openthread: support updating RCP with OTA over spinel

components/openthread/include/esp_openthread_rcp_update.h

@@ -0,0 +1,50 @@
+/*
+ * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#pragma once
+
+#include "esp_openthread.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief This function triggers an RCP firmware update.
+ *
+ * @return
+ *      - ESP_OK
+ *      - ESP_FAIL
+ *
+ */
+esp_err_t esp_openthread_rcp_update_start(void);
+
+/**
+ * @brief This function writes sequential firmware update data to the RCP.
+ *
+ * @param[in] data  The firmware data slice
+ * @param[in] size  The data slice size
+ *
+ * @return
+ *      - ESP_OK
+ *      - ESP_FAIL
+ *
+ */
+esp_err_t esp_openthread_rcp_update_write(uint8_t *data, size_t size);
+
+/**
+ * @brief This function commits the firmware update and reboots the RCP.
+ *
+ * @return
+ *      - ESP_OK
+ *      - ESP_FAIL
+ *
+ */
+esp_err_t esp_openthread_rcp_update_commit(void);
+
+#ifdef __cplusplus
+}
+#endif

components/openthread/private_include/openthread-core-esp32x-ftd-config.h

@@ -391,6 +391,8 @@
 #endif
 #endif
 
+#define OPENTHREAD_ENABLE_NCP_VENDOR_HOOK 1
+
 #if CONFIG_OPENTHREAD_FTD
 #define OPENTHREAD_FTD 1
 #elif CONFIG_OPENTHREAD_MTD

components/openthread/private_include/openthread-core-esp32x-radio-config.h

@@ -286,6 +286,8 @@
  */
 #define OPENTHREAD_CONFIG_MAC_SOFTWARE_TX_TIMING_ENABLE 1
 
+#define OPENTHREAD_ENABLE_NCP_VENDOR_HOOK 1
+
 /**
  * The configurable definitions via Kconfig
  */

examples/openthread/ot_rcp/partitions.csv

@@ -1,6 +1,8 @@
 # Name,   Type, SubType, Offset,  Size, Flags
 # Note: if you have increased the bootloader size, make sure to update the offsets to avoid overlap
 nvs,        data, nvs,      0x9000,  0x6000,
-phy_init,   data, phy,      0xf000,  0x1000,
-factory,    app,  factory,  0x10000, 1M,
-ot_storage, data, 0x3a,            , 0x2000,
+otadata,    data, ota,      ,        0x2000,
+phy_init,   data, phy,      ,        0x1000,
+ot_storage, data, 0x3a,     ,        0x2000,
+ota_0,      app,  ota_0,    ,        900K,
+ota_1,      app,  ota_1,    ,        900K,