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- /*
- * linux/include/asm-arm/arch-sa1100/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 NUMA support to implement our
- * memory map representation. Assuming all memory nodes have equal access
- * characteristics, we then have generic discontiguous memory support.
- *
- * Of course, all this isn't mandatory for SA1100 implementations with only
- * one used memory bank. For those, simply undefine CONFIG_DISCONTIGMEM.
- *
- * The nodes 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 NODE_MEM_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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