kopia lustrzana https://github.com/espressif/esp-idf
113 wiersze
3.8 KiB
C
113 wiersze
3.8 KiB
C
/*
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* SPDX-FileCopyrightText: 2015-2024 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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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_attr.h"
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#include "esp_log.h"
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#include "bootloader_init.h"
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#include "bootloader_flash_priv.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_cpu.h"
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#include "soc/rtc.h"
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#include "hal/wdt_hal.h"
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#include "hal/efuse_hal.h"
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#include "esp_bootloader_desc.h"
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static const char *TAG = "boot";
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#if !CONFIG_APP_BUILD_TYPE_RAM
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esp_image_header_t WORD_ALIGNED_ATTR bootloader_image_hdr;
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#endif
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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_EARLY_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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unsigned int revision = efuse_hal_chip_revision();
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unsigned int major = revision / 100;
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unsigned int minor = revision % 100;
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ESP_EARLY_LOGI(TAG, "chip revision: v%d.%d", major, minor);
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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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/*
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* At this point, the flashboot protection of RWDT and MWDT0 will have been
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* automatically enabled. We can disable flashboot protection as it's not
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* needed anymore. If configured to do so, we also initialize the RWDT to
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* protect the remainder of the bootloader process.
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*/
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//Disable RWDT flashboot protection.
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wdt_hal_context_t rwdt_ctx = RWDT_HAL_CONTEXT_DEFAULT();
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wdt_hal_write_protect_disable(&rwdt_ctx);
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wdt_hal_set_flashboot_en(&rwdt_ctx, false);
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wdt_hal_write_protect_enable(&rwdt_ctx);
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#ifdef CONFIG_BOOTLOADER_WDT_ENABLE
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//Initialize and start RWDT to protect the for bootloader if configured to do so
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ESP_EARLY_LOGD(TAG, "Enabling RTCWDT(%d ms)", CONFIG_BOOTLOADER_WDT_TIME_MS);
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wdt_hal_init(&rwdt_ctx, WDT_RWDT, 0, false);
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uint32_t stage_timeout_ticks = (uint32_t)((uint64_t)CONFIG_BOOTLOADER_WDT_TIME_MS * rtc_clk_slow_freq_get_hz() / 1000);
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wdt_hal_write_protect_disable(&rwdt_ctx);
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wdt_hal_config_stage(&rwdt_ctx, WDT_STAGE0, stage_timeout_ticks, WDT_STAGE_ACTION_RESET_RTC);
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wdt_hal_enable(&rwdt_ctx);
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wdt_hal_write_protect_enable(&rwdt_ctx);
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#endif
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//Disable MWDT0 flashboot protection. But only after we've enabled the RWDT first so that there's not gap in WDT protection.
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wdt_hal_context_t mwdt_ctx = {.inst = WDT_MWDT0, .mwdt_dev = &TIMERG0};
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wdt_hal_write_protect_disable(&mwdt_ctx);
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wdt_hal_set_flashboot_en(&mwdt_ctx, false);
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wdt_hal_write_protect_enable(&mwdt_ctx);
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}
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void bootloader_enable_random(void)
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{
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ESP_EARLY_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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if (CONFIG_BOOTLOADER_LOG_LEVEL >= ESP_LOG_INFO) {
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const esp_bootloader_desc_t *desc = esp_bootloader_get_description();
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ESP_EARLY_LOGI(TAG, "ESP-IDF %s 2nd stage bootloader", desc->idf_ver);
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#ifdef CONFIG_BOOTLOADER_COMPILE_TIME_DATE
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ESP_EARLY_LOGI(TAG, "compile time %s", desc->date_time);
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#endif
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}
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#if CONFIG_ESP_SYSTEM_SINGLE_CORE_MODE
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#if (SOC_CPU_CORES_NUM > 1)
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ESP_EARLY_LOGW(TAG, "Unicore bootloader");
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#endif
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#else
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ESP_EARLY_LOGI(TAG, "Multicore bootloader");
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#endif
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}
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