boards/risc-v: add support for SD Card over SPI on ESP32-C3|C6|H2

Add board support for SD Card over SPI for ESP32C3, ESP32C6 and ESP32H2.

Signed-off-by: Filipe Cavalcanti <filipe.cavalcanti@espressif.com>

boards/risc-v/esp32c3/common/include/esp_board_mmcsd.h

@@ -0,0 +1,76 @@
+/****************************************************************************
+ * boards/risc-v/esp32c3/common/include/esp_board_mmcsd.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 __BOARDS_RISCV_ESP32C3_COMMON_INCLUDE_ESP_BOARD_MMCSD_H
+#define __BOARDS_RISCV_ESP32C3_COMMON_INCLUDE_ESP_BOARD_MMCSD_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C"
+{
+#else
+#define EXTERN extern
+#endif
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: esp_mmcsd_spi_initialize
+ *
+ * Description:
+ *   Initialize SPI-based SD card.
+ *
+ * Input Parameters:
+ *   None.
+ *
+ * Returned Value:
+ *   Zero (OK) is returned on success; A negated errno value is returned
+ *   to indicate the nature of any failure.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_MMCSD_SPI
+int esp_mmcsd_spi_initialize(void);
+#endif
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* __BOARDS_RISCV_ESP32C3_COMMON_INCLUDE_ESP_BOARD_MMCSD_H */

boards/risc-v/esp32c3/common/src/Make.defs

@@ -70,6 +70,10 @@ ifeq ($(CONFIG_SENSORS_BMP180),y)
   CSRCS += esp_board_bmp180.c
 endif
 
+ifeq ($(CONFIG_MMCSD_SPI),y)
+  CSRCS += esp_board_mmcsd.c
+endif
+
 DEPPATH += --dep-path src
 VPATH += :src
 CFLAGS += ${INCDIR_PREFIX}$(TOPDIR)$(DELIM)arch$(DELIM)$(CONFIG_ARCH)$(DELIM)src$(DELIM)board$(DELIM)src

boards/risc-v/esp32c3/common/src/esp_board_mmcsd.c

@@ -0,0 +1,97 @@
+/****************************************************************************
+ * boards/risc-v/esp32c3/common/src/esp_board_mmcsd.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 <debug.h>
+#include <nuttx/config.h>
+#include <nuttx/mmcsd.h>
+#include <nuttx/spi/spi.h>
+
+#include "espressif/esp_spi.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: esp_mmcsd_spi_initialize
+ *
+ * Description:
+ *   Initialize SPI-based SD card.
+ *
+ * Input Parameters:
+ *   minor - The MMC/SD minor device number. The MMC/SD device will be
+ *     registered as /dev/mmcsdN where N is the minor number
+ *
+ * Returned Value:
+ *   Zero (OK) is returned on success; A negated errno value is returned
+ *   to indicate the nature of any failure.
+ *
+ ****************************************************************************/
+
+int esp_mmcsd_spi_initialize(void)
+{
+  struct spi_dev_s *spi;
+  int ret;
+
+  syslog(LOG_INFO, "INFO: init MMC/SD slot %d on SPI%d: /dev/mmcsd%d\n",
+         CONFIG_NSH_MMCSDSLOTNO, CONFIG_NSH_MMCSDSPIPORTNO,
+         CONFIG_NSH_MMCSDMINOR);
+
+  spi = esp_spibus_initialize(CONFIG_NSH_MMCSDSPIPORTNO);
+
+  if (spi == NULL)
+    {
+      syslog(LOG_ERR, "ERROR: failed to initialize SPI%d.\n",
+             CONFIG_NSH_MMCSDSPIPORTNO);
+      return -ENODEV;
+    }
+
+  /* Mounts to /dev/mmcsdN where N in the minor number */
+
+  ret = mmcsd_spislotinitialize(CONFIG_NSH_MMCSDMINOR,
+                                CONFIG_NSH_MMCSDSLOTNO, spi);
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "ERROR: failed to bind SPI%d to SD slot %d\n",
+            CONFIG_NSH_MMCSDSPIPORTNO, CONFIG_NSH_MMCSDSLOTNO);
+      return ret;
+    }
+
+  syslog(LOG_INFO, "INFO: MMCSD initialized\n");
+  return OK;
+}

boards/risc-v/esp32c3/common/src/esp_board_spi.c

@@ -52,6 +52,11 @@ uint8_t esp_spi2_status(struct spi_dev_s *dev, uint32_t devid)
 {
   uint8_t status = 0;
 
+  if (devid == SPIDEV_MMCSD(0))
+    {
+      return SPI_STATUS_PRESENT;
+    }
+
   return status;
 }
 

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

@@ -122,6 +122,10 @@
 #  include "espressif/esp_sha.h"
 #endif
 
+#ifdef CONFIG_MMCSD_SPI
+#  include "esp_board_mmcsd.h"
+#endif
+
 #include "esp32c3-generic.h"
 
 /****************************************************************************
@@ -261,6 +265,14 @@ int esp_bringup(void)
 #  endif /* CONFIG_ESPRESSIF_SPI_BITBANG */
 #endif /* CONFIG_ESPRESSIF_SPI */
 
+#if defined(CONFIG_ESPRESSIF_SPI) && defined(CONFIG_MMCSD_SPI)
+  ret = esp_mmcsd_spi_initialize();
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "ERROR: failed to init MMCSD SPI\n");
+    }
+#endif
+
 #ifdef CONFIG_ESPRESSIF_SPIFLASH
   ret = board_spiflash_init();
   if (ret)

boards/risc-v/esp32c6/common/include/esp_board_mmcsd.h

@@ -0,0 +1,76 @@
+/****************************************************************************
+ * boards/risc-v/esp32c6/common/include/esp_board_mmcsd.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 __BOARDS_RISCV_ESP32C6_COMMON_INCLUDE_ESP_BOARD_MMCSD_H
+#define __BOARDS_RISCV_ESP32C6_COMMON_INCLUDE_ESP_BOARD_MMCSD_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C"
+{
+#else
+#define EXTERN extern
+#endif
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: esp_mmcsd_spi_initialize
+ *
+ * Description:
+ *   Initialize SPI-based SD card.
+ *
+ * Input Parameters:
+ *   None.
+ *
+ * Returned Value:
+ *   Zero (OK) is returned on success; A negated errno value is returned
+ *   to indicate the nature of any failure.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_MMCSD_SPI
+int esp_mmcsd_spi_initialize(void);
+#endif
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* __BOARDS_RISCV_ESP32C6_COMMON_INCLUDE_ESP_BOARD_MMCSD_H */

boards/risc-v/esp32c6/common/src/Make.defs

@@ -90,6 +90,10 @@ ifeq ($(CONFIG_NCV7410),y)
   CSRCS += esp_board_ncv7410.c
 endif
 
+ifeq ($(CONFIG_MMCSD_SPI),y)
+  CSRCS += esp_board_mmcsd.c
+endif
+
 DEPPATH += --dep-path src
 VPATH += :src
 CFLAGS += ${INCDIR_PREFIX}$(TOPDIR)$(DELIM)arch$(DELIM)$(CONFIG_ARCH)$(DELIM)src$(DELIM)board$(DELIM)src

boards/risc-v/esp32c6/common/src/esp_board_mmcsd.c

@@ -0,0 +1,97 @@
+/****************************************************************************
+ * boards/risc-v/esp32c6/common/src/esp_board_mmcsd.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 <debug.h>
+#include <nuttx/config.h>
+#include <nuttx/mmcsd.h>
+#include <nuttx/spi/spi.h>
+
+#include "espressif/esp_spi.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: esp_mmcsd_spi_initialize
+ *
+ * Description:
+ *   Initialize SPI-based SD card.
+ *
+ * Input Parameters:
+ *   minor - The MMC/SD minor device number. The MMC/SD device will be
+ *     registered as /dev/mmcsdN where N is the minor number
+ *
+ * Returned Value:
+ *   Zero (OK) is returned on success; A negated errno value is returned
+ *   to indicate the nature of any failure.
+ *
+ ****************************************************************************/
+
+int esp_mmcsd_spi_initialize(void)
+{
+  struct spi_dev_s *spi;
+  int ret;
+
+  syslog(LOG_INFO, "INFO: init MMC/SD slot %d on SPI%d: /dev/mmcsd%d\n",
+         CONFIG_NSH_MMCSDSLOTNO, CONFIG_NSH_MMCSDSPIPORTNO,
+         CONFIG_NSH_MMCSDMINOR);
+
+  spi = esp_spibus_initialize(CONFIG_NSH_MMCSDSPIPORTNO);
+
+  if (spi == NULL)
+    {
+      syslog(LOG_ERR, "ERROR: failed to initialize SPI%d.\n",
+             CONFIG_NSH_MMCSDSPIPORTNO);
+      return -ENODEV;
+    }
+
+  /* Mounts to /dev/mmcsdN where N in the minor number */
+
+  ret = mmcsd_spislotinitialize(CONFIG_NSH_MMCSDMINOR,
+                                CONFIG_NSH_MMCSDSLOTNO, spi);
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "ERROR: failed to bind SPI%d to SD slot %d\n",
+            CONFIG_NSH_MMCSDSPIPORTNO, CONFIG_NSH_MMCSDSLOTNO);
+      return ret;
+    }
+
+  syslog(LOG_INFO, "INFO: MMCSD initialized\n");
+  return OK;
+}

boards/risc-v/esp32c6/common/src/esp_board_spi.c

@@ -52,6 +52,11 @@ uint8_t esp_spi2_status(struct spi_dev_s *dev, uint32_t devid)
 {
   uint8_t status = 0;
 
+  if (devid == SPIDEV_MMCSD(0))
+    {
+      return SPI_STATUS_PRESENT;
+    }
+
   return status;
 }
 

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

@@ -133,6 +133,10 @@
 #  include "esp_board_ncv7410.h"
 #endif
 
+#ifdef CONFIG_MMCSD_SPI
+#  include "esp_board_mmcsd.h"
+#endif
+
 #include "esp32c6-devkitc.h"
 
 /****************************************************************************
@@ -296,6 +300,14 @@ int esp_bringup(void)
 #  endif /* CONFIG_ESPRESSIF_SPI_BITBANG */
 #endif /* CONFIG_ESPRESSIF_SPI */
 
+#if defined(CONFIG_ESPRESSIF_SPI) && defined(CONFIG_MMCSD_SPI)
+  ret = esp_mmcsd_spi_initialize();
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "ERROR: failed to init MMCSD SPI\n");
+    }
+#endif
+
 #ifdef CONFIG_ESPRESSIF_SPIFLASH
   ret = board_spiflash_init();
   if (ret)

boards/risc-v/esp32h2/common/include/esp_board_mmcsd.h

@@ -0,0 +1,76 @@
+/****************************************************************************
+ * boards/risc-v/esp32h2/common/include/esp_board_mmcsd.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 __BOARDS_RISCV_ESP32H2_COMMON_INCLUDE_ESP_BOARD_MMCSD_H
+#define __BOARDS_RISCV_ESP32H2_COMMON_INCLUDE_ESP_BOARD_MMCSD_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C"
+{
+#else
+#define EXTERN extern
+#endif
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: esp_mmcsd_spi_initialize
+ *
+ * Description:
+ *   Initialize SPI-based SD card.
+ *
+ * Input Parameters:
+ *   None.
+ *
+ * Returned Value:
+ *   Zero (OK) is returned on success; A negated errno value is returned
+ *   to indicate the nature of any failure.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_MMCSD_SPI
+int esp_mmcsd_spi_initialize(void);
+#endif
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* __BOARDS_RISCV_ESP32H2_COMMON_INCLUDE_ESP_BOARD_MMCSD_H */

boards/risc-v/esp32h2/common/src/Make.defs

@@ -74,6 +74,10 @@ ifeq ($(CONFIG_ESP_PCNT),y)
   CSRCS += esp_board_pcnt.c
 endif
 
+ifeq ($(CONFIG_MMCSD_SPI),y)
+  CSRCS += esp_board_mmcsd.c
+endif
+
 DEPPATH += --dep-path src
 VPATH += :src
 CFLAGS += ${INCDIR_PREFIX}$(TOPDIR)$(DELIM)arch$(DELIM)$(CONFIG_ARCH)$(DELIM)src$(DELIM)board$(DELIM)src

boards/risc-v/esp32h2/common/src/esp_board_mmcsd.c

@@ -0,0 +1,97 @@
+/****************************************************************************
+ * boards/risc-v/esp32h2/common/src/esp_board_mmcsd.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 <debug.h>
+#include <nuttx/config.h>
+#include <nuttx/mmcsd.h>
+#include <nuttx/spi/spi.h>
+
+#include "espressif/esp_spi.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: esp_mmcsd_spi_initialize
+ *
+ * Description:
+ *   Initialize SPI-based SD card.
+ *
+ * Input Parameters:
+ *   minor - The MMC/SD minor device number. The MMC/SD device will be
+ *     registered as /dev/mmcsdN where N is the minor number
+ *
+ * Returned Value:
+ *   Zero (OK) is returned on success; A negated errno value is returned
+ *   to indicate the nature of any failure.
+ *
+ ****************************************************************************/
+
+int esp_mmcsd_spi_initialize(void)
+{
+  struct spi_dev_s *spi;
+  int ret;
+
+  syslog(LOG_INFO, "INFO: init MMC/SD slot %d on SPI%d: /dev/mmcsd%d\n",
+         CONFIG_NSH_MMCSDSLOTNO, CONFIG_NSH_MMCSDSPIPORTNO,
+         CONFIG_NSH_MMCSDMINOR);
+
+  spi = esp_spibus_initialize(CONFIG_NSH_MMCSDSPIPORTNO);
+
+  if (spi == NULL)
+    {
+      syslog(LOG_ERR, "ERROR: failed to initialize SPI%d.\n",
+             CONFIG_NSH_MMCSDSPIPORTNO);
+      return -ENODEV;
+    }
+
+  /* Mounts to /dev/mmcsdN where N in the minor number */
+
+  ret = mmcsd_spislotinitialize(CONFIG_NSH_MMCSDMINOR,
+                                CONFIG_NSH_MMCSDSLOTNO, spi);
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "ERROR: failed to bind SPI%d to SD slot %d\n",
+            CONFIG_NSH_MMCSDSPIPORTNO, CONFIG_NSH_MMCSDSLOTNO);
+      return ret;
+    }
+
+  syslog(LOG_INFO, "INFO: MMCSD initialized\n");
+  return OK;
+}

boards/risc-v/esp32h2/common/src/esp_board_spi.c

@@ -52,6 +52,11 @@ uint8_t esp_spi2_status(struct spi_dev_s *dev, uint32_t devid)
 {
   uint8_t status = 0;
 
+  if (devid == SPIDEV_MMCSD(0))
+    {
+      return SPI_STATUS_PRESENT;
+    }
+
   return status;
 }
 

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

@@ -119,6 +119,10 @@
 #  include "espressif/esp_sha.h"
 #endif
 
+#ifdef CONFIG_MMCSD_SPI
+#  include "esp_board_mmcsd.h"
+#endif
+
 #include "esp32h2-devkit.h"
 
 /****************************************************************************
@@ -282,6 +286,14 @@ int esp_bringup(void)
 #  endif /* CONFIG_ESPRESSIF_SPI_BITBANG */
 #endif /* CONFIG_ESPRESSIF_SPI */
 
+#if defined(CONFIG_ESPRESSIF_SPI) && defined(CONFIG_MMCSD_SPI)
+  ret = esp_mmcsd_spi_initialize();
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "ERROR: failed to init MMCSD SPI\n");
+    }
+#endif
+
 #ifdef CONFIG_ESPRESSIF_SPIFLASH
   ret = board_spiflash_init();
   if (ret)