2 * This file is part of the flashrom project.
4 * Copyright (C) 2008 Peter Stuge <peter@stuge.se>
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.
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.
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
24 int probe_w39v040c(struct flashchip *flash)
26 volatile uint8_t *bios = flash->virtual_memory;
27 uint8_t id1, id2, lock;
29 *(volatile uint8_t *)(bios + 0x5555) = 0xAA;
31 *(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
33 *(volatile uint8_t *)(bios + 0x5555) = 0x90;
36 id1 = *(volatile uint8_t *)bios;
37 id2 = *(volatile uint8_t *)(bios + 1);
38 lock = *(volatile uint8_t *)(bios + 0xfff2);
40 *(volatile uint8_t *)(bios + 0x5555) = 0xAA;
42 *(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
44 *(volatile uint8_t *)(bios + 0x5555) = 0xF0;
47 printf_debug("%s: id1 0x%x, id2 0x%x", __func__, id1, id2);
49 printf_debug(", id1 parity violation");
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");
60 int erase_w39v040c(struct flashchip *flash)
63 unsigned int total_size = flash->total_size * 1024;
64 volatile uint8_t *bios = flash->virtual_memory;
66 for (i = 0; i < total_size; i += flash->page_size)
67 erase_sector_jedec(flash->virtual_memory, i);
69 for (i = 0; i < total_size; i++)
70 if (0xff != bios[i]) {
71 printf("ERASE FAILED at 0x%08x! Expected=0xff, Read=0x%02x\n", i, bios[i]);
78 int write_w39v040c(struct flashchip *flash, uint8_t *buf)
81 int total_size = flash->total_size * 1024;
82 int page_size = flash->page_size;
83 volatile uint8_t *bios = flash->virtual_memory;
85 if (flash->erase(flash))
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");