scripts: Add chip verilator simulation script

Used in `m matcha_hw_verilator_sim_run`, but can also be used as a
standalone script

Change-Id: I87632400a1abb07834fe918fe24ec0a19ba3fe8c

run-chip-verilator-sim.sh

diff --git a/run-chip-verilator-sim.sh b/run-chip-verilator-sim.sh
new file mode 100755
index 0000000..ff26460
--- /dev/null
+++ b/run-chip-verilator-sim.sh
@@ -0,0 +1,30 @@
+#! /bin/bash
+# Run verilator testbench simulation.
+
+if [[ $# -lt 4 || $1 == "--help" ]]; then
+  echo "Usage: run-chip-verilator-sim.sh <verilator testbech> <rom binary> <flash binary> <otp binary> [OPTIONS]"
+  exit 0
+fi
+
+VCHIP_TB=$1
+ROM_BIN=$2
+FLASH_BIN=$3
+OTP_BIN=$4
+
+shift 4
+
+if [[ ! -f $(realpath ${VCHIP_TB}) ]]; then
+  echo "Verilator testbench not found. Please run \`m matcha_hw_verilator_sim\` or generate the testbench first."
+  exit 1
+fi
+
+if [[ ! -f $(realpath ${ROM_BIN}) ]] || [[ ! -f $(realpath ${FLASH_BIN}) ]] ||
+   [[ ! -f $(realpath ${OTP_BIN}) ]]; then
+  echo "Software binaries not found. Please run \`m opentitan_sw_verilator_sim\` or generate the SW binaries first."
+  exit 1
+fi
+
+${VCHIP_TB} \
+  "--meminit=rom,${ROM_BIN}" \
+  "--meminit=flash,${FLASH_BIN}" \
+  "--meminit=otp,${OTP_BIN}" $@