1 files changed, 9 insertions, 1 deletions

diff --git a/IntelFsp2Pkg/FspSecCore/Ia32/FspApiEntryT.nasm b/IntelFsp2Pkg/FspSecCore/Ia32/FspApiEntryT.nasm
index 55ee85a06e..6e860238fd 100644
--- a/IntelFsp2Pkg/FspSecCore/Ia32/FspApiEntryT.nasm
+++ b/IntelFsp2Pkg/FspSecCore/Ia32/FspApiEntryT.nasm
@@ -172,7 +172,15 @@ ASM_PFX(LoadMicrocodeDefault):
    cmp    eax, 0

    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