- #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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