mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-12-23 14:58:09 +00:00
383 lines
12 KiB
C
383 lines
12 KiB
C
#include <string.h>
|
|
#include <sys/types.h>
|
|
|
|
#include "common.h"
|
|
#include "image.h"
|
|
#include "flash.h"
|
|
#include "mini_printf.h"
|
|
#include "rng.h"
|
|
#include "secbool.h"
|
|
#include "touch.h"
|
|
#include "usb.h"
|
|
#include "version.h"
|
|
|
|
#include "bootui.h"
|
|
#include "messages.h"
|
|
|
|
const uint8_t BOOTLOADER_KEY_M = 2;
|
|
const uint8_t BOOTLOADER_KEY_N = 3;
|
|
static const uint8_t * const BOOTLOADER_KEYS[] = {
|
|
#if PRODUCTION
|
|
(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",
|
|
#else
|
|
(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",
|
|
#endif
|
|
};
|
|
|
|
static void usb_init_all(void) {
|
|
|
|
static const usb_dev_info_t dev_info = {
|
|
.vendor_id = 0x1209,
|
|
.product_id = 0x53C0,
|
|
.release_num = 0x0200,
|
|
.manufacturer = "SatoshiLabs",
|
|
.product = "TREZOR Bootloader",
|
|
.serial_number = "",
|
|
.configuration = "",
|
|
.interface = "TREZOR Interface",
|
|
};
|
|
|
|
static uint8_t rx_buffer[USB_PACKET_SIZE];
|
|
|
|
#if USE_WEBUSB
|
|
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,
|
|
};
|
|
#else
|
|
static const uint8_t hid_report_desc[] = {
|
|
0x06, 0x00, 0xff, // USAGE_PAGE (Vendor Defined)
|
|
0x09, 0x01, // USAGE (1)
|
|
0xa1, 0x01, // COLLECTION (Application)
|
|
0x09, 0x20, // USAGE (Input Report Data)
|
|
0x15, 0x00, // LOGICAL_MINIMUM (0)
|
|
0x26, 0xff, 0x00, // LOGICAL_MAXIMUM (255)
|
|
0x75, 0x08, // REPORT_SIZE (8)
|
|
0x95, 0x40, // REPORT_COUNT (64)
|
|
0x81, 0x02, // INPUT (Data,Var,Abs)
|
|
0x09, 0x21, // USAGE (Output Report Data)
|
|
0x15, 0x00, // LOGICAL_MINIMUM (0)
|
|
0x26, 0xff, 0x00, // LOGICAL_MAXIMUM (255)
|
|
0x75, 0x08, // REPORT_SIZE (8)
|
|
0x95, 0x40, // REPORT_COUNT (64)
|
|
0x91, 0x02, // OUTPUT (Data,Var,Abs)
|
|
0xc0 // END_COLLECTION
|
|
};
|
|
static const usb_hid_info_t hid_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,
|
|
.report_desc_len = sizeof(hid_report_desc),
|
|
.report_desc = hid_report_desc,
|
|
};
|
|
#endif
|
|
|
|
usb_init(&dev_info);
|
|
|
|
#if USE_WEBUSB
|
|
ensure(usb_webusb_add(&webusb_info), NULL);
|
|
#else
|
|
ensure(usb_hid_add(&hid_info), NULL);
|
|
#endif
|
|
|
|
usb_start();
|
|
}
|
|
|
|
static secbool bootloader_usb_loop(const vendor_header * const vhdr, const image_header * const hdr)
|
|
{
|
|
usb_init_all();
|
|
|
|
uint8_t buf[USB_PACKET_SIZE];
|
|
|
|
for (;;) {
|
|
#if USE_WEBUSB
|
|
int r = usb_webusb_read_blocking(USB_IFACE_NUM, buf, USB_PACKET_SIZE, USB_TIMEOUT);
|
|
#else
|
|
int r = usb_hid_read_blocking(USB_IFACE_NUM, buf, USB_PACKET_SIZE, USB_TIMEOUT);
|
|
#endif
|
|
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_info(secfalse, 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;
|
|
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);
|
|
}
|
|
|
|
#define OTP_BLOCK_VENDOR_KEYS_LOCK 2
|
|
|
|
static secbool check_vendor_keys_lock(const vendor_header * const vhdr) {
|
|
uint8_t lock[FLASH_OTP_BLOCK_SIZE];
|
|
ensure(flash_otp_read(OTP_BLOCK_VENDOR_KEYS_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_keys_hash(vhdr, hash);
|
|
return sectrue * (0 == memcmp(lock, hash, 32));
|
|
}
|
|
|
|
// protection against bootloader downgrade
|
|
|
|
#if PRODUCTION
|
|
|
|
#define OTP_BLOCK_BOOTLOADER_VERSION 1
|
|
|
|
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(OTP_BLOCK_BOOTLOADER_VERSION, 0, bits, FLASH_OTP_BLOCK_SIZE), NULL);
|
|
|
|
uint8_t bits2[FLASH_OTP_BLOCK_SIZE];
|
|
ensure(flash_otp_read(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)
|
|
{
|
|
main_start:
|
|
#if PRODUCTION
|
|
check_bootloader_version();
|
|
#endif
|
|
|
|
touch_init();
|
|
|
|
// delay to detect touch
|
|
uint32_t touched = 0;
|
|
for (int i = 0; i < 100; i++) {
|
|
touched = touch_read();
|
|
if (touched) {
|
|
break;
|
|
}
|
|
hal_delay(1);
|
|
}
|
|
|
|
vendor_header vhdr;
|
|
image_header hdr;
|
|
secbool firmware_present;
|
|
|
|
// detect whether the devices contains a firmware
|
|
|
|
firmware_present = load_vendor_header_keys((const uint8_t *)FIRMWARE_START, &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);
|
|
}
|
|
|
|
// start the bootloader if no firmware found ...
|
|
if (firmware_present != sectrue) {
|
|
// show intro animation
|
|
|
|
// no ui_fadeout(); - we already start from black screen
|
|
ui_screen_first();
|
|
ui_fadein();
|
|
|
|
hal_delay(1000);
|
|
|
|
ui_fadeout();
|
|
ui_screen_second();
|
|
ui_fadein();
|
|
|
|
hal_delay(1000);
|
|
|
|
ui_fadeout();
|
|
ui_screen_third();
|
|
ui_fadein();
|
|
|
|
// and start the usb loop
|
|
if (bootloader_usb_loop(NULL, NULL) != sectrue) {
|
|
return 1;
|
|
}
|
|
} else
|
|
// ... or if user touched the screen on start
|
|
if (touched) {
|
|
// show firmware info with connect buttons
|
|
|
|
// no ui_fadeout(); - we already start from black screen
|
|
ui_screen_info(sectrue, &vhdr, &hdr);
|
|
ui_fadein();
|
|
|
|
for (;;) {
|
|
int response = ui_user_input(INPUT_CONFIRM | INPUT_CANCEL | INPUT_INFO);
|
|
ui_fadeout();
|
|
|
|
// if cancel was pressed -> restart
|
|
if (INPUT_CANCEL == response) {
|
|
goto main_start;
|
|
}
|
|
|
|
// if confirm was pressed -> jump out
|
|
if (INPUT_CONFIRM == response) {
|
|
// show firmware info without connect buttons
|
|
ui_screen_info(secfalse, &vhdr, &hdr);
|
|
ui_fadein();
|
|
break;
|
|
}
|
|
|
|
// if info icon was pressed -> show fingerprint
|
|
if (INPUT_INFO == response) {
|
|
// show fingerprint
|
|
ui_screen_info_fingerprint(&hdr);
|
|
ui_fadein();
|
|
while (INPUT_LONG_CONFIRM != ui_user_input(INPUT_LONG_CONFIRM)) { }
|
|
ui_fadeout();
|
|
ui_screen_info(sectrue, &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_keys_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;
|
|
while (delay > 0) {
|
|
ui_screen_boot_wait(delay);
|
|
hal_delay(1000);
|
|
delay--;
|
|
}
|
|
|
|
if ((vhdr.vtrust & VTRUST_CLICK) == 0) {
|
|
ui_screen_boot_click();
|
|
touch_click();
|
|
}
|
|
|
|
ui_fadeout();
|
|
}
|
|
|
|
jump_to(FIRMWARE_START + vhdr.hdrlen + IMAGE_HEADER_SIZE);
|
|
|
|
return 0;
|
|
}
|