LXR uboot/board/amcc/luan/flash.c

   1/*
   2 * (C) Copyright 2002
   3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4 *
   5 * (C) Copyright 2002 Jun Gu <jung@artesyncp.com>
   6 * Add support for Am29F016D and dynamic switch setting.
   7 *
   8 * See file CREDITS for list of people who contributed to this
   9 * project.
  10 *
  11 * This program is free software; you can redistribute it and/or
  12 * modify it under the terms of the GNU General Public License as
  13 * published by the Free Software Foundation; either version 2 of
  14 * the License, or (at your option) any later version.
  15 *
  16 * This program is distributed in the hope that it will be useful,
  17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 * GNU General Public License for more details.
  20 *
  21 * You should have received a copy of the GNU General Public License
  22 * along with this program; if not, write to the Free Software
  23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  24 * MA 02111-1307 USA
  25 */
  26
  27/*
  28 * Modified 4/5/2001
  29 * Wait for completion of each sector erase command issued
  30 * 4/5/2001
  31 * Chris Hallinan - DS4.COM, Inc. - clh@net1plus.com
  32 */
  33
  34#include <common.h>
  35#include <ppc4xx.h>
  36#include <asm/processor.h>
  37
  38#undef DEBUG
  39#ifdef DEBUG
  40#define DEBUGF(x...) printf(x)
  41#else
  42#define DEBUGF(x...)
  43#endif                          /* DEBUG */
  44
  45static unsigned long flash_addr_table[1][CONFIG_SYS_MAX_FLASH_BANKS] = {
  46        {0xff900000, 0xff980000, 0xffc00000},   /* 0:000: configuraton 3 */
  47};
  48
  49/*
  50 * include common flash code (for amcc boards)
  51 */
  52#include "../common/flash.c"
  53
  54/*-----------------------------------------------------------------------
  55 * Functions
  56 */
  57static ulong flash_get_size(vu_long * addr, flash_info_t * info);
  58
  59unsigned long flash_init(void)
  60{
  61        unsigned long total_b = 0;
  62        unsigned long size_b[CONFIG_SYS_MAX_FLASH_BANKS];
  63        unsigned short index = 0;
  64        int i;
  65
  66        /* read FPGA base register FPGA_REG0 */
  67
  68        DEBUGF("\n");
  69        DEBUGF("FLASH: Index: %d\n", index);
  70
  71        /* Init: no FLASHes known */
  72        for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
  73                flash_info[i].flash_id = FLASH_UNKNOWN;
  74                flash_info[i].sector_count = -1;
  75                flash_info[i].size = 0;
  76
  77                /* check whether the address is 0 */
  78                if (flash_addr_table[index][i] == 0) {
  79                        continue;
  80                }
  81
  82                /* call flash_get_size() to initialize sector address */
  83                size_b[i] = flash_get_size((vu_long *)
  84                                           flash_addr_table[index][i],
  85                                           &flash_info[i]);
  86                flash_info[i].size = size_b[i];
  87                if (flash_info[i].flash_id == FLASH_UNKNOWN) {
  88                        printf("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n",
  89                               i, size_b[i], size_b[i] << 20);
  90                        flash_info[i].sector_count = -1;
  91                        flash_info[i].size = 0;
  92                }
  93
  94                /* Monitor protection ON by default */
  95                (void)flash_protect(FLAG_PROTECT_SET, CONFIG_SYS_MONITOR_BASE,
  96                                    CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN - 1,
  97                                    &flash_info[2]);
  98#ifdef CONFIG_ENV_IS_IN_FLASH
  99                (void)flash_protect(FLAG_PROTECT_SET, CONFIG_ENV_ADDR,
 100                                    CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
 101                                    &flash_info[2]);
 102                (void)flash_protect(FLAG_PROTECT_SET, CONFIG_ENV_ADDR_REDUND,
 103                                    CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
 104                                    &flash_info[2]);
 105#endif
 106
 107                total_b += flash_info[i].size;
 108        }
 109
 110        return total_b;
 111}
 112