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Mon, 7 Aug 2023 19:25:44 GMT Received: from smtpav03.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 6A97F58060; Mon, 7 Aug 2023 19:25:44 +0000 (GMT) Received: from smtpav03.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 384045806A; Mon, 7 Aug 2023 19:25:44 +0000 (GMT) Received: from slate16.aus.stglabs.ibm.com (unknown [9.61.130.18]) by smtpav03.dal12v.mail.ibm.com (Postfix) with ESMTP; Mon, 7 Aug 2023 19:25:44 +0000 (GMT) From: Eddie James To: u-boot@lists.denx.de Cc: ilias.apalodimas@linaro.org, sjg@chromium.org, xypron.glpk@gmx.de, joel@jms.id.au, eajames@linux.ibm.com Subject: [PATCH v11 6/8] doc: Add measured boot documentation Date: Mon, 7 Aug 2023 14:25:40 -0500 Message-Id: <20230807192542.90526-7-eajames@linux.ibm.com> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20230807192542.90526-1-eajames@linux.ibm.com> References: <20230807192542.90526-1-eajames@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: 4H6AcnTu7uMSiHNgKPwg0R8hpw7uRn4F X-Proofpoint-GUID: ChTBCH-NwpQ5M4-xkEvBHe1uH2_mv2td X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-08-07_21,2023-08-03_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 spamscore=0 malwarescore=0 bulkscore=0 priorityscore=1501 phishscore=0 impostorscore=0 adultscore=0 clxscore=1015 mlxscore=0 lowpriorityscore=0 mlxlogscore=935 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2306200000 definitions=main-2308070174 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 Briefly describe the feature and specify the requirements. Signed-off-by: Eddie James Reviewed-by: Simon Glass --- doc/usage/index.rst | 1 + doc/usage/measured_boot.rst | 23 +++++++++++++++++++++++ 2 files changed, 24 insertions(+) create mode 100644 doc/usage/measured_boot.rst diff --git a/doc/usage/index.rst b/doc/usage/index.rst index 388e59f173..64eb362aef 100644 --- a/doc/usage/index.rst +++ b/doc/usage/index.rst @@ -13,6 +13,7 @@ Use U-Boot partitions cmdline semihosting + measured_boot Shell commands -------------- diff --git a/doc/usage/measured_boot.rst b/doc/usage/measured_boot.rst new file mode 100644 index 0000000000..8357b1f480 --- /dev/null +++ b/doc/usage/measured_boot.rst @@ -0,0 +1,23 @@ +.. SPDX-License-Identifier: GPL-2.0+ + +Measured Boot +===================== + +U-Boot can perform a measured boot, the process of hashing various components +of the boot process, extending the results in the TPM and logging the +component's measurement in memory for the operating system to consume. + +Requirements +--------------------- + +* A hardware TPM 2.0 supported by the U-Boot drivers +* CONFIG_TPM=y +* CONFIG_MEASURED_BOOT=y +* Device-tree configuration of the TPM device to specify the memory area + for event logging. The TPM device node must either contain a phandle to + a reserved memory region or "linux,sml-base" and "linux,sml-size" + indicating the address and size of the memory region. An example can be + found in arch/sandbox/dts/test.dts +* The operating system must also be configured to use the memory regions + specified in the U-Boot device-tree in order to make use of the event + log. -- 2.39.3