File: internal.c

package info (click to toggle)
flashrom 0.9.2+r1141-2
  • links: PTS
  • area: main
  • in suites: squeeze
  • size: 1,536 kB
  • ctags: 1,827
  • sloc: ansic: 20,878; makefile: 322
file content (309 lines) | stat: -rw-r--r-- 7,934 bytes parent folder | download
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
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
/*
 * This file is part of the flashrom project.
 *
 * Copyright (C) 2009 Carl-Daniel Hailfinger
 *
 * 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; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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 <stdint.h>
#include <string.h>
#include <stdlib.h>
#include <sys/types.h>
#include "flash.h"
#include "programmer.h"

#if NEED_PCI == 1
struct pci_dev *pci_dev_find_filter(struct pci_filter filter)
{
	struct pci_dev *temp;

	for (temp = pacc->devices; temp; temp = temp->next)
		if (pci_filter_match(&filter, temp))
			return temp;

	return NULL;
}

struct pci_dev *pci_dev_find_vendorclass(uint16_t vendor, uint16_t class)
{
	struct pci_dev *temp;
	struct pci_filter filter;
	uint16_t tmp2;

	pci_filter_init(NULL, &filter);
	filter.vendor = vendor;

	for (temp = pacc->devices; temp; temp = temp->next)
		if (pci_filter_match(&filter, temp)) {
			/* Read PCI class */
			tmp2 = pci_read_word(temp, 0x0a);
			if (tmp2 == class)
				return temp;
		}

	return NULL;
}

struct pci_dev *pci_dev_find(uint16_t vendor, uint16_t device)
{
	struct pci_dev *temp;
	struct pci_filter filter;

	pci_filter_init(NULL, &filter);
	filter.vendor = vendor;
	filter.device = device;

	for (temp = pacc->devices; temp; temp = temp->next)
		if (pci_filter_match(&filter, temp))
			return temp;

	return NULL;
}

struct pci_dev *pci_card_find(uint16_t vendor, uint16_t device,
			      uint16_t card_vendor, uint16_t card_device)
{
	struct pci_dev *temp;
	struct pci_filter filter;

	pci_filter_init(NULL, &filter);
	filter.vendor = vendor;
	filter.device = device;

	for (temp = pacc->devices; temp; temp = temp->next)
		if (pci_filter_match(&filter, temp)) {
			if ((card_vendor ==
			     pci_read_word(temp, PCI_SUBSYSTEM_VENDOR_ID))
			    && (card_device ==
				pci_read_word(temp, PCI_SUBSYSTEM_ID)))
				return temp;
		}

	return NULL;
}
#endif

#if CONFIG_INTERNAL == 1
int force_boardenable = 0;
int force_boardmismatch = 0;

#if defined(__i386__) || defined(__x86_64__)
struct superio superio = {};

void probe_superio(void)
{
	superio = probe_superio_ite();
#if 0
	/* Winbond Super I/O code is not yet available. */
	if (superio.vendor == SUPERIO_VENDOR_NONE)
		superio = probe_superio_winbond();
#endif
}
#endif

int is_laptop = 0;

int internal_init(void)
{
	int ret = 0;
	int force_laptop = 0;
	char *arg;

	arg = extract_programmer_param("boardenable");
	if (arg && !strcmp(arg,"force")) {
		force_boardenable = 1;
	} else if (arg && !strlen(arg)) {
		msg_perr("Missing argument for boardenable.\n");
		free(arg);
		return 1;
	} else if (arg) {
		msg_perr("Unknown argument for boardenable: %s\n", arg);
		free(arg);
		return 1;
	}
	free(arg);

	arg = extract_programmer_param("boardmismatch");
	if (arg && !strcmp(arg,"force")) {
		force_boardmismatch = 1;
	} else if (arg && !strlen(arg)) {
		msg_perr("Missing argument for boardmismatch.\n");
		free(arg);
		return 1;
	} else if (arg) {
		msg_perr("Unknown argument for boardmismatch: %s\n", arg);
		free(arg);
		return 1;
	}
	free(arg);

	arg = extract_programmer_param("laptop");
	if (arg && !strcmp(arg,"force_I_want_a_brick")) {
		force_laptop = 1;
	} else if (arg && !strlen(arg)) {
		msg_perr("Missing argument for laptop.\n");
		free(arg);
		return 1;
	} else if (arg) {
		msg_perr("Unknown argument for laptop: %s\n", arg);
		free(arg);
		return 1;
	}
	free(arg);

	get_io_perms();

	/* Initialize PCI access for flash enables */
	pacc = pci_alloc();	/* Get the pci_access structure */
	/* Set all options you want -- here we stick with the defaults */
	pci_init(pacc);		/* Initialize the PCI library */
	pci_scan_bus(pacc);	/* We want to get the list of devices */

	if (processor_flash_enable()) {
		msg_perr("Processor detection/init failed.\n"
			 "Aborting.\n");
		return 1;
	}

#if defined(__i386__) || defined(__x86_64__)
	/* We look at the cbtable first to see if we need a
	 * mainboard specific flash enable sequence.
	 */
	coreboot_init();

	dmi_init();

	/* Probe for the Super I/O chip and fill global struct superio. */
	probe_superio();
#else
	/* FIXME: Enable cbtable searching on all non-x86 platforms supported
	 *        by coreboot.
	 * FIXME: Find a replacement for DMI on non-x86.
	 * FIXME: Enable Super I/O probing once port I/O is possible.
	 */
#endif

	/* Warn if a laptop is detected. */
	if (is_laptop) {
		msg_perr("========================================================================\n"
			 "WARNING! You seem to be running flashrom on a laptop.\n"
			 "Laptops, notebooks and netbooks are difficult to support and we recommend\n"
			 "to use the vendor flashing utility. The embedded controller (EC) in these\n"
			 "machines often interacts badly with flashing.\n"
			 "See http://www.flashrom.org/Laptops for details.\n\n"
			 "If flash is shared with the EC, erase is guaranteed to brick your laptop\n"
			 "and write may brick your laptop.\n"
			 "Read and probe may irritate your EC and cause fan failure, backlight\n"
			 "failure and sudden poweroff.\n"
			 "You have been warned.\n"
			 "========================================================================\n");
		if (force_laptop) {
			msg_perr("Proceeding anyway because user specified "
				 "laptop=force_I_want_a_brick\n");
		} else {
			msg_perr("Aborting.\n");
			exit(1);
		}
	}

#if __FLASHROM_LITTLE_ENDIAN__
	/* try to enable it. Failure IS an option, since not all motherboards
	 * really need this to be done, etc., etc.
	 */
	ret = chipset_flash_enable();
	if (ret == -2) {
		msg_perr("WARNING: No chipset found. Flash detection "
			 "will most likely fail.\n");
	}

#if defined(__i386__) || defined(__x86_64__)
	/* Probe unconditionally for IT87* LPC->SPI translation and for
	 * IT87* Parallel write enable.
	 */
	init_superio_ite();
#endif

	board_flash_enable(lb_vendor, lb_part);

	/* Even if chipset init returns an error code, we don't want to abort.
	 * The error code might have been a warning only.
	 * Besides that, we don't check the board enable return code either.
	 */
#if defined(__i386__) || defined(__x86_64__)
	return 0;
#else
	msg_perr("Your platform is not supported yet for the internal "
		 "programmer due to missing\n"
		 "flash_base and top/bottom alignment information.\n"
		 "Aborting.\n");
	return 1;
#endif
#else
	/* FIXME: Remove this unconditional abort once all PCI drivers are
	 * converted to use little-endian accesses for memory BARs.
	 */
	msg_perr("Your platform is not supported yet for the internal "
		 "programmer because it has\n"
		 "not been converted from native endian to little endian "
		 "access yet.\n"
		 "Aborting.\n");
	return 1;
#endif
}

int internal_shutdown(void)
{
	release_io_perms();

	return 0;
}
#endif

void internal_chip_writeb(uint8_t val, chipaddr addr)
{
	mmio_writeb(val, (void *) addr);
}

void internal_chip_writew(uint16_t val, chipaddr addr)
{
	mmio_writew(val, (void *) addr);
}

void internal_chip_writel(uint32_t val, chipaddr addr)
{
	mmio_writel(val, (void *) addr);
}

uint8_t internal_chip_readb(const chipaddr addr)
{
	return mmio_readb((void *) addr);
}

uint16_t internal_chip_readw(const chipaddr addr)
{
	return mmio_readw((void *) addr);
}

uint32_t internal_chip_readl(const chipaddr addr)
{
	return mmio_readl((void *) addr);
}

void internal_chip_readn(uint8_t *buf, const chipaddr addr, size_t len)
{
	memcpy(buf, (void *)addr, len);
	return;
}