158 lines
4.4 KiB
C
158 lines
4.4 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 "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 "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 "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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void system_init()
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{
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}
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esp_err_t esp_efuse_read_mac(uint8_t* mac)
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{
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uint8_t efuse_crc;
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uint8_t calc_crc;
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uint32_t mac_low = REG_READ(EFUSE_BLK0_RDATA1_REG);
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uint32_t 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, "MAC address 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[6]) __attribute__((alias("esp_efuse_read_mac")));
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void IRAM_ATTR esp_restart(void)
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{
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esp_wifi_stop();
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// Disable scheduler on this core.
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vTaskSuspendAll();
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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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// 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 FIFO
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uart_tx_flush(0);
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uart_tx_flush(1);
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uart_tx_flush(2);
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// Reset wifi/bluetooth (bb/mac)
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SET_PERI_REG_MASK(DPORT_WIFI_RST_EN_REG, 0x1f);
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REG_WRITE(DPORT_WIFI_RST_EN_REG, 0);
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// Reset timer/spi/uart
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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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REG_WRITE(DPORT_PERIP_RST_EN_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 stall 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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esp_cpu_stall(1);
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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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void system_restore(void)
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{
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esp_wifi_restore();
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}
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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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