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From: "Jorge Ramirez-Ortiz, Foundries" <>
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



             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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