[edk2-devel] [PATCH V1 4/7] OvmfPkg/IntelTdx: Update tdx measurement in SEC phase
Min Xu
min.m.xu at intel.com
Tue Jan 17 07:40:13 UTC 2023
From: Min M Xu <min.m.xu at intel.com>
BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4243
After TdxHelperLib is instroduced, the SecMain.c in IntelTdx is updated
with the new functions provided by TdxHelperLib.
Cc: Erdem Aktas <erdemaktas at google.com>
Cc: James Bottomley <jejb at linux.ibm.com>
Cc: Jiewen Yao <jiewen.yao at intel.com>
Cc: Gerd Hoffmann <kraxel at redhat.com>
Cc: Tom Lendacky <thomas.lendacky at amd.com>
Cc: Michael Roth <michael.roth at amd.com>
Signed-off-by: Min Xu <min.m.xu at intel.com>
---
OvmfPkg/IntelTdx/IntelTdxX64.dsc | 4 +---
OvmfPkg/IntelTdx/Sec/SecMain.c | 17 +++++++++++++++--
2 files changed, 16 insertions(+), 5 deletions(-)
diff --git a/OvmfPkg/IntelTdx/IntelTdxX64.dsc b/OvmfPkg/IntelTdx/IntelTdxX64.dsc
index 81511e3556a6..d8232f27dae9 100644
--- a/OvmfPkg/IntelTdx/IntelTdxX64.dsc
+++ b/OvmfPkg/IntelTdx/IntelTdxX64.dsc
@@ -541,10 +541,8 @@
OvmfPkg/IntelTdx/Sec/SecMain.inf {
<LibraryClasses>
NULL|MdeModulePkg/Library/LzmaCustomDecompressLib/LzmaCustomDecompressLib.inf
- TpmMeasurementLib|SecurityPkg/Library/SecTpmMeasurementLib/SecTpmMeasurementLibTdx.inf
+ NULL|OvmfPkg/IntelTdx/TdxHelperLib/SecTdxHelperLib.inf
BaseCryptLib|CryptoPkg/Library/BaseCryptLib/SecCryptLib.inf
- HashLib|SecurityPkg/Library/HashLibTdx/HashLibTdx.inf
- NULL|SecurityPkg/Library/HashInstanceLibSha384/HashInstanceLibSha384.inf
}
#
diff --git a/OvmfPkg/IntelTdx/Sec/SecMain.c b/OvmfPkg/IntelTdx/Sec/SecMain.c
index ab01ec9ab19c..ccb217b709a0 100644
--- a/OvmfPkg/IntelTdx/Sec/SecMain.c
+++ b/OvmfPkg/IntelTdx/Sec/SecMain.c
@@ -24,7 +24,7 @@
#include <Library/LocalApicLib.h>
#include <Library/CpuExceptionHandlerLib.h>
#include <IndustryStandard/Tdx.h>
-#include <Library/PlatformInitLib.h>
+#include <Library/TdxHelperLib.h>
#include <Library/CcProbeLib.h>
#include <Library/PeilessStartupLib.h>
@@ -62,12 +62,25 @@ SecCoreStartupWithStack (
volatile UINT8 *Table;
if (CcProbe () == CcGuestTypeIntelTdx) {
+ //
+ // From the security perspective all the external input should be measured before
+ // it is consumed. TdHob and Configuration FV (Cfv) image are passed from VMM
+ // and should be measured here.
+ //
+ if (EFI_ERROR (TdxHelperMeasureTdHob ())) {
+ CpuDeadLoop ();
+ }
+
+ if (EFI_ERROR (TdxHelperMeasureCfvImage ())) {
+ CpuDeadLoop ();
+ }
+
//
// For Td guests, the memory map info is in TdHobLib. It should be processed
// first so that the memory is accepted. Otherwise access to the unaccepted
// memory will trigger tripple fault.
//
- if (ProcessTdxHobList () != EFI_SUCCESS) {
+ if (TdxHelperProcessTdHob () != EFI_SUCCESS) {
CpuDeadLoop ();
}
}
--
2.29.2.windows.2
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