Rahul Kar [Mon, 22 Jul 2024 15:35:17 +0000 (21:05 +0530)]
Update ARM_CRx_No_GIC port (#1101)
This PR makes the following improvements to the ARM_CRx_No_GIC port-
1. Remove inline assembly and move all the assembly code to the portASM.S
file.
2. Add support for configUSE_TASK_FPU_SUPPORT -
- When configUSE_TASK_FPU_SUPPORT is defined to 1, tasks are created
without floating point context. Tasks that want to use floating point, need
to call portTASK_USES_FLOATING_POINT(). This is the current behavior.
- When configUSE_TASK_FPU_SUPPORT is defined to 2, each task is created
with a floating point context.
If left undefined, configUSE_TASK_FPU_SUPPORT defaults to 1 for backward compatibility.
3. The application writer can now implement vApplicationSVCHandler to handle the
SVC calls raised within the application. SVC 0 is used for the yield kernel operation
and the application can use all the SVC calls other than 0.
Ahmed Ismail [Wed, 19 Jun 2024 15:12:50 +0000 (16:12 +0100)]
FreeRTOS MPU: Add Privileged eXecute Never MPU attribute support (#1092)
FreeRTOS MPU: Add privileged execute never MPU attribute
A new MPU region attribute Privileged eXecute Never (PXN)
is introduced in Armv8.1-M architecture, where if an MPU
region has PXN attribute set and the processor attempts
to execute the code inside with privileged level,
the Memory Management Fault exception would be triggered,
with IACCVIOL bit in MemManage Fault State Register set
to 1. The PXN feature allows privileged software to ensure
specific application tasks (threads) to execute in
unprivileged level only.
Signed-off-by: Ahmed Ismail <Ahmed.Ismail@arm.com>
chinglee-iot [Wed, 19 Jun 2024 10:29:04 +0000 (18:29 +0800)]
Remove run state assertion in prvCheckForRunStateChange (#1093)
In `prvCheckForRunStateChange()`, enabling interrupts should cause this core to immediately service the pending interrupt and yield. Upon the next scheduling of the task, the assertion `configASSERT(pxThisTCB->xTaskRunState != taskTASK_SCHEDULED_TO_YIELD);` may not be true, as other cores could have requested a yield for this task before it evaluates its run state within the assertion. To address this, the task re-evaluates its run state in critical section within a loop until it is eligible for execution, which is the current implementation. Consequently, this assertion should be removed to ensure correct behavior.
haydenridd [Tue, 11 Jun 2024 05:00:08 +0000 (22:00 -0700)]
- Changed macro __VFP_FP__ to __ARM_FP for ports GCC/ARM_CM7, GCC/ARM_CM4_MPU, and GCC/ARM_CM4F to accurately reflect if floating point hardware support is enabled (#1088)
This hook enables tracers to run code on startup after all RTOS
resources are created and to detect that the scheduler is starting without
relying on traceENTER/traceEXIT macros.
It also provides tracers access to the task handle of all IDLE tasks,
allowing them to be identified unambiguously and without relying on
INCLUDE_xTaskGetIdleTaskHandle.
maxiao [Mon, 10 Jun 2024 10:32:04 +0000 (18:32 +0800)]
Fix compilation warning about undelcared pthread_setname_np (#1079)
Use _GNU_SOURCE macro instead of __USE_GNU and define it before
including portmacro.h. The reason is that portmacro.h includes limits.h
which in-turn includes features.h - this results in __USE_GNU getting
incorrectly undefined.
Adds a note to the (confusingly named) xTaskNumber member of TaskStatus_t
explaining that the value is different to the TaskNumber that can be
accessed using the vTaskSetTaskNumber and vTaskGetTaskNumber functions.
The value returned is actually the value of uxTCBNumber in the TCB.
Gaurav-Aggarwal-AWS [Tue, 14 May 2024 10:45:54 +0000 (16:15 +0530)]
Fix race in prvProcessSimulatedInterrupts (#1055)
Earlier the code was suspending the current thread after calling
vTaskSwitchContext. This left a gap where the current thread could
access incorrect pxCurrentTCB after it was changed by
vTaskSwitchContext.
This commit addresses the problem by suspending the current thread
before calling vTaskSwitchContext.
It was reported here - https://github.com/FreeRTOS/FreeRTOS-Kernel/issues/1054.
StefanBalt [Wed, 8 May 2024 11:37:52 +0000 (13:37 +0200)]
Add configUSE_TASK_FPU_SUPPORT to AARCH64 port (#1048)
* Add configUSE_TASK_FPU_SUPPORT to AARCH64 port
NEON SIMD is required by standard AARCH64 and its registers are
frequently utilized by standard functions such as memcpy().
This means that even simple tasks that do not use any floating point
arithmetics may still alter the contents of the FPU registers.
For this reason it makes sense to add support for
configUSE_TASK_FPU_SUPPORT to be able to enforce FPU register saving and
restoring globally.
The implementation was largely adopted from the ARM_CA9 port. However,
the FPU registers must be placed on the stack before the critical
nesting count to match the AARCH64 portASM.S.
Fix wrong source file list in CMake of GCC_ARM_CM0 port. (#1045)
Add GCC/ARM_CM0/mpu_wrappers_v2_asm.c and GCC/ARM_CM0/portasm.c as source files to 'freertos_kernel_port' library.
This fixes the FREERTOS_PORT "GCC_ARM_CM0" CMake configuration.
Currently in Armv8-M GCC/ArmClang ports, constant pool is used to
define literals needed for `ldr` instructions. However, those
constant pools are defined with `.align 4` which increases code size.
Instead of defining the constant pool with `.align 4`, let the
compiler hanlde the constant pool and the required alignment.
The `portable/ThirdParty/GCC/ARM_TFM/README.md` and
`portable/ThirdParty/GCC/ARM_TFM/os_wrapper_freertos.c` are updated to
support `TF-Mv2.0.0` of trusted-firmware-m release.
The difference between a stream buffer and a stream batching buffer is when
a task performs read on a non-empty buffer:
- The task reading from a non-empty stream buffer returns immediately
regardless of the amount of data in the buffer.
- The task reading from a non-empty steam batching buffer blocks until the
amount of data in the buffer exceeds the trigger level or the block time
expires.
wat [Mon, 18 Mar 2024 06:09:49 +0000 (15:09 +0900)]
Improvement for 64bit Windows port (#1011)
* 64bit TickType_t is supported on Windows port.(MSVC and MinGW)
Especially it is introduced for 64bit compiler.(x64 platform on MSVC and MinGW-w64)
* Unnecessary compiler warning for the cast operation is disabled locally.(MinGW-w64 only)
* Modify the condition for ignoring compiler warning for the cast operation.
Before modification: Compiler warning was ignored only on MinGW64
After modification: Compiler warning is ignored on MinGW32 and MinGW64
Reason of modification: The cast warning here is unavoidable not only on MinGW64 but also on MinGW32.
"__GNUC__" macro is used because MSVC does not recognize this #pragma directive.
Add a compile time check that emits a helpful error message if the user
attempts to create a daemon task startup hook without also creating the
timer/daemon task.
The timer/daemon task startup hook runs in the context of the timer/daemon
task. Therefore, it won't run even if configUSE_DAEMON_TASK_STARTUP_HOOK
is set to 1 if the timer task isn't created. The timer task is only created if
configUSE_TIMERS is not equal to 0.
chinglee-iot [Wed, 6 Mar 2024 07:34:21 +0000 (15:34 +0800)]
Not using pxIndex to iterate ready list in trace utility (#1000)
* pxIndex should only be used when selecting next task. Altering pxIndex
of a ready list will cause the scheduler to be unable to select the
right task to run. Using a for loop if traversing the list for trace
utility is required.
* Not defining listGET_OWNER_OF_NEXT_ENTRY when using SMP scheduler
Aniruddha Kanhere [Tue, 20 Feb 2024 16:49:41 +0000 (08:49 -0800)]
Fix small bugs in Kernel (#998)
* Fix small bugs
* Cast sizeof to BaseType_t
* Test removing assert to fix UT
* Revert change to tasks.c
Since configIDLE_TASK_NAME must be defined as a string according to
the documentation, the macro will always be NULL terminated. Which
means that the check `if( cIdleName[ xIdleTaskNameIndex ] == ( char ) 0x00 )`
will catch the end of string.
* Update coverity config; Add coverity version; Update pvPortMalloc declaration to match the definitions.
* Add port files to sed command
* Remove warnings about unused parameters in port code
---------
Co-authored-by: Rahul Kar <118818625+kar-rahul-aws@users.noreply.github.com>
chinglee-iot [Mon, 19 Feb 2024 06:39:31 +0000 (14:39 +0800)]
Support reset kernel state for restarting scheduler (#944)
* Adding the following functions to reset kernel state. These functions are only required for application which
needs to restart the scheduler.
- void vTaskResetState( void )
- void vTimerResetState( void )
- void vPortHeapResetState( void )
- void vCoRoutineResetState( void )
---------
Signed-off-by: Gaurav Aggarwal <aggarg@amazon.com> Co-authored-by: Chris Morgan <cmorgan@boston-engineering.com> Co-authored-by: Soren Ptak <ptaksoren@gmail.com> Co-authored-by: Rahul Kar <118818625+kar-rahul-aws@users.noreply.github.com> Co-authored-by: Gaurav Aggarwal <aggarg@amazon.com> Co-authored-by: Gaurav-Aggarwal-AWS <33462878+aggarg@users.noreply.github.com>
Previously ulTaskGenericNotifyTake() and xTaskGenericNotifyWait() would suspend
the scheduler while inside a critical section.
This commit changes the order by wrapping the critical sections in a scheduler
suspension block. This logic is more inuitive and allows the SMP scheduler
suspension logic to be simplified.
* tasks.c: Fix typo
* Use a complete sentence in comment
* Check portGET_CRITICAL_NESTING_COUNT when scheduler is running
* Prevent potential NULL pointer access when scheduler is not running
---------
Co-authored-by: Paul Bartell <pbartell@amazon.com> Co-authored-by: chinglee-iot <61685396+chinglee-iot@users.noreply.github.com> Co-authored-by: Ching-Hsin Lee <chinglee@amazon.com>
chinglee-iot [Tue, 6 Feb 2024 12:41:34 +0000 (20:41 +0800)]
Fix SMP task self void run state change (#984)
* Request a task to yield after been suspended or deleted to prevent this task puts itself back to another list
* Fix volatile variable access order to ensure ensure compliance with MISRA C 2012 Rule 13.5
chinglee-iot [Thu, 1 Feb 2024 03:12:08 +0000 (11:12 +0800)]
Delete kernel created task in vTaskEndScheduler (#962)
* Update vTaskDelete() to delete a task directly when scheduler is stopped instead of putting it on the xTasksWaitingTermination list.
* Delete the idle tasks and timer task in vTaskEndScheduler().
* Reclaim resources for all the tasks on the xTasksWaitingTermination list in vTaskEndScheduler().
* Update POSIX to no longer delete FreeRTOS tasks in the port.
barnatahmed [Tue, 30 Jan 2024 19:44:27 +0000 (20:44 +0100)]
Cmake: Create a single static library including port
Modify portable/CMakeLists.txt to create only one static library containing both the common kernel code and kernel port.
Change the freertos_kernel_port target from a STATIC library to an OBJECT library and introduce a new freertos_kernel_port_headers INTERFACE library target.
Phillip Stevens [Tue, 30 Jan 2024 05:42:20 +0000 (16:42 +1100)]
Fix ThirdParty/GCC/ATmega formatting (#965)
Unnecessary white space was introduced in PR #768
which affected the formatting of assembly code. This PR
returns the correct formatting. No functional change.
Forty-Bot [Mon, 29 Jan 2024 05:37:43 +0000 (00:37 -0500)]
GCC: MSP430F449: Fix pxPortInitialiseStack on EABI (#947)
According to the MSP430 EABI [1] section 3.3,
Arguments are assigned, in declared order, to the first available
register single, pair, or quad from the following list into which it
fits (with the following special exceptions). For MSP430 and
MSP430X, the argument registers are: R12, R13, R14, R15
Therefore, pvParameters should be passed in R12, as it is the first
argument, not R15. Keep passing the parameter in R15 for the
MSP430 EABI, if anyone is still using it.
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