d5788777bc
Currently, we always invalidate the TLBs entirely after making any modification to the page tables. Now that we have introduced strict memory permissions in quite a number of places, such modifications occur much more often, and it is better for performance to flush only those TLB entries that are actually affected by the changes. At the same time, relax some system wide data synchronization barriers to non-shared. When running in UEFI, we don't share virtual address translations with other masters, unless we are running under virt, but in that case, the host will upgrade them as appropriate (by setting an override at EL2) Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
74 lines
1.7 KiB
C
74 lines
1.7 KiB
C
/** @file
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Copyright (c) 2015 - 2016, Linaro Ltd. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#ifndef __ARM_MMU_LIB__
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#define __ARM_MMU_LIB__
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#include <Uefi/UefiBaseType.h>
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#include <Library/ArmLib.h>
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EFI_STATUS
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EFIAPI
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ArmConfigureMmu (
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IN ARM_MEMORY_REGION_DESCRIPTOR *MemoryTable,
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OUT VOID **TranslationTableBase OPTIONAL,
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OUT UINTN *TranslationTableSize OPTIONAL
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);
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EFI_STATUS
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EFIAPI
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ArmSetMemoryRegionNoExec (
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IN EFI_PHYSICAL_ADDRESS BaseAddress,
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IN UINT64 Length
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);
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EFI_STATUS
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EFIAPI
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ArmClearMemoryRegionNoExec (
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IN EFI_PHYSICAL_ADDRESS BaseAddress,
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IN UINT64 Length
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);
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EFI_STATUS
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EFIAPI
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ArmSetMemoryRegionReadOnly (
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IN EFI_PHYSICAL_ADDRESS BaseAddress,
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IN UINT64 Length
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);
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EFI_STATUS
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EFIAPI
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ArmClearMemoryRegionReadOnly (
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IN EFI_PHYSICAL_ADDRESS BaseAddress,
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IN UINT64 Length
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);
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VOID
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EFIAPI
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ArmReplaceLiveTranslationEntry (
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IN UINT64 *Entry,
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IN UINT64 Value,
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IN UINT64 RegionStart
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);
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EFI_STATUS
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ArmSetMemoryAttributes (
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IN EFI_PHYSICAL_ADDRESS BaseAddress,
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IN UINT64 Length,
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IN UINT64 Attributes
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);
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#endif
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