| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * 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. |
| */ |
| |
| #ifndef BOOTINFO_H_ |
| #define BOOTINFO_H_ |
| |
| #include <stdint.h> |
| #include <stdbool.h> |
| |
| typedef struct brillo_slot_info { |
| // Flag mean that the slot can bootable or not. |
| uint8_t bootable :1; |
| |
| // Set to true when the OS has successfully booted. |
| uint8_t boot_successful :1; |
| |
| // Priorty number range [0:15], with 15 meaning highest priortiy, |
| // 1 meaning lowest priority and 0 mean that the slot is unbootable. |
| uint8_t priority; |
| |
| // Boot times left range [0:7]. |
| uint8_t tries_remaining; |
| |
| uint8_t reserved[1]; |
| } BrilloSlotInfo; |
| |
| typedef struct BrilloBootInfo { |
| // Magic for identification |
| uint8_t magic[3]; |
| |
| // Version of BrilloBootInfo struct, must be 0 or larger. |
| uint8_t version; |
| |
| // Information about each slot. |
| BrilloSlotInfo slot_info[2]; |
| |
| uint8_t reserved[20]; |
| } BrilloBootInfo; |
| |
| // Loading and saving BrillBootInfo instances. |
| bool boot_info_load(BrilloBootInfo *out_info); |
| bool boot_info_save(BrilloBootInfo *info); |
| |
| // Returns non-zero if valid. |
| bool boot_info_validate(BrilloBootInfo* info); |
| void boot_info_reset(BrilloBootInfo* info); |
| |
| #if defined(__GNUC__) && __GNUC__ >= 4 && __GNUC_MINOR__ >= 6 |
| _Static_assert(sizeof(BrilloBootInfo) == 32, "BrilloBootInfo has wrong size"); |
| #endif |
| |
| #endif // BOOTINFO_H |