1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Copyright (C) 2020 Eugeniu Rosca <rosca.eugeniu@gmail.com>
4 *
5 * Android Bootloader Control Block Header
6 */
7
8#ifndef __BCB_H__
9#define __BCB_H__
10
11#include <part.h>
12
13enum bcb_field {
14	BCB_FIELD_COMMAND,
15	BCB_FIELD_STATUS,
16	BCB_FIELD_RECOVERY,
17	BCB_FIELD_STAGE
18};
19
20#if IS_ENABLED(CONFIG_CMD_BCB)
21
22int bcb_find_partition_and_load(const char *iface,
23				int devnum, char *partp);
24int bcb_load(struct blk_desc *block_description,
25	     struct disk_partition *disk_partition);
26int bcb_set(enum bcb_field field, const char *value);
27
28/**
29 * bcb_get() - get the field value.
30 * @field: field to get
31 * @value_out: buffer to copy bcb field value to
32 * @value_size: buffer size to avoid overflow in case
33 *              value_out is smaller then the field value
34 */
35int bcb_get(enum bcb_field field, char *value_out, size_t value_size);
36
37int bcb_store(void);
38void bcb_reset(void);
39
40#else
41
42#include <linux/errno.h>
43
44static inline int bcb_load(struct blk_desc *block_description,
45			   struct disk_partition *disk_partition)
46{
47	return -EOPNOTSUPP;
48}
49
50static inline int bcb_find_partition_and_load(const char *iface,
51					      int devnum, char *partp)
52{
53	return -EOPNOTSUPP;
54}
55
56static inline int bcb_set(enum bcb_field field, const char *value)
57{
58	return -EOPNOTSUPP;
59}
60
61static inline int bcb_get(enum bcb_field field, char *value_out)
62{
63	return -EOPNOTSUPP;
64}
65
66static inline int bcb_store(void)
67{
68	return -EOPNOTSUPP;
69}
70
71static inline void bcb_reset(void)
72{
73}
74#endif
75
76#endif /* __BCB_H__ */
77