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a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1771334168; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=EcR/wmz61knddkhHpK43twBnk2G4V4N9RjpoKjlZ6EQ=; b=jJSDljr02jwfFgVxeCeIriJCl5JGIVc8zEEcSwsHIhHcLu5NbiN7gvvIPVtHV7iGocJl1Z D9ORnlu+Hhz0nTox79svUKc5AG5vds4zMJsN2l8RJVPDYXumPnpHtDndHsalQgTktHKrfT 2xSwxkpI9aPllH4XDRyDnMGHffauJQI= X-MC-Unique: CiYnRRp5Nr-Qflk7OhB2Ug-1 X-Mimecast-MFC-AGG-ID: CiYnRRp5Nr-Qflk7OhB2Ug_1771334164 From: Andrea Bolognani To: qemu-devel@nongnu.org Cc: Gerd Hoffmann , Markus Armbruster , Kashyap Chamarthy , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , Pierrick Bouvier , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Subject: [PATCH v3 1/1] docs/interop/firmware: Add 'uefi-vars' member for FirmwareMappingMemory Date: Tue, 17 Feb 2026 14:15:53 +0100 Message-ID: <20260217131553.313772-2-abologna@redhat.com> In-Reply-To: <20260217131553.313772-1-abologna@redhat.com> References: <20260217131553.313772-1-abologna@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.4 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.129.124; envelope-from=abologna@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.043, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1771334212541154100 This allows describing firmwares that are loaded as ROMs but also support a UEFI variable store. This is the case for edk2 builds that are set up to use the uefi-vars QEMU device, and whose descriptors would advertise the 'host-uefi-vars' feature. Signed-off-by: Andrea Bolognani Reviewed-by: Daniel P. Berrang=C3=A9 Acked-by: Markus Armbruster --- docs/interop/firmware.json | 43 +++++++++++++++++++++++++++++++++++++- 1 file changed, 42 insertions(+), 1 deletion(-) diff --git a/docs/interop/firmware.json b/docs/interop/firmware.json index da0362a2c0..3c71914a52 100644 --- a/docs/interop/firmware.json +++ b/docs/interop/firmware.json @@ -369,6 +369,39 @@ { 'struct' : 'FirmwareMappingKernel', 'data' : { 'filename' : 'str' } } =20 +## +# @FirmwareMemoryUefiVars: +# +# Contains information needed to set up the "uefi-vars" device +# to provide UEFI variable store access to the firmware. +# +# @template: The path to the UEFI JSON variable store template +# compatible with the firmware. Management software instantiates +# an individual copy -- a specific UEFI variable store file -- +# from @template for each new virtual machine definition created. +# @template itself is never mapped into virtual machines, only +# individual copies of it are. The file created by copying +# @template is used for persistently storing the non-volatile +# UEFI variables of a virtual machine definition. The +# corresponding QEMU command line options are +# +# :: +# +# -device uefi-vars-x64,jsonfile=3DPATH_TO_PRIVATE_FILE +# +# for x86_64 virtual machines, or +# +# :: +# +# -device uefi-vars-sysbus,jsonfile=3DPATH_TO_PRIVATE_FILE +# +# for other UEFI architectures (aarch64, riscv64, loongarch64). +# +# Since: 11.0 +## +{ 'struct' : 'FirmwareMemoryUefiVars', + 'data' : { 'template' : 'str' }} + ## # @FirmwareMappingMemory: # @@ -380,10 +413,18 @@ # definitions. The corresponding QEMU command line option is # "-bios @filename". # +# @uefi-vars: Information specific to firmware builds that expect the +# "uefi-vars" device to be used to provide access to the UEFI +# variable store. If the mapping contains this member, the +# firmware descriptor must advertise both the @uefi interface +# from @FirmwareOSInterface and the @host-uefi-vars feature from +# @FirmwareFeature. (Since 11.0) +# # Since: 3.0 ## { 'struct' : 'FirmwareMappingMemory', - 'data' : { 'filename' : 'str' } } + 'data' : { 'filename' : 'str', + '*uefi-vars' : 'FirmwareMemoryUefiVars' } } =20 ## # @FirmwareMappingIgvm: --=20 2.53.0