arch/risc-v/esp32[-c3|-c6|-h2]: Add auto sleep

Add auto sleep for risc-v based Espressif devices

Signed-off-by: Eren Terzioglu <eren.terzioglu@espressif.com>

arch/risc-v/src/common/espressif/CMakeLists.txt

@@ -34,6 +34,13 @@ list(APPEND SRCS esp_irq.c esp_gpio.c esp_rtc_gpio.c esp_libc_stubs.c)
 list(APPEND SRCS esp_lowputc.c esp_serial.c)
 list(APPEND SRCS esp_systemreset.c)
 
+if(CONFIG_ARCH_HAVE_EXTRA_HEAPS)
+  list(APPEND SRCS esp_extraheaps.c)
+  if(CONFIG_ESPRESSIF_RETENTION_HEAP)
+    list(APPEND SRCS esp_retentionheap.c)
+  endif()
+endif()
+
 if(CONFIG_SCHED_TICKLESS)
   list(APPEND SRCS esp_tickless.c)
 else()
@@ -202,7 +209,7 @@ if(DEFINED ENV{ESP_HAL_3RDPARTY_VERSION})
       CACHE STRING "ESP HAL 3rdparty version")
 else()
   set(ESP_HAL_3RDPARTY_VERSION
-      5d8324708f55d5a927329553cdceebf7eafbd8c6
+      b7e51db97a3f9dc82d3b3524d2bad298ba1e2647
       CACHE STRING "ESP HAL 3rdparty version")
 endif()
 

arch/risc-v/src/common/espressif/Kconfig

@@ -469,6 +469,22 @@ endmenu # LP Core (Low-power core) Coprocessor Configuration
 
 menu "PM Configuration"
 
+config ESPRESSIF_AUTO_SLEEP
+	bool "Auto-sleep"
+	default n
+	select PM
+	select ESPRESSIF_HR_TIMER
+	select ARCH_HAVE_EXTRA_HEAPS if ARCH_CHIP_ESP32C3
+	select ESPRESSIF_RETENTION_HEAP if ARCH_CHIP_ESP32C3
+	select SCHED_TICKLESS
+	---help---
+		Enable Auto-sleep
+
+config ESPRESSIF_RETENTION_HEAP
+	bool "Use retention memory as a separate heap"
+	depends on ARCH_CHIP_ESP32C3
+	default n
+
 if PM
 
 config PM_EXT1_WAKEUP
@@ -615,6 +631,7 @@ config PM_ULP_WAKEUP
 config PM_GPIO_WAKEUP
 	bool "PM GPIO Wakeup"
 	default n
+	depends on ARCH_CHIP_ESP32C3
 	---help---
 		Enable GPIO wakeup functionality.
 		This allows the system to wake up from PM_STANDBY

arch/risc-v/src/common/espressif/Make.defs

@@ -39,6 +39,13 @@ CHIP_CSRCS += esp_irq.c esp_gpio.c esp_rtc_gpio.c esp_libc_stubs.c
 CHIP_CSRCS += esp_lowputc.c esp_serial.c
 CHIP_CSRCS += esp_systemreset.c
 
+ifeq ($(CONFIG_ARCH_HAVE_EXTRA_HEAPS),y)
+	CHIP_CSRCS += esp_extraheaps.c
+	ifeq ($(CONFIG_ESPRESSIF_RETENTION_HEAP),y)
+		CHIP_CSRCS += esp_retentionheap.c
+	endif
+endif
+
 ifeq ($(CONFIG_SCHED_TICKLESS),y)
 	CHIP_CSRCS += esp_tickless.c
 else
@@ -210,7 +217,7 @@ endif
 
 ESP_HAL_3RDPARTY_REPO   = esp-hal-3rdparty
 ifndef ESP_HAL_3RDPARTY_VERSION
-	ESP_HAL_3RDPARTY_VERSION = 5d8324708f55d5a927329553cdceebf7eafbd8c6
+	ESP_HAL_3RDPARTY_VERSION = b7e51db97a3f9dc82d3b3524d2bad298ba1e2647
 endif
 
 ifndef ESP_HAL_3RDPARTY_URL

arch/risc-v/src/common/espressif/esp_allocateheap.c

@@ -36,11 +36,20 @@
 
 #include "riscv_internal.h"
 #include "rom/rom_layout.h"
+#ifdef CONFIG_ESPRESSIF_RETENTION_HEAP
+#  include "esp_retentionheap.h"
+#endif
 
 /****************************************************************************
  * Pre-processor Definitions
  ****************************************************************************/
 
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+uintptr_t _heap_start;
+
 /****************************************************************************
  * Public Functions
  ****************************************************************************/
@@ -77,11 +86,22 @@ void up_allocate_heap(void **heap_start, size_t *heap_size)
    * Check boards/risc-v/espressif.
    */
 
+#ifdef CONFIG_ESPRESSIF_RETENTION_HEAP
+  uintptr_t rstart;
+  uintptr_t rend;
+#endif
+
   board_autoled_on(LED_HEAPALLOCATE);
 
   *heap_start = (void *)g_idle_topstack;
+#ifdef CONFIG_ESPRESSIF_RETENTION_HEAP
+  esp_retentionheap_find_region(&rstart, &rend);
+  *heap_size  = (uintptr_t) rstart - g_idle_topstack;
+#else
   *heap_size  = (uintptr_t)ets_rom_layout_p->dram0_rtos_reserved_start -
                            g_idle_topstack;
+#endif
+  _heap_start = g_idle_topstack;
 }
 
 /****************************************************************************

arch/risc-v/src/common/espressif/esp_extraheaps.c

@@ -0,0 +1,43 @@
+/****************************************************************************
+ * arch/risc-v/src/common/espressif/esp_extraheaps.c
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <nuttx/arch.h>
+
+#ifdef CONFIG_ESPRESSIF_RETENTION_HEAP
+#  include "esp_retentionheap.h"
+#endif
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+void up_extraheaps_init(void)
+{
+#ifdef CONFIG_ESPRESSIF_RETENTION_HEAP
+  esp_retentionheap_initialize();
+#endif
+}

arch/risc-v/src/common/espressif/esp_idle.c

@@ -34,10 +34,26 @@
 #include <nuttx/spinlock.h>
 #include <nuttx/debug.h>
 #include <nuttx/arch.h>
+#include <sys/param.h>
 
 #include "riscv_internal.h"
 #include "esp_pm.h"
 
+#ifdef CONFIG_ESPRESSIF_HR_TIMER
+#include "esp_hr_timer.h"
+#endif
+
+#ifdef CONFIG_SCHED_TICKLESS
+#include "esp_tickless.h"
+#endif
+
+#ifdef CONFIG_ESPRESSIF_AUTO_SLEEP
+#include "esp_private/pm_impl.h"
+#include "platform/os.h"
+#endif
+
+#include "esp_sleep.h"
+
 /****************************************************************************
  * Pre-processor Definitions
  ****************************************************************************/
@@ -87,6 +103,9 @@ static spinlock_t g_esp_idle_lock = SP_UNLOCKED;
 static void up_idlepm(void)
 {
   irqstate_t flags;
+#  ifdef CONFIG_ESPRESSIF_AUTO_SLEEP
+  esp_os_application_sleep();
+#  else
   static enum pm_state_e oldstate = PM_NORMAL;
   enum pm_state_e newstate;
   int ret;
@@ -169,16 +188,17 @@ static void up_idlepm(void)
     }
   else
     {
-#  ifdef CONFIG_WATCHDOG
+#    ifdef CONFIG_WATCHDOG
       /* Announce the power management state change to feed watchdog */
 
       pm_changestate(PM_IDLE_DOMAIN, PM_NORMAL);
-#  endif
+#    endif
     }
+#  endif /* CONFIG_ESPRESSIF_AUTO_SLEEP */
 }
 #else
 #  define up_idlepm()
-#endif
+#endif /* CONFIG_PM */
 
 /****************************************************************************
  * Public Functions
@@ -216,7 +236,12 @@ void up_idle(void)
    * sleep in a reduced power mode until an interrupt occurs to save power
    */
 
+#ifdef CONFIG_ESPRESSIF_AUTO_SLEEP
+  esp_pm_impl_idle_hook();
+  esp_pm_impl_waiti();
+#else
   asm("WFI");
+#endif
 
   /* Perform IDLE mode power management */
 

arch/risc-v/src/common/espressif/esp_pm.c

@@ -30,7 +30,10 @@
 
 #include <nuttx/debug.h>
 
-#include "esp_pm.h"
+#include "include/esp_pm.h"
+#include "espressif/esp_pm.h"
+#include "esp_hr_timer.h"
+
 #ifdef CONFIG_SCHED_TICKLESS
 #  include "esp_tickless.h"
 #endif
@@ -38,6 +41,9 @@
 #include "soc/rtc.h"
 #include "esp_sleep_internal.h"
 #include "esp_pmu.h"
+#include "esp_attr.h"
+#include "esp_private/pm_impl.h"
+
 #ifdef CONFIG_PM_EXT1_WAKEUP
 #  include "driver/rtc_io.h"
 #endif
@@ -57,7 +63,7 @@
  * Pre-processor Definitions
  ****************************************************************************/
 
-#if defined(CONFIG_ARCH_CHIP_ESP32C3_GENERIC) || \
+#if defined(CONFIG_ARCH_CHIP_ESP32C3) || \
     defined(CONFIG_ARCH_CHIP_ESP32C6)
 #  define CHECK_VDD_SPI 1
 #  if defined(CONFIG_ARCH_CHIP_ESP32C6)
@@ -69,6 +75,19 @@
 #  endif /* CONFIG_ARCH_CHIP_ESP32C6 */
 #endif /* CONFIG_ARCH_CHIP_ESP32C3_GENERIC || CONFIG_ARCH_CHIP_ESP32C6 */
 
+#ifdef CONFIG_PM_EXT0_WAKEUP
+#  define EXT0_WAIT_TIME_US 5000000
+#endif
+#ifdef CONFIG_PM_EXT1_WAKEUP
+#  define EXT1_WAIT_TIME_US 5000000
+#endif
+#ifdef CONFIG_PM_GPIO_WAKEUP
+#  define GPIO_WAIT_TIME_US 5000000
+#endif
+#ifdef CONFIG_PM_UART_WAKEUP
+#  define UART_WAIT_TIME_US 5000000
+#endif
+
 /****************************************************************************
  * Private Data
  ****************************************************************************/
@@ -94,10 +113,41 @@ const char *g_wakeup_reasons[] =
   ""
 };
 
+static esp_sleep_wakeup_cause_t g_last_wakeup_reason =
+                                  ESP_SLEEP_WAKEUP_UNDEFINED;
+static uint64_t g_last_wakeup_time = 0;
+
 /****************************************************************************
  * Private Functions
  ****************************************************************************/
 
+#ifdef CONFIG_PM_EXT0_WAKEUP
+/****************************************************************************
+ * Name: esp_pm_ext0_wakeup_prepare
+ *
+ * Description:
+ *   Configure ext0 gpios to use as wakeup source.
+ *
+ * Input Parameters:
+ *   None
+ *
+ * Returned Value:
+ *   None
+ *
+ ****************************************************************************/
+
+static void IRAM_ATTR esp_pm_ext0_wakeup_prepare(void)
+{
+  int pin = CONFIG_PM_EXT0_WAKEUP_GPIO;
+#  ifdef CONFIG_PM_EXT0_WAKEUP_TRIGGER_LOW
+  int level_mode = 0;
+#  else
+  int level_mode = 1;
+#  endif /* CONFIG_PM_EXT0_WAKEUP */
+  esp_sleep_enable_ext0_wakeup(pin, level_mode);
+}
+#endif /* CONFIG_PM_EXT0_WAKEUP */
+
 #ifdef CONFIG_PM_EXT1_WAKEUP
 /****************************************************************************
  * Name: esp_pm_get_ext1_io_mask
@@ -410,6 +460,163 @@ static void IRAM_ATTR esp_pm_uart_wakeup_prepare(void)
 }
 #endif /* CONFIG_PM_UART_WAKEUP */
 
+#ifdef CONFIG_ESPRESSIF_AUTO_SLEEP
+
+/****************************************************************************
+ * Name: esp_pm_skip_light_sleep
+ *
+ * Description:
+ *   Callback for the power manager's "skip light sleep" hook. This function
+ *   checks if the system should defer entering light sleep after waking up
+ *   from any supported wakeup source (EXT0, EXT1, GPIO, UART). It compares
+ *   the current time to the last wakeup time for each source. If the system
+ *   is still within the configured guard window for any wakeup source, it
+ *   returns true to skip light sleep and let peripheral activity finish. If
+ *   the guard window has elapsed or there was no wakeup, it returns false
+ *   and allows light sleep to proceed.
+ *
+ *   Placed in IRAM because it runs in timing-critical power management
+ *   decision paths.
+ *
+ * Input Parameters:
+ *   None
+ *
+ * Returned Value:
+ *   true  - Skip light sleep (recent EXT0, EXT1, GPIO, or UART wakeup still
+ *           within the configured guard window).
+ *   false - Allow light sleep (no relevant wakeup or guard window elapsed).
+ *
+ ****************************************************************************/
+
+static bool IRAM_ATTR esp_pm_skip_light_sleep(void)
+{
+  bool skip = false;
+#if defined(CONFIG_PM_EXT0_WAKEUP) || \
+    defined(CONFIG_PM_EXT1_WAKEUP) || \
+    defined(CONFIG_PM_GPIO_WAKEUP) || \
+    defined(CONFIG_PM_UART_WAKEUP)
+  uint64_t current_time = esp_hr_timer_time_us();
+#endif
+
+#ifdef CONFIG_PM_EXT0_WAKEUP
+  if (g_last_wakeup_reason == ESP_SLEEP_WAKEUP_EXT0 &&
+      current_time < (g_last_wakeup_time + EXT0_WAIT_TIME_US))
+    {
+      pwrinfo("EXT0 wakeup still within guard window\n");
+      skip = true;
+    }
+#endif
+
+#ifdef CONFIG_PM_EXT1_WAKEUP
+  if (g_last_wakeup_reason == ESP_SLEEP_WAKEUP_EXT1 &&
+      current_time < (g_last_wakeup_time + EXT1_WAIT_TIME_US))
+    {
+      pwrinfo("EXT1 wakeup still within guard window\n");
+      skip = true;
+    }
+#endif
+
+#ifdef CONFIG_PM_GPIO_WAKEUP
+  if (g_last_wakeup_reason == ESP_SLEEP_WAKEUP_GPIO &&
+      current_time < (g_last_wakeup_time + GPIO_WAIT_TIME_US))
+    {
+      pwrinfo("GPIO wakeup still within guard window\n");
+      skip = true;
+    }
+#endif
+
+#ifdef CONFIG_PM_UART_WAKEUP
+  if (g_last_wakeup_reason == ESP_SLEEP_WAKEUP_UART &&
+      current_time < (g_last_wakeup_time + UART_WAIT_TIME_US))
+    {
+      pwrinfo("UART wakeup still within guard window\n");
+      skip = true;
+    }
+#endif
+
+  return skip;
+}
+
+/****************************************************************************
+ * Name: esp_pm_light_sleep_exit_cb
+ *
+ * Description:
+ *   Store wakeup reason and timestamp on light sleep exit.
+ *
+ * Input Parameters:
+ *   sleep_time_us - Actual sleep time in microseconds (unused).
+ *   arg           - User callback argument (unused).
+ *
+ * Returned Value:
+ *   ESP_OK
+ *
+ ****************************************************************************/
+
+static esp_err_t IRAM_ATTR esp_pm_light_sleep_exit_cb(int64_t sleep_time_us,
+                                                      void *arg)
+{
+  esp_sleep_wakeup_cause_t wc;
+  uint64_t tw;
+
+  UNUSED(sleep_time_us);
+  UNUSED(arg);
+
+  wc = esp_sleep_get_wakeup_cause();
+  tw = esp_hr_timer_time_us();
+
+  pwrinfo("Light sleep exit: %s, time: %lld\n", g_wakeup_reasons[wc], tw);
+
+  esp_pm_wakeup_set_last_reason((int32_t)wc);
+  esp_pm_wakeup_set_last_time(tw);
+
+  return ESP_OK;
+}
+#endif /* CONFIG_ESPRESSIF_AUTO_SLEEP */
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: esp_pm_wakeup_set_last_reason
+ *
+ * Description:
+ *   Store the sleep exit wakeup cause after light sleep.
+ *
+ * Input Parameters:
+ *   reason - Value from esp_sleep_get_wakeup_cause().
+ *
+ * Returned Value:
+ *   None
+ *
+ ****************************************************************************/
+
+void esp_pm_wakeup_set_last_reason(int32_t reason)
+{
+  g_last_wakeup_reason = reason;
+}
+
+/****************************************************************************
+ * Name: esp_pm_wakeup_set_last_time
+ *
+ * Description:
+ *   Store the high-resolution timestamp (microseconds) for the last light
+ *   sleep exit, together with the cause from
+ *   esp_pm_wakeup_set_last_reason().
+ *
+ * Input Parameters:
+ *   time_us - Time from esp_hr_timer_time_us() at exit from light sleep.
+ *
+ * Returned Value:
+ *   None
+ *
+ ****************************************************************************/
+
+void esp_pm_wakeup_set_last_time(uint64_t time_us)
+{
+  g_last_wakeup_time = time_us;
+}
+
 /****************************************************************************
  * Name: esp_pm_sleep_enable_timer_wakeup
  *
@@ -424,15 +631,11 @@ static void IRAM_ATTR esp_pm_uart_wakeup_prepare(void)
  *
  ****************************************************************************/
 
-static void esp_pm_sleep_enable_timer_wakeup(uint64_t time_in_us)
+void esp_pm_sleep_enable_timer_wakeup(uint64_t time_in_us)
 {
   esp_sleep_enable_timer_wakeup(time_in_us);
 }
 
-/****************************************************************************
- * Public Functions
- ****************************************************************************/
-
 /****************************************************************************
  * Name: esp_pm_light_sleep_start
  *
@@ -510,6 +713,9 @@ void esp_pmstandby(uint64_t time_in_us)
 #ifdef CONFIG_PM_GPIO_WAKEUP
   int64_t gpio_mask;
 #endif
+#ifdef CONFIG_PM_EXT0_WAKEUP
+  esp_pm_ext0_wakeup_prepare();
+#endif
 #ifdef CONFIG_PM_EXT1_WAKEUP
   int64_t ext1_mask;
   esp_pm_ext1_wakeup_prepare();
@@ -518,6 +724,7 @@ void esp_pmstandby(uint64_t time_in_us)
   esp_pm_gpio_wakeup_prepare();
 #endif
 #ifdef CONFIG_PM_ULP_WAKEUP
+  esp_sleep_pd_config(ESP_PD_DOMAIN_RTC_PERIPH, ESP_PD_OPTION_ON);
   esp_sleep_enable_ulp_wakeup();
 #endif
 #ifdef CONFIG_PM_UART_WAKEUP
@@ -579,3 +786,94 @@ void esp_pmsleep(uint64_t time_in_us)
   esp_pm_sleep_enable_timer_wakeup(time_in_us);
   esp_pm_deep_sleep_start();
 }
+
+#ifdef CONFIG_ESPRESSIF_AUTO_SLEEP
+
+/****************************************************************************
+ * Name: esp_pmconfigure
+ *
+ * Description:
+ *   Configure power manager.
+ *
+ * Input Parameters:
+ *   None.
+ *
+ * Returned Value:
+ *   Returns OK on success; a negated errno value on failure.
+ *
+ ****************************************************************************/
+
+int esp_pmconfigure(void)
+{
+  int ret;
+  esp_err_t err = ESP_OK;
+#ifdef CONFIG_PM_EXT1_WAKEUP
+  int64_t ext1_mask;
+#endif
+#ifdef CONFIG_PM_GPIO_WAKEUP
+  int64_t gpio_mask;
+#endif
+  esp_pm_config_t pm_config =
+    {
+      .max_freq_mhz = CONFIG_ESPRESSIF_CPU_FREQ_MHZ,
+      .min_freq_mhz = CONFIG_ESPRESSIF_CPU_FREQ_MHZ,
+#ifdef CONFIG_ESPRESSIF_AUTO_SLEEP
+      .light_sleep_enable = true
+#endif
+    };
+
+  ret = esp_pm_configure(&pm_config);
+  if (ret != OK)
+    {
+      return ret;
+    }
+
+#ifdef CONFIG_PM_EXT0_WAKEUP
+  esp_pm_ext0_wakeup_prepare();
+#endif
+#ifdef CONFIG_PM_EXT1_WAKEUP
+  esp_pm_ext1_wakeup_prepare();
+#endif
+#ifdef CONFIG_PM_GPIO_WAKEUP
+  esp_pm_gpio_wakeup_prepare();
+#endif
+#ifdef CONFIG_PM_UART_WAKEUP
+  esp_pm_uart_wakeup_prepare();
+#endif /* CONFIG_PM_UART_WAKEUP */
+
+  err = esp_pm_register_skip_light_sleep_callback(
+          esp_pm_skip_light_sleep);
+  if (err != ESP_OK)
+    {
+      pwrerr("Failed to register skip light sleep callback: %d\n", err);
+      return -ENOMEM;
+    }
+
+  esp_pm_sleep_cbs_register_config_t sleep_cbs =
+    {
+      .enter_cb = NULL,
+      .exit_cb = esp_pm_light_sleep_exit_cb,
+      .enter_cb_user_arg = NULL,
+      .exit_cb_user_arg = NULL,
+      .enter_cb_prior = 0,
+      .exit_cb_prior = 0,
+    };
+
+  err = esp_pm_light_sleep_register_cbs(&sleep_cbs);
+  if (err != ESP_OK)
+    {
+      pwrerr("Failed to register light sleep callbacks: %d\n", err);
+      return -ENOMEM;
+    }
+
+  err =
+    esp_sleep_set_console_uart_handling_mode(ESP_SLEEP_ALWAYS_FLUSH_UART);
+  if (err != ESP_OK)
+    {
+      pwrerr("Failed to set console UART handling mode: %d\n", err);
+      return -ENOMEM;
+    }
+
+  return ret;
+}
+#endif /* CONFIG_ESPRESSIF_AUTO_SLEEP */

arch/risc-v/src/common/espressif/esp_pm.h

@@ -44,11 +44,32 @@ extern "C"
 #endif
 
 #ifdef CONFIG_PM
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+typedef bool (*skip_light_sleep_cb_t)(void);
 
 /****************************************************************************
  * Public Function Prototypes
  ****************************************************************************/
 
+/****************************************************************************
+ * Name: esp_pm_sleep_enable_timer_wakeup
+ *
+ * Description:
+ *   Configure wakeup interval
+ *
+ * Input Parameters:
+ *   time_in_us - Sleep duration in microseconds.
+ *
+ * Returned Value:
+ *   None
+ *
+ ****************************************************************************/
+
+void esp_pm_sleep_enable_timer_wakeup(uint64_t time_in_us);
+
 /****************************************************************************
  * Name: esp_pm_light_sleep_start
  *
@@ -114,6 +135,58 @@ void esp_pmstandby(uint64_t time_in_us);
 
 void esp_pmsleep(uint64_t time_in_us);
 
+/****************************************************************************
+ * Name: esp_pmconfigure
+ *
+ * Description:
+ *   Configure power manager.
+ *
+ * Input Parameters:
+ *   None
+ *
+ * Returned Value:
+ *   Returns OK on success; a negated errno value on failure.
+ *
+ ****************************************************************************/
+#ifdef CONFIG_ESPRESSIF_AUTO_SLEEP
+int esp_pmconfigure(void);
+#endif
+
+/****************************************************************************
+ * Name: esp_pm_wakeup_set_last_reason
+ *
+ * Description:
+ *   Store the sleep exit wakeup cause after light sleep.  Used with
+ *   esp_pm_wakeup_set_last_time() so the skip-light-sleep hook can
+ *   detect a recent UART wakeup.
+ *
+ * Input Parameters:
+ *   reason - Value from esp_sleep_get_wakeup_cause().
+ *
+ * Returned Value:
+ *   None
+ *
+ ****************************************************************************/
+
+void esp_pm_wakeup_set_last_reason(int32_t reason);
+
+/****************************************************************************
+ * Name: esp_pm_wakeup_set_last_time
+ *
+ * Description:
+ *   Store the high-resolution timestamp (microseconds) aligned with
+ *   the wakeup cause set by esp_pm_wakeup_set_last_reason().
+ *
+ * Input Parameters:
+ *   time_us - Time from esp_hr_timer_time_us() at exit from light sleep.
+ *
+ * Returned Value:
+ *   None
+ *
+ ****************************************************************************/
+
+void esp_pm_wakeup_set_last_time(uint64_t time_us);
+
 #endif /* CONFIG_PM */
 
 #ifdef __cplusplus

arch/risc-v/src/common/espressif/esp_retentionheap.c

@@ -0,0 +1,292 @@
+/****************************************************************************
+ * arch/risc-v/src/common/espressif/esp_retentionheap.c
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#ifdef CONFIG_ESPRESSIF_RETENTION_HEAP
+
+#include <debug.h>
+#include <stdint.h>
+#include <stddef.h>
+#include <sys/types.h>
+#include <nuttx/mm/mm.h>
+
+#include "esp_retentionheap.h"
+#include "soc/soc.h"
+#include "heap_memory_layout.h"
+#include "esp_heap_caps.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+#define APP_USABLE_DRAM_END (SOC_ROM_STACK_START - SOC_ROM_STACK_SIZE)
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+static struct mm_heap_s *g_retentionheap;
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: esp_retentionheap_find_region
+ *
+ * Description:
+ *   Find address of retention heap.
+ *
+ * Input Parameters:
+ *   rstart - Starting address of the region
+ *   rend   - Ending address of the region
+ *
+ * Returned Value:
+ *   True if region found; false otherwise
+ *
+ ****************************************************************************/
+
+bool esp_retentionheap_find_region(uintptr_t *rstart, uintptr_t *rend)
+{
+  for (size_t i = 0; i < soc_memory_region_count; i++)
+    {
+      const soc_memory_region_t *reg = &soc_memory_regions[i];
+      if ((soc_memory_types[reg->type].caps[0] & MALLOC_CAP_RETENTION) != 0
+          && (reg->startup_stack == false))
+        {
+          *rstart = (uintptr_t)reg->start;
+          *rend = *rstart + reg->size;
+          return true;
+        }
+    }
+
+  return false;
+}
+
+/****************************************************************************
+ * Name: esp_retentionheap_initialize
+ *
+ * Description:
+ *   Initialize the retention heap.
+ *
+ * Input Parameters:
+ *   None
+ *
+ * Returned Value:
+ *   None
+ *
+ ****************************************************************************/
+
+void esp_retentionheap_initialize(void)
+{
+  size_t sz;
+  uintptr_t rstart;
+  uintptr_t rend;
+
+  if (!esp_retentionheap_find_region(&rstart, &rend))
+    {
+      _warn("MALLOC_CAP_RETENTION region did not find\n");
+      return;
+    }
+
+  if (rend <= rstart)
+    {
+      return;
+    }
+
+  sz = (size_t)(rend - rstart);
+  g_retentionheap = mm_initialize("retention", (void *)rstart, sz);
+  if (g_retentionheap == NULL)
+    {
+      _err("retention heap mm_initialize failed size=%zu\n", sz);
+    }
+}
+
+/****************************************************************************
+ * Name: esp_retentionheap_malloc
+ *
+ * Description:
+ *   Allocate memory from the retention heap.
+ *
+ * Input Parameters:
+ *   size - Size to allocate memory in bytes
+ *
+ * Returned Value:
+ *   Valid address reference on success; NULL, otherwise.
+ *
+ ****************************************************************************/
+
+void *esp_retentionheap_malloc(size_t size)
+{
+  if (g_retentionheap == NULL)
+    {
+      return NULL;
+    }
+
+  return mm_malloc(g_retentionheap, size);
+}
+
+/****************************************************************************
+ * Name: esp_retentionheap_calloc
+ *
+ * Description:
+ *   Calculates the size of the allocation and allocate memory from
+ *   the retention heap.
+ *
+ * Input Parameters:
+ *   n         - Number of elements to allocate.
+ *   elem_size - Size of each element, in bytes.
+ *
+ * Returned Value:
+ *   Valid address reference on success; NULL, otherwise.
+ *
+ ****************************************************************************/
+
+void *esp_retentionheap_calloc(size_t n, size_t elem_size)
+{
+  if (g_retentionheap == NULL)
+    {
+      return NULL;
+    }
+
+  return mm_calloc(g_retentionheap, n, elem_size);
+}
+
+/****************************************************************************
+ * Name: esp_retentionheap_memalign
+ *
+ * Description:
+ *   memalign requests more than enough space from malloc, finds a region
+ *   within that chunk that meets the alignment request and then frees any
+ *   leading or trailing space.
+ *
+ *   The alignment argument must be a power of two (not checked). 8-byte
+ *   alignment is guaranteed by normal malloc calls.
+ *
+ * Input Parameters:
+ *   alignment - Required byte alignment; must be a power of two and usually
+ *               at least sizeof(void *).
+ *   size      - Number of bytes to allocate.
+ *
+ * Returned Value:
+ *   Valid address reference on success; NULL, otherwise.
+ *
+ ****************************************************************************/
+
+void *esp_retentionheap_memalign(size_t alignment, size_t size)
+{
+  if (g_retentionheap == NULL)
+    {
+      return NULL;
+    }
+
+  return mm_memalign(g_retentionheap, alignment, size);
+}
+
+/****************************************************************************
+ * Name: esp_retentionheap_realloc
+ *
+ * Description:
+ *   Reallocate memory from the retention heap.
+ *
+ * Input Parameters:
+ *   mem  - The address to reallocate
+ *   size - New requested size
+ *
+ * Returned Value:
+ *   Valid address reference on success; NULL, otherwise.
+ *
+ ****************************************************************************/
+
+void *esp_retentionheap_realloc(void *ptr, size_t size)
+{
+  if (g_retentionheap == NULL)
+    {
+      return NULL;
+    }
+
+  return mm_realloc(g_retentionheap, ptr, size);
+}
+
+/****************************************************************************
+ * Name: esp_retentionheap_free
+ *
+ * Description:
+ *   Free memory from the retention heap.
+ *
+ * Input Parameters:
+ *   mem - The address to free
+ *
+ * Returned Value:
+ *   None.
+ *
+ ****************************************************************************/
+
+void esp_retentionheap_free(void *mem)
+{
+  if (g_retentionheap == NULL || mem == NULL)
+    {
+      return;
+    }
+
+  mm_free(g_retentionheap, mem);
+}
+
+/****************************************************************************
+ * Name: esp_retentionheap_heapmember
+ *
+ * Description:
+ *   Check if an address lies in the retention heap.
+ *
+ * Parameters:
+ *   mem - The address to check
+ *
+ * Return Value:
+ *   True if the address is in the retention heap; false if not.
+ *
+ ****************************************************************************/
+
+bool esp_retentionheap_heapmember(void *mem)
+{
+  if (g_retentionheap == NULL || mem == NULL)
+    {
+      return false;
+    }
+
+  return mm_heapmember(g_retentionheap, mem);
+}
+
+/****************************************************************************
+ * Name: esp_retentionheap_malloc_size
+ *
+ * Description:
+ *   Get size of the allocated space in retention heap
+ *
+ * Input Parameters:
+ *   mem - The address to check
+ *
+ * Returned Value:
+ *   Size of allocated space related to address.
+ *
+ ****************************************************************************/
+
+size_t esp_retentionheap_malloc_size(void *mem)
+{
+  if (g_retentionheap == NULL || mem == NULL)
+    {
+      return 0;
+    }
+
+  return mm_malloc_size(g_retentionheap, mem);
+}
+
+#endif /* CONFIG_ESPRESSIF_RETENTION_HEAP */

arch/risc-v/src/common/espressif/esp_retentionheap.h

@@ -0,0 +1,222 @@
+/****************************************************************************
+ * arch/risc-v/src/common/espressif/esp_retentionheap.h
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you 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.
+ *
+ ****************************************************************************/
+
+#ifndef __ARCH_RISC_V_SRC_COMMON_ESPRESSIF_ESP_RETENTIONHEAP_H
+#define __ARCH_RISC_V_SRC_COMMON_ESPRESSIF_ESP_RETENTIONHEAP_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+/****************************************************************************
+ * Public Functions Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+#if defined(CONFIG_ESPRESSIF_RETENTION_HEAP)
+
+/****************************************************************************
+ * Name: esp_retentionheap_find_region
+ *
+ * Description:
+ *   Find address of retention heap.
+ *
+ * Input Parameters:
+ *   rstart - Starting address of the region
+ *   rend   - Ending address of the region
+ *
+ * Returned Value:
+ *   True if region found; false otherwise
+ *
+ ****************************************************************************/
+
+bool esp_retentionheap_find_region(uintptr_t *rstart, uintptr_t *rend);
+
+/****************************************************************************
+ * Name: esp_retentionheap_initialize
+ *
+ * Description:
+ *   Initialize the retention heap.
+ *
+ * Input Parameters:
+ *   None
+ *
+ * Returned Value:
+ *   None
+ *
+ ****************************************************************************/
+
+void esp_retentionheap_initialize(void);
+
+/****************************************************************************
+ * Name: esp_retentionheap_malloc
+ *
+ * Description:
+ *   Allocate memory from the retention heap.
+ *
+ * Input Parameters:
+ *   size - Size to allocate memory in bytes
+ *
+ * Returned Value:
+ *   Valid address reference on success; NULL, otherwise.
+ *
+ ****************************************************************************/
+
+void *esp_retentionheap_malloc(size_t size);
+
+/****************************************************************************
+ * Name: esp_retentionheap_calloc
+ *
+ * Description:
+ *   Calculates the size of the allocation and allocate memory from
+ *   the retention heap.
+ *
+ * Input Parameters:
+ *   n         - Number of elements to allocate.
+ *   elem_size - Size of each element, in bytes.
+ *
+ * Returned Value:
+ *   Valid address reference on success; NULL, otherwise.
+ *
+ ****************************************************************************/
+
+void *esp_retentionheap_calloc(size_t n, size_t elem_size);
+
+/****************************************************************************
+ * Name: esp_retentionheap_memalign
+ *
+ * Description:
+ *   memalign requests more than enough space from malloc, finds a region
+ *   within that chunk that meets the alignment request and then frees any
+ *   leading or trailing space.
+ *
+ *   The alignment argument must be a power of two (not checked). 8-byte
+ *   alignment is guaranteed by normal malloc calls.
+ *
+ * Input Parameters:
+ *   alignment - Required byte alignment; must be a power of two and usually
+ *               at least sizeof(void *).
+ *   size      - Number of bytes to allocate.
+ *
+ * Returned Value:
+ *   Valid address reference on success; NULL, otherwise.
+ *
+ ****************************************************************************/
+
+void *esp_retentionheap_memalign(size_t alignment, size_t size);
+
+/****************************************************************************
+ * Name: esp_retentionheap_realloc
+ *
+ * Description:
+ *   Reallocate memory from the retention heap.
+ *
+ * Input Parameters:
+ *   mem  - The address to reallocate
+ *   size - New requested size
+ *
+ * Returned Value:
+ *   Valid address reference on success; NULL, otherwise.
+ *
+ ****************************************************************************/
+
+void *esp_retentionheap_realloc(void *ptr, size_t size);
+
+/****************************************************************************
+ * Name: esp_retentionheap_free
+ *
+ * Description:
+ *   Free memory from the retention heap.
+ *
+ * Input Parameters:
+ *   mem - The address to free
+ *
+ * Returned Value:
+ *   None.
+ *
+ ****************************************************************************/
+
+void esp_retentionheap_free(void *mem);
+
+/****************************************************************************
+ * Name: esp_retentionheap_heapmember
+ *
+ * Description:
+ *   Check if an address lies in the retention heap.
+ *
+ * Parameters:
+ *   mem - The address to check
+ *
+ * Return Value:
+ *   True if the address is a member of the RTC heap. false if not
+ *
+ ****************************************************************************/
+
+bool esp_retentionheap_heapmember(void *mem);
+
+/****************************************************************************
+ * Name: esp_retentionheap_malloc_size
+ *
+ * Description:
+ *   Get size of the allocated space in retention heap
+ *
+ * Input Parameters:
+ *   mem - The address to check
+ *
+ * Returned Value:
+ *   Size of allocated space related to address.
+ *
+ ****************************************************************************/
+
+size_t esp_retentionheap_malloc_size(void *mem);
+
+#endif /* CONFIG_ESPRESSIF_RETENTION_HEAP */
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* __ASSEMBLY__ */
+
+#endif /* __ARCH_RISC_V_SRC_COMMON_ESPRESSIF_ESP_RETENTIONHEAP_H */

arch/risc-v/src/common/espressif/esp_tickless.c

@@ -117,7 +117,7 @@ static int esp_tickless_isr(int irq, void *context, void *arg)
  *
  * Returned Value:
  *   The time in system ticks remaining for idle.
- *   Zero means system is busy.
+ *   Zero means that the system is in idle mode without any timer running.
  *
  ****************************************************************************/
 

arch/risc-v/src/common/espressif/esp_tickless.h

@@ -46,7 +46,7 @@
  *
  * Returned Value:
  *   The time in system ticks remaining for idle.
- *   Zero means system is busy.
+ *   Zero means that the system is in idle mode without any timer running.
  *
  ****************************************************************************/
 

arch/risc-v/src/esp32c3/hal_esp32c3.cmake

@@ -64,6 +64,7 @@ target_include_directories(
     ${ESP_HAL_3RDPARTY_REPO}/components/upper_hal_gpio/include
     ${ESP_HAL_3RDPARTY_REPO}/components/upper_hal_rmt/include
     ${ESP_HAL_3RDPARTY_REPO}/components/upper_hal_rmt/src
+    ${ESP_HAL_3RDPARTY_REPO}/components/upper_hal_uart/include
     # ESP HAL RMT (hal/rmt_hal.h)
     ${ESP_HAL_3RDPARTY_REPO}/components/esp_hal_rmt/include
     ${ESP_HAL_3RDPARTY_REPO}/components/esp_hal_rmt/${CHIP_SERIES}/include
@@ -89,6 +90,7 @@ target_include_directories(
     ${ESP_HAL_3RDPARTY_REPO}/components/esp_phy/${CHIP_SERIES}/include
     ${ESP_HAL_3RDPARTY_REPO}/components/esp_phy/include
     # ESP PM
+    ${ESP_HAL_3RDPARTY_REPO}/components/esp_pm
     ${ESP_HAL_3RDPARTY_REPO}/components/esp_pm/include
     # ESP ROM
     ${ESP_HAL_3RDPARTY_REPO}/components/esp_rom
@@ -302,7 +304,7 @@ list(
   ${ESP_HAL_3RDPARTY_REPO}/components/esp_mm/esp_mmu_map.c
   ${ESP_HAL_3RDPARTY_REPO}/components/esp_mm/esp_cache_utils.c
   ${ESP_HAL_3RDPARTY_REPO}/components/esp_mm/port/${CHIP_SERIES}/ext_mem_layout.c
-)
+  ${ESP_HAL_3RDPARTY_REPO}/components/heap/port/${CHIP_SERIES}/memory_layout.c)
 
 # ESP PHY sources
 list(
@@ -313,6 +315,10 @@ list(
   ${ESP_HAL_3RDPARTY_REPO}/components/esp_phy/src/phy_init.c
   ${ESP_HAL_3RDPARTY_REPO}/components/esp_phy/${CHIP_SERIES}/phy_init_data.c)
 
+# ESP PM sources
+list(APPEND HAL_SRCS ${ESP_HAL_3RDPARTY_REPO}/components/esp_pm/pm_locks.c
+     ${ESP_HAL_3RDPARTY_REPO}/components/esp_pm/pm_impl.c)
+
 # ESP ROM sources
 list(
   APPEND
@@ -408,7 +414,8 @@ list(
   HAL_SRCS
   ${ESP_HAL_3RDPARTY_REPO}/components/riscv/instruction_decode.c
   ${ESP_HAL_3RDPARTY_REPO}/components/riscv/interrupt.c
-  ${ESP_HAL_3RDPARTY_REPO}/components/riscv/interrupt_intc.c)
+  ${ESP_HAL_3RDPARTY_REPO}/components/riscv/interrupt_intc.c
+  ${ESP_HAL_3RDPARTY_REPO}/components/riscv/rv_utils.c)
 
 # SPI Flash sources
 list(
@@ -478,7 +485,8 @@ list(
   ${ESP_HAL_3RDPARTY_REPO}/components/upper_hal_rmt/src/rmt_encoder_copy.c
   ${ESP_HAL_3RDPARTY_REPO}/components/upper_hal_rmt/src/rmt_encoder_simple.c
   ${ESP_HAL_3RDPARTY_REPO}/components/upper_hal_rmt/src/rmt_rx.c
-  ${ESP_HAL_3RDPARTY_REPO}/components/upper_hal_rmt/src/rmt_tx.c)
+  ${ESP_HAL_3RDPARTY_REPO}/components/upper_hal_rmt/src/rmt_tx.c
+  ${ESP_HAL_3RDPARTY_REPO}/components/upper_hal_uart/src/uart_wakeup.c)
 
 # Bootloader flash encrypt source
 list(APPEND HAL_SRCS

arch/risc-v/src/esp32c3/hal_esp32c3.mk

@@ -104,6 +104,7 @@ INCLUDES += $(INCDIR_PREFIX)$(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY
 INCLUDES += $(INCDIR_PREFIX)$(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_mm$(DELIM)include
 INCLUDES += $(INCDIR_PREFIX)$(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_phy$(DELIM)$(CHIP_SERIES)$(DELIM)include
 INCLUDES += $(INCDIR_PREFIX)$(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_phy$(DELIM)include
+INCLUDES += $(INCDIR_PREFIX)$(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_pm
 INCLUDES += $(INCDIR_PREFIX)$(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_pm$(DELIM)include
 INCLUDES += $(INCDIR_PREFIX)$(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_rom
 INCLUDES += $(INCDIR_PREFIX)$(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_rom$(DELIM)include
@@ -145,6 +146,7 @@ INCLUDES += $(INCDIR_PREFIX)$(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY
 INCLUDES += $(INCDIR_PREFIX)$(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)upper_hal_gpio$(DELIM)include
 INCLUDES += $(INCDIR_PREFIX)$(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)upper_hal_rmt$(DELIM)include
 INCLUDES += $(INCDIR_PREFIX)$(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)upper_hal_rmt$(DELIM)src
+INCLUDES += $(INCDIR_PREFIX)$(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)upper_hal_uart$(DELIM)include
 INCLUDES += $(INCDIR_PREFIX)$(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)nuttx$(DELIM)src$(DELIM)components$(DELIM)esp_libc$(DELIM)platform_include
 
 ifeq ($(CONFIG_ESPRESSIF_SIMPLE_BOOT),y)
@@ -225,6 +227,8 @@ CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_phy$(DELIM)src$(DELIM)phy_common.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_phy$(DELIM)src$(DELIM)phy_init.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_phy$(DELIM)$(CHIP_SERIES)$(DELIM)phy_init_data.c
+CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_pm$(DELIM)pm_locks.c
+CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_pm$(DELIM)pm_impl.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_rom$(DELIM)patches$(DELIM)esp_rom_sys.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_rom$(DELIM)patches$(DELIM)esp_rom_print.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_rom$(DELIM)patches$(DELIM)esp_rom_crc.c
@@ -280,6 +284,7 @@ CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_hal_wdt$(DELIM)xt_wdt_hal.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_hal_clock$(DELIM)$(CHIP_SERIES)$(DELIM)clk_tree_hal.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)hal$(DELIM)$(CHIP_SERIES)$(DELIM)efuse_hal.c
+CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)heap$(DELIM)port$(DELIM)${CHIP_SERIES}$(DELIM)memory_layout.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)log$(DELIM)src$(DELIM)log.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)log$(DELIM)src$(DELIM)log_level$(DELIM)log_level.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)log$(DELIM)src$(DELIM)log_level$(DELIM)tag_log_level$(DELIM)tag_log_level.c
@@ -309,6 +314,7 @@ CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)spi_
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)spi_flash$(DELIM)flash_mmap.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)spi_flash$(DELIM)flash_brownout_hook.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)spi_flash$(DELIM)cache_utils.c
+CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)riscv$(DELIM)rv_utils.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)soc$(DELIM)lldesc.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_hal_ana_conv$(DELIM)$(CHIP_SERIES)$(DELIM)adc_periph.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_hal_gpio$(DELIM)$(CHIP_SERIES)$(DELIM)dedic_gpio_periph.c
@@ -341,6 +347,7 @@ CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)uppe
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)upper_hal_rmt$(DELIM)src$(DELIM)rmt_encoder_simple.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)upper_hal_rmt$(DELIM)src$(DELIM)rmt_rx.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)upper_hal_rmt$(DELIM)src$(DELIM)rmt_tx.c
+CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)upper_hal_uart$(DELIM)src$(DELIM)uart_wakeup.c
 
 # Bootloader files
 

arch/risc-v/src/esp32c6/hal_esp32c6.cmake

@@ -112,6 +112,7 @@ target_include_directories(
     ${ESP_HAL_3RDPARTY_REPO}/components/esp_mm/include
     ${ESP_HAL_3RDPARTY_REPO}/components/esp_phy/${CHIP_SERIES}/include
     ${ESP_HAL_3RDPARTY_REPO}/components/esp_phy/include
+    ${ESP_HAL_3RDPARTY_REPO}/components/esp_pm
     ${ESP_HAL_3RDPARTY_REPO}/components/esp_pm/include
     ${ESP_HAL_3RDPARTY_REPO}/components/esp_rom
     ${ESP_HAL_3RDPARTY_REPO}/components/esp_rom/include
@@ -317,7 +318,8 @@ list(
   ${ESP_HAL_3RDPARTY_REPO}/components/esp_phy/${CHIP_SERIES}/phy_init_data.c)
 
 # ESP PM
-list(APPEND HAL_SRCS ${ESP_HAL_3RDPARTY_REPO}/components/esp_pm/pm_impl.c)
+list(APPEND HAL_SRCS ${ESP_HAL_3RDPARTY_REPO}/components/esp_pm/pm_locks.c
+     ${ESP_HAL_3RDPARTY_REPO}/components/esp_pm/pm_impl.c)
 
 # ESP ROM
 list(
@@ -497,7 +499,8 @@ list(
   ${ESP_HAL_3RDPARTY_REPO}/components/upper_hal_rmt/src/rmt_rx.c
   ${ESP_HAL_3RDPARTY_REPO}/components/upper_hal_rmt/src/rmt_tx.c
   ${ESP_HAL_3RDPARTY_REPO}/components/upper_hal_gpio/src/gpio.c
-  ${ESP_HAL_3RDPARTY_REPO}/components/upper_hal_gpio/src/rtc_io.c)
+  ${ESP_HAL_3RDPARTY_REPO}/components/upper_hal_gpio/src/rtc_io.c
+  ${ESP_HAL_3RDPARTY_REPO}/components/upper_hal_uart/src/uart_wakeup.c)
 
 # Sleep ASM
 list(

arch/risc-v/src/esp32c6/hal_esp32c6.mk

@@ -100,6 +100,7 @@ INCLUDES += $(INCDIR_PREFIX)$(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY
 INCLUDES += $(INCDIR_PREFIX)$(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_mm$(DELIM)include
 INCLUDES += $(INCDIR_PREFIX)$(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_phy$(DELIM)$(CHIP_SERIES)$(DELIM)include
 INCLUDES += $(INCDIR_PREFIX)$(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_phy$(DELIM)include
+INCLUDES += $(INCDIR_PREFIX)$(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_pm
 INCLUDES += $(INCDIR_PREFIX)$(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_pm$(DELIM)include
 INCLUDES += $(INCDIR_PREFIX)$(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_rom
 INCLUDES += $(INCDIR_PREFIX)$(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_rom$(DELIM)include
@@ -250,6 +251,7 @@ CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_phy$(DELIM)src$(DELIM)phy_common.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_phy$(DELIM)src$(DELIM)phy_init.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_phy$(DELIM)$(CHIP_SERIES)$(DELIM)phy_init_data.c
+CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_pm$(DELIM)pm_locks.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_pm$(DELIM)pm_impl.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_rom$(DELIM)patches$(DELIM)esp_rom_sys.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_rom$(DELIM)patches$(DELIM)esp_rom_print.c
@@ -373,9 +375,9 @@ CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)uppe
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)upper_hal_rmt$(DELIM)src$(DELIM)rmt_tx.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)upper_hal_gpio$(DELIM)src$(DELIM)gpio.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)upper_hal_gpio$(DELIM)src$(DELIM)rtc_io.c
+CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)upper_hal_uart$(DELIM)src$(DELIM)uart_wakeup.c
 
 CHIP_ASRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_hw_support$(DELIM)lowpower$(DELIM)port$(DELIM)esp32c6$(DELIM)sleep_cpu_asm.S
-
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)nuttx$(DELIM)src$(DELIM)platform$(DELIM)os.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)nuttx$(DELIM)src$(DELIM)heap_caps.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)nuttx$(DELIM)src$(DELIM)components$(DELIM)newlib$(DELIM)newlib$(DELIM)libc$(DELIM)misc$(DELIM)init.c

arch/risc-v/src/esp32h2/hal_esp32h2.cmake

@@ -111,6 +111,7 @@ target_include_directories(
     ${ESP_HAL_3RDPARTY_REPO}/components/esp_hw_support/port/${CHIP_SERIES}/private_include
     ${ESP_HAL_3RDPARTY_REPO}/components/esp_hw_support/power_supply/include
     ${ESP_HAL_3RDPARTY_REPO}/components/esp_mm/include
+    ${ESP_HAL_3RDPARTY_REPO}/components/esp_pm
     ${ESP_HAL_3RDPARTY_REPO}/components/esp_pm/include
     ${ESP_HAL_3RDPARTY_REPO}/components/esp_rom
     ${ESP_HAL_3RDPARTY_REPO}/components/esp_rom/include
@@ -304,7 +305,8 @@ list(
 )
 
 # ESP PM
-list(APPEND HAL_SRCS ${ESP_HAL_3RDPARTY_REPO}/components/esp_pm/pm_impl.c)
+list(APPEND HAL_SRCS ${ESP_HAL_3RDPARTY_REPO}/components/esp_pm/pm_locks.c
+     ${ESP_HAL_3RDPARTY_REPO}/components/esp_pm/pm_impl.c)
 
 # ESP ROM
 list(
@@ -474,7 +476,8 @@ list(
   ${ESP_HAL_3RDPARTY_REPO}/components/upper_hal_rmt/src/rmt_rx.c
   ${ESP_HAL_3RDPARTY_REPO}/components/upper_hal_rmt/src/rmt_tx.c
   ${ESP_HAL_3RDPARTY_REPO}/components/upper_hal_gpio/src/gpio.c
-  ${ESP_HAL_3RDPARTY_REPO}/components/upper_hal_gpio/src/rtc_io.c)
+  ${ESP_HAL_3RDPARTY_REPO}/components/upper_hal_gpio/src/rtc_io.c
+  ${ESP_HAL_3RDPARTY_REPO}/components/upper_hal_uart/src/uart_wakeup.c)
 
 # Sleep ASM
 list(

arch/risc-v/src/esp32h2/hal_esp32h2.mk

@@ -98,6 +98,7 @@ INCLUDES += $(INCDIR_PREFIX)$(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY
 INCLUDES += $(INCDIR_PREFIX)$(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_hw_support$(DELIM)port$(DELIM)$(CHIP_SERIES)$(DELIM)private_include
 INCLUDES += $(INCDIR_PREFIX)$(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_hw_support$(DELIM)power_supply$(DELIM)include
 INCLUDES += $(INCDIR_PREFIX)$(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_mm$(DELIM)include
+INCLUDES += $(INCDIR_PREFIX)$(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_pm
 INCLUDES += $(INCDIR_PREFIX)$(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_pm$(DELIM)include
 INCLUDES += $(INCDIR_PREFIX)$(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_rom
 INCLUDES += $(INCDIR_PREFIX)$(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_rom$(DELIM)include
@@ -231,6 +232,8 @@ CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_mm$(DELIM)esp_mmu_map.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_mm$(DELIM)esp_cache_utils.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_mm$(DELIM)port$(DELIM)$(CHIP_SERIES)$(DELIM)ext_mem_layout.c
+CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_pm$(DELIM)pm_locks.c
+CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_pm$(DELIM)pm_impl.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_rom$(DELIM)patches$(DELIM)esp_rom_sys.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_rom$(DELIM)patches$(DELIM)esp_rom_print.c
 CHIP_CSRCS += chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_rom$(DELIM)patches$(DELIM)esp_rom_crc.c

arch/risc-v/src/esp32p4/hal_esp32p4.cmake

@@ -116,6 +116,7 @@ set(ESP32P4_INCLUDES
     ${ESP_HAL_3RDPARTY_REPO}/components/esp_hw_support/power_supply/include
     ${ESP_HAL_3RDPARTY_REPO}/components/esp_libc/priv_include
     ${ESP_HAL_3RDPARTY_REPO}/components/esp_mm/include
+    ${ESP_HAL_3RDPARTY_REPO}/components/esp_pm
     ${ESP_HAL_3RDPARTY_REPO}/components/esp_pm/include
     ${ESP_HAL_3RDPARTY_REPO}/components/esp_rom/${CHIP_SERIES}
     ${ESP_HAL_3RDPARTY_REPO}/components/esp_rom/${CHIP_SERIES}/include

arch/risc-v/src/esp32p4/hal_esp32p4.mk

@@ -106,6 +106,7 @@ INCLUDES += $(INCDIR_PREFIX)$(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY
 INCLUDES += $(INCDIR_PREFIX)$(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_hw_support$(DELIM)power_supply$(DELIM)include
 INCLUDES += $(INCDIR_PREFIX)$(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_libc$(DELIM)priv_include
 INCLUDES += $(INCDIR_PREFIX)$(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_mm$(DELIM)include
+INCLUDES += $(INCDIR_PREFIX)$(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_pm
 INCLUDES += $(INCDIR_PREFIX)$(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_pm$(DELIM)include
 INCLUDES += $(INCDIR_PREFIX)$(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_rom$(DELIM)$(CHIP_SERIES)
 INCLUDES += $(INCDIR_PREFIX)$(ARCH_SRCDIR)$(DELIM)chip$(DELIM)$(ESP_HAL_3RDPARTY_REPO)$(DELIM)components$(DELIM)esp_rom$(DELIM)$(CHIP_SERIES)$(DELIM)include

arch/xtensa/src/esp32/Make.defs

@@ -194,7 +194,7 @@ endif
 
 ESP_HAL_3RDPARTY_REPO   = esp-hal-3rdparty
 ifndef ESP_HAL_3RDPARTY_VERSION
-	ESP_HAL_3RDPARTY_VERSION = 6c272b562a73107a852d44b9c6fb5df57245cbd7
+	ESP_HAL_3RDPARTY_VERSION = b7e51db97a3f9dc82d3b3524d2bad298ba1e2647
 endif
 
 ifndef ESP_HAL_3RDPARTY_URL

arch/xtensa/src/esp32s2/Make.defs

@@ -127,7 +127,7 @@ endif
 
 ESP_HAL_3RDPARTY_REPO   = esp-hal-3rdparty
 ifndef ESP_HAL_3RDPARTY_VERSION
-	ESP_HAL_3RDPARTY_VERSION = 6c272b562a73107a852d44b9c6fb5df57245cbd7
+	ESP_HAL_3RDPARTY_VERSION = b7e51db97a3f9dc82d3b3524d2bad298ba1e2647
 endif
 
 ifndef ESP_HAL_3RDPARTY_URL

arch/xtensa/src/esp32s3/Make.defs

@@ -192,7 +192,7 @@ endif
 
 ESP_HAL_3RDPARTY_REPO = esp-hal-3rdparty
 ifndef ESP_HAL_3RDPARTY_VERSION
-	ESP_HAL_3RDPARTY_VERSION = 6c272b562a73107a852d44b9c6fb5df57245cbd7
+	ESP_HAL_3RDPARTY_VERSION = b7e51db97a3f9dc82d3b3524d2bad298ba1e2647
 endif
 
 ifndef ESP_HAL_3RDPARTY_URL

boards/risc-v/esp32c3/esp32c3-devkit/src/esp32c3_bringup.c

@@ -457,6 +457,16 @@ int esp_bringup(void)
     }
 #endif /* CONFIG_ESPRESSIF_LEDC */
 
+#ifdef CONFIG_ESPRESSIF_AUTO_SLEEP
+  /* Configure PM */
+
+  ret = esp_pmconfigure();
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "ERROR: esp_pmconfigure failed: %d\n", ret);
+    }
+#endif
+
 #ifdef CONFIG_SYSTEM_NXDIAG_ESPRESSIF_CHIP_WO_TOOL
   ret = esp_nxdiag_initialize();
   if (ret < 0)