mirror of
https://github.com/Keychron/qmk_firmware.git
synced 2024-12-12 05:06:38 +06:00
54 lines
1.7 KiB
C
54 lines
1.7 KiB
C
/* Copyright 2021 QMK
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "bootloader.h"
|
|
|
|
#include <ch.h>
|
|
#include <hal.h>
|
|
#include "wait.h"
|
|
|
|
extern uint32_t __ram0_end__;
|
|
|
|
/* This code should be checked whether it runs correctly on platforms */
|
|
#define SYMVAL(sym) (uint32_t)(((uint8_t *)&(sym)) - ((uint8_t *)0))
|
|
#define BOOTLOADER_MAGIC 0xDEADBEEF
|
|
#define MAGIC_ADDR (unsigned long *)(SYMVAL(__ram0_end__) - 4)
|
|
|
|
__attribute__((weak)) void bootloader_jump(void) {
|
|
*MAGIC_ADDR = BOOTLOADER_MAGIC; // set magic flag => reset handler will jump into boot loader
|
|
NVIC_SystemReset();
|
|
}
|
|
|
|
void enter_bootloader_mode_if_requested(void) {
|
|
unsigned long *check = MAGIC_ADDR;
|
|
if (*check == BOOTLOADER_MAGIC) {
|
|
*check = 0;
|
|
__set_CONTROL(0);
|
|
__set_MSP(*(__IO uint32_t *)WB32_BOOTLOADER_ADDRESS);
|
|
__enable_irq();
|
|
|
|
typedef void (*BootJump_t)(void);
|
|
BootJump_t boot_jump = *(BootJump_t *)(WB32_BOOTLOADER_ADDRESS + 4);
|
|
boot_jump();
|
|
while (1)
|
|
;
|
|
}
|
|
}
|
|
|
|
__attribute__((weak)) void mcu_reset(void) {
|
|
NVIC_SystemReset();
|
|
}
|