The patch defines AMD's Memory Encryption Information CPUID leaf and SEV status MSR. The complete description for CPUID leaf is available in APM volume 2, Section 15.34.
Cc: Jordan Justen <jordan.l.jus...@intel.com> Cc: Laszlo Ersek <ler...@redhat.com> Cc: Jeff Fan <jeff....@intel.com> Cc: Liming Gao <liming....@intel.com> Cc: Leo Duran <leo.du...@amd.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Brijesh Singh <brijesh.si...@amd.com> Reviewed-by: Jeff Fan <jeff....@intel.com> --- UefiCpuPkg/Include/Register/Amd/Cpuid.h | 162 ++++++++++++++++++++ UefiCpuPkg/Include/Register/Amd/Fam17Msr.h | 62 ++++++++ UefiCpuPkg/Include/Register/Amd/Msr.h | 29 ++++ 3 files changed, 253 insertions(+) diff --git a/UefiCpuPkg/Include/Register/Amd/Cpuid.h b/UefiCpuPkg/Include/Register/Amd/Cpuid.h new file mode 100644 index 000000000000..5cd42667dc46 --- /dev/null +++ b/UefiCpuPkg/Include/Register/Amd/Cpuid.h @@ -0,0 +1,162 @@ +/** @file + CPUID leaf definitions. + + Provides defines for CPUID leaf indexes. Data structures are provided for + registers returned by a CPUID leaf that contain one or more bit fields. + 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> + This program and the accompanying materials are licensed and made available + under the terms and conditions of the BSD License which accompanies this + distribution. The full text of the license may be found at + http://opensource.org/licenses/bsd-license.php + + THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, + WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. + + @par Specification Reference: + AMD64 Architecture Programming Manaul volume 2, March 2017, Sections 15.34 + +**/ + +#ifndef __AMD_CPUID_H__ +#define __AMD_CPUID_H__ + +/** + + Memory Encryption Information + + @param EAX CPUID_MEMORY_ENCRYPTION_INFO (0x8000001F) + + @retval EAX Returns the memory encryption feature support status. + @retval EBX If memory encryption feature is present then return + the page table bit number used to enable memory encryption support + and reducing of physical address space in bits. + @retval ECX Returns number of encrypted guest supported simultaneosuly. + @retval EDX Returns minimum SEV enabled and SEV disbled ASID.. + + <b>Example usage</b> + @code + UINT32 Eax; + UINT32 Ebx; + UINT32 Ecx; + UINT32 Edx; + + AsmCpuid (CPUID_MEMORY_ENCRYPTION_INFO, &Eax, &Ebx, &Ecx, &Edx); + @endcode +**/ + +#define CPUID_MEMORY_ENCRYPTION_INFO 0x8000001F + +/** + CPUID Memory Encryption support information EAX for CPUID leaf + #CPUID_MEMORY_ENCRYPTION_INFO. +**/ +typedef union { + /// + /// Individual bit fields + /// + struct { + /// + /// [Bit 0] Secure Memory Encryption (Sme) Support + /// + UINT32 SmeBit:1; + + /// + /// [Bit 1] Secure Encrypted Virtualization (Sev) Support + /// + UINT32 SevBit:1; + + /// + /// [Bit 2] Page flush MSR support + /// + UINT32 PageFlushMsrBit:1; + + /// + /// [Bit 3] Encrypted state support + /// + UINT32 SevEsBit:1; + + /// + /// [Bit 4:31] Reserved + /// + UINT32 ReservedBits:28; + } Bits; + /// + /// All bit fields as a 32-bit value + /// + UINT32 Uint32; +} CPUID_MEMORY_ENCRYPTION_INFO_EAX; + +/** + CPUID Memory Encryption support information EBX for CPUID leaf + #CPUID_MEMORY_ENCRYPTION_INFO. +**/ +typedef union { + /// + /// Individual bit fields + /// + struct { + /// + /// [Bit 0:5] Page table bit number used to enable memory encryption + /// + UINT32 PtePosBits:6; + + /// + /// [Bit 6:11] Reduction of system physical address space bits when memory encryption is enabled + /// + UINT32 ReducedPhysBits:5; + + /// + /// [Bit 12:31] Reserved + /// + UINT32 ReservedBits:21; + } Bits; + /// + /// All bit fields as a 32-bit value + /// + UINT32 Uint32; +} CPUID_MEMORY_ENCRYPTION_INFO_EBX; + +/** + CPUID Memory Encryption support information ECX for CPUID leaf + #CPUID_MEMORY_ENCRYPTION_INFO. +**/ +typedef union { + /// + /// Individual bit fields + /// + struct { + /// + /// [Bit 0:31] Number of encrypted guest supported simultaneously + /// + UINT32 NumGuests; + } Bits; + /// + /// All bit fields as a 32-bit value + /// + UINT32 Uint32; +} CPUID_MEMORY_ENCRYPTION_INFO_ECX; + +/** + CPUID Memory Encryption support information EDX for CPUID leaf + #CPUID_MEMORY_ENCRYPTION_INFO. +**/ +typedef union { + /// + /// Individual bit fields + /// + struct { + /// + /// [Bit 0:31] Minimum SEV enabled, SEV-ES disabled ASID + /// + UINT32 MinAsid; + } Bits; + /// + /// All bit fields as a 32-bit value + /// + UINT32 Uint32; +} CPUID_MEMORY_ENCRYPTION_INFO_EDX; + +#endif diff --git a/UefiCpuPkg/Include/Register/Amd/Fam17Msr.h b/UefiCpuPkg/Include/Register/Amd/Fam17Msr.h new file mode 100644 index 000000000000..2c5d9738fae8 --- /dev/null +++ b/UefiCpuPkg/Include/Register/Amd/Fam17Msr.h @@ -0,0 +1,62 @@ +/** @file + MSR Definitions. + + Provides defines for Machine Specific Registers(MSR) indexes. Data structures + are provided for MSRs that contain one or more bit fields. If the MSR value + returned is a single 32-bit or 64-bit value, then a data structure is not + provided for that MSR. + + Copyright (c) 2017, Advanced Micro Devices. All rights reserved.<BR> + This program and the accompanying materials + are licensed and made available under the terms and conditions of the BSD License + which accompanies this distribution. The full text of the license may be found at + http://opensource.org/licenses/bsd-license.php + + THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, + WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. + + @par Specification Reference: + AMD64 Architecture Programming Manaul volume 2, March 2017, Sections 15.34 + +**/ + +#ifndef __FAM17_MSR_H +#define __FAM17_MSR_H + +/** + Secure Encrypted Virtualization (SEV) status register + +**/ +#define MSR_SEV_STATUS 0xc0010131 + +/** + MSR information returned for #MSR_SEV_STATUS +**/ +typedef union { + /// + /// Individual bit fields + /// + struct { + /// + /// [Bit 0] Secure Encrypted Virtualization (Sev) is enabled + /// + UINT32 SevBit:1; + + /// + /// [Bit 1] Secure Encrypted Virtualization Encrypted State (SevEs) is enabled + /// + UINT32 SevEsBit:1; + + UINT32 Reserved:30; + } Bits; + /// + /// All bit fields as a 32-bit value + /// + UINT32 Uint32; + /// + /// All bit fields as a 64-bit value + /// + UINT64 Uint64; +} MSR_SEV_STATUS_REGISTER; + +#endif diff --git a/UefiCpuPkg/Include/Register/Amd/Msr.h b/UefiCpuPkg/Include/Register/Amd/Msr.h new file mode 100644 index 000000000000..bde830feb0c5 --- /dev/null +++ b/UefiCpuPkg/Include/Register/Amd/Msr.h @@ -0,0 +1,29 @@ +/** @file + MSR Definitions. + + Provides defines for Machine Specific Registers(MSR) indexes. Data structures + are provided for MSRs that contain one or more bit fields. If the MSR value + returned is a single 32-bit or 64-bit value, then a data structure is not + provided for that MSR. + + Copyright (c) 2017, Advanced Micro Devices. All rights reserved.<BR> + This program and the accompanying materials + are licensed and made available under the terms and conditions of the BSD License + which accompanies this distribution. The full text of the license may be found at + http://opensource.org/licenses/bsd-license.php + + THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, + WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. + + @par Specification Reference: + AMD64 Architecture Programming Manaul volume 2, March 2017, Sections 15.34 + +**/ + +#ifndef __AMD_MSR_H__ +#define __AMD_MSR_H__ + +#include <Register/ArchitecturalMsr.h> +#include <Register/Amd/Fam17Msr.h> + +#endif -- 2.7.4 _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel
