183 lines
5.1 KiB
Plaintext
183 lines
5.1 KiB
Plaintext
# Copyright (c) 2016 Intel Corporation
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# SPDX-License-Identifier: Apache-2.0
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menu "OS Support Library"
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config FDTABLE
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bool "File descriptor table"
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help
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This file provides generic file descriptor table implementation, suitable
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for any I/O object implementing POSIX I/O semantics (i.e. read/write +
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aux operations).
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config JSON_LIBRARY
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bool "Build JSON library"
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help
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Build a minimal JSON parsing/encoding library. Used by sample
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applications such as the NATS client.
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config RING_BUFFER
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bool "Ring buffers"
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help
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Enable usage of ring buffers. This is similar to kernel FIFOs but ring
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buffers manage their own buffer memory and can store arbitrary data.
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For optimal performance, use buffer sizes that are a power of 2.
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config NOTIFY
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bool "Asynchronous Notifications"
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help
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Use this API to support async transactions.
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config BASE64
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bool "Base64 encoding and decoding"
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help
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Enable base64 encoding and decoding functionality
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config PRINTK_SYNC
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bool "Serialize printk() calls"
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default y if SMP && MP_MAX_NUM_CPUS > 1 && !(EFI_CONSOLE && LOG)
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help
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When true, a spinlock will be taken around the output from a
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single printk() call, preventing the output data from
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interleaving with concurrent usage from another CPU or an
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preempting interrupt.
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config MPSC_PBUF
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bool "Multi producer, single consumer packet buffer"
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select TIMEOUT_64BIT
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help
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Enable usage of mpsc packet buffer. Packet buffer is capable of
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storing variable length packets in a circular way and operate directly
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on the buffer memory.
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config ONOFF
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bool "On-Off Manager"
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select NOTIFY
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help
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An on-off manager supports an arbitrary number of clients of a
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service which has a binary state. Example applications are power
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rails, clocks, and binary device power management.
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config SPSC_PBUF
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bool "Single producer, single consumer packet buffer"
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help
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Enable usage of spsc packet buffer. Packet buffer is capable of
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storing variable length packets in a circular way and operate directly
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on the buffer memory.
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if SPSC_PBUF
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choice SPSC_PBUF_CACHE_HANDLING
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prompt "Cache handling"
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default SPSC_PBUF_CACHE_ALWAYS if SPSC_PBUF_USE_CACHE && !SPSC_PBUF_NO_CACHE
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default SPSC_PBUF_CACHE_NEVER if !SPSC_PBUF_USE_CACHE && SPSC_PBUF_NO_CACHE
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default SPSC_PBUF_CACHE_FLAG
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config SPSC_PBUF_CACHE_FLAG
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bool "Use cache flag"
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help
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Use instance specific configuration flag for cache handling.
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config SPSC_PBUF_CACHE_ALWAYS
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bool "Always handle cache"
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help
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Handle cache writeback and invalidation for all instances. Option used
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to avoid runtime check and thus reduce memory footprint.
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config SPSC_PBUF_CACHE_NEVER
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bool "Never handle cache"
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help
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Discar cache handling for all instances. Option used to avoid runtime
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check and thus reduce memory footprint.
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endchoice
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config SPSC_PBUF_USE_CACHE
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bool
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config SPSC_PBUF_NO_CACHE
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bool
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if SPSC_PBUF_CACHE_FLAG || SPSC_PBUF_CACHE_ALWAYS
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config SPSC_PBUF_REMOTE_DCACHE_LINE
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int "Remote cache line size"
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default 32
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help
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If a packet buffer is used for data sharing between two cores then
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this value should be set to the data cache line size of the remote core.
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If local data cache line is detected at runtime then it should be
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maximum of local and remote line size.
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endif # SPSC_PBUF_CACHE_FLAG || SPSC_PBUF_CACHE_ALWAYS
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config SPSC_PBUF_UTILIZATION
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bool "Track maximum utilization"
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help
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When enabled, maximum utilization is tracked which can be used to
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determine the size of the packet buffer.
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endif # SPSC_PBUF
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config SHARED_MULTI_HEAP
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bool "Shared multi-heap manager"
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help
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Enable support for a shared multi-heap manager that uses the
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multi-heap allocator to manage a set of reserved memory regions with
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different capabilities / attributes (cacheable, non-cacheable,
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etc...) defined in the DT.
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config WINSTREAM
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bool "Lockless shared memory window byte stream"
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help
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Winstream is a byte stream IPC for use in shared memory
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"windows", generally for transmit to non-Zephyr contexts that
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can't share Zephyr APIs or data structures.
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if WINSTREAM
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config WINSTREAM_STDLIB_MEMCOPY
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bool "Use standard memcpy() in winstream"
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help
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The sys_winstream utility is sometimes used in early boot
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environments before the standard library is usable. By
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default it uses a simple internal bytewise memcpy(). Set
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this to use the one from the standard library.
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endif
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if MPSC_PBUF
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config MPSC_CLEAR_ALLOCATED
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bool "Clear allocated packet"
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help
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When enabled packet space is zeroed before returning from allocation.
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endif
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config REBOOT
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bool "Reboot functionality"
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help
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Enable the sys_reboot() API. Enabling this can drag in other subsystems
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needed to perform a "safe" reboot (e.g. to stop the system clock before
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issuing a reset).
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config HAS_POWEROFF
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bool
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help
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Option to signal that power off functionality is implemented.
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config POWEROFF
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bool "Power off functionality"
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depends on HAS_POWEROFF
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help
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Enable support for system power off.
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config UTF8
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bool "UTF-8 string operation supported"
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help
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Enable the utf8 API. The API implements functions to specifically
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handle UTF-8 encoded strings.
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rsource "Kconfig.cbprintf"
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rsource "Kconfig.heap"
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endmenu
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