esp32[c3|c6|h2]: Add efuse support

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

@@ -389,6 +389,12 @@ config ESPRESSIF_DMA
 	default n
 	select ARCH_DMA
 
+config ESPRESSIF_EFUSE
+	bool "EFUSE support"
+	default n
+	---help---
+		Enable efuse support.
+
 config ESPRESSIF_HR_TIMER
 	bool
 	default RTC_DRIVER

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

@@ -73,6 +73,10 @@ ifeq ($(CONFIG_ESPRESSIF_DMA),y)
 	CHIP_CSRCS += esp_dma.c
 endif
 
+ifeq ($(CONFIG_ESPRESSIF_EFUSE),y)
+	CHIP_CSRCS += esp_efuse.c
+endif
+
 ifeq ($(CONFIG_ESPRESSIF_TWAI),y)
 	CHIP_CSRCS += esp_twai.c
 endif
@@ -152,7 +156,7 @@ endif
 
 ESP_HAL_3RDPARTY_REPO   = esp-hal-3rdparty
 ifndef ESP_HAL_3RDPARTY_VERSION
-	ESP_HAL_3RDPARTY_VERSION = e3899a2324c8e326db20f99f208e890fdd7a5b92
+	ESP_HAL_3RDPARTY_VERSION = 87ccbf88b6fd490dae1993524e70f51bb2ea181d
 endif
 
 ifndef ESP_HAL_3RDPARTY_URL

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

@@ -0,0 +1,260 @@
+/****************************************************************************
+ * arch/risc-v/src/common/espressif/esp_efuse.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 <stdlib.h>
+#include <debug.h>
+#include <debug.h>
+#include <errno.h>
+#include <assert.h>
+#include <string.h>
+#include <sys/param.h>
+#include <nuttx/efuse/efuse.h>
+#include <nuttx/irq.h>
+#include <nuttx/kmalloc.h>
+#include <nuttx/efuse/efuse.h>
+
+#include "chip.h"
+
+#include "riscv_internal.h"
+#include "espressif/esp_efuse.h"
+
+#include "esp_efuse.h"
+#include "esp_clk.h"
+#include "hal/efuse_hal.h"
+#include "esp_efuse_table.h"
+#include "esp_efuse_chip.h"
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+struct esp_efuse_lowerhalf_s
+{
+  const struct efuse_ops_s *ops; /* Lower half operations */
+  void *upper;                   /* Pointer to efuse_upperhalf_s */
+};
+
+/****************************************************************************
+ * Private Functions Prototypes
+ ****************************************************************************/
+
+/* "Lower half" driver methods */
+
+static int esp_efuse_lowerhalf_read(struct efuse_lowerhalf_s *lower,
+                                    const efuse_desc_t *field[],
+                                    uint8_t *data, size_t bits_len);
+static int esp_efuse_lowerhalf_write(struct efuse_lowerhalf_s *lower,
+                                     const efuse_desc_t *field[],
+                                     const uint8_t *data,
+                                     size_t bits_len);
+static int esp_efuse_lowerhalf_ioctl(struct efuse_lowerhalf_s *lower,
+                                     int cmd, unsigned long arg);
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/* "Lower half" driver methods */
+
+static const struct efuse_ops_s g_esp_efuse_ops =
+{
+  .read_field   = esp_efuse_lowerhalf_read,
+  .write_field  = esp_efuse_lowerhalf_write,
+  .ioctl        = esp_efuse_lowerhalf_ioctl,
+};
+
+/* EFUSE lower-half */
+
+static struct esp_efuse_lowerhalf_s g_esp_efuse_lowerhalf =
+{
+  .ops = &g_esp_efuse_ops,
+  .upper = NULL,
+};
+
+/****************************************************************************
+ * Private functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: esp_efuse_lowerhalf_read
+ *
+ * Description:
+ *   Read value from EFUSE, writing it into an array.
+ *
+ * Input Parameters:
+ *   lower    - A pointer the publicly visible representation of
+ *              the "lower-half" driver state structure
+ *   field    - A pointer to describing the fields of efuse
+ *   dst      - A pointer to array that contains the data for reading
+ *   bits_len - The number of bits required to read
+ *
+ * Returned Value:
+ *   Zero (OK) is returned on success. Otherwise -1 (ERROR).
+ *
+ ****************************************************************************/
+
+static int esp_efuse_lowerhalf_read(struct efuse_lowerhalf_s *lower,
+                                    const efuse_desc_t *field[],
+                                    uint8_t *data, size_t bits_len)
+{
+  int ret = OK;
+
+  /* Read the requested field */
+
+  ret = esp_efuse_read_field_blob((const esp_efuse_desc_t**)field,
+                                  data,
+                                  bits_len);
+
+  return ret;
+}
+
+/****************************************************************************
+ * Name: esp_efuse_lowerhalf_write
+ *
+ * Description:
+ *   Write array to EFUSE.
+ *
+ * Input Parameters:
+ *   lower    - A pointer the publicly visible representation of
+ *              the "lower-half" driver state structure
+ *   field    - A pointer to describing the fields of efuse
+ *   data     - A pointer to array that contains the data for writing
+ *   bits_len - The number of bits required to write
+ *
+ * Returned Value:
+ *   Zero (OK) is returned on success. Otherwise -1 (ERROR).
+ *
+ ****************************************************************************/
+
+static int esp_efuse_lowerhalf_write(struct efuse_lowerhalf_s *lower,
+                                     const efuse_desc_t *field[],
+                                     const uint8_t *data,
+                                     size_t bits_len)
+{
+  irqstate_t flags;
+  int ret = OK;
+
+  flags = enter_critical_section();
+
+  ret = esp_efuse_write_field_blob((const esp_efuse_desc_t**)field,
+                                   data,
+                                   bits_len);
+
+  leave_critical_section(flags);
+
+  if (ret != OK)
+    {
+      return ERROR;
+    }
+
+  return ret;
+}
+
+/****************************************************************************
+ * Name: esp_efuse_lowerhalf_ioctl
+ *
+ * Description:
+ *   Initialize the efuse driver. The efuse is initialized
+ *   and registered as 'devpath'.
+ *
+ * Input Parameters:
+ *   lower - A pointer the publicly visible representation of
+ *                  the "lower-half" driver state structure
+ *   cmd   - The ioctl command value
+ *   arg   - The optional argument that accompanies the 'cmd'
+ *
+ * Returned Value:
+ *   Zero (OK) is returned on success. Otherwise -1 (ERROR).
+ *
+ ****************************************************************************/
+
+static int esp_efuse_lowerhalf_ioctl(struct efuse_lowerhalf_s *lower,
+                                     int cmd, unsigned long arg)
+{
+  int ret = OK;
+
+  switch (cmd)
+    {
+      /* We don't have proprietary EFUSE ioctls */
+
+      default:
+        {
+          minfo("Unrecognized cmd: %d\n", cmd);
+          ret = -ENOTTY;
+        }
+        break;
+    }
+
+  return ret;
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: esp_efuse_initialize
+ *
+ * Description:
+ *   Initialize the efuse driver. The efuse is initialized
+ *   and registered as 'devpath'.
+ *
+ * Input Parameters:
+ *   devpath - The full path to the efuse device.
+ *             This should be of the form /dev/efuse
+ *
+ * Returned Value:
+ *   Zero (OK) is returned on success. Otherwise -1 (ERROR).
+ *
+ ****************************************************************************/
+
+int esp_efuse_initialize(const char *devpath)
+{
+  struct esp_efuse_lowerhalf_s *lower = NULL;
+  int ret = OK;
+
+  DEBUGASSERT(devpath != NULL);
+
+  lower = &g_esp_efuse_lowerhalf;
+
+  /* Register the efuse upper driver */
+
+  lower->upper = efuse_register(devpath,
+                                (struct efuse_lowerhalf_s *)lower);
+
+  if (lower->upper == NULL)
+    {
+      /* The actual cause of the failure may have been a failure to allocate
+       * perhaps a failure to register the efuse driver (such as if the
+       * 'devpath' were not unique).  We know here but we return EEXIST to
+       * indicate the failure (implying the non-unique devpath).
+       */
+
+      ret = -EEXIST;
+    }
+
+  return ret;
+}

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

@@ -0,0 +1,71 @@
+/****************************************************************************
+ * arch/risc-v/src/common/espressif/esp_efuse.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_RISCV_SRC_COMMON_ESPRESSIF_ESP_EFUSE_H
+#define __ARCH_RISCV_SRC_COMMON_ESPRESSIF_ESP_EFUSE_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/efuse/efuse.h>
+
+#ifndef __ASSEMBLY__
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C"
+{
+#else
+#define EXTERN extern
+#endif
+
+/****************************************************************************
+ * Public Functions Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: esp_efuse_initialize
+ *
+ * Description:
+ *   Initialize the efuse driver. The efuse is initialized
+ *   and registered as 'devpath'.
+ *
+ * Input Parameters:
+ *   devpath        - The full path to the efuse device.
+ *                    This should be of the form /dev/efuse
+ *
+ * Returned Value:
+ *   Zero (OK) is returned on success. Otherwise -1 (ERROR).
+ *
+ ****************************************************************************/
+
+int esp_efuse_initialize(const char *devpath);
+
+#ifdef __cplusplus
+}
+#endif
+#undef EXTERN
+
+#endif /* __ASSEMBLY__ */
+#endif /* __ARCH_RISCV_SRC_COMMON_ESPRESSIF_ESP_EFUSE_H */

arch/xtensa/src/esp32/Make.defs

@@ -218,7 +218,7 @@ endif
 
 ESP_HAL_3RDPARTY_REPO   = esp-hal-3rdparty
 ifndef ESP_HAL_3RDPARTY_VERSION
-	ESP_HAL_3RDPARTY_VERSION = e3899a2324c8e326db20f99f208e890fdd7a5b92
+	ESP_HAL_3RDPARTY_VERSION = 87ccbf88b6fd490dae1993524e70f51bb2ea181d
 endif
 
 ifndef ESP_HAL_3RDPARTY_URL

arch/xtensa/src/esp32s2/Make.defs

@@ -147,7 +147,7 @@ endif
 
 ESP_HAL_3RDPARTY_REPO   = esp-hal-3rdparty
 ifndef ESP_HAL_3RDPARTY_VERSION
-	ESP_HAL_3RDPARTY_VERSION = e3899a2324c8e326db20f99f208e890fdd7a5b92
+	ESP_HAL_3RDPARTY_VERSION = 87ccbf88b6fd490dae1993524e70f51bb2ea181d
 endif
 
 ifndef ESP_HAL_3RDPARTY_URL

arch/xtensa/src/esp32s3/Make.defs

@@ -220,7 +220,7 @@ endif
 
 ESP_HAL_3RDPARTY_REPO = esp-hal-3rdparty
 ifndef ESP_HAL_3RDPARTY_VERSION
-	ESP_HAL_3RDPARTY_VERSION = e3899a2324c8e326db20f99f208e890fdd7a5b92
+	ESP_HAL_3RDPARTY_VERSION = 87ccbf88b6fd490dae1993524e70f51bb2ea181d
 endif
 
 ifndef ESP_HAL_3RDPARTY_URL

boards/risc-v/esp32c3/esp32c3-generic/configs/efuse/defconfig

@@ -0,0 +1,48 @@
+#
+# This file is autogenerated: PLEASE DO NOT EDIT IT.
+#
+# You can use "make menuconfig" to make any modifications to the installed .config file.
+# You can then do "make savedefconfig" to generate a new defconfig file that includes your
+# modifications.
+#
+# CONFIG_NSH_ARGCAT is not set
+# CONFIG_NSH_CMDOPT_HEXDUMP is not set
+CONFIG_ARCH="risc-v"
+CONFIG_ARCH_BOARD="esp32c3-generic"
+CONFIG_ARCH_BOARD_COMMON=y
+CONFIG_ARCH_BOARD_ESP32C3_GENERIC=y
+CONFIG_ARCH_CHIP="esp32c3"
+CONFIG_ARCH_CHIP_ESP32C3_GENERIC=y
+CONFIG_ARCH_INTERRUPTSTACK=1536
+CONFIG_ARCH_RISCV=y
+CONFIG_ARCH_STACKDUMP=y
+CONFIG_BOARDCTL_RESET=y
+CONFIG_BOARD_LOOPSPERMSEC=15000
+CONFIG_BUILTIN=y
+CONFIG_DEV_ZERO=y
+CONFIG_EFUSE=y
+CONFIG_ESPRESSIF_EFUSE=y
+CONFIG_FS_PROCFS=y
+CONFIG_IDLETHREAD_STACKSIZE=2048
+CONFIG_INIT_ENTRYPOINT="nsh_main"
+CONFIG_INTELHEX_BINARY=y
+CONFIG_LIBC_PERROR_STDOUT=y
+CONFIG_LIBC_STRERROR=y
+CONFIG_NFILE_DESCRIPTORS_PER_BLOCK=6
+CONFIG_NSH_ARCHINIT=y
+CONFIG_NSH_BUILTIN_APPS=y
+CONFIG_NSH_FILEIOSIZE=512
+CONFIG_NSH_READLINE=y
+CONFIG_NSH_STRERROR=y
+CONFIG_PREALLOC_TIMERS=0
+CONFIG_RR_INTERVAL=200
+CONFIG_SCHED_BACKTRACE=y
+CONFIG_SCHED_WAITPID=y
+CONFIG_START_DAY=29
+CONFIG_START_MONTH=11
+CONFIG_START_YEAR=2019
+CONFIG_SYSTEM_DUMPSTACK=y
+CONFIG_SYSTEM_NSH=y
+CONFIG_TESTING_GETPRIME=y
+CONFIG_TESTING_OSTEST=y
+CONFIG_UART0_SERIAL_CONSOLE=y

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

@@ -65,6 +65,10 @@
 #  include <nuttx/input/buttons.h>
 #endif
 
+#ifdef CONFIG_ESPRESSIF_EFUSE
+#  include "espressif/esp_efuse.h"
+#endif
+
 #ifdef CONFIG_ESP_RMT
 #  include "esp_board_rmt.h"
 #endif
@@ -157,6 +161,14 @@ int esp_bringup(void)
     }
 #endif
 
+#if defined(CONFIG_ESPRESSIF_EFUSE)
+  ret = esp_efuse_initialize("/dev/efuse");
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "ERROR: Failed to init EFUSE: %d\n", ret);
+    }
+#endif
+
 #ifdef CONFIG_ESPRESSIF_MWDT0
   ret = esp_wdt_initialize("/dev/watchdog0", ESP_WDT_MWDT0);
   if (ret < 0)

boards/risc-v/esp32c6/esp32c6-devkitc/configs/efuse/defconfig

@@ -0,0 +1,50 @@
+#
+# This file is autogenerated: PLEASE DO NOT EDIT IT.
+#
+# You can use "make menuconfig" to make any modifications to the installed .config file.
+# You can then do "make savedefconfig" to generate a new defconfig file that includes your
+# modifications.
+#
+# CONFIG_NSH_ARGCAT is not set
+# CONFIG_NSH_CMDOPT_HEXDUMP is not set
+CONFIG_ARCH="risc-v"
+CONFIG_ARCH_BOARD="esp32c6-devkitc"
+CONFIG_ARCH_BOARD_COMMON=y
+CONFIG_ARCH_BOARD_ESP32C6_DEVKITC=y
+CONFIG_ARCH_CHIP="esp32c6"
+CONFIG_ARCH_CHIP_ESP32C6=y
+CONFIG_ARCH_CHIP_ESP32C6WROOM1=y
+CONFIG_ARCH_INTERRUPTSTACK=2048
+CONFIG_ARCH_RISCV=y
+CONFIG_ARCH_STACKDUMP=y
+CONFIG_BOARDCTL_RESET=y
+CONFIG_BOARD_LOOPSPERMSEC=15000
+CONFIG_BUILTIN=y
+CONFIG_DEV_ZERO=y
+CONFIG_EFUSE=y
+CONFIG_ESPRESSIF_EFUSE=y
+CONFIG_ESPRESSIF_ESP32C6=y
+CONFIG_FS_PROCFS=y
+CONFIG_IDLETHREAD_STACKSIZE=2048
+CONFIG_INIT_ENTRYPOINT="nsh_main"
+CONFIG_INTELHEX_BINARY=y
+CONFIG_LIBC_PERROR_STDOUT=y
+CONFIG_LIBC_STRERROR=y
+CONFIG_NFILE_DESCRIPTORS_PER_BLOCK=6
+CONFIG_NSH_ARCHINIT=y
+CONFIG_NSH_BUILTIN_APPS=y
+CONFIG_NSH_FILEIOSIZE=512
+CONFIG_NSH_READLINE=y
+CONFIG_NSH_STRERROR=y
+CONFIG_PREALLOC_TIMERS=0
+CONFIG_RR_INTERVAL=200
+CONFIG_SCHED_BACKTRACE=y
+CONFIG_SCHED_WAITPID=y
+CONFIG_START_DAY=29
+CONFIG_START_MONTH=11
+CONFIG_START_YEAR=2019
+CONFIG_SYSTEM_DUMPSTACK=y
+CONFIG_SYSTEM_NSH=y
+CONFIG_TESTING_GETPRIME=y
+CONFIG_TESTING_OSTEST=y
+CONFIG_UART0_SERIAL_CONSOLE=y

boards/risc-v/esp32c6/esp32c6-devkitc/src/esp32c6_bringup.c

@@ -65,6 +65,10 @@
 #  include <nuttx/input/buttons.h>
 #endif
 
+#ifdef CONFIG_ESPRESSIF_EFUSE
+#  include "espressif/esp_efuse.h"
+#endif
+
 #ifdef CONFIG_ESP_RMT
 #  include "esp_board_rmt.h"
 #endif
@@ -161,6 +165,14 @@ int esp_bringup(void)
     }
 #endif
 
+#if defined(CONFIG_ESPRESSIF_EFUSE)
+  ret = esp_efuse_initialize("/dev/efuse");
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "ERROR: Failed to init EFUSE: %d\n", ret);
+    }
+#endif
+
 #ifdef CONFIG_ESPRESSIF_MWDT0
   ret = esp_wdt_initialize("/dev/watchdog0", ESP_WDT_MWDT0);
   if (ret < 0)

boards/risc-v/esp32c6/esp32c6-devkitm/configs/efuse/defconfig

@@ -0,0 +1,50 @@
+#
+# This file is autogenerated: PLEASE DO NOT EDIT IT.
+#
+# You can use "make menuconfig" to make any modifications to the installed .config file.
+# You can then do "make savedefconfig" to generate a new defconfig file that includes your
+# modifications.
+#
+# CONFIG_NSH_ARGCAT is not set
+# CONFIG_NSH_CMDOPT_HEXDUMP is not set
+CONFIG_ARCH="risc-v"
+CONFIG_ARCH_BOARD="esp32c6-devkitm"
+CONFIG_ARCH_BOARD_COMMON=y
+CONFIG_ARCH_BOARD_ESP32C6_DEVKITM=y
+CONFIG_ARCH_CHIP="esp32c6"
+CONFIG_ARCH_CHIP_ESP32C6=y
+CONFIG_ARCH_CHIP_ESP32C6MINI1=y
+CONFIG_ARCH_INTERRUPTSTACK=2048
+CONFIG_ARCH_RISCV=y
+CONFIG_ARCH_STACKDUMP=y
+CONFIG_BOARDCTL_RESET=y
+CONFIG_BOARD_LOOPSPERMSEC=15000
+CONFIG_BUILTIN=y
+CONFIG_DEV_ZERO=y
+CONFIG_EFUSE=y
+CONFIG_ESPRESSIF_EFUSE=y
+CONFIG_ESPRESSIF_ESP32C6=y
+CONFIG_FS_PROCFS=y
+CONFIG_IDLETHREAD_STACKSIZE=2048
+CONFIG_INIT_ENTRYPOINT="nsh_main"
+CONFIG_INTELHEX_BINARY=y
+CONFIG_LIBC_PERROR_STDOUT=y
+CONFIG_LIBC_STRERROR=y
+CONFIG_NFILE_DESCRIPTORS_PER_BLOCK=6
+CONFIG_NSH_ARCHINIT=y
+CONFIG_NSH_BUILTIN_APPS=y
+CONFIG_NSH_FILEIOSIZE=512
+CONFIG_NSH_READLINE=y
+CONFIG_NSH_STRERROR=y
+CONFIG_PREALLOC_TIMERS=0
+CONFIG_RR_INTERVAL=200
+CONFIG_SCHED_BACKTRACE=y
+CONFIG_SCHED_WAITPID=y
+CONFIG_START_DAY=29
+CONFIG_START_MONTH=11
+CONFIG_START_YEAR=2019
+CONFIG_SYSTEM_DUMPSTACK=y
+CONFIG_SYSTEM_NSH=y
+CONFIG_TESTING_GETPRIME=y
+CONFIG_TESTING_OSTEST=y
+CONFIG_UART0_SERIAL_CONSOLE=y

boards/risc-v/esp32c6/esp32c6-devkitm/src/esp32c6_bringup.c

@@ -65,6 +65,10 @@
 #  include <nuttx/input/buttons.h>
 #endif
 
+#ifdef CONFIG_ESPRESSIF_EFUSE
+#  include "espressif/esp_efuse.h"
+#endif
+
 #ifdef CONFIG_ESP_RMT
 #  include "esp_board_rmt.h"
 #endif
@@ -157,6 +161,14 @@ int esp_bringup(void)
     }
 #endif
 
+#if defined(CONFIG_ESPRESSIF_EFUSE)
+  ret = esp_efuse_initialize("/dev/efuse");
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "ERROR: Failed to init EFUSE: %d\n", ret);
+    }
+#endif
+
 #ifdef CONFIG_ESPRESSIF_MWDT0
   ret = esp_wdt_initialize("/dev/watchdog0", ESP_WDT_MWDT0);
   if (ret < 0)

boards/risc-v/esp32h2/esp32h2-devkit/configs/efuse/defconfig

@@ -0,0 +1,49 @@
+#
+# This file is autogenerated: PLEASE DO NOT EDIT IT.
+#
+# You can use "make menuconfig" to make any modifications to the installed .config file.
+# You can then do "make savedefconfig" to generate a new defconfig file that includes your
+# modifications.
+#
+# CONFIG_NSH_ARGCAT is not set
+# CONFIG_NSH_CMDOPT_HEXDUMP is not set
+CONFIG_ARCH="risc-v"
+CONFIG_ARCH_BOARD="esp32h2-devkit"
+CONFIG_ARCH_BOARD_COMMON=y
+CONFIG_ARCH_BOARD_ESP32H2_DEVKIT=y
+CONFIG_ARCH_CHIP="esp32h2"
+CONFIG_ARCH_CHIP_ESP32H2=y
+CONFIG_ARCH_INTERRUPTSTACK=2048
+CONFIG_ARCH_RISCV=y
+CONFIG_ARCH_STACKDUMP=y
+CONFIG_BOARDCTL_RESET=y
+CONFIG_BOARD_LOOPSPERMSEC=15000
+CONFIG_BUILTIN=y
+CONFIG_DEV_ZERO=y
+CONFIG_EFUSE=y
+CONFIG_ESPRESSIF_EFUSE=y
+CONFIG_ESPRESSIF_ESP32H2=y
+CONFIG_FS_PROCFS=y
+CONFIG_IDLETHREAD_STACKSIZE=2048
+CONFIG_INIT_ENTRYPOINT="nsh_main"
+CONFIG_INTELHEX_BINARY=y
+CONFIG_LIBC_PERROR_STDOUT=y
+CONFIG_LIBC_STRERROR=y
+CONFIG_NFILE_DESCRIPTORS_PER_BLOCK=6
+CONFIG_NSH_ARCHINIT=y
+CONFIG_NSH_BUILTIN_APPS=y
+CONFIG_NSH_FILEIOSIZE=512
+CONFIG_NSH_READLINE=y
+CONFIG_NSH_STRERROR=y
+CONFIG_PREALLOC_TIMERS=0
+CONFIG_RR_INTERVAL=200
+CONFIG_SCHED_BACKTRACE=y
+CONFIG_SCHED_WAITPID=y
+CONFIG_START_DAY=29
+CONFIG_START_MONTH=11
+CONFIG_START_YEAR=2019
+CONFIG_SYSTEM_DUMPSTACK=y
+CONFIG_SYSTEM_NSH=y
+CONFIG_TESTING_GETPRIME=y
+CONFIG_TESTING_OSTEST=y
+CONFIG_UART0_SERIAL_CONSOLE=y

boards/risc-v/esp32h2/esp32h2-devkit/src/esp32h2_bringup.c

@@ -65,6 +65,10 @@
 #  include <nuttx/input/buttons.h>
 #endif
 
+#ifdef CONFIG_ESPRESSIF_EFUSE
+#  include "espressif/esp_efuse.h"
+#endif
+
 #ifdef CONFIG_ESP_RMT
 #  include "esp_board_rmt.h"
 #endif
@@ -149,6 +153,14 @@ int esp_bringup(void)
     }
 #endif
 
+#if defined(CONFIG_ESPRESSIF_EFUSE)
+  ret = esp_efuse_initialize("/dev/efuse");
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "ERROR: Failed to init EFUSE: %d\n", ret);
+    }
+#endif
+
 #ifdef CONFIG_ESPRESSIF_MWDT0
   ret = esp_wdt_initialize("/dev/watchdog0", ESP_WDT_MWDT0);
   if (ret < 0)