/* * 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; }