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
22 static inline void __arch_adjust_zones(int node, unsigned long *zone_size, unsigned long *zhole_size)
23 {
24 if (node != 0) return;
25 /* Only the first 4 MB (=1024 Pages) are usable for DMA */
26 /* See dev / -> .properties in OpenFirmware. */
27 zone_size[1] = zone_size[0] - 1024;
28 zone_size[0] = 1024;
29 zhole_size[1] = zhole_size[0];
30 zhole_size[0] = 0;
31 }
32
33 #define arch_adjust_zones(node, size, holes) \
34 __arch_adjust_zones(node, size, holes)
35
36 #define ISA_DMA_THRESHOLD (PHYS_OFFSET + SZ_4M - 1)
37 #define MAX_DMA_ADDRESS (PAGE_OFFSET + SZ_4M)
38
39 #endif
40
41 /*
42 * Cache flushing area
43 */
44 #define FLUSH_BASE_PHYS 0x80000000
45 #define FLUSH_BASE 0xdf000000
46
47 #endif
48
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