diff options
Diffstat (limited to 'ArmPlatformPkg/PrePeiCore/PrePeiCoreEntryPoint.S')
| -rw-r--r-- | ArmPlatformPkg/PrePeiCore/PrePeiCoreEntryPoint.S | 33 |
1 files changed, 20 insertions, 13 deletions
diff --git a/ArmPlatformPkg/PrePeiCore/PrePeiCoreEntryPoint.S b/ArmPlatformPkg/PrePeiCore/PrePeiCoreEntryPoint.S index 53c16ccb6f..ffa4a46da9 100644 --- a/ArmPlatformPkg/PrePeiCore/PrePeiCoreEntryPoint.S +++ b/ArmPlatformPkg/PrePeiCore/PrePeiCoreEntryPoint.S @@ -1,22 +1,21 @@ // // Copyright (c) 2011, 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. -# -# +// 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 <AsmMacroIoLib.h> #include <Base.h> #include <Library/PcdLib.h> #include <AutoGen.h> -#start of the code section .text .align 3 @@ -45,9 +44,17 @@ _SetupStack: add r3,r3,r2,LSR #1 @ r3 = stack_offset + (stack_size/2) <-- the top half is for the heap mov sp, r3 - # lr points to area in reset vector block containing PEI core address. lr needs to - # be saved from the beginning as the _ModuleEntryPoint could call helper functions - # that will overwrite 'lr' + # Only allocate memory in top of the primary core stack + cmp r0, #0 + bne _PrepareArguments + +_AllocateGlobalPeiVariables: + # Reserve top of the stack for Global PEI Variables (eg: PeiServicesTablePointer) + LoadConstantToReg (FixedPcdGet32(PcdPeiGlobalVariableSize), r1) + sub sp, sp, r1 + +_PrepareArguments: + # The PEI Core Entry Point has been computed by GenFV and stored in the second entry of the Reset Vector LoadConstantToReg (FixedPcdGet32(PcdNormalFdBaseAddress), r2) add r2, r2, #4 ldr r1, [r2] |