Merge commit '71381457fa1311dfa0b58ba882a96db740640871'

[max/tmk_keyboard.git] / tmk_core / common / chibios / bootloader.c

diff --git a/tmk_core/common/chibios/bootloader.c b/tmk_core/common/chibios/bootloader.c
index 6c34e2e060f67b20afce2cad6b962da224a401a9..8a533ab6f652ccfeb7e8765876157eae89f2a340 100644 (file)
--- a/tmk_core/common/chibios/bootloader.c
+++ b/tmk_core/common/chibios/bootloader.c
@@ -1,7 +1,47 @@
-/* TODO */
-/* ... chip dependent ... */
-
 #include "bootloader.h"
 
+#include "ch.h"
+#include "hal.h"
+
+#ifdef STM32_BOOTLOADER_ADDRESS
+/* STM32 */
+
+#if defined(STM32F0XX)
+/* 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__;
+
+void bootloader_jump(void) {
+  *((unsigned long *)(SYMVAL(__ram0_end__) - 4)) = 0xDEADBEEF; // set magic flag => reset handler will jump into boot loader
+   NVIC_SystemReset();
+}
+
+#else /* defined(STM32F0XX) */
+#error Check that the bootloader code works on your platform and add it to bootloader.c!
+#endif /* defined(STM32F0XX) */
+
+#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 */
+void bootloader_jump(void) {
+       chThdSleepMilliseconds(100);
+       __BKPT(0);
+}
+#endif /* defined(KIIBOHD_BOOTLOADER) */
 
+#else /* neither STM32 nor KINETIS */
+__attribute__((weak))
 void bootloader_jump(void) {}
+#endif
\ No newline at end of file