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stm32f1: Add support for HID Bootloader

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Signed-off-by: Eric Callahan <arksine.code@gmail.com>
This commit is contained in:
Arksine 2020-04-24 14:29:56 -04:00 • committed by KevinOConnor
parent 4b9b705b99
commit 05efccc874
4 changed files with 42 additions and 5 deletions
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3
src/stm32/Kconfig
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@ -94,6 +94,8 @@ config STACK_SIZE
choice
prompt "Bootloader offset" if MACH_STM32F407 || 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_7000
@ -107,6 +109,7 @@ choice
endchoice
config FLASH_START
hex
default 0x8000800 if STM32_FLASH_START_800
default 0x8002000 if STM32_FLASH_START_2000
default 0x8007000 if STM32_FLASH_START_7000
default 0x8008000 if STM32_FLASH_START_8000

6
src/stm32/Makefile
View file

@ -52,7 +52,11 @@ $(OUT)klipper.bin: $(OUT)klipper.elf
$(Q)$(OBJCOPY) -O binary $< $@
# Flash rules
flash: $(OUT)klipper.bin
lib/hidflash/hid-flash:
@echo " Building hid-flash"
$(Q)make -C lib/hidflash
flash: $(OUT)klipper.bin lib/hidflash/hid-flash
@echo " Flashing $< to $(FLASH_DEVICE)"
$(Q)$(PYTHON) ./scripts/flash_usb.py -t $(CONFIG_MCU) -d "$(FLASH_DEVICE)" -s "$(CONFIG_FLASH_START)" $(if $(NOSUDO),--no-sudo) $(OUT)klipper.bin

11
src/stm32/stm32f1.c
View file

@ -112,13 +112,18 @@ gpio_peripheral(uint32_t gpio, uint32_t mode, int pullup)
void
usb_request_bootloader(void)
{
if (!CONFIG_STM32_FLASH_START_2000)
if (!(CONFIG_STM32_FLASH_START_2000 || CONFIG_STM32_FLASH_START_800))
return;
// Enter "stm32duino" bootloader
// Enter "stm32duino" or HID bootloader
irq_disable();
RCC->APB1ENR |= RCC_APB1ENR_PWREN | RCC_APB1ENR_BKPEN;
PWR->CR |= PWR_CR_DBP;
BKP->DR10 = 0x01;
if (CONFIG_STM32_FLASH_START_800)
// HID Bootloader magic key
BKP->DR4 = 0x424C;
else
// stm32duino bootloader magic key
BKP->DR10 = 0x01;
PWR->CR &=~ PWR_CR_DBP;
NVIC_SystemReset();
}