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