2ef2b01e07
ArmPkg - Supoprt for ARM specific things that can change as the architecture changes. Plus semihosting JTAG drivers. EmbeddedPkg - Generic support for an embeddded platform. Including a light weight command line shell. BeagleBoardPkg - Platform specifics for BeagleBoard. SD Card works, but USB has issues. Looks like a bug in the open source USB stack (Our internal stack works fine). git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9518 6f19259b-4bc3-4df7-8a09-765794883524
130 lines
2.8 KiB
C
130 lines
2.8 KiB
C
/** @file
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Copyright (c) 2008-2009, Apple Inc. All rights reserved.
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All rights reserved. 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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#include <Base.h>
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#include <Library/ArmLib.h>
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#include <Library/PcdLib.h>
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VOID
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CacheRangeOperation (
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IN VOID *Start,
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IN UINTN Length,
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IN CACHE_OPERATION CacheOperation,
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IN LINE_OPERATION LineOperation
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)
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{
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UINTN ArmCacheLineLength = ArmDataCacheLineLength();
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UINTN ArmCacheLineAlignmentMask = ArmCacheLineLength - 1;
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UINTN ArmCacheOperationThreshold = PcdGet32(PcdArmCacheOperationThreshold);
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if ((CacheOperation != NULL) && (Length >= ArmCacheOperationThreshold))
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{
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CacheOperation();
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}
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else
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{
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// Align address (rounding down)
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UINTN AlignedAddress = (UINTN)Start - ((UINTN)Start & ArmCacheLineAlignmentMask);
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UINTN EndAddress = (UINTN)Start + Length;
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// Perform the line operation on an address in each cache line
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while (AlignedAddress < EndAddress)
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{
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LineOperation(AlignedAddress);
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AlignedAddress += ArmCacheLineLength;
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}
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}
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}
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VOID
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EFIAPI
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InvalidateInstructionCache (
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VOID
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)
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{
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ArmCleanDataCache();
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ArmInvalidateInstructionCache();
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}
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VOID
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EFIAPI
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InvalidateDataCache (
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VOID
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)
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{
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ArmInvalidateDataCache();
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}
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VOID *
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EFIAPI
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InvalidateInstructionCacheRange (
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IN VOID *Address,
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IN UINTN Length
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)
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{
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CacheRangeOperation(Address, Length, ArmCleanDataCache, ArmCleanDataCacheEntryByMVA);
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ArmInvalidateInstructionCache();
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return Address;
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}
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VOID
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EFIAPI
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WriteBackInvalidateDataCache (
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VOID
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)
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{
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ArmCleanInvalidateDataCache();
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}
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VOID *
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EFIAPI
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WriteBackInvalidateDataCacheRange (
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IN VOID *Address,
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IN UINTN Length
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)
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{
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CacheRangeOperation(Address, Length, ArmCleanInvalidateDataCache, ArmCleanInvalidateDataCacheEntryByMVA);
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return Address;
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}
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VOID
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EFIAPI
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WriteBackDataCache (
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VOID
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)
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{
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ArmCleanDataCache();
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}
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VOID *
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EFIAPI
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WriteBackDataCacheRange (
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IN VOID *Address,
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IN UINTN Length
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)
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{
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CacheRangeOperation(Address, Length, ArmCleanDataCache, ArmCleanDataCacheEntryByMVA);
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return Address;
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}
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VOID *
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EFIAPI
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InvalidateDataCacheRange (
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IN VOID *Address,
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IN UINTN Length
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)
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{
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CacheRangeOperation(Address, Length, NULL, ArmInvalidateDataCacheEntryByMVA);
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return Address;
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}
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