From: Min M Xu <min.m...@intel.com>
TDVF's README is updated based on the latest feature.
- RTMR based measurement is supported in OvmfPkgX64 (Config-A)
- Features of Config-B have all been implemented, such as removing
unnecessary attack surfaces.
Cc: Erdem Aktas <erdemak...@google.com>
Cc: James Bottomley <j...@linux.ibm.com>
Cc: Jiewen Yao <jiewen....@intel.com>
Cc: Gerd Hoffmann <kra...@redhat.com>
Cc: Tom Lendacky <thomas.lenda...@amd.com>
Cc: Michael Roth <michael.r...@amd.com>
Signed-off-by: Min Xu <min.m...@intel.com>
---
OvmfPkg/IntelTdx/README | 19 +++++++------------
1 file changed, 7 insertions(+), 12 deletions(-)
diff --git a/OvmfPkg/IntelTdx/README b/OvmfPkg/IntelTdx/README
index cc01ebca5c0a..7307ede78faf 100644
--- a/OvmfPkg/IntelTdx/README
+++ b/OvmfPkg/IntelTdx/README
@@ -26,17 +26,19 @@ There are 2 configurations for TDVF.
- The OvmfX64Pkg.dsc includes SEV/TDX/normal OVMF basic boot capability.
The final binary can run on SEV/TDX/normal OVMF.
- No changes to existing OvmfPkgX64 image layout.
- - No need to add additional security features if they do not exist today.
- No need to remove features if they exist today.
- - RTMR is not supported.
- PEI phase is NOT skipped in either Td or Non-Td.
+ - RTMR based measurement is supported.
+ - External inputs from Host VMM are measured, such as TdHob, CFV.
+ - Other external inputs are measured, such as FW_CFG data, os loader,
+ initrd, etc.
<b>Config-B:</b>
- - (*) Add a standalone IntelTdx.dsc to a TDX specific directory for a *full*
+ - Add a standalone IntelTdx.dsc to a TDX specific directory for a *full*
feature TDVF.(Align with existing SEV)
- - (*) Threat model: VMM is out of TCB. (We need necessary change to prevent
+ - Threat model: VMM is out of TCB. (We need necessary change to prevent
attack from VMM)
- - (*) IntelTdx.dsc includes TDX/normal OVMF basic boot capability. The final
+ - IntelTdx.dsc includes TDX/normal OVMF basic boot capability. The final
binary can run on TDX/normal OVMF.
- It might eventually merge with AmdSev.dsc, but NOT at this point of
time. And we don?t know when it will happen. We need sync with AMD in
@@ -48,13 +50,6 @@ There are 2 configurations for TDVF.
initrd, etc.
- Need to remove unnecessary attack surfaces, such as network stack.
-In current stage, <b>Config-A</b> has been merged into edk2-master branch.
-The corresponding pkg file is OvmfPkg/OvmfPkgX64.dsc.
-
-<b>Config-B</b> is split into several waves. The corresponding pkg file is
-OvmfPkg/IntelTdx/IntelTdxX64.dsc. The features with (*) have been implemented
-and merged into edk2-master branch. Others are in upstreaming progress.
-
Build
------
- Build the TDVF (Config-A) target:
--
2.29.2.windows.2
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