documentation/kernel-dev/concepts-appx.rst

35 needs for targeted hardware.
337 Determining Hardware and Non-Hardware Features for the Kernel Configuration Audit Phase
354 warnings, the system only reports missing "hardware" options as they
355 could result in a boot failure or indicate that important hardware is
358 To determine whether or not a given option is "hardware" or
359 "non-hardware", the kernel Metadata in ``yocto-kernel-cache`` contains
360 files that classify individual or groups of options as either hardware
361 or non-hardware. To better show this, consider a situation where the
364    yocto-kernel-cache/features/drm-psb/hardware.cfg
365    yocto-kernel-cache/features/kgdb/hardware.cfg
366    yocto-kernel-cache/ktypes/base/hardware.cfg
367    yocto-kernel-cache/bsp/mti-malta32/hardware.cfg
368    yocto-kernel-cache/bsp/qemu-ppc32/hardware.cfg
369    yocto-kernel-cache/bsp/qemuarma9/hardware.cfg
370    yocto-kernel-cache/bsp/mti-malta64/hardware.cfg
371    yocto-kernel-cache/bsp/arm-versatile-926ejs/hardware.cfg
372    yocto-kernel-cache/bsp/common-pc/hardware.cfg
373    yocto-kernel-cache/bsp/common-pc-64/hardware.cfg
374    yocto-kernel-cache/features/rfkill/non-hardware.cfg
375    yocto-kernel-cache/ktypes/base/non-hardware.cfg
376    yocto-kernel-cache/features/aufs/non-hardware.kcf
377    yocto-kernel-cache/features/ocf/non-hardware.kcf
378    yocto-kernel-cache/ktypes/base/non-hardware.kcf
379    yocto-kernel-cache/ktypes/base/hardware.kcf
380    yocto-kernel-cache/bsp/qemu-ppc32/hardware.kcf
384 -  ``hardware.kcf``: Specifies a list of kernel Kconfig files that
385    contain hardware options only.
387 -  ``non-hardware.kcf``: Specifies a list of kernel Kconfig files that
388    contain non-hardware options only.
390 -  ``hardware.cfg``: Specifies a list of kernel ``CONFIG_`` options that
391    are hardware, regardless of whether or not they are within a Kconfig
392    file specified by a hardware or non-hardware Kconfig file (i.e.
393    ``hardware.kcf`` or ``non-hardware.kcf``).
395 -  ``non-hardware.cfg``: Specifies a list of kernel ``CONFIG_`` options
396    that are not hardware, regardless of whether or not they are within a
397    Kconfig file specified by a hardware or non-hardware Kconfig file
398    (i.e. ``hardware.kcf`` or ``non-hardware.kcf``).
401 ``kernel-cache/bsp/mti-malta32/hardware.cfg``::
418 ``.cfg`` files as hardware or non-hardware, to prevent the OpenEmbedded