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
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
|
/*
* This file is part of the flashrom project.
*
* Copyright (C) 2005-2008 coresystems GmbH
* (Written by Stefan Reinauer <stepan@coresystems.de> for coresystems GmbH)
*
* 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 <stdlib.h>
#include <string.h>
#include <ctype.h>
#include "flash.h"
#if INTERNAL_SUPPORT == 1
char *mainboard_vendor = NULL;
char *mainboard_part = NULL;
#endif
int romimages = 0;
#define MAX_ROMLAYOUT 16
typedef struct {
unsigned int start;
unsigned int end;
unsigned int included;
char name[256];
} romlayout_t;
romlayout_t rom_entries[MAX_ROMLAYOUT];
#if INTERNAL_SUPPORT == 1 /* FIXME: Move the whole block to cbtable.c? */
static char *def_name = "DEFAULT";
int show_id(uint8_t *bios, int size, int force)
{
unsigned int *walk;
unsigned int mb_part_offset, mb_vendor_offset;
char *mb_part, *mb_vendor;
mainboard_vendor = def_name;
mainboard_part = def_name;
walk = (unsigned int *)(bios + size - 0x10);
walk--;
if ((*walk) == 0 || ((*walk) & 0x3ff) != 0) {
/* We might have an NVIDIA chipset BIOS which stores the ID
* information at a different location.
*/
walk = (unsigned int *)(bios + size - 0x80);
walk--;
}
/*
* Check if coreboot last image size is 0 or not a multiple of 1k or
* bigger than the chip or if the pointers to vendor ID or mainboard ID
* are outside the image of if the start of ID strings are nonsensical
* (nonprintable and not \0).
*/
mb_part_offset = *(walk - 1);
mb_vendor_offset = *(walk - 2);
if ((*walk) == 0 || ((*walk) & 0x3ff) != 0 || (*walk) > size ||
mb_part_offset > size || mb_vendor_offset > size) {
printf("Flash image seems to be a legacy BIOS. Disabling checks.\n");
return 0;
}
mb_part = (char *)(bios + size - mb_part_offset);
mb_vendor = (char *)(bios + size - mb_vendor_offset);
if (!isprint((unsigned char)*mb_part) ||
!isprint((unsigned char)*mb_vendor)) {
printf("Flash image seems to have garbage in the ID location."
" Disabling checks.\n");
return 0;
}
printf_debug("coreboot last image size "
"(not ROM size) is %d bytes.\n", *walk);
mainboard_part = strdup(mb_part);
mainboard_vendor = strdup(mb_vendor);
printf_debug("Manufacturer: %s\n", mainboard_vendor);
printf_debug("Mainboard ID: %s\n", mainboard_part);
/*
* If lb_vendor is not set, the coreboot table was
* not found. Nor was -m VENDOR:PART specified.
*/
if (!lb_vendor || !lb_part) {
printf("Note: If the following flash access fails, "
"try -m <vendor>:<mainboard>.\n");
return 0;
}
/* These comparisons are case insensitive to make things
* a little less user^Werror prone.
*/
if (!strcasecmp(mainboard_vendor, lb_vendor) &&
!strcasecmp(mainboard_part, lb_part)) {
printf_debug("This firmware image matches this mainboard.\n");
} else {
if (force_boardmismatch) {
printf("WARNING: This firmware image does not "
"seem to fit to this machine - forcing it.\n");
} else {
printf("ERROR: Your firmware image (%s:%s) does not "
"appear to\n be correct for the detected "
"mainboard (%s:%s)\n\nOverride with -p internal:"
"boardmismatch=force if you are absolutely sure "
"that\nyou are using a correct "
"image for this mainboard or override\nthe detected "
"values with --mainboard <vendor>:<mainboard>.\n\n",
mainboard_vendor, mainboard_part, lb_vendor,
lb_part);
exit(1);
}
}
return 0;
}
#endif
int read_romlayout(char *name)
{
FILE *romlayout;
char tempstr[256];
int i;
romlayout = fopen(name, "r");
if (!romlayout) {
fprintf(stderr, "ERROR: Could not open ROM layout (%s).\n",
name);
return -1;
}
while (!feof(romlayout)) {
char *tstr1, *tstr2;
if (2 != fscanf(romlayout, "%s %s\n", tempstr, rom_entries[romimages].name))
continue;
#if 0
// fscanf does not like arbitrary comments like that :( later
if (tempstr[0] == '#') {
continue;
}
#endif
tstr1 = strtok(tempstr, ":");
tstr2 = strtok(NULL, ":");
if (!tstr1 || !tstr2) {
fprintf(stderr, "Error parsing layout file.\n");
fclose(romlayout);
return 1;
}
rom_entries[romimages].start = strtol(tstr1, (char **)NULL, 16);
rom_entries[romimages].end = strtol(tstr2, (char **)NULL, 16);
rom_entries[romimages].included = 0;
romimages++;
}
for (i = 0; i < romimages; i++) {
printf_debug("romlayout %08x - %08x named %s\n",
rom_entries[i].start,
rom_entries[i].end, rom_entries[i].name);
}
fclose(romlayout);
return 0;
}
int find_romentry(char *name)
{
int i;
if (!romimages)
return -1;
printf("Looking for \"%s\"... ", name);
for (i = 0; i < romimages; i++) {
if (!strcmp(rom_entries[i].name, name)) {
rom_entries[i].included = 1;
printf("found.\n");
return i;
}
}
printf("not found.\n"); // Not found. Error.
return -1;
}
int handle_romentries(uint8_t *buffer, struct flashchip *flash)
{
int i;
// This function does not save flash write cycles.
//
// Also it does not cope with overlapping rom layout
// sections.
// example:
// 00000000:00008fff gfxrom
// 00009000:0003ffff normal
// 00040000:0007ffff fallback
// 00000000:0007ffff all
//
// If you'd specify -i all the included flag of all other
// sections is still 0, so no changes will be made to the
// flash. Same thing if you specify -i normal -i all only
// normal will be updated and the rest will be kept.
for (i = 0; i < romimages; i++) {
if (rom_entries[i].included)
continue;
flash->read(flash, buffer + rom_entries[i].start,
rom_entries[i].start,
rom_entries[i].end - rom_entries[i].start + 1);
}
return 0;
}
|
