Re: [edk2-devel] [Patch V1 1/3] BaseTools: fixing FMMT ShrinkFv issue

Re: [edk2-devel] [Patch V1 1/3] BaseTools: fixing FMMT ShrinkFv issue

[Yuwei Chen]

For edk2-basetools repo, have made a PR for these three patches:
https://github.com/tianocore/edk2-basetools/pull/95

Thanks,
Christine (Yuwei)

> -----Original Message-----
> From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of Yuwei
> Chen
> Sent: Tuesday, April 18, 2023 5:53 PM
> To: devel@edk2.groups.io
> Cc: Rebecca Cran <rebecca@bsdio.com>; Gao, Liming
> <gaoliming@byosoft.com.cn>; Feng, Bob C <bob.c.feng@intel.com>
> Subject: [edk2-devel] [Patch V1 1/3] BaseTools: fixing FMMT ShrinkFv issue
> 
> 1. FvLength not change issue;
> 2. FileSystemGuid align with File Size;
> 
> Cc: Rebecca Cran <rebecca@bsdio.com>
> Cc: Liming Gao <gaoliming@byosoft.com.cn>
> Cc: Bob Feng <bob.c.feng@intel.com>
> Signed-off-by: Yuwei Chen <yuwei.chen@intel.com>
> ---
>  BaseTools/Source/Python/FMMT/core/FMMTOperation.py |  2 +-
>  BaseTools/Source/Python/FMMT/core/FvHandler.py     | 10 +++++++---
>  2 files changed, 8 insertions(+), 4 deletions(-)
> 
> diff --git a/BaseTools/Source/Python/FMMT/core/FMMTOperation.py
> b/BaseTools/Source/Python/FMMT/core/FMMTOperation.py
> index a86f8dda9a..d4aa339703 100644
> --- a/BaseTools/Source/Python/FMMT/core/FMMTOperation.py
> +++ b/BaseTools/Source/Python/FMMT/core/FMMTOperation.py
> @@ -188,7 +188,7 @@ def ExtractFfs(inputfile: str, Ffs_name: str, outputfile:
> str, Fv_name: str=None
> 
> FmmtParser.WholeFvTree.Findlist.remove(FmmtParser.WholeFvTree.Findlist
> [index])
>      if FmmtParser.WholeFvTree.Findlist != []:
>          TargetNode = FmmtParser.WholeFvTree.Findlist[0]
> -        if TargetNode.type == FV_TREE or SEC_FV_TREE or DATA_FV_TREE:
> +        if TargetNode.type == FV_TREE or TargetNode.type == SEC_FV_TREE or
> TargetNode.type == DATA_FV_TREE:
>              FinalData = struct2stream(TargetNode.Data.Header) +
> TargetNode.Data.Data
>              with open(outputfile, "wb") as f:
>                  f.write(FinalData)
> diff --git a/BaseTools/Source/Python/FMMT/core/FvHandler.py
> b/BaseTools/Source/Python/FMMT/core/FvHandler.py
> index ff3d637623..b0cc1951a1 100644
> --- a/BaseTools/Source/Python/FMMT/core/FvHandler.py
> +++ b/BaseTools/Source/Python/FMMT/core/FvHandler.py
> @@ -279,7 +279,7 @@ class FvHandler:
>                              ParTree.Child.remove(ParTree.Child[-1])
>                              ParTree.Data.Free_Space = 0
>                          ParTree.Data.Size += Needed_Space
> -                        ParTree.Data.Header.Fvlength = ParTree.Data.Size
> +                        ParTree.Data.Header.FvLength = ParTree.Data.Size
>                  ModifyFvSystemGuid(ParTree)
>                  for item in ParTree.Child:
>                      if item.type == FFS_FREE_SPACE:
> @@ -650,8 +650,12 @@ class FvHandler:
>              Removed_Space = TargetFv.Data.Free_Space - New_Free_Space
>              TargetFv.Child[-1].Data.Data = b'\xff' * New_Free_Space
>              TargetFv.Data.Size -= Removed_Space
> -            TargetFv.Data.Header.Fvlength = TargetFv.Data.Size
> -            ModifyFvSystemGuid(TargetFv)
> +            TargetFv.Data.Header.FvLength = TargetFv.Data.Size
> +            if struct2stream(TargetFv.Data.Header.FileSystemGuid) ==
> EFI_FIRMWARE_FILE_SYSTEM3_GUID_BYTE:
> +                if TargetFv.Data.Size <= 0xFFFFFF:
> +                    TargetFv.Data.Header.FileSystemGuid = ModifyGuidFormat(
> +                        "8c8ce578-8a3d-4f1c-9935-896185c32dd3")
> +
>              for item in TargetFv.Child:
>                  if item.type == FFS_FREE_SPACE:
>                      TargetFv.Data.Data += item.Data.Data + item.Data.PadData
> --
> 2.39.1.windows.1
> 
> 
> 
> 
>