86 lines
1.9 KiB
C
86 lines
1.9 KiB
C
/*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*
|
|
* Copyright (C) 1994 - 1999, 2000, 03, 04 Ralf Baechle
|
|
* Copyright (C) 2000, 2002 Maciej W. Rozycki
|
|
* Copyright (C) 1990, 1999, 2000 Silicon Graphics, Inc.
|
|
*/
|
|
#ifndef _ASM_MACH_GENERIC_SPACES_H
|
|
#define _ASM_MACH_GENERIC_SPACES_H
|
|
|
|
#include <linux/const.h>
|
|
|
|
/*
|
|
* This gives the physical RAM offset.
|
|
*/
|
|
#ifndef PHYS_OFFSET
|
|
#define PHYS_OFFSET _AC(0, UL)
|
|
#endif
|
|
|
|
#ifdef CONFIG_32BIT
|
|
|
|
#define CAC_BASE _AC(0x80000000, UL)
|
|
#define IO_BASE _AC(0xa0000000, UL)
|
|
#define UNCAC_BASE _AC(0xa0000000, UL)
|
|
|
|
#ifndef MAP_BASE
|
|
#define MAP_BASE _AC(0xc0000000, UL)
|
|
#endif
|
|
|
|
/*
|
|
* Memory above this physical address will be considered highmem.
|
|
*/
|
|
#ifndef HIGHMEM_START
|
|
#define HIGHMEM_START _AC(0x20000000, UL)
|
|
#endif
|
|
|
|
#endif /* CONFIG_32BIT */
|
|
|
|
#ifdef CONFIG_64BIT
|
|
|
|
#ifndef CAC_BASE
|
|
#ifdef CONFIG_DMA_NONCOHERENT
|
|
#define CAC_BASE _AC(0x9800000000000000, UL)
|
|
#else
|
|
#define CAC_BASE _AC(0xa800000000000000, UL)
|
|
#endif
|
|
#endif
|
|
|
|
#ifndef IO_BASE
|
|
#define IO_BASE _AC(0x9000000000000000, UL)
|
|
#endif
|
|
|
|
#ifndef UNCAC_BASE
|
|
#define UNCAC_BASE _AC(0x9000000000000000, UL)
|
|
#endif
|
|
|
|
#ifndef MAP_BASE
|
|
#define MAP_BASE _AC(0xc000000000000000, UL)
|
|
#endif
|
|
|
|
/*
|
|
* Memory above this physical address will be considered highmem.
|
|
* Fixme: 59 bits is a fictive number and makes assumptions about processors
|
|
* in the distant future. Nobody will care for a few years :-)
|
|
*/
|
|
#ifndef HIGHMEM_START
|
|
#define HIGHMEM_START (_AC(1, UL) << _AC(59, UL))
|
|
#endif
|
|
|
|
#define TO_PHYS(x) ( ((x) & TO_PHYS_MASK))
|
|
#define TO_CAC(x) (CAC_BASE | ((x) & TO_PHYS_MASK))
|
|
#define TO_UNCAC(x) (UNCAC_BASE | ((x) & TO_PHYS_MASK))
|
|
|
|
#endif /* CONFIG_64BIT */
|
|
|
|
/*
|
|
* This handles the memory map.
|
|
*/
|
|
#ifndef PAGE_OFFSET
|
|
#define PAGE_OFFSET (CAC_BASE + PHYS_OFFSET)
|
|
#endif
|
|
|
|
#endif /* __ASM_MACH_GENERIC_SPACES_H */
|