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(ArmGetPhysAddrTop) 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//UINTN 46//ArmPlatformIsPrimaryCore ( 47// IN UINTN MpId 48// ); 49ASM_PFX(ArmPlatformIsPrimaryCore): 50 mov x0, #1 51 ret 52 53//UINTN 54//ArmPlatformGetCorePosition ( 55// IN UINTN MpId 56// ); 57// With this function: CorePos = (ClusterId * 4) + CoreId 58ASM_PFX(ArmPlatformGetCorePosition): 59 and x1, x0, #ARM_CORE_MASK 60 and x0, x0, #ARM_CLUSTER_MASK 61 add x0, x1, x0, LSR #6 62 ret 63 64//EFI_PHYSICAL_ADDRESS 65//GetPhysAddrTop ( 66// VOID 67// ); 68ASM_PFX(ArmGetPhysAddrTop): 69 mrs x0, id_aa64mmfr0_el1 70 adr x1, .LPARanges 71 and x0, x0, #7 72 ldrb w1, [x1, x0] 73 mov x0, #1 74 lsl x0, x0, x1 75 ret 76 77// 78// Bits 0..2 of the AA64MFR0_EL1 system register encode the size of the 79// physical address space support on this CPU: 80// 0 == 32 bits, 1 == 36 bits, etc etc 81// 6 and 7 are reserved 82// 83.LPARanges: 84 .byte 32, 36, 40, 42, 44, 48, -1, -1 85 86ASM_FUNCTION_REMOVE_IF_UNREFERENCED 87