From patchwork Thu Feb 13 20:23:28 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Berger X-Patchwork-Id: 11381243 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 18C2A109A for ; Thu, 13 Feb 2020 20:23:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 00CE924684 for ; Thu, 13 Feb 2020 20:23:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727927AbgBMUXi (ORCPT ); Thu, 13 Feb 2020 15:23:38 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:57854 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727652AbgBMUXi (ORCPT ); Thu, 13 Feb 2020 15:23:38 -0500 Received: from pps.filterd (m0098399.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 01DKLcOA139557; Thu, 13 Feb 2020 15:23:33 -0500 Received: from ppma02dal.us.ibm.com (a.bd.3ea9.ip4.static.sl-reverse.com [169.62.189.10]) by mx0a-001b2d01.pphosted.com with ESMTP id 2y4j86wp1u-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 13 Feb 2020 15:23:33 -0500 Received: from pps.filterd (ppma02dal.us.ibm.com [127.0.0.1]) by ppma02dal.us.ibm.com (8.16.0.27/8.16.0.27) with SMTP id 01DKKRfR005228; Thu, 13 Feb 2020 20:23:32 GMT Received: from b01cxnp22036.gho.pok.ibm.com (b01cxnp22036.gho.pok.ibm.com [9.57.198.26]) by ppma02dal.us.ibm.com with ESMTP id 2y5bc0h3ed-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 13 Feb 2020 20:23:32 +0000 Received: from b01ledav004.gho.pok.ibm.com (b01ledav004.gho.pok.ibm.com [9.57.199.109]) by b01cxnp22036.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 01DKNV4411207330 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 13 Feb 2020 20:23:31 GMT Received: from b01ledav004.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 91187112066; Thu, 13 Feb 2020 20:23:31 +0000 (GMT) Received: from b01ledav004.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 79CB5112064; Thu, 13 Feb 2020 20:23:31 +0000 (GMT) Received: from sbct-3.pok.ibm.com (unknown [9.47.158.153]) by b01ledav004.gho.pok.ibm.com (Postfix) with ESMTP; Thu, 13 Feb 2020 20:23:31 +0000 (GMT) From: Stefan Berger 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 Subject: [PATCH v2 3/4] tpm: Implement tpm2_init to call when TPM_OPS_AUTO_STARTUP is not set Date: Thu, 13 Feb 2020 15:23:28 -0500 Message-Id: <20200213202329.898607-4-stefanb@linux.vnet.ibm.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200213202329.898607-1-stefanb@linux.vnet.ibm.com> References: <20200213202329.898607-1-stefanb@linux.vnet.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138,18.0.572 definitions=2020-02-13_08:2020-02-12,2020-02-13 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 bulkscore=0 phishscore=0 priorityscore=1501 lowpriorityscore=0 mlxscore=0 impostorscore=0 malwarescore=0 spamscore=0 mlxlogscore=999 clxscore=1015 suspectscore=1 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2001150001 definitions=main-2002130143 Sender: linux-integrity-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-integrity@vger.kernel.org From: Stefan Berger Implement tpm2_init() that gets the TPM 2 timeouts and command durations and command code attributes. This function is to be called in case the TPM_OPS_AUTO_STARTUP flag is not set and therefore tpm2_auto_startup() is not called. Signed-off-by: Stefan Berger --- drivers/char/tpm/tpm-interface.c | 5 ++++- drivers/char/tpm/tpm.h | 1 + drivers/char/tpm/tpm2-cmd.c | 14 ++++++++++++++ 3 files changed, 19 insertions(+), 1 deletion(-) diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c index a438b1206fcb..cca0e542172d 100644 --- a/drivers/char/tpm/tpm-interface.c +++ b/drivers/char/tpm/tpm-interface.c @@ -371,8 +371,11 @@ int tpm_auto_startup(struct tpm_chip *chip) { int rc; - if (!(chip->ops->flags & TPM_OPS_AUTO_STARTUP)) + if (!(chip->ops->flags & TPM_OPS_AUTO_STARTUP)) { + if (chip->flags & TPM_CHIP_FLAG_TPM2) + return tpm2_init(chip); return 0; + } if (chip->flags & TPM_CHIP_FLAG_TPM2) rc = tpm2_auto_startup(chip); diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h index 5620747da0cf..895f8a1e17d2 100644 --- a/drivers/char/tpm/tpm.h +++ b/drivers/char/tpm/tpm.h @@ -222,6 +222,7 @@ ssize_t tpm2_get_tpm_pt(struct tpm_chip *chip, u32 property_id, u32 *value, const char *desc); ssize_t tpm2_get_pcr_allocation(struct tpm_chip *chip); +int tpm2_init(struct tpm_chip *chip); int tpm2_auto_startup(struct tpm_chip *chip); void tpm2_shutdown(struct tpm_chip *chip, u16 shutdown_type); unsigned long tpm2_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal); diff --git a/drivers/char/tpm/tpm2-cmd.c b/drivers/char/tpm/tpm2-cmd.c index 13696deceae8..d5b4b0449c23 100644 --- a/drivers/char/tpm/tpm2-cmd.c +++ b/drivers/char/tpm/tpm2-cmd.c @@ -709,6 +709,20 @@ static int tpm2_startup(struct tpm_chip *chip) return rc; } +/** + * tpm2_init - Get timeouts and command code attributes + * in case tpm2_auto_startup is not used. + * @chip: TPM chip to use + * + * Return 0 on success, < 0 in case of fatal error. + */ +int tpm2_init(struct tpm_chip *chip) +{ + tpm2_get_timeouts(chip); + + return tpm2_get_cc_attrs_tbl(chip); +} + /** * tpm2_auto_startup - Perform the standard automatic TPM initialization * sequence