2 * This file is part of the flashrom project.
4 * Copyright (C) 2000 Silicon Integrated System Corporation
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
25 int probe_29f002(struct flashchip *flash)
27 volatile uint8_t *bios = flash->virtual_memory;
30 chip_writeb(0xAA, bios + 0x5555);
31 chip_writeb(0x55, bios + 0x2AAA);
32 chip_writeb(0x90, bios + 0x5555);
34 id1 = chip_readb(bios);
35 id2 = chip_readb(bios + 0x01);
37 chip_writeb(0xF0, bios);
41 printf_debug("%s: id1 0x%02x, id2 0x%02x\n", __FUNCTION__, id1, id2);
42 if (id1 == flash->manufacture_id && id2 == flash->model_id)
48 int erase_29f002(struct flashchip *flash)
50 volatile uint8_t *bios = flash->virtual_memory;
52 chip_writeb(0xF0, bios + 0x555);
53 chip_writeb(0xAA, bios + 0x555);
54 chip_writeb(0x55, bios + 0x2AA);
55 chip_writeb(0x80, bios + 0x555);
56 chip_writeb(0xAA, bios + 0x555);
57 chip_writeb(0x55, bios + 0x2AA);
58 chip_writeb(0x10, bios + 0x555);
61 toggle_ready_jedec(bios);
63 // while ((*bios & 0x40) != 0x40)
67 toggle_ready_jedec(bios);
68 chip_writeb(0x30, bios + 0x0ffff);
69 chip_writeb(0x30, bios + 0x1ffff);
70 chip_writeb(0x30, bios + 0x2ffff);
71 chip_writeb(0x30, bios + 0x37fff);
72 chip_writeb(0x30, bios + 0x39fff);
73 chip_writeb(0x30, bios + 0x3bfff);
79 int write_29f002(struct flashchip *flash, uint8_t *buf)
82 int total_size = flash->total_size * 1024;
83 volatile uint8_t *bios = flash->virtual_memory;
84 volatile uint8_t *dst = bios;
86 chip_writeb(0xF0, bios);
91 printf("Programming page: ");
92 for (i = 0; i < total_size; i++) {
93 /* write to the sector */
95 printf("address: 0x%08lx", (unsigned long)i);
96 chip_writeb(0xAA, bios + 0x5555);
97 chip_writeb(0x55, bios + 0x2AAA);
98 chip_writeb(0xA0, bios + 0x5555);
99 chip_writeb(*buf++, dst++);
101 /* wait for Toggle bit ready */
102 toggle_ready_jedec(dst);
104 if ((i & 0xfff) == 0)
105 printf("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b");