blob: 571f8bcf78e6e1ddf34b2fba1cbb16fcea9845a1 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
/*
* 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/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;
}
|
