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stm32: stm32g0/h7 usb_dfu_bootloader support (#5596) 

Signed-off-by: Alan.Ma from BigTreeTech <tech@biqu3d.com>
This commit is contained in:
BIGTREETECH 2022-07-01 01:58:00 +08:00 committed by GitHub
parent 167736ad1c
commit 1636a9759b
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 36 additions and 2 deletions
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3
scripts/flash_usb.py
View File

@ -339,7 +339,8 @@ MCUTYPES = {
'sam3': flash_atsam3, 'sam4': flash_atsam4, 'samd': flash_atsamd,
'same70': flash_atsam4, 'lpc176': flash_lpc176x, 'stm32f103': flash_stm32f1,
'stm32f4': flash_stm32f4, 'stm32f042': flash_stm32f4,
'stm32f072': flash_stm32f4, 'rp2040': flash_rp2040
'stm32f072': flash_stm32f4, 'stm32g0b1': flash_stm32f4,
'stm32h7': flash_stm32f4, 'rp2040': flash_rp2040
}

3
src/stm32/stm32g0.c
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@ -147,7 +147,6 @@ usb_request_bootloader(void)
void
armcm_main(void)
{
check_usb_dfu_bootloader();
SCB->VTOR = (uint32_t)VectorTable;
// Reset clock registers (in case bootloader has changed them)
@ -164,6 +163,8 @@ armcm_main(void)
RCC->APBENR1 = 0x00000000;
RCC->APBENR2 = 0x00000000;
check_usb_dfu_bootloader();
// Set flash latency
FLASH->ACR = (2<<FLASH_ACR_LATENCY_Pos) | FLASH_ACR_ICEN | FLASH_ACR_PRFTEN;

32
src/stm32/stm32h7.c
View File

@ -6,6 +6,7 @@
#include "autoconf.h" // CONFIG_CLOCK_REF_FREQ
#include "board/armcm_boot.h" // VectorTable
#include "board/irq.h" // irq_disable
#include "board/armcm_reset.h" // try_request_canboot
#include "command.h" // DECL_CONSTANT_STR
#include "internal.h" // get_pclock_frequency
@ -187,11 +188,36 @@ clock_setup(void)
* USB bootloader
****************************************************************/
#define USB_BOOT_FLAG_ADDR (CONFIG_RAM_START + CONFIG_RAM_SIZE - 1024)
#define USB_BOOT_FLAG 0x55534220424f4f54 // "USB BOOT"
// Flag that bootloader is desired and reboot
static void
usb_reboot_for_dfu_bootloader(void)
{
irq_disable();
*(uint64_t*)USB_BOOT_FLAG_ADDR = USB_BOOT_FLAG;
NVIC_SystemReset();
}
// Check if rebooting into system DFU Bootloader
static void
check_usb_dfu_bootloader(void)
{
if (!CONFIG_USBSERIAL || *(uint64_t*)USB_BOOT_FLAG_ADDR != USB_BOOT_FLAG)
return;
*(uint64_t*)USB_BOOT_FLAG_ADDR = 0;
uint32_t *sysbase = (uint32_t*)0x1FF09800;
asm volatile("mov sp, %0\n bx %1"
: : "r"(sysbase[0]), "r"(sysbase[1]));
}
// Handle USB reboot requests
void
usb_request_bootloader(void)
{
try_request_canboot();
usb_reboot_for_dfu_bootloader();
}
@ -205,8 +231,14 @@ armcm_main(void)
{
// Run SystemInit() and then restore VTOR
SystemInit();
RCC->D1CCIPR = 0x00000000;
RCC->D2CCIP1R = 0x00000000;
RCC->D2CCIP2R = 0x00000000;
RCC->D3CCIPR = 0x00000000;
SCB->VTOR = (uint32_t)VectorTable;
check_usb_dfu_bootloader();
clock_setup();
sched_main();