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65 lines
1.9 KiB
65 lines
1.9 KiB
/* |
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* Copyright (C) 2015 The Android Open Source Project |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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#ifndef BOOTINFO_H_ |
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#define BOOTINFO_H_ |
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#include <stdint.h> |
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#include <stdbool.h> |
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typedef struct BrilloSlotInfo { |
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uint8_t bootable : 1; |
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uint8_t reserved[3]; |
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} BrilloSlotInfo; |
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typedef struct BrilloBootInfo { |
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// Used by fs_mgr. Must be NUL terminated. |
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char bootctrl_suffix[4]; |
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// Magic for identification - must be 'B', 'C', 'c' (short for |
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// "boot_control copy" implementation). |
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uint8_t magic[3]; |
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// Version of BrilloBootInfo struct, must be 0 or larger. |
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uint8_t version; |
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// Currently active slot. |
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uint8_t active_slot; |
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// Information about each slot. |
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BrilloSlotInfo slot_info[2]; |
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uint8_t reserved[15]; |
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} BrilloBootInfo; |
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// Loading and saving BrillBootInfo instances. |
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bool boot_info_load(BrilloBootInfo *out_info); |
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bool boot_info_save(BrilloBootInfo *info); |
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// Returns non-zero if valid. |
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bool boot_info_validate(BrilloBootInfo* info); |
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void boot_info_reset(BrilloBootInfo* info); |
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// Opens partition by |name|, e.g. "misc" or "boot_a" with |flags| |
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// (e.g. O_RDONLY or O_RDWR) passed directly to open(2). Returns fd on |
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// success and -1 on error. |
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int boot_info_open_partition(const char *name, uint64_t *out_size, int flags); |
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#if defined(__GNUC__) && __GNUC__ >= 4 && __GNUC_MINOR__ >= 6 |
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_Static_assert(sizeof(BrilloBootInfo) == 32, "BrilloBootInfo has wrong size"); |
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#endif |
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#endif // BOOTINFO_H
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