1# 2# Copyright (c) 2011-2013, ARM Limited. All rights reserved. 3# 4# This program and the accompanying materials 5# are licensed and made available under the terms and conditions of the BSD License 6# which accompanies this distribution. The full text of the license may be found at 7# http://opensource.org/licenses/bsd-license.php 8# 9# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 10# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 11# 12# 13 14#include <AsmMacroIoLibV8.h> 15#include <Base.h> 16#include <Library/ArmLib.h> 17#include <Library/PcdLib.h> 18#include <AutoGen.h> 19 20.text 21.align 2 22 23GCC_ASM_EXPORT(ArmPlatformPeiBootAction) 24GCC_ASM_EXPORT(ArmPlatformIsPrimaryCore) 25GCC_ASM_EXPORT(ArmPlatformGetPrimaryCoreMpId) 26GCC_ASM_EXPORT(ArmPlatformGetCorePosition) 27GCC_ASM_EXPORT(ArmGetCpuCountPerCluster) 28 29GCC_ASM_IMPORT(_gPcd_FixedAtBuild_PcdArmPrimaryCore) 30GCC_ASM_IMPORT(_gPcd_FixedAtBuild_PcdArmPrimaryCoreMask) 31GCC_ASM_IMPORT(_gPcd_FixedAtBuild_PcdCoreCount) 32 33ASM_PFX(ArmPlatformPeiBootAction): 34 ret 35 36//UINTN 37//ArmPlatformGetPrimaryCoreMpId ( 38// VOID 39// ); 40ASM_PFX(ArmPlatformGetPrimaryCoreMpId): 41 LoadConstantToReg (_gPcd_FixedAtBuild_PcdArmPrimaryCore, x0) 42 ldrh w0, [x0] 43 ret 44 45# IN None 46# OUT x0 = number of cores present in the system 47ASM_PFX(ArmGetCpuCountPerCluster): 48 LoadConstantToReg (_gPcd_FixedAtBuild_PcdCoreCount, x0) 49 ldrh w0, [x0] 50 ret 51 52//UINTN 53//ArmPlatformIsPrimaryCore ( 54// IN UINTN MpId 55// ); 56ASM_PFX(ArmPlatformIsPrimaryCore): 57 LoadConstantToReg (_gPcd_FixedAtBuild_PcdArmPrimaryCoreMask, x1) 58 ldrh w1, [x1] 59 and x0, x0, x1 60 LoadConstantToReg (_gPcd_FixedAtBuild_PcdArmPrimaryCore, x1) 61 ldrh w1, [x1] 62 cmp w0, w1 63 b.ne 1f 64 mov x0, #1 65 ret 661: 67 mov x0, #0 68 ret 69 70//UINTN 71//ArmPlatformGetCorePosition ( 72// IN UINTN MpId 73// ); 74// With this function: CorePos = (ClusterId * 4) + CoreId 75ASM_PFX(ArmPlatformGetCorePosition): 76 and x1, x0, #ARM_CORE_MASK 77 and x0, x0, #ARM_CLUSTER_MASK 78 add x0, x1, x0, LSR #6 79 ret 80 81ASM_FUNCTION_REMOVE_IF_UNREFERENCED 82