From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id BBBEF80438 for ; Fri, 17 Mar 2017 13:47:38 -0700 (PDT) Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 2C6FA7E9CA; Fri, 17 Mar 2017 20:47:39 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 2C6FA7E9CA Authentication-Results: ext-mx02.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx02.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=lersek@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com 2C6FA7E9CA Received: from lacos-laptop-7.usersys.redhat.com (ovpn-116-70.phx2.redhat.com [10.3.116.70]) by smtp.corp.redhat.com (Postfix) with ESMTP id 352EE5DC1D; Fri, 17 Mar 2017 20:47:38 +0000 (UTC) From: Laszlo Ersek To: edk2-devel-01 Cc: Ard Biesheuvel , Leif Lindholm Date: Fri, 17 Mar 2017 21:47:20 +0100 Message-Id: <20170317204731.31488-2-lersek@redhat.com> In-Reply-To: <20170317204731.31488-1-lersek@redhat.com> References: <20170317204731.31488-1-lersek@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.26]); Fri, 17 Mar 2017 20:47:39 +0000 (UTC) Subject: [PATCH v2 01/12] Revert "ArmVirtPkg/FdtClientDxe: make DT table installation !ACPI dependent" X-BeenThere: edk2-devel@lists.01.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: EDK II Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 17 Mar 2017 20:47:38 -0000 This reverts commit 78c41ff519b187d8979cda7074f007a6323f9acd. We realized that DXE drivers that are independent of AcpiPlatformDxe (that is, independent of QEMU's ACPI generation), such as RamDiskDxe and BootGraphicsResourceTableDxe, may produce and/or manipulate ACPI tables, at driver dispatch or even at Ready To Boot. This makes it unsafe for us to check for ACPI presence in the UEFI system config table in a Ready To Boot callback, in order to decide about exposing the DT. Cc: Ard Biesheuvel Cc: Leif Lindholm Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Laszlo Ersek --- ArmVirtPkg/ArmVirtPkg.dec | 10 ++++++++++ ArmVirtPkg/ArmVirtQemu.dsc | 5 +++++ ArmVirtPkg/FdtClientDxe/FdtClientDxe.inf | 5 +++-- ArmVirtPkg/FdtClientDxe/FdtClientDxe.c | 16 +++++----------- 4 files changed, 23 insertions(+), 13 deletions(-) diff --git a/ArmVirtPkg/ArmVirtPkg.dec b/ArmVirtPkg/ArmVirtPkg.dec index efe83a383d55..a5ec42166445 100644 --- a/ArmVirtPkg/ArmVirtPkg.dec +++ b/ArmVirtPkg/ArmVirtPkg.dec @@ -58,3 +58,13 @@ [PcdsFixedAtBuild, PcdsPatchableInModule] # EFI_VT_100_GUID. # gArmVirtTokenSpaceGuid.PcdTerminalTypeGuidBuffer|{0x65, 0x60, 0xA6, 0xDF, 0x19, 0xB4, 0xD3, 0x11, 0x9A, 0x2D, 0x00, 0x90, 0x27, 0x3F, 0xC1, 0x4D}|VOID*|0x00000007 + +[PcdsFeatureFlag] + # + # Pure ACPI boot + # + # Inhibit installation of the FDT as a configuration table if this feature + # PCD is TRUE. Otherwise, the OS is presented with both a DT and an ACPI + # description of the platform, and it is up to the OS to choose. + # + gArmVirtTokenSpaceGuid.PcdPureAcpiBoot|FALSE|BOOLEAN|0x0000000a diff --git a/ArmVirtPkg/ArmVirtQemu.dsc b/ArmVirtPkg/ArmVirtQemu.dsc index 0bbbe4a7aa4a..d6b3c0db5530 100644 --- a/ArmVirtPkg/ArmVirtQemu.dsc +++ b/ArmVirtPkg/ArmVirtQemu.dsc @@ -34,6 +34,7 @@ [Defines] # -D FLAG=VALUE # DEFINE SECURE_BOOT_ENABLE = FALSE + DEFINE PURE_ACPI_BOOT_ENABLE = FALSE !include ArmVirtPkg/ArmVirt.dsc.inc @@ -94,6 +95,10 @@ [PcdsFeatureFlag.common] gEfiMdeModulePkgTokenSpaceGuid.PcdConOutGopSupport|TRUE gEfiMdeModulePkgTokenSpaceGuid.PcdConOutUgaSupport|FALSE +!if $(PURE_ACPI_BOOT_ENABLE) == TRUE + gArmVirtTokenSpaceGuid.PcdPureAcpiBoot|TRUE +!endif + [PcdsFixedAtBuild.common] gArmPlatformTokenSpaceGuid.PcdCoreCount|1 !if $(ARCH) == AARCH64 diff --git a/ArmVirtPkg/FdtClientDxe/FdtClientDxe.inf b/ArmVirtPkg/FdtClientDxe/FdtClientDxe.inf index 9861f41e968b..00017727c32c 100644 --- a/ArmVirtPkg/FdtClientDxe/FdtClientDxe.inf +++ b/ArmVirtPkg/FdtClientDxe/FdtClientDxe.inf @@ -37,16 +37,17 @@ [LibraryClasses] HobLib UefiBootServicesTableLib UefiDriverEntryPoint - UefiLib [Protocols] gFdtClientProtocolGuid ## PRODUCES [Guids] - gEfiAcpi20TableGuid gEfiEventReadyToBootGuid gFdtHobGuid gFdtTableGuid +[FeaturePcd] + gArmVirtTokenSpaceGuid.PcdPureAcpiBoot + [Depex] TRUE diff --git a/ArmVirtPkg/FdtClientDxe/FdtClientDxe.c b/ArmVirtPkg/FdtClientDxe/FdtClientDxe.c index 21c1074e331c..4cf79f70cb2a 100644 --- a/ArmVirtPkg/FdtClientDxe/FdtClientDxe.c +++ b/ArmVirtPkg/FdtClientDxe/FdtClientDxe.c @@ -17,11 +17,9 @@ #include #include #include -#include #include #include -#include #include #include #include @@ -318,16 +316,12 @@ OnReadyToBoot ( ) { EFI_STATUS Status; - VOID *Table; - // - // Only install the FDT as a configuration table if we are not exposing - // ACPI 2.0 (or later) tables. Note that the legacy ACPI table GUID has - // no meaning on ARM since we need at least ACPI 5.0 support, and the - // 64-bit ACPI 2.0 table GUID is mandatory in that case. - // - Status = EfiGetSystemConfigurationTable (&gEfiAcpi20TableGuid, &Table); - if (EFI_ERROR (Status) || Table == NULL) { + if (!FeaturePcdGet (PcdPureAcpiBoot)) { + // + // Only install the FDT as a configuration table if we want to leave it up + // to the OS to decide whether it prefers ACPI over DT. + // Status = gBS->InstallConfigurationTable (&gFdtTableGuid, mDeviceTreeBase); ASSERT_EFI_ERROR (Status); } -- 2.9.3