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/*
* Memory Setup stuff - taken from ???
*
* 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
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* 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>
/* some parameters for the board */
SYSCON1: .long 0x80000100
SYSCON2: .long 0x80001100
SYSCON3: .long 0x80002200
MEMCFG1: .long 0x80000180
MEMCFG2: .long 0x800001C0
SDCONF: .long 0x80002300
SDRFPR: .long 0x80002340
syscon1_val: .long 0x00040100
syscon2_val: .long 0x00000102
syscon3_val: .long 0x0000020E
memcfg1_val: .long 0x1f101710
memcfg2_mask: .long 0x0000ffff @ only set lower 16 bits
memcfg2_val: .long 0x00001f13 @ upper 16 bits are reserved for CS7 + CS6
sdrfpr_val: .long 0x00000240
sdconf_val: .long 0x00000522
/* setting up the memory */
.globl lowlevel_init
lowlevel_init:
/*
* SYSCON1-3
*/
ldr r0, SYSCON1
ldr r1, syscon1_val
str r1, [r0]
ldr r0, SYSCON2
ldr r1, syscon2_val
str r1, [r0]
ldr r0, SYSCON3
ldr r1, syscon3_val
str r1, [r0]
/*
* MEMCFG1
*/
ldr r0, MEMCFG1
ldr r1, memcfg1_val
str r1, [r0]
/*
* MEMCFG2
*/
ldr r0, MEMCFG2
ldr r2, [r0]
ldr r1, memcfg2_mask
bic r2, r2, r1
ldr r1, memcfg2_val
orr r2, r2, r1
str r2, [r0]
/*
* SDRFPR,SDCONF
*/
ldr r0, SDCONF
ldr r1, sdconf_val
str r1, [r0]
ldr r0, SDRFPR
ldr r1, sdrfpr_val
str r1, [r0]
/* everything is fine now */
mov pc, lr
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