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| author | Min Xu <min.m.xu@intel.com> | 2021-11-10 09:00:41 +0800 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2022-04-02 08:15:12 +0000 |
| commit | 818bc9596d720b43c369e57be4ad1fd8f7e1917b (patch) | |
| tree | 4e0efe55f5eabe45c133a808dbb49d4f798fd439 /MdePkg/Include | |
| parent | 77228269e7c3fac8c949ffed5e59182c4c521e58 (diff) | |
| download | edk2-818bc9596d720b43c369e57be4ad1fd8f7e1917b.tar.gz edk2-818bc9596d720b43c369e57be4ad1fd8f7e1917b.tar.bz2 edk2-818bc9596d720b43c369e57be4ad1fd8f7e1917b.zip | |
MdePkg: Introduce basic Tdx functions in BaseLib
RFC: https://bugzilla.tianocore.org/show_bug.cgi?id=3429
Introduce basic Tdx functions in BaseLib:
- TdCall ()
- TdVmCall ()
- TdIsEnabled ()
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Zhiguang Liu <zhiguang.liu@intel.com>
Cc: Brijesh Singh <brijesh.singh@amd.com>
Cc: Erdem Aktas <erdemaktas@google.com>
Cc: James Bottomley <jejb@linux.ibm.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Signed-off-by: Min Xu <min.m.xu@intel.com>
Diffstat (limited to 'MdePkg/Include')
| -rw-r--r-- | MdePkg/Include/Library/BaseLib.h | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/MdePkg/Include/Library/BaseLib.h b/MdePkg/Include/Library/BaseLib.h index 6aa0d97218..9d58a7c4ad 100644 --- a/MdePkg/Include/Library/BaseLib.h +++ b/MdePkg/Include/Library/BaseLib.h @@ -4759,6 +4759,72 @@ SpeculationBarrier ( VOID
);
+#if defined (MDE_CPU_X64) || defined (MDE_CPU_IA32)
+
+/**
+ The TDCALL instruction causes a VM exit to the Intel TDX module. It is
+ used to call guest-side Intel TDX functions, either local or a TD exit
+ to the host VMM, as selected by Leaf.
+
+ @param[in] Leaf Leaf number of TDCALL instruction
+ @param[in] Arg1 Arg1
+ @param[in] Arg2 Arg2
+ @param[in] Arg3 Arg3
+ @param[in,out] Results Returned result of the Leaf function
+
+ @return 0 A successful call
+ @return Other See individual leaf functions
+**/
+UINTN
+EFIAPI
+TdCall (
+ IN UINT64 Leaf,
+ IN UINT64 Arg1,
+ IN UINT64 Arg2,
+ IN UINT64 Arg3,
+ IN OUT VOID *Results
+ );
+
+/**
+ TDVMALL is a leaf function 0 for TDCALL. It helps invoke services from the
+ host VMM to pass/receive information.
+
+ @param[in] Leaf Number of sub-functions
+ @param[in] Arg1 Arg1
+ @param[in] Arg2 Arg2
+ @param[in] Arg3 Arg3
+ @param[in] Arg4 Arg4
+ @param[in,out] Results Returned result of the sub-function
+
+ @return 0 A successful call
+ @return Other See individual sub-functions
+
+**/
+UINTN
+EFIAPI
+TdVmCall (
+ IN UINT64 Leaf,
+ IN UINT64 Arg1,
+ IN UINT64 Arg2,
+ IN UINT64 Arg3,
+ IN UINT64 Arg4,
+ IN OUT VOID *Results
+ );
+
+/**
+ Probe if TD is enabled.
+
+ @return TRUE TD is enabled.
+ @return FALSE TD is not enabled.
+**/
+BOOLEAN
+EFIAPI
+TdIsEnabled (
+ VOID
+ );
+
+#endif
+
#if defined (MDE_CPU_X64)
//
// The page size for the PVALIDATE instruction
|