2021-08-05 15:35:07 +00:00
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/*
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* SPDX-FileCopyrightText: 2015-2021 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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2019-10-30 03:19:22 +00:00
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#include <string.h>
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#include "sdkconfig.h"
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2020-07-13 13:57:24 +00:00
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#include "esp_rom_efuse.h"
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2019-10-30 03:19:22 +00:00
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#include "esp_system.h"
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#include "esp_efuse.h"
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#include "esp_efuse_table.h"
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/* esp_system.h APIs relating to MAC addresses */
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2021-03-12 06:05:17 +00:00
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#if CONFIG_ESP32_UNIVERSAL_MAC_ADDRESSES_FOUR || \
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CONFIG_ESP32S3_UNIVERSAL_MAC_ADDRESSES_FOUR || \
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CONFIG_ESP32C3_UNIVERSAL_MAC_ADDRESSES_FOUR
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#define MAC_ADDR_UNIVERSE_BT_OFFSET 2
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#else
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#define MAC_ADDR_UNIVERSE_BT_OFFSET 1
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#endif
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2021-07-14 10:00:51 +00:00
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#if CONFIG_IEEE802154_ENABLED
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#define ESP_MAC_ADDRESS_LEN 8
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#else
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#define ESP_MAC_ADDRESS_LEN 6
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#endif
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static const char *TAG = "system_api";
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2019-10-30 03:19:22 +00:00
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2021-07-14 10:00:51 +00:00
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static uint8_t base_mac_addr[ESP_MAC_ADDRESS_LEN] = { 0 };
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2019-10-30 03:19:22 +00:00
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esp_err_t esp_base_mac_addr_set(const uint8_t *mac)
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{
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if (mac == NULL) {
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ESP_LOGE(TAG, "Base MAC address is NULL");
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return ESP_ERR_INVALID_ARG;
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}
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if (mac[0] & 0x01) {
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ESP_LOGE(TAG, "Base MAC must be a unicast MAC");
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return ESP_ERR_INVALID_ARG;
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}
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2021-07-14 10:00:51 +00:00
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memcpy(base_mac_addr, mac, ESP_MAC_ADDRESS_LEN);
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2019-10-30 03:19:22 +00:00
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return ESP_OK;
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}
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esp_err_t esp_base_mac_addr_get(uint8_t *mac)
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{
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2021-07-19 10:16:42 +00:00
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if (mac == NULL) {
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return ESP_ERR_INVALID_ARG;
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}
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if (base_mac_addr[0] == 0 && memcmp(base_mac_addr, &base_mac_addr[1], ESP_MAC_ADDRESS_LEN - 1) == 0) {
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2020-01-10 09:46:46 +00:00
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ESP_LOGI(TAG, "Base MAC address is not set");
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2019-10-30 03:19:22 +00:00
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return ESP_ERR_INVALID_MAC;
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}
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2021-07-14 10:00:51 +00:00
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memcpy(mac, base_mac_addr, ESP_MAC_ADDRESS_LEN);
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2019-10-30 03:19:22 +00:00
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return ESP_OK;
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}
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esp_err_t esp_efuse_mac_get_custom(uint8_t *mac)
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{
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2020-07-29 14:03:46 +00:00
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#if !CONFIG_IDF_TARGET_ESP32
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2021-07-19 10:16:42 +00:00
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size_t size_bits = esp_efuse_get_field_size(ESP_EFUSE_USER_DATA_MAC_CUSTOM);
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assert((size_bits % 8) == 0);
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esp_err_t err = esp_efuse_read_field_blob(ESP_EFUSE_USER_DATA_MAC_CUSTOM, mac, size_bits);
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if (err != ESP_OK) {
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return err;
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}
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size_t size = size_bits / 8;
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if (mac[0] == 0 && memcmp(mac, &mac[1], size - 1) == 0) {
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ESP_LOGE(TAG, "eFuse MAC_CUSTOM is empty");
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return ESP_ERR_INVALID_MAC;
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}
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#if (ESP_MAC_ADDRESS_LEN == 8)
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2021-10-27 11:22:22 +00:00
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err = esp_efuse_read_field_blob(ESP_EFUSE_MAC_EXT, &mac[6], ESP_MAC_ADDRESS_LEN * 8 - size_bits);
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2021-07-19 10:16:42 +00:00
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if (err != ESP_OK) {
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2021-10-27 11:22:22 +00:00
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ESP_LOGE(TAG, "Reading MAC_EXT failed, error=%d", err);
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2021-07-19 10:16:42 +00:00
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return err;
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}
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#endif
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return ESP_OK;
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2019-10-30 03:19:22 +00:00
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#else
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uint8_t version;
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esp_efuse_read_field_blob(ESP_EFUSE_MAC_CUSTOM_VER, &version, 8);
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if (version != 1) {
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ESP_LOGE(TAG, "Base MAC address from BLK3 of EFUSE version error, version = %d", version);
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return ESP_ERR_INVALID_VERSION;
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}
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uint8_t efuse_crc;
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esp_efuse_read_field_blob(ESP_EFUSE_MAC_CUSTOM, mac, 48);
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esp_efuse_read_field_blob(ESP_EFUSE_MAC_CUSTOM_CRC, &efuse_crc, 8);
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2020-07-13 13:57:24 +00:00
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uint8_t calc_crc = esp_rom_efuse_mac_address_crc8(mac, 6);
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2019-10-30 03:19:22 +00:00
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if (efuse_crc != calc_crc) {
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ESP_LOGE(TAG, "Base MAC address from BLK3 of EFUSE CRC error, efuse_crc = 0x%02x; calc_crc = 0x%02x", efuse_crc, calc_crc);
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return ESP_ERR_INVALID_CRC;
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}
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return ESP_OK;
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2020-07-29 14:03:46 +00:00
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#endif
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2019-10-30 03:19:22 +00:00
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}
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2021-07-14 10:00:51 +00:00
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esp_err_t esp_efuse_mac_get_default(uint8_t *mac)
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2019-10-30 03:19:22 +00:00
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{
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2021-07-19 10:16:42 +00:00
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size_t size_bits = esp_efuse_get_field_size(ESP_EFUSE_MAC_FACTORY);
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assert((size_bits % 8) == 0);
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esp_err_t err = esp_efuse_read_field_blob(ESP_EFUSE_MAC_FACTORY, mac, size_bits);
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if (err != ESP_OK) {
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return err;
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2021-07-14 10:00:51 +00:00
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}
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2021-07-19 10:16:42 +00:00
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#if (ESP_MAC_ADDRESS_LEN == 8)
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2021-10-27 11:22:22 +00:00
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err = esp_efuse_read_field_blob(ESP_EFUSE_MAC_EXT, &mac[6], ESP_MAC_ADDRESS_LEN * 8 - size_bits);
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2019-10-30 03:19:22 +00:00
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if (err != ESP_OK) {
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2021-10-27 11:22:22 +00:00
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ESP_LOGE(TAG, "Reading MAC_EXT failed, error=%d", err);
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2019-10-30 03:19:22 +00:00
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return err;
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}
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2021-07-19 10:16:42 +00:00
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#endif
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2019-10-30 03:19:22 +00:00
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#ifdef CONFIG_IDF_TARGET_ESP32
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2020-07-29 14:03:46 +00:00
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// Only ESP32 has MAC CRC in efuse
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2019-10-30 03:19:22 +00:00
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uint8_t efuse_crc;
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esp_efuse_read_field_blob(ESP_EFUSE_MAC_FACTORY_CRC, &efuse_crc, 8);
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2020-07-13 13:57:24 +00:00
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uint8_t calc_crc = esp_rom_efuse_mac_address_crc8(mac, 6);
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2019-10-30 03:19:22 +00:00
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if (efuse_crc != calc_crc) {
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2021-07-14 10:00:51 +00:00
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// Small range of MAC addresses are accepted even if CRC is invalid.
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// These addresses are reserved for Espressif internal use.
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2019-10-30 03:19:22 +00:00
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uint32_t mac_high = ((uint32_t)mac[0] << 8) | mac[1];
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2020-10-20 14:12:28 +00:00
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uint32_t mac_low = ((uint32_t)mac[2] << 24) | ((uint32_t)mac[3] << 16) | ((uint32_t)mac[4] << 8) | mac[5];
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if (((mac_high & 0xFFFF) == 0x18fe) && (mac_low >= 0x346a85c7) && (mac_low <= 0x346a85f8)) {
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return ESP_OK;
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2019-10-30 03:19:22 +00:00
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} else {
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ESP_LOGE(TAG, "Base MAC address from BLK0 of EFUSE CRC error, efuse_crc = 0x%02x; calc_crc = 0x%02x", efuse_crc, calc_crc);
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abort();
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}
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}
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#endif // CONFIG_IDF_TARGET_ESP32
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return ESP_OK;
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}
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2021-07-14 10:00:51 +00:00
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esp_err_t esp_derive_local_mac(uint8_t *local_mac, const uint8_t *universal_mac)
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2019-10-30 03:19:22 +00:00
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{
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if (local_mac == NULL || universal_mac == NULL) {
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ESP_LOGE(TAG, "mac address param is NULL");
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return ESP_ERR_INVALID_ARG;
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}
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memcpy(local_mac, universal_mac, 6);
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2021-04-22 02:09:54 +00:00
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const unsigned UL_BIT = 0x2;
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local_mac[0] |= UL_BIT;
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if (local_mac[0] == universal_mac[0]) {
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// universal_mac was already local, so flip this bit instead
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// (this is kept to be compatible with the previous behaviour of this function)
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local_mac[0] ^= 0x4;
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2019-10-30 03:19:22 +00:00
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}
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return ESP_OK;
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}
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2021-07-14 10:00:51 +00:00
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esp_err_t esp_read_mac(uint8_t *mac, esp_mac_type_t type)
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2019-10-30 03:19:22 +00:00
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{
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2021-07-14 10:00:51 +00:00
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uint8_t efuse_mac[ESP_MAC_ADDRESS_LEN];
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2019-10-30 03:19:22 +00:00
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if (mac == NULL) {
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ESP_LOGE(TAG, "mac address param is NULL");
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return ESP_ERR_INVALID_ARG;
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}
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2021-07-14 10:00:51 +00:00
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#if CONFIG_IEEE802154_ENABLED
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if (type < ESP_MAC_WIFI_STA || type > ESP_MAC_IEEE802154) {
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#else
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2019-10-30 03:19:22 +00:00
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if (type < ESP_MAC_WIFI_STA || type > ESP_MAC_ETH) {
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2021-07-14 10:00:51 +00:00
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#endif
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2019-10-30 03:19:22 +00:00
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ESP_LOGE(TAG, "mac type is incorrect");
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return ESP_ERR_INVALID_ARG;
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}
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2020-01-10 09:46:46 +00:00
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// if base mac address is not set, read one from EFUSE and then write back
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2019-10-30 03:19:22 +00:00
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if (esp_base_mac_addr_get(efuse_mac) != ESP_OK) {
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2020-01-10 09:46:46 +00:00
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ESP_LOGI(TAG, "read default base MAC address from EFUSE");
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2019-10-30 03:19:22 +00:00
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esp_efuse_mac_get_default(efuse_mac);
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2020-01-10 09:46:46 +00:00
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esp_base_mac_addr_set(efuse_mac);
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2019-10-30 03:19:22 +00:00
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}
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switch (type) {
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case ESP_MAC_WIFI_STA:
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memcpy(mac, efuse_mac, 6);
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break;
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case ESP_MAC_WIFI_SOFTAP:
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2020-01-10 09:46:46 +00:00
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#if CONFIG_ESP_MAC_ADDR_UNIVERSE_WIFI_AP
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memcpy(mac, efuse_mac, 6);
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2021-07-14 10:00:51 +00:00
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// as a result of some esp32s2 chips burned with one MAC address by mistake,
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// there are some MAC address are reserved for this bug fix.
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// related mistake MAC address is 0x7cdfa1003000~0x7cdfa1005fff,
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// reserved MAC address is 0x7cdfa1020000~0x7cdfa1022fff (MAC address + 0x1d000).
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2020-03-04 03:15:52 +00:00
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#ifdef CONFIG_IDF_TARGET_ESP32S2
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uint8_t mac_begin[6] = { 0x7c, 0xdf, 0xa1, 0x00, 0x30, 0x00 };
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uint8_t mac_end[6] = { 0x7c, 0xdf, 0xa1, 0x00, 0x5f, 0xff };
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2021-07-14 10:00:51 +00:00
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if (memcmp(mac, mac_begin, 6) >= 0 && memcmp(mac_end, mac, 6) >= 0 ) {
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2020-11-10 07:40:01 +00:00
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mac[3] += 0x02; // contain carry bit
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2020-03-04 03:15:52 +00:00
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mac[4] += 0xd0;
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2020-03-17 13:31:32 +00:00
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} else {
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mac[5] += 1;
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2020-03-04 03:15:52 +00:00
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}
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#else
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2020-01-10 09:46:46 +00:00
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mac[5] += 1;
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2020-03-04 03:15:52 +00:00
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#endif // IDF_TARGET_ESP32S2
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2020-01-10 09:46:46 +00:00
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#else
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esp_derive_local_mac(mac, efuse_mac);
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2021-04-22 02:11:09 +00:00
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#endif // CONFIG_ESP_MAC_ADDR_UNIVERSE_WIFI_AP
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2019-10-30 03:19:22 +00:00
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break;
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case ESP_MAC_BT:
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2020-01-10 09:46:46 +00:00
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#if CONFIG_ESP_MAC_ADDR_UNIVERSE_BT
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2020-05-25 03:57:37 +00:00
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memcpy(mac, efuse_mac, 6);
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2021-07-14 10:00:51 +00:00
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#if !CONFIG_IDF_TARGET_ESP32H2
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// esp32h2 chips do not have wifi module, so the mac address do not need to add the BT offset
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2021-03-12 06:05:17 +00:00
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mac[5] += MAC_ADDR_UNIVERSE_BT_OFFSET;
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2021-07-14 10:00:51 +00:00
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#endif //!CONFIG_IDF_TARGET_ESP32H2
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2021-04-22 02:11:09 +00:00
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#else
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return ESP_ERR_NOT_SUPPORTED;
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#endif // CONFIG_ESP_MAC_ADDR_UNIVERSE_BT
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2019-10-30 03:19:22 +00:00
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break;
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case ESP_MAC_ETH:
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2020-01-10 09:46:46 +00:00
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#if CONFIG_ESP_MAC_ADDR_UNIVERSE_ETH
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memcpy(mac, efuse_mac, 6);
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mac[5] += 3;
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#else
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efuse_mac[5] += 1;
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esp_derive_local_mac(mac, efuse_mac);
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2021-04-22 02:11:09 +00:00
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#endif // CONFIG_ESP_MAC_ADDR_UNIVERSE_ETH
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2019-10-30 03:19:22 +00:00
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break;
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2021-07-14 10:00:51 +00:00
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#if CONFIG_IEEE802154_ENABLED
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case ESP_MAC_IEEE802154:
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memcpy(mac, efuse_mac, 8);
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break;
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#endif
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2019-10-30 03:19:22 +00:00
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default:
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2020-01-10 09:46:46 +00:00
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ESP_LOGE(TAG, "unsupported mac type");
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2019-10-30 03:19:22 +00:00
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break;
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}
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return ESP_OK;
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}
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