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| author | Min Xu <min.m.xu@intel.com> | 2022-03-16 10:56:25 +0800 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2022-04-02 08:15:12 +0000 |
| commit | 77228269e7c3fac8c949ffed5e59182c4c521e58 (patch) | |
| tree | 018ada085c4c136c0c3bc0d55e0c8a145a091d0f /MdePkg | |
| parent | 3f0c788a5f65ebee41e95feb52b6e77052119aaa (diff) | |
| download | edk2-77228269e7c3fac8c949ffed5e59182c4c521e58.tar.gz edk2-77228269e7c3fac8c949ffed5e59182c4c521e58.tar.bz2 edk2-77228269e7c3fac8c949ffed5e59182c4c521e58.zip | |
MdePkg: Update Cpuid.h for Tdx
RFC: https://bugzilla.tianocore.org/show_bug.cgi?id=3429
Guest software can be designed to run either as a TD, as a legacy virtual
machine, or directly on the CPU, based on enumeration of its run-time
environment. [TDX-Module] Chap 10.2 defines the flow and the new CPUID
leaf 0x21.
[TDX-Module] Architecture Specification: Intel(R) Trust Domain Extensions
Module, Chap 10.2, 344425-003US, August 2021
https://www.intel.com/content/dam/develop/external/us/en/documents/
tdx-module-1.0-public-spec-v0.931.pdf
Cc: Ray Ni <ray.ni@intel.com>
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>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Min Xu <min.m.xu@intel.com>
Diffstat (limited to 'MdePkg')
| -rw-r--r-- | MdePkg/Include/Register/Intel/Cpuid.h | 35 |
1 files changed, 33 insertions, 2 deletions
diff --git a/MdePkg/Include/Register/Intel/Cpuid.h b/MdePkg/Include/Register/Intel/Cpuid.h index bd6349d794..350bf60252 100644 --- a/MdePkg/Include/Register/Intel/Cpuid.h +++ b/MdePkg/Include/Register/Intel/Cpuid.h @@ -12,6 +12,8 @@ @par Specification Reference:
Intel(R) 64 and IA-32 Architectures Software Developer's Manual, Volume 2A,
November 2018, CPUID instruction.
+ Architecture Specification: Intel(R) Trust Domain Extensions Module, Chap 10.2
+ 344425-003US, August 2021
**/
@@ -321,9 +323,9 @@ typedef union { ///
UINT32 RDRAND : 1;
///
- /// [Bit 31] Always returns 0.
+ /// [Bit 31] A value of 1 indicates that processor is in Para-Virtualized.
///
- UINT32 NotUsed : 1;
+ UINT32 ParaVirtualized : 1;
} Bits;
///
/// All bit fields as a 32-bit value
@@ -3690,6 +3692,35 @@ typedef union { ///
/**
+ CPUID Guest TD Run Time Environment Enumeration Leaf
+
+ @note
+ Guest software can be designed to run either as a TD, as a legacy virtual machine,
+ or directly on the CPU, based on enumeration of its run-time environment.
+ CPUID leaf 21H emulation is done by the Intel TDX module. Sub-leaf 0 returns the values
+ shown below. Other sub-leaves return 0 in EAX/EBX/ECX/EDX.
+ EAX: 0x00000000
+ EBX: 0x65746E49 "Inte"
+ ECX: 0x20202020 " "
+ EDX: 0x5844546C "lTDX"
+
+ @param EAX CPUID_GUESTTD_RUNTIME_ENVIRONMENT (0x21)
+ @param ECX Level number
+
+**/
+#define CPUID_GUESTTD_RUNTIME_ENVIRONMENT 0x21
+
+///
+/// @{ CPUID Guest TD signature values returned by Intel processors
+///
+#define CPUID_GUESTTD_SIGNATURE_GENUINE_INTEL_EBX SIGNATURE_32 ('I', 'n', 't', 'e')
+#define CPUID_GUESTTD_SIGNATURE_GENUINE_INTEL_ECX SIGNATURE_32 (' ', ' ', ' ', ' ')
+#define CPUID_GUESTTD_SIGNATURE_GENUINE_INTEL_EDX SIGNATURE_32 ('l', 'T', 'D', 'X')
+///
+/// @}
+///
+
+/**
CPUID Extended Function
@param EAX CPUID_EXTENDED_FUNCTION (0x80000000)
|