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 #endif 45