From nobody Mon Feb 9 08:56:59 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+84687+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+84687+1787277+3901457@groups.io; dmarc=fail(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1639383428; cv=none; d=zohomail.com; s=zohoarc; b=jskFScpUl8ckcO/euQJolMDktsXfXhYXZFlv+kEcOr1n6s8KW0cEGyyt/dwYN55isw84O2Zu3NonEVuuG/RSHlwbU0nZT6ElzLtPb6OcQ1/NZ1jz9kvNHsm09gtpb/AokUQhbqWv3ehQq9NqRiyS1Jx6PlxDryb3VUPziq9mNA0= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1639383428; h=Content-Type: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=CFTjT4OE0uudMU/f8T6vrXA5Sg1WuPg8Pd6TlRY2j74=; b=VbBfyuESR3XJ7DviZeTYisu2TqrPssE+3W7juhnc2LTcW/fVTsS+Z8vORuYRODxSvEnDFCViNcjccbDd5d/NPySfyi79OTCpoeIMH4CO9WfD0ygdx/xjJyQO6oKt0uXEm+RKOTjELBlTDxZrkOgag7nxn7SBvKiHewiNbwc3hjA= 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+84687+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 1639383428680819.8025685853685; Mon, 13 Dec 2021 00:17:08 -0800 (PST) Return-Path: X-Received: by 127.0.0.2 with SMTP id IWquYY1788612xvYPt9kNiOv; Mon, 13 Dec 2021 00:17:08 -0800 X-Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by mx.groups.io with SMTP id smtpd.web12.8797.1639383427460590947 for ; Mon, 13 Dec 2021 00:17:07 -0800 X-Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-555-qiVn6N_sMzO4Iqw7goHQcw-1; Mon, 13 Dec 2021 03:17:02 -0500 X-MC-Unique: qiVn6N_sMzO4Iqw7goHQcw-1 X-Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 81E7F8042EA; Mon, 13 Dec 2021 08:17:01 +0000 (UTC) X-Received: from sirius.home.kraxel.org (unknown [10.39.192.14]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 4654145D86; Mon, 13 Dec 2021 08:17:01 +0000 (UTC) X-Received: by sirius.home.kraxel.org (Postfix, from userid 1000) id 3187F180061A; Mon, 13 Dec 2021 09:16:58 +0100 (CET) From: "Gerd Hoffmann" To: devel@edk2.groups.io Cc: Jordan Justen , Jiewen Yao , Pawel Polawski , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Gerd Hoffmann , Ard Biesheuvel Subject: [edk2-devel] [PATCH v3 2/5] OvmfPkg/Microvm/fdt: load fdt from fw_cfg Date: Mon, 13 Dec 2021 09:16:55 +0100 Message-Id: <20211213081658.3535809-3-kraxel@redhat.com> In-Reply-To: <20211213081658.3535809-1-kraxel@redhat.com> References: <20211213081658.3535809-1-kraxel@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com 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,kraxel@redhat.com X-Gm-Message-State: igNaORdf0FVELTTZ10iIhJVRx1787277AA= Content-Transfer-Encoding: quoted-printable DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=groups.io; q=dns/txt; s=20140610; t=1639383428; bh=kji7QtXrsV5zd7tV5I15NoBn3luvRNp81Y1UkoxDCjU=; h=Cc:Content-Type:Date:From:Reply-To:Subject:To; b=MN8UkGFwJIdH85pyhhobaEyS3gy9Jen/Fc9myC9B3RNkHF8fs1xzQ9vGA95mHZm+ZF+ Lvq7e/FgZHf82JZaKNO2dMAP27VEYXfJsyiWWG7jDqncyFyXtZjuFnoRTgm1eFqnkubI0 Brk73sswUCfpTWFfeWZqEyEElKmdRd8e+ZU= X-ZohoMail-DKIM: pass (identity @groups.io) X-ZM-MESSAGEID: 1639383429266100012 Content-Type: text/plain; charset="utf-8" Needed for hardware detection: virtio-mmio devices for now, later also pcie root bridge. Depends on patched qemu which actually provides an fdt: https://gitlab.com/kraxel/qemu/-/commits/sirius/microvm-device-tree https://bugzilla.tianocore.org/show_bug.cgi?id=3D3689 Signed-off-by: Gerd Hoffmann Reviewed-by: Philippe Mathieu-Daude --- OvmfPkg/PlatformPei/PlatformPei.inf | 1 + OvmfPkg/PlatformPei/Platform.c | 45 +++++++++++++++++++++++++++++ 2 files changed, 46 insertions(+) diff --git a/OvmfPkg/PlatformPei/PlatformPei.inf b/OvmfPkg/PlatformPei/Plat= formPei.inf index 1c56ba275835..8ef404168c45 100644 --- a/OvmfPkg/PlatformPei/PlatformPei.inf +++ b/OvmfPkg/PlatformPei/PlatformPei.inf @@ -44,6 +44,7 @@ [Packages] =20 [Guids] gEfiMemoryTypeInformationGuid + gFdtHobGuid =20 [LibraryClasses] BaseLib diff --git a/OvmfPkg/PlatformPei/Platform.c b/OvmfPkg/PlatformPei/Platform.c index 906f64615de7..c9ec1d7e99fb 100644 --- a/OvmfPkg/PlatformPei/Platform.c +++ b/OvmfPkg/PlatformPei/Platform.c @@ -321,6 +321,50 @@ PciExBarInitialization ( ); } =20 +VOID +MicrovmInitialization ( + VOID + ) +{ + FIRMWARE_CONFIG_ITEM FdtItem; + UINTN FdtSize; + UINTN FdtPages; + EFI_STATUS Status; + UINT64 *FdtHobData; + VOID *NewBase; + + Status =3D QemuFwCfgFindFile ("etc/fdt", &FdtItem, &FdtSize); + if (EFI_ERROR (Status)) { + DEBUG ((DEBUG_INFO, "%a: no etc/fdt found in fw_cfg\n", __FUNCTION__)); + return; + } + + FdtPages =3D EFI_SIZE_TO_PAGES (FdtSize); + NewBase =3D AllocatePages (FdtPages); + if (NewBase =3D=3D NULL) { + DEBUG ((DEBUG_INFO, "%a: AllocatePages failed\n", __FUNCTION__)); + return; + } + + QemuFwCfgSelectItem (FdtItem); + QemuFwCfgReadBytes (FdtSize, NewBase); + + FdtHobData =3D BuildGuidHob (&gFdtHobGuid, sizeof (*FdtHobData)); + if (FdtHobData =3D=3D NULL) { + DEBUG ((DEBUG_INFO, "%a: BuildGuidHob failed\n", __FUNCTION__)); + return; + } + + DEBUG (( + DEBUG_INFO, + "%a: fdt at 0x%x (size %d)\n", + __FUNCTION__, + NewBase, + FdtSize + )); + *FdtHobData =3D (UINTN)NewBase; +} + VOID MiscInitialization ( VOID @@ -368,6 +412,7 @@ MiscInitialization ( break; case 0xffff: /* microvm */ DEBUG ((DEBUG_INFO, "%a: microvm\n", __FUNCTION__)); + MicrovmInitialization (); PcdStatus =3D PcdSet16S ( PcdOvmfHostBridgePciDevId, MICROVM_PSEUDO_DEVICE_ID --=20 2.33.1 -=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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