Facility-H5-use-uart-dma-idle.rar

Documentation and download available at https://www.FreeRTOS.org/ Changes between FreeRTOS V10.5.0 and FreeRTOS V10.5.1 released November 16 2022 + Updating the version in the manifest.yml file to be accurate. Changes between FreeRTOS V10.4.6 and FreeRTOS V10.5.0 released September 16 2022 + ARMv7-M and ARMv8-M MPU ports: It was possible for a third party that already independently gained the ability to execute injected code to read from or write to arbitrary addresses by passing a negative argument as the xIndex parameter to pvTaskGetThreadLocalStoragePointer() or vTaskSetThreadLocalStoragePointer respectively. A check has been added to ensure that passing a negative argument as the xIndex parameter does not cause arbitrary read or write. We thank Certibit Consulting, LLC for reporting this issue. + ARMv7-M and ARMv8-M MPU ports: It was possible for an unprivileged task to invoke any function with privilege by passing it as a parameter to MPU_xTaskCreate, MPU_xTaskCreateStatic, MPU_xTimerCreate, MPU_xTimerCreateStatic, or MPU_xTimerPendFunctionCall. MPU_xTaskCreate and MPU_xTaskCreateStatic have been updated to only allow creation of unprivileged tasks. MPU_xTimerCreate, MPU_xTimerCreateStatic and MPU_xTimerPendFunctionCall APIs have been removed. We thank Huazhong University of Science and Technology for reporting this issue. + ARMv7-M and ARMv8-M MPU ports: It was possible for a third party that already independently gained the ability to execute injected code to achieve further privilege escalation by branching directly inside a FreeRTOS MPU API wrapper function with a manually crafted stack frame. The local stack variable `xRunningPrivileged` has been removed so that a manually crafted stack frame cannot be used for privilege escalation by branching directly inside a FreeRTOS MPU API wrapper. We thank Certibit Consulting, LLC, Huazhong University of Science and Technology and the SecLab team at Northeastern University for reporting this issue. + ARMv7-M MPU ports: It was possible to configure overlapping memory protection unit (MPU) regions such that an unprivileged task could access privileged data. The kernel now uses highest numbered MPU regions for kernel protections to prevent such MPU configurations. We thank the SecLab team at Northeastern University for reporting this issue. + Add support for ARM Cortex-M55. + Add support for ARM Cortex-M85. Contributed by @gbrtth. + Add vectored mode interrupt support to the RISC-V port. + Add support for RV32E extension (Embedded Profile) in RISC-V GCC port. Contributed by @Limoto. + Heap improvements: - Add a check to heap_2 to track if a memory block is allocated to the application or not. The MSB of the size field is used for this purpose. The same check already exists in heap_4 and heap_5. This check prevents double free errors. - Add a new flag configHEAP_CLEAR_MEMORY_ON_FREE to heap_2, heap_4 and heap_5. If the flag is set in FreeRTOSConfig.h then memory freed using vPortFree() is automatically cleared to zero. - Add a new API pvPortCalloc to heap_2, heap_4 and heap_5 which has the same signature as the standard library calloc function. - Update the pointer types to portPOINTER_SIZE_TYPE. Contributed by @Octaviarius. + Add the ability to override send and receive completed callbacks for each instance of a stream buffer or message buffer. Earlier there could be one send and one receive callback for all instances of stream and message buffers. Having separate callbacks per instance allows different message and stream buffers to be used differently - for example, some for inter core communication and others for same core communication. The feature can be controlled by setting the configuration option configUSE_SB_COMPLETED_CALLBACK in FreeRTOSConfig.h. When the option is set to 1, APIs xStreamBufferCreateWithCallback() or xStreamBufferCreateStaticWithCallback() (and likewise APIs for message buffer) can be used to create a stream buffer or message buffer instance with application provided callback overrides. When the option is set to 0, then the default callbacks as defined by sbSEND_COMPLETED() and sbRECEIVE_COMPLETED() macros are invoked. To maintain backwards compatibility, configUSE_SB_COMPLETED_CALLBACK defaults to 0. The functionality is currently not supported for MPU enabled ports. + Generalize the FreeRTOS's Thread Local Storage (TLS) support so that it is not tied to newlib and can be used with other c-runtime libraries also. The default behavior for newlib support is kept same for backward compatibility. + Add support to build and link FreeRTOS using CMake build system. Contributed by @yhsb2k. + Add support to generate Software Bill of Materials (SBOM) for every release. + Add support for 16 MPU regions to the GCC Cortex-M33 ports. + Add ARM Cortex-M7 r0p0/r0p1 Errata 837070 workaround to ARM CM4 MPU ports. The application writer needs to define configENABLE_ERRATA_837070_WORKAROUND when using CM4 MPU ports on a Cortex-M7 r0p0/r0p1 core. + Add configSYSTICK_CLOCK_HZ to Cortex-M0 ports. This is needed to support the case when the SysTick timer is not clocked from the same source as the CPU. + Add hardware stack protection support to MicroBlazeV9 port. This ensures that the CPU immediately raises Stack Protection Violation exception as soon as any task violates its stack limits. Contributed by @uecasm. + Introduce the configUSE_MINI_LIST_ITEM configuration option. When this option is set to 1, ListItem_t and MiniLitItem_t remain separate types. However, when configUSE_MINI_LIST_ITEM == 0, MiniLitItem_t and ListItem_t are both typedefs of the same struct xLIST_ITEM. This addresses some issues observed when strict-aliasing and link time optimization are enabled. To maintain backwards compatibility, configUSE_MINI_LIST_ITEM defaults to 1. + Simplify prvInitialiseNewTask to memset newly allocated TCB structures to zero, and remove code that set individual structure members to zero. + Add prototype for prvPortYieldFromISR to the POSIX port so that it builds without any warning with -Wmissing-prototypes compiler option. + Add top of stack and end of stack to the task info report obtained using vTaskGetInfo(). Contributed by @shreyasbharath. + Add a cap to the cRxLock and cTxLock members of the queue data structure. These locks count the number items received and sent to the queue while the queue was locked. These are later used to unblock tasks waiting on the queue when the queue is unlocked. This PR caps the values of the cRxLock and cTxLock to the number of tasks in the system because we cannot unblock more tasks than there are in the system. Note that the same assert could still be triggered is the application creates more than 127 tasks. + Changed uxAutoReload parameter in timer functions to xAutoReload. The type is now BaseType_t. This matches the type of pdTRUE and pdFALSE. The new function xTimerGetAutoReload() provides the auto-reload state as a BaseType_t. The legacy function uxTimerGetAutoReload is retained with the original UBaseType_t return value. + Fix support for user implementations of tickless idle that call vTaskStepTick() with xExpectedIdleTime ticks to step. The new code ensures xTickCount reaches xNextTaskUnblockTime inside xTaskIncrementTick() instead of inside vTaskStepTick(). This fixes the typical case where a task wakes up one tick late and a rare case assertion failure when xTickCount\ rolls over. Contributed by @jefftenney. + Fix deadlock in event groups when pvPortMalloc and vPortFree functions are protected with a mutex. Contributed by @