board/pcs440ep/init.S

   1 /*
   2  * (C) Copyright 2006
   3  * Stefan Roese, DENX Software Engineering, sr@denx.de.
   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 <asm-offsets.h>
  25 #include <ppc_asm.tmpl>
  26 #include <asm/mmu.h>
  27 #include <config.h>
  28
  29 /**************************************************************************
  30  * TLB TABLE
  31  *
  32  * This table is used by the cpu boot code to setup the initial tlb
  33  * entries. Rather than make broad assumptions in the cpu source tree,
  34  * this table lets each board set things up however they like.
  35  *
  36  *  Pointer to the table is returned in r1
  37  *
  38  *************************************************************************/
  39
  40     .section .bootpg,"ax"
  41     .globl tlbtab
  42
  43 tlbtab:
  44         tlbtab_start
  45
  46         /*
  47          * BOOT_CS (FLASH) must be first. Before relocation SA_I can be off to use the
  48          * speed up boot process. It is patched after relocation to enable SA_I
  49          */
  50         tlbentry( CONFIG_SYS_BOOT_BASE_ADDR, SZ_256M, CONFIG_SYS_BOOT_BASE_ADDR, 0, AC_RWX | SA_G/*|SA_I*/)
  51
  52         /* TLB-entry for init-ram in dcache (SA_I must be turned off!) */
  53         tlbentry( CONFIG_SYS_INIT_RAM_ADDR, SZ_64K, CONFIG_SYS_INIT_RAM_ADDR, 0, AC_RWX | SA_G )
  54
  55         /*
  56          * TLB entries for SDRAM are not needed on this platform.
  57          * They are dynamically generated in the SPD DDR detection
  58          * routine.
  59          */
  60
  61         tlbentry( CONFIG_SYS_PCI_BASE, SZ_256M, CONFIG_SYS_PCI_BASE, 0, AC_RW | SA_IG )
  62
  63         /* PCI */
  64         tlbentry( CONFIG_SYS_PCI_MEMBASE, SZ_256M, CONFIG_SYS_PCI_MEMBASE, 0, AC_RW | SA_IG )
  65         tlbentry( CONFIG_SYS_PCI_MEMBASE1, SZ_256M, CONFIG_SYS_PCI_MEMBASE1, 0, AC_RW | SA_IG )
  66         tlbentry( CONFIG_SYS_PCI_MEMBASE2, SZ_256M, CONFIG_SYS_PCI_MEMBASE2, 0, AC_RW | SA_IG )
  67         tlbentry( CONFIG_SYS_PCI_MEMBASE3, SZ_256M, CONFIG_SYS_PCI_MEMBASE3, 0, AC_RW | SA_IG )
  68
  69         /* USB 2.0 Device */
  70         tlbentry( CONFIG_SYS_USB_DEVICE, SZ_1K, 0x50000000, 0, AC_RW | SA_IG )
  71
  72         tlbtab_end