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1# SPDX-License-Identifier: GPL-2.0-only2#3# Plug and Play BIOS configuration4#5config PNPBIOS6 bool "Plug and Play BIOS support"7 depends on ISA && X86_328 default n9 help10 Linux uses the PNPBIOS as defined in "Plug and Play BIOS11 Specification Version 1.0A May 5, 1994" to autodetect built-in12 mainboard resources (e.g. parallel port resources).13 14 Some features (e.g. event notification, docking station information,15 ISAPNP services) are not currently implemented.16 17 If you would like the kernel to detect and allocate resources to18 your mainboard devices (on some systems they are disabled by the19 BIOS) say Y here. Also the PNPBIOS can help prevent resource20 conflicts between mainboard devices and other bus devices.21 22 Note: ACPI is expected to supersede PNPBIOS some day, currently it23 co-exists nicely. If you have a non-ISA system that supports ACPI,24 you probably don't need PNPBIOS support.25 26config PNPBIOS_PROC_FS27 bool "Plug and Play BIOS /proc interface"28 depends on PNPBIOS && PROC_FS29 help30 If you say Y here and to "/proc file system support", you will be31 able to directly access the PNPBIOS. This includes resource32 allocation, ESCD, and other PNPBIOS services. Using this33 interface is potentially dangerous because the PNPBIOS driver will34 not be notified of any resource changes made by writing directly.35 Also some buggy systems will fault when accessing certain features36 in the PNPBIOS /proc interface (e.g. "boot" configs).37 38 See the latest pcmcia-cs (stand-alone package) for a nice set of39 PNPBIOS /proc interface tools (lspnp and setpnp).40 41 Unless you are debugging or have other specific reasons, it is42 recommended that you say N here.43 44