Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/*
2 * linux/include/asm-arm/arch-shark/memory.h
3 *
4 * by Alexander Schulz
5 *
6 * derived from:
7 * linux/include/asm-arm/arch-ebsa110/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(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 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(node, size, holes) \
33 __arch_adjust_zones(node, size, holes)
34
35#define ISA_DMA_THRESHOLD (PHYS_OFFSET + SZ_4M - 1)
36
37#endif
38
39#define __virt_to_bus(x) __virt_to_phys(x)
40#define __bus_to_virt(x) __phys_to_virt(x)
41
42/*
43 * Cache flushing area
44 */
45#define FLUSH_BASE_PHYS 0x80000000
46#define FLUSH_BASE 0xdf000000
47
48#endif