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 int probe_m29f400bt(struct flashchip *flash)
  31 {
  32         volatile uint8_t *bios = flash->virt_addr;
  33         uint8_t id1, id2;
  34
  35         *(volatile uint8_t *) (bios + 0xAAA) = 0xAA;
  36         *(volatile uint8_t *) (bios + 0x555) = 0x55;
  37         *(volatile uint8_t *) (bios + 0xAAA) = 0x90;
  38
  39         myusec_delay(10);
  40
  41         id1 = *(volatile uint8_t *) bios;
  42         id2 = *(volatile uint8_t *) (bios + 0x02);
  43
  44         *(volatile uint8_t *) (bios + 0xAAA) = 0xAA;
  45         *(volatile uint8_t *) (bios + 0x555) = 0x55;
  46         *(volatile uint8_t *) (bios + 0xAAA) = 0xF0;
  47
  48         myusec_delay(10);
  49
  50         printf_debug("%s: id1 0x%x, id2 0x%x\n", __FUNCTION__, id1, id2);
  51
  52
  53         if (id1 == flash->manufacture_id && id2 == flash->model_id)
  54                 return 1;
  55
  56         return 0;
  57 }
  58
  59 int erase_m29f400bt(struct flashchip *flash)
  60 {
  61         volatile uint8_t *bios = flash->virt_addr;
  62
  63         *(volatile uint8_t *) (bios + 0xAAA) = 0xAA;
  64         *(volatile uint8_t *) (bios + 0x555) = 0x55;
  65         *(volatile uint8_t *) (bios + 0xAAA) = 0x80;
  66
  67         *(volatile uint8_t *) (bios + 0xAAA) = 0xAA;
  68         *(volatile uint8_t *) (bios + 0x555) = 0x55;
  69         *(volatile uint8_t *) (bios + 0xAAA) = 0x10;
  70
  71         myusec_delay(10);
  72         toggle_ready_m29f400bt(bios);
  73
  74         return (0);
  75 }
  76
  77 int block_erase_m29f400bt(volatile uint8_t *bios, volatile uint8_t *dst)
  78 {
  79
  80         *(volatile uint8_t *) (bios + 0xAAA) = 0xAA;
  81         *(volatile uint8_t *) (bios + 0x555) = 0x55;
  82         *(volatile uint8_t *) (bios + 0xAAA) = 0x80;
  83
  84         *(volatile uint8_t *) (bios + 0xAAA) = 0xAA;
  85         *(volatile uint8_t *) (bios + 0x555) = 0x55;
  86         //*(volatile uint8_t *) (bios + 0xAAA) = 0x10;
  87         *dst = 0x30;
  88
  89         myusec_delay(10);
  90         toggle_ready_m29f400bt(bios);
  91
  92         return (0);
  93 }
  94
  95 int write_m29f400bt(struct flashchip *flash, uint8_t *buf)
  96 {
  97         int i;
  98         int total_size = flash->total_size * 1024, page_size =
  99             flash->page_size;
 100         volatile uint8_t *bios = flash->virt_addr;
 101
 102         //erase_m29f400bt (flash);
 103         printf("Programming Page:\n ");
 104         /*********************************
 105         *Pages for M29F400BT:
 106         * 16    0x7c000         0x7ffff         TOP
 107         *  8    0x7a000         0x7bfff
 108         *  8    0x78000         0x79fff
 109         * 32    0x70000         0x77fff
 110         * 64    0x60000         0x6ffff
 111         * 64    0x50000         0x5ffff
 112         * 64    0x40000         0x4ffff
 113         *---------------------------------
 114         * 64    0x30000         0x3ffff
 115         * 64    0x20000         0x2ffff
 116         * 64    0x10000         0x1ffff
 117         * 64    0x00000         0x0ffff         BOTTOM
 118         *********************************/
 119         printf("total_size/page_size = %d\n", total_size / page_size);
 120         for (i = 0; i < (total_size / page_size) - 1; i++) {
 121                 printf("%04d at address: 0x%08x\n", i, i * page_size);
 122                 block_erase_m29f400bt(bios, bios + i * page_size);
 123                 write_page_m29f400bt(bios, buf + i * page_size,
 124                                      bios + i * page_size, page_size);
 125                 printf
 126                     ("\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");
 127         }
 128
 129         printf("%04d at address: 0x%08x\n", 7, 0x70000);
 130         block_erase_m29f400bt(bios, bios + 0x70000);
 131         write_page_m29f400bt(bios, buf + 0x70000, bios + 0x70000,
 132                              32 * 1024);
 133
 134         printf("%04d at address: 0x%08x\n", 8, 0x78000);
 135         block_erase_m29f400bt(bios, bios + 0x78000);
 136         write_page_m29f400bt(bios, buf + 0x78000, bios + 0x78000,
 137                              8 * 1024);
 138
 139         printf("%04d at address: 0x%08x\n", 9, 0x7a000);
 140         block_erase_m29f400bt(bios, bios + 0x7a000);
 141         write_page_m29f400bt(bios, buf + 0x7a000, bios + 0x7a000,
 142                              8 * 1024);
 143
 144         printf("%04d at address: 0x%08x\n", 10, 0x7c000);
 145         block_erase_m29f400bt(bios, bios + 0x7c000);
 146         write_page_m29f400bt(bios, buf + 0x7c000, bios + 0x7c000,
 147                              16 * 1024);
 148
 149         printf("\n");
 150         //protect_m29f400bt (bios);
 151
 152         return (0);
 153 }
 154
 155 int write_linuxbios_m29f400bt(struct flashchip *flash, uint8_t *buf)
 156 {
 157         volatile uint8_t *bios = flash->virt_addr;
 158
 159         printf("Programming Page:\n ");
 160         /*********************************
 161         *Pages for M29F400BT:
 162         * 16    0x7c000         0x7ffff         TOP
 163         *  8    0x7a000         0x7bfff
 164         *  8    0x78000         0x79fff
 165         * 32    0x70000         0x77fff
 166         * 64    0x60000         0x6ffff
 167         * 64    0x50000         0x5ffff
 168         * 64    0x40000         0x4ffff
 169         *---------------------------------
 170         * 64    0x30000         0x3ffff
 171         * 64    0x20000         0x2ffff
 172         * 64    0x10000         0x1ffff
 173         * 64    0x00000         0x0ffff         BOTTOM
 174         *********************************/
 175         printf("%04d at address: 0x%08x\n", 7, 0x00000);
 176         block_erase_m29f400bt(bios, bios + 0x00000);
 177         write_page_m29f400bt(bios, buf + 0x00000, bios + 0x00000,
 178                              64 * 1024);
 179
 180         printf("%04d at address: 0x%08x\n", 7, 0x10000);
 181         block_erase_m29f400bt(bios, bios + 0x10000);
 182         write_page_m29f400bt(bios, buf + 0x10000, bios + 0x10000,
 183                              64 * 1024);
 184
 185         printf("%04d at address: 0x%08x\n", 7, 0x20000);
 186         block_erase_m29f400bt(bios, bios + 0x20000);
 187         write_page_m29f400bt(bios, buf + 0x20000, bios + 0x20000,
 188                              64 * 1024);
 189
 190         printf("%04d at address: 0x%08x\n", 7, 0x30000);
 191         block_erase_m29f400bt(bios, bios + 0x30000);
 192         write_page_m29f400bt(bios, buf + 0x30000, bios + 0x30000,
 193                              64 * 1024);
 194
 195         printf("\n");
 196         //protect_m29f400bt (bios);
 197
 198         return (0);
 199 }