7cb6b0e068
Note: The Temporary RAM memory size is being reduced from
64KB to 32KB. This still appears to be more than
adequate for OVMF's early PEI phase. We will be adding
another 32KB range of RAM just above this range for
use on S3 resume.
The range is declared as part of MEMFD, so it is easier
to identify the memory range.
We also now assign PCDs to the memory range.
The PCDs are used to set the initial SEC/PEI stack in
SEC's assembly code.
The PCDs are also used in the SEC C code to setup
the Temporary RAM PPI.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15147 6f19259b-4bc3-4df7-8a09-765794883524
60 lines
1.8 KiB
ArmAsm
60 lines
1.8 KiB
ArmAsm
# TITLE SecEntry.asm
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#------------------------------------------------------------------------------
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#*
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#* Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>
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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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#* CpuAsm.asm
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#*
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#* Abstract:
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#*
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#------------------------------------------------------------------------------
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#include <Base.h>
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#EXTERN ASM_PFX(SecCoreStartupWithStack)
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#
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# SecCore Entry Point
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#
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# Processor is in flat protected mode
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#
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# @param[in] EAX Initial value of the EAX register (BIST: Built-in Self Test)
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# @param[in] DI 'BP': boot-strap processor, or 'AP': application processor
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# @param[in] EBP Pointer to the start of the Boot Firmware Volume
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#
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# @return None This routine does not return
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#
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ASM_GLOBAL ASM_PFX(_ModuleEntryPoint)
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ASM_PFX(_ModuleEntryPoint):
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#
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# Load temporary RAM stack based on PCDs
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#
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.set SEC_TOP_OF_STACK, FixedPcdGet32 (PcdOvmfSecPeiTempRamBase) + \
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FixedPcdGet32 (PcdOvmfSecPeiTempRamSize)
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movl $SEC_TOP_OF_STACK, %eax
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movl %eax, %esp
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nop
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#
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# Setup parameters and call SecCoreStartupWithStack
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# [esp] return address for call
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# [esp+4] BootFirmwareVolumePtr
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# [esp+8] TopOfCurrentStack
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#
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pushl %eax
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pushl %ebp
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call ASM_PFX(SecCoreStartupWithStack)
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#END
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