Arm backend: Auto-configure Arm backend runner builds via presets

- Auto-derive arm_executor_runner build directories when --build-dir is
  omitted and configure them with the arm_baremetal preset.
- Add validation helpers that ensure standalone builds were configured
  with the right targets, toolchains, and BundledIO/devtools toggles.
- Teach the script to stage PTEs, reuse multi-config build trees, and
  drive FVP/BundleIO workflows from a single entry point.

Change-Id: If52327a1bc512c87fd2ce5d9ce89c352919fd447
Signed-off-by: Usamah Zaheer <usamah.zaheer@arm.com>

Author: usamahz

backends/arm/scripts/run_fvp.sh

@@ -151,7 +151,7 @@ elif [[ ${target} == *"ethos-u55"*  ]]; then
         -C mps3_board.telnetterminal0.start_telnet=0        \
         -C mps3_board.uart0.out_file='-'                    \
         -C mps3_board.uart0.shutdown_on_eot=1               \
-        "${extra_args_u55[@]}"                              \
+        ${extra_args_u55[@]+"${extra_args_u55[@]}"}         \
         -a "${elf_file}"                                    \
         ${data_file}                                        \
         --timelimit ${timeout} 2>&1 | sed 's/\r$//' | tee ${log_file} || true # seconds
@@ -164,7 +164,7 @@ 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[@]}"                              \
+        ${extra_args_u85[@]+"${extra_args_u85[@]}"}         \
         -a "${elf_file}"                                    \
         ${data_file}                                        \
         --timelimit ${timeout} 2>&1 | sed 's/\r$//' | tee ${log_file} || true # seconds

backends/arm/test/test_arm_baremetal.sh

@@ -256,14 +256,17 @@ test_pytest_models_vkml() {
 test_run_vkml() {
     echo "${TEST_SUITE_NAME}: Test VKML delegate examples with run.sh"
 
+    source backends/arm/test/setup_testing_vkml.sh
+
     echo "${TEST_SUITE_NAME}: Test VKML"
     out_folder="arm_test/test_run"
+    vkml_build_dir="${build_root_test_dir}"
 
-    examples/arm/run.sh --et_build_root=${out_folder} --target=vgf --model_name=add --output=${out_folder}/runner
-    examples/arm/run.sh --et_build_root=${out_folder} --target=vgf --model_name=mul --output=${out_folder}/runner
+    examples/arm/run.sh --build-dir="${vkml_build_dir}" --et_build_root=${out_folder} --target=vgf --model_name=add --output=${out_folder}/runner
+    examples/arm/run.sh --build-dir="${vkml_build_dir}" --et_build_root=${out_folder} --target=vgf --model_name=mul --output=${out_folder}/runner
 
-    examples/arm/run.sh --et_build_root=${out_folder} --target=vgf --model_name=qadd --output=${out_folder}/runner
-    examples/arm/run.sh --et_build_root=${out_folder} --target=vgf --model_name=qops --output=${out_folder}/runner
+    examples/arm/run.sh --build-dir="${vkml_build_dir}" --et_build_root=${out_folder} --target=vgf --model_name=qadd --output=${out_folder}/runner
+    examples/arm/run.sh --build-dir="${vkml_build_dir}" --et_build_root=${out_folder} --target=vgf --model_name=qops --output=${out_folder}/runner
 
     echo "${TEST_SUITE_NAME}: PASS"
 }