esp_common: move brownout init

components/esp_common/CMakeLists.txt

@@ -9,8 +9,7 @@ if(BOOTLOADER_BUILD)
     set_property(TARGET ${COMPONENT_LIB} APPEND PROPERTY INTERFACE_LINK_LIBRARIES "-Wl,--gc-sections")
 else()
     # Regular app build
-    list(APPEND srcs "src/brownout.c"
-             "src/esp_err.c"
+    list(APPEND srcs "src/esp_err.c"
              "src/esp_err_to_name.c"
              "src/freertos_hooks.c"
              "src/stack_check.c")

components/esp_system/Kconfig

@@ -122,6 +122,76 @@ menu "ESP System Settings"
 
     endmenu  # Memory protection
 
+    config ESP_INT_WDT
+        bool "Interrupt watchdog"
+        default y
+        help
+            This watchdog timer can detect if the FreeRTOS tick interrupt has not been called for a certain time,
+            either because a task turned off interrupts and did not turn them on for a long time, or because an
+            interrupt handler did not return. It will try to invoke the panic handler first and failing that
+            reset the SoC.
+
+    config ESP_INT_WDT_TIMEOUT_MS
+        int "Interrupt watchdog timeout (ms)"
+        depends on ESP_INT_WDT
+        default 300 if !ESP32_SPIRAM_SUPPORT
+        default 800 if ESP32_SPIRAM_SUPPORT
+        range 10 10000
+        help
+            The timeout of the watchdog, in miliseconds. Make this higher than the FreeRTOS tick rate.
+
+    config ESP_INT_WDT_CHECK_CPU1
+        bool "Also watch CPU1 tick interrupt"
+        depends on ESP_INT_WDT && !FREERTOS_UNICORE
+        default y
+        help
+            Also detect if interrupts on CPU 1 are disabled for too long.
+
+    config ESP_TASK_WDT
+        bool "Initialize Task Watchdog Timer on startup"
+        default y
+        help
+            The Task Watchdog Timer can be used to make sure individual tasks are still
+            running. Enabling this option will cause the Task Watchdog Timer to be
+            initialized automatically at startup. The Task Watchdog timer can be
+            initialized after startup as well (see Task Watchdog Timer API Reference)
+
+    config ESP_TASK_WDT_PANIC
+        bool "Invoke panic handler on Task Watchdog timeout"
+        depends on ESP_TASK_WDT
+        default n
+        help
+            If this option is enabled, the Task Watchdog Timer will be configured to
+            trigger the panic handler when it times out. This can also be configured
+            at run time (see Task Watchdog Timer API Reference)
+
+    config ESP_TASK_WDT_TIMEOUT_S
+        int "Task Watchdog timeout period (seconds)"
+        depends on ESP_TASK_WDT
+        range 1 60
+        default 5
+        help
+            Timeout period configuration for the Task Watchdog Timer in seconds.
+            This is also configurable at run time (see Task Watchdog Timer API Reference)
+
+    config ESP_TASK_WDT_CHECK_IDLE_TASK_CPU0
+        bool "Watch CPU0 Idle Task"
+        depends on ESP_TASK_WDT
+        default y
+        help
+            If this option is enabled, the Task Watchdog Timer will watch the CPU0
+            Idle Task. Having the Task Watchdog watch the Idle Task allows for detection
+            of CPU starvation as the Idle Task not being called is usually a symptom of
+            CPU starvation. Starvation of the Idle Task is detrimental as FreeRTOS household
+            tasks depend on the Idle Task getting some runtime every now and then.
+
+    config ESP_TASK_WDT_CHECK_IDLE_TASK_CPU1
+        bool "Watch CPU1 Idle Task"
+        depends on ESP_TASK_WDT && !FREERTOS_UNICORE
+        default y
+        help
+            If this option is enabled, the Task Wtachdog Timer will wach the CPU1
+            Idle Task.
     config ESP_DEBUG_STUBS_ENABLE
         bool
         default COMPILER_OPTIMIZATION_LEVEL_DEBUG

components/esp_system/port/CMakeLists.txt

@@ -1,6 +1,6 @@
-target_include_directories(${COMPONENT_LIB} PRIVATE include)
+target_include_directories(${COMPONENT_LIB} PRIVATE include .)
 
-set(srcs "cpu_start.c" "panic_handler.c")
+set(srcs "cpu_start.c" "panic_handler.c" "brownout.c")
 add_prefix(srcs "${CMAKE_CURRENT_LIST_DIR}/" ${srcs})
 
 target_sources(${COMPONENT_LIB} PRIVATE ${srcs})