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trezor-firmware/micropython/loader/main.c

52 lines
1.2 KiB
C

#include STM32_HAL_H
#include "common.h"
#include "display.h"
#include "image.h"
#define LOADER_FGCOLOR 0xFFFF
#define LOADER_BGCOLOR 0x0000
#define LOADER_PRINT(X) do { display_print(X, -1); display_print_out(LOADER_FGCOLOR, LOADER_BGCOLOR); } while(0)
#define LOADER_PRINTLN(X) do { display_print(X "\n", -1); display_print_out(LOADER_FGCOLOR, LOADER_BGCOLOR); } while(0)
void pendsv_isr_handler(void) {
__fatal_error("pendsv");
}
void check_and_jump(void)
{
LOADER_PRINTLN("checking firmware");
if (image_check_signature((const uint8_t *)FIRMWARE_START)) {
LOADER_PRINTLN("valid firmware image");
// TODO: remove debug wait
LOADER_PRINTLN("waiting 1 second");
HAL_Delay(1000);
// end
LOADER_PRINTLN("JUMP!");
jump_to(FIRMWARE_START + HEADER_SIZE);
} else {
LOADER_PRINTLN("invalid firmware image");
}
}
int main(void)
{
SCB->VTOR = LOADER_START + HEADER_SIZE;
periph_init();
display_init();
display_clear();
display_backlight(255);
LOADER_PRINTLN("TREZOR Loader");
LOADER_PRINTLN("=============");
LOADER_PRINTLN("starting loader");
check_and_jump();
__fatal_error("halt");
return 0;
}