trezor-firmware/core/embed/reflash/main.c

/*
 * This file is part of the Trezor project, https://trezor.io/
 *
 * Copyright (c) SatoshiLabs
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <stdlib.h>
#include <string.h>
#include <sys/types.h>

#include STM32_HAL_H

#include "common.h"
#include "display.h"
#include "flash.h"
#include "image.h"
#include "rng.h"
#include "sbu.h"
#include "sdcard.h"
#include "secbool.h"
#include "touch.h"

static void progress_callback(int pos, int len) { display_printf("."); }

static void flash_from_sdcard(uint8_t sector, uint32_t source,
                              uint32_t length) {
  static uint32_t buf[SDCARD_BLOCK_SIZE / sizeof(uint32_t)];

  ensure(sectrue * (source % SDCARD_BLOCK_SIZE == 0),
         "source not a multiple of block size");
  ensure(sectrue * (length % SDCARD_BLOCK_SIZE == 0),
         "length not a multiple of block size");

  for (uint32_t i = 0; i < length / SDCARD_BLOCK_SIZE; i++) {
    display_printf("read %d\n", (unsigned int)(i + source / SDCARD_BLOCK_SIZE));

    ensure(sdcard_read_blocks(buf, i + source / SDCARD_BLOCK_SIZE, 1),
           "sdcard_read_blocks");

    for (uint32_t j = 0; j < SDCARD_BLOCK_SIZE / sizeof(uint32_t); j++) {
      ensure(flash_write_word(
                 sector, i * SDCARD_BLOCK_SIZE + j * sizeof(uint32_t), buf[j]),
             NULL);
    }
  }
}

int main(void) {
  sdcard_init();
  touch_init();

  display_orientation(0);
  display_clear();
  display_backlight(255);

  ensure(sdcard_is_present(), "sdcard_is_present");

  display_printf("updating boardloader + bootloader\n");

  static const uint8_t sectors[] = {
      FLASH_SECTOR_BOARDLOADER_START,
      1,
      FLASH_SECTOR_BOARDLOADER_END,
      FLASH_SECTOR_BOOTLOADER,
  };
  display_printf("erasing sectors");
  ensure(flash_erase_sectors(sectors, sizeof(sectors), progress_callback),
         "flash_erase_sectors");
  display_printf("\n");
  display_printf("erased\n");

  ensure(flash_unlock_write(), NULL);

  ensure(sdcard_power_on(), NULL);

#define BOARDLOADER_CHUNK_SIZE (16 * 1024)
#define BOARDLOADER_TOTAL_SIZE (3 * BOARDLOADER_CHUNK_SIZE)
#define BOOTLOADER_TOTAL_SIZE (128 * 1024)

  flash_from_sdcard(FLASH_SECTOR_BOARDLOADER_START, 0 * BOARDLOADER_CHUNK_SIZE,
                    BOARDLOADER_CHUNK_SIZE);
  flash_from_sdcard(1, 1 * BOARDLOADER_CHUNK_SIZE, BOARDLOADER_CHUNK_SIZE);
  flash_from_sdcard(FLASH_SECTOR_BOARDLOADER_END, 2 * BOARDLOADER_CHUNK_SIZE,
                    BOARDLOADER_CHUNK_SIZE);
  flash_from_sdcard(FLASH_SECTOR_BOOTLOADER, BOARDLOADER_TOTAL_SIZE,
                    BOOTLOADER_TOTAL_SIZE);

  display_printf("done\n");
  sdcard_power_off();
  ensure(flash_lock_write(), NULL);

  return 0;
}