Integrate device-tree upstream files into the build process:

(1) Invoke cpp to bring in files via #include (although the old
    /include/ stuff is supported still).
(2) bring in files from either vendor tree or freebsd-custom files
    when building.
(3) move all dts* files from sys/boot/fdt/dts to
    sys/boot/fdt/dts/${MACHINE} as appropriate.
(4) encode all the magic to do the build in sys/tools/fdt/make_dtb.sh
    so that the different places in the tree use the exact same logic.
(5) switch back to gpl dtc by default. the bsdl one in the tree has
    significant issues not easily addressed by those unfamiliar with
    the code.

1 files changed, 11 insertions, 0 deletions

diff --git a/sys/tools/fdt/make_dtb.sh b/sys/tools/fdt/make_dtb.sh
new file mode 100755
index 0000000..8e4892e
--- /dev/null
+++ b/sys/tools/fdt/make_dtb.sh
@@ -0,0 +1,11 @@
+#!/bin/sh
+#
+# $FreeBSD$
+
+# Script generates dtb file ($3) from dts source ($2) in build tree S ($1)
+S=$1
+dts=$2
+dtb=$3
+
+cpp -x assembler-with-cpp -I $S/gnu/dts/include -I $S/boot/fdt/dts/${MACHINE} -I $S/gnu/dts/${MACHINE} -include $dts /dev/null | 
+	dtc -O dtb -o $dtb -b 0 -p 1024 -i $S/boot/fdt/dts -i $S/gnu/dts/${MACHINE}