freebsd-dev/sys/conf/dtb.mk
Emmanuel Vadot 46375c65f6 make.conf: Add the possibility to use another DTC
Add a make.conf DTC variable that control which DTC (Device Tree Compiler)
to use.

Reviewed by:	bdrewery, imp
Differential Revision:	https://reviews.freebsd.org/D9577
2017-06-17 23:34:53 +00:00

85 lines
2.2 KiB
Makefile

# $FreeBSD$
#
# The include file <dtb.mk> handles building and installing dtb files.
#
# +++ variables +++
#
# DTC The Device Tree Compiler to use
#
# DTS List of the dts files to build and install.
#
# DTBDIR Base path for dtb modules [/boot/dtb]
#
# DTBOWN .dtb file owner. [${BINOWN}]
#
# DTBGRP .dtb file group. [${BINGRP}]
#
# DTBMODE Module file mode. [${BINMODE}]
#
# DESTDIR The tree where the module gets installed. [not set]
#
# +++ targets +++
#
# install:
# install the kernel module; if the Makefile
# does not itself define the target install, the targets
# beforeinstall and afterinstall may also be used to cause
# actions immediately before and after the install target
# is executed.
#
.include <bsd.init.mk>
# Grab all the options for a kernel build. For backwards compat, we need to
# do this after bsd.own.mk.
.include "kern.opts.mk"
DTC?= dtc
# Search for kernel source tree in standard places.
.for _dir in ${.CURDIR}/../.. ${.CURDIR}/../../.. /sys /usr/src/sys
.if !defined(SYSDIR) && exists(${_dir}/kern/)
SYSDIR= ${_dir:tA}
.endif
.endfor
.if !defined(SYSDIR) || !exists(${SYSDIR}/kern/)
.error "can't find kernel source tree"
.endif
.SUFFIXES: .dtb .dts
.PATH: ${SYSDIR}/gnu/dts/${MACHINE} ${SYSDIR}/boot/fdt/dts/${MACHINE}
DTB=${DTS:R:S/$/.dtb/}
all: ${DTB}
.if defined(DTS)
.export DTC
.for _dts in ${DTS}
${_dts:R:S/$/.dtb/}: ${_dts} ${OP_META}
@echo Generating ${.TARGET} from ${_dts}
@${SYSDIR}/tools/fdt/make_dtb.sh ${SYSDIR} ${_dts} ${.OBJDIR}
CLEANFILES+=${_dts:R:S/$/.dtb/}
.endfor
.endif
.if !target(install)
.if !target(realinstall)
realinstall: _dtbinstall
.ORDER: beforeinstall _kmodinstall
_dtbinstall:
# Need to create this because installkernel doesn't invoke mtree with BSD.root.mtree
# to make sure the tree is setup properly. We don't recreate it to avoid duplicate
# entries in the NO_ROOT case.
test -d ${DESTDIR}${DTBDIR} || ${INSTALL} -d -o ${DTBOWN} -g ${DTBGRP} ${DESTDIR}${DTBDIR}
.for _dtb in ${DTB}
${INSTALL} -o ${DTBOWN} -g ${DTBGRP} -m ${DTBMODE} \
${_INSTALLFLAGS} ${_dtb} ${DESTDIR}${DTBDIR}/
.endfor
.endif # !target(realinstall)
.endif # !target(install)
.include <bsd.dep.mk>
.include <bsd.obj.mk>
.include <bsd.links.mk>