[edk2-devel] 回复: [PATCH] MdeModulePkg/DxeCapsuleLibFmp: Capsule on Disk file name capsule

[gaoliming]

Bob:
  

> -----邮件原件-----
> 发件人: Bob Morgan <bobm at nvidia.com>
> 发送时间: 2021年10月19日 4:12
> 收件人: devel at edk2.groups.io
> 抄送: Bob Morgan <bobm at nvidia.com>; Jian J Wang
> <jian.j.wang at intel.com>; Liming Gao <gaoliming at byosoft.com.cn>; Guomin
> Jiang <guomin.jiang at intel.com>
> 主题: [PATCH] MdeModulePkg/DxeCapsuleLibFmp: Capsule on Disk file name
> capsule
> 
> Enhance RelocateCapsuleToRam() to skip creation of the Capsule on Disk
> file name capsule if PcdSupportUpdateCapsuleReset feature is not enabled.
> This avoids an EFI_UNSUPPORTED return status from UpdateCapsule() when
> the
> file name capsule is encountered and PcdSupportUpdateCapsuleReset is
> FALSE.
> 
> Cc: Jian J Wang <jian.j.wang at intel.com>
> Cc: Liming Gao <gaoliming at byosoft.com.cn>
> Cc: Guomin Jiang <guomin.jiang at intel.com>
> Signed-off-by: Bob Morgan <bobm at nvidia.com>
> ---
>  .../Library/DxeCapsuleLibFmp/CapsuleOnDisk.c  | 19
> ++++++++++++++++---
>  1 file changed, 16 insertions(+), 3 deletions(-)
> 
> diff --git a/MdeModulePkg/Library/DxeCapsuleLibFmp/CapsuleOnDisk.c
> b/MdeModulePkg/Library/DxeCapsuleLibFmp/CapsuleOnDisk.c
> index 4c32c6cdcf..e65e335585 100644
> --- a/MdeModulePkg/Library/DxeCapsuleLibFmp/CapsuleOnDisk.c
> +++ b/MdeModulePkg/Library/DxeCapsuleLibFmp/CapsuleOnDisk.c
> @@ -1739,6 +1739,7 @@ RelocateCapsuleToRam (
>    UINT8                         *StringBuf;
>    UINTN                         StringSize;
>    UINTN                         TotalStringSize;
> +  UINTN                         CapsulesToProcess;
> 
>    CapsuleOnDiskBuf = NULL;
>    BlockDescriptors = NULL;
> @@ -1778,6 +1779,13 @@ RelocateCapsuleToRam (
>      TotalStringSize += StrSize
> (CapsuleOnDiskBuf[Index].FileInfo->FileName);
>    }
> 
> +  // If Persist Across Reset isn't supported, skip the file name strings
capsule
> +  if (!FeaturePcdGet (PcdSupportUpdateCapsuleReset)) {
> +    CapsulesToProcess = CapsuleOnDiskNum;
> +    goto BuildSg;
> +  }
> +  CapsulesToProcess = CapsuleOnDiskNum + 1;
> +
>    FileNameCapsule = AllocateZeroPool (sizeof (EFI_CAPSULE_HEADER) +
> TotalStringSize);
>    if (FileNameCapsule == NULL) {
>      DEBUG ((DEBUG_ERROR, "Fail to allocate memory for name
> capsule.\n"));
> @@ -1804,18 +1812,23 @@ RelocateCapsuleToRam (
>    //
>    // 3. Build Gather list for the capsules
>    //
> -  Status = BuildGatherList (CapsuleBuffer, CapsuleSize, CapsuleOnDiskNum
+
> 1, &BlockDescriptors);
> +BuildSg:

What does 'BuildSg' mean? 

Thanks
Liming
> +  Status = BuildGatherList (CapsuleBuffer, CapsuleSize,
CapsulesToProcess,
> &BlockDescriptors);
>    if (EFI_ERROR (Status) || BlockDescriptors == NULL) {
>      FreePool (CapsuleBuffer);
>      FreePool (CapsuleSize);
> -    FreePool (FileNameCapsule);
> +    if (FileNameCapsule != NULL) {
> +      FreePool (FileNameCapsule);
> +    }
>      return EFI_OUT_OF_RESOURCES;
>    }
> 
>    //
>    // 4. Call UpdateCapsule() service
>    //
> -  Status = gRT->UpdateCapsule((EFI_CAPSULE_HEADER **) CapsuleBuffer,
> CapsuleOnDiskNum + 1, (UINTN) BlockDescriptors);
> +  Status = gRT->UpdateCapsule ((EFI_CAPSULE_HEADER **) CapsuleBuffer,
> +                               CapsulesToProcess,
> +                               (UINTN) BlockDescriptors);
> 
>    return Status;
>  }
> --
> 2.17.1





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