kopia lustrzana https://github.com/espressif/esp-idf
80 wiersze
2.2 KiB
C
80 wiersze
2.2 KiB
C
/*
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* SPDX-FileCopyrightText: 2017-2021 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 "esp_efuse.h"
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#include "esp_efuse_utility.h"
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#include "esp_efuse_table.h"
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#include "stdlib.h"
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#include "esp_types.h"
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#include "esp32c3/rom/efuse.h"
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#include "assert.h"
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#include "esp_err.h"
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#include "esp_log.h"
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#include "soc/efuse_periph.h"
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#include "bootloader_random.h"
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#include "sys/param.h"
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const static char *TAG = "efuse";
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// Contains functions that provide access to efuse fields which are often used in IDF.
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// Returns chip version from efuse
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uint8_t esp_efuse_get_chip_ver(void)
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{
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uint32_t chip_ver = 0;
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esp_efuse_read_field_blob(ESP_EFUSE_WAFER_VERSION, &chip_ver, ESP_EFUSE_WAFER_VERSION[0]->bit_count);
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return chip_ver;
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}
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// Returns chip package from efuse
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uint32_t esp_efuse_get_pkg_ver(void)
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{
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uint32_t pkg_ver = 0;
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esp_efuse_read_field_blob(ESP_EFUSE_PKG_VERSION, &pkg_ver, ESP_EFUSE_PKG_VERSION[0]->bit_count);
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return pkg_ver;
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}
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esp_err_t esp_efuse_set_rom_log_scheme(esp_efuse_rom_log_scheme_t log_scheme)
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{
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int cur_log_scheme = 0;
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esp_efuse_read_field_blob(ESP_EFUSE_UART_PRINT_CONTROL, &cur_log_scheme, 2);
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if (!cur_log_scheme) { // not burned yet
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return esp_efuse_write_field_blob(ESP_EFUSE_UART_PRINT_CONTROL, &log_scheme, 2);
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} else {
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return ESP_ERR_INVALID_STATE;
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}
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}
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void esp_efuse_write_random_key(uint32_t blk_wdata0_reg)
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{
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uint32_t buf[8];
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uint8_t raw[24];
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bootloader_fill_random(buf, sizeof(buf));
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ESP_LOGV(TAG, "Writing random values to address 0x%08x", blk_wdata0_reg);
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for (int i = 0; i < 8; i++) {
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ESP_LOGV(TAG, "EFUSE_BLKx_WDATA%d_REG = 0x%08x", i, buf[i]);
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REG_WRITE(blk_wdata0_reg + 4 * i, buf[i]);
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}
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bzero(buf, sizeof(buf));
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bzero(raw, sizeof(raw));
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}
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esp_err_t esp_efuse_disable_rom_download_mode(void)
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{
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return esp_efuse_write_field_bit(ESP_EFUSE_DIS_DOWNLOAD_MODE);
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}
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esp_err_t esp_efuse_enable_rom_secure_download_mode(void)
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{
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if (esp_efuse_read_field_bit(ESP_EFUSE_DIS_DOWNLOAD_MODE)) {
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return ESP_ERR_INVALID_STATE;
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}
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return esp_efuse_write_field_bit(ESP_EFUSE_ENABLE_SECURITY_DOWNLOAD);
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}
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