use FIT image for rcar_s4 flasher

packages/jumpstarter-driver-flashers/oci_bundles/rcar_s4/add_kernel.sh

@@ -0,0 +1,72 @@
+#!/bin/bash
+
+KVER="5.14.0-587.536.el9iv.aarch64"
+KMOD=(
+	# R-Car S4 storage
+	fixed
+	renesas_sdhi_internal_dmac
+	mmc_block
+	# R-Car S4 networking
+	gpio-rcar
+	r8a779f0-ether-serdes
+	marvell10g
+	rswitch
+)
+ODIR="overlay"
+
+cd "$(dirname "$(readlink -f "$0")")"
+BASE=$PWD
+
+url="https://cbs.centos.org/kojifiles/packages/kernel-automotive"
+url="$url/$(echo $KVER | sed -r 's|-|/|; s|\.([^.]*)$|/\1|')"
+pkgs=(
+	kernel-automotive-core-$KVER.rpm
+	kernel-automotive-modules-$KVER.rpm
+	kernel-automotive-modules-core-$KVER.rpm
+)
+
+mkdir -p kernel
+cd kernel
+
+# fetch kernel rpm packages
+for pkg in ${pkgs[@]}; do
+	[[ -f $pkg ]] || wget "$url/$pkg" || exit 1
+done
+
+# extract kernel rpm packages
+if ! [[ -d lib ]]; then
+	for pkg in ${pkgs[@]}; do
+		echo -n "extracting $pkg ... "
+		rpm2cpio $pkg | cpio -id
+	done
+	echo "extracting kernel ..."
+	unzboot lib/modules/$KVER/vmlinuz vmlinuz
+	ln -sfn lib/modules/$KVER/dtb dtb
+	echo "updating module deps ..."
+	depmod --errsyms --filesyms lib/modules/$KVER/System.map --basedir $PWD $KVER
+	echo "building required modules list ..."
+	for mod in ${KMOD[@]}; do
+		modprobe -d $PWD -S $KVER --show-depends $mod
+	done | sed "s|$PWD||; s|^builtin|# builtin|; s|\\.ko\\.zst|.ko|" > modlist
+fi
+
+cd $OLDPWD
+
+mkdir -p $ODIR/lib/modules $ODIR/etc/init.d || exit 1
+echo "installing modules into overlay dir ..."
+sed -nr 's|^insmod ||p' < kernel/modlist | while read mod; do
+	mkdir -p "$ODIR$(dirname $mod)"
+	zstd -d "kernel$mod.zst" -o "$ODIR$mod"
+done
+
+echo "adding modules start-up script to overlay ..."
+script=$ODIR/etc/init.d/S01modules
+cat >$script <<EOF
+#!/bin/sh
+
+if [ "\$1" = "start" ]; then
+$(cat kernel/modlist)
+fi
+EOF
+chmod +x $script
+

packages/jumpstarter-driver-flashers/oci_bundles/rcar_s4/build_flasher.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+dnf install --setopt=install_weak_deps=false -y git make gcc gcc-c++ which file diffutils wget cpio rsync bc lzop zip patch perl tar qemu-system-aarch64 qemu-img unzboot uboot-tools kmod
+
+git clone --depth 1 --branch 2025.05-rc2  https://github.com/buildroot/buildroot /buildroot
+
+./add_kernel.sh
+cp -R overlay /buildroot
+cp renesas_s4_defconfig  /buildroot/configs/
+( cd /buildroot; make renesas_s4_defconfig && make )
+mkimage -f flasher.its data/flasher.itb

packages/jumpstarter-driver-flashers/oci_bundles/rcar_s4/flasher.its

@@ -0,0 +1,78 @@
+/dts-v1/;
+
+/ {
+	description = "R-Car S4 flasher FIT Image";
+	#address-cells = <1>;
+
+	images {
+		kernel {
+			description = "Kernel";
+			data = /incbin/("kernel/vmlinuz");
+			type = "kernel";
+			arch = "arm64";
+			os = "linux";
+			compression = "none";
+			load = <0x48080000>;
+			entry = <0x48080000>;
+			hash {
+				algo = "sha256";
+			};
+		};
+		fdt-spider {
+			description = "DTB 8779f0-spider";
+			data = /incbin/("kernel/dtb/renesas/r8a779f0-spider.dtb");
+			type = "flat_dt";
+			arch = "arm64";
+			compression = "none";
+			load = <0x48000000>;
+			entry = <0x48000000>;
+			hash {
+				algo = "sha256";
+			};
+		};
+		fdt-s4sk {
+			description = "DTB r8a779f4-s4sk";
+			data = /incbin/("kernel/dtb/renesas/r8a779f4-s4sk.dtb");
+			type = "flat_dt";
+			arch = "arm64";
+			compression = "none";
+			load = <0x48000000>;
+			entry = <0x48000000>;
+			hash {
+				algo = "sha256";
+			};
+		};
+		initrd {
+			description = "Initrd";
+			data = /incbin/("/buildroot/output/images/rootfs.cpio.lzo");
+			type = "ramdisk";
+			arch = "arm64";
+			os = "linux";
+			hash {
+				algo = "sha256";
+			};
+		};
+	};
+
+	configurations {
+		default = "spider";
+		spider {
+			description = "Boot R-Car S4 Spider";
+			kernel = "kernel";
+			fdt = "fdt-spider";
+			ramdisk = "initrd";
+			hash {
+				algo = "sha256";
+			};
+		};
+		s4sk {
+			description = "Boot R-Car S4 SK";
+			kernel = "kernel";
+			fdt = "fdt-s4sk";
+			ramdisk = "initrd";
+			hash {
+				algo = "sha256";
+			};
+		};
+	};
+};

packages/jumpstarter-driver-flashers/oci_bundles/rcar_s4/manifest.yaml

@@ -5,6 +5,7 @@ metadata:
 spec:
   manufacturer: Renesas
   link: "https://www.renesas.com/en/products/automotive-products/automotive-system-chips-socs/r-car-s4-automotive-system-chip-soc-car-servercommunication-gateway"
+  # boot default configuration R-Car S4 Spider, for S4SK use "bootm 0x58000000#s4sk"
   bootcmd: "bootm 0x58000000"
   shelltype: "busybox"
   login:

packages/jumpstarter-driver-flashers/oci_bundles/rcar_s4/overlay/etc/network/if-pre-up.d/wait-carrier.sh

@@ -0,0 +1,19 @@
+#!/bin/sh
+
+IF_WAIT_DELAY=30
+
+if [ "${IFACE}" != "lo" ]; then
+	ip link set ${IFACE} up
+	printf "Waiting for interface %s carrier" "${IFACE}"
+	while [ ${IF_WAIT_DELAY} -gt 0 ]; do
+		if [ "$(cat /sys/class/net/${IFACE}/carrier)" = "1" ]; then
+			printf "\n"
+			exit 0
+		fi
+		sleep 1
+		printf "."
+		: $((IF_WAIT_DELAY -= 1))
+	done
+	printf " timeout!\n"
+	exit 1
+fi

packages/jumpstarter-driver-flashers/oci_bundles/rcar_s4/renesas_s4_defconfig

@@ -0,0 +1,19 @@
+BR2_aarch64=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TARGET_GENERIC_HOSTNAME="flasher"
+BR2_TARGET_GENERIC_ISSUE="flasher"
+BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_EUDEV=y
+BR2_TARGET_GENERIC_ROOT_PASSWD=""
+BR2_SYSTEM_DHCP="tsn0"
+BR2_ROOTFS_OVERLAY="$(CONFIG_DIR)/overlay"
+BR2_PACKAGE_CA_CERTIFICATES=y
+BR2_PACKAGE_OPENSSL=y
+BR2_PACKAGE_LIBCURL=y
+BR2_PACKAGE_LIBCURL_CURL=y
+BR2_PACKAGE_NTP=y
+BR2_PACKAGE_NTP_SNTP=y
+BR2_PACKAGE_NTP_NTPDATE=y
+BR2_TARGET_ROOTFS_CPIO=y
+BR2_TARGET_ROOTFS_CPIO_LZO=y
+BR2_PACKAGE_DROPBEAR=n
+# BR2_TARGET_ROOTFS_TAR is not set