board/lart/memsetup.S

   1 /*
   2  * Memory Setup stuff - taken from blob memsetup.S
   3  *
   4  * Copyright (C) 1999 2000 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl) and
   5  *                     Jan-Derk Bakker (J.D.Bakker@its.tudelft.nl)
   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
  27
  28 #include <config.h>
  29 #include <version.h>
  30
  31
  32 /* some parameters for the board */
  33
  34 MEM_BASE:       .long   0xa0000000
  35 MEM_START:      .long   0xc0000000
  36
  37 #define MDCNFG  0x00
  38 #define MDCAS0  0x04
  39 #define MDCAS1  0x08
  40 #define MDCAS2  0x0c
  41 #define MSC0    0x10
  42 #define MSC1    0x14
  43 #define MECR    0x18
  44
  45 mdcas0:         .long   0xc71c703f
  46 mdcas1:         .long   0xffc71c71
  47 mdcas2:         .long   0xffffffff
  48 /* mdcnfg:              .long   0x0bb2bcbf */
  49 mdcnfg:         .long   0x0334b22f      @ alt
  50 /* mcs0:                .long   0xfff8fff8 */
  51 msc0:           .long   0xad8c4888      @ alt
  52 mecr:           .long   0x00060006
  53 /* mecr:                .long   0x994a994a      @ alt */
  54
  55 /* setting up the memory */
  56
  57 .globl memsetup
  58 memsetup:
  59         ldr     r0, MEM_BASE
  60
  61         /* Setup the flash memory */
  62         ldr     r1, msc0
  63         str     r1, [r0, #MSC0]
  64
  65         /* Set up the DRAM */
  66
  67         /* MDCAS0 */
  68         ldr     r1, mdcas0
  69         str     r1, [r0, #MDCAS0]
  70
  71         /* MDCAS1 */
  72         ldr     r1, mdcas1
  73         str     r1, [r0, #MDCAS1]
  74
  75         /* MDCAS2 */
  76         ldr     r1, mdcas2
  77         str     r1, [r0, #MDCAS2]
  78
  79         /* MDCNFG */
  80         ldr     r1, mdcnfg
  81         str     r1, [r0, #MDCNFG]
  82
  83         /* Set up PCMCIA space */
  84         ldr     r1, mecr
  85         str     r1, [r0, #MECR]
  86
  87         /* Load something to activate bank */
  88         ldr     r1, MEM_START
  89
  90 .rept   8
  91         ldr     r0, [r1]
  92 .endr
  93
  94         /* everything is fine now */
  95         mov     pc, lr
  96