LXR uboot/board/esd/adciop/flash.c

   1/*
   2 * (C) Copyright 2001
   3 * Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com
   4 *
   5 * See file CREDITS for list of people who contributed to this
   6 * project.
   7 *
   8 * This program is free software; you can redistribute it and/or
   9 * modify it under the terms of the GNU General Public License as
  10 * published by the Free Software Foundation; either version 2 of
  11 * the License, or (at your option) any later version.
  12 *
  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.
  17 *
  18 * You should have received a copy of the GNU General Public License
  19 * along with this program; if not, write to the Free Software
  20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21 * MA 02111-1307 USA
  22 */
  23
  24#include <common.h>
  25#include <ppc4xx.h>
  26#include <asm/processor.h>
  27
  28/*
  29 * include common flash code (for esd boards)
  30 */
  31#include "../common/flash.c"
  32
  33/*-----------------------------------------------------------------------
  34 * Functions
  35 */
  36static ulong flash_get_size (vu_long *addr, flash_info_t *info);
  37static void flash_get_offsets (ulong base, flash_info_t *info);
  38
  39/*-----------------------------------------------------------------------
  40 */
  41
  42unsigned long flash_init (void)
  43{
  44        unsigned long size_b0, size_b1;
  45        int i;
  46
  47        /* Init: no FLASHes known */
  48        for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
  49                flash_info[i].flash_id = FLASH_UNKNOWN;
  50        }
  51
  52        size_b0 = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]);
  53
  54        if (flash_info[0].flash_id == FLASH_UNKNOWN) {
  55                printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
  56                        size_b0, size_b0<<20);
  57        }
  58
  59        size_b1 = flash_get_size((vu_long *)FLASH_BASE1_PRELIM, &flash_info[1]);
  60
  61        if (size_b1 > size_b0) {
  62                printf ("## ERROR: "
  63                        "Bank 1 (0x%08lx = %ld MB) > Bank 0 (0x%08lx = %ld MB)\n",
  64                        size_b1, size_b1<<20,
  65                        size_b0, size_b0<<20
  66                );
  67                flash_info[0].flash_id  = FLASH_UNKNOWN;
  68                flash_info[1].flash_id  = FLASH_UNKNOWN;
  69                flash_info[0].sector_count      = -1;
  70                flash_info[1].sector_count      = -1;
  71                flash_info[0].size              = 0;
  72                flash_info[1].size              = 0;
  73                return (0);
  74        }
  75
  76        /* Re-do sizing to get full correct info */
  77        size_b0 = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]);
  78
  79        flash_get_offsets (FLASH_BASE0_PRELIM, &flash_info[0]);
  80
  81        /* monitor protection ON by default */
  82        flash_protect(FLAG_PROTECT_SET,
  83                      FLASH_BASE0_PRELIM+size_b0-monitor_flash_len,
  84                      FLASH_BASE0_PRELIM+size_b0-1,
  85                      &flash_info[0]);
  86
  87        if (size_b1) {
  88                /* Re-do sizing to get full correct info */
  89                size_b1 = flash_get_size((vu_long *)(FLASH_BASE0_PRELIM + size_b0),
  90                                          &flash_info[1]);
  91
  92                flash_get_offsets (FLASH_BASE0_PRELIM + size_b0, &flash_info[1]);
  93
  94                /* monitor protection ON by default */
  95                flash_protect(FLAG_PROTECT_SET,
  96                              FLASH_BASE0_PRELIM+size_b0+size_b1-monitor_flash_len,
  97                              FLASH_BASE0_PRELIM+size_b0+size_b1-1,
  98                              &flash_info[1]);
  99                /* monitor protection OFF by default (one is enough) */
 100                flash_protect(FLAG_PROTECT_CLEAR,
 101                              FLASH_BASE0_PRELIM+size_b0-monitor_flash_len,
 102                              FLASH_BASE0_PRELIM+size_b0-1,
 103                              &flash_info[0]);
 104        } else {
 105                flash_info[1].flash_id = FLASH_UNKNOWN;
 106                flash_info[1].sector_count = -1;
 107        }
 108
 109        flash_info[0].size = size_b0;
 110        flash_info[1].size = size_b1;
 111
 112        return (size_b0 + size_b1);
 113}
 114