2 # Plug and Play BIOS configuration
5 bool "Plug and Play BIOS support (EXPERIMENTAL)"
6 depends on PNP && X86 && EXPERIMENTAL
8 Linux uses the PNPBIOS as defined in "Plug and Play BIOS
9 Specification Version 1.0A May 5, 1994" to autodetect built-in
10 mainboard resources (e.g. parallel port resources).
12 Some features (e.g. event notification, docking station information,
13 ISAPNP services) are not currently implemented.
15 If you would like the kernel to detect and allocate resources to
16 your mainboard devices (on some systems they are disabled by the
17 BIOS) say Y here. Also the PNPBIOS can help prevent resource
18 conflicts between mainboard devices and other bus devices.
20 Note: ACPI is expected to supersede PNPBIOS some day, currently it
21 co-exists nicely. If you have a non-ISA system that supports ACPI,
22 you probably don't need PNPBIOS support.
24 config PNPBIOS_PROC_FS
25 bool "Plug and Play BIOS /proc interface"
26 depends on PNPBIOS && PROC_FS
28 If you say Y here and to "/proc file system support", you will be
29 able to directly access the PNPBIOS. This includes resource
30 allocation, ESCD, and other PNPBIOS services. Using this
31 interface is potentially dangerous because the PNPBIOS driver will
32 not be notified of any resource changes made by writting directly.
33 Also some buggy systems will fault when accessing certain features
34 in the PNPBIOS /proc interface (e.g. "boot" configs).
36 See the latest pcmcia-cs (stand-alone package) for a nice set of
37 PNPBIOS /proc interface tools (lspnp and setpnp).
39 Unless you are debugging or have other specific reasons, it is
40 recommended that you say N here.