Gitiles
Code Review Sign In
review.sourcearcade.org / flashprog / f6c1cb1a856e67b8cf7eaf7a90b09bc3923a3718 / . / sst28sf040.c
blob: 3da25f127f10df3de1e352810e93c68b827d1650 [file] [log] [blame]
Ronald G. Minnich5e5f75e2002-01-29 18:21:41 +0000[diff] [blame]1/*
Uwe Hermannd1107642007-08-29 17:52:32 +0000[diff] [blame]2 * This file is part of the flashrom project.
Ronald G. Minnich5e5f75e2002-01-29 18:21:41 +0000[diff] [blame]3 *
Uwe Hermannd22a1d42007-09-09 20:21:05 +0000[diff] [blame]4 * Copyright (C) 2000 Silicon Integrated System Corporation
5 * Copyright (C) 2005 coresystems GmbH <stepan@openbios.org>
Sean Nelson51c83fb2010-01-20 20:55:53 +0000[diff] [blame]6 * Copyright (C) 2009 Sean Nelson <audiohacked@gmail.com>
Ronald G. Minnich5e5f75e2002-01-29 18:21:41 +0000[diff] [blame]7 *
Uwe Hermannd1107642007-08-29 17:52:32 +0000[diff] [blame]8 * 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.
Ronald G. Minnich5e5f75e2002-01-29 18:21:41 +0000[diff] [blame]12 *
Uwe Hermannd1107642007-08-29 17:52:32 +0000[diff] [blame]13 * 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.
Ronald G. Minnich5e5f75e2002-01-29 18:21:41 +0000[diff] [blame]17 */
18
19#include "flash.h"
Sean Nelson14ba6682010-02-26 05:48:29 +0000[diff] [blame]20#include "chipdrivers.h"
Ronald G. Minnich5e5f75e2002-01-29 18:21:41 +0000[diff] [blame]21
22#define AUTO_PG_ERASE1 0x20
23#define AUTO_PG_ERASE2 0xD0
Ollie Lhocf29de82004-03-18 19:40:07 +0000[diff] [blame]24#define AUTO_PGRM 0x10
Ronald G. Minnich5e5f75e2002-01-29 18:21:41 +0000[diff] [blame]25#define CHIP_ERASE 0x30
26#define RESET 0xFF
27#define READ_ID 0x90
28
Carl-Daniel Hailfinger63fd9022011-12-14 22:25:15 +0000[diff] [blame]29int protect_28sf040(struct flashctx *flash)
Ronald G. Minnich5e5f75e2002-01-29 18:21:41 +0000[diff] [blame]30{
Carl-Daniel Hailfingerb30a5ed2010-10-10 14:02:27 +0000[diff] [blame]31 chipaddr bios = flash->virtual_memory;
32
Carl-Daniel Hailfinger8a3c60c2011-12-18 15:01:24 +0000[diff] [blame]33 chip_readb(flash, bios + 0x1823);
34 chip_readb(flash, bios + 0x1820);
35 chip_readb(flash, bios + 0x1822);
36 chip_readb(flash, bios + 0x0418);
37 chip_readb(flash, bios + 0x041B);
38 chip_readb(flash, bios + 0x0419);
39 chip_readb(flash, bios + 0x040A);
Carl-Daniel Hailfinger79e67572010-10-13 21:49:30 +0000[diff] [blame]40
41 return 0;
Ronald G. Minnich5e5f75e2002-01-29 18:21:41 +0000[diff] [blame]42}
43
Carl-Daniel Hailfinger63fd9022011-12-14 22:25:15 +0000[diff] [blame]44int unprotect_28sf040(struct flashctx *flash)
Ronald G. Minnich5e5f75e2002-01-29 18:21:41 +0000[diff] [blame]45{
Carl-Daniel Hailfingerb30a5ed2010-10-10 14:02:27 +0000[diff] [blame]46 chipaddr bios = flash->virtual_memory;
47
Carl-Daniel Hailfinger8a3c60c2011-12-18 15:01:24 +0000[diff] [blame]48 chip_readb(flash, bios + 0x1823);
49 chip_readb(flash, bios + 0x1820);
50 chip_readb(flash, bios + 0x1822);
51 chip_readb(flash, bios + 0x0418);
52 chip_readb(flash, bios + 0x041B);
53 chip_readb(flash, bios + 0x0419);
54 chip_readb(flash, bios + 0x041A);
Carl-Daniel Hailfinger79e67572010-10-13 21:49:30 +0000[diff] [blame]55
56 return 0;
Ronald G. Minnich5e5f75e2002-01-29 18:21:41 +0000[diff] [blame]57}
58
Carl-Daniel Hailfinger8a3c60c2011-12-18 15:01:24 +0000[diff] [blame]59int erase_sector_28sf040(struct flashctx *flash, unsigned int address,
60 unsigned int sector_size)
Ronald G. Minnich5e5f75e2002-01-29 18:21:41 +0000[diff] [blame]61{
Carl-Daniel Hailfinger30f7cb22009-06-15 17:23:36 +0000[diff] [blame]62 chipaddr bios = flash->virtual_memory;
63
Carl-Daniel Hailfinger79e67572010-10-13 21:49:30 +0000[diff] [blame]64 /* This command sequence is very similar to erase_block_82802ab. */
Carl-Daniel Hailfinger8a3c60c2011-12-18 15:01:24 +0000[diff] [blame]65 chip_writeb(flash, AUTO_PG_ERASE1, bios);
66 chip_writeb(flash, AUTO_PG_ERASE2, bios + address);
Ronald G. Minnich5e5f75e2002-01-29 18:21:41 +0000[diff] [blame]67
Carl-Daniel Hailfingerb30a5ed2010-10-10 14:02:27 +0000[diff] [blame]68 /* wait for Toggle bit ready */
Carl-Daniel Hailfinger8a3c60c2011-12-18 15:01:24 +0000[diff] [blame]69 toggle_ready_jedec(flash, bios);
Ronald G. Minnicheaab50b2003-09-12 22:41:53 +0000[diff] [blame]70
Carl-Daniel Hailfingerb4061f62011-06-26 17:04:16 +0000[diff] [blame]71 /* FIXME: Check the status register for errors. */
Uwe Hermannffec5f32007-08-23 16:08:21 +0000[diff] [blame]72 return 0;
Ronald G. Minnich5e5f75e2002-01-29 18:21:41 +0000[diff] [blame]73}
74
Carl-Daniel Hailfinger75a58f92010-10-13 22:26:56 +0000[diff] [blame]75/* chunksize is 1 */
Mark Marshallf20b7be2014-05-09 21:16:21 +0000[diff] [blame]76int write_28sf040(struct flashctx *flash, const uint8_t *src, unsigned int start, unsigned int len)
Ronald G. Minnich5e5f75e2002-01-29 18:21:41 +0000[diff] [blame]77{
Nico Huber519be662018-12-23 20:03:35 +0100[diff] [blame]78 unsigned int i;
Carl-Daniel Hailfingerb30a5ed2010-10-10 14:02:27 +0000[diff] [blame]79 chipaddr bios = flash->virtual_memory;
80 chipaddr dst = flash->virtual_memory + start;
Ronald G. Minnich5e5f75e2002-01-29 18:21:41 +0000[diff] [blame]81
Carl-Daniel Hailfingerb30a5ed2010-10-10 14:02:27 +0000[diff] [blame]82 for (i = 0; i < len; i++) {
Ronald G. Minnich5e5f75e2002-01-29 18:21:41 +0000[diff] [blame]83 /* transfer data from source to destination */
84 if (*src == 0xFF) {
85 dst++, src++;
86 /* If the data is 0xFF, don't program it */
87 continue;
88 }
89 /*issue AUTO PROGRAM command */
Carl-Daniel Hailfinger8a3c60c2011-12-18 15:01:24 +0000[diff] [blame]90 chip_writeb(flash, AUTO_PGRM, dst);
91 chip_writeb(flash, *src++, dst++);
Ronald G. Minnich5e5f75e2002-01-29 18:21:41 +0000[diff] [blame]92
93 /* wait for Toggle bit ready */
Carl-Daniel Hailfinger8a3c60c2011-12-18 15:01:24 +0000[diff] [blame]94 toggle_ready_jedec(flash, bios);
Ronald G. Minnich5e5f75e2002-01-29 18:21:41 +0000[diff] [blame]95 }
Ronald G. Minnicheaab50b2003-09-12 22:41:53 +0000[diff] [blame]96
Uwe Hermannffec5f32007-08-23 16:08:21 +0000[diff] [blame]97 return 0;
Ronald G. Minnich5e5f75e2002-01-29 18:21:41 +0000[diff] [blame]98}
99
Carl-Daniel Hailfinger63fd9022011-12-14 22:25:15 +0000[diff] [blame]100static int erase_28sf040(struct flashctx *flash)
Ronald G. Minnich5e5f75e2002-01-29 18:21:41 +0000[diff] [blame]101{
Carl-Daniel Hailfinger5820f422009-05-16 21:22:56 +0000[diff] [blame]102 chipaddr bios = flash->virtual_memory;
Ronald G. Minnich5e5f75e2002-01-29 18:21:41 +0000[diff] [blame]103
Carl-Daniel Hailfinger8a3c60c2011-12-18 15:01:24 +0000[diff] [blame]104 chip_writeb(flash, CHIP_ERASE, bios);
105 chip_writeb(flash, CHIP_ERASE, bios);
Ronald G. Minnich5e5f75e2002-01-29 18:21:41 +0000[diff] [blame]106
Carl-Daniel Hailfingerca8bfc62009-06-05 17:48:08 +0000[diff] [blame]107 programmer_delay(10);
Carl-Daniel Hailfinger8a3c60c2011-12-18 15:01:24 +0000[diff] [blame]108 toggle_ready_jedec(flash, bios);
Ronald G. Minnicheaab50b2003-09-12 22:41:53 +0000[diff] [blame]109
Carl-Daniel Hailfingerb4061f62011-06-26 17:04:16 +0000[diff] [blame]110 /* FIXME: Check the status register for errors. */
Uwe Hermannffec5f32007-08-23 16:08:21 +0000[diff] [blame]111 return 0;
Ronald G. Minnich5e5f75e2002-01-29 18:21:41 +0000[diff] [blame]112}
113
Carl-Daniel Hailfinger8a3c60c2011-12-18 15:01:24 +0000[diff] [blame]114int erase_chip_28sf040(struct flashctx *flash, unsigned int addr,
115 unsigned int blocklen)
Sean Nelson51c83fb2010-01-20 20:55:53 +0000[diff] [blame]116{
Carl-Daniel Hailfinger5a7cb842012-08-25 01:17:58 +0000[diff] [blame]117 if ((addr != 0) || (blocklen != flash->chip->total_size * 1024)) {
Sean Nelsoned479d22010-03-24 23:14:32 +0000[diff] [blame]118 msg_cerr("%s called with incorrect arguments\n",
Sean Nelson51c83fb2010-01-20 20:55:53 +0000[diff] [blame]119 __func__);
120 return -1;
121 }
122 return erase_28sf040(flash);
123}