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"Das U-Boot" Source Tree
1/* SPDX-License-Identifier: GPL-2.0+ */
2/*
3 * (C) Copyright 2018, Linaro Limited
4 */
5
6#ifndef _AVB_VERIFY_H
7#define _AVB_VERIFY_H
8
9#include <../lib/libavb/libavb.h>
10#include <mapmem.h>
11#include <mmc.h>
12
13#define AVB_MAX_ARGS 1024
14#define VERITY_TABLE_OPT_RESTART "restart_on_corruption"
15#define VERITY_TABLE_OPT_LOGGING "ignore_corruption"
16#define ALLOWED_BUF_ALIGN 8
17
18enum avb_boot_state {
19 AVB_GREEN,
20 AVB_YELLOW,
21 AVB_ORANGE,
22 AVB_RED,
23};
24
25struct AvbOpsData {
26 struct AvbOps ops;
27 int mmc_dev;
28 enum avb_boot_state boot_state;
29#ifdef CONFIG_OPTEE_TA_AVB
30 struct udevice *tee;
31 u32 session;
32#endif
33};
34
35struct mmc_part {
36 int dev_num;
37 struct mmc *mmc;
38 struct blk_desc *mmc_blk;
39 struct disk_partition info;
40};
41
42enum mmc_io_type {
43 IO_READ,
44 IO_WRITE
45};
46
47AvbOps *avb_ops_alloc(int boot_device);
48void avb_ops_free(AvbOps *ops);
49
50char *avb_set_state(AvbOps *ops, enum avb_boot_state boot_state);
51char *avb_set_enforce_verity(const char *cmdline);
52char *avb_set_ignore_corruption(const char *cmdline);
53
54char *append_cmd_line(char *cmdline_orig, char *cmdline_new);
55const char *str_avb_io_error(AvbIOResult res);
56const char *str_avb_slot_error(AvbSlotVerifyResult res);
57/**
58 * ============================================================================
59 * I/O helper inline functions
60 * ============================================================================
61 */
62static inline uint64_t calc_offset(struct mmc_part *part, int64_t offset)
63{
64 u64 part_size = part->info.size * part->info.blksz;
65
66 if (offset < 0)
67 return part_size + offset;
68
69 return offset;
70}
71
72static inline size_t get_sector_buf_size(void)
73{
74 return (size_t)CONFIG_AVB_BUF_SIZE;
75}
76
77static inline void *get_sector_buf(void)
78{
79 return map_sysmem(CONFIG_AVB_BUF_ADDR, CONFIG_AVB_BUF_SIZE);
80}
81
82static inline bool is_buf_unaligned(void *buffer)
83{
84 return (bool)((uintptr_t)buffer % ALLOWED_BUF_ALIGN);
85}
86
87static inline int get_boot_device(AvbOps *ops)
88{
89 struct AvbOpsData *data;
90
91 if (ops) {
92 data = ops->user_data;
93 if (data)
94 return data->mmc_dev;
95 }
96
97 return -1;
98}
99
100#endif /* _AVB_VERIFY_H */