esp-idf/components/esp_system/port/soc/esp32c3/system_internal.c
wangmengyang 1d55f12c2d component/bt: reset Bluetooth hardware during controller inititalization on ESP32-C3/ESP32-S3
1. Rename MACROs SYSTEM_WIFI_RST_EN register bit fields to be more recognizable
2. reset Bluetooth baseband and clock bits to fix the issue of task watchdog triggered during controller initialization due to invalid hardware state
2022-07-06 16:23:48 +08:00

140 lines
4.9 KiB
C

/*
* SPDX-FileCopyrightText: 2018-2021 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 "soc/uart_reg.h"
#include "hal/wdt_hal.h"
#include "hal/cpu_hal.h"
#include "esp_private/cache_err_int.h"
#include "esp32c3/rom/cache.h"
#include "esp32c3/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);
wdt_hal_context_t wdt1_context = {.inst = WDT_MWDT1, .mwdt_dev = &TIMERG1};
wdt_hal_write_protect_disable(&wdt1_context);
wdt_hal_disable(&wdt1_context);
wdt_hal_write_protect_enable(&wdt1_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)
SET_PERI_REG_MASK(SYSTEM_CORE_RST_EN_REG,
SYSTEM_WIFIBB_RST | SYSTEM_FE_RST | SYSTEM_WIFIMAC_RST |
SYSTEM_SDIO_RST | SYSTEM_EMAC_RST | SYSTEM_MACPWR_RST |
SYSTEM_BTBB_RST | SYSTEM_BTBB_REG_RST |
SYSTEM_RW_BTMAC_RST | SYSTEM_RW_BTLP_RST | SYSTEM_RW_BTMAC_REG_RST | SYSTEM_RW_BTLP_REG_RST);
REG_WRITE(SYSTEM_CORE_RST_EN_REG, 0);
// Reset uart0 core first, then reset apb side.
// rom will clear this bit, as well as SYSTEM_UART_RST
SET_PERI_REG_MASK(UART_CLK_CONF_REG(0), UART_RST_CORE_M);
// Reset timer/spi/uart
SET_PERI_REG_MASK(SYSTEM_PERIP_RST_EN0_REG,
SYSTEM_TIMERS_RST | 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);
}
#if !CONFIG_FREERTOS_UNICORE
else {
// Running on APP CPU: need to reset PRO CPU and unstall it,
// then reset APP CPU
esp_cpu_reset(0);
esp_cpu_unstall(0);
esp_cpu_reset(1);
}
#endif
while (true) {
;
}
}