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# Copyright (c) 2010-2011 Nest, Inc.
# All rights reserved.
# This document is the property of Nest Labs. It is considered
# confidential and proprietary information.
# This document may not be reproduced or transmitted in any form,
# in whole or in part, without the express written permission of
# Nest Labs.
# Description:
# This file is the makefile for the Universal Bootloader, u-boot.
include pre.mak
PackageRoot := .
PackageName := u-boot
PackageSeparator :=
PackageVersion :=
PackageSourceDir := $(PackageRoot)/$(PackageName)$(PackageSeparator)$(PackageVersion)
PackageBuildMakefile = $(call GenerateBuildPaths,include/
CleanPaths += $(PackageLicenseFile)
# Build and result paths for staging targets
UBootResultBinDir := $(call GenerateResultPaths,,bin)
UBootResultSbinDir := $(call GenerateResultPaths,,sbin)
UBootPrintEnvBuildPath := $(call GenerateBuildPaths,tools/env/fw_printenv)
UBootPrintEnvResultPath := $(call GenerateResultPaths,,sbin/fw_printenv)
UBootSetEnvResultPath := $(call GenerateResultPaths,,sbin/fw_setenv)
UBootMkimageBuildPath := $(call GenerateBuildPaths,tools/mkimage)
UBootMkimageResultPath := $(call GenerateResultPaths,,bin/mkimage)
NestBuildDefines := NEST_BUILD_CONFIG_$(call ToUpper,$(BuildConfig)) NEST_BUILD_CONFIG=\\\"$(BuildConfig)\\\"
NestBuildDefineFlags := $(call ToolGenerateDefineArgument,$(NestBuildDefines))
all: $(PackageDefaultGoal)
# Generate the package license contents.
$(PackageSourceDir)/COPYING: source
$(PackageLicenseFile): $(PackageSourceDir)/COPYING
# We are building this package from version-controller source, so
# there is nothing to do for this target goal.
# Prepare the sources.
.PHONY: source
source: | $(PackageSourceDir)
# Patch the sources, if necessary.
.PHONY: patch
patch: source
# U-Boot has no way of explicitly setting CC, LD, OBJCOPY, et al and
# instead relies on the value of CROSS_COMPILE. Consequently, we have
# to ensure that 'ToolBinDir' is in 'PATH' so that the kernel build
# infrastructure can find $(CROSS_COMPILE)gcc, $(CROSS_COMPILE)ld, et
# al.
configure build stage: PATH := $(PATH):$(ToolBinDir)
# Generate the package build makefile.
$(PackageBuildMakefile): | $(PackageSourceDir) $(BuildDirectory)
$(Verbose)unset MAKEFLAGS && \
$(MAKE) -C $(PackageSourceDir) \
O=$(CURDIR)/$(BuildDirectory) \
# Configure the source for building.
.PHONY: configure
configure: source $(PackageBuildMakefile)
# Build the source.
.PHONY: build
build: configure
$(Verbose)unset MAKEFLAGS && \
$(MAKE) -C $(PackageSourceDir) \
O=$(CURDIR)/$(BuildDirectory) \
NestBuildDefineFlags="$(NestBuildDefineFlags)" \
# Stage the build to a temporary installation area.
# U-Boot does not support a notion of installing, so we have to
# cherry-pick the components we want from the build directory and
# copy/install them to the results directory.
.PHONY: stage stage-target stage-target-tools stage-host-tools
stage: stage-target stage-target-tools stage-host-tools
stage-target: build | $(ResultDirectory)
$(Verbose)cp -f $(wildcard $(call GenerateBuildPaths,u-boot*)) $(ResultDirectory)
$(Verbose)cp -f $(call GenerateBuildPaths, $(ResultDirectory)
# Targets and commands for staging target (i.e cross-compiled) tools.
$(UBootResultSbinDir): | $(ResultDirectory)
$(UBootPrintEnvBuildPath): build
$(UBootPrintEnvResultPath): $(UBootPrintEnvBuildPath) | $(UBootResultSbinDir)
$(Echo) "Creating \"$(call GenerateBuildRootEllipsedPath,$@)\""
$(Verbose)ln -sf fw_printenv "$(@)"
stage-target-tools: $(UBootPrintEnvResultPath) $(UBootSetEnvResultPath)
# Targets and commands for staging host (i.e. natively-compiled) tools
# that may be used elsewhere in the build.
$(UBootResultBinDir): | $(ResultDirectory)
$(UBootMkimageBuildPath): build
$(UBootMkimageResultPath): $(UBootMkimageBuildPath) | $(UBootResultBinDir)
stage-host-tools: $(UBootMkimageResultPath)
$(Verbose)$(RM) $(RMFLAGS) -r $(BuildDirectory)
$(Verbose)$(RM) $(RMFLAGS) -r $(ResultDirectory)
include post.mak