[U-Boot] [PATCH 13/17] sunxi: A64: Pine64: introduce FIT generator script

[Andre Przywara <andre.przywara@arm.com>]

Now that the Makefile can call a generator script to build a more
advanced FIT image, let's use this feature to address the needs of
Allwinner A64 boards.
The (DTB stripped) U-Boot binary and the ATF are static, but we allow
an arbitrary number of supported device trees to be passed.
The script enters both a DT entry in the /images node and the respective
subnode in /configurations to support all listed DTBs.

This requires to copy the ARM Trusted Firmware build (bl31.bin) into
the U-Boot source directory (or to create a symlink to it).

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
---
 board/sunxi/mksunxi_fit_atf.sh | 73 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 73 insertions(+)
 create mode 100755 board/sunxi/mksunxi_fit_atf.sh

diff --git a/board/sunxi/mksunxi_fit_atf.sh b/board/sunxi/mksunxi_fit_atf.sh
new file mode 100755
index 0000000..afa22e8
--- /dev/null
+++ b/board/sunxi/mksunxi_fit_atf.sh
@@ -0,0 +1,73 @@
+#!/bin/sh
+#
+# script to generate FIT image source for 64-bit sunxi boards with
+# ARM Trusted Firmware and multiple device trees (given on the command line)
+#
+# usage: $0 <dt_name> [<dt_name> [<dt_name] ...]
+
+cat << __HEADER_EOF
+/dts-v1/;
+
+/ {
+	description = "Configuration to load ATF before U-Boot";
+	#address-cells = <1>;
+
+	images {
+		uboot at 1 {
+			description = "U-Boot (64-bit)";
+			data = /incbin/("u-boot-nodtb.bin");
+			type = "standalone";
+			arch = "arm64";
+			compression = "none";
+			load = <0x4a000000>;
+		};
+		atf at 1 {
+			description = "ARM Trusted Firmware";
+			data = /incbin/("bl31.bin");
+			type = "firmware";
+			arch = "arm64";
+			compression = "none";
+			load = <0x44000>;
+			entry = <0x44000>;
+		};
+__HEADER_EOF
+
+cnt=1
+for dtname in $*
+do
+	cat << __FDT_IMAGE_EOF
+		fdt@$cnt {
+			description = "$(basename $dtname .dtb)";
+			data = /incbin/("$dtname");
+			type = "flat_dt";
+			compression = "none";
+		};
+__FDT_IMAGE_EOF
+	cnt=$((cnt+1))
+done
+
+cat << __CONF_HEADER_EOF
+	};
+	configurations {
+		default = "config at 1";
+
+__CONF_HEADER_EOF
+
+cnt=1
+for dtname in $*
+do
+	cat << __CONF_SECTION_EOF
+		config@$cnt {
+			description = "$(basename $dtname .dtb)";
+			firmware = "uboot at 1";
+			loadables = "atf@1";
+			fdt = "fdt@$cnt";
+		};
+__CONF_SECTION_EOF
+	cnt=$((cnt+1))
+done
+
+cat << __ITS_EOF
+	};
+};
+__ITS_EOF
-- 
2.8.2