From patchwork Thu Nov 14 10:07:40 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Liju-clr Chen X-Patchwork-Id: 13874822 Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B2D731F7097; Thu, 14 Nov 2024 10:08:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=210.61.82.184 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731578898; cv=none; b=f5sfV7xLReU3m/FRFSED11bIi4KzkVJcH45RXGHgXWeld70r4CDcY6CtcLyl8K7zK8B/ka3UnutsKhk4+TaMSH1Yxk2iIyD2QoWo1s/MtDtN3HGk2KfxANmlfz/uNg/x4Rc01BhfFzzHfr5lQ5JhLEM91IHy0KEAQb7FSLfcCZk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731578898; c=relaxed/simple; bh=+T7zJWsnL96H+zjaNN/L5YeRWGH7NRHm/d1ZxqSbAGM=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=agKDcijUeqaXG1ra7uQgRTOUw/Q9qr1zQMcX+Smscte8BhmsCVub0bqkMth0Aj8fy6SuQtewgI4kVNMlmJGt+vVYCYyJAGXHXSUedz/HvGLh8YW+uSHb8Qj0SbFi7QmOyT2DMIbNAqUZ6A1Str6439es+IYJibsMeQLY9sWiziA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=mediatek.com; spf=pass smtp.mailfrom=mediatek.com; dkim=pass (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b=cqo8o8Hz; arc=none smtp.client-ip=210.61.82.184 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=mediatek.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=mediatek.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="cqo8o8Hz" X-UUID: 5693531ea27011efbd192953cf12861f-20241114 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=NeZfIxfE73lDEasKhP0FSNvN7LjURM3GXgvN0vxDtZk=; b=cqo8o8HzZGQVlMvcaGOhnqZ8EpllxXW+K97JLT3fvIPUvpT8FpsZR+4eQmg37ixW5UcwCFNksmPtpwFJiydNHN+0ZGNawqhenScC6R/rv5br54WejBqSoUYC6PFtiBilhSsV9Tij0uEkkuUUh/fWQcneQ0JVHPySReEC7epbtDI=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.42,REQID:0f8530bc-7c50-4ed0-8503-ec875d049a85,IP:0,U RL:25,TC:0,Content:-5,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTIO N:release,TS:20 X-CID-META: VersionHash:b0fcdc3,CLOUDID:d66b1307-6ce0-4172-9755-bd2287e50583,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:81|82|102,TC:nil,Content:0,EDM:-3,IP :nil,URL:11|1,File:nil,RT:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV :0,LES:1,SPR:NO,DKR:0,DKP:0,BRR:0,BRE:0,ARC:0 X-CID-BVR: 0 X-CID-BAS: 0,_,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR,TF_CID_SPAM_ULN X-UUID: 5693531ea27011efbd192953cf12861f-20241114 Received: from mtkmbs13n1.mediatek.inc [(172.21.101.193)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 388720392; Thu, 14 Nov 2024 18:08:04 +0800 Received: from mtkmbs13n1.mediatek.inc (172.21.101.193) by MTKMBS09N2.mediatek.inc (172.21.101.94) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.26; Thu, 14 Nov 2024 02:08:03 -0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs13n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Thu, 14 Nov 2024 18:08:03 +0800 From: Liju-clr Chen To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jonathan Corbet , Catalin Marinas , Will Deacon , Steven Rostedt , Masami Hiramatsu , Mathieu Desnoyers , Richard Cochran , Matthias Brugger , AngeloGioacchino Del Regno , Liju-clr Chen , Yingshiuan Pan , Ze-yu Wang CC: , , , , , , , Shawn Hsiao , PeiLun Suei , Chi-shen Yeh , Kevenny Hsieh Subject: [PATCH v13 03/25] dt-bindings: hypervisor: Add MediaTek GenieZone hypervisor Date: Thu, 14 Nov 2024 18:07:40 +0800 Message-ID: <20241114100802.4116-4-liju-clr.chen@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20241114100802.4116-1-liju-clr.chen@mediatek.com> References: <20241114100802.4116-1-liju-clr.chen@mediatek.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MTK: N From: Yingshiuan Pan Add documentation for GenieZone(gzvm) node. This node informs gzvm driver to start probing if proprietary geniezone hypervisor firmware is available and capable of executing virtual machine operations. [Reason to use dt solution] The GenieZone hypervisor acts as a vendor firmware to enable platform virtualization, offering an implementation that is independent of Linux-specific implementations. - Previously, our approach involved probing via hypercalls to detect the presence of our hypervisor firmware. However, this method raised concerns about potential impacts on all systems, including those without the embedded GenieZone hypervisor.[1] - By utilizing the device tree solution, we can accurately identify the GenieZone hypervisor's presence without relying on hypercalls, ensuring a more targeted and efficient detection process that minimizes the risk of unintended consequences on non-GenieZone systems. [1] https://lore.kernel.org/all/2fe0c7f9-55fc-ae63-3631-8526a0212ccd@linaro.org/ Signed-off-by: Yingshiuan Pan Signed-off-by: Yi-De Wu Signed-off-by: Liju Chen --- .../bindings/firmware/mediatek,geniezone.yaml | 34 +++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 35 insertions(+) create mode 100644 Documentation/devicetree/bindings/firmware/mediatek,geniezone.yaml diff --git a/Documentation/devicetree/bindings/firmware/mediatek,geniezone.yaml b/Documentation/devicetree/bindings/firmware/mediatek,geniezone.yaml new file mode 100644 index 000000000000..c9610ed27a1a --- /dev/null +++ b/Documentation/devicetree/bindings/firmware/mediatek,geniezone.yaml @@ -0,0 +1,34 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/firmware/mediatek,geniezone.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: MediaTek GenieZone hypervisor + +maintainers: + - Yingshiuan Pan + +description: + GenieZone is a proprietary type-I hypervisor firmware developed by MediaTek, + providing an isolated execution environment for mTEE (MediaTek Trusted + Execution Environment) and AVF (Android Virtualization Framework) virtual + machines. This binding facilitates the integration of GenieZone into the + Android Virtualization Framework (AVF) with Crosvm as the VMM. The driver + exposes hypervisor control interfaces to the VMM for managing virtual + machine lifecycles and assisting virtual device emulation. + +properties: + compatible: + const: mediatek,geniezone + +required: + - compatible + +additionalProperties: false + +examples: + - | + hypervisor { + compatible = "mediatek,geniezone"; + }; diff --git a/MAINTAINERS b/MAINTAINERS index bd119e707b7f..291f46017f3f 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -9675,6 +9675,7 @@ GENIEZONE HYPERVISOR DRIVER M: Yingshiuan Pan M: Ze-Yu Wang M: Liju Chen +F: Documentation/devicetree/bindings/firmware/mediatek,geniezone.yaml F: Documentation/virt/geniezone/ GENWQE (IBM Generic Workqueue Card)