board/sbc8548/law.c

   1 /*
   2  * Copyright 2008 Freescale Semiconductor, Inc.
   3  *
   4  * (C) Copyright 2000
   5  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   6  *
   7  * See file CREDITS for list of people who contributed to this
   8  * project.
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License as
  12  * published by the Free Software Foundation; either version 2 of
  13  * the License, or (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  23  * MA 02111-1307 USA
  24  */
  25
  26 #include <common.h>
  27 #include <asm/fsl_law.h>
  28 #include <asm/mmu.h>
  29
  30 /*
  31  * LAW(Local Access Window) configuration:
  32  *
  33  * 0x0000_0000  0x0fff_ffff     DDR                     256M
  34  * 0x8000_0000  0x9fff_ffff     PCI1 MEM                512M
  35  * 0xa000_0000  0xbfff_ffff     PCIe MEM                512M
  36  * 0xe000_0000  0xe000_ffff     CCSR                    1M
  37  * 0xe200_0000  0xe27f_ffff     PCI1 IO                 8M
  38  * 0xe280_0000  0xe2ff_ffff     PCIe IO                 8M
  39  * 0xec00_0000  0xefff_ffff     FLASH (2nd bank)        64M
  40  * 0xf000_0000  0xf7ff_ffff     SDRAM                   128M
  41  * 0xf8b0_0000  0xf80f_ffff     EEPROM                  1M
  42  * 0xff80_0000  0xffff_ffff     FLASH (boot bank)       8M
  43  *
  44  * If swapped CS0/CS6 via JP12+SW2.8:
  45  * 0xef80_0000  0xefff_ffff     FLASH (2nd bank)        8M
  46  * 0xfc00_0000  0xffff_ffff     FLASH (boot bank)       64M
  47  *
  48  * Notes:
  49  *      CCSRBAR and L2-as-SRAM don't need a configured Local Access Window.
  50  *      If flash is 8M at default position (last 8M), no LAW needed.
  51  */
  52
  53 struct law_entry law_table[] = {
  54 #ifdef CONFIG_SYS_ALT_BOOT
  55         SET_LAW(CONFIG_SYS_ALT_FLASH, LAW_SIZE_8M, LAW_TRGT_IF_LBC),
  56 #else
  57         SET_LAW(CONFIG_SYS_ALT_FLASH, LAW_SIZE_64M, LAW_TRGT_IF_LBC),
  58 #endif
  59 #ifndef CONFIG_SPD_EEPROM
  60         SET_LAW(CONFIG_SYS_DDR_SDRAM_BASE, LAW_SIZE_256M, LAW_TRGT_IF_DDR),
  61 #endif
  62 #ifdef CONFIG_SYS_LBC_SDRAM_BASE
  63         /* LBC window - maps 256M 0xf0000000 -> 0xffffffff */
  64         SET_LAW(CONFIG_SYS_LBC_SDRAM_BASE, LAW_SIZE_256M, LAW_TRGT_IF_LBC),
  65 #else
  66         /* LBC window - maps 128M 0xf8000000 -> 0xffffffff */
  67         SET_LAW(CONFIG_SYS_EPLD_BASE, LAW_SIZE_128M, LAW_TRGT_IF_LBC),
  68 #endif
  69 };
  70
  71 int num_law_entries = ARRAY_SIZE(law_table);