1/* 2 * linux/include/asm-arm/arch-l7200/memory.h 3 * 4 * Copyright (c) 2000 Steve Hill (sjhill@cotw.com) 5 * Copyright (c) 2000 Rob Scott (rscott@mtrob.fdns.net) 6 * 7 * Changelog: 8 * 03-13-2000 SJH Created 9 * 04-13-2000 RS Changed bus macros for new addr 10 * 05-03-2000 SJH Removed bus macros and fixed virt_to_phys macro 11 */ 12#ifndef __ASM_ARCH_MEMORY_H 13#define __ASM_ARCH_MEMORY_H 14 15/* 16 * Task size: 3GB 17 */ 18#define TASK_SIZE (0xc0000000UL) 19#define TASK_SIZE_26 (0x04000000UL) 20 21/* 22 * This decides where the kernel will search for a free chunk of vm 23 * space during mmap's. 24 */ 25#define TASK_UNMAPPED_BASE (TASK_SIZE / 3) 26 27/* 28 * Page offset: 3GB 29 */ 30#define PAGE_OFFSET (0xc0000000UL) 31 32/* 33 * Physical DRAM offset on the L7200 SDB. 34 */ 35#define PHYS_OFFSET (0xf0000000UL) 36 37/* 38 * The DRAM is contiguous. 39 */ 40#define __virt_to_phys__is_a_macro 41#define __virt_to_phys(vpage) ((vpage) - PAGE_OFFSET + PHYS_OFFSET) 42#define __phys_to_virt__is_a_macro 43#define __phys_to_virt(ppage) ((ppage) + PAGE_OFFSET - PHYS_OFFSET) 44 45#define __virt_to_bus__is_a_macro 46#define __virt_to_bus(x) __virt_to_phys(x) 47#define __bus_to_virt__is_a_macro 48#define __bus_to_virt(x) __phys_to_virt(x) 49 50#define PHYS_TO_NID(addr) (0) 51 52#endif 53