From patchwork Thu Mar 14 04:26:58 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Simon Glass X-Patchwork-Id: 13592086 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 47AE2C54E5D for ; Thu, 14 Mar 2024 04:28:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=EezOz6RS6tfJGnU0OChjqoXC9BP4VDmmmUJgHkwA4rc=; b=VxZ5l6Qw/2vKO7 3JeL0ylpHfmajAAdW3wsV0RSq03BJLiXBlUKD8OyDguN8o33rGtIwD8B5VnFOSTfO8PtrCll8LHZ0 38vPEcNCdusl1iXdV+Vgoo5miMS6QTTzuEsnK88MyVuyX1pZPTHhD4W1MihQ9kYaSrSoVdgsMgqrc f//6JTT1LG6AidJBGnme/D4CSyMGl2lOBoVgW3fq4DyL6TE3YXhsg6DE/KEpeg6QopujntfP8Wgxh GTohHcDt4uNdhrAiU4RZKuVU180rYQ3GTvC+GzykX5H14yGs69VxhNYTOOxyHeFoVeqSy0oUwb6Iu vACktnb4Vd3vj2mQ+YYw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkchl-0000000Cvpw-2SHn; Thu, 14 Mar 2024 04:28:33 +0000 Received: from mail-pl1-x632.google.com ([2607:f8b0:4864:20::632]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkchh-0000000CvpH-0Ciz for linux-arm-kernel@lists.infradead.org; Thu, 14 Mar 2024 04:28:31 +0000 Received: by mail-pl1-x632.google.com with SMTP id d9443c01a7336-1dc3b4b9b62so3684305ad.1 for ; Wed, 13 Mar 2024 21:28:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1710390507; x=1710995307; darn=lists.infradead.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=sj1MXeANmDRLF3MEitp9MoX29tLTgbBs/EQT3G4Krt4=; b=R0AXBYgKpWErCNOcnuhG268LR6P2m9elEvz119XNwAahxfwxngNF/O4Jqw9PZEB++W eMSc4NTWp1L6U/MyXtgcNqWu+tpYUK5GRdTIWaPkbsTR4adsk2JOWN2I4yN9GsFwufZv e/juJxS6IbxCDAOD1Li8vkX42qkCotapmBHt8= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1710390507; x=1710995307; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=sj1MXeANmDRLF3MEitp9MoX29tLTgbBs/EQT3G4Krt4=; b=gysve5fVr5qSh+E7mawnkxV4E4RJguvrxqEy+egQeTb7QuMqcA8Bn8OBO9WUvjWrGY 0jzHfo1cl7FrzP9pVGqwawOVZUn9vwdmh+BZhO7ZCGTtn4NdMVOp682w2vBTece8wdtl ny+UjEmbG6cXjwP9AhBWEyKrrq8Utxad+3RqAOyZ8nVpd7mbLuWqcPqSp7q4W4N1JmSi ynCclpVeJLUAvgbkAHRl49FaPwSQ8mwLF9YoSR4uliJ5PP7VAeHj4Pp5CKmr+CfxI6GU HrF8gQ17P9mZgI9eNMNRC2IKg3xqqnkcEfjaw9rckw7a6H8UittefHrcOKk581DSIsFx PFyA== X-Gm-Message-State: AOJu0YxLRZN/Mv5OO9vVQUL3s6GvjkclgXg9PLwgZxZ1crT1h3BH/pdx SEh2Kw+IgYCYkNOrglzsgsHrUL4xRp+vanHLbzCercP6UbgVZjjl0W/H/W2v+DYILcsdGvuEnJA = X-Google-Smtp-Source: AGHT+IGGQ7GdScbH3CvI6seZ6/6CyftsJCfDx8hL8rSVmYyHMWvrc7qxaObFDWDqWeqs47hyWv/jkQ== X-Received: by 2002:a17:902:f612:b0:1dd:c938:8f8e with SMTP id n18-20020a170902f61200b001ddc9388f8emr1411096plg.10.1710390506692; Wed, 13 Mar 2024 21:28:26 -0700 (PDT) Received: from chromium.org ([118.149.78.37]) by smtp.gmail.com with ESMTPSA id u5-20020a170903124500b001dd98195371sm479200plh.181.2024.03.13.21.28.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 13 Mar 2024 21:28:26 -0700 (PDT) From: Simon Glass To: linux-arm-kernel@lists.infradead.org Cc: Ahmad Fatoum , Nicolas Schier , Masahiro Yamada , Simon Glass , Catalin Marinas , Will Deacon , linux-kernel@vger.kernel.org Subject: [PATCH v11 1/2] arm64: Add BOOT_TARGETS variable Date: Thu, 14 Mar 2024 17:26:58 +1300 Message-Id: <20240314042659.232142-2-sjg@chromium.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240314042659.232142-1-sjg@chromium.org> References: <20240314042659.232142-1-sjg@chromium.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240313_212829_111994_474AB662 X-CRM114-Status: GOOD ( 10.57 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add a new variable containing a list of possible targets. Mark them as phony. This matches the approach taken for arch/arm Signed-off-by: Simon Glass --- (no changes since v7) Changes in v7: - Drop the kbuild tag Changes in v6: - Drop the unwanted .gz suffix arch/arm64/Makefile | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile index 0e075d3c546b..1217d97998ac 100644 --- a/arch/arm64/Makefile +++ b/arch/arm64/Makefile @@ -154,6 +154,10 @@ libs-$(CONFIG_EFI_STUB) += $(objtree)/drivers/firmware/efi/libstub/lib.a # Default target when executing plain make boot := arch/arm64/boot +BOOT_TARGETS := Image vmlinuz.efi + +PHONY += $(BOOT_TARGETS) + ifeq ($(CONFIG_EFI_ZBOOT),) KBUILD_IMAGE := $(boot)/Image.gz else @@ -163,7 +167,7 @@ endif all: $(notdir $(KBUILD_IMAGE)) vmlinuz.efi: Image -Image vmlinuz.efi: vmlinux +$(BOOT_TARGETS): vmlinux $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ Image.%: Image From patchwork Thu Mar 14 04:26:59 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Simon Glass X-Patchwork-Id: 13592087 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E4B10C5475B for ; Thu, 14 Mar 2024 04:28:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=mOGh8KI7QimfvpRQ760YI9ca+B3EQNBWdR0yGKtsF30=; b=QX31KQg39RyAvg j5vinCVxt7kdr/JoC7NQrybOyl6txxQnWd1I1FhJlhy8g9P85yFAEAmdxiY2v/ciU1EIBsN/mAjsw qxJR6Avk/P06FXGqdSU7VRjxETRH7KsWUNWgdHsNDojqfYrnpGJA7XVoACfnreD5MUULkpYs643Jm idxDq9MQ+awntTSnb293BLVGjt5wazbOG66DJd+hn1Xe+XRvUOZXTxvhBjQ4Kp2K5Z87Kd6lXMDhg Q1DN0iaCinHbOD7/G5GqPl7jtjrvjKQ+gEWAoi+4b4SqZ8p+aekqjwc2esFCAf8V6/XbgYZ0Upez2 MfgoNsVdWt4P4nAOY8Og==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkchv-0000000CvvP-2xSt; Thu, 14 Mar 2024 04:28:43 +0000 Received: from mail-pg1-x534.google.com ([2607:f8b0:4864:20::534]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkchr-0000000CvsL-1rCW for linux-arm-kernel@lists.infradead.org; Thu, 14 Mar 2024 04:28:41 +0000 Received: by mail-pg1-x534.google.com with SMTP id 41be03b00d2f7-5d8b276979aso397987a12.2 for ; Wed, 13 Mar 2024 21:28:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1710390518; x=1710995318; darn=lists.infradead.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=i7KaaNtYVeHwjTO9YKm/+KfBYG68joLx8iXf/cQ7VH0=; b=MdDMzzhaifQa+mqZKF3pYtISaDrao+mc8gUI9W+kheprQUKqrIdX4fvRSEIcY83lrt IVts0roBf0Mq6E1GHcJrstMTMAI319J/dz4keV6JcdOZXrDJJ7UEWzhKnCSMPmBAwzjm aLHVovCqYwxd55qkYmSwF1r//qRbUje7vsSzA= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1710390518; x=1710995318; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=i7KaaNtYVeHwjTO9YKm/+KfBYG68joLx8iXf/cQ7VH0=; b=Fu/4yRtYpJP//0gJkt8/xy2/Inig7PF/l451iK4hgkjRQQlYLL73FiTMiTAFO57rG2 nJ/Q8nKUJlD3F08JrFE8nJCBH5WMbXU+i4LdYO+PgsBrIBg0mk9KkUpKjBoewm2o8FfQ 6WmEe27cR0qXDm9dUgC/jjzMO/IpomnR5YSDOMQDGJ/xm82Ivz9L1oCn0Hi+n+e/MF+0 ZG293lzniel+n4GrUgRjMI/w+mOIjygMmgjROuXZ43dK2o6/xU9PsGmFEcgjBBxajkyt 1BUMUfAGLUNelVmll4+V5HSlB6lzXAm0t2e8vulhVO+9KDH4iD/A2/SGeN/J2dFNHyWt Irjw== X-Gm-Message-State: AOJu0YxtpZkRf1vPSYPPVKY9cZq/x/tELhVILW7Y4kvVFm4EVbajpbP5 Z0a6nKSckcGpLvL8YFcEIf5PORgeC1WiYbPMOZh+3gpD/qv8e4gt/W2+bIoMbPiUDEACk2tBA60 = X-Google-Smtp-Source: AGHT+IEIVeX9M6qIiSDiouc482T1Cb1JSC1mL3ZhBJgs/2khtqmWK5RDJ0uSv5BHWt/NhF/JD3tlYA== X-Received: by 2002:a05:6a20:94c9:b0:1a1:8474:31e4 with SMTP id ht9-20020a056a2094c900b001a1847431e4mr890420pzb.16.1710390518082; Wed, 13 Mar 2024 21:28:38 -0700 (PDT) Received: from chromium.org ([118.149.78.37]) by smtp.gmail.com with ESMTPSA id u5-20020a170903124500b001dd98195371sm479200plh.181.2024.03.13.21.28.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 13 Mar 2024 21:28:37 -0700 (PDT) From: Simon Glass To: linux-arm-kernel@lists.infradead.org Cc: Ahmad Fatoum , Nicolas Schier , Masahiro Yamada , Simon Glass , Catalin Marinas , Jonathan Corbet , Nathan Chancellor , Nick Terrell , Will Deacon , linux-doc@vger.kernel.org, linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, workflows@vger.kernel.org Subject: [PATCH v11 2/2] arm64: boot: Support Flat Image Tree Date: Thu, 14 Mar 2024 17:26:59 +1300 Message-Id: <20240314042659.232142-3-sjg@chromium.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240314042659.232142-1-sjg@chromium.org> References: <20240314042659.232142-1-sjg@chromium.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240313_212839_581580_4CDE09A2 X-CRM114-Status: GOOD ( 35.68 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add a script which produces a Flat Image Tree (FIT), a single file containing the built kernel and associated devicetree files. Compression defaults to gzip which gives a good balance of size and performance. The files compress from about 86MB to 24MB using this approach. The FIT can be used by bootloaders which support it, such as U-Boot and Linuxboot. It permits automatic selection of the correct devicetree, matching the compatible string of the running board with the closest compatible string in the FIT. There is no need for filenames or other workarounds. Add a 'make image.fit' build target for arm64, as well. The FIT can be examined using 'dumpimage -l'. This uses the 'dtbs-list' file but processes only .dtb files, ignoring the overlay .dtbo files. This features requires pylibfdt (use 'pip install libfdt'). It also requires compression utilities for the algorithm being used. Supported compression options are the same as the Image.xxx files. Use FIT_COMPRESSION to select an algorithm other than gzip. While FIT supports a ramdisk / initrd, no attempt is made to support this here, since it must be built separately from the Linux build. Signed-off-by: Simon Glass --- Changes in v11: - Use dtbslist file in image.fit rule - Update cmd_fit rule as per Masahiro - Don't mention ignoring files without a .dtb prefix - Use argparse fromfile_prefix_chars feature - Add a -v option and use it for output (with make V=1) - rename srcdir to dtbs - Use -o for the output file instead of -f Changes in v10: - Make use of dtbs-list file - Mention dtbs-list and FIT_COMPRESSION - Update copyright year - Update cover letter to take account of an applied patch Changes in v9: - Move the compression control into Makefile.lib Changes in v8: - Drop compatible string in FDT node - Correct sorting of MAINTAINERS to before ARM64 PORT - Turn compress part of the make_fit.py comment in to a sentence - Add two blank lines before parse_args() and setup_fit() - Use 'image.fit: dtbs' instead of BUILD_DTBS var - Use '$( +L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers) +S: Maintained +F: arch/arm64/boot/Makefile +F: scripts/make_fit.py + ARM64 PORT (AARCH64 ARCHITECTURE) M: Catalin Marinas M: Will Deacon diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile index 1217d97998ac..b8b1d4f4a572 100644 --- a/arch/arm64/Makefile +++ b/arch/arm64/Makefile @@ -154,7 +154,7 @@ libs-$(CONFIG_EFI_STUB) += $(objtree)/drivers/firmware/efi/libstub/lib.a # Default target when executing plain make boot := arch/arm64/boot -BOOT_TARGETS := Image vmlinuz.efi +BOOT_TARGETS := Image vmlinuz.efi image.fit PHONY += $(BOOT_TARGETS) @@ -166,7 +166,9 @@ endif all: $(notdir $(KBUILD_IMAGE)) -vmlinuz.efi: Image +image.fit: dtbs + +vmlinuz.efi image.fit: Image $(BOOT_TARGETS): vmlinux $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ @@ -219,6 +221,7 @@ virtconfig: define archhelp echo '* Image.gz - Compressed kernel image (arch/$(ARCH)/boot/Image.gz)' echo ' Image - Uncompressed kernel image (arch/$(ARCH)/boot/Image)' + echo ' image.fit - Flat Image Tree (arch/$(ARCH)/boot/image.fit)' echo ' install - Install uncompressed kernel' echo ' zinstall - Install compressed kernel' echo ' Install using (your) ~/bin/installkernel or' diff --git a/arch/arm64/boot/.gitignore b/arch/arm64/boot/.gitignore index af5dc61f8b43..abaae9de1bdd 100644 --- a/arch/arm64/boot/.gitignore +++ b/arch/arm64/boot/.gitignore @@ -2,3 +2,4 @@ Image Image.gz vmlinuz* +image.fit diff --git a/arch/arm64/boot/Makefile b/arch/arm64/boot/Makefile index a5a787371117..607a67a649c4 100644 --- a/arch/arm64/boot/Makefile +++ b/arch/arm64/boot/Makefile @@ -16,7 +16,8 @@ OBJCOPYFLAGS_Image :=-O binary -R .note -R .note.gnu.build-id -R .comment -S -targets := Image Image.bz2 Image.gz Image.lz4 Image.lzma Image.lzo Image.zst +targets := Image Image.bz2 Image.gz Image.lz4 Image.lzma Image.lzo \ + Image.zst image.fit $(obj)/Image: vmlinux FORCE $(call if_changed,objcopy) @@ -39,6 +40,9 @@ $(obj)/Image.lzo: $(obj)/Image FORCE $(obj)/Image.zst: $(obj)/Image FORCE $(call if_changed,zstd) +$(obj)/image.fit: $(obj)/Image $(obj)/dts/dtbs-list FORCE + $(call if_changed,fit) + EFI_ZBOOT_PAYLOAD := Image EFI_ZBOOT_BFD_TARGET := elf64-littleaarch64 EFI_ZBOOT_MACH_TYPE := ARM64 diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib index 3179747cbd2c..0138d0b82be5 100644 --- a/scripts/Makefile.lib +++ b/scripts/Makefile.lib @@ -504,6 +504,21 @@ quiet_cmd_uimage = UIMAGE $@ -a $(UIMAGE_LOADADDR) -e $(UIMAGE_ENTRYADDR) \ -n '$(UIMAGE_NAME)' -d $< $@ +# Flat Image Tree (FIT) +# This allows for packaging of a kernel and all devicetrees files, using +# compression. +# --------------------------------------------------------------------------- + +MAKE_FIT := $(srctree)/scripts/make_fit.py + +# Use this to override the compression algorithm +FIT_COMPRESSION ?= gzip + +quiet_cmd_fit = FIT $@ + cmd_fit = $(MAKE_FIT) -o $@ --arch $(UIMAGE_ARCH) --os linux \ + --name '$(UIMAGE_NAME)' $(if $(V),-v) \ + --compress $(FIT_COMPRESSION) -k $< @$(word 2,$^) + # XZ # --------------------------------------------------------------------------- # Use xzkern to compress the kernel image and xzmisc to compress other things. diff --git a/scripts/make_fit.py b/scripts/make_fit.py new file mode 100755 index 000000000000..3de90c5a094b --- /dev/null +++ b/scripts/make_fit.py @@ -0,0 +1,290 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: GPL-2.0+ +# +# Copyright 2024 Google LLC +# Written by Simon Glass +# + +"""Build a FIT containing a lot of devicetree files + +Usage: + make_fit.py -A arm64 -n 'Linux-6.6' -O linux + -o arch/arm64/boot/image.fit -k /tmp/kern/arch/arm64/boot/image.itk + @arch/arm64/boot/dts/dtbs-list -E -c gzip + +Creates a FIT containing the supplied kernel and a set of devicetree files, +either specified individually or listed in a file (with an '@' prefix). + +Use -E to generate an external FIT (where the data is placed after the +FIT data structure). This allows parsing of the data without loading +the entire FIT. + +Use -c to compress the data, using bzip2, gzip, lz4, lzma, lzo and +zstd algorithms. + +The resulting FIT can be booted by bootloaders which support FIT, such +as U-Boot, Linuxboot, Tianocore, etc. + +Note that this tool does not yet support adding a ramdisk / initrd. +""" + +import argparse +import collections +import os +import subprocess +import sys +import tempfile +import time + +import libfdt + + +# Tool extension and the name of the command-line tools +CompTool = collections.namedtuple('CompTool', 'ext,tools') + +COMP_TOOLS = { + 'bzip2': CompTool('.bz2', 'bzip2'), + 'gzip': CompTool('.gz', 'pigz,gzip'), + 'lz4': CompTool('.lz4', 'lz4'), + 'lzma': CompTool('.lzma', 'lzma'), + 'lzo': CompTool('.lzo', 'lzop'), + 'zstd': CompTool('.zstd', 'zstd'), +} + + +def parse_args(): + """Parse the program ArgumentParser + + Returns: + Namespace object containing the arguments + """ + epilog = 'Build a FIT from a directory tree containing .dtb files' + parser = argparse.ArgumentParser(epilog=epilog, fromfile_prefix_chars='@') + parser.add_argument('-A', '--arch', type=str, required=True, + help='Specifies the architecture') + parser.add_argument('-c', '--compress', type=str, default='none', + help='Specifies the compression') + parser.add_argument('-E', '--external', action='store_true', + help='Convert the FIT to use external data') + parser.add_argument('-n', '--name', type=str, required=True, + help='Specifies the name') + parser.add_argument('-o', '--output', type=str, required=True, + help='Specifies the output file (.fit)') + parser.add_argument('-O', '--os', type=str, required=True, + help='Specifies the operating system') + parser.add_argument('-k', '--kernel', type=str, required=True, + help='Specifies the (uncompressed) kernel input file (.itk)') + parser.add_argument('-v', '--verbose', action='store_true', + help='Enable verbose output') + parser.add_argument('dtbs', type=str, nargs='*', + help='Specifies the devicetree files to process') + + return parser.parse_args() + + +def setup_fit(fsw, name): + """Make a start on writing the FIT + + Outputs the root properties and the 'images' node + + Args: + fsw (libfdt.FdtSw): Object to use for writing + name (str): Name of kernel image + """ + fsw.INC_SIZE = 65536 + fsw.finish_reservemap() + fsw.begin_node('') + fsw.property_string('description', f'{name} with devicetree set') + fsw.property_u32('#address-cells', 1) + + fsw.property_u32('timestamp', int(time.time())) + fsw.begin_node('images') + + +def write_kernel(fsw, data, args): + """Write out the kernel image + + Writes a kernel node along with the required properties + + Args: + fsw (libfdt.FdtSw): Object to use for writing + data (bytes): Data to write (possibly compressed) + args (Namespace): Contains necessary strings: + arch: FIT architecture, e.g. 'arm64' + fit_os: Operating Systems, e.g. 'linux' + name: Name of OS, e.g. 'Linux-6.6.0-rc7' + compress: Compression algorithm to use, e.g. 'gzip' + """ + with fsw.add_node('kernel'): + fsw.property_string('description', args.name) + fsw.property_string('type', 'kernel_noload') + fsw.property_string('arch', args.arch) + fsw.property_string('os', args.os) + fsw.property_string('compression', args.compress) + fsw.property('data', data) + fsw.property_u32('load', 0) + fsw.property_u32('entry', 0) + + +def finish_fit(fsw, entries): + """Finish the FIT ready for use + + Writes the /configurations node and subnodes + + Args: + fsw (libfdt.FdtSw): Object to use for writing + entries (list of tuple): List of configurations: + str: Description of model + str: Compatible stringlist + """ + fsw.end_node() + seq = 0 + with fsw.add_node('configurations'): + for model, compat in entries: + seq += 1 + with fsw.add_node(f'conf-{seq}'): + fsw.property('compatible', bytes(compat)) + fsw.property_string('description', model) + fsw.property_string('fdt', f'fdt-{seq}') + fsw.property_string('kernel', 'kernel') + fsw.end_node() + + +def compress_data(inf, compress): + """Compress data using a selected algorithm + + Args: + inf (IOBase): Filename containing the data to compress + compress (str): Compression algorithm, e.g. 'gzip' + + Return: + bytes: Compressed data + """ + if compress == 'none': + return inf.read() + + comp = COMP_TOOLS.get(compress) + if not comp: + raise ValueError(f"Unknown compression algorithm '{compress}'") + + with tempfile.NamedTemporaryFile() as comp_fname: + with open(comp_fname.name, 'wb') as outf: + done = False + for tool in comp.tools.split(','): + try: + subprocess.call([tool, '-c'], stdin=inf, stdout=outf) + done = True + break + except FileNotFoundError: + pass + if not done: + raise ValueError(f'Missing tool(s): {comp.tools}\n') + with open(comp_fname.name, 'rb') as compf: + comp_data = compf.read() + return comp_data + + +def output_dtb(fsw, seq, fname, arch, compress): + """Write out a single devicetree to the FIT + + Args: + fsw (libfdt.FdtSw): Object to use for writing + seq (int): Sequence number (1 for first) + fmame (str): Filename containing the DTB + arch: FIT architecture, e.g. 'arm64' + compress (str): Compressed algorithm, e.g. 'gzip' + + Returns: + tuple: + str: Model name + bytes: Compatible stringlist + """ + with fsw.add_node(f'fdt-{seq}'): + # Get the compatible / model information + with open(fname, 'rb') as inf: + data = inf.read() + fdt = libfdt.FdtRo(data) + model = fdt.getprop(0, 'model').as_str() + compat = fdt.getprop(0, 'compatible') + + fsw.property_string('description', model) + fsw.property_string('type', 'flat_dt') + fsw.property_string('arch', arch) + fsw.property_string('compression', compress) + fsw.property('compatible', bytes(compat)) + + with open(fname, 'rb') as inf: + compressed = compress_data(inf, compress) + fsw.property('data', compressed) + return model, compat + + +def build_fit(args): + """Build the FIT from the provided files and arguments + + Args: + args (Namespace): Program arguments + + Returns: + tuple: + bytes: FIT data + int: Number of configurations generated + size: Total uncompressed size of data + """ + seq = 0 + size = 0 + fsw = libfdt.FdtSw() + setup_fit(fsw, args.name) + entries = [] + + # Handle the kernel + with open(args.kernel, 'rb') as inf: + comp_data = compress_data(inf, args.compress) + size += os.path.getsize(args.kernel) + write_kernel(fsw, comp_data, args) + + for fname in args.dtbs: + # Ignore overlay (.dtbo) files + if os.path.splitext(fname)[1] == '.dtb': + seq += 1 + size += os.path.getsize(fname) + model, compat = output_dtb(fsw, seq, fname, args.arch, args.compress) + entries.append([model, compat]) + + finish_fit(fsw, entries) + + # Include the kernel itself in the returned file count + return fsw.as_fdt().as_bytearray(), seq + 1, size + + +def run_make_fit(): + """Run the tool's main logic""" + args = parse_args() + + out_data, count, size = build_fit(args) + with open(args.output, 'wb') as outf: + outf.write(out_data) + + ext_fit_size = None + if args.external: + mkimage = os.environ.get('MKIMAGE', 'mkimage') + subprocess.check_call([mkimage, '-E', '-F', args.output], + stdout=subprocess.DEVNULL) + + with open(args.output, 'rb') as inf: + data = inf.read() + ext_fit = libfdt.FdtRo(data) + ext_fit_size = ext_fit.totalsize() + + if args.verbose: + comp_size = len(out_data) + print(f'FIT size {comp_size:#x}/{comp_size / 1024 / 1024:.1f} MB', + end='') + if ext_fit_size: + print(f', header {ext_fit_size:#x}/{ext_fit_size / 1024:.1f} KB', + end='') + print(f', {count} files, uncompressed {size / 1024 / 1024:.1f} MB') + + +if __name__ == "__main__": + sys.exit(run_make_fit())