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#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
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