u-boot/include/asm-ppc/config.h

/*
 * Copyright 2009 Freescale Semiconductor, Inc.
 *
 * 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.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 *
 */

#ifndef _ASM_CONFIG_H_
#define _ASM_CONFIG_H_

#ifndef CONFIG_MAX_MEM_MAPPED
#if defined(CONFIG_4xx) || defined(CONFIG_E500) || defined(CONFIG_MPC86xx)
#define CONFIG_MAX_MEM_MAPPED	((phys_size_t)2 << 30)
#else
#define CONFIG_MAX_MEM_MAPPED	(256 << 20)
#endif
#endif

/* Check if boards need to enable FSL DMA engine for SDRAM init */
#if !defined(CONFIG_FSL_DMA) && defined(CONFIG_DDR_ECC)
#if (defined(CONFIG_MPC83xx) && defined(CONFIG_DDR_ECC_INIT_VIA_DMA)) || \
	((defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)) && \
	!defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER))
#define CONFIG_FSL_DMA
#endif
#endif

#if defined(CONFIG_MPC8572) || defined(CONFIG_P1020) || \
	defined(CONFIG_P2020) || defined(CONFIG_MPC8641)
#define CONFIG_MAX_CPUS		2
#elif defined(CONFIG_PPC_P4080)
#define CONFIG_MAX_CPUS		8
#else
#define CONFIG_MAX_CPUS		1
#endif

#endif /* _ASM_CONFIG_H_ */