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IntelFsp2Pkg: Skip loading Microcode if MicrocodeCodeSize is zero 

During asm to Nasm conversion, we missed the code to skip loading the
microcode and return success if the size is zero. Added additional check to
report error if the microcode size is not zero but less than 2 kB.

Cc: Giri P Mudusuru <giri.p.mudusuru@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Satya Yarlagadda <satya.p.yarlagadda@intel.com>
Reviewed-by: Giri P Mudusuru <giri.p.mudusuru@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
This commit is contained in:
Yarlagadda, Satya P 2016-07-26 09:14:17 +08:00 committed by Jiewen Yao
parent ae5cc3c303
commit 4c53eb72d5
1 changed files with 9 additions and 1 deletions
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8
IntelFsp2Pkg/FspSecCore/Ia32/FspApiEntryT.nasm
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@ -173,6 +173,14 @@ ASM_PFX(LoadMicrocodeDefault):
jz ParamError
mov esp, eax
; skip loading Microcode if the MicrocodeCodeSize is zero
; and report error if size is less than 2k
mov eax, dword [esp + LoadMicrocodeParams.MicrocodeCodeSize]
cmp eax, 0
jz Exit2
cmp eax, 0800h
jl ParamError
mov esi, dword [esp + LoadMicrocodeParams.MicrocodeCodeAddr]
cmp esi, 0
jnz CheckMainHeader