From: Stefan Berger <stefanb@linux.vnet.ibm.com> To: linux-integrity@vger.kernel.org Cc: aik@ozlabs.ru, david@gibson.dropbear.id.au, linux-kernel@vger.kernel.org, nayna@linux.vnet.ibm.com, gcwilson@linux.ibm.com, jgg@ziepe.ca, Stefan Berger <stefanb@linux.ibm.com> Subject: [PATCH v2 1/4] tpm: of: Handle IBM,vtpm20 case when getting log parameters Date: Thu, 13 Feb 2020 15:23:26 -0500 Message-ID: <20200213202329.898607-2-stefanb@linux.vnet.ibm.com> (raw) In-Reply-To: <20200213202329.898607-1-stefanb@linux.vnet.ibm.com> From: Stefan Berger <stefanb@linux.ibm.com> A vTPM 2.0 is identified by 'IBM,vtpm20' in the 'compatible' node in the device tree. Handle it in the same way as 'IBM,vtpm'. The vTPM 2.0's log is written in little endian format so that for this aspect we can rely on existing code. Signed-off-by: Stefan Berger <stefanb@linux.ibm.com> --- drivers/char/tpm/eventlog/of.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/char/tpm/eventlog/of.c b/drivers/char/tpm/eventlog/of.c index af347c190819..a31a625ad44e 100644 --- a/drivers/char/tpm/eventlog/of.c +++ b/drivers/char/tpm/eventlog/of.c @@ -17,6 +17,12 @@ #include "../tpm.h" #include "common.h" +static const char * const compatibles[] = { + "IBM,vtpm", + "IBM,vtpm20", + NULL +}; + int tpm_read_log_of(struct tpm_chip *chip) { struct device_node *np; @@ -51,7 +57,7 @@ int tpm_read_log_of(struct tpm_chip *chip) * endian format. For this reason, vtpm doesn't need conversion * but physical tpm needs the conversion. */ - if (of_property_match_string(np, "compatible", "IBM,vtpm") < 0) { + if (!of_device_compatible_match(np, compatibles)) { size = be32_to_cpup((__force __be32 *)sizep); base = be64_to_cpup((__force __be64 *)basep); } else { -- 2.23.0
next prev parent reply index Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-02-13 20:23 [PATCH v2 0/4] Enable vTPM 2.0 for the IBM vTPM driver Stefan Berger 2020-02-13 20:23 ` Stefan Berger [this message] 2020-02-25 16:54 ` [PATCH v2 1/4] tpm: of: Handle IBM,vtpm20 case when getting log parameters Jarkko Sakkinen 2020-02-13 20:23 ` [PATCH v2 2/4] tpm: ibmvtpm: Wait for buffer to be set before proceeding Stefan Berger 2020-02-25 16:57 ` Jarkko Sakkinen 2020-02-25 18:14 ` Stefan Berger 2020-02-26 15:00 ` Jarkko Sakkinen 2020-02-13 20:23 ` [PATCH v2 3/4] tpm: Implement tpm2_init to call when TPM_OPS_AUTO_STARTUP is not set Stefan Berger 2020-02-25 17:00 ` Jarkko Sakkinen 2020-02-25 18:20 ` Stefan Berger 2020-02-26 15:02 ` Jarkko Sakkinen 2020-02-26 17:35 ` Stefan Berger 2020-02-13 20:23 ` [PATCH v2 4/4] tpm: ibmvtpm: Add support for TPM 2 Stefan Berger 2020-02-19 19:23 ` [PATCH v2 0/4] Enable vTPM 2.0 for the IBM vTPM driver Stefan Berger 2020-02-20 19:59 ` Jarkko Sakkinen 2020-02-20 20:00 ` Jarkko Sakkinen
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