[edk2-devel] [PATCH] MdeModulePkg/SmbiosDxe: Fix BcdRevision is not match with SMBIOS version

[Michael D Kinney]

Are mPrivateData.Smbios.MajorVersion and mPrivateData.Smbios.MinorVersion
guaranteed to be in range 0..9?

Mike

> -----Original Message-----
> From: devel at edk2.groups.io <devel at edk2.groups.io> On Behalf Of
> horacex.lien at intel.com
> Sent: Wednesday, August 30, 2023 2:13 AM
> To: devel at edk2.groups.io
> Cc: Lien, HoraceX <horacex.lien at intel.com>; Liu, Zhiguang
> <zhiguang.liu at intel.com>; Bi, Dandan <dandan.bi at intel.com>; Zeng, Star
> <star.zeng at intel.com>; Gao, Zhichao <zhichao.gao at intel.com>
> Subject: [edk2-devel] [PATCH] MdeModulePkg/SmbiosDxe: Fix BcdRevision is not
> match with SMBIOS version
> 
> From: HoraceX Lien <horacex.lien at intel.com>
> 
> REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4544
> 
> These value of Major/Minor version are updated from SMBIOS memory data,
> but BCD Revision is updated from PCD PcdSmbiosVersion.
> We should also update PCD PcdSmbiosVersion from SMBIOS memory data,
> to ensure that get consistent version value.
> 
> Cc: Zhiguang Liu <zhiguang.liu at intel.com>
> Cc: Dandan Bi <dandan.bi at intel.com>
> Cc: Star Zeng <star.zeng at intel.com>
> Cc: Zhichao Gao <zhichao.gao at intel.com>
> Signed-off-by: HoraceX Lien <horacex.lien at intel.com>
> ---
>  MdeModulePkg/Universal/SmbiosDxe/SmbiosDxe.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/MdeModulePkg/Universal/SmbiosDxe/SmbiosDxe.c
> b/MdeModulePkg/Universal/SmbiosDxe/SmbiosDxe.c
> index 1a86e69d3c..e3f6215033 100644
> --- a/MdeModulePkg/Universal/SmbiosDxe/SmbiosDxe.c
> +++ b/MdeModulePkg/Universal/SmbiosDxe/SmbiosDxe.c
> @@ -1072,7 +1072,7 @@ SmbiosCreateTable (
>      DEBUG ((DEBUG_INFO, "SmbiosCreateTable: Initialize 32-bit entry point
> structure\n"));
> 
>      EntryPointStructureData.MajorVersion      =
> mPrivateData.Smbios.MajorVersion;
> 
>      EntryPointStructureData.MinorVersion      =
> mPrivateData.Smbios.MinorVersion;
> 
> -    EntryPointStructureData.SmbiosBcdRevision = (UINT8)((PcdGet16
> (PcdSmbiosVersion) >> 4) & 0xf0) | (UINT8)(PcdGet16 (PcdSmbiosVersion) &
> 0x0f);
> 
> +    EntryPointStructureData.SmbiosBcdRevision =
> (mPrivateData.Smbios.MajorVersion << 4) | mPrivateData.Smbios.MinorVersion;
> 
>      PhysicalAddress                           = 0xffffffff;
> 
>      Status                                    = gBS->AllocatePages (
> 
>                                                         AllocateMaxAddress,
> 
> --
> 2.31.1.windows.1
> 
> 
> 
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> [michael.d.kinney at intel.com]
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