blob: 56ea0dd9284fd7fb22b921c5511d3ce94b22040d [file] [log] [blame]
* Memory Setup stuff - taken from blob memsetup.S
* Copyright (C) 1999 2000 2001 Erik Mouw ( and
* Jan-Derk Bakker (
* 2004 (c) MontaVista Software, Inc.
* See file CREDITS for list of people who contributed to this
* project.
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
#include "config.h"
#include "version.h"
* Board defines:
#define MDCNFG 0x00
#define MDCAS00 0x04
#define MDCAS01 0x08
#define MDCAS02 0x0C
#define MSC0 0x10
#define MSC1 0x14
#define MECR 0x18
#define MDREFR 0x1C
#define MDCAS20 0x20
#define MDCAS21 0x24
#define MDCAS22 0x28
#define MSC2 0x2C
#define SMCNFG 0x30
#define ASSABET_BCR (0x12000000)
#define ASSABET_BCR_DB1110 (0x00a07490 | (0<<16) | (0<<17))
#define ASSABET_SCR_nNEPONSET (1 << 9)
#define NEPONSET_LEDS (0x10000010)
* Setup parameters for the board:
MEM_BASE: .long 0xa0000000
MEM_START: .long 0xc0000000
mdcnfg: .long 0x72547254
mdcas00: .long 0xaaaaaa7f
mdcas01: .long 0xaaaaaaaa
mdcas02: .long 0xaaaaaaaa
msc0: .long 0x4b384370
msc1: .long 0x22212419
mecr: .long 0x994a994a
mdrefr: .long 0x04340327
mdcas20: .long 0xaaaaaa7f
mdcas21: .long 0xaaaaaaaa
mdcas22: .long 0xaaaaaaaa
msc2: .long 0x42196669
smcnfg: .long 0x00000000
BCR_DB1110: .long ASSABET_BCR_DB1110
.globl lowlevel_init
/* Setting up the memory and stuff */
ldr r0, MEM_BASE
ldr r1, mdcas00
str r1, [r0, #MDCAS00]
ldr r1, mdcas01
str r1, [r0, #MDCAS01]
ldr r1, mdcas02
str r1, [r0, #MDCAS02]
ldr r1, mdcas20
str r1, [r0, #MDCAS20]
ldr r1, mdcas21
str r1, [r0, #MDCAS21]
ldr r1, mdcas22
str r1, [r0, #MDCAS22]
ldr r1, mdrefr
str r1, [r0, #MDREFR]
ldr r1, mecr
str r1, [r0, #MECR]
ldr r1, msc0
str r1, [r0, #MSC0]
ldr r1, msc1
str r1, [r0, #MSC1]
ldr r1, msc2
str r1, [r0, #MSC2]
ldr r1, smcnfg
str r1, [r0, #SMCNFG]
ldr r1, mdcnfg
str r1, [r0, #MDCNFG]
/* Load something to activate bank */
ldr r2, MEM_START
.rept 8
ldr r3, [r2]
/* Enable SDRAM */
orr r1, r1, #0x00000001
str r1, [r0, #MDCNFG]
ldr r1, BCR
ldr r2, BCR_DB1110
str r2, [r1]
ldr r1, LEDS
mov r0, #0x3
str r0, [r1]
/* All done... */
mov pc, lr