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  * $Id$
  25  */
  26
  27 #include "flash.h"
  28 #include "m29f400bt.h"
  29 #include "debug.h"
  30
  31 int probe_m29f400bt(struct flashchip *flash)
  32 {
  33         volatile uint8_t *bios = flash->virt_addr;
  34         uint8_t id1, id2;
  35
  36         *(volatile uint8_t *) (bios + 0xAAA) = 0xAA;
  37         *(volatile uint8_t *) (bios + 0x555) = 0x55;
  38         *(volatile uint8_t *) (bios + 0xAAA) = 0x90;
  39
  40         myusec_delay(10);
  41
  42         id1 = *(volatile uint8_t *) bios;
  43         id2 = *(volatile uint8_t *) (bios + 0x02);
  44
  45         *(volatile uint8_t *) (bios + 0xAAA) = 0xAA;
  46         *(volatile uint8_t *) (bios + 0x555) = 0x55;
  47         *(volatile uint8_t *) (bios + 0xAAA) = 0xF0;
  48
  49         myusec_delay(10);
  50
  51         printf_debug("%s: id1 0x%x, id2 0x%x\n", __FUNCTION__, id1, id2);
  52
  53
  54         if (id1 == flash->manufacture_id && id2 == flash->model_id)
  55                 return 1;
  56
  57         return 0;
  58 }
  59
  60 int erase_m29f400bt(struct flashchip *flash)
  61 {
  62         volatile uint8_t *bios = flash->virt_addr;
  63
  64         *(volatile uint8_t *) (bios + 0xAAA) = 0xAA;
  65         *(volatile uint8_t *) (bios + 0x555) = 0x55;
  66         *(volatile uint8_t *) (bios + 0xAAA) = 0x80;
  67
  68         *(volatile uint8_t *) (bios + 0xAAA) = 0xAA;
  69         *(volatile uint8_t *) (bios + 0x555) = 0x55;
  70         *(volatile uint8_t *) (bios + 0xAAA) = 0x10;
  71
  72         myusec_delay(10);
  73         toggle_ready_m29f400bt(bios);
  74
  75         return (0);
  76 }
  77
  78 int block_erase_m29f400bt(volatile uint8_t *bios, volatile uint8_t *dst)
  79 {
  80
  81         *(volatile uint8_t *) (bios + 0xAAA) = 0xAA;
  82         *(volatile uint8_t *) (bios + 0x555) = 0x55;
  83         *(volatile uint8_t *) (bios + 0xAAA) = 0x80;
  84
  85         *(volatile uint8_t *) (bios + 0xAAA) = 0xAA;
  86         *(volatile uint8_t *) (bios + 0x555) = 0x55;
  87         //*(volatile uint8_t *) (bios + 0xAAA) = 0x10;
  88         *dst = 0x30;
  89
  90         myusec_delay(10);
  91         toggle_ready_m29f400bt(bios);
  92
  93         return (0);
  94 }
  95
  96 int write_m29f400bt(struct flashchip *flash, uint8_t *buf)
  97 {
  98         int i;
  99         int total_size = flash->total_size * 1024, page_size =
 100             flash->page_size;
 101         volatile uint8_t *bios = flash->virt_addr;
 102
 103         //erase_m29f400bt (flash);
 104         printf("Programming Page:\n ");
 105         /*********************************
 106         *Pages for M29F400BT:
 107         * 16    0x7c000         0x7ffff         TOP
 108         *  8    0x7a000         0x7bfff
 109         *  8    0x78000         0x79fff
 110         * 32    0x70000         0x77fff
 111         * 64    0x60000         0x6ffff
 112         * 64    0x50000         0x5ffff
 113         * 64    0x40000         0x4ffff
 114         *---------------------------------
 115         * 64    0x30000         0x3ffff
 116         * 64    0x20000         0x2ffff
 117         * 64    0x10000         0x1ffff
 118         * 64    0x00000         0x0ffff         BOTTOM
 119         *********************************/
 120         printf("total_size/page_size = %d\n", total_size / page_size);
 121         for (i = 0; i < (total_size / page_size) - 1; i++) {
 122                 printf("%04d at address: 0x%08x\n", i, i * page_size);
 123                 block_erase_m29f400bt(bios, bios + i * page_size);
 124                 write_page_m29f400bt(bios, buf + i * page_size,
 125                                      bios + i * page_size, page_size);
 126                 printf
 127                     ("\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");
 128         }
 129
 130         printf("%04d at address: 0x%08x\n", 7, 0x70000);
 131         block_erase_m29f400bt(bios, bios + 0x70000);
 132         write_page_m29f400bt(bios, buf + 0x70000, bios + 0x70000,
 133                              32 * 1024);
 134
 135         printf("%04d at address: 0x%08x\n", 8, 0x78000);
 136         block_erase_m29f400bt(bios, bios + 0x78000);
 137         write_page_m29f400bt(bios, buf + 0x78000, bios + 0x78000,
 138                              8 * 1024);
 139
 140         printf("%04d at address: 0x%08x\n", 9, 0x7a000);
 141         block_erase_m29f400bt(bios, bios + 0x7a000);
 142         write_page_m29f400bt(bios, buf + 0x7a000, bios + 0x7a000,
 143                              8 * 1024);
 144
 145         printf("%04d at address: 0x%08x\n", 10, 0x7c000);
 146         block_erase_m29f400bt(bios, bios + 0x7c000);
 147         write_page_m29f400bt(bios, buf + 0x7c000, bios + 0x7c000,
 148                              16 * 1024);
 149
 150         printf("\n");
 151         //protect_m29f400bt (bios);
 152
 153         return (0);
 154 }
 155
 156 int write_linuxbios_m29f400bt(struct flashchip *flash, uint8_t *buf)
 157 {
 158         volatile uint8_t *bios = flash->virt_addr;
 159
 160         printf("Programming Page:\n ");
 161         /*********************************
 162         *Pages for M29F400BT:
 163         * 16    0x7c000         0x7ffff         TOP
 164         *  8    0x7a000         0x7bfff
 165         *  8    0x78000         0x79fff
 166         * 32    0x70000         0x77fff
 167         * 64    0x60000         0x6ffff
 168         * 64    0x50000         0x5ffff
 169         * 64    0x40000         0x4ffff
 170         *---------------------------------
 171         * 64    0x30000         0x3ffff
 172         * 64    0x20000         0x2ffff
 173         * 64    0x10000         0x1ffff
 174         * 64    0x00000         0x0ffff         BOTTOM
 175         *********************************/
 176         printf("%04d at address: 0x%08x\n", 7, 0x00000);
 177         block_erase_m29f400bt(bios, bios + 0x00000);
 178         write_page_m29f400bt(bios, buf + 0x00000, bios + 0x00000,
 179                              64 * 1024);
 180
 181         printf("%04d at address: 0x%08x\n", 7, 0x10000);
 182         block_erase_m29f400bt(bios, bios + 0x10000);
 183         write_page_m29f400bt(bios, buf + 0x10000, bios + 0x10000,
 184                              64 * 1024);
 185
 186         printf("%04d at address: 0x%08x\n", 7, 0x20000);
 187         block_erase_m29f400bt(bios, bios + 0x20000);
 188         write_page_m29f400bt(bios, buf + 0x20000, bios + 0x20000,
 189                              64 * 1024);
 190
 191         printf("%04d at address: 0x%08x\n", 7, 0x30000);
 192         block_erase_m29f400bt(bios, bios + 0x30000);
 193         write_page_m29f400bt(bios, buf + 0x30000, bios + 0x30000,
 194                              64 * 1024);
 195
 196         printf("\n");
 197         //protect_m29f400bt (bios);
 198
 199         return (0);
 200 }