u-boot-rpi4-scripts

u-boot-fit

#!/bin/bash
set -euo pipefail

if [ "$(id -u)" -ne 0 ]; then
    echo "Error: This script must be run as root." >&2
    exit 1
fi

generate_fit() {
	local version="$1"
	local its="/tmp/boot-${version}.its"
	local itb="/boot/boot-${version}.itb"

	cat > "$its" <<EOF
/dts-v1/;

/ {
    description = "Debian ${version}";
    #address-cells = <1>;

    images {
        kernel {
            data = /incbin/("/boot/vmlinuz-${version}");
            type = "kernel";
            arch = "arm64";
            os = "linux";
            compression = "none";
            load = <0x80000>;
            entry = <0x80000>;
        };

        ramdisk {
            data = /incbin/("/boot/initrd.img-${version}");
            type = "ramdisk";
            arch = "arm64";
            os = "linux";
        };

        fdt {
            data = /incbin/("/boot/firmware/bcm2711-rpi-4-b.dtb");
            type = "flat_dt";
            arch = "arm64";
            compression = "none";
        };
    };

    configurations {
        default = "conf";
        conf {
            kernel = "kernel";
            ramdisk = "ramdisk";
            fdt = "fdt";
        };
    };
};
EOF

	mkimage -f "$its" "$itb"

	rm "$its"
}

if [ $# -ge 1 ]; then
    generate_fit "$1"
else
    for kernel in /boot/vmlinuz-*; do
        version="$(basename "$kernel" | sed 's/^vmlinuz-//')"
        generate_fit "$version"
    done
fi

u-boot-menu

#!/bin/bash
set -euo pipefail

if [ "$(id -u)" -ne 0 ]; then
    echo "Error: This script must be run as root." >&2
    exit 1
fi

cat > "/tmp/u-boot.env.tmp" <<EOF
bootmenu_delay=5
EOF

i=0
for itb in $(ls /boot/*.itb | sort -Vr); do
    [ -e "$itb" ] || continue

    file="$(basename "$itb")"
    version="${file#boot-}"
    version="${version%.itb}"

    echo "bootmenu_${i}=Debian ${version}=load mmc 0:2 0x10000000 ${file}; bootm 0x10000000" >> "/tmp/u-boot.env.tmp"
    i=$((i + 1))
done

mkenvimage -s 0x4000 -o "/boot/firmware/u-boot.env" "/tmp/u-boot.env.tmp"

rm -f "/tmp/u-boot.env.tmp"

update-u-boot

#!/bin/bash
set -euo pipefail

if [ "$(id -u)" -ne 0 ]; then
    echo "Error: This script must be run as root." >&2
    exit 1
fi


/usr/local/bin/u-boot-fit
/usr/local/bin/u-boot-menu