rt-thread/src/Kconfig

#include "rtconfig.h"
menu "RT-Thread Kernel"

config RT_NAME_MAX
    int "The maximal size of kernel object name"
    range 1 64
    default 8
    help
        Each kernel object, such as thread, timer, semaphore etc, has a name,
        the RT_NAME_MAX is the maximal size of this object name.

config RT_USING_ARCH_DATA_TYPE
    bool "Use the data types defined in ARCH_CPU"
    default n
    help
        For the data type like, `rt_uint8/int8_t, rt_uint16/int16_t, rt_uint32/int32_t`,
        BSP can define these basic data types in ARCH_CPU level.

        Please re-define these data types in rtconfig_project.h file.

config RT_USING_SMART
    bool "Enable RT-Thread Smart (microkernel on kernel/userland)"
    default n
    select RT_USING_LWP
    select RT_USING_DFS
    select RT_USING_LIBC
    select RT_USING_POSIX_CLOCKTIME
    select RT_USING_TTY
    select RT_USING_NULL
    select RT_USING_ZERO
    select RT_USING_RANDOM
    select RT_USING_RTC
    select RT_USING_POSIX_TIMER
    select RT_USING_POSIX_CLOCK
    select RT_USING_POSIX_FS
    select RT_USING_POSIX_TERMIOS
    depends on ARCH_ARM_CORTEX_M || ARCH_ARM_ARM9 || ARCH_ARM_CORTEX_A || ARCH_ARMV8 || ARCH_RISCV64
    help
        RT-Thread Smart is a microkernel based operating system on RT-Thread.

config RT_USING_SMP
    bool "Enable SMP(Symmetric multiprocessing)"
    default n
    help
        This option should be selected by machines which have an SMP-
        capable CPU.
        The only effect of this option is to make the SMP-related
        options available to the user for configuration.

config RT_CPUS_NR
    int "Number of CPUs"
    default 2
    depends on RT_USING_SMP
    help
        Number of CPUs in the system

config RT_ALIGN_SIZE
    int "Alignment size for CPU architecture data access"
    default 8
    help
        Alignment size for CPU architecture data access

    choice
        prompt "The maximal level value of priority of thread"
        default RT_THREAD_PRIORITY_32

        config RT_THREAD_PRIORITY_8
            bool "8"

        config RT_THREAD_PRIORITY_32
            bool "32"

        config RT_THREAD_PRIORITY_256
            bool "256"
    endchoice

config RT_THREAD_PRIORITY_MAX
    int
    default 8   if RT_THREAD_PRIORITY_8
    default 32  if RT_THREAD_PRIORITY_32
    default 256 if RT_THREAD_PRIORITY_256

config RT_TICK_PER_SECOND
    int "Tick frequency, Hz"
    range 10 1000
    default 1000
    help
        System's tick frequency, Hz.

config RT_USING_OVERFLOW_CHECK
    bool "Using stack overflow checking"
    default y
    help
        Enable thread stack overflow checking. The stack overflow is checking when
        each thread switch.

config RT_USING_HOOK
    bool "Enable system hook"
    default y
    select RT_USING_IDLE_HOOK
    help
        Enable the hook function when system running, such as idle thread hook,
        thread context switch etc.

    if RT_USING_HOOK
        config RT_HOOK_USING_FUNC_PTR
            bool "Using function pointers as system hook"
            default y
    endif

config RT_USING_IDLE_HOOK
    bool "Enable IDLE Task hook"
    default y if RT_USING_HOOK

    if RT_USING_IDLE_HOOK
        config RT_IDLE_HOOK_LIST_SIZE
            int "The max size of idle hook list"
            default 4
            range 1 16
            help
                The system has a hook list. This is the hook list size.
    endif

config IDLE_THREAD_STACK_SIZE
    int "The stack size of idle thread"
    default 1024 if ARCH_CPU_64BIT
    default 256

config SYSTEM_THREAD_STACK_SIZE
    int "The stack size of system thread (for defunct etc.)"
    depends on RT_USING_SMP
    default IDLE_THREAD_STACK_SIZE

config RT_USING_TIMER_SOFT
    bool "Enable software timer with a timer thread"
    default y
    help
        the timeout function context of soft-timer is under a high priority timer
        thread.

if RT_USING_TIMER_SOFT
    config RT_TIMER_THREAD_PRIO
        int "The priority level value of timer thread"
        default 4

    config RT_TIMER_THREAD_STACK_SIZE
        int "The stack size of timer thread"
        default 2048 if ARCH_CPU_64BIT
        default 512
endif

menu "kservice optimization"

    config RT_KSERVICE_USING_STDLIB
        bool "Enable kservice to use standard C library"
        default y

    if RT_KSERVICE_USING_STDLIB
        config RT_KSERVICE_USING_STDLIB_MEMORY
            bool "Use stdlib memory functions to replace (faster, but not safe)"
            default n
            help
                e.g. use memcpy to replace rt_memcpy
    endif

    config RT_KSERVICE_USING_TINY_SIZE
        bool "Enable kservice to use tiny size"
        default n

    config RT_USING_TINY_FFS
        bool "Enable kservice to use tiny finding first bit set method"
        default n

    config RT_KPRINTF_USING_LONGLONG
        bool "Enable rt_printf-family functions to support long-long format"
        default y if ARCH_CPU_64BIT
        default n
        help
            Enable rt_printf()/rt_snprintf()/rt_sprintf()/rt_vsnprintf()/rt_vsprintf()
            functions to support long-long format

endmenu

menuconfig RT_DEBUG
    bool "Enable debugging features"
    default y

if RT_DEBUG

    config RT_DEBUG_COLOR
        bool "Enable color debugging log"
        default n

    config RT_DEBUG_INIT_CONFIG
        bool "Enable debugging of components initialization"
        default n

    config RT_DEBUG_INIT
        int
        default 1 if RT_DEBUG_INIT_CONFIG

    config RT_DEBUG_THREAD_CONFIG
        bool "Enable debugging of Thread State Changes"
        default n

    config RT_DEBUG_THREAD
        int
        default 1 if RT_DEBUG_THREAD_CONFIG

    config RT_DEBUG_SCHEDULER_CONFIG
        bool "Enable debugging of Scheduler"
        default n

    config RT_DEBUG_SCHEDULER
        int
        default 1 if RT_DEBUG_SCHEDULER_CONFIG

    config RT_DEBUG_IPC_CONFIG
        bool "Enable debugging of IPC"
        default n

    config RT_DEBUG_IPC
        int
        default 1 if RT_DEBUG_IPC_CONFIG

    config RT_DEBUG_TIMER_CONFIG
        bool "Enable debugging of Timer"
        default n

    config RT_DEBUG_TIMER
        int
        default 1 if RT_DEBUG_TIMER_CONFIG

    config RT_DEBUG_IRQ_CONFIG
        bool "Enable debugging of IRQ(Interrupt Request)"
        default n

    config RT_DEBUG_IRQ
        int
        default 1 if RT_DEBUG_IRQ_CONFIG

    config RT_DEBUG_MEM_CONFIG
        bool "Enable debugging of Small Memory Algorithm"
        default n

    config RT_DEBUG_MEM
        int
        default 1 if RT_DEBUG_MEM_CONFIG

    config RT_DEBUG_SLAB_CONFIG
        bool "Enable debugging of SLAB Memory Algorithm"
        default n

    config RT_DEBUG_SLAB
        int
        default 1 if RT_DEBUG_SLAB_CONFIG

    config RT_DEBUG_MEMHEAP_CONFIG
        bool "Enable debugging of Memory Heap Algorithm"
        default n

    config RT_DEBUG_MEMHEAP
        int
        default 1 if RT_DEBUG_MEMHEAP_CONFIG

    if ARCH_MM_MMU
        config RT_DEBUG_PAGE_LEAK
            bool "Enable page leaking tracer"
            default n
    endif

    config RT_DEBUG_MODULE_CONFIG
        bool "Enable debugging of Application Module"
        default n

    config RT_DEBUG_MODULE
        int
        default 1 if RT_DEBUG_MODULE_CONFIG

endif

menu "Inter-Thread communication"

    config RT_USING_SEMAPHORE
        bool "Enable semaphore"
        default y

    config RT_USING_MUTEX
        bool "Enable mutex"
        default y

    config RT_USING_EVENT
        bool "Enable event flag"
        default y

    config RT_USING_MAILBOX
        bool "Enable mailbox"
        default y

    config RT_USING_MESSAGEQUEUE
        bool "Enable message queue"
        default y

    config RT_USING_SIGNALS
        bool "Enable signals"
        select RT_USING_MEMPOOL
        default n
        help
            A signal is an asynchronous notification sent to a specific thread
            in order to notify it of an event that occurred.

endmenu

menu "Memory Management"

    if ARCH_MM_MMU
        config RT_PAGE_MAX_ORDER
            int "Max order of pages allocatable by page allocator"
            default 11
            help
                For example, A value of 11 means the maximum chunk of contiguous memory
                allocatable by page system is 2^(11 + ARCH_PAGE_BITS - 1) Bytes.
                Large memory requirement can consume all system resource, and should
                consider reserved memory instead to enhance system endurance.
                Max order should at least satisfied usage by huge page.
    endif

    config RT_USING_MEMPOOL
        bool "Using memory pool"
        default y
        help
            Using static memory fixed partition

    config RT_USING_SMALL_MEM
        bool "Using Small Memory Algorithm"
        default n
        help
            Using Small Memory Algorithm

    config RT_USING_SLAB
        bool "Using SLAB Memory Algorithm"
        default n
        help
            The slab allocator of RT-Thread is a memory allocation algorithm
             optimizedfor embedded systems based on the slab allocator
             implemented by Matthew Dillon, founder of dragonfly BSD.
             The original slab algorithm is an efficient kernel memory
             allocation algorithm introduced by Jeff bonwick for
             Solaris Operating System.

    menuconfig RT_USING_MEMHEAP
        bool "Using memheap Memory Algorithm"
        default n

        if RT_USING_MEMHEAP
            choice
                prompt "Memheap memory allocation mode"
                default RT_MEMHEAP_FAST_MODE

                config RT_MEMHEAP_FAST_MODE
                    bool "fast mode"
                    help
                        Speed priority mode.
                        As long as the memory block size meets the requirements, the search ends immediately.

                config RT_MEMHEAP_BEST_MODE
                    bool "best mode"
                    help
                        Best size first.
                        The search does not end until the memory block of the most appropriate size is found
            endchoice
        endif

    choice
        prompt "System Heap Memory Management"
        default RT_USING_SMALL_MEM_AS_HEAP

        config RT_USING_SMALL_MEM_AS_HEAP
            bool "Small Memory Algorithm"
            select RT_USING_SMALL_MEM

        config RT_USING_MEMHEAP_AS_HEAP
            bool "Use memheap objects as heap"
            select RT_USING_MEMHEAP

            if RT_USING_MEMHEAP_AS_HEAP
                config RT_USING_MEMHEAP_AUTO_BINDING
                    bool "Use all of memheap objects as heap"
                    default y
            endif

        config RT_USING_SLAB_AS_HEAP
            bool "SLAB Algorithm for large memory"
            select RT_USING_SLAB

        config RT_USING_USERHEAP
            bool "Use user heap"
            help
                If this option is selected, please implement these functions:
                    rt_malloc(), rt_malloc_sethook()
                    rt_free(),   rt_free_sethook()
                    rt_calloc(), rt_realloc()
                    rt_memory_info()
                    rt_system_heap_init()

        config RT_USING_NOHEAP
            bool "Disable Heap"
    endchoice

    config RT_USING_MEMTRACE
        bool "Enable memory trace"
        default n
        help
            When enable RT_USING_MEMTRACE with shell, developer can call cmd:
            1. memtrace
                to dump memory block information.
            2. memcheck
                to check memory block to avoid memory overwritten.

            And developer also can call memcheck() in each of scheduling
            to check memory block to find which thread has wrongly modified
            memory.

    config RT_USING_HEAP_ISR
        bool "Using heap in ISR"
        default n
        help
            When this option is enabled, the critical zone will be protected with disable interrupt.

    config RT_USING_HEAP
        bool
        default n if RT_USING_NOHEAP
        default y if RT_USING_SMALL_MEM
        default y if RT_USING_SLAB
        default y if RT_USING_MEMHEAP_AS_HEAP
        default y if RT_USING_USERHEAP
endmenu

menu "Kernel Device Object"

    config RT_USING_DEVICE
        bool "Using device object"
        default y

    config RT_USING_DEVICE_OPS
        bool "Using ops for each device object"
        default n

    config RT_USING_DM
        bool "Enable device driver model with device tree"
        default n
        help
            Enable device driver model with device tree (FDT). It will use more memory
            to parse and support device tree feature.

    config RT_USING_DM_FDT
        bool "Enablie builtin libfdt"
        depends on RT_USING_DM
        default y
        help
            libfdt - Flat Device Tree manipulation. If your code already contains the
            libfdt, you can cancel this built-in libfdt to avoid link issue.

    config RT_USING_INTERRUPT_INFO
        bool "Enable additional interrupt trace information"
        default n
        help
            Add name and counter information for interrupt trace.

    config RT_USING_CONSOLE
        bool "Using console for rt_kprintf"
        default y

    if RT_USING_CONSOLE
        config RT_CONSOLEBUF_SIZE
            int "the buffer size for console log printf"
            default 128

        config RT_CONSOLE_DEVICE_NAME
            string "the device name for console"
            default "uart"
    endif

endmenu

config RT_VER_NUM
    hex
    default 0x50001
    help
        RT-Thread version number

config RT_USING_STDC_ATOMIC
    bool "Use atomic implemented in stdatomic.h"
    default n

endmenu