From: "Jorge Ramirez-Ortiz, Foundries" <jorge@foundries.io>
To: zohar@linux.ibm.com, dmitry.kasatkin@gmail.com,
jmorris@namei.org, serge@hallyn.com
Cc: linux-integrity@vger.kernel.org,
linux-security-module@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: ima - wait for tpm load
Date: Thu, 10 Jun 2021 09:16:33 +0200 [thread overview]
Message-ID: <20210610071633.GA30216@trex> (raw)
I am enabling IMA on a ZynqMP based platform using an SPI based TPM
from Infineon.
The SPI TPM driver is built-in but since the IMA is initalized from a
late_initcall, IMA never finds the TPM.
Is there a recomended way to work around this issue?
fio@uz3cg-dwg:~$ dmesg | grep tpm
[ 3.381181] tpm_tis_spi spi1.1: 2.0 TPM (device-id 0x1B, rev-id 22)
[ 3.423608] tpm tpm0: A TPM error (256) occurred attempting the self test
[ 3.430406] tpm tpm0: starting up the TPM manually
fio@uz3cg-dwg:~$ dmesg | grep ima
[ 3.525741] ima: No TPM chip found, activating TPM-bypass!
[ 3.531233] ima: Allocated hash algorithm: sha1
TIA
jorge
next reply other threads:[~2021-06-10 7:17 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-10 7:16 Jorge Ramirez-Ortiz, Foundries [this message]
2021-06-10 14:19 ` ima - wait for tpm load Mimi Zohar
2021-06-10 15:18 ` Jorge Ramirez-Ortiz, Foundries
2021-06-10 20:31 ` Mimi Zohar
2021-06-28 22:04 ` Ken Goldman
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