2 * PPC440SP/PPC440SPe system library
4 * Matt Porter <mporter@kernel.crashing.org>
5 * Copyright 2002-2005 MontaVista Software Inc.
7 * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
8 * Copyright (c) 2003, 2004 Zultys Technologies
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation; either version 2 of the License, or (at your
13 * option) any later version.
16 #include <linux/types.h>
17 #include <linux/serial.h>
19 #include <asm/param.h>
20 #include <asm/ibm44x.h>
22 #include <asm/machdep.h>
24 #include <asm/ppc4xx_pic.h>
27 * Read the 440SP memory controller to get size of system memory.
29 unsigned long __init ibm440sp_find_end_of_memory(void)
34 /* Read two bank sizes and sum */
35 for (i=0; i< MQ0_NUM_BANKS; i++)
36 switch (mfdcr(DCRN_MQ0_BS0BAS + i) & MQ0_CONFIG_SIZE_MASK) {
37 case MQ0_CONFIG_SIZE_8M:
38 mem_size += PPC44x_MEM_SIZE_8M;
40 case MQ0_CONFIG_SIZE_16M:
41 mem_size += PPC44x_MEM_SIZE_16M;
43 case MQ0_CONFIG_SIZE_32M:
44 mem_size += PPC44x_MEM_SIZE_32M;
46 case MQ0_CONFIG_SIZE_64M:
47 mem_size += PPC44x_MEM_SIZE_64M;
49 case MQ0_CONFIG_SIZE_128M:
50 mem_size += PPC44x_MEM_SIZE_128M;
52 case MQ0_CONFIG_SIZE_256M:
53 mem_size += PPC44x_MEM_SIZE_256M;
55 case MQ0_CONFIG_SIZE_512M:
56 mem_size += PPC44x_MEM_SIZE_512M;
58 case MQ0_CONFIG_SIZE_1G:
59 mem_size += PPC44x_MEM_SIZE_1G;
61 case MQ0_CONFIG_SIZE_2G:
62 mem_size += PPC44x_MEM_SIZE_2G;