blob: 0943c950b7837543462f3e8a5a2e2e075d94d521 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
|
/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/usr/pnor/ffs.h $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* COPYRIGHT International Business Machines Corp. 2012,2014 */
/* */
/* 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. */
/* */
/* IBM_PROLOG_END_TAG */
/*
* Copyright (c) International Business Machines Corp., 2012
*
* FSP Flash Structure
*
* This header defines the layout for the FSP Flash Structure.
*/
#ifndef __FFS_H__
#define __FFS_H__
/* Pull in the correct header depending on what is being built */
#if defined(__KERNEL__)
#include <linux/types.h>
#else
#include <stdint.h>
#endif
/* The version of this partition implementation */
#define FFS_VERSION_1 1
/* Magic number for the partition header (ASCII 'PART') */
#define FFS_MAGIC 0x50415254
/* The maximum length of the partition name */
#define PART_NAME_MAX 15
/*
* Sizes of the data structures
*/
#define FFS_HDR_SIZE sizeof(struct ffs_hdr)
#define FFS_ENTRY_SIZE sizeof(struct ffs_entry)
/*
* Sizes of the data structures w/o checksum
*/
#define FFS_HDR_SIZE_CSUM (FFS_HDR_SIZE - sizeof(uint32_t))
#define FFS_ENTRY_SIZE_CSUM (FFS_ENTRY_SIZE - sizeof(uint32_t))
/* pid of logical partitions/containers */
#define FFS_PID_TOPLEVEL 0xFFFFFFFF
/*
* Type of image contained w/in partition
*/
enum type {
FFS_TYPE_DATA = 1,
FFS_TYPE_LOGICAL = 2,
FFS_TYPE_PARTITION = 3,
};
/*
* Flag bit definitions
*/
#define FFS_FLAGS_PROTECTED 0x0001
#define FFS_FLAGS_U_BOOT_ENV 0x0002
/*
* Number of user data words
*/
#define FFS_USER_WORDS 16
/**
* struct ffs_entry - Partition entry
*
* @name: Opaque null terminated string
* @base: Starting offset of partition in flash (in hdr.block_size)
* @size: Partition size (in hdr.block_size)
* @pid: Parent partition entry (FFS_PID_TOPLEVEL for toplevel)
* @id: Partition entry ID [1..65536]
* @type: Describe type of partition
* @flags: Partition attributes (optional)
* @actual: Actual partition size (in bytes)
* @resvd: Reserved words for future use
* @user: User data (optional)
* @checksum: Partition entry checksum (includes all above)
*/
struct ffs_entry {
char name[PART_NAME_MAX + 1];
uint32_t base;
uint32_t size;
uint32_t pid;
uint32_t id;
uint32_t type;
uint32_t flags;
uint32_t actual;
uint32_t resvd[4];
struct {
uint32_t data[FFS_USER_WORDS];
} user;
uint32_t checksum;
} __attribute__ ((packed));
/**
* struct ffs_hdr - FSP Flash Structure header
*
* @magic: Eye catcher/corruption detector
* @version: Version of the structure
* @size: Size of partition table (in block_size)
* @entry_size: Size of struct ffs_entry element (in bytes)
* @entry_count: Number of struct ffs_entry elements in @entries array
* @block_size: Size of block on device (in bytes)
* @block_count: Number of blocks on device
* @resvd: Reserved words for future use
* @checksum: Header checksum
* @entries: Pointer to array of partition entries
*/
struct ffs_hdr {
uint32_t magic;
uint32_t version;
uint32_t size;
uint32_t entry_size;
uint32_t entry_count;
uint32_t block_size;
uint32_t block_count;
uint32_t resvd[4];
uint32_t checksum;
struct ffs_entry entries[];
} __attribute__ ((packed));
#endif /* __FFS_H__ */
|
