freertos: optionally place selected freertos functions into flash memory instead of IRAM

correct generation.py script to be silent when file: function is not in the object list (just ignore placement)
correct linker.lf to place task functions into flash if CONFIG_FREERTOS_TASK_FUNCTIONS_INTO_FLASH is active otherwise into IRAM
update kconfig option to place functions into IRAM
update linker file after tests
fix spi_device_polling_end crash when xTaskGetTickCount() in flash
disable "yield from lower priority task, other CPU" test case when placing rtos functions into flash
upadate ut app config freertos_flash
combine spi_flash driver and freertos ut configs into one file
remove TEST_EXCLUDE_COMPONENTS
ci: fix ut job
remove functions that are called from ISR funcs
add port module functions to place into Flash
place snapshot funcs into Flash when ESP_PANIC_HANDLER_IRAM is not set
ci: add job with tags UT_T1_GPIO,ESP32_IDF

components/freertos/Kconfig

@@ -417,6 +417,13 @@ menu "FreeRTOS"
             would be checked to be in compliance with Vanilla FreeRTOS.
             e.g Calling port*_CRITICAL from ISR context would cause assert failure
 
+    config FREERTOS_PLACE_FUNCTIONS_INTO_FLASH
+        bool "Place FreeRTOS functions into Flash"
+        default n
+        help
+            When enabled the selected Non-ISR FreeRTOS functions will be placed into Flash memory instead of IRAM.
+            This saves up to 8KB of IRAM depending on which functions are used.
+
     config FREERTOS_DEBUG_OCDAWARE
         bool
         help

components/freertos/linker.lf

@@ -3,4 +3,112 @@ archive: libfreertos.a
 entries:
     * (noflash_text)
     queue:xQueueGenericCreateStatic (default)
-
+    if FREERTOS_PLACE_FUNCTIONS_INTO_FLASH = y:
+        port: pxPortInitialiseStack (default)
+        port: xPortStartScheduler (default)
+        port: vPortStoreTaskMPUSettings (default)
+        port: vPortReleaseTaskMPUSettings (default)
+        if ESP_PANIC_HANDLER_IRAM != y:
+            tasks: uxTaskGetSnapshotAll (default)
+            tasks: prvTaskGetSnapshot (default)
+            tasks: prvTaskGetSnapshotsFromList (default)
+        tasks: prvTaskCheckFreeStackSpace (default)
+        tasks: prvListTaskWithinSingleList (default)
+        tasks: prvInitialiseNewTask (default)
+        tasks: prvInitialiseTaskLists (default)
+        tasks: prvDeleteTCB (default)
+        tasks: prvCheckTasksWaitingTermination (default)
+        tasks: prvAddCurrentTaskToDelayedList (default)
+        tasks: prvIdleTask (default)
+        tasks: prvAddNewTaskToReadyList (default)
+        tasks: xTaskCreateStaticPinnedToCore (default)
+        tasks: xTaskCreatePinnedToCore (default)
+        tasks: vTaskResume (default)
+        tasks: vTaskStartScheduler (default)
+        tasks: vTaskSuspendAll (default)
+        tasks: uxTaskGetNumberOfTasks (default)
+        tasks: uxTaskGetSystemState (default)
+        tasks: xTaskGetIdleTaskHandle (default)
+        tasks: xTaskRemoveFromUnorderedEventList (default)
+        tasks: uxTaskGetTaskNumber (default)
+        tasks: vTaskSetTaskNumber (default)
+        tasks: uxTaskPriorityGet (default)
+        tasks: vTaskPrioritySet (default)
+        tasks: vTaskSetThreadLocalStoragePointerAndDelCallback (default)
+        tasks: pvTaskGetThreadLocalStoragePointer (default)
+        tasks: xTaskGetCurrentTaskHandleForCPU (default)
+        tasks: vTaskDelete (default)
+        tasks: vTaskDelayUntil (default)
+        tasks: vTaskDelay (default)
+        tasks: vTaskSuspend (default)
+        tasks: xTaskResumeAll (default)
+        tasks: uxTaskResetEventItemValue (default)
+        tasks: ulTaskNotifyTake (default)
+        tasks: xTaskNotifyWait (default)
+        tasks: xTaskNotify (default)
+        tasks: eTaskGetState (default)
+        tasks: pxTaskGetStackStart (default)
+        tasks: uxTaskGetStackHighWaterMark (default)
+        tasks: vTaskAllocateMPURegions (default)
+        tasks: vTaskEndScheduler (default)
+        tasks: vTaskList (default)
+        tasks: vTaskMissedYield (default)
+        tasks: vTaskSetThreadLocalStoragePointer (default)
+        tasks: xTaskCreateRestricted (default)
+        tasks: xTaskGetAffinity (default)
+        tasks: xTaskGetIdleTaskHandleForCPU (default)
+        timers: prvInsertTimerInActiveList (default)
+        timers: prvCheckForValidListAndQueue (default)
+        timers: prvInitialiseNewTimer (default)
+        timers: prvTimerTask (default)
+        timers: prvSwitchTimerLists (default)
+        timers: prvSampleTimeNow (default)
+        timers: prvProcessExpiredTimer (default)
+        timers: prvProcessTimerOrBlockTask (default)
+        timers: prvProcessReceivedCommands (default)
+        timers: xTimerCreateTimerTask (default)
+        timers: xTimerCreate (default)
+        timers: xTimerCreateStatic (default)
+        timers: xTimerGenericCommand (default)
+        timers: xTimerGetPeriod (default)
+        timers: xTimerGetExpiryTime (default)
+        timers: xTimerIsTimerActive (default)
+        timers: pvTimerGetTimerID (default)
+        timers: vTimerSetTimerID (default)
+        timers: prvGetNextExpireTime (default)
+        event_groups: prvTestWaitCondition (default)
+        event_groups: xEventGroupCreateStatic (default)
+        event_groups: xEventGroupCreate (default)
+        event_groups: xEventGroupWaitBits (default)
+        event_groups: xEventGroupClearBits (default)
+        event_groups: xEventGroupSetBits (default)
+        event_groups: xEventGroupSync (default)
+        event_groups: vEventGroupDelete (default)
+        queue: prvIsQueueEmpty (default)
+        queue: prvIsQueueFull (default)
+        queue: prvInitialiseNewQueue (default)
+        queue: prvInitialiseMutex (default)
+        queue: uxQueueSpacesAvailable (default)
+        queue: xQueueGenericReset (default)
+        queue: xQueueGenericCreate (default)
+        queue: xQueueGetMutexHolder (default)
+        queue: xQueueCreateCountingSemaphoreStatic (default)
+        queue: xQueueCreateCountingSemaphore (default)
+        queue: xQueueGenericSend (default)
+        queue: xQueueCreateMutex (default)
+        queue: xQueueCreateMutexStatic (default)
+        queue: xQueueGiveMutexRecursive (default)
+        queue: xQueueTakeMutexRecursive (default)
+        queue: uxQueueMessagesWaiting (default)
+        queue: uxQueueGetQueueNumber (default)
+        queue: vQueueSetQueueNumber (default)
+        queue: ucQueueGetQueueType (default)
+        queue: vQueueAddToRegistry (default)
+        queue: pcQueueGetName (default)
+        queue: vQueueUnregisterQueue (default)
+        queue: vQueueDelete (default)
+        queue: vQueueWaitForMessageRestricted (default)
+        queue: xQueueCreateSet (default)
+        queue: xQueueAddToSet (default)
+        queue: xQueueRemoveFromSet (default)
+        queue: xQueueSelectFromSet (default)

components/freertos/test/test_preemption.c

@@ -13,6 +13,7 @@
 #include "unity.h"
 #include "soc/cpu.h"
 #include "test_utils.h"
+#include "sdkconfig.h"
 
 static volatile bool trigger;
 static volatile bool flag;
@@ -72,7 +73,7 @@ TEST_CASE("Yield from lower priority task, same CPU", "[freertos]")
 }
 
 
-#if portNUM_PROCESSORS == 2
+#if (portNUM_PROCESSORS == 2) && !CONFIG_FREERTOS_TASK_FUNCTIONS_INTO_FLASH
 TEST_CASE("Yield from lower priority task, other CPU", "[freertos]")
 {
     uint32_t trigger_ccount, yield_ccount, now_ccount, delta;
@@ -107,4 +108,4 @@ TEST_CASE("Yield from lower priority task, other CPU", "[freertos]")
         vTaskDelete(sender_task);
     }
 }
-#endif // portNUM_PROCESSORS == 2
+#endif

tools/ci/config/target-test.yml

@@ -398,7 +398,7 @@ test_app_test_003:
 
 UT_001:
   extends: .unit_test_template
-  parallel: 39
+  parallel: 43
   tags:
     - ESP32_IDF
     - UT_T1_1
@@ -407,7 +407,7 @@ UT_001:
 
 UT_002:
   extends: .unit_test_template
-  parallel: 15
+  parallel: 12
   tags:
     - ESP32_IDF
     - UT_T1_1
@@ -481,7 +481,7 @@ UT_017:
 
 UT_018:
   extends: .unit_test_template
-  parallel: 5
+  parallel: 2
   tags:
     - ESP32_IDF
     - UT_T1_1
@@ -537,6 +537,7 @@ UT_033:
 
 UT_034:
   extends: .unit_test_template
+  parallel: 2
   tags:
     - ESP32_IDF
     - UT_T1_ESP_FLASH
@@ -560,7 +561,7 @@ UT_034:
 
 UT_035:
   extends: .unit_test_s2_template
-  parallel: 38
+  parallel: 41
   tags:
     - ESP32S2_IDF
     - UT_T1_1
@@ -612,7 +613,12 @@ UT_045:
     - ESP32_IDF
     - UT_SDIO
     - psram
-
+    
+UT_046:
+  extends: .unit_test_template
+  tags:
+    - ESP32_IDF
+    - UT_T1_GPIO
 
 nvs_compatible_test:
   extends: .test_template

tools/ldgen/generation.py

@@ -80,8 +80,7 @@ class PlacementRule():
         def do_section_expansion(rule, section):
             if section in rule.get_section_names():
                 sections_in_obj = sections_infos.get_obj_sections(rule.archive, rule.obj)
-
-                expansions = fnmatch.filter(sections_in_obj, section)
+                expansions = [n for n in sections_in_obj or [] if fnmatch.fnmatch(n, section)]
                 return expansions
 
         def remove_section_expansions(rule, section, expansions):

tools/unit-test-app/configs/freertos_flash

@@ -0,0 +1,2 @@
+TEST_COMPONENTS=freertos driver spi_flash 
+CONFIG_FREERTOS_TASK_FUNCTIONS_INTO_FLASH=y