2005-04-16 16:20:36 -06:00
|
|
|
/*
|
|
|
|
* linux/include/asm-arm/arch-ebsa285/memory.h
|
|
|
|
*
|
|
|
|
* Copyright (C) 1996-1999 Russell King.
|
|
|
|
*
|
|
|
|
* This program is free software; you can redistribute it and/or modify
|
|
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
|
|
* published by the Free Software Foundation.
|
|
|
|
*
|
|
|
|
* Changelog:
|
|
|
|
* 20-Oct-1996 RMK Created
|
|
|
|
* 31-Dec-1997 RMK Fixed definitions to reduce warnings.
|
|
|
|
* 17-May-1998 DAG Added __virt_to_bus and __bus_to_virt functions.
|
|
|
|
* 21-Nov-1998 RMK Changed __virt_to_bus and __bus_to_virt to macros.
|
|
|
|
* 21-Mar-1999 RMK Added PAGE_OFFSET for co285 architecture.
|
|
|
|
* Renamed to memory.h
|
|
|
|
* Moved PAGE_OFFSET and TASK_SIZE here
|
|
|
|
*/
|
|
|
|
#ifndef __ASM_ARCH_MEMORY_H
|
|
|
|
#define __ASM_ARCH_MEMORY_H
|
|
|
|
|
|
|
|
|
|
|
|
#if defined(CONFIG_FOOTBRIDGE_ADDIN)
|
|
|
|
/*
|
|
|
|
* If we may be using add-in footbridge mode, then we must
|
|
|
|
* use the out-of-line translation that makes use of the
|
|
|
|
* PCI BAR
|
|
|
|
*/
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
extern unsigned long __virt_to_bus(unsigned long);
|
|
|
|
extern unsigned long __bus_to_virt(unsigned long);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#elif defined(CONFIG_FOOTBRIDGE_HOST)
|
|
|
|
|
|
|
|
#define __virt_to_bus(x) ((x) - 0xe0000000)
|
|
|
|
#define __bus_to_virt(x) ((x) + 0xe0000000)
|
|
|
|
|
|
|
|
#else
|
|
|
|
|
|
|
|
#error "Undefined footbridge mode"
|
|
|
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#if defined(CONFIG_ARCH_FOOTBRIDGE)
|
|
|
|
|
|
|
|
/* Task size and page offset at 3GB */
|
2005-10-29 14:44:55 -06:00
|
|
|
#define TASK_SIZE UL(0xbf000000)
|
|
|
|
#define PAGE_OFFSET UL(0xc0000000)
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2006-04-04 14:47:43 -06:00
|
|
|
/*
|
|
|
|
* Cache flushing area.
|
|
|
|
*/
|
|
|
|
#define FLUSH_BASE 0xf9000000
|
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
#elif defined(CONFIG_ARCH_CO285)
|
|
|
|
|
|
|
|
/* Task size and page offset at 1.5GB */
|
2005-10-29 14:44:55 -06:00
|
|
|
#define TASK_SIZE UL(0x5f000000)
|
|
|
|
#define PAGE_OFFSET UL(0x60000000)
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2006-04-04 14:47:43 -06:00
|
|
|
/*
|
|
|
|
* Cache flushing area.
|
|
|
|
*/
|
|
|
|
#define FLUSH_BASE 0x7e000000
|
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
#else
|
|
|
|
|
|
|
|
#error "Undefined footbridge architecture"
|
|
|
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Physical DRAM offset.
|
|
|
|
*/
|
2005-10-29 14:44:55 -06:00
|
|
|
#define PHYS_OFFSET UL(0x00000000)
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/*
|
|
|
|
* This decides where the kernel will search for a free chunk of vm
|
|
|
|
* space during mmap's.
|
|
|
|
*/
|
|
|
|
#define TASK_UNMAPPED_BASE ((TASK_SIZE + 0x01000000) / 3)
|
|
|
|
|
2006-04-04 14:47:43 -06:00
|
|
|
#define FLUSH_BASE_PHYS 0x50000000
|
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
#endif
|