[src/trunk]: src/sys/conf Add support for building overlay DT blobs specified...

[thorpej <thorpej%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/99867309ce1a
branches:  trunk
changeset: 446757:99867309ce1a
user:      thorpej <thorpej%NetBSD.org@localhost>
date:      Mon Dec 17 04:37:15 2018 +0000

description:
Add support for building overlay DT blobs specified in the kernel
config file like so:

makeoptions     DTS_OVERLAYDIR="${THISARM}/conf"
makeoptions     DTS_OVERLAYS="
        my-cool-overlay.dts
"

The result is my-cool-overlay.dtbo in the kernel compile directory.

diffstat:

 sys/conf/dts.mk |  31 +++++++++++++++++++++++++------
 1 files changed, 25 insertions(+), 6 deletions(-)

diffs (60 lines):

diff -r efbfb4431999 -r 99867309ce1a sys/conf/dts.mk
--- a/sys/conf/dts.mk   Mon Dec 17 04:21:44 2018 +0000
+++ b/sys/conf/dts.mk   Mon Dec 17 04:37:15 2018 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: dts.mk,v 1.9 2018/05/25 19:48:12 jakllsch Exp $
+# $NetBSD: dts.mk,v 1.10 2018/12/17 04:37:15 thorpej Exp $
 
 DTSARCH?=${MACHINE_CPU}
 DTSGNUARCH?=${DTSARCH}
@@ -25,9 +25,9 @@
 .endfor
 .endfor
 
-DTSPATH=${DTSINC} ${DTSDIR} dts
+DTSPATH=${DTSINC} ${DTSDIR} ${DTS_OVERLAYDIR} dts
 
-.SUFFIXES: .dtd .dtb .dts
+.SUFFIXES: .dtd .dtdo .dtb .dtbo .dts
 
 .dts.dtd:
        (${CPP} -P -xassembler-with-cpp ${DTSPATH:@v@-I ${v}@} \
@@ -41,6 +41,17 @@
        ${TOOL_SED} -e 's@null.o@${.TARGET:.dtd=.dtb}@' \
            -e 's@/dev/null@@') > ${.TARGET}
 
+.dts.dtdo:
+       (${CPP} -P -xassembler-with-cpp ${DTSPATH:@v@-I ${v}@} \
+           -include ${.IMPSRC} /dev/null | \
+       ${TOOL_DTC} ${DTSPATH:@v@-i ${v}@} -I dts -O dtb \
+           -@ -o /dev/null -d /dev/stdout | \
+       ${TOOL_SED} -e 's@/dev/null@${.TARGET:.dtdo=.dtbo}@' \
+           -e 's@<stdin>@${.IMPSRC}@' && \
+       ${CPP} -P -xassembler-with-cpp ${DTSPATH:@v@-I ${v}@} \
+           -include ${.IMPSRC} -M /dev/null | \
+       ${TOOL_SED} -e 's@null.o@${.TARGET:.dtdo=.dtbo}@' \
+           -e 's@/dev/null@@') > ${.TARGET}
 
 .dts.dtb:
        ${CPP} -P -xassembler-with-cpp ${DTSPATH:@v@-I ${v}@} \
@@ -48,9 +59,17 @@
        ${TOOL_DTC} ${DTSPATH:@v@-i ${v}@} -I dts -O dtb \
            -p ${DTSPADDING} -b 0 -@ -o ${.TARGET}
 
-.PATH.dts: ${DTSDIR}
+.dts.dtbo:
+       ${CPP} -P -xassembler-with-cpp ${DTSPATH:@v@-I ${v}@} \
+           -include ${.IMPSRC} /dev/null | \
+       ${TOOL_DTC} ${DTSPATH:@v@-i ${v}@} -I dts -O dtb \
+           -@ -o ${.TARGET}
+
+.PATH.dts: ${DTSDIR} ${DTS_OVERLAYDIR}
 
 DEPS+= ${DTS:.dts=.dtd}
-DTB= ${DTS:.dts=.dtb}
+DEPS+= ${DTS_OVERLAYS:.dts=.dtdo}
+DTB=  ${DTS:.dts=.dtb}
+DTBO= ${DTS_OVERLAYS:.dts=.dtbo}
 
-all: ${DTB}
+all: ${DTB} ${DTBO}