1/* 2 * arch/arm/mach-shark/include/mach/memory.h 3 * 4 * by Alexander Schulz 5 * 6 * derived from: 7 * arch/arm/mach-ebsa110/include/mach/memory.h 8 * Copyright (c) 1996-1999 Russell King. 9 */ 10#ifndef __ASM_ARCH_MEMORY_H 11#define __ASM_ARCH_MEMORY_H 12 13#include <asm/sizes.h> 14 15/* 16 * Physical DRAM offset. 17 */ 18#define PHYS_OFFSET UL(0x08000000) 19 20#ifndef __ASSEMBLY__ 21 22static inline void __arch_adjust_zones(unsigned long *zone_size, unsigned long *zhole_size) 23{ 24 /* Only the first 4 MB (=1024 Pages) are usable for DMA */ 25 /* See dev / -> .properties in OpenFirmware. */ 26 zone_size[1] = zone_size[0] - 1024; 27 zone_size[0] = 1024; 28 zhole_size[1] = zhole_size[0]; 29 zhole_size[0] = 0; 30} 31 32#define arch_adjust_zones(size, holes) \ 33 __arch_adjust_zones(size, holes) 34 35#define ISA_DMA_THRESHOLD (PHYS_OFFSET + SZ_4M - 1) 36#define MAX_DMA_ADDRESS (PAGE_OFFSET + SZ_4M) 37 38#endif 39 40/* 41 * Cache flushing area 42 */ 43#define FLUSH_BASE_PHYS 0x80000000 44#define FLUSH_BASE 0xdf000000 45 46#endif 47