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Ronald G. Minnich5b582f22006-02-23 17:16:44 +00001/*
Ronald G. Minnich5eaed682006-03-14 19:58:14 +00002 * lhf00l04.c: driver for programming JEDEC standard flash parts
Ronald G. Minnich5b582f22006-02-23 17:16:44 +00003 *
4 *
5 * Copyright 2000 Silicon Integrated System Corporation
Ronald G. Minnich5b582f22006-02-23 17:16:44 +00006 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 *
21 *
Ronald G. Minnich5eaed682006-03-14 19:58:14 +000022 * Reference: http://www.intel.com/design/chipsets/datashts/290658.htm
Ronald G. Minnich5b582f22006-02-23 17:16:44 +000023 */
24
25#include <stdio.h>
Ronald G. Minnich5eaed682006-03-14 19:58:14 +000026#include <stdlib.h>
Ronald G. Minnich5b582f22006-02-23 17:16:44 +000027#include "flash.h"
Ronald G. Minnich5b582f22006-02-23 17:16:44 +000028
Ronald G. Minnich5eaed682006-03-14 19:58:14 +000029// I need that Berkeley bit-map printer
30void print_lhf00l04_status(uint8_t status)
Ronald G. Minnich5b582f22006-02-23 17:16:44 +000031{
Ronald G. Minnich5eaed682006-03-14 19:58:14 +000032 printf("%s", status & 0x80 ? "Ready:" : "Busy:");
33 printf("%s", status & 0x40 ? "BE SUSPEND:" : "BE RUN/FINISH:");
34 printf("%s", status & 0x20 ? "BE ERROR:" : "BE OK:");
35 printf("%s", status & 0x10 ? "PROG ERR:" : "PROG OK:");
36 printf("%s", status & 0x8 ? "VP ERR:" : "VPP OK:");
37 printf("%s", status & 0x4 ? "PROG SUSPEND:" : "PROG RUN/FINISH:");
38 printf("%s", status & 0x2 ? "WP|TBL#|WP#,ABORT:" : "UNLOCK:");
Ronald G. Minnich5b582f22006-02-23 17:16:44 +000039}
40
41int probe_lhf00l04(struct flashchip *flash)
42{
Stefan Reinauerce532972007-05-23 17:20:56 +000043 volatile uint8_t *bios = flash->virtual_memory;
Ronald G. Minnich5eaed682006-03-14 19:58:14 +000044 uint8_t id1, id2;
Ronald G. Minnich5b582f22006-02-23 17:16:44 +000045
Ronald G. Minnich5eaed682006-03-14 19:58:14 +000046#if 0
Stefan Reinauerce532972007-05-23 17:20:56 +000047 /* Enter ID mode */
Uwe Hermanna7e05482007-05-09 10:17:44 +000048 *(volatile uint8_t *)(bios + 0x5555) = 0xAA;
49 *(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
50 *(volatile uint8_t *)(bios + 0x5555) = 0x90;
Ronald G. Minnich5eaed682006-03-14 19:58:14 +000051#endif
Ronald G. Minnich5b582f22006-02-23 17:16:44 +000052
Ronald G. Minnich5eaed682006-03-14 19:58:14 +000053 *bios = 0xff;
54 myusec_delay(10);
55 *bios = 0x90;
Ronald G. Minnich5b582f22006-02-23 17:16:44 +000056 myusec_delay(10);
57
Uwe Hermanna7e05482007-05-09 10:17:44 +000058 id1 = *(volatile uint8_t *)bios;
59 id2 = *(volatile uint8_t *)(bios + 0x01);
Ronald G. Minnich5b582f22006-02-23 17:16:44 +000060
Stefan Reinauerce532972007-05-23 17:20:56 +000061 /* Leave ID mode */
Uwe Hermanna7e05482007-05-09 10:17:44 +000062 *(volatile uint8_t *)(bios + 0x5555) = 0xAA;
63 *(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
64 *(volatile uint8_t *)(bios + 0x5555) = 0xF0;
Ronald G. Minnich5eaed682006-03-14 19:58:14 +000065
Ronald G. Minnich5b582f22006-02-23 17:16:44 +000066 myusec_delay(10);
67
68 printf_debug("%s: id1 0x%x, id2 0x%x\n", __FUNCTION__, id1, id2);
Ronald G. Minnich5b582f22006-02-23 17:16:44 +000069
Uwe Hermanna8808852007-05-24 19:17:29 +000070 if (id1 != flash->manufacture_id || id2 != flash->model_id)
Stefan Reinauerff4f1972007-05-24 08:48:10 +000071 return 0;
Ronald G. Minnich5eaed682006-03-14 19:58:14 +000072
Stefan Reinauerff4f1972007-05-24 08:48:10 +000073 map_flash_registers(flash);
Ronald G. Minnich5eaed682006-03-14 19:58:14 +000074
Stefan Reinauerff4f1972007-05-24 08:48:10 +000075 return 1;
Ronald G. Minnich5b582f22006-02-23 17:16:44 +000076}
77
Ronald G. Minnich5eaed682006-03-14 19:58:14 +000078uint8_t wait_lhf00l04(volatile uint8_t *bios)
79{
Ronald G. Minnich5eaed682006-03-14 19:58:14 +000080 uint8_t status;
81 uint8_t id1, id2;
82
83 *bios = 0x70;
84 if ((*bios & 0x80) == 0) { // it's busy
Uwe Hermanna7e05482007-05-09 10:17:44 +000085 while ((*bios & 0x80) == 0) ;
Ronald G. Minnich5eaed682006-03-14 19:58:14 +000086 }
87
88 status = *bios;
89
90 // put another command to get out of status register mode
91
92 *bios = 0x90;
93 myusec_delay(10);
94
Uwe Hermanna7e05482007-05-09 10:17:44 +000095 id1 = *(volatile uint8_t *)bios;
96 id2 = *(volatile uint8_t *)(bios + 0x01);
Ronald G. Minnich5eaed682006-03-14 19:58:14 +000097
98 // this is needed to jam it out of "read id" mode
Uwe Hermanna7e05482007-05-09 10:17:44 +000099 *(volatile uint8_t *)(bios + 0x5555) = 0xAA;
100 *(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
101 *(volatile uint8_t *)(bios + 0x5555) = 0xF0;
Ronald G. Minnich5eaed682006-03-14 19:58:14 +0000102
Uwe Hermannffec5f32007-08-23 16:08:21 +0000103 return status;
Ronald G. Minnich5eaed682006-03-14 19:58:14 +0000104}
Uwe Hermannffec5f32007-08-23 16:08:21 +0000105
Ronald G. Minnich5eaed682006-03-14 19:58:14 +0000106int erase_lhf00l04_block(struct flashchip *flash, int offset)
107{
Stefan Reinauerce532972007-05-23 17:20:56 +0000108 volatile uint8_t *bios = flash->virtual_memory + offset;
109 volatile uint8_t *wrprotect = flash->virtual_registers + offset + 2;
Ronald G. Minnich5eaed682006-03-14 19:58:14 +0000110 uint8_t status;
111
112 // clear status register
113 *bios = 0x50;
114 printf("Erase at %p\n", bios);
Stefan Reinauerce532972007-05-23 17:20:56 +0000115 status = wait_lhf00l04(flash->virtual_memory);
Ronald G. Minnich5eaed682006-03-14 19:58:14 +0000116 print_lhf00l04_status(status);
117 // clear write protect
118 printf("write protect is at %p\n", (wrprotect));
119 printf("write protect is 0x%x\n", *(wrprotect));
120 *(wrprotect) = 0;
121 printf("write protect is 0x%x\n", *(wrprotect));
122
123 // now start it
Uwe Hermanna7e05482007-05-09 10:17:44 +0000124 *(volatile uint8_t *)(bios) = 0x20;
125 *(volatile uint8_t *)(bios) = 0xd0;
Ronald G. Minnich5eaed682006-03-14 19:58:14 +0000126 myusec_delay(10);
127 // now let's see what the register is
Stefan Reinauerce532972007-05-23 17:20:56 +0000128 status = wait_lhf00l04(flash->virtual_memory);
Ronald G. Minnich5eaed682006-03-14 19:58:14 +0000129 print_lhf00l04_status(status);
130 printf("DONE BLOCK 0x%x\n", offset);
Uwe Hermannffec5f32007-08-23 16:08:21 +0000131
132 return 0;
Ronald G. Minnich5eaed682006-03-14 19:58:14 +0000133}
Uwe Hermannffec5f32007-08-23 16:08:21 +0000134
Ronald G. Minnich5b582f22006-02-23 17:16:44 +0000135int erase_lhf00l04(struct flashchip *flash)
136{
Ronald G. Minnich5eaed682006-03-14 19:58:14 +0000137 int i;
138 unsigned int total_size = flash->total_size * 1024;
Ronald G. Minnich5b582f22006-02-23 17:16:44 +0000139
Ronald G. Minnich5eaed682006-03-14 19:58:14 +0000140 printf("total_size is %d; flash->page_size is %d\n",
141 total_size, flash->page_size);
142 for (i = 0; i < total_size; i += flash->page_size)
143 erase_lhf00l04_block(flash, i);
144 printf("DONE ERASE\n");
Uwe Hermannffec5f32007-08-23 16:08:21 +0000145
146 return 0;
Ronald G. Minnich5b582f22006-02-23 17:16:44 +0000147}
148
Uwe Hermanna7e05482007-05-09 10:17:44 +0000149void write_page_lhf00l04(volatile uint8_t *bios, uint8_t *src,
150 volatile uint8_t *dst, int page_size)
Ronald G. Minnich5eaed682006-03-14 19:58:14 +0000151{
152 int i;
153
154 for (i = 0; i < page_size; i++) {
155 /* transfer data from source to destination */
156 *dst = 0x40;
157 *dst++ = *src++;
158 wait_lhf00l04(bios);
159 }
Ronald G. Minnich5eaed682006-03-14 19:58:14 +0000160}
161
Ronald G. Minnich5b582f22006-02-23 17:16:44 +0000162int write_lhf00l04(struct flashchip *flash, uint8_t *buf)
163{
164 int i;
Uwe Hermanna7e05482007-05-09 10:17:44 +0000165 int total_size = flash->total_size * 1024;
166 int page_size = flash->page_size;
Stefan Reinauerce532972007-05-23 17:20:56 +0000167 volatile uint8_t *bios = flash->virtual_memory;
Ronald G. Minnich5b582f22006-02-23 17:16:44 +0000168
Ronald G. Minnich5eaed682006-03-14 19:58:14 +0000169 erase_lhf00l04(flash);
170 if (*bios != 0xff) {
171 printf("ERASE FAILED\n");
172 return -1;
173 }
Ronald G. Minnich5b582f22006-02-23 17:16:44 +0000174 printf("Programming Page: ");
175 for (i = 0; i < total_size / page_size; i++) {
Ronald G. Minnich5b582f22006-02-23 17:16:44 +0000176 printf("%04d at address: 0x%08x", i, i * page_size);
Ronald G. Minnich5eaed682006-03-14 19:58:14 +0000177 write_page_lhf00l04(bios, buf + i * page_size,
Uwe Hermanna7e05482007-05-09 10:17:44 +0000178 bios + i * page_size, page_size);
179 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");
Ronald G. Minnich5b582f22006-02-23 17:16:44 +0000180 }
181 printf("\n");
Uwe Hermannfd374142007-08-23 15:20:38 +0000182 protect_jedec(bios);
Uwe Hermannffec5f32007-08-23 16:08:21 +0000183
184 return 0;
Ronald G. Minnich5b582f22006-02-23 17:16:44 +0000185}