bootctrl/bctl_metadata.h

   1 /*
   2  * Copyright (C) 2020 The LineageOS 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 #ifndef SAMSUNG_BCTL_METADATA_H
  18 #define SAMSUNG_BCTL_METADATA_H
  19
  20 #include <iostream>
  21
  22 #define BCTL_METADATA_PARTITION "/dev/block/bootdevice/by-name/slotinfo"
  23 #define BCTL_METADATA_OFFSET 0x800
  24 #define BCTL_METADATA_MAGIC 0x43425845
  25
  26 #define SLOT_SUFFIX_A "_a"
  27 #define SLOT_SUFFIX_B "_b"
  28
  29 // Our internal data structures
  30 struct slot_metadata_t {
  31     uint32_t magic;
  32     uint8_t bootable;
  33     uint8_t is_active;
  34     uint8_t boot_successful;
  35     uint8_t tries_remaining;
  36     uint8_t reserved[8];
  37 };
  38
  39 struct bctl_metadata_t {
  40     slot_metadata_t slot_info[2];
  41 };
  42
  43 #endif  // SAMSUNG_BCTL_METADATA_H