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Fri, 24 Mar 2023 12:50:02 +0000 (GMT) Message-ID: Date: Fri, 24 Mar 2023 07:50:01 -0500 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:102.0) Gecko/20100101 Thunderbird/102.8.0 Subject: Re: [PATCH 1/3] docs: Add support for TPM devices over I2C bus Content-Language: en-US To: =?UTF-8?Q?C=c3=a9dric_Le_Goater?= , Ninad Palsule , qemu-devel@nongnu.org Cc: joel@jms.id.au, andrew@aj.id.au, stefanb@linux.ibm.com References: <20230323030119.2113570-1-ninad@linux.ibm.com> <20230323030119.2113570-2-ninad@linux.ibm.com> <026d8d44-c698-189e-155d-ac9c23c4361b@linux.vnet.ibm.com> From: Ninad Palsule In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: rbSzoMPcY4ibIWKy30W7j9Wruc6MUHIA X-Proofpoint-GUID: rbSzoMPcY4ibIWKy30W7j9Wruc6MUHIA Content-Transfer-Encoding: 8bit X-Proofpoint-UnRewURL: 0 URL was un-rewritten MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.942,Hydra:6.0.573,FMLib:17.11.170.22 definitions=2023-03-24_07,2023-03-24_01,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 phishscore=0 impostorscore=0 adultscore=0 lowpriorityscore=0 priorityscore=1501 malwarescore=0 mlxscore=0 bulkscore=0 suspectscore=0 spamscore=0 mlxlogscore=999 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2303200000 definitions=main-2303240102 Received-SPF: none client-ip=148.163.158.5; envelope-from=ninad@linux.vnet.ibm.com; helo=mx0b-001b2d01.pphosted.com X-Spam_score_int: -19 X-Spam_score: -2.0 X-Spam_bar: -- X-Spam_report: (-2.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, NICE_REPLY_A=-0.001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_NONE=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: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On 3/24/23 3:01 AM, Cédric Le Goater wrote: > On 3/24/23 06:11, Ninad Palsule wrote: >> Hello Cedric, >> >> Joel helped me to configure the device and we are able to configure >> tpm device on ast2600-evb. >> >> I will include this example in the documentation. >> >> # uname -a >> Linux ast2600-evb 6.1.15 #1 SMP Thu Mar 23 20:48:29 CDT 2023 armv7l >> GNU/Linux >> # cat /etc/os-release >> NAME=Buildroot >> VERSION=2023.02-dirty >> ID=buildroot >> VERSION_ID=2023.02 >> PRETTY_NAME="Buildroot 2023.02" >> >> # echo tpm_tis_i2c 0x2e > /sys/bus/i2c/devices/i2c-12/new_device >> [   59.681684] tpm_tis_i2c 12-002e: 2.0 TPM (device-id 0x1, rev-id 1) >> [   59.703190] tpm tpm0: A TPM error (256) occurred attempting the >> self test >> [   59.705215] tpm tpm0: starting up the TPM manually >> [   59.892917] i2c i2c-12: new_device: Instantiated device >> tpm_tis_i2c at 0x2e >> # cd /sys/class/tpm/tpm0 >> # ls >> dev                pcr-sha256         power              uevent >> device             pcr-sha384         subsystem >> pcr-sha1           pcr-sha512         tpm_version_major > > > Nice. Did you need any special support in the kernel ? > > I could update this image for avocado tests : > > https://github.com/legoater/qemu-aspeed-boot/tree/master/images/ast2600-evb/buildroot-2023.02 Kernel need a TPM i2c driver support. I built it with following head on dev-6.1 branch. You also need to run "echo" command I mentioned above to instantiate the device. Also start the swtpm as provided in my earlier mail. $ git rev-parse HEAD 0e94476a8892056a9242bcd75e59e7d2b92ac435 Thanks, Ninad > > Thanks, > > C.