From patchwork Wed Jan 18 06:10:45 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Donnellan X-Patchwork-Id: 13105657 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1DAB8C004D4 for ; Wed, 18 Jan 2023 06:25:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229665AbjARGYy (ORCPT ); Wed, 18 Jan 2023 01:24:54 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54180 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229517AbjARGW3 (ORCPT ); Wed, 18 Jan 2023 01:22:29 -0500 Received: from mx0a-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 65E5E4E503; Tue, 17 Jan 2023 22:11:28 -0800 (PST) Received: from pps.filterd (m0098419.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 30I53Z1M015897; Wed, 18 Jan 2023 06:11:20 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding; s=pp1; bh=NbAGOkJyKTdzGBUpPMnKfY++xIugD/a7G/Z7957aSpQ=; b=kF0uXYNPWlFkxgF6my4vekuw5ZTt+xnwFLJW3MzsQPn1hoDYaPu9+zJ+tI5c/OHGY0fV AjawqG9JgBu1CQepciyLg+a4f5lsN2FdymCznyxAPpaXqGpyaf8S5a0BwpMdNGCTDh7m Q8tmxV4e1MNhKoRFX84GYq7YhjO3qTY1t+7vp8Ssfee3Wj9xDks/4frpFu3+fabm2n0e sxthGsE0ZWy9Ew+jA4yRjbw7suV2p0PuMfiTcuQAomGbU9ByKPcFU2yArwrbFwJEA4/V ahNe9U4ZpgHjDZS0SYuljf1ERmBNOSzzelwWQ0UGN1Q0mTAGGLWyXrY1c/aDz3WPV9lH vg== Received: from ppma06ams.nl.ibm.com (66.31.33a9.ip4.static.sl-reverse.com [169.51.49.102]) by mx0b-001b2d01.pphosted.com (PPS) with ESMTPS id 3n6a9ph6x5-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 18 Jan 2023 06:11:19 +0000 Received: from pps.filterd (ppma06ams.nl.ibm.com [127.0.0.1]) by ppma06ams.nl.ibm.com (8.17.1.19/8.17.1.19) with ESMTP id 30HNFFDG007008; Wed, 18 Jan 2023 06:11:18 GMT Received: from smtprelay03.fra02v.mail.ibm.com ([9.218.2.224]) by ppma06ams.nl.ibm.com (PPS) with ESMTPS id 3n3knfmtkm-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 18 Jan 2023 06:11:18 +0000 Received: from smtpav01.fra02v.mail.ibm.com (smtpav01.fra02v.mail.ibm.com [10.20.54.100]) by smtprelay03.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 30I6BFUL50790782 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 18 Jan 2023 06:11:15 GMT Received: from smtpav01.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id A43BB20040; Wed, 18 Jan 2023 06:11:15 +0000 (GMT) Received: from smtpav01.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 2884820043; Wed, 18 Jan 2023 06:11:15 +0000 (GMT) Received: from ozlabs.au.ibm.com (unknown [9.192.253.14]) by smtpav01.fra02v.mail.ibm.com (Postfix) with ESMTP; Wed, 18 Jan 2023 06:11:15 +0000 (GMT) Received: from jarvis-ozlabs-ibm-com.ozlabs.ibm.com (haven.au.ibm.com [9.192.254.114]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.au.ibm.com (Postfix) with ESMTPSA id 8EDF56097C; Wed, 18 Jan 2023 17:11:08 +1100 (AEDT) From: Andrew Donnellan To: linuxppc-dev@lists.ozlabs.org, linux-integrity@vger.kernel.org Cc: gregkh@linuxfoundation.org, gcwilson@linux.ibm.com, linux-kernel@vger.kernel.org, nayna@linux.ibm.com, ruscur@russell.cc, zohar@linux.ibm.com, mpe@ellerman.id.au, gjoyce@linux.ibm.com, sudhakar@linux.ibm.com, bgray@linux.ibm.com, erichte@linux.ibm.com Subject: [PATCH v3 20/24] powerpc/pseries: Add helpers to get PLPKS password Date: Wed, 18 Jan 2023 17:10:45 +1100 Message-Id: <20230118061049.1006141-21-ajd@linux.ibm.com> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230118061049.1006141-1-ajd@linux.ibm.com> References: <20230118061049.1006141-1-ajd@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: BOXolXkxoR4OCsa-PnXtg5y54IYkBD2d X-Proofpoint-ORIG-GUID: BOXolXkxoR4OCsa-PnXtg5y54IYkBD2d X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.219,Aquarius:18.0.923,Hydra:6.0.562,FMLib:17.11.122.1 definitions=2023-01-18_01,2023-01-17_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 suspectscore=0 mlxscore=0 phishscore=0 malwarescore=0 adultscore=0 clxscore=1015 priorityscore=1501 impostorscore=0 spamscore=0 mlxlogscore=748 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2301180051 Precedence: bulk List-ID: X-Mailing-List: linux-integrity@vger.kernel.org From: Russell Currey Add helper functions to get the PLPKS password. This will be used in a later patch to support passing the password between kernels over kexec. Signed-off-by: Russell Currey Signed-off-by: Andrew Donnellan --- v3: New patch --- arch/powerpc/include/asm/plpks.h | 11 +++++++++++ arch/powerpc/platforms/pseries/plpks.c | 10 ++++++++++ 2 files changed, 21 insertions(+) diff --git a/arch/powerpc/include/asm/plpks.h b/arch/powerpc/include/asm/plpks.h index 0c49969b0864..08355c89f5fd 100644 --- a/arch/powerpc/include/asm/plpks.h +++ b/arch/powerpc/include/asm/plpks.h @@ -171,6 +171,17 @@ u32 plpks_get_maxlargeobjectsize(void); */ u64 plpks_get_signedupdatealgorithms(void); +/** + * Returns the PLPKS password generated by the hypervisor. + * Should only be used to prepare a different OS to use the PLPKS, i.e. kexec. + */ +u8 *plpks_get_password(void); + +/** + * Returns the length of the PLPKS password in bytes. + */ +u16 plpks_get_passwordlen(void); + #endif // CONFIG_PSERIES_PLPKS #endif // _ASM_POWERPC_PLPKS_H diff --git a/arch/powerpc/platforms/pseries/plpks.c b/arch/powerpc/platforms/pseries/plpks.c index 5d9c6a3b2014..b3c7410a4f13 100644 --- a/arch/powerpc/platforms/pseries/plpks.c +++ b/arch/powerpc/platforms/pseries/plpks.c @@ -359,6 +359,16 @@ u64 plpks_get_signedupdatealgorithms(void) return signedupdatealgorithms; } +u8 *plpks_get_password(void) +{ + return ospassword; +} + +u16 plpks_get_passwordlen(void) +{ + return ospasswordlength; +} + bool plpks_is_available(void) { int rc;