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ba12d53a61
Source updates may break building older releases (eg kernel#48 source breaks dtb includes for kernel#41) * Only build latest * offer to update sources
103 lines
2.8 KiB
Bash
Executable File
103 lines
2.8 KiB
Bash
Executable File
#!/bin/bash
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# Takes a list of dts files for the specified architecture and emits appropriate compiled dtb files for use in customised deviceTree setups.
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#
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dtc=/usr/bin/dtc
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cdir=`pwd`
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versions=`dpkg --list | grep linux-image-[0-9].* | cut -d" " -s -f 3 | sed s/^linux-image-// | sort -V`
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current=`/usr/bin/uname -r`
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read -p "Update source tree (may be slow)? [y/N]: " choice
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if [ ! -z "$choice" ] ; then
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if [ "$choice" == 'y' ] ; then
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cd ../source
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apt source linux-riscv
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fi
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fi
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echo -e "\nAvailable kernels:"
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option=0
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declare -a klist
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for ver in $versions ; do
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option=$((option+1))
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klist[$option]=$ver
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echo -n " [$option] $ver"
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if [ $ver == $current ] ; then
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echo " - currently running kernel"
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else
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echo
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fi
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done
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read -p "Which kernel to build? [$option]: " choice
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if [ -z "$choice" ] ; then
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choice=$option
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else
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echo
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echo "WARNING: building older versions may fail if the source tree includes have changed with more recent kernels"
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echo
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fi
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revision=${klist[$choice]}
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if [ -z "$revision" ] ; then
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echo "No valid kernel selected, exiting."
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exit
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fi
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echo -ne "\nBuilding for kernel: $revision"
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echo
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# Ensure sure build root exists and is clean
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if [ -d "$cdir/$revision" ]; then
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echo "Cleaning existing $revision build directory"
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rm -f $revision/*.dts $revision/*.dtsi $revision/*.dtb
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else
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echo "Creating new build directory: $revision"
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mkdir $revision
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fi
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# Compile
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cd $cdir
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echo -e "\nCompiling against headers for $revision"
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echo "Precompiling all includes in build root into $revision build directory"
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for file in `ls *.dtsi`; do
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echo " $file -> $revision/${file##*/}"
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cpp -I/usr/src/linux-headers-$revision/include/ -nostdinc -undef -x assembler-with-cpp $file > $revision/${file##*/}
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if [ ! -s "$revision/${file##*/}" ] ; then
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rm "$revision/${file##*/}"
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echo "**** ERROR ****"
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echo "Precompile failed for include: $revision/${file##*/}"
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exit 1
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fi
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done
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echo "Precompiling all sources in build root into $revision build directory"
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for file in `ls *.dts`; do
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echo " $file -> $revision/${file##*/}"
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cpp -I/usr/src/linux-headers-$revision/include/ -nostdinc -undef -x assembler-with-cpp $file > $revision/${file##*/}
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if [ ! -s "$revision/${file##*/}" ] ; then
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rm "$revision/${file##*/}"
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echo "**** ERROR ****"
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echo "Precompile failed for source: $revision/${file##*/}"
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exit 1
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fi
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done
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echo "Compiling all device tree sources in $revision build directory"
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cd $revision
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for file in `ls *.dts`; do
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out=${file/.dts/.dtb}
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echo " $revision/$file -> $revision/$out"
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$dtc $file > $out
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if [ ! -s "$out" ] ; then
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rm "$out"
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echo "**** ERROR ****"
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echo "Compile failed for: $out"
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exit 1
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fi
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done
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echo -e "\nSuccess. Consider running 'flash_latest.sh' to make permanent (see docs)"
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