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Update History for Version 10.6.0 (#706)
Signed-off-by: kar-rahul-aws <karahulx@amazon.com>
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History.txt
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History.txt
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Documentation and download available at https://www.FreeRTOS.org/
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Documentation and download available at https://www.FreeRTOS.org/
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Changes between FreeRTOS V10.5.1 and FreeRTOS 10.6.0 released July 13, 2023
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+ Add a new MPU wrapper that places additional restrictions on unprivileged
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tasks. The following is the list of changes introduced with the new MPU
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wrapper:
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1. Opaque and indirectly verifiable integers for kernel object handles:
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All the kernel object handles (for example, queue handles) are now
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opaque integers. Previously object handles were raw pointers.
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2. Save the task context in Task Control Block (TCB): When a task is
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swapped out by the scheduler, the task's context is now saved in its
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TCB. Previously the task's context was saved on its stack.
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3. Execute system calls on a separate privileged only stack: FreeRTOS
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system calls, which execute with elevated privilege, now use a
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separate privileged only stack. Previously system calls used the
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calling task's stack. The application writer can control the size of
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the system call stack using new configSYSTEM_CALL_STACK_SIZE config
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macro.
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4. Memory bounds checks: FreeRTOS system calls which accept a pointer
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and de-reference it, now verify that the calling task has required
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permissions to access the memory location referenced by the pointer.
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5. System calls restrictions: The following system calls are no longer
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available to unprivileged tasks:
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- vQueueDelete
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- xQueueCreateMutex
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- xQueueCreateMutexStatic
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- xQueueCreateCountingSemaphore
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- xQueueCreateCountingSemaphoreStatic
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- xQueueGenericCreate
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- xQueueGenericCreateStatic
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- xQueueCreateSet
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- xQueueRemoveFromSet
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- xQueueGenericReset
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- xTaskCreate
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- xTaskCreateStatic
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- vTaskDelete
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- vTaskPrioritySet
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- vTaskSuspendAll
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- xTaskResumeAll
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- xTaskGetHandle
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- xTaskCallApplicationTaskHook
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- vTaskList
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- vTaskGetRunTimeStats
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- xTaskCatchUpTicks
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- xEventGroupCreate
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- xEventGroupCreateStatic
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- vEventGroupDelete
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- xStreamBufferGenericCreate
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- xStreamBufferGenericCreateStatic
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- vStreamBufferDelete
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- xStreamBufferReset
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Also, an unprivileged task can no longer use vTaskSuspend to suspend
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any task other than itself.
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We thank the following people for their inputs in these enhancements:
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- David Reiss of Meta Platforms, Inc.
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- Lan Luo, Xinhui Shao, Yumeng Wei, Zixia Liu, Huaiyu Yan and Zhen Ling
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of School of Computer Science and Engineering, Southeast University,
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China.
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- Xinwen Fu of Department of Computer Science, University of
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Massachusetts Lowell, USA.
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- Yuequi Chen, Zicheng Wang, Minghao Lin of University of Colorado
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Boulder, USA.
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+ Add Cortex-M35P port. Contributed by @urutva.
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+ Add embedded extension (RV32E) support to the IAR RISC-V port.
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+ Add ulTaskGetRunTimeCounter and ulTaskGetRunTimePercent APIs. Contributed by
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@chrisnc.
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+ Add APIs to get the application supplied buffers from statically
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created kernel objects. The following new APIs are added:
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- xTaskGetStaticBuffers
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- xQueueGetStaticBuffers
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- xQueueGenericGetStaticBuffers
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- xSemaphoreGetStaticBuffer
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- xEventGroupGetStaticBuffer
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- xStreamBufferGetStaticBuffers
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- xMessageBufferGetStaticBuffers
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These APIs enable the application writer to obtain static buffers from
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the kernel object and free/reuse them at the time of deletion. Earlier
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the application writer had to maintain the association of static buffers
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and the kernel object in the application. Contributed by @Dazza0.
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+ Add Thread Local Storage (TLS) support using picolibc function. Contributed
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by @keith-packard.
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+ Add configTICK_TYPE_WIDTH_IN_BITS to configure TickType_t data type. As a result,
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the number of bits in an event group also increases with big data type. Contributed
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by @Hadatko.
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+ Update eTaskGetState and uxTaskGetSystemState to return eReady for pending ready
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tasks. Contributed by @Dazza0.
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+ Update heap_4 and heap_5 to add padding only if the resulting block is not
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already aligned.
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+ Fix the scheduler logic in a couple of places to not preempt a task when an
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equal priority task becomes ready.
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+ Add macros used in FreeRTOS-Plus libraries. Contributed by @Holden.
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+ Fix clang compiler warnings. Contributed by @phelter.
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+ Add assertions to ARMv8-M ports to detect when FreeRTOS APIs are called from
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interrupts with priority higher than the configMAX_SYSCALL_INTERRUPT_PRIORITY.
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Contributed by @urutva.
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+ Add xPortIsInsideInterrupt API to ARM_CM0 ports.
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+ Fix build warning in MSP430X port when large data model is used.
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+ Add the ability to use Cortex-R5 port on the parts without FPU.
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+ Fix build warning in heap implementations on PIC24/dsPIC.
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+ Update interrupt priority asserts for Cortex-M ports so that these do not fire
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on QEMU which does not implement PRIO bits.
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+ Update ARMv7-M ports to ensure that kernel interrupts run at the lowest priority.
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configKERNEL_INTERRUPT_PRIORITY is now obsolete for ARMv7-M ports and brings
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these ports inline with the newer ARMv8-M ports. Contributed by @chrisnc.
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+ Fix build issue in POSIX GCC port on Windows Subsystem for Linux (WSL). Contributed
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by @jacky309.
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+ Add portMEMORY_BARRIER to Microblaze port. Contributed by @bbain.
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+ Add portPOINTER_SIZE_TYPE definition for ATmega port. Contributed by @jputcu.
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+ Multiple improvements in the CMake support. Contributed by @phelte and @cookpate.
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Changes between FreeRTOS V10.5.0 and FreeRTOS V10.5.1 released November 16 2022
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Changes between FreeRTOS V10.5.0 and FreeRTOS V10.5.1 released November 16 2022
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+ Updated the kernel version in manifest and SBOM
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+ Updated the kernel version in manifest and SBOM
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