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diff --git a/c-user/config/classic-init-task.rst b/c-user/config/classic-init-task.rst new file mode 100644 index 0000000..f65bb8a --- /dev/null +++ b/c-user/config/classic-init-task.rst @@ -0,0 +1,416 @@ +.. SPDX-License-Identifier: CC-BY-SA-4.0 + +.. Copyright (C) 2020, 2021 embedded brains GmbH & Co. KG +.. Copyright (C) 1988, 2008 On-Line Applications Research Corporation (OAR) + +.. This file is part of the RTEMS quality process and was automatically +.. generated. If you find something that needs to be fixed or +.. worded better please post a report or patch to an RTEMS mailing list +.. or raise a bug report: +.. +.. https://www.rtems.org/bugs.html +.. +.. For information on updating and regenerating please refer to the How-To +.. section in the Software Requirements Engineering chapter of the +.. RTEMS Software Engineering manual. The manual is provided as a part of +.. a release. For development sources please refer to the online +.. documentation at: +.. +.. https://docs.rtems.org + +.. Generated from spec:/acfg/if/group-classicinit + +Classic API Initialization Task Configuration +============================================= + +This section describes configuration options related to the Classic API +initialization task. + +.. Generated from spec:/acfg/if/init-task-arguments + +.. raw:: latex + + \clearpage + +.. index:: CONFIGURE_INIT_TASK_ARGUMENTS + +.. _CONFIGURE_INIT_TASK_ARGUMENTS: + +CONFIGURE_INIT_TASK_ARGUMENTS +----------------------------- + +.. rubric:: CONSTANT: + +``CONFIGURE_INIT_TASK_ARGUMENTS`` + +.. rubric:: OPTION TYPE: + +This configuration option is an integer define. + +.. rubric:: DEFAULT VALUE: + +The default value is 0. + +.. rubric:: DESCRIPTION: + +The value of this configuration option defines task argument of the Classic +API initialization task. + +.. rubric:: CONSTRAINTS: + +The value of the configuration option shall be convertible to an integer of +type :ref:`InterfaceRtemsTaskArgument`. + +.. Generated from spec:/acfg/if/init-task-attributes + +.. raw:: latex + + \clearpage + +.. index:: CONFIGURE_INIT_TASK_ATTRIBUTES + +.. _CONFIGURE_INIT_TASK_ATTRIBUTES: + +CONFIGURE_INIT_TASK_ATTRIBUTES +------------------------------ + +.. rubric:: CONSTANT: + +``CONFIGURE_INIT_TASK_ATTRIBUTES`` + +.. rubric:: OPTION TYPE: + +This configuration option is an integer define. + +.. rubric:: DEFAULT VALUE: + +The default value is :c:macro:`RTEMS_DEFAULT_ATTRIBUTES`. + +.. rubric:: DESCRIPTION: + +The value of this configuration option defines the task attributes of the +Classic API initialization task. + +.. rubric:: CONSTRAINTS: + +The value of the configuration option shall be a valid task attribute set. + +.. Generated from spec:/acfg/if/init-task-construct-storage-size + +.. raw:: latex + + \clearpage + +.. index:: CONFIGURE_INIT_TASK_CONSTRUCT_STORAGE_SIZE + +.. _CONFIGURE_INIT_TASK_CONSTRUCT_STORAGE_SIZE: + +CONFIGURE_INIT_TASK_CONSTRUCT_STORAGE_SIZE +------------------------------------------ + +.. rubric:: CONSTANT: + +``CONFIGURE_INIT_TASK_CONSTRUCT_STORAGE_SIZE`` + +.. rubric:: OPTION TYPE: + +This configuration option is an integer define. + +.. rubric:: DEFAULT VALUE: + +This configuration option has no default value. If it is not specified, then +the Classic API initialization task will be created with the stack size +defined by the :ref:`CONFIGURE_INIT_TASK_STACK_SIZE` configuration option. + +.. rubric:: DESCRIPTION: + +The value of this configuration option defines the task storage size of the +Classic API initialization task. + +.. rubric:: NOTES: + +If this configuration option is specified, then + +* a task storage area of the specified size is statically allocated by + ``<rtems/confdefs.h>`` for the Classic API initialization task, + +* the Classic API initialization task is constructed by + :ref:`InterfaceRtemsTaskConstruct` instead of using + :ref:`InterfaceRtemsTaskCreate`, + +* the maximum thread-local storage size defined by + :ref:`CONFIGURE_MAXIMUM_THREAD_LOCAL_STORAGE_SIZE` is used for the Classic API + initialization task, + +* the Classic API initialization task should be accounted for in + :ref:`CONFIGURE_MINIMUM_TASKS_WITH_USER_PROVIDED_STORAGE`, and + +* the task storage area used for the Classic API initialization task is not + reclaimed by the system if the task is deleted. + +The + +* :ref:`CONFIGURE_INIT_TASK_STACK_SIZE` and + +* ``CONFIGURE_INIT_TASK_CONSTRUCT_STORAGE_SIZE`` + +configuration options are mutually exclusive. + +.. rubric:: CONSTRAINTS: + +The following constraints apply to this configuration option: + +* The value of the configuration option shall be greater than or equal to + :ref:`CONFIGURE_MINIMUM_TASK_STACK_SIZE`. + +* The value of the configuration option shall be defined using + :ref:`InterfaceRTEMSTASKSTORAGESIZE`. + +.. Generated from spec:/acfg/if/init-task-entrypoint + +.. raw:: latex + + \clearpage + +.. index:: CONFIGURE_INIT_TASK_ENTRY_POINT + +.. _CONFIGURE_INIT_TASK_ENTRY_POINT: + +CONFIGURE_INIT_TASK_ENTRY_POINT +------------------------------- + +.. rubric:: CONSTANT: + +``CONFIGURE_INIT_TASK_ENTRY_POINT`` + +.. rubric:: OPTION TYPE: + +This configuration option is an initializer define. + +.. rubric:: DEFAULT VALUE: + +The default value is ``Init``. + +.. rubric:: DESCRIPTION: + +The value of this configuration option initializes the entry point of the +Classic API initialization task. + +.. rubric:: NOTES: + +The application shall provide the function referenced by this configuration +option. + +.. rubric:: CONSTRAINTS: + +The value of the configuration option shall be defined to a valid function +pointer of the type ``void ( *entry_point )( rtems_task_argument )``. + +.. Generated from spec:/acfg/if/init-task-initial-modes + +.. raw:: latex + + \clearpage + +.. index:: CONFIGURE_INIT_TASK_INITIAL_MODES + +.. _CONFIGURE_INIT_TASK_INITIAL_MODES: + +CONFIGURE_INIT_TASK_INITIAL_MODES +--------------------------------- + +.. rubric:: CONSTANT: + +``CONFIGURE_INIT_TASK_INITIAL_MODES`` + +.. rubric:: OPTION TYPE: + +This configuration option is an integer define. + +.. rubric:: DEFAULT VALUE: + +In SMP configurations, the default value is :c:macro:`RTEMS_DEFAULT_MODES` +otherwise the default value is :c:macro:`RTEMS_NO_PREEMPT`. + +.. rubric:: DESCRIPTION: + +The value of this configuration option defines the initial execution mode of +the Classic API initialization task. + +.. rubric:: CONSTRAINTS: + +The value of the configuration option shall be a valid task mode set. + +.. Generated from spec:/acfg/if/init-task-name + +.. raw:: latex + + \clearpage + +.. index:: CONFIGURE_INIT_TASK_NAME + +.. _CONFIGURE_INIT_TASK_NAME: + +CONFIGURE_INIT_TASK_NAME +------------------------ + +.. rubric:: CONSTANT: + +``CONFIGURE_INIT_TASK_NAME`` + +.. rubric:: OPTION TYPE: + +This configuration option is an integer define. + +.. rubric:: DEFAULT VALUE: + +The default value is ``rtems_build_name( 'U', 'I', '1', ' ' )``. + +.. rubric:: DESCRIPTION: + +The value of this configuration option defines the name of the Classic API +initialization task. + +.. rubric:: NOTES: + +Use :ref:`InterfaceRtemsBuildName` to define the task name. + +.. rubric:: CONSTRAINTS: + +The value of the configuration option shall be convertible to an integer of +type :c:type:`rtems_name`. + +.. Generated from spec:/acfg/if/init-task-priority + +.. raw:: latex + + \clearpage + +.. index:: CONFIGURE_INIT_TASK_PRIORITY + +.. _CONFIGURE_INIT_TASK_PRIORITY: + +CONFIGURE_INIT_TASK_PRIORITY +---------------------------- + +.. rubric:: CONSTANT: + +``CONFIGURE_INIT_TASK_PRIORITY`` + +.. rubric:: OPTION TYPE: + +This configuration option is an integer define. + +.. rubric:: DEFAULT VALUE: + +The default value is 1. + +.. rubric:: DESCRIPTION: + +The value of this configuration option defines the initial priority of the +Classic API initialization task. + +.. rubric:: CONSTRAINTS: + +The value of the configuration option shall be a valid Classic API task +priority. The set of valid task priorities depends on the scheduler +configuration. + +.. Generated from spec:/acfg/if/init-task-stack-size + +.. raw:: latex + + \clearpage + +.. index:: CONFIGURE_INIT_TASK_STACK_SIZE + +.. _CONFIGURE_INIT_TASK_STACK_SIZE: + +CONFIGURE_INIT_TASK_STACK_SIZE +------------------------------ + +.. rubric:: CONSTANT: + +``CONFIGURE_INIT_TASK_STACK_SIZE`` + +.. rubric:: OPTION TYPE: + +This configuration option is an integer define. + +.. rubric:: DEFAULT VALUE: + +The default value is :ref:`CONFIGURE_MINIMUM_TASK_STACK_SIZE`. + +.. rubric:: DESCRIPTION: + +The value of this configuration option defines the task stack size of the +Classic API initialization task. + +.. rubric:: NOTES: + +The + +* ``CONFIGURE_INIT_TASK_STACK_SIZE`` and + +* :ref:`CONFIGURE_INIT_TASK_CONSTRUCT_STORAGE_SIZE` + +configuration options are mutually exclusive. + +.. rubric:: CONSTRAINTS: + +The following constraints apply to this configuration option: + +* The value of the configuration option shall be greater than or equal to + :ref:`CONFIGURE_MINIMUM_TASK_STACK_SIZE`. + +* The value of the configuration option shall be small enough so that the task + stack space calculation carried out by ``<rtems/confdefs.h>`` does not + overflow an integer of type `uintptr_t + <https://en.cppreference.com/w/c/types/integer>`_. + +.. Generated from spec:/acfg/if/rtems-init-tasks-table + +.. raw:: latex + + \clearpage + +.. index:: CONFIGURE_RTEMS_INIT_TASKS_TABLE + +.. _CONFIGURE_RTEMS_INIT_TASKS_TABLE: + +CONFIGURE_RTEMS_INIT_TASKS_TABLE +-------------------------------- + +.. rubric:: CONSTANT: + +``CONFIGURE_RTEMS_INIT_TASKS_TABLE`` + +.. rubric:: OPTION TYPE: + +This configuration option is a boolean feature define. + +.. rubric:: DEFAULT CONFIGURATION: + +If this configuration option is undefined, then the described feature is not +enabled. + +.. rubric:: DESCRIPTION: + +In case this configuration option is defined, then exactly one Classic API +initialization task is configured. + +.. rubric:: NOTES: + +The application shall define at least one of the following configuration +options + +* ``CONFIGURE_RTEMS_INIT_TASKS_TABLE``, + +* :ref:`CONFIGURE_POSIX_INIT_THREAD_TABLE`, or + +* :ref:`CONFIGURE_IDLE_TASK_INITIALIZES_APPLICATION` + +otherwise a compile time error in the configuration file will occur. + +The Classic API initialization task performs the +:ref:`GlobalConstruction`. |