blob: 1c127b68581d6e2ef2ec2be79792d0f4e63a1785 (
plain) (
tree)
|
|
/*
* arch/arm/mach-sa1100/include/mach/memory.h
*
* Copyright (C) 1999-2000 Nicolas Pitre <nico@cam.org>
*/
#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)
#endif
#endif
/*
* Virtual view <-> DMA view memory address translations
* virt_to_bus: Used to translate the virtual address to an
* address suitable to be passed to set_dma_addr
* bus_to_virt: Used to convert an address for DMA operations
* to an address that the kernel can use.
*
* On the SA1100, bus addresses are equivalent to physical addresses.
*/
#define __virt_to_bus(x) __virt_to_phys(x)
#define __bus_to_virt(x) __phys_to_virt(x)
/*
* 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
|
