mirror of
https://github.com/espressif/esp-idf.git
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99 lines
3.1 KiB
C
99 lines
3.1 KiB
C
// Copyright 2015-2019 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <string.h>
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#include <stdint.h>
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#include "sdkconfig.h"
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#include "esp_log.h"
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#include "bootloader_init.h"
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#include "bootloader_flash.h"
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#include "bootloader_flash_config.h"
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#include "bootloader_random.h"
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#include "bootloader_clock.h"
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#include "bootloader_common.h"
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#include "esp_flash_encrypt.h"
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#include "hal/timer_ll.h"
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#include "soc/cpu.h"
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#include "soc/rtc.h"
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#include "soc/rtc_wdt.h"
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static const char *TAG = "boot";
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esp_image_header_t bootloader_image_hdr;
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void bootloader_clear_bss_section(void)
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{
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memset(&_bss_start, 0, (&_bss_end - &_bss_start) * sizeof(_bss_start));
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}
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esp_err_t bootloader_read_bootloader_header(void)
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{
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/* load bootloader image header */
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if (bootloader_flash_read(ESP_BOOTLOADER_OFFSET, &bootloader_image_hdr, sizeof(esp_image_header_t), true) != ESP_OK) {
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ESP_LOGE(TAG, "failed to load bootloader image header!");
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return ESP_FAIL;
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}
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return ESP_OK;
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}
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esp_err_t bootloader_check_bootloader_validity(void)
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{
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/* read chip revision from efuse */
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uint8_t revision = bootloader_common_get_chip_revision();
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ESP_LOGI(TAG, "chip revision: %d", revision);
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/* compare with the one set in bootloader image header */
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if (bootloader_common_check_chip_validity(&bootloader_image_hdr, ESP_IMAGE_BOOTLOADER) != ESP_OK) {
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return ESP_FAIL;
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}
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return ESP_OK;
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}
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void bootloader_config_wdt(void)
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{
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#ifdef CONFIG_BOOTLOADER_WDT_ENABLE
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ESP_LOGD(TAG, "Enabling RTCWDT(%d ms)", CONFIG_BOOTLOADER_WDT_TIME_MS);
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rtc_wdt_protect_off();
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rtc_wdt_disable();
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rtc_wdt_set_length_of_reset_signal(RTC_WDT_SYS_RESET_SIG, RTC_WDT_LENGTH_3_2us);
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rtc_wdt_set_length_of_reset_signal(RTC_WDT_CPU_RESET_SIG, RTC_WDT_LENGTH_3_2us);
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rtc_wdt_set_stage(RTC_WDT_STAGE0, RTC_WDT_STAGE_ACTION_RESET_RTC);
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rtc_wdt_set_time(RTC_WDT_STAGE0, CONFIG_BOOTLOADER_WDT_TIME_MS);
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rtc_wdt_enable();
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rtc_wdt_protect_on();
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#else /* disable watch dog */
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rtc_wdt_disable();
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#endif
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timer_ll_wdt_set_protect(&TIMERG0, false);
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timer_ll_wdt_flashboot_en(&TIMERG0, false);
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}
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void bootloader_enable_random(void)
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{
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ESP_LOGI(TAG, "Enabling RNG early entropy source...");
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bootloader_random_enable();
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}
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void bootloader_print_banner(void)
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{
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ESP_LOGI(TAG, "ESP-IDF %s 2nd stage bootloader", IDF_VER);
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ESP_LOGI(TAG, "compile time " __TIME__);
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}
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void __assert_func(const char *file, int line, const char *func, const char *expr)
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{
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ESP_LOGE(TAG, "Assert failed in %s, %s:%d (%s)", func, file, line, expr);
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while (1) {
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}
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}
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