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| author | Abdul Lateef Attar <AbdulLateef.Attar@amd.com> | 2024-01-18 09:24:08 +0530 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2024-01-31 13:08:29 +0000 |
| commit | d14526372d6c86c3ea595b7a4da8c9d8c0940c22 (patch) | |
| tree | 3ed13242e9bf05b10be90229b992deeb9fa00b79 | |
| parent | 40a45b5a2be3bf886ff481d4b538d20624d02589 (diff) | |
| download | edk2-d14526372d6c86c3ea595b7a4da8c9d8c0940c22.zip edk2-d14526372d6c86c3ea595b7a4da8c9d8c0940c22.tar.gz edk2-d14526372d6c86c3ea595b7a4da8c9d8c0940c22.tar.bz2 | |
MdePkg: Adds AMD Extended CPU topology CPUID
Adds cpuid macro for AMD extended CPU topology.
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Zhiguang Liu <zhiguang.liu@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Abdul Lateef Attar <AbdulLateef.Attar@amd.com>
Message-Id: <15199aaefbc497bb1ea7b20028c13ebedd8c488b.1705549445.git.AbdulLateef.Attar@amd.com>
Acked-by: Michael D Kinney <michael.d.kinney@intel.com>
Acked-by: Ray Ni <ray.ni@intel.com>
Acked-by: Tom Lendacky <thomas.lendacky@amd.com>
| -rw-r--r-- | MdePkg/Include/Register/Amd/Cpuid.h | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/MdePkg/Include/Register/Amd/Cpuid.h b/MdePkg/Include/Register/Amd/Cpuid.h index 44394fc..add43c4 100644 --- a/MdePkg/Include/Register/Amd/Cpuid.h +++ b/MdePkg/Include/Register/Amd/Cpuid.h @@ -6,7 +6,7 @@ If a register returned is a single 32-bit value, then a data structure is
not provided for that register.
- Copyright (c) 2017, Advanced Micro Devices. All rights reserved.<BR>
+ Copyright (c) 2017 - 2024, Advanced Micro Devices. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
@@ -43,6 +43,27 @@ CPUID Signature Information ///
/**
+ CPUID Extended Topology Enumeration
+
+ @note
+ Reference: AMD64 Architecture Programmer’s Manual Volume 3: General-Purpose and System Instructions,
+ Revision 3.35 Appendix E,
+ E.4.24 Function 8000_0026—Extended CPU Topology:
+ CPUID Fn8000_0026 reports extended topology information for logical processors, including
+ asymmetric and heterogenous topology descriptions. Individual logical processors may report
+ different values in systems with asynchronous and heterogeneous topologies.
+ The topology level is selected by the value passed to the instruction in ECX. To discover the topology
+ of a system, software should execute CPUID Fn8000_0026 with increasing ECX values, starting with
+ a value of zero, until the returned hierarchy level type (CPUID Fn8000_0026_ECX[LevelType]) is
+ equal to zero. It is not guaranteed that all topology level types are present in the system
+
+ @param EAX AMD_CPUID_EXTENDED_TOPOLOGY (0x80000026)
+ @param ECX Level number
+
+**/
+#define AMD_CPUID_EXTENDED_TOPOLOGY 0x80000026
+
+/**
CPUID Extended Processor Signature and Features
@param EAX CPUID_EXTENDED_CPU_SIG (0x80000001)
|