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commit 3511ec823ce8115da53ecd44630424ab0f5ac7e1
Author: Gustavo Henrique Nihei <[email protected]>
AuthorDate: Tue Feb 22 10:33:04 2022 -0300

    esp32s3-devkit: Initialize Watchdog Timers on bringup
    
    Signed-off-by: Gustavo Henrique Nihei <[email protected]>
---
 .../esp32s3/common/include/esp32s3_board_wdt.h     | 73 +++++++++++++++++++
 boards/xtensa/esp32s3/common/src/Make.defs         |  4 ++
 .../src/esp32s3_board_wdt.c}                       | 82 +++++++++-------------
 .../esp32s3-devkit/configs/watchdog/defconfig      | 51 ++++++++++++++
 .../esp32s3/esp32s3-devkit/src/esp32s3_bringup.c   | 14 ++++
 5 files changed, 174 insertions(+), 50 deletions(-)

diff --git a/boards/xtensa/esp32s3/common/include/esp32s3_board_wdt.h 
b/boards/xtensa/esp32s3/common/include/esp32s3_board_wdt.h
new file mode 100644
index 0000000..f697729
--- /dev/null
+++ b/boards/xtensa/esp32s3/common/include/esp32s3_board_wdt.h
@@ -0,0 +1,73 @@
+/****************************************************************************
+ * boards/xtensa/esp32s3/common/include/esp32s3_board_wdt.h
+ *
+ * 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 __BOARDS_XTENSA_ESP32S3_COMMON_INCLUDE_ESP32S3_BOARD_WDT_H
+#define __BOARDS_XTENSA_ESP32S3_COMMON_INCLUDE_ESP32S3_BOARD_WDT_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#ifndef __ASSEMBLY__
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C"
+{
+#else
+#define EXTERN extern
+#endif
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+#ifdef CONFIG_WATCHDOG
+
+/****************************************************************************
+ * Name: board_wdt_init
+ *
+ * Description:
+ *   Configure the watchdog timer driver.
+ *
+ * Returned Value:
+ *   Zero (OK) is returned on success; A negated errno value is returned
+ *   to indicate the nature of any failure.
+ *
+ ****************************************************************************/
+
+int board_wdt_init(void);
+
+#endif /* CONFIG_WATCHDOG */
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* __BOARDS_XTENSA_ESP32S3_COMMON_INCLUDE_ESP32S3_BOARD_WDT_H */
diff --git a/boards/xtensa/esp32s3/common/src/Make.defs 
b/boards/xtensa/esp32s3/common/src/Make.defs
index e504c22..7069365 100644
--- a/boards/xtensa/esp32s3/common/src/Make.defs
+++ b/boards/xtensa/esp32s3/common/src/Make.defs
@@ -22,6 +22,10 @@ ifeq ($(CONFIG_ESP32S3_TIMER),y)
   CSRCS += esp32s3_board_tim.c
 endif
 
+ifeq ($(CONFIG_WATCHDOG),y)
+  CSRCS += esp32s3_board_wdt.c
+endif
+
 DEPPATH += --dep-path src
 VPATH += :src
 CFLAGS += $(shell $(INCDIR) "$(CC)" 
$(TOPDIR)$(DELIM)arch$(DELIM)$(CONFIG_ARCH)$(DELIM)src$(DELIM)board$(DELIM)src)
diff --git a/boards/xtensa/esp32s3/esp32s3-devkit/src/esp32s3_bringup.c 
b/boards/xtensa/esp32s3/common/src/esp32s3_board_wdt.c
similarity index 54%
copy from boards/xtensa/esp32s3/esp32s3-devkit/src/esp32s3_bringup.c
copy to boards/xtensa/esp32s3/common/src/esp32s3_board_wdt.c
index a01e583..c3f6942 100644
--- a/boards/xtensa/esp32s3/esp32s3-devkit/src/esp32s3_bringup.c
+++ b/boards/xtensa/esp32s3/common/src/esp32s3_board_wdt.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * boards/xtensa/esp32s3/esp32s3-devkit/src/esp32s3_bringup.c
+ * boards/xtensa/esp32s3/common/src/esp32s3_board_wdt.c
  *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
@@ -24,84 +24,66 @@
 
 #include <nuttx/config.h>
 
-#include <stdio.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <syslog.h>
-#include <sys/stat.h>
-#include <sys/ioctl.h>
 #include <sys/types.h>
-#include <syslog.h>
 #include <debug.h>
-#include <stdio.h>
 
-#include <errno.h>
-#include <nuttx/fs/fs.h>
-
-#ifdef CONFIG_ESP32S3_TIMER
-#  include "esp32s3_board_tim.h"
-#endif
+#include "esp32s3_board_wdt.h"
+#include "esp32s3_wdt_lowerhalf.h"
+#include "esp32s3_wdt.h"
 
 #include "esp32s3-devkit.h"
 
 /****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
  * Public Functions
  ****************************************************************************/
 
 /****************************************************************************
- * Name: esp32s3_bringup
+ * Name: board_wdt_init
  *
  * Description:
- *   Perform architecture-specific initialization
- *
- *   CONFIG_BOARD_LATE_INITIALIZE=y :
- *     Called from board_late_initialize().
+ *   Configure the watchdog timer driver.
  *
- *   CONFIG_BOARD_LATE_INITIALIZE=n && CONFIG_BOARDCTL=y :
- *     Called from the NSH library
+ * Returned Value:
+ *   Zero (OK) is returned on success; A negated errno value is returned
+ *   to indicate the nature of any failure.
  *
  ****************************************************************************/
 
-int esp32s3_bringup(void)
+int board_wdt_init(void)
 {
-  int ret;
+  int ret = OK;
 
-#ifdef CONFIG_FS_PROCFS
-  /* Mount the procfs file system */
-
-  ret = nx_mount(NULL, "/proc", "procfs", 0, NULL);
+#ifdef CONFIG_ESP32S3_MWDT0
+  ret = esp32s3_wdt_initialize("/dev/watchdog0", ESP32S3_WDT_MWDT0);
   if (ret < 0)
     {
-      syslog(LOG_ERR, "ERROR: Failed to mount procfs at /proc: %d\n", ret);
+      syslog(LOG_ERR, "Failed to initialize MWDT0: %d\n", ret);
+      return ret;
     }
-#endif
-
-#ifdef CONFIG_FS_TMPFS
-  /* Mount the tmpfs file system */
+#endif /* CONFIG_ESP32S3_MWDT0 */
 
-  ret = nx_mount(NULL, CONFIG_LIBC_TMPDIR, "tmpfs", 0, NULL);
+#ifdef CONFIG_ESP32S3_MWDT1
+  ret = esp32s3_wdt_initialize("/dev/watchdog1", ESP32S3_WDT_MWDT1);
   if (ret < 0)
     {
-      syslog(LOG_ERR, "ERROR: Failed to mount tmpfs at %s: %d\n",
-             CONFIG_LIBC_TMPDIR, ret);
+      syslog(LOG_ERR, "Failed to initialize MWDT1: %d\n", ret);
+      return ret;
     }
-#endif
-
-#ifdef CONFIG_ESP32S3_TIMER
-  /* Configure general purpose timers */
+#endif /* CONFIG_ESP32S3_MWDT1 */
 
-  ret = board_tim_init();
+#ifdef CONFIG_ESP32S3_RWDT
+  ret = esp32s3_wdt_initialize("/dev/watchdog2", ESP32S3_WDT_RWDT);
   if (ret < 0)
     {
-      syslog(LOG_ERR, "Failed to initialize timers: %d\n", ret);
+      syslog(LOG_ERR, "Failed to initialize RWDT: %d\n", ret);
+      return ret;
     }
-#endif
+#endif /* CONFIG_ESP32S3_RWDT */
 
-  /* If we got here then perhaps not all initialization was successful, but
-   * at least enough succeeded to bring-up NSH with perhaps reduced
-   * capabilities.
-   */
-
-  UNUSED(ret);
-  return OK;
+  return ret;
 }
+
diff --git a/boards/xtensa/esp32s3/esp32s3-devkit/configs/watchdog/defconfig 
b/boards/xtensa/esp32s3/esp32s3-devkit/configs/watchdog/defconfig
new file mode 100644
index 0000000..19d61e1
--- /dev/null
+++ b/boards/xtensa/esp32s3/esp32s3-devkit/configs/watchdog/defconfig
@@ -0,0 +1,51 @@
+#
+# 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_ARCH_LEDS is not set
+# CONFIG_NSH_ARGCAT is not set
+# CONFIG_NSH_CMDOPT_HEXDUMP is not set
+# CONFIG_NSH_CMDPARMS is not set
+CONFIG_ARCH="xtensa"
+CONFIG_ARCH_BOARD="esp32s3-devkit"
+CONFIG_ARCH_BOARD_ESP32S3_DEVKIT=y
+CONFIG_ARCH_CHIP="esp32s3"
+CONFIG_ARCH_CHIP_ESP32S3=y
+CONFIG_ARCH_CHIP_ESP32S3WROOM1=y
+CONFIG_ARCH_STACKDUMP=y
+CONFIG_ARCH_XTENSA=y
+CONFIG_BOARD_LOOPSPERMSEC=16717
+CONFIG_BUILTIN=y
+CONFIG_DEBUG_FULLOPT=y
+CONFIG_DEBUG_SYMBOLS=y
+CONFIG_ESP32S3_MWDT0=y
+CONFIG_ESP32S3_MWDT1=y
+CONFIG_ESP32S3_UART0=y
+CONFIG_EXAMPLES_WATCHDOG=y
+CONFIG_FS_PROCFS=y
+CONFIG_HAVE_CXX=y
+CONFIG_HAVE_CXXINITIALIZE=y
+CONFIG_IDLETHREAD_STACKSIZE=3072
+CONFIG_INIT_ENTRYPOINT="nsh_main"
+CONFIG_INTELHEX_BINARY=y
+CONFIG_MM_REGIONS=3
+CONFIG_NSH_ARCHINIT=y
+CONFIG_NSH_BUILTIN_APPS=y
+CONFIG_NSH_FILEIOSIZE=512
+CONFIG_NSH_LINELEN=64
+CONFIG_NSH_READLINE=y
+CONFIG_PREALLOC_TIMERS=4
+CONFIG_RAM_SIZE=114688
+CONFIG_RAM_START=0x20000000
+CONFIG_RAW_BINARY=y
+CONFIG_RR_INTERVAL=200
+CONFIG_SCHED_WAITPID=y
+CONFIG_START_DAY=6
+CONFIG_START_MONTH=12
+CONFIG_START_YEAR=2011
+CONFIG_SYSTEM_NSH=y
+CONFIG_UART0_SERIAL_CONSOLE=y
+CONFIG_WATCHDOG=y
diff --git a/boards/xtensa/esp32s3/esp32s3-devkit/src/esp32s3_bringup.c 
b/boards/xtensa/esp32s3/esp32s3-devkit/src/esp32s3_bringup.c
index a01e583..a5d54cd 100644
--- a/boards/xtensa/esp32s3/esp32s3-devkit/src/esp32s3_bringup.c
+++ b/boards/xtensa/esp32s3/esp32s3-devkit/src/esp32s3_bringup.c
@@ -42,6 +42,10 @@
 #  include "esp32s3_board_tim.h"
 #endif
 
+#ifdef CONFIG_WATCHDOG
+#  include "esp32s3_board_wdt.h"
+#endif
+
 #include "esp32s3-devkit.h"
 
 /****************************************************************************
@@ -97,6 +101,16 @@ int esp32s3_bringup(void)
     }
 #endif
 
+#ifdef CONFIG_WATCHDOG
+  /* Configure watchdog timer */
+
+  ret = board_wdt_init();
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "Failed to initialize watchdog timer: %d\n", ret);
+    }
+#endif
+
   /* If we got here then perhaps not all initialization was successful, but
    * at least enough succeeded to bring-up NSH with perhaps reduced
    * capabilities.

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