378 lines
10 KiB
C
378 lines
10 KiB
C
// Copyright 2013-2016 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 "esp_system.h"
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#include "esp_attr.h"
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#include "esp_wifi.h"
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#include "esp_wifi_internal.h"
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#include "esp_log.h"
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#include "sdkconfig.h"
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#include "rom/efuse.h"
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#include "rom/cache.h"
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#include "rom/uart.h"
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#include "soc/dport_reg.h"
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#include "soc/efuse_reg.h"
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#include "soc/rtc_cntl_reg.h"
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#include "soc/timer_group_reg.h"
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#include "soc/timer_group_struct.h"
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#include "soc/cpu.h"
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#include "soc/rtc.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "freertos/xtensa_api.h"
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static const char* TAG = "system_api";
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static uint8_t base_mac_addr[6] = { 0 };
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void system_init()
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{
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}
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esp_err_t esp_base_mac_addr_set(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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abort();
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}
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memcpy(base_mac_addr, mac, 6);
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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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uint8_t null_mac[6] = {0};
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if (memcmp(base_mac_addr, null_mac, 6) == 0) {
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ESP_LOGI(TAG, "Base MAC address is not set, read default base MAC address from BLK0 of EFUSE");
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return ESP_ERR_INVALID_MAC;
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}
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memcpy(mac, base_mac_addr, 6);
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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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uint32_t mac_low;
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uint32_t mac_high;
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uint8_t efuse_crc;
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uint8_t calc_crc;
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uint8_t version = REG_READ(EFUSE_BLK3_RDATA5_REG) >> 24;
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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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mac_low = REG_READ(EFUSE_BLK3_RDATA1_REG);
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mac_high = REG_READ(EFUSE_BLK3_RDATA0_REG);
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mac[0] = mac_high >> 8;
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mac[1] = mac_high >> 16;
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mac[2] = mac_high >> 24;
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mac[3] = mac_low;
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mac[4] = mac_low >> 8;
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mac[5] = mac_low >> 16;
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efuse_crc = mac_high;
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calc_crc = esp_crc8(mac, 6);
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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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}
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esp_err_t esp_efuse_mac_get_default(uint8_t* mac)
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{
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uint32_t mac_low;
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uint32_t mac_high;
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uint8_t efuse_crc;
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uint8_t calc_crc;
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mac_low = REG_READ(EFUSE_BLK0_RDATA1_REG);
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mac_high = REG_READ(EFUSE_BLK0_RDATA2_REG);
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mac[0] = mac_high >> 8;
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mac[1] = mac_high;
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mac[2] = mac_low >> 24;
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mac[3] = mac_low >> 16;
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mac[4] = mac_low >> 8;
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mac[5] = mac_low;
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efuse_crc = mac_high >> 16;
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calc_crc = esp_crc8(mac, 6);
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if (efuse_crc != calc_crc) {
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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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if ((mac_high & 0xFFFF) == 0x18fe) {
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if ((mac_low >= 0x346a85c7) && (mac_low <= 0x346a85f8)) {
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return ESP_OK;
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}
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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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return ESP_OK;
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}
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esp_err_t system_efuse_read_mac(uint8_t *mac) __attribute__((alias("esp_efuse_mac_get_default")));
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esp_err_t esp_efuse_read_mac(uint8_t *mac) __attribute__((alias("esp_efuse_mac_get_default")));
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esp_err_t esp_derive_mac(uint8_t* local_mac, const uint8_t* universal_mac)
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{
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uint8_t idx;
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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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for (idx = 0; idx < 64; idx++) {
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local_mac[0] = universal_mac[0] | 0x02;
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local_mac[0] ^= idx << 2;
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if (memcmp(local_mac, universal_mac, 6)) {
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break;
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}
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}
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return ESP_OK;
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}
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esp_err_t esp_read_mac(uint8_t* mac, esp_mac_type_t type)
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{
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uint8_t efuse_mac[6];
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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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if (type < ESP_MAC_WIFI_STA || type > ESP_MAC_ETH) {
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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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_Static_assert(UNIVERSAL_MAC_ADDR_NUM == FOUR_UNIVERSAL_MAC_ADDR \
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|| UNIVERSAL_MAC_ADDR_NUM == TWO_UNIVERSAL_MAC_ADDR, \
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"incorrect NUM_MAC_ADDRESS_FROM_EFUSE value");
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if (esp_base_mac_addr_get(efuse_mac) != ESP_OK) {
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esp_efuse_mac_get_default(efuse_mac);
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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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if (UNIVERSAL_MAC_ADDR_NUM == FOUR_UNIVERSAL_MAC_ADDR) {
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memcpy(mac, efuse_mac, 6);
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mac[5] += 1;
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}
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else if (UNIVERSAL_MAC_ADDR_NUM == TWO_UNIVERSAL_MAC_ADDR) {
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esp_derive_mac(mac, efuse_mac);
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}
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break;
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case ESP_MAC_BT:
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memcpy(mac, efuse_mac, 6);
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if (UNIVERSAL_MAC_ADDR_NUM == FOUR_UNIVERSAL_MAC_ADDR) {
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mac[5] += 2;
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}
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else if (UNIVERSAL_MAC_ADDR_NUM == TWO_UNIVERSAL_MAC_ADDR) {
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mac[5] += 1;
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}
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break;
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case ESP_MAC_ETH:
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if (UNIVERSAL_MAC_ADDR_NUM == FOUR_UNIVERSAL_MAC_ADDR) {
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memcpy(mac, efuse_mac, 6);
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mac[5] += 3;
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}
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else if (UNIVERSAL_MAC_ADDR_NUM == TWO_UNIVERSAL_MAC_ADDR) {
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efuse_mac[5] += 1;
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esp_derive_mac(mac, efuse_mac);
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}
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break;
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default:
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ESP_LOGW(TAG, "incorrect mac type");
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break;
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}
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return ESP_OK;
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}
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void esp_restart_noos() __attribute__ ((noreturn));
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/* Dummy function to be used instead of esp_wifi_stop if WiFi stack is not
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* linked in (even though CONFIG_WIFI_ENABLED is set).
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*/
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esp_err_t wifi_stop_noop()
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{
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return ESP_OK;
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}
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esp_err_t esp_wifi_stop(void) __attribute((weak, alias("wifi_stop_noop")));
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void IRAM_ATTR esp_restart(void)
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{
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#ifdef CONFIG_WIFI_ENABLED
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esp_wifi_stop();
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#endif
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// Disable scheduler on this core.
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vTaskSuspendAll();
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esp_restart_noos();
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}
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/* "inner" restart function for after RTOS, interrupts & anything else on this
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* core are already stopped. Stalls other core, resets hardware,
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* triggers restart.
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*/
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void IRAM_ATTR esp_restart_noos()
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{
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const uint32_t core_id = xPortGetCoreID();
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const uint32_t other_core_id = core_id == 0 ? 1 : 0;
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esp_cpu_stall(other_core_id);
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// other core is now stalled, can access DPORT registers directly
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esp_dport_access_int_deinit();
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// We need to disable TG0/TG1 watchdogs
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// First enable RTC watchdog to be on the safe side
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REG_WRITE(RTC_CNTL_WDTWPROTECT_REG, RTC_CNTL_WDT_WKEY_VALUE);
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REG_WRITE(RTC_CNTL_WDTCONFIG0_REG,
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RTC_CNTL_WDT_FLASHBOOT_MOD_EN_M |
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(1 << RTC_CNTL_WDT_SYS_RESET_LENGTH_S) |
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(1 << RTC_CNTL_WDT_CPU_RESET_LENGTH_S) );
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REG_WRITE(RTC_CNTL_WDTCONFIG1_REG, 128000);
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// Disable TG0/TG1 watchdogs
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TIMERG0.wdt_wprotect=TIMG_WDT_WKEY_VALUE;
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TIMERG0.wdt_config0.en = 0;
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TIMERG0.wdt_wprotect=0;
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TIMERG1.wdt_wprotect=TIMG_WDT_WKEY_VALUE;
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TIMERG1.wdt_config0.en = 0;
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TIMERG1.wdt_wprotect=0;
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// Disable all interrupts
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xt_ints_off(0xFFFFFFFF);
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// Disable cache
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Cache_Read_Disable(0);
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Cache_Read_Disable(1);
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// Flush any data left in UART FIFOs
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uart_tx_wait_idle(0);
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uart_tx_wait_idle(1);
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uart_tx_wait_idle(2);
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// Reset wifi/bluetooth/ethernet/sdio (bb/mac)
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DPORT_SET_PERI_REG_MASK(DPORT_CORE_RST_EN_REG,
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DPORT_BB_RST | DPORT_FE_RST | DPORT_MAC_RST |
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DPORT_BT_RST | DPORT_BTMAC_RST | DPORT_SDIO_RST |
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DPORT_SDIO_HOST_RST | DPORT_EMAC_RST | DPORT_MACPWR_RST |
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DPORT_RW_BTMAC_RST | DPORT_RW_BTLP_RST);
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DPORT_REG_WRITE(DPORT_CORE_RST_EN_REG, 0);
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// Reset timer/spi/uart
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DPORT_SET_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG,
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DPORT_TIMERS_RST | DPORT_SPI_RST_1 | DPORT_UART_RST);
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DPORT_REG_WRITE(DPORT_PERIP_RST_EN_REG, 0);
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// Set CPU back to XTAL source, no PLL, same as hard reset
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rtc_clk_cpu_freq_set(RTC_CPU_FREQ_XTAL);
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// Clear entry point for APP CPU
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DPORT_REG_WRITE(DPORT_APPCPU_CTRL_D_REG, 0);
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// Reset CPUs
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if (core_id == 0) {
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// Running on PRO CPU: APP CPU is stalled. Can reset both CPUs.
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SET_PERI_REG_MASK(RTC_CNTL_OPTIONS0_REG,
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RTC_CNTL_SW_PROCPU_RST_M | RTC_CNTL_SW_APPCPU_RST_M);
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} else {
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// Running on APP CPU: need to reset PRO CPU and unstall it,
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// then reset APP CPU
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SET_PERI_REG_MASK(RTC_CNTL_OPTIONS0_REG, RTC_CNTL_SW_PROCPU_RST_M);
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esp_cpu_unstall(0);
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SET_PERI_REG_MASK(RTC_CNTL_OPTIONS0_REG, RTC_CNTL_SW_APPCPU_RST_M);
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}
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while(true) {
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;
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}
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}
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void system_restart(void) __attribute__((alias("esp_restart")));
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uint32_t esp_get_free_heap_size(void)
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{
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return xPortGetFreeHeapSize();
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}
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uint32_t system_get_free_heap_size(void) __attribute__((alias("esp_get_free_heap_size")));
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const char* system_get_sdk_version(void)
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{
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return "master";
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}
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const char* esp_get_idf_version(void)
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{
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return IDF_VER;
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}
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static void get_chip_info_esp32(esp_chip_info_t* out_info)
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{
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out_info->model = CHIP_ESP32;
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uint32_t reg = REG_READ(EFUSE_BLK0_RDATA3_REG);
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memset(out_info, 0, sizeof(*out_info));
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if ((reg & EFUSE_RD_CHIP_VER_REV1_M) != 0) {
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out_info->revision = 1;
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}
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if ((reg & EFUSE_RD_CHIP_VER_DIS_APP_CPU_M) == 0) {
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out_info->cores = 2;
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} else {
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out_info->cores = 1;
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}
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out_info->features = CHIP_FEATURE_WIFI_BGN;
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if ((reg & EFUSE_RD_CHIP_VER_DIS_BT_M) == 0) {
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out_info->features |= CHIP_FEATURE_BT | CHIP_FEATURE_BLE;
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}
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if (((reg & EFUSE_RD_CHIP_VER_PKG_M) >> EFUSE_RD_CHIP_VER_PKG_S) ==
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EFUSE_RD_CHIP_VER_PKG_ESP32D2WDQ5) {
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out_info->features |= CHIP_FEATURE_EMB_FLASH;
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}
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}
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void esp_chip_info(esp_chip_info_t* out_info)
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{
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// Only ESP32 is supported now, in the future call one of the
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// chip-specific functions based on sdkconfig choice
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return get_chip_info_esp32(out_info);
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}
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