f0abe42fd7
Fix GCC issue on FspInfoHeaderRelativeOff. Clean up comments for platform ID matching on Microcode and PcdFspBootFirmwareVolumeBase Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: "Yao, Jiewen" <Jiewen.Yao@intel.com> Reviewed-by: "Rangarajan, Ravi P" <ravi.p.rangarajan@intel.com> Reviewed-by: "Mudusuru, Giri P" <giri.p.mudusuru@intel.com> Reviewed-by: "Ma, Maurice" <maurice.ma@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17496 6f19259b-4bc3-4df7-8a09-765794883524
73 lines
2.2 KiB
NASM
73 lines
2.2 KiB
NASM
;; @file
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; Provide FSP helper function.
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;
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; Copyright (c) 2015, 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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.586p
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.model flat,C
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.code
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;
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; FspInfoHeaderRelativeOff is patched during build process and initialized to offset of the AsmGetFspBaseAddress
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; from the FSP Info header.
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;
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FspInfoHeaderRelativeOff PROC NEAR PUBLIC
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;
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; This value will be pached by the build script
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;
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DD 012345678h
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FspInfoHeaderRelativeOff ENDP
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;
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; Returns FSP Base Address.
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;
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; This function gets the FSP Info Header using relative addressing and returns the FSP Base from the header structure
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;
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AsmGetFspBaseAddress PROC NEAR PUBLIC
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mov eax, AsmGetFspBaseAddress
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sub eax, dword ptr [FspInfoHeaderRelativeOff]
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add eax, 01Ch
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mov eax, dword ptr [eax]
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ret
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AsmGetFspBaseAddress ENDP
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;
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; No stack counter part of AsmGetFspBaseAddress. Return address is in edi.
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;
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AsmGetFspBaseAddressNoStack PROC NEAR PUBLIC
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mov eax, AsmGetFspBaseAddress
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sub eax, dword ptr [FspInfoHeaderRelativeOff]
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add eax, 01Ch
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mov eax, dword ptr [eax]
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jmp edi
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AsmGetFspBaseAddressNoStack ENDP
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;
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; Returns FSP Info Header.
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;
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; This function gets the FSP Info Header using relative addressing and returns it
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;
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AsmGetFspInfoHeader PROC NEAR PUBLIC
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mov eax, AsmGetFspBaseAddress
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sub eax, dword ptr [FspInfoHeaderRelativeOff]
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ret
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AsmGetFspInfoHeader ENDP
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;
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; No stack counter part of AsmGetFspInfoHeader. Return address is in edi.
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;
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AsmGetFspInfoHeaderNoStack PROC NEAR PUBLIC
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mov eax, AsmGetFspBaseAddress
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sub eax, dword ptr [FspInfoHeaderRelativeOff]
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jmp edi
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AsmGetFspInfoHeaderNoStack ENDP
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END |