1/* 2 * linux/include/asm-arm/arch-tbox/memory.h 3 * 4 * Copyright (c) 1996-1999 Russell King. 5 * Copyright (c) 1998-1999 Phil Blundell 6 */ 7#ifndef __ASM_ARCH_MEMORY_H 8#define __ASM_ARCH_MEMORY_H 9 10/* 11 * Task size: 3GB 12 */ 13#define TASK_SIZE (0xc0000000UL) 14#define TASK_SIZE_26 (0x04000000UL) 15 16/* 17 * This decides where the kernel will search for a free chunk of vm 18 * space during mmap's. 19 */ 20#define TASK_UNMAPPED_BASE (TASK_SIZE / 3) 21 22/* 23 * Page offset: 3GB 24 */ 25#define PAGE_OFFSET (0xc0000000UL) 26#define PHYS_OFFSET (0x80000000UL) 27 28/* 29 * DRAM is contiguous 30 */ 31#define __virt_to_phys(vpage) ((vpage) - PAGE_OFFSET + PHYS_OFFSET) 32#define __phys_to_virt(ppage) ((ppage) + PAGE_OFFSET - PHYS_OFFSET) 33#define __virt_to_phys__is_a_macro 34#define __phys_to_virt__is_a_macro 35 36/* 37 * Bus view is the same as physical view 38 */ 39#define __virt_to_bus__is_a_macro 40#define __virt_to_bus(x) __virt_to_phys(x) 41#define __bus_to_virt__is_a_macro 42#define __bus_to_virt(x) __phys_to_virt(x) 43 44#define PHYS_TO_NID(addr) (0) 45 46#endif 47