From patchwork Mon Apr 8 22:52:31 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nayna Jain X-Patchwork-Id: 10890255 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id B9F5C1669 for ; Mon, 8 Apr 2019 22:52:54 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A2E0928813 for ; Mon, 8 Apr 2019 22:52:54 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9744028837; Mon, 8 Apr 2019 22:52:54 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1B43628813 for ; Mon, 8 Apr 2019 22:52:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726240AbfDHWwx (ORCPT ); Mon, 8 Apr 2019 18:52:53 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:50112 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726352AbfDHWwt (ORCPT ); Mon, 8 Apr 2019 18:52:49 -0400 Received: from pps.filterd (m0098399.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x38MnDr6139593 for ; Mon, 8 Apr 2019 18:52:48 -0400 Received: from e06smtp01.uk.ibm.com (e06smtp01.uk.ibm.com [195.75.94.97]) by mx0a-001b2d01.pphosted.com with ESMTP id 2rrd1157j8-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Mon, 08 Apr 2019 18:52:48 -0400 Received: from localhost by e06smtp01.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Mon, 8 Apr 2019 23:52:43 +0100 Received: from d06av22.portsmouth.uk.ibm.com (d06av22.portsmouth.uk.ibm.com [9.149.105.58]) by b06cxnps3075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x38MqfAQ55509016 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 8 Apr 2019 22:52:41 GMT Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id B1D7D4C04A; Mon, 8 Apr 2019 22:52:41 +0000 (GMT) Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 059964C040; Mon, 8 Apr 2019 22:52:40 +0000 (GMT) Received: from swastik.ibm.com (unknown [9.85.157.39]) by d06av22.portsmouth.uk.ibm.com (Postfix) with ESMTP; Mon, 8 Apr 2019 22:52:39 +0000 (GMT) From: Nayna Jain To: linuxppc-dev@ozlabs.org, linux-efi@vger.kernel.org, linux-integrity@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Michael Ellerman , Paul Mackerras , Benjamin Herrenschmidt , Ard Biesheuvel , Jeremy Kerr , Matthew Garret , Mimi Zohar , Claudio Carvalho , Nayna Jain Subject: [PATCH v2 0/3] powerpc: Enabling secure boot on powernv systems - Part 1 Date: Mon, 8 Apr 2019 18:52:31 -0400 X-Mailer: git-send-email 1.8.3.1 X-TM-AS-GCONF: 00 x-cbid: 19040822-4275-0000-0000-00000325B110 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19040822-4276-0000-0000-00003834C80A Message-Id: <1554763954-11795-1-git-send-email-nayna@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-04-08_10:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1011 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1904080164 Sender: linux-integrity-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-integrity@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch set is part of a series that implements secure boot on PowerNV systems. In order to verify the OS kernel on PowerNV, secure boot requires X.509 certificates trusted by the platform, the secure boot modes, and several other pieces of information. These are stored in secure variables controlled by OPAL, also known as OPAL secure variables. The IMA architecture specific policy support on Power is dependent on OPAL runtime services to access secure variables. Instead of directly accessing the OPAL runtime services, version 1[1] of this patch set relied upon the EFI hooks. This version drops that dependency and calls the OPAL runtime services directly. Exposing the OPAL secure variables to userspace will be posted as a separate patch set, allowing the IMA architecture specific policy on Power to be upstreamed independently. This patch set adds the following features: 1. Add support for OPAL Runtime API to access secure variables controlled by OPAL. 2. Define IMA arch-specific policies based on the secure boot state and mode of the system. On secure boot enabled powernv systems, the OS kernel signature will be verified by IMA appraisal. [1] https://patchwork.kernel.org/cover/10882149/ Changelog: v2: * Removed Patch 1: powerpc/include: Override unneeded early ioremap functions * Updated Subject line and patch description of the Patch 1 of this series * Removed dependency of OPAL_SECVAR on EFI, CPU_BIG_ENDIAN and UCS2_STRING * Changed OPAL APIs from static to non-static. Added opal-secvar.h for the same * Removed EFI hooks from opal_secvar.c * Removed opal_secvar_get_next(), opal_secvar_enqueue() and opal_query_variable_info() function * get_powerpc_sb_mode() in secboot.c now directly calls OPAL Runtime API rather than via EFI hooks. * Fixed log messages in get_powerpc_sb_mode() function. * Added dependency for PPC_SECURE_BOOT on configs PPC64 and OPAL_SECVAR * Replaced obj-$(CONFIG_IMA) with obj-$(CONFIG_PPC_SECURE_BOOT) in arch/powerpc/kernel/Makefile Claudio Carvalho (1): powerpc/powernv: Add support for OPAL_SECVAR_GET Nayna Jain (2): powerpc/powernv: detect the secure boot mode of the system powerpc: Add support to initialize ima policy rules arch/powerpc/Kconfig | 14 +++ arch/powerpc/include/asm/opal-api.h | 3 +- arch/powerpc/include/asm/opal-secvar.h | 18 ++++ arch/powerpc/include/asm/opal.h | 2 + arch/powerpc/include/asm/secboot.h | 21 ++++ arch/powerpc/kernel/Makefile | 1 + arch/powerpc/kernel/ima_arch.c | 54 ++++++++++ arch/powerpc/platforms/powernv/Kconfig | 6 ++ arch/powerpc/platforms/powernv/Makefile | 2 + arch/powerpc/platforms/powernv/opal-call.c | 1 + arch/powerpc/platforms/powernv/opal-secvar.c | 107 +++++++++++++++++++ arch/powerpc/platforms/powernv/secboot.c | 54 ++++++++++ include/linux/ima.h | 3 +- 13 files changed, 284 insertions(+), 2 deletions(-) create mode 100644 arch/powerpc/include/asm/opal-secvar.h create mode 100644 arch/powerpc/include/asm/secboot.h create mode 100644 arch/powerpc/kernel/ima_arch.c create mode 100644 arch/powerpc/platforms/powernv/opal-secvar.c create mode 100644 arch/powerpc/platforms/powernv/secboot.c