diff options
author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2008-10-01 16:03:21 -0400 |
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committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-10-01 16:03:21 -0400 |
commit | ee93916efe22f767628f9d25abb8ad8548797336 (patch) | |
tree | a9f96ac741d683738518a3deac59f73b331e81ca /arch/arm/mach-sa1100 | |
parent | 07f841b7c587a3cbf481509be09ba5eda05f8d31 (diff) |
[ARM] mm: switch SA1100 to use sparsemem
Tested on Assabet, and Assabet with Neponset's SDRAM at 3328M phys.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-sa1100')
-rw-r--r-- | arch/arm/mach-sa1100/include/mach/memory.h | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/arch/arm/mach-sa1100/include/mach/memory.h b/arch/arm/mach-sa1100/include/mach/memory.h index 29f639e2afc6..1c127b68581d 100644 --- a/arch/arm/mach-sa1100/include/mach/memory.h +++ b/arch/arm/mach-sa1100/include/mach/memory.h | |||
@@ -40,23 +40,21 @@ void sa1111_adjust_zones(int node, unsigned long *size, unsigned long *holes); | |||
40 | #define __bus_to_virt(x) __phys_to_virt(x) | 40 | #define __bus_to_virt(x) __phys_to_virt(x) |
41 | 41 | ||
42 | /* | 42 | /* |
43 | * Because of the wide memory address space between physical RAM banks on the | 43 | * Because of the wide memory address space between physical RAM banks on the |
44 | * SA1100, it's much convenient to use Linux's NUMA support to implement our | 44 | * SA1100, it's much convenient to use Linux's SparseMEM support to implement |
45 | * memory map representation. Assuming all memory nodes have equal access | 45 | * our memory map representation. Assuming all memory nodes have equal access |
46 | * characteristics, we then have generic discontiguous memory support. | 46 | * characteristics, we then have generic discontiguous memory support. |
47 | * | 47 | * |
48 | * Of course, all this isn't mandatory for SA1100 implementations with only | 48 | * The sparsemem banks are matched with the physical memory bank addresses |
49 | * one used memory bank. For those, simply undefine CONFIG_DISCONTIGMEM. | 49 | * which are incidentally the same as virtual addresses. |
50 | * | ||
51 | * The nodes are matched with the physical memory bank addresses which are | ||
52 | * incidentally the same as virtual addresses. | ||
53 | * | 50 | * |
54 | * node 0: 0xc0000000 - 0xc7ffffff | 51 | * node 0: 0xc0000000 - 0xc7ffffff |
55 | * node 1: 0xc8000000 - 0xcfffffff | 52 | * node 1: 0xc8000000 - 0xcfffffff |
56 | * node 2: 0xd0000000 - 0xd7ffffff | 53 | * node 2: 0xd0000000 - 0xd7ffffff |
57 | * node 3: 0xd8000000 - 0xdfffffff | 54 | * node 3: 0xd8000000 - 0xdfffffff |
58 | */ | 55 | */ |
59 | #define NODE_MEM_SIZE_BITS 27 | 56 | #define MAX_PHYSMEM_BITS 32 |
57 | #define SECTION_SIZE_BITS 27 | ||
60 | 58 | ||
61 | /* | 59 | /* |
62 | * Cache flushing area - SA1100 zero bank | 60 | * Cache flushing area - SA1100 zero bank |