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| author | Deepa Dinamani <deepad@codeaurora.org> | 2015-01-28 14:15:56 -0800 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2015-04-22 08:58:48 +0200 |
| commit | e1977482638f71904cecb5b251ee687107acdce4 (patch) | |
| tree | b50514fb5692173c485dfa5a294fefd100da0a22 /src/arch/arm/include | |
| parent | ed84a8f5406e35a6f5c88ac30ee003e62f264a14 (diff) | |
| download | coreboot-e1977482638f71904cecb5b251ee687107acdce4.tar.xz | |
arch/armv7: Add API to disable MMU pages.
Disables 4K regions in the MMU table.
Assumes that the region is already accounted for by the first level page table entry.
BRANCH=storm
BUG=chrome-os-partner:24786
TEST=verified mmu.pagetable.list output for Storm:
_______address___________|_physical________________|sec|_d_|_size____|_permissions____________________|_glb|_shr|_pageflags______________________|
C:00000000--00000FFF| | | | | | | | |
C:00001000--000FFFFF| A:00:00001000--000FFFFF| ns| 00| 00001000| P:readwrite U:readwrite notexec| yes| no | strongly ordered |
C:00100000--29FFFFFF| A:00:00100000--29FFFFFF| ns| 00| 00100000| P:readwrite U:readwrite notexec| yes| no | strongly ordered |
C:2A000000--2A05FFFF| A:00:2A000000--2A05FFFF| ns| 00| 00001000| P:readwrite U:readwrite exec | yes| no | write-back/no write alloc |
C:2A060000--2A0FFFFF| A:00:2A060000--2A0FFFFF| ns| 00| 00001000| P:readwrite U:readwrite notexec| yes| no | strongly ordered |
C:2A100000--3FFFFFFF| A:00:2A100000--3FFFFFFF| ns| 00| 00100000| P:readwrite U:readwrite notexec| yes| no | strongly ordered |
C:40000000--59FFFFFF| A:00:40000000--59FFFFFF| ns| 00| 00100000| P:readwrite U:readwrite exec | yes| no | write-back/no write alloc |
C:5A000000--5A1FFFFF| A:00:5A000000--5A1FFFFF| ns| 00| 00100000| P:readwrite U:readwrite notexec| yes| no | strongly ordered |
C:5A200000--7FFFFFFF| A:00:5A200000--7FFFFFFF| ns| 00| 00100000| P:readwrite U:readwrite exec | yes| no | write-back/no write alloc |
C:80000000--FFFFFFFF| | | | | | | | |
Change-Id: Ib603da91966cc4c70ea9d5fee04f1e9890d0bb93
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 67db80e6476d8ed35f0a9d1e0d3ca03612b9d9be
Original-Change-Id: I6b149c7edbd975231b783cc53ddb63cf2e94052c
Original-Signed-off-by: Vikas Das <vdas@codeaurora.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/253800
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Original-Tested-by: Deepa Dinamani <deepad@codeaurora.org>
Original-Commit-Queue: Deepa Dinamani <deepad@codeaurora.org>
Reviewed-on: http://review.coreboot.org/9912
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src/arch/arm/include')
| -rw-r--r-- | src/arch/arm/include/armv7/arch/cache.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/arch/arm/include/armv7/arch/cache.h b/src/arch/arm/include/armv7/arch/cache.h index 12df5c309f..df44c47f21 100644 --- a/src/arch/arm/include/armv7/arch/cache.h +++ b/src/arch/arm/include/armv7/arch/cache.h @@ -1,6 +1,7 @@ /* * This file is part of the coreboot project. * + * Copyright (c) 2015, The Linux Foundation. All rights reserved. * Copyright 2013 Google Inc. * * Redistribution and use in source and binary forms, with or without @@ -402,5 +403,6 @@ void mmu_config_range(u32 start_mb, u32 size_mb, enum dcache_policy policy); * Careful: Do NOT map over this address range with mmu_config_range() again * later, or you will leak resources and may desync your TLB! */ void mmu_config_range_kb(u32 start_kb, u32 size_kb, enum dcache_policy policy); +void mmu_disable_range_kb(u32 start_kb, u32 size_kb); #endif /* ARM_CACHE_H */ |