esp32, esp32s2beta: move brownout.c to esp_common

components/esp32/CMakeLists.txt

@@ -12,7 +12,6 @@ if(BOOTLOADER_BUILD)
 else()
     # Regular app build
     set(srcs 
-        "brownout.c"
         "cache_err_int.c"
         "cache_sram_mmu.c"
         "clk.c"

components/esp32/brownout.c

@@ -1,66 +0,0 @@
-// Copyright 2015-2017 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdbool.h>
-#include "sdkconfig.h"
-#include "soc/soc.h"
-#include "soc/cpu.h"
-#include "soc/rtc_periph.h"
-#include "hal/brownout_hal.h"
-#include "esp32/rom/ets_sys.h"
-#include "esp_private/system_internal.h"
-#include "driver/rtc_cntl.h"
-#include "freertos/FreeRTOS.h"
-
-#ifdef CONFIG_ESP32_BROWNOUT_DET_LVL
-#define BROWNOUT_DET_LVL CONFIG_ESP32_BROWNOUT_DET_LVL
-#else
-#define BROWNOUT_DET_LVL 0
-#endif //CONFIG_ESP32_BROWNOUT_DET_LVL
-
-static void rtc_brownout_isr_handler(void *arg)
-{
-    /* Normally RTC ISR clears the interrupt flag after the application-supplied
-     * handler returns. Since restart is called here, the flag needs to be
-     * cleared manually.
-     */
-    REG_WRITE(RTC_CNTL_INT_CLR_REG, RTC_CNTL_BROWN_OUT_INT_CLR);
-    /* Stall the other CPU to make sure the code running there doesn't use UART
-     * at the same time as the following ets_printf.
-     */
-    esp_cpu_stall(!xPortGetCoreID());
-    esp_reset_reason_set_hint(ESP_RST_BROWNOUT);
-    ets_printf("\r\nBrownout detector was triggered\r\n\r\n");
-    esp_restart_noos();
-}
-
-void esp_brownout_init(void)
-{
-    brownout_hal_config_t cfg = {
-        .threshold = BROWNOUT_DET_LVL,
-        .enabled = true,
-        .reset_enabled = false,
-        .flash_power_down = true,
-        .rf_power_down = true,
-    };
-
-    brownout_hal_config(&cfg);
-
-    ESP_ERROR_CHECK( rtc_isr_register(rtc_brownout_isr_handler, NULL, RTC_CNTL_BROWN_OUT_INT_ENA_M) );
-
-    brownout_hal_intr_enable(true);
-}

components/esp32s2/CMakeLists.txt

@@ -11,8 +11,7 @@ if(BOOTLOADER_BUILD)
 else()
     # Regular app build
 
-    set(srcs "brownout.c"
-             "cache_err_int.c"
+    set(srcs "cache_err_int.c"
              "clk.c"
              "cpu_start.c"
              "crosscore_int.c"

components/esp_common/CMakeLists.txt

@@ -6,7 +6,8 @@ if(BOOTLOADER_BUILD)
     set_property(TARGET ${COMPONENT_LIB} APPEND PROPERTY INTERFACE_LINK_LIBRARIES "-Wl,--gc-sections")
 else()
     # Regular app build
-    set(srcs "src/dbg_stubs.c"
+    set(srcs "src/brownout.c"
+             "src/dbg_stubs.c"
              "src/esp_err_to_name.c"
              "src/esp_timer.c"
              "src/ets_timer_legacy.c"

components/esp_common/src/brownout.c

@@ -26,11 +26,20 @@
 #include "driver/rtc_cntl.h"
 #include "freertos/FreeRTOS.h"
 
-#ifdef CONFIG_ESP32S2_BROWNOUT_DET_LVL
+#if defined(CONFIG_ESP32_BROWNOUT_DET_LVL)
+#define BROWNOUT_DET_LVL CONFIG_ESP32_BROWNOUT_DET_LVL
+#elif defined(CONFIG_ESP32S2_BROWNOUT_DET_LVL)
 #define BROWNOUT_DET_LVL CONFIG_ESP32S2_BROWNOUT_DET_LVL
 #else
 #define BROWNOUT_DET_LVL 0
-#endif //CONFIG_ESP32S2_BROWNOUT_DET_LVL
+#endif
+
+#ifdef SOC_BROWNOUT_RESET_SUPPORTED
+#define BROWNOUT_RESET_EN true
+#else
+#define BROWNOUT_RESET_EN false
+#endif // SOC_BROWNOUT_RESET_SUPPORTED
+
 
 static void rtc_brownout_isr_handler(void *arg)
 {
@@ -38,7 +47,7 @@ static void rtc_brownout_isr_handler(void *arg)
      * handler returns. Since restart is called here, the flag needs to be
      * cleared manually.
      */
-    REG_WRITE(RTC_CNTL_INT_CLR_REG, RTC_CNTL_BROWN_OUT_INT_CLR);
+    brownout_hal_intr_clear();
     /* Stall the other CPU to make sure the code running there doesn't use UART
      * at the same time as the following ets_printf.
      */
@@ -53,7 +62,7 @@ void esp_brownout_init(void)
     brownout_hal_config_t cfg = {
         .threshold = BROWNOUT_DET_LVL,
         .enabled = true,
-        .reset_enabled = false,
+        .reset_enabled = BROWNOUT_RESET_EN,
         .flash_power_down = true,
         .rf_power_down = true,
     };

components/soc/include/hal/brownout_hal.h

@@ -27,6 +27,7 @@ extern "C" {
 #include <stddef.h>
 #include <stdbool.h>
 #include <stdint.h>
+#include "soc/brownout_caps.h"
 
 typedef struct {
     uint8_t threshold;