Allow adding multiple device tree overlay blobs to an image and
generate configurations for each of them.
This is useful on boards with modern U-Boot which allow e.g. user-
configurable peripherals ("shields") in that way.
Note that currently, each generated configuration adds exactly one
overlay on top of the base image, ie. adding multiple overlays at the
same time is not yet supported.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
printf "\n\t-d ==> include Device Tree Blob 'dtb'"
printf "\n\t-r ==> include RootFS blob 'rootfs'"
printf "\n\t-H ==> specify hash algo instead of SHA1"
printf "\n\t-d ==> include Device Tree Blob 'dtb'"
printf "\n\t-r ==> include RootFS blob 'rootfs'"
printf "\n\t-H ==> specify hash algo instead of SHA1"
- printf "\n\t-o ==> create output file 'its_file'\n"
+ printf "\n\t-o ==> create output file 'its_file'"
+ printf "\n\t-O ==> create config with dt overlay 'name:dtb'"
+ printf "\n\t\t(can be specified more than once)\n"
INITRDNUM=1
HASH=sha1
LOADABLES=
INITRDNUM=1
HASH=sha1
LOADABLES=
-while getopts ":A:a:c:C:D:d:e:f:i:k:n:o:v:r:S" OPTION
+while getopts ":A:a:c:C:D:d:e:f:i:k:n:o:O:v:r:S" OPTION
do
case $OPTION in
A ) ARCH=$OPTARG;;
do
case $OPTION in
A ) ARCH=$OPTARG;;
k ) KERNEL=$OPTARG;;
n ) FDTNUM=$OPTARG;;
o ) OUTPUT=$OPTARG;;
k ) KERNEL=$OPTARG;;
n ) FDTNUM=$OPTARG;;
o ) OUTPUT=$OPTARG;;
+ O ) DTOVERLAY="$DTOVERLAY ${OPTARG}";;
r ) ROOTFS=$OPTARG;;
S ) HASH=$OPTARG;;
v ) VERSION=$OPTARG;;
r ) ROOTFS=$OPTARG;;
S ) HASH=$OPTARG;;
v ) VERSION=$OPTARG;;
COMPATIBLE_PROP="compatible = \"${COMPATIBLE}\";"
fi
COMPATIBLE_PROP="compatible = \"${COMPATIBLE}\";"
fi
+[ "$DTOVERLAY" ] && {
+ dtbsize=$(wc -c "$DTB" | cut -d' ' -f1)
+ DTADDR=$(printf "0x%08x" $(($LOAD_ADDR - $dtbsize)) )
+}
+
# Conditionally create fdt information
if [ -n "${DTB}" ]; then
FDT_NODE="
# Conditionally create fdt information
if [ -n "${DTB}" ]; then
FDT_NODE="
${COMPATIBLE_PROP}
data = /incbin/(\"${DTB}\");
type = \"flat_dt\";
${COMPATIBLE_PROP}
data = /incbin/(\"${DTB}\");
type = \"flat_dt\";
+ ${DTADDR:+load = <${DTADDR}>;}
arch = \"${ARCH}\";
compression = \"none\";
hash@1 {
arch = \"${ARCH}\";
compression = \"none\";
hash@1 {
LOADABLES="${LOADABLES:+$LOADABLES, }\"rootfs-${ROOTFSNUM}\""
fi
LOADABLES="${LOADABLES:+$LOADABLES, }\"rootfs-${ROOTFSNUM}\""
fi
+# add DT overlay blobs
+FDTOVERLAY_NODE=""
+OVCONFIGS=""
+[ "$DTOVERLAY" ] && for overlay in $DTOVERLAY ; do
+ overlay_blob=${overlay##*:}
+ ovname=${overlay%%:*}
+ ovnode="fdt-$ovname"
+ ovsize=$(wc -c "$overlay_blob" | cut -d' ' -f1)
+ echo "$ovname ($overlay_blob) : $ovsize" >&2
+ DTADDR=$(printf "0x%08x" $(($DTADDR - $ovsize)))
+ FDTOVERLAY_NODE="$FDTOVERLAY_NODE
+
+ $ovnode {
+ description = \"${ARCH_UPPER} OpenWrt ${DEVICE} device tree overlay $ovname\";
+ ${COMPATIBLE_PROP}
+ data = /incbin/(\"${overlay_blob}\");
+ type = \"flat_dt\";
+ arch = \"${ARCH}\";
+ load = <${DTADDR}>;
+ compression = \"none\";
+ hash@1 {
+ algo = \"crc32\";
+ };
+ hash@2 {
+ algo = \"${HASH}\";
+ };
+ };
+"
+ OVCONFIGS="$OVCONFIGS
+
+ config-$ovname {
+ description = \"OpenWrt ${DEVICE} with $ovname\";
+ kernel = \"kernel-1\";
+ fdt = \"fdt-$FDTNUM\", \"$ovnode\";
+ ${LOADABLES:+loadables = ${LOADABLES};}
+ ${COMPATIBLE_PROP}
+ ${INITRD_PROP}
+ };
+ "
+done
+
# Create a default, fully populated DTS file
DATA="/dts-v1/;
# Create a default, fully populated DTS file
DATA="/dts-v1/;
};
${INITRD_NODE}
${FDT_NODE}
};
${INITRD_NODE}
${FDT_NODE}
${COMPATIBLE_PROP}
${INITRD_PROP}
};
${COMPATIBLE_PROP}
${INITRD_PROP}
};