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stm32/modmachine: Add ability to pass through user data to mboot.

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This commit is contained in:
Damien George 2019-02-15 15:07:53 +11:00
parent 3669198403
commit 65b1fefa31
1 changed files with 15 additions and 0 deletions
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15
ports/stm32/modmachine.c
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@ -30,6 +30,7 @@
#include "modmachine.h" #include "modmachine.h"
#include "py/gc.h" #include "py/gc.h"
#include "py/runtime.h" #include "py/runtime.h"
#include "py/objstr.h"
#include "py/mperrno.h" #include "py/mperrno.h"
#include "py/mphal.h" #include "py/mphal.h"
#include "extmod/machine_mem.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); __set_MSP(*(volatile uint32_t*)0x08000000);
((void (*)(uint32_t)) *((volatile uint32_t*)(0x08000000 + 4)))(0x70ad0000); ((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 #endif
#if defined(STM32F7) || defined(STM32H7) #if defined(STM32F7) || defined(STM32H7)