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31 lines
575 B
C
31 lines
575 B
C
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/** @file
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AsmEnableCache function
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Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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/**
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Perform a WBINVD and clear both the CD and NW bits of CR0.
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Enables the caches by executing a WBINVD instruction and then clear both the CD and NW
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bits of CR0 to 0. This function is only available on IA-32 and x64.
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**/
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VOID
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EFIAPI
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AsmEnableCache (
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VOID
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)
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{
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_asm {
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wbinvd
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mov eax, cr0
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btr eax, 30
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btr eax, 29
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mov cr0, eax
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}
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}
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