Modularise image handling

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

1 files changed, 83 insertions, 0 deletions

diff --git a/images/FIT.sh b/images/FIT.sh
new file mode 100644
index 0000000..0ed5482
--- /dev/null
+++ b/images/FIT.sh
@@ -0,0 +1,83 @@
+# SPDX-License-Identifier: GPL-2.0+
+
+make_FIT_image() {
+	local kernel_its=$output_dir/arch/$arch/boot/kernel_fdt.its
+
+	cat <<EOF > $kernel_its
+/dts-v1/;
+/ {
+	description = "Kernel + FDT image for $board board";
+	#address-cells = <1>;
+
+	images {
+		kernel {
+			description = "Linux kernel";
+			data = /incbin/("$output_dir/arch/$arch/boot/$image_kernel");
+			type = "kernel";
+			arch = "$arch";
+			os = "linux";
+			compression = "none";
+			load = <$LOADADDR>;
+			entry = <$LOADADDR>;
+			hash-1 {
+				algo = "crc32";
+			};
+			hash-2 {
+				algo = "sha1";
+			};
+		};
+EOF
+
+	local dtb
+
+	for dtb in $DTBS ; do
+		local src=${dtb/:*/}
+		local dst=${dtb/*:/}
+		dst=${dst/*\//}
+
+		cat <<EOF >> $kernel_its
+		fdt-$dst {
+			description = "Flattened Device Tree blob $dst";
+			data = /incbin/("$output_dir/arch/$arch/boot/dts/$src");
+			type = "flat_dt";
+			arch = "$arch";
+			compression = "none";
+			hash-1 {
+				algo = "crc32";
+			};
+			hash-2 {
+				algo = "sha1";
+			};
+		};
+EOF
+	done
+
+	local config=$(echo $DTBS | sed 's/.*[:/]//')
+	cat <<EOF >> $kernel_its
+	};
+
+	configurations {
+		default = "conf-$config";
+EOF
+	for dtb in $DTBS ; do
+		local dst=${dtb/*:/}
+		dst=${dst/*\//}
+
+		cat <<EOF >> $kernel_its
+		conf-$dst {
+			description = "Boot Linux kernel with $dst blob";
+			kernel = "kernel";
+			fdt = "fdt-$dst";
+		};
+EOF
+	done
+
+	cat <<EOF >> $kernel_its
+	};
+};
+EOF
+
+	PATH="$output_dir/scripts/dtc:$PATH" mkimage -f $kernel_its ${kernel_its/its/itb}
+}
+
+image_file=$output_dir/arch/$arch/boot/kernel_fdt.itb