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/** @file
*
* Copyright (c) 2011-2017, ARM Limited. All rights reserved.
*
* This program and the accompanying materials
* are licensed and made available under the terms and conditions of the BSD License
* which accompanies this distribution. The full text of the license may be found at
* http://opensource.org/licenses/bsd-license.php
*
* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
*
**/
#include "PrePi.h"
#include <Chipset/AArch64.h>
VOID
ArchInitialize (
VOID
)
{
// Enable Floating Point
if (FixedPcdGet32 (PcdVFPEnabled)) {
ArmEnableVFP ();
}
if (ArmReadCurrentEL () == AARCH64_EL2) {
// Trap General Exceptions. All exceptions that would be routed to EL1 are routed to EL2
ArmWriteHcr (ARM_HCR_TGE);
/* Enable Timer access for non-secure EL1 and EL0
The cnthctl_el2 register bits are architecturally
UNKNOWN on reset.
Disable event stream as it is not in use at this stage
*/
ArmWriteCntHctl (CNTHCTL_EL2_EL1PCTEN | CNTHCTL_EL2_EL1PCEN);
}
}
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