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CONFIG_NOCACHE_MEMORY

Support for uncached memory

Type: bool

Help

Add a “nocache” read-write memory section that is configured to not be cached. This memory section can be used to perform DMA transfers when cache coherence issues are not optimal or can not be solved using cache maintenance operations.

Direct dependencies

ARCH_HAS_NOCACHE_MEMORY_SUPPORT

(Includes any dependencies from ifs and menus.)

Defaults

No defaults. Implicitly defaults to n.

Symbols that select this symbol

Symbols that imply this symbol

Kconfig definition

At arch/Kconfig:296

Included via Kconfig:8Kconfig.zephyr:29

Menu path: (Top) → General Architecture Options

config NOCACHE_MEMORY
    bool "Support for uncached memory"
    depends on ARCH_HAS_NOCACHE_MEMORY_SUPPORT
    help
      Add a "nocache" read-write memory section that is configured to
      not be cached. This memory section can be used to perform DMA
      transfers when cache coherence issues are not optimal or can not
      be solved using cache maintenance operations.

(The ‘depends on’ condition includes propagated dependencies from ifs and menus.)