| # SPDX-License-Identifier: GPL-2.0-only |
| # |
| # Plug and Play BIOS configuration |
| # |
| config PNPBIOS |
| bool "Plug and Play BIOS support" |
| depends on ISA && X86_32 |
| default n |
| ---help--- |
| Linux uses the PNPBIOS as defined in "Plug and Play BIOS |
| Specification Version 1.0A May 5, 1994" to autodetect built-in |
| mainboard resources (e.g. parallel port resources). |
| |
| Some features (e.g. event notification, docking station information, |
| ISAPNP services) are not currently implemented. |
| |
| If you would like the kernel to detect and allocate resources to |
| your mainboard devices (on some systems they are disabled by the |
| BIOS) say Y here. Also the PNPBIOS can help prevent resource |
| conflicts between mainboard devices and other bus devices. |
| |
| Note: ACPI is expected to supersede PNPBIOS some day, currently it |
| co-exists nicely. If you have a non-ISA system that supports ACPI, |
| you probably don't need PNPBIOS support. |
| |
| config PNPBIOS_PROC_FS |
| bool "Plug and Play BIOS /proc interface" |
| depends on PNPBIOS && PROC_FS |
| ---help--- |
| If you say Y here and to "/proc file system support", you will be |
| able to directly access the PNPBIOS. This includes resource |
| allocation, ESCD, and other PNPBIOS services. Using this |
| interface is potentially dangerous because the PNPBIOS driver will |
| not be notified of any resource changes made by writing directly. |
| Also some buggy systems will fault when accessing certain features |
| in the PNPBIOS /proc interface (e.g. "boot" configs). |
| |
| See the latest pcmcia-cs (stand-alone package) for a nice set of |
| PNPBIOS /proc interface tools (lspnp and setpnp). |
| |
| Unless you are debugging or have other specific reasons, it is |
| recommended that you say N here. |
| |
