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
  45 static unsigned long flash_addr_table[1][CFG_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  */
  57 static ulong flash_get_size(vu_long * addr, flash_info_t * info);
  58
  59 unsigned long flash_init(void)
  60 {
  61         unsigned long total_b = 0;
  62         unsigned long size_b[CFG_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 < CFG_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, CFG_MONITOR_BASE,
  96                                     CFG_MONITOR_BASE + CFG_MONITOR_LEN - 1,
  97                                     &flash_info[2]);
  98 #ifdef CFG_ENV_IS_IN_FLASH
  99                 (void)flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR,
 100                                     CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1,
 101                                     &flash_info[2]);
 102                 (void)flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR_REDUND,
 103                                     CFG_ENV_ADDR_REDUND + CFG_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 }