1/* 2 * linux/include/asm-arm/arch-pxa/memory.h 3 * 4 * Author: Nicolas Pitre 5 * Copyright: (C) 2001 MontaVista Software Inc. 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 as 9 * published by the Free Software Foundation. 10 */ 11 12#ifndef __ASM_ARCH_MEMORY_H 13#define __ASM_ARCH_MEMORY_H 14 15/* 16 * Physical DRAM offset. 17 */ 18#define PHYS_OFFSET UL(0xa0000000) 19 20/* 21 * Virtual view <-> DMA view memory address translations 22 * virt_to_bus: Used to translate the virtual address to an 23 * address suitable to be passed to set_dma_addr 24 * bus_to_virt: Used to convert an address for DMA operations 25 * to an address that the kernel can use. 26 */ 27#define __virt_to_bus(x) __virt_to_phys(x) 28#define __bus_to_virt(x) __phys_to_virt(x) 29 30/* 31 * The nodes are matched with the physical SDRAM banks as follows: 32 * 33 * node 0: 0xa0000000-0xa3ffffff --> 0xc0000000-0xc3ffffff 34 * node 1: 0xa4000000-0xa7ffffff --> 0xc4000000-0xc7ffffff 35 * node 2: 0xa8000000-0xabffffff --> 0xc8000000-0xcbffffff 36 * node 3: 0xac000000-0xafffffff --> 0xcc000000-0xcfffffff 37 * 38 * This needs a node mem size of 26 bits. 39 */ 40#define NODE_MEM_SIZE_BITS 26 41 42#endif 43