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Mon, 21 Apr 2025 16:34:41 +0000 (GMT) Received: from pps.filterd (phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com [127.0.0.1]) by phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com (8.18.1.2/8.18.1.2) with ESMTP id 53LFDpLV010212; Mon, 21 Apr 2025 16:34:41 GMT Received: from pps.reinject (localhost [127.0.0.1]) by phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com (PPS) with ESMTPS id 464298rfqb-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Mon, 21 Apr 2025 16:34:41 +0000 Received: from phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com (phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 53LGYeT2035636; Mon, 21 Apr 2025 16:34:40 GMT Received: from bur-virt-x6-2-100.us.oracle.com (bur-virt-x6-2-100.us.oracle.com [10.153.92.40]) by phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com (PPS) with ESMTPS id 464298rfnb-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Mon, 21 Apr 2025 16:34:40 +0000 From: Ross Philipson To: linux-kernel@vger.kernel.org, x86@kernel.org, linux-integrity@vger.kernel.org, linux-doc@vger.kernel.org, linux-crypto@vger.kernel.org, kexec@lists.infradead.org, linux-efi@vger.kernel.org, iommu@lists.linux.dev Cc: ross.philipson@oracle.com, dpsmith@apertussolutions.com, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, hpa@zytor.com, dave.hansen@linux.intel.com, ardb@kernel.org, mjg59@srcf.ucam.org, James.Bottomley@hansenpartnership.com, peterhuewe@gmx.de, jarkko@kernel.org, jgg@ziepe.ca, luto@amacapital.net, nivedita@alum.mit.edu, herbert@gondor.apana.org.au, davem@davemloft.net, corbet@lwn.net, ebiederm@xmission.com, dwmw2@infradead.org, baolu.lu@linux.intel.com, kanth.ghatraju@oracle.com, andrew.cooper3@citrix.com, trenchboot-devel@googlegroups.com Subject: [PATCH v14 06/19] x86: Add early SHA-256 support for Secure Launch early measurements Date: Mon, 21 Apr 2025 09:26:59 -0700 Message-Id: <20250421162712.77452-7-ross.philipson@oracle.com> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20250421162712.77452-1-ross.philipson@oracle.com> References: <20250421162712.77452-1-ross.philipson@oracle.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1095,Hydra:6.0.680,FMLib:17.12.68.34 definitions=2025-04-21_08,2025-04-21_02,2024-11-22_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 bulkscore=0 adultscore=0 phishscore=0 mlxscore=0 malwarescore=0 suspectscore=0 spamscore=0 mlxlogscore=999 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2502280000 definitions=main-2504210129 X-Proofpoint-GUID: sGEhLFJqqJmUFqgfXd7Ym3VkDrEX0Fi3 X-Proofpoint-ORIG-GUID: sGEhLFJqqJmUFqgfXd7Ym3VkDrEX0Fi3 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250421_093500_854105_98CD1930 X-CRM114-Status: GOOD ( 14.01 ) X-BeenThere: kexec@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "kexec" Errors-To: kexec-bounces+kexec=archiver.kernel.org@lists.infradead.org From: "Daniel P. Smith" The SHA-256 algorithm is necessary to measure configuration information into the TPM as early as possible before using the values. This implementation uses the established approach of #including the SHA-256 libraries directly in the code since the compressed kernel is not uncompressed at this point. Signed-off-by: Daniel P. Smith Signed-off-by: Ross Philipson --- arch/x86/boot/compressed/Makefile | 2 +- arch/x86/boot/compressed/sha256.c | 6 ++++++ 2 files changed, 7 insertions(+), 1 deletion(-) create mode 100644 arch/x86/boot/compressed/sha256.c diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile index e74228f7a607..d57fc1604b75 100644 --- a/arch/x86/boot/compressed/Makefile +++ b/arch/x86/boot/compressed/Makefile @@ -107,7 +107,7 @@ vmlinux-objs-$(CONFIG_UNACCEPTED_MEMORY) += $(obj)/mem.o vmlinux-objs-$(CONFIG_EFI) += $(obj)/efi.o vmlinux-libs-$(CONFIG_EFI_STUB) += $(objtree)/drivers/firmware/efi/libstub/lib.a -vmlinux-objs-$(CONFIG_SECURE_LAUNCH) += $(obj)/sha1.o +vmlinux-objs-$(CONFIG_SECURE_LAUNCH) += $(obj)/sha1.o $(obj)/sha256.o $(obj)/vmlinux: $(vmlinux-objs-y) $(vmlinux-libs-y) FORCE $(call if_changed,ld) diff --git a/arch/x86/boot/compressed/sha256.c b/arch/x86/boot/compressed/sha256.c new file mode 100644 index 000000000000..7795926e7e1d --- /dev/null +++ b/arch/x86/boot/compressed/sha256.c @@ -0,0 +1,6 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2025 Apertus Solutions, LLC + */ + +#include "../../../../lib/crypto/sha256.c" -- 2.39.3