mirror of https://github.com/acidanthera/audk.git
76 lines
1.8 KiB
ArmAsm
76 lines
1.8 KiB
ArmAsm
/** @file
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*
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* Copyright (c) 2013-2014, ARM Limited. All rights reserved.
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*
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* 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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*
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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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**/
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#include <AsmMacroIoLibV8.h>
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#include <Library/ArmLib.h>
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.text
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.align 3
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GCC_ASM_EXPORT(ArmPlatformPeiBootAction)
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GCC_ASM_EXPORT(ArmPlatformGetCorePosition)
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GCC_ASM_EXPORT(ArmPlatformGetPrimaryCoreMpId)
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GCC_ASM_EXPORT(ArmPlatformIsPrimaryCore)
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GCC_ASM_IMPORT(_gPcd_FixedAtBuild_PcdArmPrimaryCoreMask)
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PrimaryCoreMpid: .word 0x0
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//UINTN
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//ArmPlatformGetCorePosition (
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// IN UINTN MpId
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// );
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// With this function: CorePos = (ClusterId * 2) + CoreId
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ASM_PFX(ArmPlatformGetCorePosition):
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and x1, x0, #ARM_CORE_MASK
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and x0, x0, #ARM_CLUSTER_MASK
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add x0, x1, x0, LSR #7
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ret
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//UINTN
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//ArmPlatformGetPrimaryCoreMpId (
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// VOID
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// );
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ASM_PFX(ArmPlatformGetPrimaryCoreMpId):
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ldr x0, =PrimaryCoreMpid
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ldrh w0, [x0]
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ret
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//UINTN
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//ArmPlatformIsPrimaryCore (
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// IN UINTN MpId
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// );
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ASM_PFX(ArmPlatformIsPrimaryCore):
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LoadConstantToReg (_gPcd_FixedAtBuild_PcdArmPrimaryCoreMask, x1)
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ldrh w1, [x1]
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and x0, x0, x1
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ldr x1, =PrimaryCoreMpid
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ldrh w1, [x1]
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cmp w0, w1
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mov x0, #1
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mov x1, #0
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csel x0, x0, x1, eq
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ret
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ASM_PFX(ArmPlatformPeiBootAction):
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// The trusted firmware passes the primary CPU MPID through x0 register.
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// Save it in a variable.
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ldr x1, =PrimaryCoreMpid
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str w0, [x1]
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ret
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