Downloads the mt7986 firmware files from a given mtk-openwrt-feeds commit hash

get-mt7986-fw.sh

#!/bin/sh

if [ $# -eq 0 ]; then
    printf "No arguments supplied. Please provide the commit hash for the firmware release you wish to download.\n"
    exit 1
fi

# $1 will be the incoming commit hash
fw_url="https://git01.mediatek.com/plugins/gitiles/openwrt/feeds/mtk-openwrt-feeds/+archive/${1}/autobuild_mac80211_release/package/kernel/mt76/src/firmware.tar.gz"

orig_pwd="$(pwd)"
os_release_name=$(grep -e '^NAME=' /etc/os-release | cut -d= -f2 | tr -d '"')
if [ "$os_release_name" == "OpenWrt" ]; then
    orig_pwd="/tmp"
fi

fw_path="$orig_pwd/mt7986-firmware"
fw_tmp_path="$fw_path/tmp"
fw_src_file="$fw_tmp_path/fw.tar.gz"
dl_bin="curl"

os_name="$(uname)"

cleanup() {
    printf " > Cleaning up...\n\n"
    rm -r "$fw_tmp_path"
}

which "$dl_bin" > /dev/null 2>&1
if [ $? -eq 1 ]; then
    dl_bin="wget"
    which "$dl_bin" > /dev/null 2>&1
    if [ $? -eq 1 ]; then
        printf "Could not locate 'curl' or 'wget' on this host. Please install one of these tools and try again.\n"
        exit 1
    fi
fi

printf "> This is a $os_name system\n\n"
printf "> Will use '$dl_bin' as the download tool\n\n"

printf " > Creating firmware temporary directory: %s\n\n" "$fw_tmp_path"
mkdir -p "$fw_tmp_path"

printf " > Pulling requested firmware source at commit: %s...\n\n" "$1"
if [ "$dl_bin" == "curl" ]; then
    eval "$dl_bin" -o "$fw_src_file" "$fw_url"
else
    eval "$dl_bin" -O "$fw_src_file" "$fw_url"
fi
printf "\n"

printf " > Expanding firmware source...\n\n"
tar -C "$fw_tmp_path" -xzvf "$fw_src_file"
printf "\n"

printf " > Moving mt7986 firmware binaries to: %s\n\n" "$fw_path"
if [ "$os_name" = "Darwin" ]; then
    find -E "$fw_tmp_path/" -type f -regex ".*mt7986_(r|w).*\.bin" -exec mv {} "$fw_path/" \;
elif [ "$os_name" = "Linux" ]; then
    find "$fw_tmp_path/" -type f -regex ".*mt7986_\(r\|w\).*\.bin" -exec mv {} "$fw_path/" \;
else
    printf "Unsupported OS. This can be fixed, but I need more details from you.\n\n"
    cleanup
    exit 1
fi

cleanup

printf " > The calculated md5 for the firmware files are:\n"
eval $(which md5sum) "$fw_path/*"
printf "\n"

cd "$orig_pwd" || exit 1
printf "> Done!\n\n"

1. For some reason + is not recognized in regexp .*mt7986_\(r\|w\).+\.bin by openwrt#find. I have changed it to *

2. curl ist not installed per default

@gassan Many thanks for the feedback! I updated the script to just use * for the regex expressions as + really didn't provide much benefit in this case and is less portable, as you pointed out.

Regarding curl not being installed, that's a great point. I hadn't actually tested this on any OpenWrt box directly as I had originally assumed the main users of it would be building their own images and could run this on a build host. But I went ahead and updated it to recognize if OpenWrt is the host OS and account for wget instead of curl in that case. It also will set the base directory for the mt7986-firmware path to /tmp on OpenWrt as this is the safest place to ensure the filesystem on smaller devices is not consumed by this download.

If you have any other feedback or issues, keep it coming here 😄 Thanks!

It works perfectly now, thank you. And sure, its nice to point downloads to /tmp folder (also tested).

How do you find the md5sum for ${1} argument? I am running 23.05 but would like a newer FW (if it has any improvements)?