board/alaska/alaska.c

   1 /*
   2  * (C) Copyright 2004, Freescale Inc.
   3  * TsiChung Liew, Tsi-Chung.Liew@freescale.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 <mpc8220.h>
  26 #include <asm/processor.h>
  27 #include <asm/mmu.h>
  28
  29 void setupBat (ulong size)
  30 {
  31         ulong batu, batl;
  32         int blocksize = 0;
  33
  34         /* Flash 0 */
  35 #if defined (CONFIG_SYS_AMD_BOOT)
  36         batu = CONFIG_SYS_FLASH0_BASE | BATU_BL_512K | BPP_RW | BPP_RX;
  37 #else
  38         batu = CONFIG_SYS_FLASH0_BASE | BATU_BL_16M | BPP_RW | BPP_RX;
  39 #endif
  40         batl = CONFIG_SYS_FLASH0_BASE | 0x22;
  41         write_bat (IBAT0, batu, batl);
  42         write_bat (DBAT0, batu, batl);
  43
  44         /* Flash 1 */
  45 #if defined (CONFIG_SYS_AMD_BOOT)
  46         batu = CONFIG_SYS_FLASH1_BASE | BATU_BL_16M | BPP_RW | BPP_RX;
  47 #else
  48         batu = CONFIG_SYS_FLASH1_BASE | BATU_BL_512K | BPP_RW | BPP_RX;
  49 #endif
  50         batl = CONFIG_SYS_FLASH1_BASE | 0x22;
  51         write_bat (IBAT1, batu, batl);
  52         write_bat (DBAT1, batu, batl);
  53
  54         /* CPLD */
  55         batu = CONFIG_SYS_CPLD_BASE | BATU_BL_512K | BPP_RW | BPP_RX;
  56         batl = CONFIG_SYS_CPLD_BASE | 0x22;
  57         write_bat (IBAT2, 0, 0);
  58         write_bat (DBAT2, batu, batl);
  59
  60         /* FPGA */
  61         batu = CONFIG_SYS_FPGA_BASE | BATU_BL_512K | BPP_RW | BPP_RX;
  62         batl = CONFIG_SYS_FPGA_BASE | 0x22;
  63         write_bat (IBAT3, 0, 0);
  64         write_bat (DBAT3, batu, batl);
  65
  66         /* MBAR - Data only */
  67         batu = CONFIG_SYS_MBAR | BPP_RW | BPP_RX;
  68         batl = CONFIG_SYS_MBAR | 0x22;
  69         mtspr (IBAT4L, 0);
  70         mtspr (IBAT4U, 0);
  71         mtspr (DBAT4L, batl);
  72         mtspr (DBAT4U, batu);
  73
  74         /* MBAR - SRAM */
  75         batu = CONFIG_SYS_SRAM_BASE | BPP_RW | BPP_RX;
  76         batl = CONFIG_SYS_SRAM_BASE | 0x42;
  77         mtspr (IBAT5L, batl);
  78         mtspr (IBAT5U, batu);
  79         mtspr (DBAT5L, batl);
  80         mtspr (DBAT5U, batu);
  81
  82         if (size <= 0x800000)   /* 8MB */
  83                 blocksize = BATU_BL_8M;
  84         else if (size <= 0x1000000)     /* 16MB */
  85                 blocksize = BATU_BL_16M;
  86         else if (size <= 0x2000000)     /* 32MB */
  87                 blocksize = BATU_BL_32M;
  88         else if (size <= 0x4000000)     /* 64MB */
  89                 blocksize = BATU_BL_64M;
  90         else if (size <= 0x8000000)     /* 128MB */
  91                 blocksize = BATU_BL_128M;
  92         else if (size <= 0x10000000)    /* 256MB */
  93                 blocksize = BATU_BL_256M;
  94
  95         /* Memory */
  96         batu = CONFIG_SYS_SDRAM_BASE | blocksize | BPP_RW | BPP_RX;
  97         batl = CONFIG_SYS_SDRAM_BASE | 0x42;
  98         mtspr (IBAT6L, batl);
  99         mtspr (IBAT6U, batu);
 100         mtspr (DBAT6L, batl);
 101         mtspr (DBAT6U, batu);
 102
 103         /* memory size is less than 256MB */
 104         if (size <= 0x10000000) {
 105                 /* Nothing */
 106                 batu = 0;
 107                 batl = 0;
 108         } else {
 109                 size -= 0x10000000;
 110                 if (size <= 0x800000)   /* 8MB */
 111                         blocksize = BATU_BL_8M;
 112                 else if (size <= 0x1000000)     /* 16MB */
 113                         blocksize = BATU_BL_16M;
 114                 else if (size <= 0x2000000)     /* 32MB */
 115                         blocksize = BATU_BL_32M;
 116                 else if (size <= 0x4000000)     /* 64MB */
 117                         blocksize = BATU_BL_64M;
 118                 else if (size <= 0x8000000)     /* 128MB */
 119                         blocksize = BATU_BL_128M;
 120                 else if (size <= 0x10000000)    /* 256MB */
 121                         blocksize = BATU_BL_256M;
 122
 123                 batu = (CONFIG_SYS_SDRAM_BASE +
 124                         0x10000000) | blocksize | BPP_RW | BPP_RX;
 125                 batl = (CONFIG_SYS_SDRAM_BASE + 0x10000000) | 0x42;
 126         }
 127
 128         mtspr (IBAT7L, batl);
 129         mtspr (IBAT7U, batu);
 130         mtspr (DBAT7L, batl);
 131         mtspr (DBAT7U, batu);
 132 }
 133
 134 phys_size_t initdram (int board_type)
 135 {
 136         ulong size;
 137
 138         size = dramSetup ();
 139
 140 /* if iCache ad dCache is defined */
 141 #if defined(CONFIG_CMD_CACHE)
 142 /*    setupBat(size);*/
 143 #endif
 144
 145         return size;
 146 }
 147
 148 int checkboard (void)
 149 {
 150         puts ("Board: Alaska MPC8220 Evaluation Board\n");
 151
 152         return 0;
 153 }