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IntelFspPkg/FspSecCore add AsmGetFspBaseAddressNoStack and AsmGetFspInfoHeaderNoStack

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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
This commit is contained in:
Yao, Jiewen
2015-05-22 07:49:34 +00:00
committed by jyao1
parent e7401ee1af
commit f0abe42fd7
4 changed files with 76 additions and 9 deletions
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34
IntelFspPkg/FspSecCore/Ia32/FspHelper.asm
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@@ -15,6 +15,10 @@
.model flat,C
.code
;
; FspInfoHeaderRelativeOff is patched during build process and initialized to offset of the AsmGetFspBaseAddress
; from the FSP Info header.
;
FspInfoHeaderRelativeOff PROC NEAR PUBLIC
;
; This value will be pached by the build script
@@ -22,6 +26,11 @@ FspInfoHeaderRelativeOff PROC NEAR PUBLIC
DD 012345678h
FspInfoHeaderRelativeOff ENDP
;
; Returns FSP Base Address.
;
; This function gets the FSP Info Header using relative addressing and returns the FSP Base from the header structure
;
AsmGetFspBaseAddress PROC NEAR PUBLIC
mov eax, AsmGetFspBaseAddress
sub eax, dword ptr [FspInfoHeaderRelativeOff]
@@ -30,10 +39,35 @@ AsmGetFspBaseAddress PROC NEAR PUBLIC
ret
AsmGetFspBaseAddress ENDP
;
; No stack counter part of AsmGetFspBaseAddress. Return address is in edi.
;
AsmGetFspBaseAddressNoStack PROC NEAR PUBLIC
mov eax, AsmGetFspBaseAddress
sub eax, dword ptr [FspInfoHeaderRelativeOff]
add eax, 01Ch
mov eax, dword ptr [eax]
jmp edi
AsmGetFspBaseAddressNoStack ENDP
;
; Returns FSP Info Header.
;
; This function gets the FSP Info Header using relative addressing and returns it
;
AsmGetFspInfoHeader PROC NEAR PUBLIC
mov eax, AsmGetFspBaseAddress
sub eax, dword ptr [FspInfoHeaderRelativeOff]
ret
AsmGetFspInfoHeader ENDP
;
; No stack counter part of AsmGetFspInfoHeader. Return address is in edi.
;
AsmGetFspInfoHeaderNoStack PROC NEAR PUBLIC
mov eax, AsmGetFspBaseAddress
sub eax, dword ptr [FspInfoHeaderRelativeOff]
jmp edi
AsmGetFspInfoHeaderNoStack ENDP
END