[edk2-devel] [PATCH V7 1/1] OvmfPkg: Enable TDX in ResetVector

[Gerd Hoffmann]

  Hi,

> +%ifdef ARCH_X64
> +;
> +; TDX Metadata offset block
> +;
> +; TdxMetadata.asm is included in ARCH_X64 because Inte TDX is only
> +; available in ARCH_X64. Below block describes the offset of
> +; TdxMetadata block in Ovmf image
> +;
> +; GUID : e47a6535-984a-4798-865e-4685a7bf8ec2
> +;
> +tdxMetadataOffsetStart:
> +    DD      tdxMetadataOffsetStart - TdxMetadataGuid - 16
> +    DW      tdxMetadataOffsetEnd - tdxMetadataOffsetStart
> +    DB      0x35, 0x65, 0x7a, 0xe4, 0x4a, 0x98, 0x98, 0x47
> +    DB      0x86, 0x5e, 0x46, 0x85, 0xa7, 0xbf, 0x8e, 0xc2
> +tdxMetadataOffsetEnd:
> +
> +%endif

This should be switched to common ovmf metadata (see patches 4-7 of the
SEV-SNP series).

Min: please have a look at these patches.

Brijesh: It might be useful to post the metadata patches as separate
series.

> +; Load the GDT and set the CR0, then jump to Flat 32 protected mode.

That comment isn't correct, you are already in 32-bit mode.

> +; Modified:  EAX, EBX, CR0, CR4, DS, ES, FS, GS, SS

CS too ...

> +    jmp     LINEAR_CODE_SEL:dword ADDR_OF(jumpToFlat32BitAndLandHere)
> +jumpToFlat32BitAndLandHere:

... right here.

> --- /dev/null
> +++ b/OvmfPkg/ResetVector/Main.asm

Can you add a separate patch for "copy Main.asm from UefiCpuPkg
unmodified" please?  Having the changes for TDX separately is helpful
for review.

take care,
  Gerd



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