common/chibios/bootloader.c

   1 #include "bootloader.h"
   2
   3 #include "ch.h"
   4 #include "hal.h"
   5
   6 #ifdef STM32_BOOTLOADER_ADDRESS
   7 /* STM32 */
   8
   9 #if defined(STM32F0XX)
  10 /* This code should be checked whether it runs correctly on platforms */
  11 #define SYMVAL(sym) (uint32_t)(((uint8_t *)&(sym)) - ((uint8_t *)0))
  12 extern uint32_t __ram0_end__;
  13
  14 void bootloader_jump(void) {
  15   *((unsigned long *)(SYMVAL(__ram0_end__) - 4)) = 0xDEADBEEF; // set magic flag => reset handler will jump into boot loader
  16    NVIC_SystemReset();
  17 }
  18
  19 #else /* defined(STM32F0XX) */
  20 #error Check that the bootloader code works on your platform and add it to bootloader.c!
  21 #endif /* defined(STM32F0XX) */
  22
  23 #elif defined(KL2x) || defined(K20x) /* STM32_BOOTLOADER_ADDRESS */
  24 /* Kinetis */
  25
  26 #if defined(KIIBOHD_BOOTLOADER)
  27 /* Kiibohd Bootloader (MCHCK and Infinity KB) */
  28 #define SCB_AIRCR_VECTKEY_WRITEMAGIC 0x05FA0000
  29 const uint8_t sys_reset_to_loader_magic[] = "\xff\x00\x7fRESET TO LOADER\x7f\x00\xff";
  30 void bootloader_jump(void) {
  31   __builtin_memcpy((void *)VBAT, (const void *)sys_reset_to_loader_magic, sizeof(sys_reset_to_loader_magic));
  32   // request reset
  33   SCB->AIRCR = SCB_AIRCR_VECTKEY_WRITEMAGIC | SCB_AIRCR_SYSRESETREQ_Msk;
  34 }
  35
  36 #else /* defined(KIIBOHD_BOOTLOADER) */
  37 /* Default for Kinetis - expecting an ARM Teensy */
  38 void bootloader_jump(void) {
  39         chThdSleepMilliseconds(100);
  40         __BKPT(0);
  41 }
  42 #endif /* defined(KIIBOHD_BOOTLOADER) */
  43
  44 #else /* neither STM32 nor KINETIS */
  45 __attribute__((weak))
  46 void bootloader_jump(void) {}
  47 #endif