stm32/modmachine: Add ability to pass through user data to mboot.
#include "modmachine.h"
#include "py/gc.h"
#include "py/runtime.h"
+#include "py/objstr.h"
#include "py/mperrno.h"
#include "py/mphal.h"
#include "extmod/machine_mem.h"
@@ -273,6 +274,20 @@ STATIC NORETURN mp_obj_t machine_bootloader(size_t n_args, const mp_obj_t *args)
__set_MSP(*(volatile uint32_t*)0x08000000);
((void (*)(uint32_t)) *((volatile uint32_t*)(0x08000000 + 4)))(0x70ad0000);
}
+
+ if (n_args == 1 && mp_obj_is_str_or_bytes(args[0])) {
+ // With a string/bytes given, pass its data to the custom bootloader
+ size_t len;
+ const char *data = mp_obj_str_get_data(args[0], &len);
+ void *mboot_region = (void*)*((volatile uint32_t*)0x08000000);
+ memmove(mboot_region, data, len);
+ #if __DCACHE_PRESENT == 1
+ SCB_DisableICache();
+ SCB_DisableDCache();
+ #endif
+ __set_MSP(*(volatile uint32_t*)0x08000000);
+ ((void (*)(uint32_t)) *((volatile uint32_t*)(0x08000000 + 4)))(0x70ad0080);
+ }
#endif
#if defined(STM32F7) || defined(STM32H7)
