spi_flash: support working on differnt buses and frequency

components/soc/include/hal/esp_flash_err.h

@@ -0,0 +1,39 @@
+// Copyright 2015-2019 Espressif Systems (Shanghai) PTE LTD
+//
+// Licensed 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.
+
+#pragma once
+
+#include <stdint.h>
+#include "esp_err.h"
+
+/*
+ * Possible errors returned from esp flash internal functions, these error codes
+ * should be consistent with esp_err_t codes. But in order to make the source
+ * files less dependent to esp_err_t, they use the error codes defined in this
+ * replacable header. This header should ensure the consistency to esp_err_t.
+ */
+
+/* These should be consistent with esp_err_t errors */
+#define ESP_ERR_FLASH_SIZE_NOT_MATCH    ESP_ERR_INVALID_SIZE        ///< The chip doesn't have enough space for the current partition table
+#define ESP_ERR_FLASH_NO_RESPONSE       ESP_ERR_INVALID_RESPONSE    ///< Chip did not respond to the command, or timed out.
+
+
+#define ESP_ERR_FLASH_ERR_BASE          0x6000  ///< Starting number of Flash error codes */
+//The ROM code has already taken 1 and 2, to avoid possible conflicts, start from 3.
+#define ESP_ERR_FLASH_NOT_INITIALISED   (ESP_ERR_FLASH_ERR_BASE+3) ///< esp_flash_chip_t structure not correctly initialised by esp_flash_init().
+#define ESP_ERR_FLASH_UNSUPPORTED_HOST  (ESP_ERR_FLASH_ERR_BASE+4) ///< Requested operation isn't supported via this host SPI bus (chip->spi field).
+#define ESP_ERR_FLASH_UNSUPPORTED_CHIP  (ESP_ERR_FLASH_ERR_BASE+5) ///< Requested operation isn't supported by this model of SPI flash chip.
+#define ESP_ERR_FLASH_PROTECTED         (ESP_ERR_FLASH_ERR_BASE+6) ///< Write operation failed due to chip's write protection being enabled.
+
+