You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
424 lines
12 KiB
424 lines
12 KiB
/*
|
|
* 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 <string.h>
|
|
#include <sys/types.h>
|
|
|
|
#include "common.h"
|
|
#include "compiler_traits.h"
|
|
#include "display.h"
|
|
#include "flash.h"
|
|
#include "image.h"
|
|
#include "mini_printf.h"
|
|
#include "mpu.h"
|
|
#include "random_delays.h"
|
|
#include "secbool.h"
|
|
#ifdef TREZOR_MODEL_T
|
|
#include "touch.h"
|
|
#endif
|
|
#if defined TREZOR_MODEL_R
|
|
#include "button.h"
|
|
#include "rgb_led.h"
|
|
#endif
|
|
#include "usb.h"
|
|
#include "version.h"
|
|
|
|
#include "bootui.h"
|
|
#include "messages.h"
|
|
// #include "mpu.h"
|
|
|
|
const uint8_t BOOTLOADER_KEY_M = 2;
|
|
const uint8_t BOOTLOADER_KEY_N = 3;
|
|
static const uint8_t * const BOOTLOADER_KEYS[] = {
|
|
(const uint8_t *)"\xc2\xc8\x7a\x49\xc5\xa3\x46\x09\x77\xfb\xb2\xec\x9d\xfe\x60\xf0\x6b\xd6\x94\xdb\x82\x44\xbd\x49\x81\xfe\x3b\x7a\x26\x30\x7f\x3f",
|
|
(const uint8_t *)"\x80\xd0\x36\xb0\x87\x39\xb8\x46\xf4\xcb\x77\x59\x30\x78\xde\xb2\x5d\xc9\x48\x7a\xed\xcf\x52\xe3\x0b\x4f\xb7\xcd\x70\x24\x17\x8a",
|
|
(const uint8_t *)"\xb8\x30\x7a\x71\xf5\x52\xc6\x0a\x4c\xbb\x31\x7f\xf4\x8b\x82\xcd\xbf\x6b\x6b\xb5\xf0\x4c\x92\x0f\xec\x7b\xad\xf0\x17\x88\x37\x51",
|
|
// comment the lines above and uncomment the lines below to use a custom signed vendorheader
|
|
// (const uint8_t *)"\xd7\x59\x79\x3b\xbc\x13\xa2\x81\x9a\x82\x7c\x76\xad\xb6\xfb\xa8\xa4\x9a\xee\x00\x7f\x49\xf2\xd0\x99\x2d\x99\xb8\x25\xad\x2c\x48",
|
|
// (const uint8_t *)"\x63\x55\x69\x1c\x17\x8a\x8f\xf9\x10\x07\xa7\x47\x8a\xfb\x95\x5e\xf7\x35\x2c\x63\xe7\xb2\x57\x03\x98\x4c\xf7\x8b\x26\xe2\x1a\x56",
|
|
// (const uint8_t *)"\xee\x93\xa4\xf6\x6f\x8d\x16\xb8\x19\xbb\x9b\xeb\x9f\xfc\xcd\xfc\xdc\x14\x12\xe8\x7f\xee\x6a\x32\x4c\x2a\x99\xa1\xe0\xe6\x71\x48",
|
|
};
|
|
|
|
#define USB_IFACE_NUM 0
|
|
|
|
static void usb_init_all(secbool usb21_landing) {
|
|
usb_dev_info_t dev_info = {
|
|
.device_class = 0x00,
|
|
.device_subclass = 0x00,
|
|
.device_protocol = 0x00,
|
|
.vendor_id = 0x1209,
|
|
.product_id = 0x53C0,
|
|
.release_num = 0x0200,
|
|
.manufacturer = "SatoshiLabs",
|
|
.product = "TREZOR",
|
|
.serial_number = "000000000000000000000000",
|
|
.interface = "TREZOR Interface",
|
|
.usb21_enabled = sectrue,
|
|
.usb21_landing = usb21_landing,
|
|
};
|
|
|
|
static uint8_t rx_buffer[USB_PACKET_SIZE];
|
|
|
|
static const usb_webusb_info_t webusb_info = {
|
|
.iface_num = USB_IFACE_NUM,
|
|
.ep_in = USB_EP_DIR_IN | 0x01,
|
|
.ep_out = USB_EP_DIR_OUT | 0x01,
|
|
.subclass = 0,
|
|
.protocol = 0,
|
|
.max_packet_len = sizeof(rx_buffer),
|
|
.rx_buffer = rx_buffer,
|
|
.polling_interval = 1,
|
|
};
|
|
|
|
usb_init(&dev_info);
|
|
|
|
ensure(usb_webusb_add(&webusb_info), NULL);
|
|
|
|
usb_start();
|
|
}
|
|
|
|
static secbool bootloader_usb_loop(const vendor_header *const vhdr,
|
|
const image_header *const hdr) {
|
|
// if both are NULL, we don't have a firmware installed
|
|
// let's show a webusb landing page in this case
|
|
usb_init_all((vhdr == NULL && hdr == NULL) ? sectrue : secfalse);
|
|
|
|
uint8_t buf[USB_PACKET_SIZE];
|
|
|
|
for (;;) {
|
|
int r = usb_webusb_read_blocking(USB_IFACE_NUM, buf, USB_PACKET_SIZE,
|
|
USB_TIMEOUT);
|
|
if (r != USB_PACKET_SIZE) {
|
|
continue;
|
|
}
|
|
uint16_t msg_id;
|
|
uint32_t msg_size;
|
|
if (sectrue != msg_parse_header(buf, &msg_id, &msg_size)) {
|
|
// invalid header -> discard
|
|
continue;
|
|
}
|
|
switch (msg_id) {
|
|
case 0: // Initialize
|
|
process_msg_Initialize(USB_IFACE_NUM, msg_size, buf, vhdr, hdr);
|
|
break;
|
|
case 1: // Ping
|
|
process_msg_Ping(USB_IFACE_NUM, msg_size, buf);
|
|
break;
|
|
case 5: // WipeDevice
|
|
ui_fadeout();
|
|
ui_screen_wipe_confirm();
|
|
ui_fadein();
|
|
int response = ui_user_input(INPUT_CONFIRM | INPUT_CANCEL);
|
|
if (INPUT_CANCEL == response) {
|
|
ui_fadeout();
|
|
ui_screen_firmware_info(vhdr, hdr);
|
|
ui_fadein();
|
|
send_user_abort(USB_IFACE_NUM, "Wipe cancelled");
|
|
break;
|
|
}
|
|
ui_fadeout();
|
|
ui_screen_wipe();
|
|
ui_fadein();
|
|
r = process_msg_WipeDevice(USB_IFACE_NUM, msg_size, buf);
|
|
if (r < 0) { // error
|
|
ui_fadeout();
|
|
ui_screen_fail();
|
|
ui_fadein();
|
|
usb_stop();
|
|
usb_deinit();
|
|
return secfalse; // shutdown
|
|
} else { // success
|
|
ui_fadeout();
|
|
ui_screen_done(0, sectrue);
|
|
ui_fadein();
|
|
usb_stop();
|
|
usb_deinit();
|
|
return secfalse; // shutdown
|
|
}
|
|
break;
|
|
case 6: // FirmwareErase
|
|
process_msg_FirmwareErase(USB_IFACE_NUM, msg_size, buf);
|
|
break;
|
|
case 7: // FirmwareUpload
|
|
r = process_msg_FirmwareUpload(USB_IFACE_NUM, msg_size, buf);
|
|
if (r < 0 && r != -4) { // error, but not user abort (-4)
|
|
ui_fadeout();
|
|
ui_screen_fail();
|
|
ui_fadein();
|
|
usb_stop();
|
|
usb_deinit();
|
|
return secfalse; // shutdown
|
|
} else if (r == 0) { // last chunk received
|
|
ui_screen_install_progress_upload(1000);
|
|
ui_fadeout();
|
|
ui_screen_done(4, sectrue);
|
|
ui_fadein();
|
|
ui_screen_done(3, secfalse);
|
|
hal_delay(1000);
|
|
ui_screen_done(2, secfalse);
|
|
hal_delay(1000);
|
|
ui_screen_done(1, secfalse);
|
|
hal_delay(1000);
|
|
usb_stop();
|
|
usb_deinit();
|
|
ui_fadeout();
|
|
return sectrue; // jump to firmware
|
|
}
|
|
break;
|
|
case 55: // GetFeatures
|
|
process_msg_GetFeatures(USB_IFACE_NUM, msg_size, buf, vhdr, hdr);
|
|
break;
|
|
default:
|
|
process_msg_unknown(USB_IFACE_NUM, msg_size, buf);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
secbool load_vendor_header_keys(const uint8_t *const data,
|
|
vendor_header *const vhdr) {
|
|
return load_vendor_header(data, BOOTLOADER_KEY_M, BOOTLOADER_KEY_N,
|
|
BOOTLOADER_KEYS, vhdr);
|
|
}
|
|
|
|
static secbool check_vendor_header_lock(const vendor_header *const vhdr) {
|
|
uint8_t lock[FLASH_OTP_BLOCK_SIZE];
|
|
ensure(flash_otp_read(FLASH_OTP_BLOCK_VENDOR_HEADER_LOCK, 0, lock,
|
|
FLASH_OTP_BLOCK_SIZE),
|
|
NULL);
|
|
if (0 ==
|
|
memcmp(lock,
|
|
"\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF"
|
|
"\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF",
|
|
FLASH_OTP_BLOCK_SIZE)) {
|
|
return sectrue;
|
|
}
|
|
uint8_t hash[32];
|
|
vendor_header_hash(vhdr, hash);
|
|
return sectrue * (0 == memcmp(lock, hash, 32));
|
|
}
|
|
|
|
// protection against bootloader downgrade
|
|
|
|
#if PRODUCTION
|
|
|
|
static void check_bootloader_version(void) {
|
|
uint8_t bits[FLASH_OTP_BLOCK_SIZE];
|
|
for (int i = 0; i < FLASH_OTP_BLOCK_SIZE * 8; i++) {
|
|
if (i < VERSION_MONOTONIC) {
|
|
bits[i / 8] &= ~(1 << (7 - (i % 8)));
|
|
} else {
|
|
bits[i / 8] |= (1 << (7 - (i % 8)));
|
|
}
|
|
}
|
|
ensure(flash_otp_write(FLASH_OTP_BLOCK_BOOTLOADER_VERSION, 0, bits,
|
|
FLASH_OTP_BLOCK_SIZE),
|
|
NULL);
|
|
|
|
uint8_t bits2[FLASH_OTP_BLOCK_SIZE];
|
|
ensure(flash_otp_read(FLASH_OTP_BLOCK_BOOTLOADER_VERSION, 0, bits2,
|
|
FLASH_OTP_BLOCK_SIZE),
|
|
NULL);
|
|
|
|
ensure(sectrue * (0 == memcmp(bits, bits2, FLASH_OTP_BLOCK_SIZE)),
|
|
"Bootloader downgraded");
|
|
}
|
|
|
|
#endif
|
|
|
|
int main(void) {
|
|
// grab "stay in bootloader" flag as soon as possible
|
|
register uint32_t r11 __asm__("r11");
|
|
volatile uint32_t stay_in_bootloader_flag = r11;
|
|
|
|
random_delays_init();
|
|
// display_init_seq();
|
|
#if defined TREZOR_MODEL_T
|
|
touch_power_on();
|
|
touch_init();
|
|
#endif
|
|
|
|
#if defined TREZOR_MODEL_R
|
|
button_init();
|
|
rgb_led_init();
|
|
#endif
|
|
|
|
mpu_config_bootloader();
|
|
|
|
#if PRODUCTION
|
|
check_bootloader_version();
|
|
#endif
|
|
|
|
display_clear();
|
|
|
|
// was there reboot with request to stay in bootloader?
|
|
secbool stay_in_bootloader = secfalse;
|
|
if (stay_in_bootloader_flag == STAY_IN_BOOTLOADER_FLAG) {
|
|
stay_in_bootloader = sectrue;
|
|
}
|
|
|
|
// delay to detect touch or skip if we know we are staying in bootloader
|
|
// anyway
|
|
uint32_t touched = 0;
|
|
#if defined TREZOR_MODEL_T
|
|
if (stay_in_bootloader != sectrue) {
|
|
for (int i = 0; i < 100; i++) {
|
|
touched = touch_is_detected() | touch_read();
|
|
if (touched) {
|
|
break;
|
|
}
|
|
hal_delay(1);
|
|
}
|
|
}
|
|
#elif defined TREZOR_MODEL_R
|
|
button_read();
|
|
if (button_state_left() == 1) {
|
|
touched = 1;
|
|
}
|
|
#endif
|
|
|
|
vendor_header vhdr;
|
|
image_header hdr;
|
|
// detect whether the devices contains a valid firmware
|
|
|
|
secbool firmware_present =
|
|
load_vendor_header_keys((const uint8_t *)FIRMWARE_START, &vhdr);
|
|
if (sectrue == firmware_present) {
|
|
firmware_present = check_vendor_header_lock(&vhdr);
|
|
}
|
|
if (sectrue == firmware_present) {
|
|
firmware_present = load_image_header(
|
|
(const uint8_t *)(FIRMWARE_START + vhdr.hdrlen), FIRMWARE_IMAGE_MAGIC,
|
|
FIRMWARE_IMAGE_MAXSIZE, vhdr.vsig_m, vhdr.vsig_n, vhdr.vpub, &hdr);
|
|
}
|
|
if (sectrue == firmware_present) {
|
|
firmware_present =
|
|
check_image_contents(&hdr, IMAGE_HEADER_SIZE + vhdr.hdrlen,
|
|
FIRMWARE_SECTORS, FIRMWARE_SECTORS_COUNT);
|
|
}
|
|
|
|
// start the bootloader if no or broken firmware found ...
|
|
if (firmware_present != sectrue) {
|
|
// show intro animation
|
|
|
|
// no ui_fadeout(); - we already start from black screen
|
|
ui_screen_welcome_first();
|
|
ui_fadein();
|
|
|
|
hal_delay(1000);
|
|
|
|
ui_fadeout();
|
|
ui_screen_welcome_second();
|
|
ui_fadein();
|
|
|
|
hal_delay(1000);
|
|
|
|
ui_fadeout();
|
|
ui_screen_welcome_third();
|
|
ui_fadein();
|
|
|
|
// erase storage
|
|
ensure(flash_erase_sectors(STORAGE_SECTORS, STORAGE_SECTORS_COUNT, NULL),
|
|
NULL);
|
|
|
|
// and start the usb loop
|
|
if (bootloader_usb_loop(NULL, NULL) != sectrue) {
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
// ... or if user touched the screen on start
|
|
// ... or we have stay_in_bootloader flag to force it
|
|
if (touched || stay_in_bootloader == sectrue) {
|
|
// no ui_fadeout(); - we already start from black screen
|
|
ui_screen_firmware_info(&vhdr, &hdr);
|
|
ui_fadein();
|
|
|
|
// and start the usb loop
|
|
if (bootloader_usb_loop(&vhdr, &hdr) != sectrue) {
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
ensure(load_vendor_header_keys((const uint8_t *)FIRMWARE_START, &vhdr),
|
|
"invalid vendor header");
|
|
|
|
ensure(check_vendor_header_lock(&vhdr), "unauthorized vendor keys");
|
|
|
|
ensure(load_image_header((const uint8_t *)(FIRMWARE_START + vhdr.hdrlen),
|
|
FIRMWARE_IMAGE_MAGIC, FIRMWARE_IMAGE_MAXSIZE,
|
|
vhdr.vsig_m, vhdr.vsig_n, vhdr.vpub, &hdr),
|
|
"invalid firmware header");
|
|
|
|
ensure(check_image_contents(&hdr, IMAGE_HEADER_SIZE + vhdr.hdrlen,
|
|
FIRMWARE_SECTORS, FIRMWARE_SECTORS_COUNT),
|
|
"invalid firmware hash");
|
|
|
|
// if all VTRUST flags are unset = ultimate trust => skip the procedure
|
|
|
|
if ((vhdr.vtrust & VTRUST_ALL) != VTRUST_ALL) {
|
|
// ui_fadeout(); // no fadeout - we start from black screen
|
|
ui_screen_boot(&vhdr, &hdr);
|
|
ui_fadein();
|
|
|
|
int delay = (vhdr.vtrust & VTRUST_WAIT) ^ VTRUST_WAIT;
|
|
if (delay > 1) {
|
|
while (delay > 0) {
|
|
ui_screen_boot_wait(delay);
|
|
hal_delay(1000);
|
|
delay--;
|
|
}
|
|
} else if (delay == 1) {
|
|
hal_delay(1000);
|
|
}
|
|
|
|
if ((vhdr.vtrust & VTRUST_CLICK) == 0) {
|
|
ui_screen_boot_click();
|
|
#if defined TREZOR_MODEL_T
|
|
touch_click();
|
|
#elif defined TREZOR_MODEL_R
|
|
for (;;) {
|
|
button_read();
|
|
if (button_state_left() != 0 && button_state_right() != 0) {
|
|
break;
|
|
}
|
|
}
|
|
for (;;) {
|
|
button_read();
|
|
if (button_state_left() != 1 && button_state_right() != 1) {
|
|
break;
|
|
}
|
|
}
|
|
#else
|
|
#error Unknown Trezor model
|
|
#endif
|
|
}
|
|
|
|
ui_fadeout();
|
|
}
|
|
|
|
// mpu_config_firmware();
|
|
// jump_to_unprivileged(FIRMWARE_START + vhdr.hdrlen + IMAGE_HEADER_SIZE);
|
|
|
|
mpu_config_off();
|
|
jump_to(FIRMWARE_START + vhdr.hdrlen + IMAGE_HEADER_SIZE);
|
|
|
|
return 0;
|
|
}
|