69 lines
2.0 KiB
C
69 lines
2.0 KiB
C
#include "bootloader.h"
|
|
|
|
#include "ch.h"
|
|
#include "hal.h"
|
|
|
|
#ifdef STM32_BOOTLOADER_ADDRESS
|
|
/* STM32 */
|
|
|
|
/* This code should be checked whether it runs correctly on platforms */
|
|
# define SYMVAL(sym) (uint32_t)(((uint8_t *)&(sym)) - ((uint8_t *)0))
|
|
extern uint32_t __ram0_end__;
|
|
# define BOOTLOADER_MAGIC 0xDEADBEEF
|
|
# define MAGIC_ADDR (unsigned long *)(SYMVAL(__ram0_end__) - 4)
|
|
|
|
/** \brief Jump to the bootloader
|
|
*
|
|
* FIXME: needs doc
|
|
*/
|
|
void bootloader_jump(void) {
|
|
*MAGIC_ADDR = BOOTLOADER_MAGIC; // set magic flag => reset handler will jump into boot loader
|
|
NVIC_SystemReset();
|
|
}
|
|
|
|
/** \brief Enter bootloader mode if requested
|
|
*
|
|
* FIXME: needs doc
|
|
*/
|
|
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 *)STM32_BOOTLOADER_ADDRESS);
|
|
__enable_irq();
|
|
|
|
typedef void (*BootJump_t)(void);
|
|
BootJump_t boot_jump = *(BootJump_t *)(STM32_BOOTLOADER_ADDRESS + 4);
|
|
boot_jump();
|
|
while (1)
|
|
;
|
|
}
|
|
}
|
|
|
|
#elif defined(KL2x) || defined(K20x) /* STM32_BOOTLOADER_ADDRESS */
|
|
/* Kinetis */
|
|
|
|
# if defined(KIIBOHD_BOOTLOADER)
|
|
/* Kiibohd Bootloader (MCHCK and Infinity KB) */
|
|
# define SCB_AIRCR_VECTKEY_WRITEMAGIC 0x05FA0000
|
|
const uint8_t sys_reset_to_loader_magic[] = "\xff\x00\x7fRESET TO LOADER\x7f\x00\xff";
|
|
void bootloader_jump(void) {
|
|
__builtin_memcpy((void *)VBAT, (const void *)sys_reset_to_loader_magic, sizeof(sys_reset_to_loader_magic));
|
|
// request reset
|
|
SCB->AIRCR = SCB_AIRCR_VECTKEY_WRITEMAGIC | SCB_AIRCR_SYSRESETREQ_Msk;
|
|
}
|
|
|
|
# else /* defined(KIIBOHD_BOOTLOADER) */
|
|
/* Default for Kinetis - expecting an ARM Teensy */
|
|
# include "wait.h"
|
|
void bootloader_jump(void) {
|
|
wait_ms(100);
|
|
__BKPT(0);
|
|
}
|
|
# endif /* defined(KIIBOHD_BOOTLOADER) */
|
|
|
|
#else /* neither STM32 nor KINETIS */
|
|
__attribute__((weak)) void bootloader_jump(void) {}
|
|
#endif
|