From patchwork Sat Aug 5 11:34:51 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sughosh Ganu X-Patchwork-Id: 1817302 X-Patchwork-Delegate: trini@ti.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de (client-ip=85.214.62.61; helo=phobos.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=) Received: from phobos.denx.de (phobos.denx.de [85.214.62.61]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-384) server-digest SHA384) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4RJ0sC6GNmz1yYC for ; Sat, 5 Aug 2023 21:36:15 +1000 (AEST) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id 2EBBA865DE; Sat, 5 Aug 2023 13:35:41 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Received: by phobos.denx.de (Postfix, from userid 109) id 2709586835; Sat, 5 Aug 2023 13:35:40 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de X-Spam-Level: X-Spam-Status: No, score=-1.2 required=5.0 tests=BAYES_00,SPF_HELO_NONE, SPF_SOFTFAIL autolearn=no autolearn_force=no version=3.4.2 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by phobos.denx.de (Postfix) with ESMTP id BD7BD867C9 for ; Sat, 5 Aug 2023 13:35:35 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: phobos.denx.de; spf=fail smtp.mailfrom=sughosh.ganu@linaro.org 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 D786811FB; Sat, 5 Aug 2023 04:36:17 -0700 (PDT) Received: from a076522.blr.arm.com (unknown [10.162.46.7]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 5BBF93F5A1; Sat, 5 Aug 2023 04:35:32 -0700 (PDT) From: Sughosh Ganu To: u-boot@lists.denx.de Cc: Heinrich Schuchardt , Ilias Apalodimas , Simon Glass , Takahiro Akashi , Malte Schmidt , Michal Simek , Tom Rini , Sughosh Ganu Subject: [PATCH v7 04/11] capsule: authenticate: Add capsule public key in platform's dtb Date: Sat, 5 Aug 2023 17:04:51 +0530 Message-Id: <20230805113458.1430239-5-sughosh.ganu@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230805113458.1430239-1-sughosh.ganu@linaro.org> References: <20230805113458.1430239-1-sughosh.ganu@linaro.org> MIME-Version: 1.0 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.39 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.8 at phobos.denx.de X-Virus-Status: Clean The EFI capsule authentication logic in u-boot expects the public key in the form of an EFI Signature List(ESL) to be provided as part of the platform's dtb. Currently, the embedding of the ESL file into the dtb needs to be done manually. Add a signature node in the u-boot dtsi file and include the public key through the capsule-key property. This file is per architecture, and is currently being added for sandbox and arm architectures. It will have to be added for other architectures which need to enable capsule authentication support. The path to the ESL file is specified through the CONFIG_EFI_CAPSULE_ESL_FILE symbol. Signed-off-by: Sughosh Ganu Signed-off-by: Simon Glass --- Changes since V6: * Populate the CONFIG_EFI_CAPSULE_ESL_FILE symbol for sandbox and sandbox_flattree which enable capsule authentication. Note: Simon Glass had asked me to rid of the CONFIG_EFI_HAVE_CAPSULE_SUPPORT ifdef used in the sandbox' u-boot.dtsi file. However, that results in the sandbox_vpl test failing in CI. Hence that check has been kept. arch/arm/dts/u-boot.dtsi | 14 ++++++++++++++ arch/sandbox/dts/u-boot.dtsi | 17 +++++++++++++++++ configs/sandbox_defconfig | 1 + configs/sandbox_flattree_defconfig | 1 + lib/efi_loader/Kconfig | 9 +++++++++ 5 files changed, 42 insertions(+) create mode 100644 arch/arm/dts/u-boot.dtsi create mode 100644 arch/sandbox/dts/u-boot.dtsi diff --git a/arch/arm/dts/u-boot.dtsi b/arch/arm/dts/u-boot.dtsi new file mode 100644 index 0000000000..4f31da4521 --- /dev/null +++ b/arch/arm/dts/u-boot.dtsi @@ -0,0 +1,14 @@ +// SPDX-License-Identifier: GPL-2.0+ +/** + * Devicetree file with miscellaneous nodes that will be included + * at build time into the DTB. Currently being used for including + * capsule related information. + */ + +#ifdef CONFIG_EFI_CAPSULE_AUTHENTICATE +/ { + signature { + capsule-key = /incbin/(CONFIG_EFI_CAPSULE_ESL_FILE); + }; +}; +#endif /* CONFIG_EFI_CAPSULE_AUTHENTICATE */ diff --git a/arch/sandbox/dts/u-boot.dtsi b/arch/sandbox/dts/u-boot.dtsi new file mode 100644 index 0000000000..60bd004937 --- /dev/null +++ b/arch/sandbox/dts/u-boot.dtsi @@ -0,0 +1,17 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Devicetree file with miscellaneous nodes that will be included + * at build time into the DTB. Currently being used for including + * capsule related information. + * + */ + +#ifdef CONFIG_EFI_HAVE_CAPSULE_SUPPORT +/ { +#ifdef CONFIG_EFI_CAPSULE_AUTHENTICATE + signature { + capsule-key = /incbin/(CONFIG_EFI_CAPSULE_ESL_FILE); + }; +#endif +}; +#endif /* CONFIG_EFI_HAVE_CAPSULE_SUPPORT */ diff --git a/configs/sandbox_defconfig b/configs/sandbox_defconfig index b6c4f735f2..779af4abc8 100644 --- a/configs/sandbox_defconfig +++ b/configs/sandbox_defconfig @@ -341,6 +341,7 @@ CONFIG_EFI_RUNTIME_UPDATE_CAPSULE=y CONFIG_EFI_CAPSULE_ON_DISK=y CONFIG_EFI_CAPSULE_FIRMWARE_RAW=y CONFIG_EFI_CAPSULE_AUTHENTICATE=y +CONFIG_EFI_CAPSULE_ESL_FILE="../../../board/sandbox/SIGNER.esl" CONFIG_EFI_SECURE_BOOT=y CONFIG_TEST_FDTDEC=y CONFIG_UNIT_TEST=y diff --git a/configs/sandbox_flattree_defconfig b/configs/sandbox_flattree_defconfig index 8aa295686d..0ca2e4a5ae 100644 --- a/configs/sandbox_flattree_defconfig +++ b/configs/sandbox_flattree_defconfig @@ -227,6 +227,7 @@ CONFIG_EFI_RUNTIME_UPDATE_CAPSULE=y CONFIG_EFI_CAPSULE_ON_DISK=y CONFIG_EFI_CAPSULE_FIRMWARE_FIT=y CONFIG_EFI_CAPSULE_AUTHENTICATE=y +CONFIG_EFI_CAPSULE_ESL_FILE="../../../board/sandbox/SIGNER.esl" CONFIG_UNIT_TEST=y CONFIG_UT_TIME=y CONFIG_UT_DM=y diff --git a/lib/efi_loader/Kconfig b/lib/efi_loader/Kconfig index a22e47616f..0d559ff3a1 100644 --- a/lib/efi_loader/Kconfig +++ b/lib/efi_loader/Kconfig @@ -235,6 +235,15 @@ config EFI_CAPSULE_MAX Select the max capsule index value used for capsule report variables. This value is used to create CapsuleMax variable. +config EFI_CAPSULE_ESL_FILE + string "Path to the EFI Signature List File" + default "" + depends on EFI_CAPSULE_AUTHENTICATE + help + Provides the absolute path to the EFI Signature List file which + will be embedded in the platform's device tree and used for + capsule authentication at the time of capsule update. + config EFI_DEVICE_PATH_TO_TEXT bool "Device path to text protocol" default y