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menu "Generic Driver Options"
config UEVENT_HELPER_PATH
string "path to uevent helper"
depends on HOTPLUG
default "/sbin/hotplug"
help
Path to uevent helper program forked by the kernel for
every uevent.
config DEVTMPFS
bool "Create a kernel maintained /dev tmpfs (EXPERIMENTAL)"
depends on HOTPLUG && SHMEM && TMPFS
help
This creates a tmpfs filesystem, and mounts it at bootup
and mounts it at /dev. The kernel driver core creates device
nodes for all registered devices in that filesystem. All device
nodes are owned by root and have the default mode of 0600.
Userspace can add and delete the nodes as needed. This is
intended to simplify bootup, and make it possible to delay
the initial coldplug at bootup done by udev in userspace.
It should also provide a simpler way for rescue systems
to bring up a kernel with dynamic major/minor numbers.
Meaningful symlinks, permissions and device ownership must
still be handled by userspace.
If unsure, say N here.
config DEVTMPFS_MOUNT
bool "Automount devtmpfs at /dev"
depends on DEVTMPFS
help
This will mount devtmpfs at /dev if the kernel mounts the root
filesystem. It will not affect initramfs based mounting.
If unsure, say N here.
config STANDALONE
bool "Select only drivers that don't need compile-time external firmware" if EXPERIMENTAL
default y
help
Select this option if you don't have magic firmware for drivers that
need it.
If unsure, say Y.
config PREVENT_FIRMWARE_BUILD
bool "Prevent firmware from being built"
default y
help
Say yes to avoid building firmware. Firmware is usually shipped
with the driver, and only when updating the firmware a rebuild
should be made.
If unsure say Y here.
config FW_LOADER
tristate "Userspace firmware loading support" if EMBEDDED
depends on HOTPLUG
default y
---help---
This option is provided for the case where no in-kernel-tree modules
require userspace firmware loading support, but a module built outside
the kernel tree does.
config FIRMWARE_IN_KERNEL
bool "Include in-kernel firmware blobs in kernel binary"
depends on FW_LOADER
default y
help
The kernel source tree includes a number of firmware 'blobs'
which are used by various drivers. The recommended way to
use these is to run "make firmware_install" and to copy the
resulting binary files created in usr/lib/firmware directory
of the kernel tree to the /lib/firmware on your system so
that they can be loaded by userspace helpers on request.
Enabling this option will build each required firmware blob
into the kernel directly, where request_firmware() will find
them without having to call out to userspace. This may be
useful if your root file system requires a device which uses
such firmware, and do not wish to use an initrd.
This single option controls the inclusion of firmware for
every driver which uses request_firmware() and ships its
firmware in the kernel source tree, to avoid a proliferation
of 'Include firmware for xxx device' options.
Say 'N' and let firmware be loaded from userspace.
config EXTRA_FIRMWARE
string "External firmware blobs to build into the kernel binary"
depends on FW_LOADER
help
This option allows firmware to be built into the kernel, for the
cases where the user either cannot or doesn't want to provide it from
userspace at runtime (for example, when the firmware in question is
required for accessing the boot device, and the user doesn't want to
use an initrd).
This option is a string, and takes the (space-separated) names of the
firmware files -- the same names which appear in MODULE_FIRMWARE()
and request_firmware() in the source. These files should exist under
the directory specified by the EXTRA_FIRMWARE_DIR option, which is
by default the firmware/ subdirectory of the kernel source tree.
So, for example, you might set CONFIG_EXTRA_FIRMWARE="usb8388.bin",
copy the usb8388.bin file into the firmware/ directory, and build the
kernel. Then any request_firmware("usb8388.bin") will be
satisfied internally without needing to call out to userspace.
WARNING: If you include additional firmware files into your binary
kernel image which are not available under the terms of the GPL,
then it may be a violation of the GPL to distribute the resulting
image -- since it combines both GPL and non-GPL work. You should
consult a lawyer of your own before distributing such an image.
config EXTRA_FIRMWARE_DIR
string "Firmware blobs root directory"
depends on EXTRA_FIRMWARE != ""
default "firmware"
help
This option controls the directory in which the kernel build system
looks for the firmware files listed in the EXTRA_FIRMWARE option.
The default is the firmware/ directory in the kernel source tree,
but by changing this option you can point it elsewhere, such as
the /lib/firmware/ directory or another separate directory
containing firmware files.
config DEBUG_DRIVER
bool "Driver Core verbose debug messages"
depends on DEBUG_KERNEL
help
Say Y here if you want the Driver core to produce a bunch of
debug messages to the system log. Select this if you are having a
problem with the driver core and want to see more of what is
going on.
If you are unsure about this, say N here.
config DEBUG_DEVRES
bool "Managed device resources verbose debug messages"
depends on DEBUG_KERNEL
help
This option enables kernel parameter devres.log. If set to
non-zero, devres debug messages are printed. Select this if
you are having a problem with devres or want to debug
resource management for a managed device. devres.log can be
switched on and off from sysfs node.
If you are unsure about this, Say N here.
config SYS_HYPERVISOR
bool
default n
endmenu
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