70 lines
1.7 KiB
C
70 lines
1.7 KiB
C
/*
|
|
* PPC440SP/PPC440SPe 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< MQ0_NUM_BANKS; 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;
|
|
}
|