This commit updates the watchdog timers (MWDT and RWDT) in the following ways: - Add seprate LL for MWDT and RWDT. - Add a combined WDT HAL for all Watchdog Timers - Update int_wdt.c and task_wdt.c to use WDT HAL - Remove most dependencies on LL or direct register access in other components. They will now use the WDT HAL - Update use of watchdogs (including RTC WDT) in bootloader and startup code to use the HAL layer.
194 lines
6.4 KiB
C
194 lines
6.4 KiB
C
// Copyright 2017 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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// 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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// This module implements runtime file I/O API for GCOV.
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#include <string.h>
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#include "esp_task_wdt.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "freertos/semphr.h"
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#include "soc/cpu.h"
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#include "soc/timer_periph.h"
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#include "esp_app_trace.h"
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#include "esp_private/dbg_stubs.h"
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#include "hal/wdt_hal.h"
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#if CONFIG_IDF_TARGET_ESP32
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#include "esp32/rom/libc_stubs.h"
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#elif CONFIG_IDF_TARGET_ESP32S2
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#include "esp32s2/rom/libc_stubs.h"
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#endif
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#if CONFIG_APPTRACE_GCOV_ENABLE
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#define ESP_GCOV_DOWN_BUF_SIZE 4200
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#define LOG_LOCAL_LEVEL CONFIG_LOG_DEFAULT_LEVEL
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#include "esp_log.h"
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const static char *TAG = "esp_gcov_rtio";
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extern void __gcov_dump(void);
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extern void __gcov_reset(void);
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static struct syscall_stub_table s_gcov_stub_table;
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static int gcov_stub_lock_try_acquire_recursive(_lock_t *lock)
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{
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if (*lock && uxSemaphoreGetCount((xSemaphoreHandle)(*lock)) == 0) {
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// we can do nothing here, gcov dump is initiated with some resource locked
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// which is also used by gcov functions
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ESP_EARLY_LOGE(TAG, "Lock 0x%x is busy during GCOV dump! System state can be inconsistent after dump!", lock);
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}
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return pdTRUE;
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}
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static void gcov_stub_lock_acquire_recursive(_lock_t *lock)
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{
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gcov_stub_lock_try_acquire_recursive(lock);
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}
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static void gcov_stub_lock_release_recursive(_lock_t *lock)
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{
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}
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static int esp_dbg_stub_gcov_dump_do(void)
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{
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int ret = ESP_OK;
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FILE* old_stderr = stderr;
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FILE* old_stdout = stdout;
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struct syscall_stub_table* old_table = syscall_table_ptr_pro;
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ESP_EARLY_LOGV(TAG, "Alloc apptrace down buf %d bytes", ESP_GCOV_DOWN_BUF_SIZE);
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void *down_buf = malloc(ESP_GCOV_DOWN_BUF_SIZE);
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if (down_buf == NULL) {
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ESP_EARLY_LOGE(TAG, "Could not allocate memory for the buffer");
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return ESP_ERR_NO_MEM;
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}
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ESP_EARLY_LOGV(TAG, "Config apptrace down buf");
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esp_apptrace_down_buffer_config(down_buf, ESP_GCOV_DOWN_BUF_SIZE);
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ESP_EARLY_LOGV(TAG, "Dump data...");
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// incase of dual-core chip APP and PRO CPUs share the same table, so it is safe to save only PRO's table
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memcpy(&s_gcov_stub_table, old_table, sizeof(s_gcov_stub_table));
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s_gcov_stub_table._lock_acquire_recursive = &gcov_stub_lock_acquire_recursive;
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s_gcov_stub_table._lock_release_recursive = &gcov_stub_lock_release_recursive;
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s_gcov_stub_table._lock_try_acquire_recursive = &gcov_stub_lock_try_acquire_recursive,
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syscall_table_ptr_pro = &s_gcov_stub_table;
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stderr = (FILE*) &__sf_fake_stderr;
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stdout = (FILE*) &__sf_fake_stdout;
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__gcov_dump();
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// reset dump status to allow incremental data accumulation
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__gcov_reset();
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stdout = old_stdout;
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stderr = old_stderr;
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syscall_table_ptr_pro = old_table;
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ESP_EARLY_LOGV(TAG, "Free apptrace down buf");
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free(down_buf);
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ESP_EARLY_LOGV(TAG, "Finish file transfer session");
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ret = esp_apptrace_fstop(ESP_APPTRACE_DEST_TRAX);
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if (ret != ESP_OK) {
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ESP_EARLY_LOGE(TAG, "Failed to send files transfer stop cmd (%d)!", ret);
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}
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return ret;
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}
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/**
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* @brief Triggers gcov info dump.
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* This function is to be called by OpenOCD, not by normal user code.
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* TODO: what about interrupted flash access (when cache disabled)???
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*
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* @return ESP_OK on success, otherwise see esp_err_t
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*/
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static int esp_dbg_stub_gcov_entry(void)
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{
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return esp_dbg_stub_gcov_dump_do();
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}
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int gcov_rtio_atexit(void (*function)(void) __attribute__ ((unused)))
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{
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ESP_EARLY_LOGV(TAG, "%s", __FUNCTION__);
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esp_dbg_stub_entry_set(ESP_DBG_STUB_ENTRY_GCOV, (uint32_t)&esp_dbg_stub_gcov_entry);
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return 0;
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}
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void esp_gcov_dump(void)
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{
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// disable IRQs on this CPU, other CPU is halted by OpenOCD
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unsigned irq_state = portENTER_CRITICAL_NESTED();
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#if !CONFIG_FREERTOS_UNICORE
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int other_core = xPortGetCoreID() ? 0 : 1;
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esp_cpu_stall(other_core);
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#endif
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while (!esp_apptrace_host_is_connected(ESP_APPTRACE_DEST_TRAX)) {
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wdt_hal_context_t twdt = {.inst = WDT_MWDT0, .mwdt_dev = &TIMERG0};
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wdt_hal_context_t iwdt = {.inst = WDT_MWDT1, .mwdt_dev = &TIMERG1};
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//Feed the Task Watchdog (TG0) to prevent it from timing out
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wdt_hal_write_protect_disable(&twdt);
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wdt_hal_feed(&twdt);
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wdt_hal_write_protect_enable(&twdt);
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//Likewise, feed the Interrupt Watchdog (TG1) to prevent a reboot
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wdt_hal_write_protect_disable(&iwdt);
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wdt_hal_feed(&iwdt);
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wdt_hal_write_protect_enable(&iwdt);
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}
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esp_dbg_stub_gcov_dump_do();
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#if !CONFIG_FREERTOS_UNICORE
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esp_cpu_unstall(other_core);
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#endif
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portEXIT_CRITICAL_NESTED(irq_state);
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}
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void *gcov_rtio_fopen(const char *path, const char *mode)
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{
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ESP_EARLY_LOGV(TAG, "%s '%s' '%s'", __FUNCTION__, path, mode);
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return esp_apptrace_fopen(ESP_APPTRACE_DEST_TRAX, path, mode);
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}
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int gcov_rtio_fclose(void *stream)
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{
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ESP_EARLY_LOGV(TAG, "%s", __FUNCTION__);
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return esp_apptrace_fclose(ESP_APPTRACE_DEST_TRAX, stream);
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}
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size_t gcov_rtio_fread(void *ptr, size_t size, size_t nmemb, void *stream)
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{
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ESP_EARLY_LOGV(TAG, "%s read %u", __FUNCTION__, size*nmemb);
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size_t sz = esp_apptrace_fread(ESP_APPTRACE_DEST_TRAX, ptr, size, nmemb, stream);
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ESP_EARLY_LOGV(TAG, "%s actually read %u", __FUNCTION__, sz);
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return sz;
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}
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size_t gcov_rtio_fwrite(const void *ptr, size_t size, size_t nmemb, void *stream)
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{
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ESP_EARLY_LOGV(TAG, "%s", __FUNCTION__);
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return esp_apptrace_fwrite(ESP_APPTRACE_DEST_TRAX, ptr, size, nmemb, stream);
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}
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int gcov_rtio_fseek(void *stream, long offset, int whence)
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{
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int ret = esp_apptrace_fseek(ESP_APPTRACE_DEST_TRAX, stream, offset, whence);
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ESP_EARLY_LOGV(TAG, "%s(%p %ld %d) = %d", __FUNCTION__, stream, offset, whence, ret);
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return ret;
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}
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long gcov_rtio_ftell(void *stream)
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{
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long ret = esp_apptrace_ftell(ESP_APPTRACE_DEST_TRAX, stream);
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ESP_EARLY_LOGV(TAG, "%s(%p) = %ld", __FUNCTION__, stream, ret);
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return ret;
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}
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#endif
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