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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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5
src/stm32/Kconfig
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@ -93,11 +93,13 @@ config STACK_SIZE
default 512
choice
prompt "Bootloader offset" if MACH_STM32F407 || MACH_STM32F103 || MACH_STM32F070
prompt "Bootloader offset" if MACH_STM32F407 || MACH_STM32F405 || MACH_STM32F103 || MACH_STM32F070
config STM32_FLASH_START_800
bool "2KiB bootloader (HID Bootloader)" if MACH_STM32F103
config STM32_FLASH_START_2000
bool "8KiB bootloader (stm32duino)" if MACH_STM32F103 || MACH_STM32F070
config STM32_FLASH_START_4000
bool "16KiB bootloader (HID Bootloader)" if MACH_STM32F405 || MACH_STM32F407
config STM32_FLASH_START_7000
bool "28KiB bootloader" if MACH_STM32F103
config STM32_FLASH_START_8000
@ -111,6 +113,7 @@ config FLASH_START
hex
default 0x8000800 if STM32_FLASH_START_800
default 0x8002000 if STM32_FLASH_START_2000
default 0x8004000 if STM32_FLASH_START_4000
default 0x8007000 if STM32_FLASH_START_7000
default 0x8008000 if STM32_FLASH_START_8000
default 0x8010000 if STM32_FLASH_START_10000

13
src/stm32/stm32f4.c
View file

@ -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();
}