f09b997999
Patch from Nicolas Pitre This patch allows for assorted type of cleanups by letting assembly code use the same set of defines for constant values and avoid duplicated definitions that might not always be in sync, or that might simply be confusing due to the different names for the same thing. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
76 lines
1.8 KiB
C
76 lines
1.8 KiB
C
/*
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* linux/include/asm-arm/arch-ebsa285/memory.h
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*
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* Copyright (C) 1996-1999 Russell King.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* Changelog:
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* 20-Oct-1996 RMK Created
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* 31-Dec-1997 RMK Fixed definitions to reduce warnings.
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* 17-May-1998 DAG Added __virt_to_bus and __bus_to_virt functions.
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* 21-Nov-1998 RMK Changed __virt_to_bus and __bus_to_virt to macros.
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* 21-Mar-1999 RMK Added PAGE_OFFSET for co285 architecture.
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* Renamed to memory.h
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* Moved PAGE_OFFSET and TASK_SIZE here
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*/
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#ifndef __ASM_ARCH_MEMORY_H
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#define __ASM_ARCH_MEMORY_H
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#include <linux/config.h>
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#if defined(CONFIG_FOOTBRIDGE_ADDIN)
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/*
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* If we may be using add-in footbridge mode, then we must
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* use the out-of-line translation that makes use of the
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* PCI BAR
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*/
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#ifndef __ASSEMBLY__
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extern unsigned long __virt_to_bus(unsigned long);
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extern unsigned long __bus_to_virt(unsigned long);
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#endif
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#elif defined(CONFIG_FOOTBRIDGE_HOST)
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#define __virt_to_bus(x) ((x) - 0xe0000000)
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#define __bus_to_virt(x) ((x) + 0xe0000000)
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#else
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#error "Undefined footbridge mode"
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#endif
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#if defined(CONFIG_ARCH_FOOTBRIDGE)
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/* Task size and page offset at 3GB */
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#define TASK_SIZE UL(0xbf000000)
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#define PAGE_OFFSET UL(0xc0000000)
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#elif defined(CONFIG_ARCH_CO285)
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/* Task size and page offset at 1.5GB */
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#define TASK_SIZE UL(0x5f000000)
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#define PAGE_OFFSET UL(0x60000000)
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#else
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#error "Undefined footbridge architecture"
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#endif
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/*
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* Physical DRAM offset.
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*/
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#define PHYS_OFFSET UL(0x00000000)
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/*
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* This decides where the kernel will search for a free chunk of vm
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* space during mmap's.
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*/
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#define TASK_UNMAPPED_BASE ((TASK_SIZE + 0x01000000) / 3)
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#endif
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