| /* |
| * 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; |
| } |