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Peter Stugeaf8ffac2009-01-26 06:42:02 +00001/*
Uwe Hermann7b2969b2009-04-15 10:52:49 +00002 * This file is part of the flashrom project.
Peter Stugeaf8ffac2009-01-26 06:42:02 +00003 *
4 * Copyright (C) 2009 Peter Stuge <peter@stuge.se>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21#include "flash.h"
22
Uwe Hermann7b2969b2009-04-15 10:52:49 +000023int erase_m29f002(struct flashchip *flash)
24{
Carl-Daniel Hailfinger5820f422009-05-16 21:22:56 +000025 chipaddr bios = flash->virtual_memory;
Carl-Daniel Hailfinger0472f3d2009-03-06 22:26:00 +000026 chip_writeb(0xaa, bios + 0x555);
27 chip_writeb(0x55, bios + 0xaaa);
28 chip_writeb(0x80, bios + 0x555);
29 chip_writeb(0xaa, bios + 0x555);
30 chip_writeb(0x55, bios + 0xaaa);
31 chip_writeb(0x10, bios + 0x555);
Peter Stugeaf8ffac2009-01-26 06:42:02 +000032 myusec_delay(10);
33 toggle_ready_jedec(bios);
34 return 0;
35}
36
Carl-Daniel Hailfinger5820f422009-05-16 21:22:56 +000037static void rewrite_block(chipaddr bios, uint8_t *src,
38 chipaddr dst, int size)
Uwe Hermann7b2969b2009-04-15 10:52:49 +000039{
Peter Stugeaf8ffac2009-01-26 06:42:02 +000040 /* erase */
Carl-Daniel Hailfinger0472f3d2009-03-06 22:26:00 +000041 chip_writeb(0xaa, bios + 0x555);
42 chip_writeb(0x55, bios + 0xaaa);
43 chip_writeb(0x80, bios + 0x555);
44 chip_writeb(0xaa, bios + 0x555);
45 chip_writeb(0x55, bios + 0xaaa);
46 chip_writeb(0x30, dst);
Peter Stugeaf8ffac2009-01-26 06:42:02 +000047 myusec_delay(10);
48 toggle_ready_jedec(bios);
49
50 /* program */
51 while (size--) {
Carl-Daniel Hailfinger0472f3d2009-03-06 22:26:00 +000052 chip_writeb(0xaa, bios + 0x555);
53 chip_writeb(0x55, bios + 0xaaa);
54 chip_writeb(0xa0, bios + 0x555);
55 chip_writeb(*src, dst);
Peter Stugeaf8ffac2009-01-26 06:42:02 +000056 toggle_ready_jedec(dst);
57 dst++;
58 src++;
59 }
60}
61
Carl-Daniel Hailfinger5820f422009-05-16 21:22:56 +000062static void do_block(chipaddr bios, uint8_t *src, int i,
Uwe Hermann7b2969b2009-04-15 10:52:49 +000063 unsigned long start, int size)
64{
Peter Stugeaf8ffac2009-01-26 06:42:02 +000065 printf("%d at address: 0x%08lx", i, start);
66 rewrite_block(bios, src + start, bios + start, size);
67 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");
68}
69
Uwe Hermann7b2969b2009-04-15 10:52:49 +000070int write_m29f002t(struct flashchip *flash, uint8_t *buf)
71{
Peter Stugeaf8ffac2009-01-26 06:42:02 +000072 int i, page_size = flash->page_size;
Carl-Daniel Hailfinger5820f422009-05-16 21:22:56 +000073 chipaddr bios = flash->virtual_memory;
Peter Stugeaf8ffac2009-01-26 06:42:02 +000074
75 /* M29F002(N)T has 7 blocks. From bottom to top their sizes are:
76 * 64k 64k 64k 32k 8k 8k 16k
77 * flash->page_size is set to 64k in flashchips.c
78 */
79
80 printf("Programming block: ");
81 for (i = 0; i < 3; i++)
Uwe Hermann7b2969b2009-04-15 10:52:49 +000082 do_block(bios, buf, i, i * page_size, page_size);
83 do_block(bios, buf, i++, 0x30000, 32 * 1024);
84 do_block(bios, buf, i++, 0x38000, 8 * 1024);
85 do_block(bios, buf, i++, 0x3a000, 8 * 1024);
86 do_block(bios, buf, i, 0x3c000, 16 * 1024);
Peter Stugeaf8ffac2009-01-26 06:42:02 +000087
88 printf("\n");
89 return 0;
90}
91
Uwe Hermann7b2969b2009-04-15 10:52:49 +000092int write_m29f002b(struct flashchip *flash, uint8_t *buf)
93{
Peter Stugeaf8ffac2009-01-26 06:42:02 +000094 int i = 0, page_size = flash->page_size;
Carl-Daniel Hailfinger5820f422009-05-16 21:22:56 +000095 chipaddr bios = flash->virtual_memory;
Peter Stugeaf8ffac2009-01-26 06:42:02 +000096
97 /* M29F002B has 7 blocks. From bottom to top their sizes are:
98 * 16k 8k 8k 32k 64k 64k 64k
99 * flash->page_size is set to 64k in flashchips.c
100 */
101
102 printf("Programming block: ");
Uwe Hermann7b2969b2009-04-15 10:52:49 +0000103 do_block(bios, buf, i++, 0x00000, 16 * 1024);
104 do_block(bios, buf, i++, 0x04000, 8 * 1024);
105 do_block(bios, buf, i++, 0x06000, 8 * 1024);
106 do_block(bios, buf, i++, 0x08000, 32 * 1024);
Peter Stugeaf8ffac2009-01-26 06:42:02 +0000107 for (; i < 7; i++)
Uwe Hermann7b2969b2009-04-15 10:52:49 +0000108 do_block(bios, buf, i, (i - 3) * page_size, page_size);
Peter Stugeaf8ffac2009-01-26 06:42:02 +0000109
110 printf("\n");
111 return 0;
112}