}
NVIC_SystemReset();
}