From nobody Sun Feb 8 19:24:42 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of groups.io designates 66.175.222.108 as permitted sender) client-ip=66.175.222.108; envelope-from=bounce+27952+88973+1787277+3901457@groups.io; helo=mail02.groups.io; Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of groups.io designates 66.175.222.108 as permitted sender) smtp.mailfrom=bounce+27952+88973+1787277+3901457@groups.io; dmarc=fail(p=none dis=none) header.from=intel.com ARC-Seal: i=1; a=rsa-sha256; t=1650164507; cv=none; d=zohomail.com; s=zohoarc; b=fq1ra4VKht3KuPNSzjzhpCnxQaz/B0HTy7e0m02C6dypciE6876yUR2LYerqjVcW8YzATsis23zXtSayy4q06k0wJZnG90+gcAoZNxBN4Rt9nBurRbSofXr8rZQ8lfPTczeir/Kmyn0qqBk4wGd/u9PgatI8c+LmfXrpZnspOOk= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1650164507; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Id:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Reply-To:References:Sender:Subject:To; bh=neVzB8cqHPhLQfrQ7BhNruJs5CedeL8gjkIyUcQcgx4=; b=MaB346cGetxVnhAej/4GrhqYRNKbWuzr9mycDnBcF0aaje5elnFa3uTSzl+ftEQZguW/Bbe287CpoRJ5PPcQFn9P0sG67GcLl5AEZqIKKesocRR4KrW7+IxpInth8T9OmQtia/jaEn2yvd3oedwwQaacW/RNn2ZGxTYhc5uDQN4= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of groups.io designates 66.175.222.108 as permitted sender) smtp.mailfrom=bounce+27952+88973+1787277+3901457@groups.io; dmarc=fail header.from= (p=none dis=none) Received: from mail02.groups.io (mail02.groups.io [66.175.222.108]) by mx.zohomail.com with SMTPS id 1650164507738798.8989838708236; Sat, 16 Apr 2022 20:01:47 -0700 (PDT) Return-Path: X-Received: by 127.0.0.2 with SMTP id Vp7BYY1788612xf82ioTDPNJ; Sat, 16 Apr 2022 20:01:47 -0700 X-Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by mx.groups.io with SMTP id smtpd.web11.25369.1650164497717213024 for ; Sat, 16 Apr 2022 20:01:47 -0700 X-IronPort-AV: E=McAfee;i="6400,9594,10318"; a="349806253" X-IronPort-AV: E=Sophos;i="5.90,266,1643702400"; d="scan'208";a="349806253" X-Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Apr 2022 20:01:45 -0700 X-IronPort-AV: E=Sophos;i="5.90,266,1643702400"; d="scan'208";a="575044331" X-Received: from mxu9-mobl1.ccr.corp.intel.com ([10.255.29.191]) by orsmga008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Apr 2022 20:01:42 -0700 From: "Min Xu" To: devel@edk2.groups.io Cc: Min Xu , Michael D Kinney , Liming Gao , Zhiguang Liu , James Bottomley , James Bottomley , Jiewen Yao , Gerd Hoffmann , Brijesh Singh , Erdem Aktas , Tom Lendacky Subject: [edk2-devel] [PATCH V3 4/7] OvmfPkg: Add CcProbeLib Date: Sun, 17 Apr 2022 11:01:10 +0800 Message-Id: <9b76a0c7fb98c84f4df2ad904bf3fa516551fa1a.1650163941.git.min.m.xu@intel.com> In-Reply-To: References: MIME-Version: 1.0 Precedence: Bulk List-Unsubscribe: List-Subscribe: List-Help: Sender: devel@edk2.groups.io List-Id: Mailing-List: list devel@edk2.groups.io; contact devel+owner@edk2.groups.io Reply-To: devel@edk2.groups.io,min.m.xu@intel.com X-Gm-Message-State: fuULTXlNMlbCPIjTraKrFXwsx1787277AA= Content-Transfer-Encoding: quoted-printable DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=groups.io; q=dns/txt; s=20140610; t=1650164507; bh=aUxkbtjdp2QDhI1vYrtDLgOTJr5wup83Vp21fQSMn7U=; h=Cc:Date:From:Reply-To:Subject:To; b=ROA7qyC3zHpY54R7by+O5/CxbFwx/ft6iu3y9+mBaP7zNuSmHt8VrBqr1xJS2hul/Gc yFM672AkHft6r9zT8cfOJkn04FfFufGEL81pqN/Yq40fhNK0cHMrMVmqGQA+RqHy9YyTo qFzE6rXRDuR6fzOqLdQu1yumdangbunZ2aY= X-ZohoMail-DKIM: pass (identity @groups.io) X-ZM-MESSAGEID: 1650164509738100002 Content-Type: text/plain; charset="utf-8" BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3D3902 This is the OvmfPkg specific CcProbeLib. It checks the Ovmf WorkArea (PcdOvmfWorkAreaBase) to return the guest type. Cc: Michael D Kinney Cc: Liming Gao Cc: Zhiguang Liu Cc: James Bottomley Cc: James Bottomley Cc: Jiewen Yao Cc: Gerd Hoffmann Cc: Brijesh Singh Cc: Erdem Aktas Cc: Tom Lendacky Signed-off-by: Min Xu --- OvmfPkg/Library/CcProbeLib/CcProbeLib.c | 31 +++++++++++++++++++++++ OvmfPkg/Library/CcProbeLib/CcProbeLib.inf | 25 ++++++++++++++++++ 2 files changed, 56 insertions(+) create mode 100644 OvmfPkg/Library/CcProbeLib/CcProbeLib.c create mode 100644 OvmfPkg/Library/CcProbeLib/CcProbeLib.inf diff --git a/OvmfPkg/Library/CcProbeLib/CcProbeLib.c b/OvmfPkg/Library/CcPr= obeLib/CcProbeLib.c new file mode 100644 index 000000000000..b4babcb423f7 --- /dev/null +++ b/OvmfPkg/Library/CcProbeLib/CcProbeLib.c @@ -0,0 +1,31 @@ +/** @file + + CcProbeLib is used to probe the Confidential computing guest type. + + Copyright (c) 2022, Intel Corporation. All rights reserved.
+ SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ + +#include +#include + +/** + Probe the ConfidentialComputing Guest type. See defition of + CC_GUEST_TYPE in . + + @return The guest type + +**/ +UINT8 +EFIAPI +CcProbe ( + VOID + ) +{ + OVMF_WORK_AREA *WorkArea; + + WorkArea =3D (OVMF_WORK_AREA *)FixedPcdGet32 (PcdOvmfWorkAreaBase); + + return WorkArea !=3D NULL ? WorkArea->Header.GuestType : CCGuestTypeNonE= ncrypted; +} diff --git a/OvmfPkg/Library/CcProbeLib/CcProbeLib.inf b/OvmfPkg/Library/Cc= ProbeLib/CcProbeLib.inf new file mode 100644 index 000000000000..5300c9ba2644 --- /dev/null +++ b/OvmfPkg/Library/CcProbeLib/CcProbeLib.inf @@ -0,0 +1,25 @@ +## @file +# CcProbeLib is used to probe Confidential Computing guest type. +# +# Copyright (c) 2022, Intel Corporation. All rights reserved.
+# SPDX-License-Identifier: BSD-2-Clause-Patent +# +## + +[Defines] + INF_VERSION =3D 0x00010005 + BASE_NAME =3D CcProbeLib + FILE_GUID =3D 05184ec9-abb0-4491-8584-e388639a7c48 + MODULE_TYPE =3D BASE + VERSION_STRING =3D 1.0 + LIBRARY_CLASS =3D CcProbeLib + +[Sources] + CcProbeLib.c + +[Packages] + MdePkg/MdePkg.dec + OvmfPkg/OvmfPkg.dec + +[Pcd] + gUefiOvmfPkgTokenSpaceGuid.PcdOvmfWorkAreaBase --=20 2.29.2.windows.2 -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#88973): https://edk2.groups.io/g/devel/message/88973 Mute This Topic: https://groups.io/mt/90516976/1787277 Group Owner: devel+owner@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [importer@patchew.org] -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-