Add USB MSC support for esp32s3

Documentation/platforms/xtensa/esp32s3/boards/esp32s3-devkit/index.rst

@@ -827,3 +827,23 @@ Then check the partition::
    crw-rw-rw-           0 ttyS0
    frw-rw-rw-        4096 txtable
    crw-rw-rw-           0 zero
+
+usbmsc
+------
+
+Basic USBMSC(USB Mass Storage Class) configuration based on esp32s3-devkit:usb_device
+
+You can run the configuration and compilation procedure::
+
+  $ ./tools/configure.sh -l esp32s3-devkit:usbmsc
+  $ make flash ESPTOOL_PORT=/dev/ttyACMx -j16
+
+To test it, just run the following::
+
+  # Device
+  nsh> mkrd -m 10 -s 512 640
+  nsh> msconn
+
+  # Host
+  $ sudo mkfs.ext4 /dev/sdx
+  $ sudo mount /dev/sdx ./mnt/

boards/xtensa/esp32s3/common/src/Make.defs

@@ -86,6 +86,10 @@ ifeq ($(CONFIG_ESP32S3_SDMMC),y)
   CSRCS += esp32s3_board_sdmmc.c
 endif
 
+ifeq ($(CONFIG_USBMSC),y)
+  CSRCS += esp32s3_usbmsc.c
+endif
+
 DEPPATH += --dep-path src
 VPATH += :src
 CFLAGS += ${INCDIR_PREFIX}$(TOPDIR)$(DELIM)arch$(DELIM)$(CONFIG_ARCH)$(DELIM)src$(DELIM)board$(DELIM)src

boards/xtensa/esp32s3/common/src/esp32s3_usbmsc.c

@@ -0,0 +1,62 @@
+/****************************************************************************
+ * boards/xtensa/esp32s3/common/src/esp32s3_usbmsc.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 <stdio.h>
+#include <syslog.h>
+#include <errno.h>
+
+#include <nuttx/board.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/* Configuration ************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: board_usbmsc_initialize
+ *
+ * Description:
+ *   Perform architecture specific initialization as needed to establish
+ *   the mass storage device that will be exported by the USB MSC device.
+ *
+ ****************************************************************************/
+
+int board_usbmsc_initialize(int port)
+{
+  /* If system/usbmsc is built as an NSH command, then SD slot should
+   * already have been initialized in board_app_initialize()
+   * In this case, there is nothing further to be done here.
+   */
+
+  return OK;
+}

boards/xtensa/esp32s3/esp32s3-devkit/configs/usbmsc/defconfig

@@ -0,0 +1,9 @@
+#include "../usb_device/defconfig"
+CONFIG_BCH=y
+CONFIG_DEV_ZERO=y
+CONFIG_ESP32S3_SPIFLASH=y
+CONFIG_SYSTEM_USBMSC=y
+CONFIG_SYSTEM_USBMSC_DEVPATH1="/dev/ram10"
+CONFIG_USBMSC=y
+CONFIG_USBMSC_EPBULKIN=2
+CONFIG_USBMSC_EPBULKOUT=1