mirror of
https://github.com/espressif/esp-idf.git
synced 2024-09-21 06:56:11 -04:00
116 lines
3.8 KiB
C
116 lines
3.8 KiB
C
/*
|
|
* SPDX-FileCopyrightText: 2018-2022 Espressif Systems (Shanghai) CO LTD
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
#include <string.h>
|
|
#include "sdkconfig.h"
|
|
#include "esp_system.h"
|
|
#include "esp_private/system_internal.h"
|
|
#include "esp_attr.h"
|
|
#include "esp_efuse.h"
|
|
#include "esp_log.h"
|
|
#include "riscv/riscv_interrupts.h"
|
|
#include "riscv/interrupt.h"
|
|
#include "esp_rom_uart.h"
|
|
#include "soc/gpio_reg.h"
|
|
#include "soc/rtc_cntl_reg.h"
|
|
#include "soc/timer_group_reg.h"
|
|
#include "esp_cpu.h"
|
|
#include "soc/rtc.h"
|
|
#include "soc/rtc_periph.h"
|
|
#include "soc/syscon_reg.h"
|
|
#include "soc/system_reg.h"
|
|
#include "hal/wdt_hal.h"
|
|
#include "esp_private/cache_err_int.h"
|
|
|
|
#include "esp32c2/rom/cache.h"
|
|
#include "esp32c2/rom/rtc.h"
|
|
|
|
/* "inner" restart function for after RTOS, interrupts & anything else on this
|
|
* core are already stopped. Stalls other core, resets hardware,
|
|
* triggers restart.
|
|
*/
|
|
void IRAM_ATTR esp_restart_noos(void)
|
|
{
|
|
// Disable interrupts
|
|
riscv_global_interrupts_disable();
|
|
// Enable RTC watchdog for 1 second
|
|
wdt_hal_context_t rtc_wdt_ctx;
|
|
wdt_hal_init(&rtc_wdt_ctx, WDT_RWDT, 0, false);
|
|
uint32_t stage_timeout_ticks = (uint32_t)(1000ULL * rtc_clk_slow_freq_get_hz() / 1000ULL);
|
|
wdt_hal_write_protect_disable(&rtc_wdt_ctx);
|
|
wdt_hal_config_stage(&rtc_wdt_ctx, WDT_STAGE0, stage_timeout_ticks, WDT_STAGE_ACTION_RESET_SYSTEM);
|
|
wdt_hal_config_stage(&rtc_wdt_ctx, WDT_STAGE1, stage_timeout_ticks, WDT_STAGE_ACTION_RESET_RTC);
|
|
//Enable flash boot mode so that flash booting after restart is protected by the RTC WDT.
|
|
wdt_hal_set_flashboot_en(&rtc_wdt_ctx, true);
|
|
wdt_hal_write_protect_enable(&rtc_wdt_ctx);
|
|
|
|
// Reset and stall the other CPU.
|
|
// CPU must be reset before stalling, in case it was running a s32c1i
|
|
// instruction. This would cause memory pool to be locked by arbiter
|
|
// to the stalled CPU, preventing current CPU from accessing this pool.
|
|
const uint32_t core_id = cpu_hal_get_core_id();
|
|
#if !CONFIG_FREERTOS_UNICORE
|
|
const uint32_t other_core_id = (core_id == 0) ? 1 : 0;
|
|
esp_cpu_reset(other_core_id);
|
|
esp_cpu_stall(other_core_id);
|
|
#endif
|
|
|
|
// Disable TG0/TG1 watchdogs
|
|
wdt_hal_context_t wdt0_context = {.inst = WDT_MWDT0, .mwdt_dev = &TIMERG0};
|
|
wdt_hal_write_protect_disable(&wdt0_context);
|
|
wdt_hal_disable(&wdt0_context);
|
|
wdt_hal_write_protect_enable(&wdt0_context);
|
|
|
|
// Flush any data left in UART FIFOs
|
|
esp_rom_uart_tx_wait_idle(0);
|
|
esp_rom_uart_tx_wait_idle(1);
|
|
// Disable cache
|
|
Cache_Disable_ICache();
|
|
|
|
// 2nd stage bootloader reconfigures SPI flash signals.
|
|
// Reset them to the defaults expected by ROM.
|
|
WRITE_PERI_REG(GPIO_FUNC0_IN_SEL_CFG_REG, 0x30);
|
|
WRITE_PERI_REG(GPIO_FUNC1_IN_SEL_CFG_REG, 0x30);
|
|
WRITE_PERI_REG(GPIO_FUNC2_IN_SEL_CFG_REG, 0x30);
|
|
WRITE_PERI_REG(GPIO_FUNC3_IN_SEL_CFG_REG, 0x30);
|
|
WRITE_PERI_REG(GPIO_FUNC4_IN_SEL_CFG_REG, 0x30);
|
|
WRITE_PERI_REG(GPIO_FUNC5_IN_SEL_CFG_REG, 0x30);
|
|
|
|
// Reset wifi/bluetooth/ethernet/sdio (bb/mac)
|
|
|
|
REG_WRITE(SYSTEM_CORE_RST_EN_REG, 0);
|
|
|
|
// Reset timer/spi/uart
|
|
SET_PERI_REG_MASK(SYSTEM_PERIP_RST_EN0_REG,
|
|
SYSTEM_SPI01_RST | SYSTEM_UART_RST | SYSTEM_SYSTIMER_RST);
|
|
REG_WRITE(SYSTEM_PERIP_RST_EN0_REG, 0);
|
|
// Reset dma
|
|
SET_PERI_REG_MASK(SYSTEM_PERIP_RST_EN1_REG, SYSTEM_DMA_RST);
|
|
REG_WRITE(SYSTEM_PERIP_RST_EN1_REG, 0);
|
|
|
|
// Set CPU back to XTAL source, no PLL, same as hard reset
|
|
#if !CONFIG_IDF_ENV_FPGA
|
|
rtc_clk_cpu_freq_set_xtal();
|
|
#endif
|
|
|
|
#if !CONFIG_FREERTOS_UNICORE
|
|
// Clear entry point for APP CPU
|
|
REG_WRITE(SYSTEM_CORE_1_CONTROL_1_REG, 0);
|
|
#endif
|
|
|
|
// Reset CPUs
|
|
if (core_id == 0) {
|
|
// Running on PRO CPU: APP CPU is stalled. Can reset both CPUs.
|
|
#if !CONFIG_FREERTOS_UNICORE
|
|
esp_cpu_reset(1);
|
|
#endif
|
|
esp_cpu_reset(0);
|
|
}
|
|
while (true) {
|
|
;
|
|
}
|
|
}
|