secure_boot: Checks secure boot efuses

ESP32 V1 and V2 - protection bits.
ESP32xx V2: revoke bits, protection bits

- refactor efuse component
- adds some APIs for esp32 chips as well as for esp32xx chips

components/efuse/esp32c3/include/esp_efuse.h

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+// Copyright 2020 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
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief Type of eFuse blocks ESP32C3
+ */
+typedef enum {
+    EFUSE_BLK0                 = 0,   /**< Number of eFuse BLOCK0. REPEAT_DATA */
+
+    EFUSE_BLK1                 = 1,   /**< Number of eFuse BLOCK1. MAC_SPI_8M_SYS */
+
+    EFUSE_BLK2                 = 2,   /**< Number of eFuse BLOCK2. SYS_DATA_PART1 */
+    EFUSE_BLK_SYS_DATA_PART1   = 2,   /**< Number of eFuse BLOCK2. SYS_DATA_PART1 */
+
+    EFUSE_BLK3                 = 3,   /**< Number of eFuse BLOCK3. USER_DATA*/
+    EFUSE_BLK_USER_DATA        = 3,   /**< Number of eFuse BLOCK3. USER_DATA*/
+
+    EFUSE_BLK4                 = 4,   /**< Number of eFuse BLOCK4. KEY0 */
+    EFUSE_BLK_KEY0             = 4,   /**< Number of eFuse BLOCK4. KEY0 */
+
+    EFUSE_BLK5                 = 5,   /**< Number of eFuse BLOCK5. KEY1 */
+    EFUSE_BLK_KEY1             = 5,   /**< Number of eFuse BLOCK5. KEY1 */
+
+    EFUSE_BLK6                 = 6,   /**< Number of eFuse BLOCK6. KEY2 */
+    EFUSE_BLK_KEY2             = 6,   /**< Number of eFuse BLOCK6. KEY2 */
+
+    EFUSE_BLK7                 = 7,   /**< Number of eFuse BLOCK7. KEY3 */
+    EFUSE_BLK_KEY3             = 7,   /**< Number of eFuse BLOCK7. KEY3 */
+
+    EFUSE_BLK8                 = 8,   /**< Number of eFuse BLOCK8. KEY4 */
+    EFUSE_BLK_KEY4             = 8,   /**< Number of eFuse BLOCK8. KEY4 */
+
+    EFUSE_BLK9                 = 9,   /**< Number of eFuse BLOCK9. KEY5 */
+    EFUSE_BLK_KEY5             = 9,   /**< Number of eFuse BLOCK9. KEY5 */
+    EFUSE_BLK_KEY_MAX          = 10,
+
+    EFUSE_BLK10                = 10,  /**< Number of eFuse BLOCK10. SYS_DATA_PART2 */
+    EFUSE_BLK_SYS_DATA_PART2   = 10,  /**< Number of eFuse BLOCK10. SYS_DATA_PART2 */
+
+    EFUSE_BLK_MAX
+} esp_efuse_block_t;
+
+/**
+ * @brief Type of coding scheme
+ */
+typedef enum {
+    EFUSE_CODING_SCHEME_NONE    = 0,    /**< None */
+    EFUSE_CODING_SCHEME_RS      = 3,    /**< Reed-Solomon coding */
+} esp_efuse_coding_scheme_t;
+
+#ifdef __cplusplus
+}
+#endif

components/efuse/esp32c3/include/esp_efuse_rtc_calib.h

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+// Copyright 2020 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
+
+#include <esp_types.h>
+#include <esp_err.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief Get the RTC calibration efuse version
+ *
+ * @return Version of the stored efuse
+ */
+int esp_efuse_rtc_calib_get_ver(void);
+
+/**
+ * @brief Get the init code in the efuse, for the corresponding attenuation.
+ *
+ * @param version Version of the stored efuse
+ * @param atten  Attenuation of the init code
+ * @return The init code stored in efuse
+ */
+uint16_t esp_efuse_rtc_calib_get_init_code(int version, int atten);
+
+/**
+ * @brief Get the calibration digits stored in the efuse, and the corresponding voltage.
+ *
+ * @param version Version of the stored efuse
+ * @param atten         Attenuation to use
+ * @param out_digi      Output buffer of the digits
+ * @param out_vol_mv    Output of the voltage, in mV
+ * @return
+ *      - ESP_ERR_INVALID_ARG: If efuse version or attenuation is invalid
+ *      - ESP_OK: if success
+ */
+esp_err_t esp_efuse_rtc_calib_get_cal_voltage(int version, int atten, uint32_t* out_digi, uint32_t* out_vol_mv);
+
+#ifdef __cplusplus
+}
+#endif