/* * This file is part of the Trezor project, https://trezor.io/ * * Copyright (C) 2018 Pavol Rusnak <stick@satoshilabs.com> * * This library is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This library 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 Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this library. If not, see <http://www.gnu.org/licenses/>. */ #include <libopencm3/stm32/flash.h> #include <stdint.h> #include <string.h> #include "bl_data.h" #include "gettext.h" #include "layout.h" #include "memory.h" #include "util.h" #if PRODUCTION static int known_bootloader(int r, const uint8_t *hash) { if (r != 32) return 0; if (0 == memcmp(hash, "\xbf\x72\xe2\x5e\x2c\x2f\xc1\xba\x57\x04\x50\xfa\xdf\xb6\x6f\xaa" "\x5a\x71\x6d\xcd\xc0\x33\x35\x88\x55\x7b\x77\x54\x0a\xb8\x7e\x98", 32)) return 1; // 1.2.0a if (0 == memcmp(hash, "\x77\xb8\xe2\xf2\x5f\xaa\x8e\x8c\x7d\x9f\x5b\x32\x3b\x27\xce\x05" "\x6c\xa3\xdb\xc2\x3f\x56\xc3\x7e\xe3\x3f\x97\x7c\xa6\xeb\x4d\x3e", 32)) return 1; // 1.2.0b if (0 == memcmp(hash, "\xc4\xc3\x25\x39\xb4\xa0\x25\xa8\xe7\x53\xa4\xc4\x62\x64\x28\x59" "\x11\xa4\x5f\xcb\x14\xf4\x71\x81\x79\xe7\x11\xb1\xce\x99\x05\x24", 32)) return 1; // 1.2.5 if (0 == memcmp(hash, "\x42\x59\x66\x94\xa0\xf2\x9d\x1e\xc2\x35\x71\x29\x2d\x54\x39\xd8" "\x2f\xa1\x8c\x07\x37\xcb\x10\x7e\x98\xf6\x1e\xf5\x93\x4d\xe7\x16", 32)) return 1; // 1.3.0a if (0 == memcmp(hash, "\x3a\xcf\x2e\x51\x0b\x0f\xe1\x56\xb5\x58\xbb\xf7\x9c\x7e\x48\x5e" "\xb0\x26\xe5\xe0\x8c\xb4\x4d\x15\x2d\x44\xd6\x4e\x0c\x6a\x41\x37", 32)) return 1; // 1.3.0b if (0 == memcmp(hash, "\x15\x85\x21\x5b\xc6\xe5\x5a\x34\x07\xa8\xb3\xee\xe2\x79\x03\x4e" "\x95\xb9\xc4\x34\x00\x33\xe1\xb6\xae\x16\x0c\xe6\x61\x19\x67\x15", 32)) return 1; // 1.3.1 if (0 == memcmp(hash, "\x76\x51\xb7\xca\xba\x5a\xae\x0c\xc1\xc6\x5c\x83\x04\xf7\x60\x39" "\x6f\x77\x60\x6c\xd3\x99\x0c\x99\x15\x98\xf0\xe2\x2a\x81\xe0\x07", 32)) return 1; // 1.3.2 // note to those verifying these values: bootloader versions above this // comment are aligned/padded to 32KiB with trailing 0xFF bytes and versions // below are padded with 0x00. // // for more info, refer to "make -C bootloader align" and // "firmware/bl_data.py". if (0 == memcmp(hash, "\x8c\xe8\xd7\x9e\xdf\x43\x0c\x03\x42\x64\x68\x6c\xa9\xb1\xd7\x8d" "\x26\xed\xb2\xac\xab\x71\x39\xbe\x8f\x98\x5c\x2a\x3c\x6c\xae\x11", 32)) return 1; // 1.3.3 if (0 == memcmp(hash, "\x63\x30\xfc\xec\x16\x72\xfa\xd3\x0b\x42\x1b\x60\xf7\x4f\x83\x9a" "\x39\x39\x33\x45\x65\xcb\x70\x3b\x2b\xd7\x18\x2e\xa2\xdd\xa0\x19", 32)) return 1; // 1.4.0 shipped with fw 1.6.1 if (0 == memcmp(hash, "\xaf\xb4\xcf\x7a\x4a\x57\x96\x10\x0e\xd5\x41\x6b\x75\x12\x1b\xc7" "\x10\x08\xc2\xa2\xfd\x54\x49\xbd\x8f\x63\xcc\x22\xa6\xa7\xd6\x80", 32)) return 1; // 1.5.0 shipped with fw 1.6.2 if (0 == memcmp(hash, "\x51\x12\x90\xa8\x72\x3f\xaf\xe7\x34\x15\x25\x9d\x25\x96\x76\x54" "\x06\x32\x5c\xe2\x4b\x4b\x80\x03\x2c\x0b\x70\xb0\x5d\x98\x46\xe9", 32)) return 1; // 1.5.1 shipped with fw 1.6.3 if (0 == memcmp(hash, "\x3e\xc4\xbd\xd5\x77\xea\x0c\x36\xc7\xba\xb7\xb9\xa3\x5b\x87\x17" "\xb3\xf1\xfc\x2f\x80\x9e\x69\x0c\x8a\xbe\x5b\x05\xfb\xc2\x43\xc6", 32)) return 1; // 1.6.0 shipped with fw 1.7.0 if (0 == memcmp(hash, "\x8e\x83\x02\x3f\x0d\x4f\x82\x4f\x64\x71\x20\x75\x2b\x6c\x71\x6f" "\x55\xd7\x95\x70\x66\x8f\xd4\x90\x65\xd5\xb7\x97\x6e\x7a\x6e\x19", 32)) return 1; // 1.6.0 shipped with fw 1.7.1 and 1.7.2 if (0 == memcmp(hash, "\xa2\x36\x6e\x77\xde\x8e\xfd\xfd\xc9\x99\xf4\x72\x20\xc0\x16\xe3" "\x3f\x6d\x24\x24\xe2\x45\x90\x79\x11\x7a\x90\xb3\xa8\x88\xba\xdd", 32)) return 1; // 1.6.1 shipped with fw 1.7.3 if (0 == memcmp(hash, "\xf7\xfa\x16\x5b\xe6\xd7\x80\xf3\xe1\xaf\x00\xab\xc0\x7d\xf8\xb3" "\x07\x6b\xcd\xad\x72\xd7\x0d\xa2\x2a\x63\xd8\x89\x6b\x63\x91\xd8", 32)) return 1; // 1.8.0 shipped with fw 1.8.0 and 1.8.1 if (0 == memcmp(hash, "\x74\x47\xa4\x17\x17\x02\x2e\x3e\xb3\x20\x11\xb0\x0b\x2a\x68\xeb" "\xb9\xc7\xf6\x03\xcd\xc7\x30\xe7\x30\x78\x50\xa3\xf4\xd6\x2a\x5c", 32)) return 1; // 1.10.0 shipped with fw 1.10.0 return 0; } #endif /** * If bootloader is older and known, replace with newer bootloader. * If bootloader is unknown, halt with error message. * * @param shutdown_on_replace: if true, shuts down device instead of return */ void check_and_replace_bootloader(bool shutdown_on_replace) { #if PRODUCTION uint8_t hash[32] = {0}; int r = memory_bootloader_hash(hash); if (!known_bootloader(r, hash)) { layoutDialog(&bmp_icon_error, NULL, NULL, NULL, _("Unknown bootloader"), _("detected."), NULL, _("Unplug your Trezor"), _("contact our support."), NULL); shutdown(); } if (is_mode_unprivileged()) { return; } if (r == 32 && 0 == memcmp(hash, bl_hash, 32)) { // all OK -> done return; } // ENABLE THIS AT YOUR OWN RISK // ATTEMPTING TO OVERWRITE BOOTLOADER WITH UNSIGNED FIRMWARE MAY BRICK // YOUR DEVICE. layoutDialog(&bmp_icon_warning, NULL, NULL, NULL, _("Updating bootloader"), NULL, NULL, _("DO NOT UNPLUG"), _("YOUR TREZOR!"), NULL); // unlock sectors memory_write_unlock(); for (int tries = 0; tries < 10; tries++) { // replace bootloader flash_wait_for_last_operation(); flash_clear_status_flags(); flash_unlock(); for (int i = FLASH_BOOT_SECTOR_FIRST; i <= FLASH_BOOT_SECTOR_LAST; i++) { flash_erase_sector(i, FLASH_CR_PROGRAM_X32); } for (int i = 0; i < FLASH_BOOT_LEN / 4; i++) { const uint32_t *w = (const uint32_t *)(bl_data + i * 4); flash_program_word(FLASH_BOOT_START + i * 4, *w); } flash_wait_for_last_operation(); flash_lock(); // check whether the write was OK r = memory_bootloader_hash(hash); if (r == 32 && 0 == memcmp(hash, bl_hash, 32)) { if (shutdown_on_replace) { // OK -> show info and halt layoutDialog(&bmp_icon_info, NULL, NULL, NULL, _("Update finished"), _("successfully."), NULL, _("Please reconnect"), _("the device."), NULL); shutdown(); } return; } } // show info and halt layoutDialog(&bmp_icon_error, NULL, NULL, NULL, _("Bootloader update"), _("broken."), NULL, _("Unplug your Trezor"), _("contact our support."), NULL); shutdown(); #endif // prevent compiler warning when PRODUCTION==0 (void)shutdown_on_replace; }