1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 /* 18 * This file contains data type definitions and constants that are useful to 19 * code interacting with and implementing the NVRAM HAL, even though it doesn't 20 * use the actual NVRAM HAL module interface. Keeping this in a separate file 21 * simplifies inclusion in low-level code which can't easily include the heavier 22 * hardware.h due to lacking standard headers. 23 */ 24 25 #ifndef ANDROID_HARDWARE_NVRAM_DEFS_H 26 #define ANDROID_HARDWARE_NVRAM_DEFS_H 27 28 #include <stdint.h> 29 30 #ifdef __cplusplus 31 extern "C" { 32 #endif // __cplusplus 33 34 /* Values returned by nvram_device methods. */ 35 typedef uint32_t nvram_result_t; 36 37 const nvram_result_t NV_RESULT_SUCCESS = 0; 38 const nvram_result_t NV_RESULT_INTERNAL_ERROR = 1; 39 const nvram_result_t NV_RESULT_ACCESS_DENIED = 2; 40 const nvram_result_t NV_RESULT_INVALID_PARAMETER = 3; 41 const nvram_result_t NV_RESULT_SPACE_DOES_NOT_EXIST = 4; 42 const nvram_result_t NV_RESULT_SPACE_ALREADY_EXISTS = 5; 43 const nvram_result_t NV_RESULT_OPERATION_DISABLED = 6; 44 45 /* Values describing available access controls. */ 46 typedef uint32_t nvram_control_t; 47 48 const nvram_control_t NV_CONTROL_PERSISTENT_WRITE_LOCK = 1; 49 const nvram_control_t NV_CONTROL_BOOT_WRITE_LOCK = 2; 50 const nvram_control_t NV_CONTROL_BOOT_READ_LOCK = 3; 51 const nvram_control_t NV_CONTROL_WRITE_AUTHORIZATION = 4; 52 const nvram_control_t NV_CONTROL_READ_AUTHORIZATION = 5; 53 const nvram_control_t NV_CONTROL_WRITE_EXTEND = 6; 54 55 const uint32_t NV_UNLIMITED_SPACES = 0xFFFFFFFF; 56 57 #ifdef __cplusplus 58 } // extern "C" 59 #endif // __cplusplus 60 61 #endif // ANDROID_HARDWARE_NVRAM_DEFS_H 62
