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#!/bin/sh
set -e
# adjust bl33 load address in existing FIP
FDTGET=${FDTGET:-fdtget}
FDTPUT=${FDTPUT:-fdtput}
if [ "$1" != "-l" ] || [ "$#" -ne 3 ]; then
echo "USAGE: $0 -l NT_LOAD_ADDR FIP" 1>&2
exit 1
fi
NEW_LOAD_ADDR=$(($2))
FIP=$3
FWCONFIG=".$FIP.fw-config.bin"
fiptool unpack --fw-config "$FWCONFIG" --force "$FIP"
MAX_SIZE="$($FDTGET -t u $FWCONFIG /dtb-registry/nt_fw max-size)"
set $($FDTGET -t u $FWCONFIG /dtb-registry/nt_fw load-address)
ENTRY=$1
OLD_LOAD_ADDR=$2
if [ $NEW_LOAD_ADDR -lt $OLD_LOAD_ADDR ] ||
[ $NEW_LOAD_ADDR -ge $((OLD_LOAD_ADDR + MAX_SIZE)) ]; then
printf "New load address 0x%08x out of bounds [0x%08x-0x%08x)\n" \
$NEW_LOAD_ADDR $OLD_LOAD_ADDR $((OLD_LOAD_ADDR + MAX_SIZE)) 1>&2
exit 1
fi
$FDTPUT -t u $FWCONFIG /dtb-registry/nt_fw load-address $ENTRY $NEW_LOAD_ADDR
$FDTPUT -t u $FWCONFIG /dtb-registry/nt_fw max-size \
$((MAX_SIZE + OLD_LOAD_ADDR - NEW_LOAD_ADDR))
fiptool update $FIP --fw-config $FWCONFIG
rm $FWCONFIG
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