Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | # |
2 | # Plug and Play BIOS configuration | |
3 | # | |
4 | config PNPBIOS | |
5 | bool "Plug and Play BIOS support (EXPERIMENTAL)" | |
5c493f5c | 6 | depends on ISA && X86 && EXPERIMENTAL |
1da177e4 LT |
7 | default n |
8 | ---help--- | |
9 | Linux uses the PNPBIOS as defined in "Plug and Play BIOS | |
10 | Specification Version 1.0A May 5, 1994" to autodetect built-in | |
11 | mainboard resources (e.g. parallel port resources). | |
12 | ||
13 | Some features (e.g. event notification, docking station information, | |
14 | ISAPNP services) are not currently implemented. | |
15 | ||
16 | If you would like the kernel to detect and allocate resources to | |
17 | your mainboard devices (on some systems they are disabled by the | |
18 | BIOS) say Y here. Also the PNPBIOS can help prevent resource | |
19 | conflicts between mainboard devices and other bus devices. | |
20 | ||
21 | Note: ACPI is expected to supersede PNPBIOS some day, currently it | |
22 | co-exists nicely. If you have a non-ISA system that supports ACPI, | |
23 | you probably don't need PNPBIOS support. | |
24 | ||
25 | config PNPBIOS_PROC_FS | |
26 | bool "Plug and Play BIOS /proc interface" | |
27 | depends on PNPBIOS && PROC_FS | |
28 | ---help--- | |
29 | If you say Y here and to "/proc file system support", you will be | |
30 | able to directly access the PNPBIOS. This includes resource | |
31 | allocation, ESCD, and other PNPBIOS services. Using this | |
32 | interface is potentially dangerous because the PNPBIOS driver will | |
33 | not be notified of any resource changes made by writing directly. | |
34 | Also some buggy systems will fault when accessing certain features | |
35 | in the PNPBIOS /proc interface (e.g. "boot" configs). | |
36 | ||
37 | See the latest pcmcia-cs (stand-alone package) for a nice set of | |
38 | PNPBIOS /proc interface tools (lspnp and setpnp). | |
39 | ||
40 | Unless you are debugging or have other specific reasons, it is | |
41 | recommended that you say N here. | |
42 |