From patchwork Thu May 16 21:28:39 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marek Vasut X-Patchwork-Id: 1936241 X-Patchwork-Delegate: festevam@gmail.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=denx.de header.i=@denx.de header.a=rsa-sha256 header.s=phobos-20191101 header.b=r6pMMaq6; dkim=pass (2048-bit key) header.d=denx.de header.i=@denx.de header.a=rsa-sha256 header.s=phobos-20191101 header.b=i+qA1z5k; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de (client-ip=85.214.62.61; helo=phobos.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=patchwork.ozlabs.org) Received: from phobos.denx.de (phobos.denx.de [85.214.62.61]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1) server-digest SHA384) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4VgNZZ4MqMz20KF for ; Fri, 17 May 2024 07:31:34 +1000 (AEST) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id 6BEBE8847A; Thu, 16 May 2024 23:31:31 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=fail (p=none dis=none) header.from=denx.de Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=denx.de; s=phobos-20191101; t=1715895091; bh=ywq2ppXMwIcLoWAxOC/D20va6HnqoStzhVCGZ7wLBck=; h=From:To:Cc:Subject:Date:List-Id:List-Unsubscribe:List-Archive: List-Post:List-Help:List-Subscribe:From; b=r6pMMaq6/lisz1s0Jn3XpkSTpE0svNWrJNFIb/noTyz38Hj/4xSEXVOahikNinOrx yS7RrxD0eDVFl6VPx9iC0xRRUQan5ZOFyRDHv/h/2moYfHjceHGXtIWeDTdVjXQL5k CnW9OqWa4EDbizZc4voNzbFE+rPXf4OX9QFzp++PEqFTXsTogV1NzTPzdSvUT7RAEY uCMWI8lFy8ocaBnLT4JYysfCR+Tw8nkfA4VUfs4IkFCXL0M5LyKGTTIo+YHkIGf/lG uWtID/0bFlgscCKem927B8QX/yWKfSvvdAnPnMZF9AH8FspY1Is0GP4TL8mKIxebsn DGLmg6cW7wNqQ== Received: from tr.lan (ip-86-49-120-218.bb.vodafone.cz [86.49.120.218]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) (Authenticated sender: marex@denx.de) by phobos.denx.de (Postfix) with ESMTPSA id 5209A88410; Thu, 16 May 2024 23:31:29 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=denx.de; s=phobos-20191101; t=1715895090; bh=ywq2ppXMwIcLoWAxOC/D20va6HnqoStzhVCGZ7wLBck=; h=From:To:Cc:Subject:Date:From; b=i+qA1z5kjyDBGSCQjtHqe4AEhPzUE9cmevyCBj87rjyjG47TiyMkQ/P7nQ57hL8LB 8EyNs9VObp3Sh81LIOOFhJzuh9WEYzlRsQ++nrvFD1o8TR06yIOeQbtJdFKTvw2PBl uGCD3/W8f2X92XGPsbNifdfrpcaVyedEY2Jm8N6/e1WH58QSd3+86/dQFwibP8h1UW ojNe3QfmcNqvQj3YFGA80XQZGNe1bzkBxMzLCrRIkRyibfvWpHtxiRmOfMroBW09C7 fX2XxM9fh7/QFm3C2MzPZ/TEnB9dKDFLSar+UKUT6isFnagaXNt3mH11y7rypf6rjA cGm/EsLWrP2aw== From: Marek Vasut To: u-boot@lists.denx.de Cc: anton.gres@ifm.com, ch@denx.de, Marek Vasut , "NXP i.MX U-Boot Team" , Adam Ford , Alper Nebi Yasak , Andrejs Cainikovs , Angus Ainslie , Emanuele Ghidoli , Fabio Estevam , Francesco Dolcini , Marcel Ziswiler , Rasmus Villemoes , Simon Glass , Stefan Eichenberger , Stefano Babic , Tim Harvey , Tom Rini , kernel@puri.sm, u-boot@dh-electronics.com Subject: [PATCH v3 1/4] binman: Add nxp_imx8mcst etype for i.MX8M flash.bin signing Date: Thu, 16 May 2024 23:28:39 +0200 Message-ID: <20240516213036.89016-1-marex@denx.de> X-Mailer: git-send-email 2.43.0 MIME-Version: 1.0 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.39 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.8 at phobos.denx.de X-Virus-Status: Clean Add new binman etype which allows signing both the SPL and fitImage sections of i.MX8M flash.bin using CST. There are multiple DT properties which govern the signing process, nxp,loader-address is the only mandatory one which sets the SPL signature start address without the imx8mimage header, this should be SPL text base. The key material can be configured using optional DT properties nxp,srk-table, nxp,csf-crt, nxp,img-crt, all of which default the key material names generated by CST tool scripts. The nxp,unlock property can be used to unlock CAAM access in SPL section. Signed-off-by: Marek Vasut --- Cc: "NXP i.MX U-Boot Team" Cc: Adam Ford Cc: Alper Nebi Yasak Cc: Andrejs Cainikovs Cc: Angus Ainslie Cc: Emanuele Ghidoli Cc: Fabio Estevam Cc: Francesco Dolcini Cc: Marcel Ziswiler Cc: Rasmus Villemoes Cc: Simon Glass Cc: Stefan Eichenberger Cc: Stefano Babic Cc: Tim Harvey Cc: Tom Rini Cc: kernel@puri.sm Cc: u-boot@dh-electronics.com Cc: u-boot@lists.denx.de --- V2: - Use configparser module for generating the configuration INI file - Use config template as an input, parse it, modify only keys of interest - Pull magic values into top level variables - Rename nxp,csf-key and nxp,img-key to nxp,csf-crt and nxp,img-crt - Return unmodified data if signing unrecognized (non-SPL/non-FIT) section V3: - Introduce SRK_TABLE/CSF_KEY/IMG_KEY env variables as alternative option for specifying the key material paths - Clean up imx8mimage and imx8mcsf files and add them to gitignore --- .gitignore | 2 + Makefile | 2 +- tools/binman/btool/cst.py | 48 +++++++++ tools/binman/etype/nxp_imx8mcst.py | 164 +++++++++++++++++++++++++++++ 4 files changed, 215 insertions(+), 1 deletion(-) create mode 100644 tools/binman/btool/cst.py create mode 100644 tools/binman/etype/nxp_imx8mcst.py diff --git a/.gitignore b/.gitignore index 37f71c275c3..502a7e6ec70 100644 --- a/.gitignore +++ b/.gitignore @@ -73,6 +73,8 @@ fit-dtb.blob* /capsule.*.efi-capsule /capsule*.map /keep-syms-lto.* +/*imx8mimage* +/*imx8mcst* # # Generated include files diff --git a/Makefile b/Makefile index 44deb339af1..026a6014a48 100644 --- a/Makefile +++ b/Makefile @@ -2210,7 +2210,7 @@ MRPROPER_DIRS += include/config include/generated spl tpl vpl \ # Remove include/asm symlink created by U-Boot before v2014.01 MRPROPER_FILES += .config .config.old include/autoconf.mk* include/config.h \ ctags etags tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \ - drivers/video/fonts/*.S include/asm + drivers/video/fonts/*.S include/asm *imx8mimage* *imx8mcst* # clean - Delete most, but leave enough to build external modules # diff --git a/tools/binman/btool/cst.py b/tools/binman/btool/cst.py new file mode 100644 index 00000000000..30e78bdbbd9 --- /dev/null +++ b/tools/binman/btool/cst.py @@ -0,0 +1,48 @@ +# SPDX-License-Identifier: GPL-2.0+ +# Copyright 2024 Marek Vasut +# +"""Bintool implementation for cst""" + +import re + +from binman import bintool + +class Bintoolcst(bintool.Bintool): + """Image generation for U-Boot + + This bintool supports running `cst` with some basic parameters as + needed by binman. + """ + def __init__(self, name): + super().__init__(name, 'Sign NXP i.MX image') + + # pylint: disable=R0913 + def run(self, output_fname=None): + """Run cst + + Args: + output_fname: Output filename to write to + """ + args = [] + if output_fname: + args += ['-o', output_fname] + return self.run_cmd(*args) + + def fetch(self, method): + """Fetch handler for cst + + This installs cst using the apt utility. + + Args: + method (FETCH_...): Method to use + + Returns: + True if the file was fetched and now installed, None if a method + other than FETCH_BIN was requested + + Raises: + Valuerror: Fetching could not be completed + """ + if method != bintool.FETCH_BIN: + return None + return self.apt_install('imx-code-signing-tool') diff --git a/tools/binman/etype/nxp_imx8mcst.py b/tools/binman/etype/nxp_imx8mcst.py new file mode 100644 index 00000000000..8221517b0c4 --- /dev/null +++ b/tools/binman/etype/nxp_imx8mcst.py @@ -0,0 +1,164 @@ +# SPDX-License-Identifier: GPL-2.0+ +# Copyright 2023-2024 Marek Vasut +# Written with much help from Simon Glass +# +# Entry-type module for generating the i.MX8M code signing tool +# input configuration file and invocation of cst on generated +# input configuration file and input data to be signed. +# + +import configparser +import os +import struct + +from collections import OrderedDict + +from binman.entry import Entry +from binman.etype.mkimage import Entry_mkimage +from binman.etype.section import Entry_section +from binman import elf +from dtoc import fdt_util +from u_boot_pylib import tools + +MAGIC_NXP_IMX_IVT = 0x412000d1 +MAGIC_FITIMAGE = 0xedfe0dd0 + +csf_config_template = """ +[Header] + Version = 4.3 + Hash Algorithm = sha256 + Engine = CAAM + Engine Configuration = 0 + Certificate Format = X509 + Signature Format = CMS + +[Install SRK] + File = "SRK_1_2_3_4_table.bin" + Source index = 0 + +[Install CSFK] + File = "CSF1_1_sha256_4096_65537_v3_usr_crt.pem" + +[Authenticate CSF] + +[Unlock] + Engine = CAAM + Features = MID + +[Install Key] + Verification index = 0 + Target Index = 2 + File = "IMG1_1_sha256_4096_65537_v3_usr_crt.pem" + +[Authenticate Data] + Verification index = 2 + Blocks = 0x1234 0x78 0xabcd "data.bin" +""" + +class Entry_nxp_imx8mcst(Entry_mkimage): + """NXP i.MX8M CST .cfg file generator and cst invoker + + Properties / Entry arguments: + - nxp,loader-address - loader address (SPL text base) + """ + + def __init__(self, section, etype, node): + super().__init__(section, etype, node) + self.required_props = ['nxp,loader-address'] + + def ReadNode(self): + super().ReadNode() + self.loader_address = fdt_util.GetInt(self._node, 'nxp,loader-address') + self.srk_table = os.getenv('SRK_TABLE', fdt_util.GetString(self._node, 'nxp,srk-table', 'SRK_1_2_3_4_table.bin')) + self.csf_crt = os.getenv('CSF_KEY', fdt_util.GetString(self._node, 'nxp,csf-crt', 'CSF1_1_sha256_4096_65537_v3_usr_crt.pem')) + self.img_crt = os.getenv('IMG_KEY', fdt_util.GetString(self._node, 'nxp,img-crt', 'IMG1_1_sha256_4096_65537_v3_usr_crt.pem')) + self.unlock = fdt_util.GetBool(self._node, 'nxp,unlock') + self.ReadEntries() + + def BuildSectionData(self, required): + data, input_fname, uniq = self.collect_contents_to_file( + self._entries.values(), 'input') + + # Parse the input data and figure out what it is that is being signed. + # - If it is mkimage'd imx8mimage, then extract to be signed data size + # from imx8mimage header, and calculate CSF blob offset right past + # the SPL from this information. + # - If it is fitImage, then pad the image to 4k, add generated IVT and + # sign the whole payload, then append CSF blob at the end right past + # the IVT. + signtype = struct.unpack('