[edk2-devel] [PATCH] IntelFsp2Pkg: Fix FSP binary rebasing issue for PE32+ image

[Chiu, Chasel]

Reviewed-by: Chasel Chiu <chasel.chiu at intel.com>

> -----Original Message-----
> From: Maurice Ma <maurice.ma at intel.com>
> Sent: Thursday, November 12, 2020 8:11 AM
> To: devel at edk2.groups.io
> Cc: Ma, Maurice <maurice.ma at intel.com>; Chiu, Chasel
> <chasel.chiu at intel.com>; Desimone, Nathaniel L
> <nathaniel.l.desimone at intel.com>; Zeng, Star <star.zeng at intel.com>
> Subject: [PATCH] IntelFsp2Pkg: Fix FSP binary rebasing issue for PE32+ image
> 
> Current FSP rebasing script SplitFspBin.py has support for both
> PE32 and PE32+ image formats. However, while updating the ImageBase field in
> the image header, it always assumed the ImageBase field is 32bit long. Since
> PE32+ image format defined ImageBase as 64bit, the current script will only
> update the lower 32bit value and leave the upper 32bit untouched. It does not
> work well for PE32+ image that requires update in the upper 32bit ImageBase
> field. The expected behavior is to update the full 64bit field. This patch
> implemented this fix.
> 
> Signed-off-by: Maurice Ma <maurice.ma at intel.com>
> 
> Cc: Chasel Chiu <chasel.chiu at intel.com>
> Cc: Nate DeSimone <nathaniel.l.desimone at intel.com>
> Cc: Star Zeng <star.zeng at intel.com>
> ---
>  IntelFsp2Pkg/Tools/SplitFspBin.py | 8 ++++++--
>  1 file changed, 6 insertions(+), 2 deletions(-)
> 
> diff --git a/IntelFsp2Pkg/Tools/SplitFspBin.py
> b/IntelFsp2Pkg/Tools/SplitFspBin.py
> index 3c0d5af1b6..24272e82af 100644
> --- a/IntelFsp2Pkg/Tools/SplitFspBin.py
> +++ b/IntelFsp2Pkg/Tools/SplitFspBin.py
> @@ -677,8 +677,12 @@ class PeTeImage:
>          else:             offset  = self.Offset + self.DosHdr.e_lfanew             offset +=
> EFI_IMAGE_NT_HEADERS32.OptionalHeader.offset-            offset +=
> EFI_IMAGE_OPTIONAL_HEADER32.ImageBase.offset-            size    =
> EFI_IMAGE_OPTIONAL_HEADER32.ImageBase.size+            if
> self.PeHdr.OptionalHeader.PePlusOptHdr.Magic == 0x20b: # PE32+ image+
> offset += EFI_IMAGE_OPTIONAL_HEADER32_PLUS.ImageBase.offset+
> size    = EFI_IMAGE_OPTIONAL_HEADER32_PLUS.ImageBase.size+            else:+
> offset += EFI_IMAGE_OPTIONAL_HEADER32.ImageBase.offset+                size    =
> EFI_IMAGE_OPTIONAL_HEADER32.ImageBase.size          value  =
> Bytes2Val(fdbin[offset:offset+size]) + delta         fdbin[offset:offset+size] =
> Val2Bytes(value, size)--
> 2.29.2.windows.1



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