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Peter Stugecce26822008-07-21 17:48:40 +00001/*
2 * This file is part of the flashrom project.
3 *
4 * Copyright (C) 2008 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 <stdio.h>
22#include "flash.h"
23
24int probe_w39v040c(struct flashchip *flash)
25{
26 volatile uint8_t *bios = flash->virtual_memory;
27 uint8_t id1, id2, lock;
28
Carl-Daniel Hailfinger0472f3d2009-03-06 22:26:00 +000029 chip_writeb(0xAA, bios + 0x5555);
Peter Stugecce26822008-07-21 17:48:40 +000030 myusec_delay(10);
Carl-Daniel Hailfinger0472f3d2009-03-06 22:26:00 +000031 chip_writeb(0x55, bios + 0x2AAA);
Peter Stugecce26822008-07-21 17:48:40 +000032 myusec_delay(10);
Carl-Daniel Hailfinger0472f3d2009-03-06 22:26:00 +000033 chip_writeb(0x90, bios + 0x5555);
Peter Stugecce26822008-07-21 17:48:40 +000034 myusec_delay(10);
35
Carl-Daniel Hailfinger0472f3d2009-03-06 22:26:00 +000036 id1 = chip_readb(bios);
37 id2 = chip_readb(bios + 1);
38 lock = chip_readb(bios + 0xfff2);
Peter Stugecce26822008-07-21 17:48:40 +000039
Carl-Daniel Hailfinger0472f3d2009-03-06 22:26:00 +000040 chip_writeb(0xAA, bios + 0x5555);
Peter Stugecce26822008-07-21 17:48:40 +000041 myusec_delay(10);
Carl-Daniel Hailfinger0472f3d2009-03-06 22:26:00 +000042 chip_writeb(0x55, bios + 0x2AAA);
Peter Stugecce26822008-07-21 17:48:40 +000043 myusec_delay(10);
Carl-Daniel Hailfinger0472f3d2009-03-06 22:26:00 +000044 chip_writeb(0xF0, bios + 0x5555);
Peter Stugecce26822008-07-21 17:48:40 +000045 myusec_delay(40);
46
Peter Stuge5cafc332009-01-25 23:52:45 +000047 printf_debug("%s: id1 0x%02x, id2 0x%02x", __func__, id1, id2);
Peter Stugecce26822008-07-21 17:48:40 +000048 if (!oddparity(id1))
49 printf_debug(", id1 parity violation");
50 printf_debug("\n");
51 if (flash->manufacture_id == id1 && flash->model_id == id2) {
52 printf("%s: Boot block #TBL is %slocked, rest of chip #WP is %slocked.\n",
53 __func__, lock & 0x4 ? "" : "un", lock & 0x8 ? "" : "un");
54 return 1;
55 }
56
57 return 0;
58}
59
60int erase_w39v040c(struct flashchip *flash)
61{
62 int i;
63 unsigned int total_size = flash->total_size * 1024;
64 volatile uint8_t *bios = flash->virtual_memory;
65
66 for (i = 0; i < total_size; i += flash->page_size)
67 erase_sector_jedec(flash->virtual_memory, i);
68
69 for (i = 0; i < total_size; i++)
Carl-Daniel Hailfinger01624f42009-05-12 15:38:55 +000070 if (0xff != chip_readb(bios + i)) {
71 printf("ERASE FAILED at 0x%08x! Expected=0xff, Read=0x%02x\n", i, chip_readb(bios + i));
Peter Stugecce26822008-07-21 17:48:40 +000072 return -1;
73 }
74
75 return 0;
76}
77
78int write_w39v040c(struct flashchip *flash, uint8_t *buf)
79{
80 int i;
81 int total_size = flash->total_size * 1024;
82 int page_size = flash->page_size;
83 volatile uint8_t *bios = flash->virtual_memory;
84
85 if (flash->erase(flash))
86 return -1;
87
88 printf("Programming page: ");
89 for (i = 0; i < total_size / page_size; i++) {
90 printf("%04d at address: 0x%08x", i, i * page_size);
91 write_sector_jedec(bios, buf + i * page_size,
92 bios + i * page_size, page_size);
93 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");
94 }
95 printf("\n");
96
97 return 0;
98}