From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from foss.arm.com (foss.arm.com [217.140.110.172])
 by mx.groups.io with SMTP id smtpd.web10.8549.1658500349766843723
 for <devel@edk2.groups.io>;
 Fri, 22 Jul 2022 07:32:29 -0700
Authentication-Results: mx.groups.io;
 dkim=missing; spf=pass (domain: arm.com, ip: 217.140.110.172, mailfrom: pierre.gondois@arm.com)
Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14])
	by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id D0147106F;
	Fri, 22 Jul 2022 07:32:29 -0700 (PDT)
Received: from pierre123.arm.com (pierre123.nice.arm.com [10.34.100.102])
	by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id C11FE3F70D;
	Fri, 22 Jul 2022 07:32:27 -0700 (PDT)
From: "PierreGondois" <pierre.gondois@arm.com>
To: devel@edk2.groups.io
Cc: Sami Mujawar <sami.mujawar@arm.com>,
	Leif Lindholm <quic_llindhol@quicinc.com>,
	Ard Biesheuvel <ardb+tianocore@kernel.org>,
	Rebecca Cran <rebecca@bsdio.com>,
	Michael D Kinney <michael.d.kinney@intel.com>,
	Liming Gao <gaoliming@byosoft.com.cn>,
	Jiewen Yao <jiewen.yao@intel.com>,
	Jian J Wang <jian.j.wang@intel.com>,
	Pierre Gondois <pierre.gondois@arm.com>
Subject: [PATCH v4 01/21] ArmPkg: PCD to select conduit for monitor calls
Date: Fri, 22 Jul 2022 16:31:33 +0200
Message-Id: <20220722143153.913585-2-Pierre.Gondois@arm.com>
X-Mailer: git-send-email 2.25.1
In-Reply-To: <20220722143153.913585-1-Pierre.Gondois@arm.com>
References: <20220722143153.913585-1-Pierre.Gondois@arm.com>
MIME-Version: 1.0
Content-Transfer-Encoding: quoted-printable

From: Sami Mujawar <sami.mujawar@arm.com>

Define a PCD 'PcdMonitorConduitHvc' to select the conduit to use for
monitor calls. PcdMonitorConduitHvc is defined as FALSE by default,
meaning the SMC conduit is enabled as default.

Adding PcdMonitorConduitHvc allows selection of HVC conduit to be used
by virtual firmware implementations.

Signed-off-by: Sami Mujawar <sami.mujawar@arm.com>
---
 ArmPkg/ArmPkg.dec | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/ArmPkg/ArmPkg.dec b/ArmPkg/ArmPkg.dec
index 9da1bbc9f216..bb5cbecbc228 100644
--- a/ArmPkg/ArmPkg.dec
+++ b/ArmPkg/ArmPkg.dec
@@ -2,7 +2,7 @@
 # ARM processor package.
 #
 # Copyright (c) 2009 - 2010, Apple Inc. All rights reserved.<BR>
-# Copyright (c) 2011 - 2021, ARM Limited. All rights reserved.
+# Copyright (c) 2011 - 2022, ARM Limited. All rights reserved.
 # Copyright (c) 2021, Ampere Computing LLC. All rights reserved.
 #
 #    SPDX-License-Identifier: BSD-2-Clause-Patent
@@ -132,6 +132,11 @@ [PcdsFeatureFlag.common]
   # Define if the GICv3 controller should use the GICv2 legacy
   gArmTokenSpaceGuid.PcdArmGicV3WithV2Legacy|FALSE|BOOLEAN|0x00000042
=20
+  ## Define the conduit to use for monitor calls.
+  # Default PcdMonitorConduitHvc =3D FALSE, conduit =3D SMC
+  # If PcdMonitorConduitHvc =3D TRUE, conduit =3D HVC
+  gArmTokenSpaceGuid.PcdMonitorConduitHvc|FALSE|BOOLEAN|0x00000047
+
 [PcdsFeatureFlag.ARM]
   # Whether to map normal memory as non-shareable. FALSE is the safe cho=
ice, but
   # TRUE may be appropriate to fix performance problems if you don't car=
e about
--=20
2.25.1