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OvmfPkg: Set default Pci PCDs in Tdx guest

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In previous implementation below Pci related PCDs were set based on the
ResourceDescriptor passed in TdHob.
 - PcdPciMmio64Base / PcdPciMmio64Size
 - PcdPciMmio32Base / PcdPciMmio32Size
 - PcdPciIoBase / PcdPciIoSize

The PCDs will not be set if TdHob doesn't include these information. This
patch set the PCDs with the information initialized in PlatformInitLib
by default. Then TdxDxe will check the ResourceDescriptor in TdHob and
reset them if they're included.

Cc: Erdem Aktas <erdemaktas@google.com>
Cc: James Bottomley <jejb@linux.ibm.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Min Xu <min.m.xu@intel.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
This commit is contained in:
Min M Xu 2022-08-26 08:41:09 +08:00 committed by mergify[bot]
parent 1b1c58ab32
commit 7cc7c52670
1 changed files with 13 additions and 13 deletions
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26
OvmfPkg/TdxDxe/TdxDxe.c
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@ -68,20 +68,20 @@ SetPcdSettings (
PcdStatus = PcdSet64S (PcdTdxSharedBitMask, TdSharedPageMask ());
ASSERT_RETURN_ERROR (PcdStatus);
DEBUG ((DEBUG_INFO, "TdxSharedBitMask=0x%llx\n", PcdGet64 (PcdTdxSharedBitMask)));
} else {
PcdStatus = PcdSet64S (PcdPciMmio64Base, PlatformInfoHob->PcdPciMmio64Base);
ASSERT_RETURN_ERROR (PcdStatus);
PcdStatus = PcdSet64S (PcdPciMmio64Size, PlatformInfoHob->PcdPciMmio64Size);
ASSERT_RETURN_ERROR (PcdStatus);
PcdStatus = PcdSet64S (PcdPciMmio32Base, PlatformInfoHob->PcdPciMmio32Base);
ASSERT_RETURN_ERROR (PcdStatus);
PcdStatus = PcdSet64S (PcdPciMmio32Size, PlatformInfoHob->PcdPciMmio32Size);
ASSERT_RETURN_ERROR (PcdStatus);
PcdStatus = PcdSet64S (PcdPciIoBase, PlatformInfoHob->PcdPciIoBase);
ASSERT_RETURN_ERROR (PcdStatus);
PcdStatus = PcdSet64S (PcdPciIoSize, PlatformInfoHob->PcdPciIoSize);
ASSERT_RETURN_ERROR (PcdStatus);
}
PcdStatus = PcdSet64S (PcdPciMmio64Base, PlatformInfoHob->PcdPciMmio64Base);
ASSERT_RETURN_ERROR (PcdStatus);
PcdStatus = PcdSet64S (PcdPciMmio64Size, PlatformInfoHob->PcdPciMmio64Size);
ASSERT_RETURN_ERROR (PcdStatus);
PcdStatus = PcdSet64S (PcdPciMmio32Base, PlatformInfoHob->PcdPciMmio32Base);
ASSERT_RETURN_ERROR (PcdStatus);
PcdStatus = PcdSet64S (PcdPciMmio32Size, PlatformInfoHob->PcdPciMmio32Size);
ASSERT_RETURN_ERROR (PcdStatus);
PcdStatus = PcdSet64S (PcdPciIoBase, PlatformInfoHob->PcdPciIoBase);
ASSERT_RETURN_ERROR (PcdStatus);
PcdStatus = PcdSet64S (PcdPciIoSize, PlatformInfoHob->PcdPciIoSize);
ASSERT_RETURN_ERROR (PcdStatus);
}
/**