Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D034DC433EF for ; Wed, 15 Dec 2021 15:04:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243641AbhLOPEe (ORCPT ); Wed, 15 Dec 2021 10:04:34 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58488 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243578AbhLOPEc (ORCPT ); Wed, 15 Dec 2021 10:04:32 -0500 Received: from mail-wr1-x44a.google.com (mail-wr1-x44a.google.com [IPv6:2a00:1450:4864:20::44a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DE33BC06173E for ; Wed, 15 Dec 2021 07:04:31 -0800 (PST) Received: by mail-wr1-x44a.google.com with SMTP id y4-20020adfd084000000b00186b16950f3so5952107wrh.14 for ; Wed, 15 Dec 2021 07:04:31 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=pyL+iMUMyBYszI38fgaNUchU9lpO/cjF5JBVAbs2Psc=; b=jlny/QcwcuEy5ev6XF2gP0ZBso3jt7gXEdzDliPUANM04QWypH6wlZ0wyaCNau6Tgg SQh1xauWbFMQRmMFhJWUMcsKaVIlp4IsySmN8/e20MtqeOFxLIVGH3aV2xb/6ZJA+w5k q/cE5KPjJ3cM9NZvSH68lANma2fPKBEKATrMobbXN2LvF4tjhztzCWf7AbcTgckOU7Jz zU8ncv5eKlZ77wWGyRWbn/2VYv7lD2EnT1e3rsr0W9gn2vml/097H3T6P6Zf5EUqhM2a 42GjqdV3oQ307hbwL7ANGeNvvcH6gRJtLZV/qUlkOwI0wHqaXou+TeTDb1yEkAvB6cDJ Du2g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=pyL+iMUMyBYszI38fgaNUchU9lpO/cjF5JBVAbs2Psc=; b=UIiW/X7fEOultBGGTxn5NB5qoOkfEKLG/PYyCBQdWaQ6Al+rsci32usgt5SOkIMxTC 56qo89m4GSoA2OFaGPzb0T1eFXvXmUX2Jy5Wrov8gEMbja55BaEru1k37M7iOGAUAmw0 Vtn4Ea4BPzYHn8CLCJG2VSs5Eyx2lw1Nx58VPGmjozGKTMzFx4odQHrBUh6vSnj7LfGO ioQLlnGkRJejdCjyZhxRJGOTZByAbcvNoH9zuv2z/hh4sX+La9hQqdhD9x0Vq6AquMMa 5CTS4sgR4PqSsmzAHIHN4GvGtcdC1hO4aAkLhc5EFaUkPftVsC+tP6fOxLcEb9z7w522 7y3Q== X-Gm-Message-State: AOAM532BPJUGGufOWiLGt5wvjD2kmdOhhHYSIoZMIR0Iza8eSz26O4HP 0m8sCvvf8uthWhEWOk6Gm56DR34rKX1FPA== X-Google-Smtp-Source: ABdhPJzmS5YOOsuMIx+1NQ4DCD2saBVZYtr9JzL58yxt+iEGpqfttEKgmbfGQXpC99XWdPEIZ7pNlkYPBn5VBw== X-Received: from dbrazdil.lon.corp.google.com ([2a00:79e0:d:209:8505:8095:9f82:42b7]) (user=dbrazdil job=sendgmr) by 2002:a5d:4591:: with SMTP id p17mr4712734wrq.483.1639580670302; Wed, 15 Dec 2021 07:04:30 -0800 (PST) Date: Wed, 15 Dec 2021 15:04:09 +0000 In-Reply-To: <20211215150410.1707849-1-dbrazdil@google.com> Message-Id: <20211215150410.1707849-2-dbrazdil@google.com> Mime-Version: 1.0 References: <20211215150410.1707849-1-dbrazdil@google.com> X-Mailer: git-send-email 2.34.1.173.g76aa8bc2d0-goog Subject: [PATCH v4 1/2] dt-bindings: firmware: Add Open Profile for DICE From: David Brazdil To: Greg Kroah-Hartman Cc: Rob Herring , Arnd Bergmann , David Brazdil , Will Deacon , Andrew Scull , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add DeviceTree bindings for Open Profile for DICE, an open protocol for measured boot. Firmware uses DICE to measure the hardware/software combination and generates Compound Device Identifier (CDI) certificates. These are stored in memory and the buffer is described in the DT as a reserved memory region referenced by a compatible device node. Signed-off-by: David Brazdil --- .../bindings/firmware/google,open-dice.yaml | 51 +++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 Documentation/devicetree/bindings/firmware/google,open-dice.yaml diff --git a/Documentation/devicetree/bindings/firmware/google,open-dice.yaml b/Documentation/devicetree/bindings/firmware/google,open-dice.yaml new file mode 100644 index 000000000000..1aa69f381b8c --- /dev/null +++ b/Documentation/devicetree/bindings/firmware/google,open-dice.yaml @@ -0,0 +1,51 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/firmware/google,open-dice.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Open Profile for DICE Device Tree Bindings + +description: | + This binding represents a reserved memory region containing data + generated by the Open Profile for DICE protocol. + + See https://pigweed.googlesource.com/open-dice/ + +maintainers: + - David Brazdil + +properties: + compatible: + enum: + - google,open-dice + + memory-region: + maxItems: 1 + description: | + phandle to the reserved memory node to be associated with the device + The reserved memory node should be defined as per the bindings, + Documentation/devicetree/bindings/reserved-memory/reserved-memory.yaml + +required: + - compatible + - memory-region + +additionalProperties: false + +examples: + - | + reserved-memory { + #address-cells = <2>; + #size-cells = <1>; + + dice_reserved: dice@12340000 { + reg = <0x00 0x12340000 0x2000>; + no-map; + }; + }; + + dice { + compatible = "google,open-dice"; + memory-region = <&dice_reserved>; + }; -- 2.34.1.173.g76aa8bc2d0-goog