Help¶

On MMU-based systems, indicates the maximum amount of memory which will be used for the newlib malloc() heap. The actual amount of memory used will be the minimum of this value and the amount of free physical memory at kernel boot.

Direct dependencies¶

MMU && NEWLIB_LIBC

(Includes any dependencies from ifs and menus.)

Default¶

1048576

Kconfig definition¶

At lib/libc/Kconfig:55

Included via Kconfig:8 → Kconfig.zephyr:33 → lib/Kconfig:4

Menu path: (Top) → C Library

config NEWLIB_LIBC_MAX_MAPPED_REGION_SIZE
    int "Maximum memory mapped for newlib heap"
    default 1048576
    depends on MMU && NEWLIB_LIBC
    help
      On MMU-based systems, indicates the maximum amount of memory which
      will be used for the newlib malloc() heap. The actual amount of
      memory used will be the minimum of this value and the amount of
      free physical memory at kernel boot.

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