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91171b6b94
HCR_EL2 may contain fields that should be preserved (such as E2H, which may be RES1 for all intents and purposes other than reading back the register). So preserve the existing value when setting the TGE bit. Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
23 lines
428 B
C
23 lines
428 B
C
/** @file
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*
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* Copyright (c) 2011-2013, ARM Limited. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-2-Clause-Patent
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*
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**/
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#include "PrePi.h"
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#include <AArch64/AArch64.h>
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VOID
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ArchInitialize (
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VOID
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)
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{
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if (ArmReadCurrentEL () == AARCH64_EL2) {
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// Trap General Exceptions. All exceptions that would be routed to EL1 are routed to EL2
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ArmWriteHcr (ArmReadHcr () | ARM_HCR_TGE);
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}
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}
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