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memory.h

/*
 * arch/arm/mach-sa1100/include/mach/memory.h
 *
 * Copyright (C) 1999-2000 Nicolas Pitre <nico@fluxnic.net>
 */

#ifndef __ASM_ARCH_MEMORY_H
#define __ASM_ARCH_MEMORY_H

#include <asm/sizes.h>

/*
 * Physical DRAM offset is 0xc0000000 on the SA1100
 */
#define PHYS_OFFSET     UL(0xc0000000)

#ifndef __ASSEMBLY__

#ifdef CONFIG_SA1111
void sa1111_adjust_zones(int node, unsigned long *size, unsigned long *holes);

#define arch_adjust_zones(node, size, holes) \
      sa1111_adjust_zones(node, size, holes)

#define ISA_DMA_THRESHOLD     (PHYS_OFFSET + SZ_1M - 1)
#define MAX_DMA_ADDRESS       (PAGE_OFFSET + SZ_1M)

#endif
#endif

/*
 * Because of the wide memory address space between physical RAM banks on the
 * SA1100, it's much convenient to use Linux's SparseMEM support to implement
 * our memory map representation.  Assuming all memory nodes have equal access
 * characteristics, we then have generic discontiguous memory support.
 *
 * The sparsemem banks are matched with the physical memory bank addresses
 * which are incidentally the same as virtual addresses.
 * 
 *    node 0:  0xc0000000 - 0xc7ffffff
 *    node 1:  0xc8000000 - 0xcfffffff
 *    node 2:  0xd0000000 - 0xd7ffffff
 *    node 3:  0xd8000000 - 0xdfffffff
 */
#define MAX_PHYSMEM_BITS      32
#define SECTION_SIZE_BITS     27

/*
 * Cache flushing area - SA1100 zero bank
 */
#define FLUSH_BASE_PHYS       0xe0000000
#define FLUSH_BASE            0xf5000000
#define FLUSH_BASE_MINICACHE  0xf5100000

#endif

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