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#!/bin/bash
set -e
set -o pipefail
unset dts
unset SED
while [ "$1" != "" ]
do
case "$1"
in
--dts) dts="$2"; shift 2;;
*) echo "$0: Unknown argument $1"; exit 1;;
esac
done
if [ "${dts}" == "" ]
then
echo "$0: please provide '--dts' option" >&2
exit 1
fi
# When installed on MacOS with Homebrew, GNU sed is named gsed.
# If gsed exists, use it.
if [ "`which gsed`" == "" ]; then
SED=sed
else
SED=gsed
fi
# Add numintbits for the clic node if it doesn't exist
if [ `grep -c 'sifive,clic0' ${dts}` -ne 0 ]; then
if [ `grep -c 'sifive,numintbits' ${dts}` -eq 0 ]; then
echo "$0: Clic missing numintbits in ${dts}."
${SED} -i 's/interrupt-controller@2000000 {/interrupt-controller@2000000 {\n\t\t\tsifive,numintbits = <2>;/g' ${dts}
echo -e "$0: \tAdded numintbits to clic."
fi
fi
# Add compat string for the global-interrupt node if it doesn't exist
if [ `grep -c 'global-external-interrupts {' ${dts}` -ne 0 ]; then
if [ `grep -c 'sifive,global-external-interrupts0' ${dts}` -eq 0 ]; then
echo "$0: Global external interrupts missing compat string in ${dts}."
${SED} -i 's/global-external-interrupts {/global-external-interrupts {\n\t\t\tcompatible = "sifive,global-external-interrupts0";/g' ${dts}
echo -e "$0: \tAdded compat string to global-external-interrupts."
fi
fi
# Add compat string for the local-interrupt node if it doesn't exist
if [ `grep -c 'local-external-interrupts-0 {' ${dts}` -ne 0 ]; then
if [ `grep -c 'sifive,local-external-interrupts0' ${dts}` -eq 0 ]; then
echo "$0: Local external interrupts missing compat string in ${dts}."
${SED} -i 's/local-external-interrupts-0 {/local-external-interrupts {\n\t\t\tcompatible = "sifive,local-external-interrupts0";/g' ${dts}
echo -e "$0: \tAdded compat string to local-external-interrupts-0."
fi
fi
# Add a stdout-path to the chosen node if one doesn't exist and a serial port does
if [ `grep -c 'stdout-path' ${dts}` -eq 0 ]; then
if [ `grep -c 'sifive,uart0' ${dts}` -ne 0 ]; then
echo "$0: stdout-path property not given, but a UART device exists."
serial_node=`grep -oP "serial@\d+" ${dts} | sort | uniq | head -n 1`
serial_path="/soc/${serial_node}:115200"
if [ `grep -c 'chosen' ${dts}` -eq 0 ]; then
${SED} -i "/cpus/i chosen {\n};" ${dts}
fi
${SED} -i "/chosen/a stdout-path=\"${serial_path}\";" ${dts}
echo -e "$0: \tAdded stdout-path ${serial_path}"
fi
fi
# FPGA targets need a 0x400000 byte offset into their SPI flash
# Is the target an FPGA?
if [ `echo ${dts} | grep -c 'arty'` -ne 0 -o `echo ${dts} | grep -c 'fpga'` -ne 0 ] ; then
# Is there a metal,entry property in the chosen node?
if [ `grep -c 'metal,entry' ${dts}` -eq 0 ] ; then
echo "$0: FPGA target needs metal,entry property to set boot offset."
# Find the SPI device with the lowest base address
first_spi_node=`grep -oE "spi@[[:xdigit:]]+?" ${dts} | sort | head -n 1`
# Get the DTS node label of that SPI device
spi_entry_label=`grep -oE "[^[:space:]]+?:\s+?${first_spi_node}" ${dts} | cut -d ':' -f 1`
if [ `grep -c 'chosen' ${dts}` -eq 0 ]; then
${SED} -i "/cpus/i chosen {\n};" ${dts}
fi
${SED} -i "/chosen/a metal,entry = <&${spi_entry_label} 0x400000>;" ${dts}
echo -e "$0: \tAdded metal,entry for SPI node ${first_spi_node} with label ${spi_entry_label}"
fi
fi
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