board/amcc/luan/init.S

   1 /*
   2  * (C) Copyright 2007
   3  * Stefan Roese, DENX Software Engineering, sr@denx.de.
   4  *
   5  *  Copyright (C) 2002 Scott McNutt <smcnutt@artesyncp.com>
   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 <ppc_asm.tmpl>
  27 #include <config.h>
  28 #include <asm/mmu.h>
  29 #include <asm/ppc4xx.h>
  30
  31 /**************************************************************************
  32  * TLB TABLE
  33  *
  34  * This table is used by the cpu boot code to setup the initial tlb
  35  * entries. Rather than make broad assumptions in the cpu source tree,
  36  * this table lets each board set things up however they like.
  37  *
  38  *  Pointer to the table is returned in r1
  39  *
  40  *************************************************************************/
  41
  42         .section .bootpg,"ax"
  43         .globl tlbtab
  44
  45 tlbtab:
  46         tlbtab_start
  47
  48         /*
  49          * BOOT_CS (FLASH) must be first. Before relocation SA_I can be off to use the
  50          * speed up boot process. It is patched after relocation to enable SA_I
  51          */
  52         tlbentry(0xfff00000, SZ_1M, 0xfff00000, 1, AC_RWX | SA_G)
  53
  54         tlbentry(0xffc00000, SZ_1M, 0xffc00000, 1, AC_RWX | SA_IG)
  55         tlbentry(0xffd00000, SZ_1M, 0xffd00000, 1, AC_RWX | SA_IG)
  56         tlbentry(0xffe00000, SZ_1M, 0xffe00000, 1, AC_RWX | SA_IG)
  57         tlbentry(0xff900000, SZ_1M, 0xff900000, 1, AC_RWX | SA_IG)
  58         tlbentry(CONFIG_SYS_EPLD_BASE, SZ_256K, 0xff000000, 1, AC_RW | SA_IG)
  59
  60         /*
  61          * TLB entries for SDRAM are not needed on this platform.
  62          * They are dynamically generated in the SPD DDR(2) detection
  63          * routine.
  64          */
  65
  66         /* internal ram (l2 cache) */
  67         tlbentry(CONFIG_SYS_ISRAM_BASE, SZ_256K, 0x80000000, 0, AC_RWX | SA_I)
  68
  69         /* peripherals at f0000000 */
  70         tlbentry(CONFIG_SYS_PERIPHERAL_BASE, SZ_4K, CONFIG_SYS_PERIPHERAL_BASE, 1, AC_RW | SA_IG)
  71
  72         /* PCI */
  73         tlbentry(CONFIG_SYS_PCI_BASE, SZ_256M, 0x00000000, 9, AC_RW | SA_IG)
  74         tlbentry(CONFIG_SYS_PCI_MEMBASE, SZ_256M, 0x10000000, 9, AC_RW | SA_IG)
  75         tlbtab_end