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/*
* arch/ppc/syslib/ibm440sp_common.c
*
* PPC440SP system library
*
* 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 <linux/config.h>
#include <linux/types.h>
#include <linux/serial.h>
#include <asm/param.h>
#include <asm/ibm44x.h>
#include <asm/mmu.h>
#include <asm/machdep.h>
#include <asm/time.h>
#include <asm/ppc4xx_pic.h>
/*
* Read the 440SP memory controller to get size of system memory.
*/
unsigned long __init ibm440sp_find_end_of_memory(void)
{
u32 i;
u32 mem_size = 0;
/* Read two bank sizes and sum */
for (i=0; i<2; i++)
switch (mfdcr(DCRN_MQ0_BS0BAS + i) & MQ0_CONFIG_SIZE_MASK) {
case MQ0_CONFIG_SIZE_8M:
mem_size += PPC44x_MEM_SIZE_8M;
break;
case MQ0_CONFIG_SIZE_16M:
mem_size += PPC44x_MEM_SIZE_16M;
break;
case MQ0_CONFIG_SIZE_32M:
mem_size += PPC44x_MEM_SIZE_32M;
break;
case MQ0_CONFIG_SIZE_64M:
mem_size += PPC44x_MEM_SIZE_64M;
break;
case MQ0_CONFIG_SIZE_128M:
mem_size += PPC44x_MEM_SIZE_128M;
break;
case MQ0_CONFIG_SIZE_256M:
mem_size += PPC44x_MEM_SIZE_256M;
break;
case MQ0_CONFIG_SIZE_512M:
mem_size += PPC44x_MEM_SIZE_512M;
break;
case MQ0_CONFIG_SIZE_1G:
mem_size += PPC44x_MEM_SIZE_1G;
break;
case MQ0_CONFIG_SIZE_2G:
mem_size += PPC44x_MEM_SIZE_2G;
break;
default:
break;
}
return mem_size;
}
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