os-kernel/scripts/test-firmware

#!/bin/bash
set -e

cd $(dirname $0)/..

FIRMWARE=$(readlink -f firmware/${KERNEL_ARCH}/firmware)
echo "FIRMWARE test: $FIRMWARE"

if [ ! -e linux-firmware ]; then
    git clone git://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git
    pushd linux-firmware
    git checkout -b ${FIRMWARE_TAG} ${FIRMWARE_TAG}
    popd
fi

cd linux-firmware

for i in $(<$FIRMWARE); do
    if [ -e $i ]; then
        glob=$(echo $i | sed 's/^\(.*\)-\([^-]*\)\.\([^.]*\)/\1-*.\3/')
        #echo Found $i, trying $glob
        latest=$(ls $glob | xargs -n1 -I{} -- git log -1 --format="%ai {}" {} | sort | tail -n1 | cut -d " " -f4)
        if [ "$latest" != "$i" ]; then
            echo "ERROR: Firmware $i in $FIRMWARE is not the latest - update to $latest"
            STOP="1"
            echo $latest >> new-firmware
        else
            echo $i >> new-firmware
        fi
    else
        echo WARNING: Firmware listed in $FIRMWARE Not found $i
    fi
done

if [ "$STOP" != "" ]; then
    echo "Update the $FIRMWARE file:"
    cat new-firmware
    exit 1
fi