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397 lines
10 KiB
397 lines
10 KiB
# |
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# For a description of the syntax of this configuration file, |
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# see misc/tools/kconfig-language.txt. |
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# |
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config MSEC_PER_TICK |
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int "tick timer" |
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default 10 |
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---help--- |
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The default system timer is 100Hz or MSEC_PER_TICK=10. This setting |
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may be defined to inform NuttX that the processor hardware is providing |
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system timer interrupts at some interrupt interval other than 10 msec. |
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config RR_INTERVAL |
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int "round robin timeslice" |
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default 0 |
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---help--- |
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The round robin timeslice will be set this number of milliseconds; |
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Round robin scheduling can be disabled by setting this value to zero. |
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config SCHED_INSTRUMENTATION |
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bool "Monitor system performance" |
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default n |
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---help--- |
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enables instrumentation in scheduler to monitor system performance. |
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config TASK_NAME_SIZE |
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int "Maximum task name size" |
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default 32 |
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---help--- |
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Spcifies that maximum size of a task name to save in the TCB. |
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Useful if scheduler instrumentation is selected. Set to zero to |
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disable. |
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config JULIAN_TIME |
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bool "Enables Julian time conversions" |
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default n |
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---help--- |
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Enables Julian time conversions |
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config START_YEAR |
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int "start year" |
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default 2010 |
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config START_MONTH |
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int "start month" |
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default 1 |
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config START_DAY |
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int "start day" |
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default 1 |
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config DEV_CONSOLE |
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bool "Enable /dev/console" |
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default y |
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---help--- |
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Set if architecture-specific logic provides /dev/console. Enables |
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stdout, stderr, stdin. |
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config DEV_LOWCONSOLE |
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bool "enable low-level serial console" |
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default n |
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---help--- |
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Use the simple, low-level, write-only serial console driver (minimul support) |
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config MUTEX_TYPES: |
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bool "Enable mutex types" |
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default n |
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---help--- |
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Set to enable support for recursive and errorcheck mutexes. Enables |
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pthread_mutexattr_settype(). |
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config PRIORITY_INHERITANCE |
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bool "Enable priority inheritance " |
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default n |
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---help--- |
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Set to enable support for priority inheritance on mutexes and semaphores. |
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config SEM_PREALLOCHOLDERS |
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int "Pre-allocated holders" |
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default 16 |
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depends on PRIORITY_INHERITANCE |
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---help--- |
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This setting is only used if priority inheritance is enabled. |
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It defines the maximum number of different threads (minus one) that |
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can take counts on a semaphore with priority inheritance support. |
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This may be set to zero if priority inheritance is disabled OR if you |
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are only using semaphores as mutexes (only one holder) OR if no more |
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than two threads participate using a counting semaphore. |
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config SEM_NNESTPRIO |
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int "Maximum number of higher priority threads" |
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default 16 |
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depends on PRIORITY_INHERITANCE |
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---help--- |
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If priority inheritance is enabled, then this setting is the |
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maximum number of higher priority threads (minus 1) than can be |
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waiting for another thread to release a count on a semaphore. |
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This value may be set to zero if no more than one thread is |
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expected to wait for a semaphore. |
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config FDCLONE_DISABLE |
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bool "Disable cloning of file descriptors" |
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default n |
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---help--- |
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Disable cloning of all file descriptors |
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by task_create() when a new task is started. If set, all |
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files/drivers will appear to be closed in the new task. |
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config FDCLONE_STDIO |
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bool "Disable clone file descriptors without stdio" |
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default n |
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---help--- |
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Disable cloning of all but the first three file descriptors (stdin, |
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stdout, stderr) by task_create() when a new task is started. If set, |
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all files/drivers will appear to be closed in the new task except |
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for stdin, stdout, and stderr. |
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config SDCLONE_DISABLE |
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bool "Disable cloning of socket descriptors" |
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default n |
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---help--- |
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Disable cloning of all socket |
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desciptors by task_create() when a new task is started. If |
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set, all sockets will appear to be closed in the new task. |
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config SCHED_WORKQUEUE |
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bool "Enable worker thread" |
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default n |
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---help--- |
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Create a dedicated "worker" thread to handle delayed processing from interrupt |
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handlers. This feature is required for some drivers but, if there are no |
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complaints, can be safely disabled. The worker thread also performs |
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garbage collection -- completing any delayed memory deallocations from |
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interrupt handlers. If the worker thread is disabled, then that clean up will |
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be performed by the IDLE thread instead (which runs at the lowest of priority |
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and may not be appropriate if memory reclamation is of high priority). |
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config SCHED_WORKPRIORITY |
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int "Worker thread priority" |
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default 192 |
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depends on SCHED_WORKQUEUE |
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---help--- |
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The execution priority of the worker thread. Default: 192 |
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config SCHED_WORKPERIOD |
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int "Worker thread period" |
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default 50000 |
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depends on SCHED_WORKQUEUE |
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---help--- |
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How often the worker thread checks for work in units of microseconds. |
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Default: 50*1000 (50 MS). |
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config SCHED_WORKSTACKSIZE |
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int "Worker thread stack size" |
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default 2048 |
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depends on SCHED_WORKQUEUE |
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---help--- |
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The stack size allocated for the worker thread. Default: 2K. |
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config SIG_SIGWORK |
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int "Worker thread wakeup signal" |
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default 4 |
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depends on SCHED_WORKQUEUE |
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---help--- |
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The signal number that will be used to wake-up the worker thread. |
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Default: 4 |
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config SCHED_WAITPID |
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bool "Enable waitpid() API" |
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default n |
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---help--- |
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Enables the waitpid() API |
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config SCHED_ATEXIT |
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bool "Enable atexit() API" |
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default n |
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---help--- |
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Enables the atexit() API |
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config SCHED_ATEXIT_MAX |
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int "Max number of atexit() functions" |
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default 1 |
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depends on SCHED_ATEXIT |
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---help--- |
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By default if SCHED_ATEXIT is selected, only a single atexit() function |
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is supported. That number can be increased by defined this setting to |
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the number that you require. |
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config SCHED_ONEXIT |
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bool "Enable on_exit() API" |
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default n |
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---help--- |
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Enables the on_exit() API |
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config SCHED_ONEXIT_MAX |
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int "Max number of on_exit() functions" |
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default 1 |
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depends on SCHED_ONEXIT |
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---help--- |
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By default if SCHED_ONEXIT is selected, only a single on_exit() function |
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is supported. That number can be increased by defined this setting to the |
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number that you require. |
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config DISABLE_OS_API |
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bool "Disable NuttX interfaces" |
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default n |
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---help--- |
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The following can be used to disable categories of |
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APIs supported by the OS. If the compiler supports |
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weak functions, then it should not be necessary to |
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disable functions unless you want to restrict usage |
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of those APIs. |
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There are certain dependency relationships in these |
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features. |
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o mq_notify logic depends on signals to awaken tasks |
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waiting for queues to become full or empty. |
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o pthread_condtimedwait() depends on signals to wake |
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up waiting tasks. |
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config DISABLE_CLOCK |
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bool "Disable clock interfaces" |
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depends on DISABLE_OS_API |
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default n |
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config DISABLE_POSIX_TIMERS |
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bool "Disable POSIX timers" |
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depends on DISABLE_OS_API |
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default n |
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config DISABLE_PTHREAD |
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bool "Disable pthread support" |
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depends on DISABLE_OS_API |
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default n |
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config DISABLE_SIGNALS |
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bool "Disable signal support" |
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depends on DISABLE_OS_API |
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default n |
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config DISABLE_MQUEUE |
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bool "Disable POSIX message queue support" |
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depends on DISABLE_OS_API |
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default n |
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config DISABLE_MOUNTPOINT |
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bool "Disable support for mount points" |
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depends on DISABLE_OS_API |
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default n |
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config DISABLE_ENVIRON |
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bool "Disable environment variable support" |
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depends on DISABLE_OS_API |
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default n |
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config DISABLE_POLL |
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bool "Disable driver poll interfaces" |
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depends on DISABLE_OS_API |
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default n |
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comment "Sizes of configurable things (0 disables)" |
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config MAX_TASKS |
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int "Max tasks" |
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default 32 |
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---help--- |
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The maximum number of simultaneously active tasks. This value must be |
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a power of two. |
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config MAX_TASK_ARGS |
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int "Maximum number of task arguments" |
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default 4 |
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---help--- |
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This controls the maximum number of of parameters that a task may |
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receive (i.e., maxmum value of 'argc') |
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config NPTHREAD_KEYS |
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int "Number of pthread keys" |
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default 4 |
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---help--- |
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The number of items of thread- |
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specific data that can be retained |
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config NFILE_DESCRIPTORS |
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int "Max file descriptors" |
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default 16 |
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---help--- |
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The maximum number of file |
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descriptors (one for each open) |
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config NFILE_STREAMS |
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int "Max file streams" |
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default 16 |
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---help--- |
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The maximum number of streams that can be fopen'ed |
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config NAME_MAX |
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int "name max" |
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default 32 |
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---help--- |
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The maximum size of a file name. |
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config PREALLOC_MQ_MSGS |
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int "Pre-allocated messages" |
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default 32 |
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---help--- |
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The number of pre-allocated message structures. The system manages |
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a pool of preallocated message structures to minimize dynamic allocations |
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config MQ_MAXMSGSIZE |
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int "Maximum message size" |
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default 32 |
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---help--- |
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Message structures are allocated with a fixed payload size given by this |
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setting (does not include other message structure overhead. |
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config MAX_WDOGPARMS |
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int "max watchdog parms" |
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default 4 |
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---help--- |
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Maximum number of parameters that |
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can be passed to a watchdog handler |
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config PREALLOC_WDOGS |
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int "Pre-allocated watchdogs" |
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default 32 |
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---help--- |
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The number of pre-allocated watchdog structures. The system manages a |
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pool of preallocated watchdog structures to minimize dynamic allocations |
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config PREALLOC_TIMERS |
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int "Pre-allocated timers" |
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default 8 |
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---help--- |
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The number of pre-allocated POSIX timer structures. The system manages a |
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pool of preallocated timer structures to minimize dynamic allocations. Set to |
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zero for all dynamic allocations. |
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comment "Stack and heap information" |
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config BOOT_RUNFROMFLASH |
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bool "boot run from flash" |
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default n |
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---help--- |
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Some configurations support XIP operation from FLASH but must copy |
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initialized .data sections to RAM |
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config BOOT_COPYTORAM |
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bool "boot copy to ram" |
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default n |
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---help--- |
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Some configurations boot in FLASH |
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but copy themselves entirely into RAM for better performance. |
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config CUSTOM_STACK |
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bool "Enable custom stack" |
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default n |
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---help--- |
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The up_ implementation will handle all stack operations outside of the |
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nuttx model. This is necessary for certain architectures that have |
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have hardware stacks (such as the 8051 family). |
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config STACK_POINTER |
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hex "The initial stack pointer" |
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---help--- |
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The initial stack pointer (arm7tdmi only). |
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config IDLETHREAD_STACKSIZE |
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int "Idle thread stack size" |
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default 1024 |
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---help--- |
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The size of the initial stack used by the IDLE thread. The IDLE thread |
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is the thread that (1) performs the inital boot of the system up to the |
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point where user_start() is spawned, and (2) there after is the IDLE |
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thread that executes only when there is no other thread ready to run. |
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config USERMAIN_STACKSIZE |
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int "Main thread stack size" |
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default 2048 |
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---help--- |
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The size of the stack to allocate for the main user thread that begins at |
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the user_start() entry point. |
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config PTHREAD_STACK_MIN |
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int "Minimum pthread stack size" |
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default 256 |
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---help--- |
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Minimum pthread stack size |
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config PTHREAD_STACK_DEFAULT |
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int "Default pthread stack size" |
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default 2048 |
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---help--- |
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Default pthread stack size |
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