mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-12-23 06:48:16 +00:00
268 lines
6.3 KiB
C
268 lines
6.3 KiB
C
/*
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* This file is part of the Trezor project, https://trezor.io/
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*
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* Copyright (c) SatoshiLabs
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include STM32_HAL_H
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#include <string.h>
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#include "applet.h"
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#include "bl_check.h"
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#include "board_capabilities.h"
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#include "bootutils.h"
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#include "button.h"
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#include "consumption_mask.h"
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#include "display.h"
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#include "dma2d.h"
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#include "entropy.h"
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#include "haptic.h"
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#include "image.h"
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#include "irq.h"
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#include "memzero.h"
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#include "mpu.h"
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#include "optiga_commands.h"
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#include "optiga_transport.h"
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#include "random_delays.h"
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#include "rsod.h"
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#include "sdcard.h"
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#include "secret.h"
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#include "secure_aes.h"
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#include "system.h"
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#include "systick.h"
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#include "tamper.h"
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#include "touch.h"
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#include "unit_variant.h"
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#ifdef USE_OPTIGA
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#if !PYOPT
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#include <inttypes.h>
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#if 1 // color log
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#define OPTIGA_LOG_FORMAT \
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"%" PRIu32 " \x1b[35moptiga\x1b[0m \x1b[32mDEBUG\x1b[0m %s: "
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#else
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#define OPTIGA_LOG_FORMAT "%" PRIu32 " optiga DEBUG %s: "
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#endif
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static void optiga_log_hex(const char *prefix, const uint8_t *data,
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size_t data_size) {
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printf(OPTIGA_LOG_FORMAT, hal_ticks_ms() * 1000, prefix);
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for (size_t i = 0; i < data_size; i++) {
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printf("%02x", data[i]);
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}
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printf("\n");
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}
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#endif
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#endif
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void drivers_init() {
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#if defined TREZOR_MODEL_T
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set_core_clock(CLOCK_180_MHZ);
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#endif
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#ifdef STM32U5
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tamper_init();
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#endif
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random_delays_init();
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#ifdef RDI
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random_delays_start_rdi();
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#endif
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#ifdef SYSTEM_VIEW
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enable_systemview();
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#endif
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#ifdef USE_HASH_PROCESSOR
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hash_processor_init();
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#endif
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#ifdef USE_DMA2D
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dma2d_init();
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#endif
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display_init(DISPLAY_JUMP_BEHAVIOR);
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#ifdef STM32U5
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check_oem_keys();
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#endif
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parse_boardloader_capabilities();
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unit_variant_init();
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#ifdef STM32U5
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secure_aes_init();
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#endif
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#ifdef USE_OPTIGA
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uint8_t secret[SECRET_OPTIGA_KEY_LEN] = {0};
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secbool secret_ok = secret_optiga_get(secret);
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#endif
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entropy_init();
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#if PRODUCTION || BOOTLOADER_QA
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check_and_replace_bootloader();
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#endif
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#ifdef USE_BUTTON
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button_init();
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#endif
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#ifdef USE_RGB_LED
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rgb_led_init();
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#endif
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#ifdef USE_CONSUMPTION_MASK
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consumption_mask_init();
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#endif
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#ifdef USE_TOUCH
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touch_init();
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#endif
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#ifdef USE_SD_CARD
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sdcard_init();
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#endif
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#ifdef USE_HAPTIC
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haptic_init();
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#endif
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#ifdef USE_OPTIGA
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#if !PYOPT
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// command log is relatively quiet so we enable it in debug builds
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optiga_command_set_log_hex(optiga_log_hex);
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// transport log can be spammy, uncomment if you want it:
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// optiga_transport_set_log_hex(optiga_log_hex);
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#endif
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optiga_init();
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if (sectrue == secret_ok) {
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// If the shielded connection cannot be established, reset Optiga and
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// continue without it. In this case, OID_KEY_FIDO and OID_KEY_DEV cannot be
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// used, which means device and FIDO attestation will not work.
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if (optiga_sec_chan_handshake(secret, sizeof(secret)) != OPTIGA_SUCCESS) {
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optiga_soft_reset();
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}
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}
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memzero(secret, sizeof(secret));
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ensure(sectrue * (optiga_open_application() == OPTIGA_SUCCESS),
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"Cannot initialize optiga.");
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#endif
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}
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// defined in linker script
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extern uint32_t _codelen;
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extern uint32_t _coreapp_clear_ram_0_start;
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extern uint32_t _coreapp_clear_ram_0_size;
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extern uint32_t _coreapp_clear_ram_1_start;
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extern uint32_t _coreapp_clear_ram_1_size;
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#define KERNEL_SIZE (uint32_t) & _codelen
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// Initializes coreapp applet
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static void coreapp_init(applet_t *applet) {
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applet_header_t *coreapp_header =
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(applet_header_t *)COREAPP_CODE_ALIGN(KERNEL_START + KERNEL_SIZE);
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applet_layout_t coreapp_layout = {
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.data1_start = (uint32_t)&_coreapp_clear_ram_0_start,
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.data1_size = (uint32_t)&_coreapp_clear_ram_0_size,
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.data2_start = (uint32_t)&_coreapp_clear_ram_1_start,
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.data2_size = (uint32_t)&_coreapp_clear_ram_1_size,
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};
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applet_init(applet, coreapp_header, &coreapp_layout);
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}
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// Shows RSOD (Red Screen of Death)
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static void show_rsod(const systask_postmortem_t *pminfo) {
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#ifdef RSOD_IN_COREAPP
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applet_t coreapp;
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coreapp_init(&coreapp);
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// Reset and run the coreapp in RSOD mode
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if (applet_reset(&coreapp, 1, pminfo, sizeof(systask_postmortem_t))) {
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systask_yield_to(&coreapp.task);
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if (coreapp.task.pminfo.reason == TASK_TERM_REASON_EXIT) {
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// If the RSOD was shown successfully, proceed to shutdown
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secure_shutdown();
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}
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}
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#endif
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// If coreapp crashed, fallback to showing the error using a terminal
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rsod_terminal(pminfo);
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}
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// Initializes system in emergency mode and shows RSOD
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static void init_and_show_rsod(const systask_postmortem_t *pminfo) {
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// Initialize the system's core services
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// (If the kernel crashes in emergency mode, we are out of options
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// and show the RSOD without attempting to re-enter emergency mode)
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system_init(&rsod_terminal);
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// Initialize necessary drivers
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display_init(DISPLAY_RESET_CONTENT);
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// Show RSOD
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show_rsod(pminfo);
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// Wait for the user to manually power off the device
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secure_shutdown();
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}
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// Kernel panic handler
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// (may be called from interrupt context)
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static void kernel_panic(const systask_postmortem_t *pminfo) {
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// Since the system state is unreliable, enter emergency mode
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// and show the RSOD.
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system_emergency_rescue(&init_and_show_rsod, pminfo);
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// The previous function call never returns
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}
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int main(void) {
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// Initialize system's core services
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system_init(&kernel_panic);
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// Initialize hardware drivers
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drivers_init();
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// Initialize coreapp task
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applet_t coreapp;
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coreapp_init(&coreapp);
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// Reset and run the coreapp
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if (!applet_reset(&coreapp, 0, NULL, 0)) {
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error_shutdown("Cannot start coreapp");
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}
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systask_yield_to(&coreapp.task);
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// Coreapp crashed, show RSOD
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show_rsod(&coreapp.task.pminfo);
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// Wait for the user to manually power off the device
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secure_shutdown();
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return 0;
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}
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