1 /* SPDX-License-Identifier: GPL-2.0 */
3 * arch/arm/mach-sa1100/include/mach/memory.h
5 * Copyright (C) 1999-2000 Nicolas Pitre <nico@fluxnic.net>
8 #ifndef __ASM_ARCH_MEMORY_H
9 #define __ASM_ARCH_MEMORY_H
11 #include <asm/sizes.h>
14 * Because of the wide memory address space between physical RAM banks on the
15 * SA1100, it's much convenient to use Linux's SparseMEM support to implement
16 * our memory map representation. Assuming all memory nodes have equal access
17 * characteristics, we then have generic discontiguous memory support.
19 * The sparsemem banks are matched with the physical memory bank addresses
20 * which are incidentally the same as virtual addresses.
22 * node 0: 0xc0000000 - 0xc7ffffff
23 * node 1: 0xc8000000 - 0xcfffffff
24 * node 2: 0xd0000000 - 0xd7ffffff
25 * node 3: 0xd8000000 - 0xdfffffff
27 #define MAX_PHYSMEM_BITS 32
28 #define SECTION_SIZE_BITS 27
31 * Cache flushing area - SA1100 zero bank
33 #define FLUSH_BASE_PHYS 0xe0000000
34 #define FLUSH_BASE 0xf5000000
35 #define FLUSH_BASE_MINICACHE 0xf5100000