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
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
|
/*
* common utility functions for cbfstool
*
* Copyright (C) 2009 coresystems GmbH
* written by Patrick Georgi <patrick.georgi@coresystems.de>
* Copyright (C) 2012 Google, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <libgen.h>
#include "common.h"
#include "cbfs.h"
/* Utilities */
int verbose = 0;
/* Small, OS/libc independent runtime check for endianess */
int is_big_endian(void)
{
static const uint32_t inttest = 0x12345678;
const uint8_t inttest_lsb = *(const uint8_t *)&inttest;
if (inttest_lsb == 0x12) {
return 1;
}
return 0;
}
static off_t get_file_size(FILE *f)
{
struct stat s;
int fd = fileno(f);
if (fd == -1) return -1;
if (fstat(fd, &s) == -1) return -1;
return s.st_size;
}
/* Buffer and file I/O */
int buffer_create(struct buffer *buffer, size_t size, const char *name)
{
buffer->name = strdup(name);
buffer->size = size;
buffer->data = (char *)malloc(buffer->size);
if (!buffer->data) {
fprintf(stderr, "buffer_create: Insufficient memory (0x%zx).\n",
size);
}
return (buffer->data == NULL);
}
int buffer_from_file(struct buffer *buffer, const char *filename)
{
FILE *fp = fopen(filename, "rb");
if (!fp) {
perror(filename);
return -1;
}
buffer->size = get_file_size(fp);
if (buffer->size == -1u) {
fprintf(stderr, "could not determine size of %s\n", filename);
fclose(fp);
return -1;
}
buffer->name = strdup(filename);
buffer->data = (char *)malloc(buffer->size);
assert(buffer->data);
if (fread(buffer->data, 1, buffer->size, fp) != buffer->size) {
fprintf(stderr, "incomplete read: %s\n", filename);
fclose(fp);
return -1;
}
fclose(fp);
return 0;
}
int buffer_write_file(struct buffer *buffer, const char *filename)
{
FILE *fp = fopen(filename, "wb");
if (!fp) {
perror(filename);
return -1;
}
assert(buffer && buffer->data);
if (fwrite(buffer->data, 1, buffer->size, fp) != buffer->size) {
fprintf(stderr, "incomplete write: %s\n", filename);
fclose(fp);
return -1;
}
fclose(fp);
return 0;
}
void buffer_delete(struct buffer *buffer)
{
assert(buffer);
if (buffer->name) {
free(buffer->name);
buffer->name = NULL;
}
if (buffer->data) {
free(buffer->data);
buffer->data = NULL;
}
buffer->size = 0;
}
void cbfs_file_get_header(struct buffer *buf, struct cbfs_file *file)
{
bgets(buf, &file->magic, sizeof(file->magic));
file->len = xdr_be.get32(buf);
file->type = xdr_be.get32(buf);
file->checksum = xdr_be.get32(buf);
file->offset = xdr_be.get32(buf);
}
static struct {
uint32_t arch;
const char *name;
} arch_names[] = {
{ CBFS_ARCHITECTURE_AARCH64, "arm64" },
{ CBFS_ARCHITECTURE_ARM, "arm" },
{ CBFS_ARCHITECTURE_MIPS, "mips" },
{ CBFS_ARCHITECTURE_RISCV, "riscv" },
{ CBFS_ARCHITECTURE_X86, "x86" },
{ CBFS_ARCHITECTURE_UNKNOWN, "unknown" }
};
uint32_t string_to_arch(const char *arch_string)
{
int i;
uint32_t ret = CBFS_ARCHITECTURE_UNKNOWN;
for (i = 0; i < ARRAY_SIZE(arch_names); i++) {
if (!strcasecmp(arch_string, arch_names[i].name)) {
ret = arch_names[i].arch;
break;
}
}
return ret;
}
const char *arch_to_string(uint32_t a)
{
int i;
const char *ret = NULL;
for (i = 0; i < ARRAY_SIZE(arch_names); i++) {
if (a == arch_names[i].arch) {
ret = arch_names[i].name;
break;
}
}
return ret;
}
static struct filetypes_t {
uint32_t type;
const char *name;
} filetypes[] = {
{CBFS_COMPONENT_STAGE, "stage"},
{CBFS_COMPONENT_PAYLOAD, "payload"},
{CBFS_COMPONENT_OPTIONROM, "optionrom"},
{CBFS_COMPONENT_BOOTSPLASH, "bootsplash"},
{CBFS_COMPONENT_RAW, "raw"},
{CBFS_COMPONENT_VSA, "vsa"},
{CBFS_COMPONENT_MBI, "mbi"},
{CBFS_COMPONENT_MICROCODE, "microcode"},
{CBFS_COMPONENT_FSP, "fsp"},
{CBFS_COMPONENT_MRC, "mrc"},
{CBFS_COMPONENT_CMOS_DEFAULT, "cmos default"},
{CBFS_COMPONENT_CMOS_LAYOUT, "cmos layout"},
{CBFS_COMPONENT_SPD, "spd"},
{CBFS_COMPONENT_MRC_CACHE, "mrc_cache"},
{CBFS_COMPONENT_DELETED, "deleted"},
{CBFS_COMPONENT_NULL, "null"}
};
void print_supported_filetypes(void)
{
int i, number = ARRAY_SIZE(filetypes);
for (i=0; i<number; i++) {
LOG(" %s%c", filetypes[i].name, (i==(number-1))?'\n':',');
if ((i%8) == 7)
LOG("\n");
}
}
uint64_t intfiletype(const char *name)
{
size_t i;
for (i = 0; i < (sizeof(filetypes) / sizeof(struct filetypes_t)); i++)
if (strcmp(filetypes[i].name, name) == 0)
return filetypes[i].type;
return -1;
}
|
