summaryrefslogtreecommitdiffstats
path: root/m29f400bt.c
blob: e77572aeda598fe3ae0c47cd8d3177c9dc505a77 (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
/*
 * This file is part of the flashrom project.
 *
 * Copyright (C) 2000 Silicon Integrated System Corporation
 *
 * 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 "flash.h"

/* WARNING! 
   This chip uses the standard JEDEC Addresses in 16-bit mode as word
   addresses. In byte mode, 0xAAA has to be used instead of 0x555 and
   0x555 instead of 0x2AA. Do *not* blindly replace with standard JEDEC
   functions. */

void write_page_m29f400bt(chipaddr bios, uint8_t *src,
			  chipaddr dst, int page_size)
{
	int i;

	for (i = 0; i < page_size; i++) {
		chip_writeb(0xAA, bios + 0xAAA);
		chip_writeb(0x55, bios + 0x555);
		chip_writeb(0xA0, bios + 0xAAA);

		/* transfer data from source to destination */
		chip_writeb(*src, dst);
		//chip_writeb(0xF0, bios);
		//programmer_delay(5);
		toggle_ready_jedec(dst);
		printf
		    ("Value in the flash at address 0x%lx = %#x, want %#x\n",
		     (dst - bios), chip_readb(dst), *src);
		dst++;
		src++;
	}
}

int probe_m29f400bt(struct flashchip *flash)
{
	chipaddr bios = flash->virtual_memory;
	uint8_t id1, id2;

	chip_writeb(0xAA, bios + 0xAAA);
	chip_writeb(0x55, bios + 0x555);
	chip_writeb(0x90, bios + 0xAAA);

	programmer_delay(10);

	id1 = chip_readb(bios);
	/* The data sheet says id2 is at (bios + 0x01) and id2 listed in
	 * flash.h does not match. It should be possible to use JEDEC probe.
	 */
	id2 = chip_readb(bios + 0x02);

	chip_writeb(0xAA, bios + 0xAAA);
	chip_writeb(0x55, bios + 0x555);
	chip_writeb(0xF0, bios + 0xAAA);

	programmer_delay(10);

	printf_debug("%s: id1 0x%02x, id2 0x%02x\n", __func__, id1, id2);

	if (id1 == flash->manufacture_id && id2 == flash->model_id)
		return 1;

	return 0;
}

int erase_m29f400bt(struct flashchip *flash)
{
	chipaddr bios = flash->virtual_memory;

	chip_writeb(0xAA, bios + 0xAAA);
	chip_writeb(0x55, bios + 0x555);
	chip_writeb(0x80, bios + 0xAAA);

	chip_writeb(0xAA, bios + 0xAAA);
	chip_writeb(0x55, bios + 0x555);
	chip_writeb(0x10, bios + 0xAAA);

	programmer_delay(10);
	toggle_ready_jedec(bios);

	if (check_erased_range(flash, 0, flash->total_size * 1024)) {
		fprintf(stderr, "ERASE FAILED!\n");
		return -1;
	}
	return 0;
}

int block_erase_m29f400bt(struct flashchip *flash, unsigned int start, unsigned int len)
{
	chipaddr bios = flash->virtual_memory;
	chipaddr dst = bios + start;

	chip_writeb(0xAA, bios + 0xAAA);
	chip_writeb(0x55, bios + 0x555);
	chip_writeb(0x80, bios + 0xAAA);

	chip_writeb(0xAA, bios + 0xAAA);
	chip_writeb(0x55, bios + 0x555);
	//chip_writeb(0x10, bios + 0xAAA);
	chip_writeb(0x30, dst);

	programmer_delay(10);
	toggle_ready_jedec(bios);

	if (check_erased_range(flash, start, len)) {
		fprintf(stderr, "ERASE FAILED!\n");
		return -1;
	}
	return 0;
}

int block_erase_chip_m29f400bt(struct flashchip *flash, unsigned int address, unsigned int blocklen)
{
	if ((address != 0) || (blocklen != flash->total_size * 1024)) {
		fprintf(stderr, "%s called with incorrect arguments\n",
			__func__);
		return -1;
	}
	return erase_m29f400bt(flash);
}

int write_m29f400bt(struct flashchip *flash, uint8_t *buf)
{
	int i;
	int total_size = flash->total_size * 1024;
	int page_size = flash->page_size;
	chipaddr bios = flash->virtual_memory;

	//erase_m29f400bt (flash);
	printf("Programming page:\n ");
	/*********************************
	*Pages for M29F400BT:
	* 16	0x7c000		0x7ffff		TOP
	*  8 	0x7a000		0x7bfff
	*  8 	0x78000		0x79fff
	* 32	0x70000		0x77fff
	* 64	0x60000		0x6ffff
	* 64	0x50000		0x5ffff
	* 64	0x40000		0x4ffff
	*---------------------------------
	* 64	0x30000		0x3ffff
	* 64	0x20000		0x2ffff
	* 64	0x10000		0x1ffff
	* 64	0x00000		0x0ffff		BOTTOM
	*********************************/
	printf("total_size/page_size = %d\n", total_size / page_size);
	for (i = 0; i < (total_size / page_size) - 1; i++) {
		printf("%04d at address: 0x%08x\n", i, i * page_size);
		if (block_erase_m29f400bt(flash, i * page_size, page_size)) {
			fprintf(stderr, "ERASE FAILED!\n");
			return -1;
		}
		write_page_m29f400bt(bios, buf + i * page_size,
				     bios + i * page_size, page_size);
		printf("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b");
	}

	printf("%04d at address: 0x%08x\n", 7, 0x70000);
	if (block_erase_m29f400bt(flash, 0x70000, 32 * 1024)) {
		fprintf(stderr, "ERASE FAILED!\n");
		return -1;
	}
	write_page_m29f400bt(bios, buf + 0x70000, bios + 0x70000, 32 * 1024);

	printf("%04d at address: 0x%08x\n", 8, 0x78000);
	if (block_erase_m29f400bt(flash, 0x78000, 8 * 1024)) {
		fprintf(stderr, "ERASE FAILED!\n");
		return -1;
	}
	write_page_m29f400bt(bios, buf + 0x78000, bios + 0x78000, 8 * 1024);

	printf("%04d at address: 0x%08x\n", 9, 0x7a000);
	if (block_erase_m29f400bt(flash, 0x7a000, 8 * 1024)) {
		fprintf(stderr, "ERASE FAILED!\n");
		return -1;
	}
	write_page_m29f400bt(bios, buf + 0x7a000, bios + 0x7a000, 8 * 1024);

	printf("%04d at address: 0x%08x\n", 10, 0x7c000);
	if (block_erase_m29f400bt(flash, 0x7c000, 16 * 1024)) {
		fprintf(stderr, "ERASE FAILED!\n");
		return -1;
	}
	write_page_m29f400bt(bios, buf + 0x7c000, bios + 0x7c000, 16 * 1024);

	printf("\n");

	return 0;
}

int write_coreboot_m29f400bt(struct flashchip *flash, uint8_t *buf)
{
	chipaddr bios = flash->virtual_memory;

	printf("Programming page:\n ");
	/*********************************
	*Pages for M29F400BT:
	* 16	0x7c000		0x7ffff		TOP
	*  8 	0x7a000		0x7bfff
	*  8 	0x78000		0x79fff
	* 32	0x70000		0x77fff
	* 64	0x60000		0x6ffff
	* 64	0x50000		0x5ffff
	* 64	0x40000		0x4ffff
	*---------------------------------
	* 64	0x30000		0x3ffff
	* 64	0x20000		0x2ffff
	* 64	0x10000		0x1ffff
	* 64	0x00000		0x0ffff		BOTTOM
	*********************************/
	printf("%04d at address: 0x%08x\n", 7, 0x00000);
	if (block_erase_m29f400bt(flash, 0x00000, 64 * 1024)) {
		fprintf(stderr, "ERASE FAILED!\n");
		return -1;
	}
	write_page_m29f400bt(bios, buf + 0x00000, bios + 0x00000, 64 * 1024);

	printf("%04d at address: 0x%08x\n", 7, 0x10000);
	if (block_erase_m29f400bt(flash, 0x10000, 64 * 1024)) {
		fprintf(stderr, "ERASE FAILED!\n");
		return -1;
	}
	write_page_m29f400bt(bios, buf + 0x10000, bios + 0x10000, 64 * 1024);

	printf("%04d at address: 0x%08x\n", 7, 0x20000);
	if (block_erase_m29f400bt(flash, 0x20000, 64 * 1024)) {
		fprintf(stderr, "ERASE FAILED!\n");
		return -1;
	}
	write_page_m29f400bt(bios, buf + 0x20000, bios + 0x20000, 64 * 1024);

	printf("%04d at address: 0x%08x\n", 7, 0x30000);
	if (block_erase_m29f400bt(flash, 0x30000, 64 * 1024)) {
		fprintf(stderr, "ERASE FAILED!\n");
		return -1;
	}
	write_page_m29f400bt(bios, buf + 0x30000, bios + 0x30000, 64 * 1024);

	printf("\n");

	return 0;
}