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#include "arch.h"
#include "core/system.h"
/* Forward-declare the main function. This is implemented in main.c. */
void main();
/* These are defined in the linker script. */
#ifdef ARCH_STM32L4
extern uint32_t INIT_DATA_VALUES;
extern uint32_t DATA_SEGMENT_START;
extern uint32_t DATA_SEGMENT_STOP;
extern uint32_t BSS_START;
extern uint32_t BSS_END;
/*
* Runs before main. Initializes the data and bss segments by loading them
* into memory.
*/
_Noreturn void on_reset()
{
uint32_t* src;
uint32_t* dest;
src = &INIT_DATA_VALUES;
dest = &DATA_SEGMENT_START;
/* Copy the values from flash into the data segment. */
while (dest != &DATA_SEGMENT_STOP) {
*(dest++) = *(src++);
}
/* Everything in the BSS segment is set to zero. */
dest = &BSS_START;
while (dest != &BSS_END) {
*(dest++) = 0;
}
/* Set the vector offset table to be at the start
* of FLASH memory. */
SCB.vto_r = 0x08000000;
/* Jump to main. */
main();
for(;;);
}
#endif /* ARCH_STM32L4 */
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