41 lines
1.1 KiB
C
41 lines
1.1 KiB
C
|
/*
|
||
|
|
* Copyright 2007 David Gibson, IBM Corporation.
|
||
|
|
*
|
||
|
|
* Based on earlier code:
|
||
|
|
* Matt Porter <mporter@kernel.crashing.org>
|
||
|
|
* Copyright 2002-2005 MontaVista Software Inc.
|
||
|
|
*
|
||
|
|
* Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
|
||
|
|
* Copyright (c) 2003, 2004 Zultys Technologies
|
||
|
|
*
|
||
|
|
* 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.
|
||
|
|
*/
|
||
|
|
#include <stddef.h>
|
||
|
|
#include "types.h"
|
||
|
|
#include "string.h"
|
||
|
|
#include "stdio.h"
|
||
|
|
#include "ops.h"
|
||
|
|
#include "reg.h"
|
||
|
|
#include "dcr.h"
|
||
|
|
|
||
|
|
/* Read the 44x memory controller to get size of system memory. */
|
||
|
|
void ibm44x_fixup_memsize(void)
|
||
|
|
{
|
||
|
|
int i;
|
||
|
|
unsigned long memsize, bank_config;
|
||
|
|
|
||
|
|
memsize = 0;
|
||
|
|
for (i = 0; i < ARRAY_SIZE(sdram_bxcr); i++) {
|
||
|
|
mtdcr(DCRN_SDRAM0_CFGADDR, sdram_bxcr[i]);
|
||
|
|
bank_config = mfdcr(DCRN_SDRAM0_CFGDATA);
|
||
|
|
|
||
|
|
if (bank_config & SDRAM_CONFIG_BANK_ENABLE)
|
||
|
|
memsize += SDRAM_CONFIG_BANK_SIZE(bank_config);
|
||
|
|
}
|
||
|
|
|
||
|
|
dt_fixup_memory(0, memsize);
|
||
|
|
}
|