util/flashrom/m29f400bt.c

   1 /*
   2  * m29f400bt.c: driver for programming JEDEC standard flash parts
   3  *
   4  *
   5  * Copyright 2000 Silicon Integrated System Corporation
   6  *
   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  *
  22  * Reference:
  23  *
  24  */
  25
  26 #include "flash.h"
  27 #include "m29f400bt.h"
  28 #include "debug.h"
  29
  30 void toggle_ready_m29f400bt(volatile uint8_t *dst)
  31 {
  32         unsigned int i = 0;
  33         uint8_t tmp1, tmp2;
  34
  35         tmp1 = *dst & 0x40;
  36
  37         while (i++ < 0xFFFFFF) {
  38                 tmp2 = *dst & 0x40;
  39                 if (tmp1 == tmp2) {
  40                         break;
  41                 }
  42                 tmp1 = tmp2;
  43         }
  44 }
  45
  46 void data_polling_m29f400bt(volatile uint8_t *dst, uint8_t data)
  47 {
  48         unsigned int i = 0;
  49         uint8_t tmp;
  50
  51         data &= 0x80;
  52
  53         while (i++ < 0xFFFFFF) {
  54                 tmp = *dst & 0x80;
  55                 if (tmp == data) {
  56                         break;
  57                 }
  58         }
  59 }
  60
  61 void protect_m29f400bt(volatile uint8_t *bios)
  62 {
  63         *(volatile uint8_t *)(bios + 0xAAA) = 0xAA;
  64         *(volatile uint8_t *)(bios + 0x555) = 0x55;
  65         *(volatile uint8_t *)(bios + 0xAAA) = 0xA0;
  66
  67         usleep(200);
  68 }
  69
  70 void write_page_m29f400bt(volatile uint8_t *bios, uint8_t *src,
  71                           volatile uint8_t *dst, int page_size)
  72 {
  73         int i;
  74
  75         for (i = 0; i < page_size; i++) {
  76                 *(volatile uint8_t *)(bios + 0xAAA) = 0xAA;
  77                 *(volatile uint8_t *)(bios + 0x555) = 0x55;
  78                 *(volatile uint8_t *)(bios + 0xAAA) = 0xA0;
  79
  80                 /* transfer data from source to destination */
  81                 *dst = *src;
  82                 //*(volatile char *) (bios) = 0xF0;
  83                 //usleep(5);
  84                 toggle_ready_m29f400bt(dst);
  85                 printf
  86                     ("Value in the flash at address %p = %#x, want %#x\n",
  87                      (uint8_t *) (dst - bios), *dst, *src);
  88                 dst++;
  89                 src++;
  90         }
  91 }
  92
  93 int probe_m29f400bt(struct flashchip *flash)
  94 {
  95         volatile uint8_t *bios = flash->virtual_memory;
  96         uint8_t id1, id2;
  97
  98         *(volatile uint8_t *)(bios + 0xAAA) = 0xAA;
  99         *(volatile uint8_t *)(bios + 0x555) = 0x55;
 100         *(volatile uint8_t *)(bios + 0xAAA) = 0x90;
 101
 102         myusec_delay(10);
 103
 104         id1 = *(volatile uint8_t *)bios;
 105         id2 = *(volatile uint8_t *)(bios + 0x02);
 106
 107         *(volatile uint8_t *)(bios + 0xAAA) = 0xAA;
 108         *(volatile uint8_t *)(bios + 0x555) = 0x55;
 109         *(volatile uint8_t *)(bios + 0xAAA) = 0xF0;
 110
 111         myusec_delay(10);
 112
 113         printf_debug("%s: id1 0x%x, id2 0x%x\n", __FUNCTION__, id1, id2);
 114
 115         if (id1 == flash->manufacture_id && id2 == flash->model_id)
 116                 return 1;
 117
 118         return 0;
 119 }
 120
 121 int erase_m29f400bt(struct flashchip *flash)
 122 {
 123         volatile uint8_t *bios = flash->virtual_memory;
 124
 125         *(volatile uint8_t *)(bios + 0xAAA) = 0xAA;
 126         *(volatile uint8_t *)(bios + 0x555) = 0x55;
 127         *(volatile uint8_t *)(bios + 0xAAA) = 0x80;
 128
 129         *(volatile uint8_t *)(bios + 0xAAA) = 0xAA;
 130         *(volatile uint8_t *)(bios + 0x555) = 0x55;
 131         *(volatile uint8_t *)(bios + 0xAAA) = 0x10;
 132
 133         myusec_delay(10);
 134         toggle_ready_m29f400bt(bios);
 135
 136         return (0);
 137 }
 138
 139 int block_erase_m29f400bt(volatile uint8_t *bios, volatile uint8_t *dst)
 140 {
 141
 142         *(volatile uint8_t *)(bios + 0xAAA) = 0xAA;
 143         *(volatile uint8_t *)(bios + 0x555) = 0x55;
 144         *(volatile uint8_t *)(bios + 0xAAA) = 0x80;
 145
 146         *(volatile uint8_t *)(bios + 0xAAA) = 0xAA;
 147         *(volatile uint8_t *)(bios + 0x555) = 0x55;
 148         //*(volatile uint8_t *) (bios + 0xAAA) = 0x10;
 149         *dst = 0x30;
 150
 151         myusec_delay(10);
 152         toggle_ready_m29f400bt(bios);
 153
 154         return (0);
 155 }
 156
 157 int write_m29f400bt(struct flashchip *flash, uint8_t *buf)
 158 {
 159         int i;
 160         int total_size = flash->total_size * 1024;
 161         int page_size = flash->page_size;
 162         volatile uint8_t *bios = flash->virtual_memory;
 163
 164         //erase_m29f400bt (flash);
 165         printf("Programming Page:\n ");
 166         /*********************************
 167         *Pages for M29F400BT:
 168         * 16    0x7c000         0x7ffff         TOP
 169         *  8    0x7a000         0x7bfff
 170         *  8    0x78000         0x79fff
 171         * 32    0x70000         0x77fff
 172         * 64    0x60000         0x6ffff
 173         * 64    0x50000         0x5ffff
 174         * 64    0x40000         0x4ffff
 175         *---------------------------------
 176         * 64    0x30000         0x3ffff
 177         * 64    0x20000         0x2ffff
 178         * 64    0x10000         0x1ffff
 179         * 64    0x00000         0x0ffff         BOTTOM
 180         *********************************/
 181         printf("total_size/page_size = %d\n", total_size / page_size);
 182         for (i = 0; i < (total_size / page_size) - 1; i++) {
 183                 printf("%04d at address: 0x%08x\n", i, i * page_size);
 184                 block_erase_m29f400bt(bios, bios + i * page_size);
 185                 write_page_m29f400bt(bios, buf + i * page_size,
 186                                      bios + i * page_size, page_size);
 187                 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");
 188         }
 189
 190         printf("%04d at address: 0x%08x\n", 7, 0x70000);
 191         block_erase_m29f400bt(bios, bios + 0x70000);
 192         write_page_m29f400bt(bios, buf + 0x70000, bios + 0x70000, 32 * 1024);
 193
 194         printf("%04d at address: 0x%08x\n", 8, 0x78000);
 195         block_erase_m29f400bt(bios, bios + 0x78000);
 196         write_page_m29f400bt(bios, buf + 0x78000, bios + 0x78000, 8 * 1024);
 197
 198         printf("%04d at address: 0x%08x\n", 9, 0x7a000);
 199         block_erase_m29f400bt(bios, bios + 0x7a000);
 200         write_page_m29f400bt(bios, buf + 0x7a000, bios + 0x7a000, 8 * 1024);
 201
 202         printf("%04d at address: 0x%08x\n", 10, 0x7c000);
 203         block_erase_m29f400bt(bios, bios + 0x7c000);
 204         write_page_m29f400bt(bios, buf + 0x7c000, bios + 0x7c000, 16 * 1024);
 205
 206         printf("\n");
 207         //protect_m29f400bt (bios);
 208
 209         return (0);
 210 }
 211
 212 int write_linuxbios_m29f400bt(struct flashchip *flash, uint8_t *buf)
 213 {
 214         volatile uint8_t *bios = flash->virtual_memory;
 215
 216         printf("Programming Page:\n ");
 217         /*********************************
 218         *Pages for M29F400BT:
 219         * 16    0x7c000         0x7ffff         TOP
 220         *  8    0x7a000         0x7bfff
 221         *  8    0x78000         0x79fff
 222         * 32    0x70000         0x77fff
 223         * 64    0x60000         0x6ffff
 224         * 64    0x50000         0x5ffff
 225         * 64    0x40000         0x4ffff
 226         *---------------------------------
 227         * 64    0x30000         0x3ffff
 228         * 64    0x20000         0x2ffff
 229         * 64    0x10000         0x1ffff
 230         * 64    0x00000         0x0ffff         BOTTOM
 231         *********************************/
 232         printf("%04d at address: 0x%08x\n", 7, 0x00000);
 233         block_erase_m29f400bt(bios, bios + 0x00000);
 234         write_page_m29f400bt(bios, buf + 0x00000, bios + 0x00000, 64 * 1024);
 235
 236         printf("%04d at address: 0x%08x\n", 7, 0x10000);
 237         block_erase_m29f400bt(bios, bios + 0x10000);
 238         write_page_m29f400bt(bios, buf + 0x10000, bios + 0x10000, 64 * 1024);
 239
 240         printf("%04d at address: 0x%08x\n", 7, 0x20000);
 241         block_erase_m29f400bt(bios, bios + 0x20000);
 242         write_page_m29f400bt(bios, buf + 0x20000, bios + 0x20000, 64 * 1024);
 243
 244         printf("%04d at address: 0x%08x\n", 7, 0x30000);
 245         block_erase_m29f400bt(bios, bios + 0x30000);
 246         write_page_m29f400bt(bios, buf + 0x30000, bios + 0x30000, 64 * 1024);
 247
 248         printf("\n");
 249         //protect_m29f400bt (bios);
 250
 251         return (0);
 252 }