/* * 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 STM32_HAL_H #include <string.h> #include "common.h" #include "display.h" #include "flash.h" #include "rand.h" #include "stm32.h" #include "supervise.h" #include "stm32f4xx_ll_utils.h" #ifdef RGB16 #define COLOR_FATAL_ERROR RGB16(0x7F, 0x00, 0x00) #else #define COLOR_FATAL_ERROR COLOR_BLACK #endif // from util.s extern void shutdown_privileged(void); void shutdown(void) { #ifdef USE_SVC_SHUTDOWN svc_shutdown(); #else // It won't work properly unless called from the privileged mode shutdown_privileged(); #endif } void __attribute__((noreturn)) __fatal_error(const char *expr, const char *msg, const char *file, int line, const char *func) { display_orientation(0); display_backlight(255); display_print_color(COLOR_WHITE, COLOR_FATAL_ERROR); display_printf("\nFATAL ERROR:\n"); if (expr) { display_printf("expr: %s\n", expr); } if (msg) { display_printf("msg : %s\n", msg); } if (file) { display_printf("file: %s:%d\n", file, line); } if (func) { display_printf("func: %s\n", func); } #ifdef SCM_REVISION const uint8_t *rev = (const uint8_t *)SCM_REVISION; display_printf("rev : %02x%02x%02x%02x%02x\n", rev[0], rev[1], rev[2], rev[3], rev[4]); #endif display_printf("\nPlease contact Trezor support.\n"); shutdown(); for (;;) ; } void __attribute__((noreturn)) error_shutdown(const char *line1, const char *line2, const char *line3, const char *line4) { display_orientation(0); #ifdef TREZOR_FONT_NORMAL_ENABLE display_clear(); display_bar(0, 0, DISPLAY_RESX, DISPLAY_RESY, COLOR_FATAL_ERROR); int y = 32; if (line1) { display_text(8, y, line1, -1, FONT_NORMAL, COLOR_WHITE, COLOR_FATAL_ERROR); y += 32; } if (line2) { display_text(8, y, line2, -1, FONT_NORMAL, COLOR_WHITE, COLOR_FATAL_ERROR); y += 32; } if (line3) { display_text(8, y, line3, -1, FONT_NORMAL, COLOR_WHITE, COLOR_FATAL_ERROR); y += 32; } if (line4) { display_text(8, y, line4, -1, FONT_NORMAL, COLOR_WHITE, COLOR_FATAL_ERROR); y += 32; } y += 32; display_text(8, y, "Please unplug the device.", -1, FONT_NORMAL, COLOR_WHITE, COLOR_FATAL_ERROR); #else display_print_color(COLOR_WHITE, COLOR_FATAL_ERROR); if (line1) { display_printf("%s\n", line1); } if (line2) { display_printf("%s\n", line2); } if (line3) { display_printf("%s\n", line3); } if (line4) { display_printf("%s\n", line4); } display_printf("\nPlease unplug the device.\n"); #endif display_backlight(255); shutdown(); for (;;) ; } #ifndef NDEBUG void __assert_func(const char *file, int line, const char *func, const char *expr) { __fatal_error(expr, "assert failed", file, line, func); } #endif void hal_delay(uint32_t ms) { HAL_Delay(ms); } uint32_t hal_ticks_ms() { return HAL_GetTick(); } // reference RM0090 section 35.12.1 Figure 413 #define USB_OTG_HS_DATA_FIFO_RAM (USB_OTG_HS_PERIPH_BASE + 0x20000U) #define USB_OTG_HS_DATA_FIFO_SIZE (4096U) void clear_otg_hs_memory(void) { // use the HAL version due to section 2.1.6 of STM32F42xx Errata sheet __HAL_RCC_USB_OTG_HS_CLK_ENABLE(); // enable USB_OTG_HS peripheral clock so // that the peripheral memory is // accessible memset_reg( (volatile void *)USB_OTG_HS_DATA_FIFO_RAM, (volatile void *)(USB_OTG_HS_DATA_FIFO_RAM + USB_OTG_HS_DATA_FIFO_SIZE), 0); __HAL_RCC_USB_OTG_HS_CLK_DISABLE(); // disable USB OTG_HS peripheral clock as // the peripheral is not needed right now } uint32_t __stack_chk_guard = 0; void __attribute__((noreturn)) __stack_chk_fail(void) { error_shutdown("Internal error", "(SS)", NULL, NULL); } uint8_t HW_ENTROPY_DATA[HW_ENTROPY_LEN]; void collect_hw_entropy(void) { // collect entropy from UUID uint32_t w = LL_GetUID_Word0(); memcpy(HW_ENTROPY_DATA, &w, 4); w = LL_GetUID_Word1(); memcpy(HW_ENTROPY_DATA + 4, &w, 4); w = LL_GetUID_Word2(); memcpy(HW_ENTROPY_DATA + 8, &w, 4); // set entropy in the OTP randomness block if (secfalse == flash_otp_is_locked(FLASH_OTP_BLOCK_RANDOMNESS)) { uint8_t entropy[FLASH_OTP_BLOCK_SIZE]; random_buffer(entropy, FLASH_OTP_BLOCK_SIZE); ensure(flash_otp_write(FLASH_OTP_BLOCK_RANDOMNESS, 0, entropy, FLASH_OTP_BLOCK_SIZE), NULL); ensure(flash_otp_lock(FLASH_OTP_BLOCK_RANDOMNESS), NULL); } // collect entropy from OTP randomness block ensure(flash_otp_read(FLASH_OTP_BLOCK_RANDOMNESS, 0, HW_ENTROPY_DATA + 12, FLASH_OTP_BLOCK_SIZE), NULL); } // this function resets settings changed in one layer (bootloader/firmware), // which might be incompatible with the other layers older versions, // where this setting might be unknown void ensure_compatible_settings(void) { #ifdef TREZOR_MODEL_T display_set_big_endian(); set_core_clock(CLOCK_168_MHZ); display_set_slow_pwm(); #endif }