summaryrefslogtreecommitdiff
path: root/util/flashrom/chipset_enable.c
blob: 8add4d9de02f1137809e19a56e36c4581e16ab46 (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
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
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
/*
 *   flash rom utility: enable flash writes
 *
 *   Copyright (C) 2000 Silicon Integrated System Corporation
 *   Copyright (C) 2005-2007 coresystems GmbH <stepan@coresystems.de>
 *   Copyright (C) 2006 Uwe Hermann <uwe@hermann-uwe.de>
 *
 *   This program is free software; you can redistribute it and/or
 *   modify it under the terms of the GNU General Public License
 *   version 2
 *
 */

#include <stdio.h>
#include <pci/pci.h>
#include <stdlib.h>

#include "flash.h"
#include "debug.h"

static int enable_flash_sis630(struct pci_dev *dev, char *name)
{
	char b;

	/* Enable 0xFFF8000~0xFFFF0000 decoding on SiS 540/630 */
	outl(0x80000840, 0x0cf8);
	b = inb(0x0cfc) | 0x0b;
	outb(b, 0xcfc);
	/* Flash write enable on SiS 540/630 */
	outl(0x80000845, 0x0cf8);
	b = inb(0x0cfd) | 0x40;
	outb(b, 0xcfd);

	/* The same thing on SiS 950 SuperIO side */
	outb(0x87, 0x2e);
	outb(0x01, 0x2e);
	outb(0x55, 0x2e);
	outb(0x55, 0x2e);

	if (inb(0x2f) != 0x87) {
		outb(0x87, 0x4e);
		outb(0x01, 0x4e);
		outb(0x55, 0x4e);
		outb(0xaa, 0x4e);
		if (inb(0x4f) != 0x87) {
			printf("Can not access SiS 950\n");
			return -1;
		}
		outb(0x24, 0x4e);
		b = inb(0x4f) | 0xfc;
		outb(0x24, 0x4e);
		outb(b, 0x4f);
		outb(0x02, 0x4e);
		outb(0x02, 0x4f);
	}

	outb(0x24, 0x2e);
	printf("2f is %#x\n", inb(0x2f));
	b = inb(0x2f) | 0xfc;
	outb(0x24, 0x2e);
	outb(b, 0x2f);

	outb(0x02, 0x2e);
	outb(0x02, 0x2f);

	return 0;
}

/* Datasheet:
 *   - Name: 82371AB PCI-TO-ISA / IDE XCELERATOR (PIIX4)
 *   - URL: http://www.intel.com/design/intarch/datashts/290562.htm
 *   - PDF: http://www.intel.com/design/intarch/datashts/29056201.pdf
 *   - Order Number: 290562-001
 */
static int enable_flash_piix4(struct pci_dev *dev, char *name)
{
	uint16_t old, new;
	uint16_t xbcs = 0x4e; /* X-Bus Chip Select register. */

	old = pci_read_word(dev, xbcs);

	/* Set bit 9: 1-Meg Extended BIOS Enable (PCI master accesses to
                      FFF00000-FFF7FFFF are forwarded to ISA).
           Set bit 7: Extended BIOS Enable (PCI master accesses to
                      FFF80000-FFFDFFFF are forwarded to ISA).
           Set bit 6: Lower BIOS Enable (PCI master, or ISA master accesses to
                      the lower 64-Kbyte BIOS block (E0000-EFFFF) at the top
                      of 1 Mbyte, or the aliases at the top of 4 Gbyte
                      (FFFE0000-FFFEFFFF) result in the generation of BIOSCS#.
           Note: Accesses to FFFF0000-FFFFFFFF are always forwarded to ISA.
           Set bit 2: BIOSCS# Write Enable (1=enable, 0=disable). */
	new = old | 0x2c4;

	if (new == old)
		return 0;

	pci_write_word(dev, xbcs, new);

	if (pci_read_word(dev, xbcs) != new) {
		printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", xbcs, new, name);
		return -1;
	}
	return 0;
}

static int enable_flash_ich(struct pci_dev *dev, char *name, int bios_cntl)
{
	/* register 4e.b gets or'ed with one */
	uint8_t old, new;

	/* if it fails, it fails. There are so many variations of broken mobos
	 * that it is hard to argue that we should quit at this point.
	 */

	/* Note: the ICH0-ICH5 BIOS_CNTL register is actually 16 bit wide, but
         * just treating it as 8 bit wide seems to work fine in practice.
	 */

	/* see ie. page 375 of "Intel ICH7 External Design Specification"
	 * http://download.intel.com/design/chipsets/datashts/30701302.pdf
	 */

	old = pci_read_byte(dev, bios_cntl);

	new = old | 1;

	if (new == old)
		return 0;

	pci_write_byte(dev, bios_cntl, new);

	if (pci_read_byte(dev, bios_cntl) != new) {
		printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
		       bios_cntl, new, name);
		return -1;
	}
	return 0;
}

static int enable_flash_ich_4e(struct pci_dev *dev, char *name)
{
	return enable_flash_ich(dev, name, 0x4e);
}

static int enable_flash_ich_dc(struct pci_dev *dev, char *name)
{
	return enable_flash_ich(dev, name, 0xdc);
}

/*
 *
 */
static int
enable_flash_vt823x(struct pci_dev *dev, char *name)
{
	uint8_t val;

        /* ROM Write enable */
	val = pci_read_byte(dev, 0x40);
	val |= 0x10;
	pci_write_byte(dev, 0x40, val);

	if (pci_read_byte(dev, 0x40) != val) {
		printf("\nWARNING: Failed to enable ROM Write on \"%s\"\n",
                       name);
		return -1;
	}

        return 0;
}

static int enable_flash_cs5530(struct pci_dev *dev, char *name)
{
	uint8_t new;

	pci_write_byte(dev, 0x52, 0xee);

	new = pci_read_byte(dev, 0x52);

	if (new != 0xee) {
		printf("tried to set register 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
		       0x52, new, name);
		return -1;
	}

	new = pci_read_byte(dev, 0x5b) | 0x20;
	pci_write_byte(dev, 0x5b, new);

	return 0;
}


static int enable_flash_sc1100(struct pci_dev *dev, char *name)
{
	uint8_t new;

	pci_write_byte(dev, 0x52, 0xee);

	new = pci_read_byte(dev, 0x52);

	if (new != 0xee) {
		printf("tried to set register 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
		       0x52, new, name);
		return -1;
	}
	return 0;
}

static int enable_flash_sis5595(struct pci_dev *dev, char *name)
{
	uint8_t new, newer;

	new = pci_read_byte(dev, 0x45);

	/* clear bit 5 */
	new &= (~0x20);
	/* set bit 2 */
	new |= 0x4;

	pci_write_byte(dev, 0x45, new);

	newer = pci_read_byte(dev, 0x45);
	if (newer != new) {
		printf("tried to set register 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
		       0x45, new, name);
		printf("Stuck at 0x%x\n", newer);
		return -1;
	}
	return 0;
}

static int enable_flash_amd8111(struct pci_dev *dev, char *name)
{
	/* register 4e.b gets or'ed with one */
	uint8_t old, new;
	/* if it fails, it fails. There are so many variations of broken mobos
	 * that it is hard to argue that we should quit at this point.
	 */

	/* enable decoding at 0xffb00000 to 0xffffffff */
	old = pci_read_byte(dev, 0x43);
	new = old | 0xC0;
	if (new != old) {
		pci_write_byte(dev, 0x43, new);
		if (pci_read_byte(dev, 0x43) != new) {
			printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
			       0x43, new, name);
		}
	}

	old = pci_read_byte(dev, 0x40);
	new = old | 0x01;
	if (new == old)
		return 0;
	pci_write_byte(dev, 0x40, new);

	if (pci_read_byte(dev, 0x40) != new) {
		printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
		       0x40, new, name);
		return -1;
	}
	return 0;
}

static int enable_flash_ck804(struct pci_dev *dev, char *name)
{
        /* register 4e.b gets or'ed with one */
        uint8_t old, new;
        /* if it fails, it fails. There are so many variations of broken mobos
         * that it is hard to argue that we should quit at this point.
         */

        /* dump_pci_device(dev); */

        old = pci_read_byte(dev, 0x88);
        new = old | 0xc0;
        if (new != old) {
                pci_write_byte(dev, 0x88, new);
                if (pci_read_byte(dev, 0x88) != new) {
                        printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
                               0x88, new, name);
                }
        }

        old = pci_read_byte(dev, 0x6d);
        new = old | 0x01;
        if (new == old)
                return 0;
        pci_write_byte(dev, 0x6d, new);

        if (pci_read_byte(dev, 0x6d) != new) {
                printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
                       0x6d, new, name);
                return -1;
        }
        return 0;
}

static int enable_flash_sb400(struct pci_dev *dev, char *name)
{
        uint8_t tmp;

	struct pci_filter f;
	struct pci_dev *smbusdev;

	/* then look for the smbus device */
	pci_filter_init((struct pci_access *) 0, &f);
	f.vendor = 0x1002;
	f.device = 0x4372;

	for (smbusdev = pacc->devices; smbusdev; smbusdev = smbusdev->next) {
		if (pci_filter_match(&f, smbusdev)) {
			break;
		}
	}

	if(!smbusdev) {
		fprintf(stderr, "ERROR: SMBus device not found. aborting\n");
		exit(1);
	}

	/* enable some smbus stuff */
	tmp=pci_read_byte(smbusdev, 0x79);
	tmp|=0x01;
	pci_write_byte(smbusdev, 0x79, tmp);

	/* change southbridge */
	tmp=pci_read_byte(dev, 0x48);
	tmp|=0x21;
	pci_write_byte(dev, 0x48, tmp);

	/* now become a bit silly. */
	tmp=inb(0xc6f);
	outb(tmp,0xeb);
	outb(tmp, 0xeb);
	tmp|=0x40;
	outb(tmp, 0xc6f);
	outb(tmp, 0xeb);
	outb(tmp, 0xeb);

	return 0;
}

static int enable_flash_mcp55(struct pci_dev *dev, char *name)
{
        /* register 4e.b gets or'ed with one */
        unsigned char old, new, byte;
        unsigned short word;

        /* if it fails, it fails. There are so many variations of broken mobos
         * that it is hard to argue that we should quit at this point.
         */

        /* dump_pci_device(dev); */

        /* Set the 4MB enable bit bit */
        byte = pci_read_byte(dev, 0x88);
        byte |= 0xff; /* 256K */
        pci_write_byte(dev, 0x88, byte);
        byte = pci_read_byte(dev, 0x8c);
        byte |= 0xff; /* 1M */
        pci_write_byte(dev, 0x8c, byte);
        word = pci_read_word(dev, 0x90);
        word |= 0x7fff; /* 15M */
        pci_write_word(dev, 0x90, word);

        old = pci_read_byte(dev, 0x6d);
        new = old | 0x01;
        if (new == old)
                return 0;
        pci_write_byte(dev, 0x6d, new);

        if (pci_read_byte(dev, 0x6d) != new) {
                printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
                       0x6d, new, name);
                return -1;
        }

	return 0;

}

typedef struct penable {
	unsigned short vendor, device;
	char *name;
	int (*doit) (struct pci_dev * dev, char *name);
} FLASH_ENABLE;

static FLASH_ENABLE enables[] = {
	{0x1039, 0x0630, "SIS630", enable_flash_sis630},
	{0x8086, 0x7110, "PIIX4/PIIX4E/PIIX4M", enable_flash_piix4},
	{0x8086, 0x2410, "ICH", enable_flash_ich_4e},
	{0x8086, 0x2420, "ICH0", enable_flash_ich_4e},
	{0x8086, 0x2440, "ICH2", enable_flash_ich_4e},
	{0x8086, 0x244c, "ICH2-M", enable_flash_ich_4e},
	{0x8086, 0x2480, "ICH3-S", enable_flash_ich_4e},
	{0x8086, 0x248c, "ICH3-M", enable_flash_ich_4e},
	{0x8086, 0x24c0, "ICH4/ICH4-L", enable_flash_ich_4e},
	{0x8086, 0x24cc, "ICH4-M", enable_flash_ich_4e},
	{0x8086, 0x24d0, "ICH5/ICH5R", enable_flash_ich_4e},
	{0x8086, 0x2640, "ICH6/ICH6R", enable_flash_ich_dc},
	{0x8086, 0x2641, "ICH6-M", enable_flash_ich_dc},
	{0x8086, 0x27b0, "ICH7DH", enable_flash_ich_dc},
	{0x8086, 0x27b8, "ICH7/ICH7R", enable_flash_ich_dc},
	{0x8086, 0x27b9, "ICH7M", enable_flash_ich_dc},
	{0x8086, 0x27bd, "ICH7MDH", enable_flash_ich_dc},
	{0x8086, 0x2810, "ICH8/ICH8R", enable_flash_ich_dc},
	{0x8086, 0x2812, "ICH8DH", enable_flash_ich_dc},
	{0x8086, 0x2814, "ICH8DO", enable_flash_ich_dc},
	{0x1106, 0x8231, "VT8231", enable_flash_vt823x},
	{0x1106, 0x3177, "VT8235", enable_flash_vt823x},
	{0x1106, 0x3227, "VT8237", enable_flash_vt823x},
	{0x1106, 0x0686, "VT82C686", enable_flash_amd8111},
	{0x1078, 0x0100, "CS5530", enable_flash_cs5530},
	{0x100b, 0x0510, "SC1100", enable_flash_sc1100},
	{0x1039, 0x0008, "SIS5595", enable_flash_sis5595},
	{0x1022, 0x7468, "AMD8111", enable_flash_amd8111},
	/* this fallthrough looks broken. */
        {0x10de, 0x0050, "NVIDIA CK804", enable_flash_ck804}, /* LPC */
        {0x10de, 0x0051, "NVIDIA CK804", enable_flash_ck804}, /* Pro */
        {0x10de, 0x00d3, "NVIDIA CK804", enable_flash_ck804}, /* Slave, should not be here, to fix known bug for A01. */

        {0x10de, 0x0260, "NVidia MCP51", enable_flash_ck804},
        {0x10de, 0x0261, "NVidia MCP51", enable_flash_ck804},
        {0x10de, 0x0262, "NVidia MCP51", enable_flash_ck804},
        {0x10de, 0x0263, "NVidia MCP51", enable_flash_ck804},

	{0x10de, 0x0360, "NVIDIA MCP55", enable_flash_mcp55}, /* Gigabyte m57sli-s4 */
	{0x10de, 0x0361, "NVIDIA MCP55", enable_flash_mcp55}, /* LPC */
	{0x10de, 0x0362, "NVIDIA MCP55", enable_flash_mcp55}, /* LPC */
	{0x10de, 0x0363, "NVIDIA MCP55", enable_flash_mcp55}, /* LPC */
        {0x10de, 0x0364, "NVIDIA MCP55", enable_flash_mcp55}, /* LPC */
	{0x10de, 0x0365, "NVIDIA MCP55", enable_flash_mcp55}, /* LPC */
	{0x10de, 0x0366, "NVIDIA MCP55", enable_flash_mcp55}, /* LPC */
	{0x10de, 0x0367, "NVIDIA MCP55", enable_flash_mcp55}, /* Pro */

	{0x1002, 0x4377, "ATI SB400", enable_flash_sb400}, /* ATI Technologies Inc IXP SB400 PCI-ISA Bridge (rev 80) */
};

/*
 *
 */
int
chipset_flash_enable(void)
{
        struct pci_dev *dev = 0;
        int ret = -2; /* nothing! */
        int i;

	/* now let's try to find the chipset we have ... */
	for (i = 0; i < sizeof(enables) / sizeof(enables[0]); i++) {
                dev = pci_dev_find(enables[i].vendor, enables[i].device);
                if (dev)
                        break;
        }

        if (dev) {
                printf("Found chipset \"%s\": Enabling flash write... ",
                       enables[i].name);

                ret = enables[i].doit(dev, enables[i].name);
                if (ret)
                        printf("Failed!\n");
                else
                        printf("OK.\n");
	}

        return ret;
}