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https://github.com/CloverHackyColor/CloverBootloader.git
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35 lines
783 B
C
35 lines
783 B
C
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/** @file
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Copyright (c) 2011-2017, ARM Limited. All rights reserved.
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include "PrePi.h"
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#include <Chipset/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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// Enable Floating Point
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if (FixedPcdGet32 (PcdVFPEnabled)) {
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ArmEnableVFP ();
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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 (ARM_HCR_TGE);
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/* Enable Timer access for non-secure EL1 and EL0
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The cnthctl_el2 register bits are architecturally
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UNKNOWN on reset.
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Disable event stream as it is not in use at this stage
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*/
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ArmWriteCntHctl (CNTHCTL_EL2_EL1PCTEN | CNTHCTL_EL2_EL1PCEN);
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}
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}
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