1 #include "bootloader.h"
6 #ifdef STM32_BOOTLOADER_ADDRESS
9 /* This code should be checked whether it runs correctly on platforms */
10 #define SYMVAL(sym) (uint32_t)(((uint8_t *)&(sym)) - ((uint8_t *)0))
11 extern uint32_t __ram0_end__;
12 #define BOOTLOADER_MAGIC 0xDEADBEEF
13 #define MAGIC_ADDR (unsigned long*)(SYMVAL(__ram0_end__) - 4)
16 /** \brief Jump to the bootloader
20 void bootloader_jump(void) {
21 *MAGIC_ADDR = BOOTLOADER_MAGIC; // set magic flag => reset handler will jump into boot loader
25 /** \brief Enter bootloader mode if requested
29 void enter_bootloader_mode_if_requested(void) {
30 unsigned long* check = MAGIC_ADDR;
31 if(*check == BOOTLOADER_MAGIC) {
34 __set_MSP(*(__IO uint32_t*)STM32_BOOTLOADER_ADDRESS);
37 typedef void (*BootJump_t)(void);
38 BootJump_t boot_jump = *(BootJump_t*)(STM32_BOOTLOADER_ADDRESS + 4);
44 #elif defined(KL2x) || defined(K20x) /* STM32_BOOTLOADER_ADDRESS */
47 #if defined(KIIBOHD_BOOTLOADER)
48 /* Kiibohd Bootloader (MCHCK and Infinity KB) */
49 #define SCB_AIRCR_VECTKEY_WRITEMAGIC 0x05FA0000
50 const uint8_t sys_reset_to_loader_magic[] = "\xff\x00\x7fRESET TO LOADER\x7f\x00\xff";
51 void bootloader_jump(void) {
52 __builtin_memcpy((void *)VBAT, (const void *)sys_reset_to_loader_magic, sizeof(sys_reset_to_loader_magic));
54 SCB->AIRCR = SCB_AIRCR_VECTKEY_WRITEMAGIC | SCB_AIRCR_SYSRESETREQ_Msk;
57 #else /* defined(KIIBOHD_BOOTLOADER) */
58 /* Default for Kinetis - expecting an ARM Teensy */
60 void bootloader_jump(void) {
64 #endif /* defined(KIIBOHD_BOOTLOADER) */
66 #else /* neither STM32 nor KINETIS */
68 void bootloader_jump(void) {}