Arm backend: Add test_arm_baremetal.sh checks (#10057)

Test_arm_baremetal.sh didnt warn about missing setup_path.sh like other
scripts. This patch makes it more like others.

Author: perheld

backends/arm/test/test_arm_baremetal.sh

@@ -12,10 +12,19 @@ script_dir=$(cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd)
 et_root_dir=$(cd ${script_dir}/../../.. && pwd)
 cd "${et_root_dir}"
 pwd
+setup_path_script=${et_root_dir}/examples/arm/ethos-u-scratch/setup_path.sh
+_setup_msg="please refer to ${et_root_dir}/examples/arm/setup.sh to properly install necessary tools."
 
 
 TEST_SUITE=$1
 
+# Source the tools
+# This should be prepared by the setup.sh
+[[ -f ${setup_path_script} ]] \
+    || { echo "Missing ${setup_path_script}. ${_setup_msg}"; exit 1; }
+
+source ${setup_path_script}
+
 help() {
     echo "Usage:"
     echo " $0 <TESTNAME>"
@@ -66,7 +75,6 @@ test_pytest() { # Test ops and other things
     ./examples/models/llama3_2_vision/install_requirements.sh
 
     cd "${et_root_dir}"
-    source examples/arm/ethos-u-scratch/setup_path.sh
     backends/arm/scripts/build_quantized_ops_aot_lib.sh
 
     # Run arm baremetal pytest tests without FVP
@@ -78,7 +86,6 @@ test_pytest_ethosu_fvp() { # Same as test_pytest but also sometime verify using
     echo "${TEST_SUITE_NAME}: Run pytest with fvp"
 
     ./examples/models/llama3_2_vision/install_requirements.sh
-    source examples/arm/ethos-u-scratch/setup_path.sh
 
     # Prepare Corstone-3x0 FVP for pytest
     examples/arm/run.sh --model_name=add --build_only
@@ -92,8 +99,6 @@ test_pytest_ethosu_fvp() { # Same as test_pytest but also sometime verify using
 test_run_ethosu_fvp() { # End to End model tests using run.sh
     echo "${TEST_SUITE_NAME}: Test ethos-u delegate examples with run.sh"
 
-    source examples/arm/ethos-u-scratch/setup_path.sh
-
     # TOSA quantized
     echo "${TEST_SUITE_NAME}: Test ethos-u target TOSA"
     examples/arm/run.sh --et_build_root=arm_test/test_run --target=TOSA --model_name=add
@@ -114,8 +119,6 @@ test_run_ethosu_fvp() { # End to End model tests using run.sh
 test_models_ethosu_fvp() { # End to End model tests using model_test.py
     echo "${TEST_SUITE_NAME}: Test ethos-u delegate models with test_model.py"
 
-    source examples/arm/ethos-u-scratch/setup_path.sh
-
     # Build common libs once
     python3 backends/arm/test/test_model.py --test_output=arm_test/test_model --build_libs