feat(uart): Add sdkconfig.ci.iram_safe test for UART driver

components/driver/test_apps/uart/CMakeLists.txt

@@ -8,3 +8,16 @@ set(EXTRA_COMPONENT_DIRS "$ENV{IDF_PATH}/tools/unit-test-app/components")
 
 include($ENV{IDF_PATH}/tools/cmake/project.cmake)
 project(uart_test)
+
+if(CONFIG_COMPILER_DUMP_RTL_FILES)
+    add_custom_target(check_test_app_sections ALL
+                      COMMAND ${PYTHON} $ENV{IDF_PATH}/tools/ci/check_callgraph.py
+                      --rtl-dirs ${CMAKE_BINARY_DIR}/esp-idf/driver/,${CMAKE_BINARY_DIR}/esp-idf/hal/
+                      --elf-file ${CMAKE_BINARY_DIR}/uart_test.elf
+                      find-refs
+                      --from-sections=.iram0.text
+                      --to-sections=.flash.text,.flash.rodata
+                      --exit-code
+                      DEPENDS ${elf}
+                      )
+endif()

components/driver/test_apps/uart/pytest_uart.py

@@ -1,4 +1,4 @@
-# SPDX-FileCopyrightText: 2021-2022 Espressif Systems (Shanghai) CO LTD
+# SPDX-FileCopyrightText: 2021-2023 Espressif Systems (Shanghai) CO LTD
 # SPDX-License-Identifier: CC0-1.0
 
 import pytest
@@ -6,6 +6,13 @@ import pytest
 
 @pytest.mark.supported_targets
 @pytest.mark.generic
-@pytest.mark.parametrize('config', ['release',], indirect=True,)
+@pytest.mark.parametrize(
+    'config',
+    [
+        'iram_safe',
+        'release',
+    ],
+    indirect=True,
+)
 def test_uart_single_dev(case_tester) -> None:                # type: ignore
     case_tester.run_all_normal_cases(reset=True)

components/driver/test_apps/uart/sdkconfig.ci.iram_safe

@@ -0,0 +1,8 @@
+CONFIG_COMPILER_DUMP_RTL_FILES=y
+CONFIG_UART_ISR_IN_IRAM=y
+CONFIG_COMPILER_OPTIMIZATION_NONE=y
+# place non-ISR FreeRTOS functions in Flash
+CONFIG_FREERTOS_PLACE_FUNCTIONS_INTO_FLASH=y
+# silent the error check, as the error string are stored in rodata, causing RTL check failure
+CONFIG_COMPILER_OPTIMIZATION_CHECKS_SILENT=y
+CONFIG_COMPILER_OPTIMIZATION_ASSERTIONS_SILENT=y

components/driver/test_apps/uart/sdkconfig.defaults

@@ -1,2 +1,2 @@
 CONFIG_FREERTOS_HZ=1000
-CONFIG_ESP_TASK_WDT=n
+CONFIG_ESP_TASK_WDT_INIT=n