menu "Generic Driver Options"
  
  config UEVENT_HELPER_PATH
  	string "path to uevent helper"
  	default ""
  	help
  	  Path to uevent helper program forked by the kernel for
  	  every uevent.
  	  Before the switch to the netlink-based uevent source, this was
  	  used to hook hotplug scripts into kernel device events. It
  	  usually pointed to a shell script at /sbin/hotplug.
  	  This should not be used today, because usual systems create
  	  many events at bootup or device discovery in a very short time
  	  frame. One forked process per event can create so many processes
  	  that it creates a high system load, or on smaller systems
  	  it is known to create out-of-memory situations during bootup.
  
  	  To disable user space helper program execution at early boot
  	  time specify an empty string here. This setting can be altered
  	  via /proc/sys/kernel/hotplug or via /sys/kernel/uevent_helper
  	  later at runtime.
  
  config DEVTMPFS
  	bool "Maintain a devtmpfs filesystem to mount at /dev"
  	help
  	  This creates a tmpfs/ramfs filesystem instance early at bootup.
  	  In this filesystem, the kernel driver core maintains device
  	  nodes with their default names and permissions for all
  	  registered devices with an assigned major/minor number.
  	  Userspace can modify the filesystem content as needed, add
  	  symlinks, and apply needed permissions.
  	  It provides a fully functional /dev directory, where usually
  	  udev runs on top, managing permissions and adding meaningful
  	  symlinks.
  	  In very limited environments, it may provide a sufficient
  	  functional /dev without any further help. It also allows simple
  	  rescue systems, and reliably handles dynamic major/minor numbers.
  
  	  Notice: if CONFIG_TMPFS isn't enabled, the simpler ramfs
  	  file system will be used instead.
  
  config DEVTMPFS_MOUNT
  	bool "Automount devtmpfs at /dev, after the kernel mounted the rootfs"
  	depends on DEVTMPFS
  	help
  	  This will instruct the kernel to automatically mount the
  	  devtmpfs filesystem at /dev, directly after the kernel has
  	  mounted the root filesystem. The behavior can be overridden
  	  with the commandline parameter: devtmpfs.mount=0|1.
  	  This option does not affect initramfs based booting, here
  	  the devtmpfs filesystem always needs to be mounted manually
  	  after the rootfs is mounted.
  	  With this option enabled, it allows to bring up a system in
  	  rescue mode with init=/bin/sh, even when the /dev directory
  	  on the rootfs is completely empty.
  
  config STANDALONE
  	bool "Select only drivers that don't need compile-time external firmware"
  	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 should a
  	  rebuild be made.
  	  If unsure, say Y here.
  
  config FW_LOADER
  	tristate "Userspace firmware loading support" if EXPERT
  	default y
  	---help---
  	  This option is provided for the case where none of the in-tree modules
  	  require userspace firmware loading support, but a module built
  	  out-of-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'
  	  that are used by various drivers. The recommended way to
  	  use these is to run "make firmware_install", which, after
  	  converting ihex files to binary, copies all of the needed
  	  binary files in firmware/ to /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 that uses
  	  such firmware and do not wish to use an initrd.
  
  	  This single option controls the inclusion of firmware for
  	  every driver that uses request_firmware() and ships its
  	  firmware in the kernel source tree, which avoids 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 case
  	  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 that 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.
  
  	  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 that 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 firmware/ in the kernel source tree, but by changing
  	  this option you can point it elsewhere, such as /lib/firmware/ or
  	  some other directory containing the firmware files.
  
  config FW_LOADER_USER_HELPER
  	bool "Fallback user-helper invocation for firmware loading"
  	depends on FW_LOADER
  	default y
  	help
  	  This option enables / disables the invocation of user-helper
  	  (e.g. udev) for loading firmware files as a fallback after the
  	  direct file loading in kernel fails.  The user-mode helper is
  	  no longer required unless you have a special firmware file that
  	  resides in a non-standard path.
  
  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
  
  config GENERIC_CPU_DEVICES
  	bool
  	default n
  
  config SOC_BUS
  	bool
  
  source "drivers/base/regmap/Kconfig"
  
  config DMA_SHARED_BUFFER
  	bool
  	default n
  	select ANON_INODES
  	help
  	  This option enables the framework for buffer-sharing between
  	  multiple drivers. A buffer is associated with a file using driver
  	  APIs extension; the file's descriptor can then be passed on to other
  	  driver.
  
  config DMA_CMA
  	bool "DMA Contiguous Memory Allocator"
  	depends on HAVE_DMA_CONTIGUOUS && CMA
  	help
  	  This enables the Contiguous Memory Allocator which allows drivers
  	  to allocate big physically-contiguous blocks of memory for use with
  	  hardware components that do not support I/O map nor scatter-gather.
  
  	  For more information see <include/linux/dma-contiguous.h>.
  	  If unsure, say "n".
  
  if  DMA_CMA
  comment "Default contiguous memory area size:"
  
  config CMA_SIZE_MBYTES
  	int "Size in Mega Bytes"
  	depends on !CMA_SIZE_SEL_PERCENTAGE
  	default 16
  	help
  	  Defines the size (in MiB) of the default memory area for Contiguous
  	  Memory Allocator.
  
  config CMA_SIZE_PERCENTAGE
  	int "Percentage of total memory"
  	depends on !CMA_SIZE_SEL_MBYTES
  	default 10
  	help
  	  Defines the size of the default memory area for Contiguous Memory
  	  Allocator as a percentage of the total memory in the system.
  
  choice
  	prompt "Selected region size"
  	default CMA_SIZE_SEL_MBYTES
  
  config CMA_SIZE_SEL_MBYTES
  	bool "Use mega bytes value only"
  
  config CMA_SIZE_SEL_PERCENTAGE
  	bool "Use percentage value only"
  
  config CMA_SIZE_SEL_MIN
  	bool "Use lower value (minimum)"
  
  config CMA_SIZE_SEL_MAX
  	bool "Use higher value (maximum)"
  
  endchoice
  
  config CMA_ALIGNMENT
  	int "Maximum PAGE_SIZE order of alignment for contiguous buffers"
  	range 4 9
  	default 8
  	help
  	  DMA mapping framework by default aligns all buffers to the smallest
  	  PAGE_SIZE order which is greater than or equal to the requested buffer
  	  size. This works well for buffers up to a few hundreds kilobytes, but
  	  for larger buffers it just a memory waste. With this parameter you can
  	  specify the maximum PAGE_SIZE order for contiguous buffers. Larger
  	  buffers will be aligned only to this specified order. The order is
  	  expressed as a power of two multiplied by the PAGE_SIZE.
  
  	  For example, if your system defaults to 4KiB pages, the order value
  	  of 8 means that the buffers will be aligned up to 1MiB only.
  
  	  If unsure, leave the default value "8".
  
  config CMA_AREAS
  	int "Maximum count of the CMA device-private areas"
  	default 7
  	help
  	  CMA allows to create CMA areas for particular devices. This parameter
  	  sets the maximum number of such device private CMA areas in the
  	  system.
  
  	  If unsure, leave the default value "7".
  
  endif
  
  endmenu