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Yinghai Luca782972007-01-22 20:21:17 +00001/*
Uwe Hermannd1107642007-08-29 17:52:32 +00002 * This file is part of the flashrom project.
Yinghai Luca782972007-01-22 20:21:17 +00003 *
Uwe Hermannd22a1d42007-09-09 20:21:05 +00004 * Copyright (C) 2000 Silicon Integrated System Corporation
5 * Copyright (C) 2005-2007 coresystems GmbH
Sean Nelson51c83fb2010-01-20 20:55:53 +00006 * Copyright (C) 2009 Sean Nelson <audiohacked@gmail.com>
Yinghai Luca782972007-01-22 20:21:17 +00007 *
Uwe Hermannd1107642007-08-29 17:52:32 +00008 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
Yinghai Luca782972007-01-22 20:21:17 +000012 *
Uwe Hermannd1107642007-08-29 17:52:32 +000013 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
Yinghai Luca782972007-01-22 20:21:17 +000017 *
Uwe Hermannd1107642007-08-29 17:52:32 +000018 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Yinghai Luca782972007-01-22 20:21:17 +000021 */
22
Yinghai Luca782972007-01-22 20:21:17 +000023#include "flash.h"
Sean Nelson14ba6682010-02-26 05:48:29 +000024#include "chipdrivers.h"
Yinghai Luca782972007-01-22 20:21:17 +000025
Carl-Daniel Hailfingerad3cc552010-07-03 11:02:10 +000026static int write_lockbits_block_49lfxxxc(struct flashchip *flash, unsigned long address, unsigned char bits)
Sean Nelson51c83fb2010-01-20 20:55:53 +000027{
28 unsigned long lock = flash->virtual_registers + address + 2;
Sean Nelsoned479d22010-03-24 23:14:32 +000029 msg_cdbg("lockbits at address=0x%08lx is 0x%01x\n", lock, chip_readb(lock));
Sean Nelson51c83fb2010-01-20 20:55:53 +000030 chip_writeb(bits, lock);
31
32 return 0;
33}
34
Carl-Daniel Hailfinger500dd9d2009-06-05 13:30:49 +000035static int write_lockbits_49lfxxxc(struct flashchip *flash, unsigned char bits)
Yinghai Luca782972007-01-22 20:21:17 +000036{
Carl-Daniel Hailfinger500dd9d2009-06-05 13:30:49 +000037 chipaddr registers = flash->virtual_registers;
38 int i, left = flash->total_size * 1024;
Yinghai Luca782972007-01-22 20:21:17 +000039 unsigned long address;
40
Sean Nelsoned479d22010-03-24 23:14:32 +000041 msg_cdbg("\nbios=0x%08lx\n", registers);
Yinghai Luca782972007-01-22 20:21:17 +000042 for (i = 0; left > 65536; i++, left -= 65536) {
Carl-Daniel Hailfingerad3cc552010-07-03 11:02:10 +000043 write_lockbits_block_49lfxxxc(flash, i * 65536, bits);
Yinghai Luca782972007-01-22 20:21:17 +000044 }
45 address = i * 65536;
Carl-Daniel Hailfingerad3cc552010-07-03 11:02:10 +000046 write_lockbits_block_49lfxxxc(flash, address, bits);
Yinghai Luca782972007-01-22 20:21:17 +000047 address += 32768;
Carl-Daniel Hailfingerad3cc552010-07-03 11:02:10 +000048 write_lockbits_block_49lfxxxc(flash, address, bits);
Yinghai Luca782972007-01-22 20:21:17 +000049 address += 8192;
Carl-Daniel Hailfingerad3cc552010-07-03 11:02:10 +000050 write_lockbits_block_49lfxxxc(flash, address, bits);
Yinghai Luca782972007-01-22 20:21:17 +000051 address += 8192;
Carl-Daniel Hailfingerad3cc552010-07-03 11:02:10 +000052 write_lockbits_block_49lfxxxc(flash, address, bits);
Yinghai Luca782972007-01-22 20:21:17 +000053
Uwe Hermannffec5f32007-08-23 16:08:21 +000054 return 0;
Yinghai Luca782972007-01-22 20:21:17 +000055}
56
Sean Nelson6e0b9122010-02-19 00:52:10 +000057int unlock_49lfxxxc(struct flashchip *flash)
58{
59 return write_lockbits_49lfxxxc(flash, 0);
60}
61
Sean Nelson51c83fb2010-01-20 20:55:53 +000062int erase_sector_49lfxxxc(struct flashchip *flash, unsigned int address, unsigned int sector_size)
Yinghai Luca782972007-01-22 20:21:17 +000063{
Sean Nelson69e58112010-03-23 17:10:28 +000064 uint8_t status;
Carl-Daniel Hailfinger30f7cb22009-06-15 17:23:36 +000065 chipaddr bios = flash->virtual_memory;
Yinghai Luca782972007-01-22 20:21:17 +000066
Sean Nelson69e58112010-03-23 17:10:28 +000067 chip_writeb(0x30, bios);
68 chip_writeb(0xD0, bios + address);
Yinghai Luca782972007-01-22 20:21:17 +000069
Carl-Daniel Hailfingerb30a5ed2010-10-10 14:02:27 +000070 status = wait_82802ab(flash);
Yinghai Luca782972007-01-22 20:21:17 +000071
Carl-Daniel Hailfinger30f7cb22009-06-15 17:23:36 +000072 if (check_erased_range(flash, address, sector_size)) {
Sean Nelsoned479d22010-03-24 23:14:32 +000073 msg_cerr("ERASE FAILED!\n");
Carl-Daniel Hailfinger30f7cb22009-06-15 17:23:36 +000074 return -1;
75 }
Uwe Hermannffec5f32007-08-23 16:08:21 +000076 return 0;
Yinghai Luca782972007-01-22 20:21:17 +000077}
78
Yinghai Luca782972007-01-22 20:21:17 +000079int write_49lfxxxc(struct flashchip *flash, uint8_t *buf)
80{
81 int i;
Uwe Hermanna7e05482007-05-09 10:17:44 +000082 int total_size = flash->total_size * 1024;
83 int page_size = flash->page_size;
Carl-Daniel Hailfinger5820f422009-05-16 21:22:56 +000084 chipaddr bios = flash->virtual_memory;
Yinghai Luca782972007-01-22 20:21:17 +000085
Carl-Daniel Hailfinger500dd9d2009-06-05 13:30:49 +000086 write_lockbits_49lfxxxc(flash, 0);
Yinghai Luca782972007-01-22 20:21:17 +000087 for (i = 0; i < total_size / page_size; i++) {
Carl-Daniel Hailfingerb30a5ed2010-10-10 14:02:27 +000088 write_page_82802ab(flash, buf + i * page_size, i * page_size, page_size);
Yinghai Luca782972007-01-22 20:21:17 +000089 }
Yinghai Luca782972007-01-22 20:21:17 +000090
Sean Nelson69e58112010-03-23 17:10:28 +000091 chip_writeb(0xFF, bios);
Uwe Hermannffec5f32007-08-23 16:08:21 +000092
93 return 0;
Yinghai Luca782972007-01-22 20:21:17 +000094}