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contact devel+owner@edk2.groups.io Reply-To: devel@edk2.groups.io,thomas.lendacky@amd.com X-Gm-Message-State: uXT5vuqQ1DAlesKL0SKyfi7ux1787277AA= Content-Transfer-Encoding: quoted-printable DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=groups.io; q=dns/txt; s=20140610; t=1595366406; bh=ku+aqtelBwBmqC7+ObJDnZuN5JbkYdB1f/KIC8mIAZQ=; h=CC:Content-Type:Date:From:Reply-To:Subject:To; b=T64QHlTRiNd0DjlEUxhXeT2WzUId/zAX4KlVH39VpvyPTrlp52n35FdZvkvEylrz8+K fmHkt/NHaWxY4LONv76bvw3yk0jVH8AN09fv4+07PQAusZgGI3gPSp+zycw58nh/SNB1E lmtL0taReyh+fumagwqtrYmyl7HhGnFkXVM= X-ZohoMail-DKIM: pass (identity @groups.io) Content-Type: text/plain; charset="utf-8" From: Tom Lendacky BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3D2198 For SEV-ES, the GHCB page address is stored in the GHCB MSR register (0xc0010130). Define the register and the format used for register during GHCB protocol negotiation. Cc: Michael D Kinney Cc: Liming Gao Signed-off-by: Tom Lendacky Reviewed-by: Liming Gao --- MdePkg/Include/Register/Amd/Fam17Msr.h | 46 ++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) diff --git a/MdePkg/Include/Register/Amd/Fam17Msr.h b/MdePkg/Include/Regist= er/Amd/Fam17Msr.h index 6ef45a9b21d3..e4db09c5184c 100644 --- a/MdePkg/Include/Register/Amd/Fam17Msr.h +++ b/MdePkg/Include/Register/Amd/Fam17Msr.h @@ -17,6 +17,52 @@ #ifndef __FAM17_MSR_H__ #define __FAM17_MSR_H__ =20 +/** + Secure Encrypted Virtualization - Encrypted State (SEV-ES) GHCB register + +**/ +#define MSR_SEV_ES_GHCB 0xc0010130 + +/** + MSR information returned for #MSR_SEV_ES_GHCB +**/ +typedef union { + struct { + UINT32 Function:12; + UINT32 Reserved1:20; + UINT32 Reserved2:32; + } GhcbInfo; + + struct { + UINT8 Reserved[3]; + UINT8 SevEncryptionBitPos; + UINT16 SevEsProtocolMin; + UINT16 SevEsProtocolMax; + } GhcbProtocol; + + struct { + UINT32 Function:12; + UINT32 ReasonCodeSet:4; + UINT32 ReasonCode:8; + UINT32 Reserved1:8; + UINT32 Reserved2:32; + } GhcbTerminate; + + VOID *Ghcb; + + UINT64 GhcbPhysicalAddress; +} MSR_SEV_ES_GHCB_REGISTER; + +#define GHCB_INFO_SEV_INFO 1 +#define GHCB_INFO_SEV_INFO_GET 2 +#define GHCB_INFO_CPUID_REQUEST 4 +#define GHCB_INFO_CPUID_RESPONSE 5 +#define GHCB_INFO_TERMINATE_REQUEST 256 + +#define GHCB_TERMINATE_GHCB 0 +#define GHCB_TERMINATE_GHCB_GENERAL 0 +#define GHCB_TERMINATE_GHCB_PROTOCOL 1 + /** Secure Encrypted Virtualization (SEV) status register =20 --=20 2.27.0 -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D- Groups.io Links: You receive all messages sent to this group. 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