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Arm Backend: Expose PMU trace output from FVP run #14401

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merged 1 commit into from
Sep 18, 2025
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Arm Backend: Expose PMU trace output from FVP run #14401

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13 changes: 13 additions & 0 deletions backends/arm/scripts/run_fvp.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,7 @@ data_file=""
target="ethos-u55-128"
timeout="600"
etrecord_file=""
trace_file=""

help() {
echo "Usage: $(basename $0) [options]"
Expand All @@ -31,6 +32,7 @@ help() {
echo " --target=<TARGET> Target to build and run for Default: ${target}"
echo " --timeout=<TIME_IN_SEC> Maximum target runtime, used to detect hanging, might need to be higer on large models Default: ${timeout}"
echo " --etrecord=<FILE> If ETDump is used you can supply a ETRecord file matching the PTE"
echo " --trace_file=<FILE> File to write PMU trace output to"
exit 0
}

Expand All @@ -42,6 +44,7 @@ for arg in "$@"; do
--target=*) target="${arg#*=}";;
--timeout=*) timeout="${arg#*=}";;
--etrecord=*) etrecord_file="${arg#*=}";;
--trace_file=*) trace_file="${arg#*=}";;
*)
;;
esac
Expand Down Expand Up @@ -86,13 +89,22 @@ fi

log_file=$(mktemp)

extra_args_u55=()
extra_args_u85=()

if [[ -n "${trace_file}" ]]; then
extra_args_u55+=(-C "ethosu.extra_args=--pmu-trace ${trace_file}")
extra_args_u85+=(-C "mps4_board.subsystem.ethosu.extra_args=--pmu-trace ${trace_file}")
fi

if [[ ${target} == *"ethos-u55"* ]]; then
${nobuf} ${fvp_model} \
-C ethosu.num_macs=${num_macs} \
-C mps3_board.visualisation.disable-visualisation=1 \
-C mps3_board.telnetterminal0.start_telnet=0 \
-C mps3_board.uart0.out_file='-' \
-C mps3_board.uart0.shutdown_on_eot=1 \
"${extra_args_u55[@]}" \
-a "${elf_file}" \
${data_file} \
--timelimit ${timeout} 2>&1 | sed 's/\r$//' | tee ${log_file} || true # seconds
Expand All @@ -105,6 +117,7 @@ elif [[ ${target} == *"ethos-u85"* ]]; then
-C mps4_board.telnetterminal0.start_telnet=0 \
-C mps4_board.uart0.out_file='-' \
-C mps4_board.uart0.shutdown_on_eot=1 \
"${extra_args_u85[@]}" \
-a "${elf_file}" \
${data_file} \
--timelimit ${timeout} 2>&1 | sed 's/\r$//' | tee ${log_file} || true # seconds
Expand Down
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