xref: /openbmc/u-boot/cmd/Kconfig (revision e8e09ba5)

menu "Command line interface"

config CMDLINE
	bool "Support U-Boot commands"
	default y
	help
	  Enable U-Boot's command-line functions. This provides a means
	  to enter commands into U-Boot for a wide variety of purposes. It
	  also allows scripts (containing commands) to be executed.
	  Various commands and command categorys can be indivdually enabled.
	  Depending on the number of commands enabled, this can add
	  substantially to the size of U-Boot.

config HUSH_PARSER
	bool "Use hush shell"
	depends on CMDLINE
	help
	  This option enables the "hush" shell (from Busybox) as command line
	  interpreter, thus enabling powerful command line syntax like
	  if...then...else...fi conditionals or `&&' and '||'
	  constructs ("shell scripts").

	  If disabled, you get the old, much simpler behaviour with a somewhat
	  smaller memory footprint.

config SYS_PROMPT
	string "Shell prompt"
	default "=> "
	help
	  This string is displayed in the command line to the left of the
	  cursor.

menu "Autoboot options"

config AUTOBOOT
	bool "Autoboot"
	default y
	help
	  This enables the autoboot.  See doc/README.autoboot for detail.

config AUTOBOOT_KEYED
	bool "Stop autobooting via specific input key / string"
	default n
	help
	  This option enables stopping (aborting) of the automatic
	  boot feature only by issuing a specific input key or
	  string. If not enabled, any input key will abort the
	  U-Boot automatic booting process and bring the device
	  to the U-Boot prompt for user input.

config AUTOBOOT_PROMPT
	string "Autoboot stop prompt"
	depends on AUTOBOOT_KEYED
	default "Autoboot in %d seconds\\n"
	help
	  This string is displayed before the boot delay selected by
	  CONFIG_BOOTDELAY starts. If it is not defined	there is no
	  output indicating that autoboot is in progress.

	  Note that this define is used as the (only) argument to a
	  printf() call, so it may contain '%' format specifications,
	  provided that it also includes, sepearated by commas exactly
	  like in a printf statement, the required arguments. It is
	  the responsibility of the user to select only such arguments
	  that are valid in the given context.

config AUTOBOOT_ENCRYPTION
	bool "Enable encryption in autoboot stopping"
	depends on AUTOBOOT_KEYED
	default n

config AUTOBOOT_DELAY_STR
	string "Delay autobooting via specific input key / string"
	depends on AUTOBOOT_KEYED && !AUTOBOOT_ENCRYPTION
	help
	  This option delays the automatic boot feature by issuing
	  a specific input key or string. If CONFIG_AUTOBOOT_DELAY_STR
	  or the environment variable "bootdelaykey" is specified
	  and this string is received from console input before
	  autoboot starts booting, U-Boot gives a command prompt. The
	  U-Boot prompt will time out if CONFIG_BOOT_RETRY_TIME is
	  used, otherwise it never times out.

config AUTOBOOT_STOP_STR
	string "Stop autobooting via specific input key / string"
	depends on AUTOBOOT_KEYED && !AUTOBOOT_ENCRYPTION
	help
	  This option enables stopping (aborting) of the automatic
	  boot feature only by issuing a specific input key or
	  string. If CONFIG_AUTOBOOT_STOP_STR or the environment
	  variable "bootstopkey" is specified and this string is
	  received from console input before autoboot starts booting,
	  U-Boot gives a command prompt. The U-Boot prompt never
	  times out, even if CONFIG_BOOT_RETRY_TIME is used.

config AUTOBOOT_KEYED_CTRLC
	bool "Enable Ctrl-C autoboot interruption"
	depends on AUTOBOOT_KEYED && !AUTOBOOT_ENCRYPTION
	default n
	help
	  This option allows for the boot sequence to be interrupted
	  by ctrl-c, in addition to the "bootdelaykey" and "bootstopkey".
	  Setting this variable	provides an escape sequence from the
	  limited "password" strings.

config AUTOBOOT_STOP_STR_SHA256
	string "Stop autobooting via SHA256 encrypted password"
	depends on AUTOBOOT_KEYED && AUTOBOOT_ENCRYPTION
	help
	  This option adds the feature to only stop the autobooting,
	  and therefore boot into the U-Boot prompt, when the input
	  string / password matches a values that is encypted via
	  a SHA256 hash and saved in the environment.

endmenu

source "cmd/fastboot/Kconfig"

comment "Commands"

menu "Info commands"

config CMD_BDI
	bool "bdinfo"
	default y
	help
	  Print board info

config CMD_CONFIG
	bool "config"
	select BUILD_BIN2C
	default SANDBOX
	help
	  Print ".config" contents.

	  If this option is enabled, the ".config" file contents are embedded
	  in the U-Boot image and can be printed on the console by the "config"
	  command.  This provides information of which options are enabled on
	  the running U-Boot.

config CMD_CONSOLE
	bool "coninfo"
	default y
	help
	  Print console devices and information.

config CMD_CPU
	bool "cpu"
	help
	  Print information about available CPUs. This normally shows the
	  number of CPUs, type (e.g. manufacturer, architecture, product or
	  internal name) and clock frequency. Other information may be
	  available depending on the CPU driver.

config CMD_LICENSE
	bool "license"
	select BUILD_BIN2C
	help
	  Print GPL license text

endmenu

menu "Boot commands"

config CMD_BOOTD
	bool "bootd"
	default y
	help
	  Run the command stored in the environment "bootcmd", i.e.
	  "bootd" does the same thing as "run bootcmd".

config CMD_BOOTM
	bool "bootm"
	default y
	help
	  Boot an application image from the memory.

config CMD_BOOTZ
	bool "bootz"
	help
	  Boot the Linux zImage

config CMD_BOOTI
	bool "booti"
	depends on ARM64
	default y
	help
	  Boot an AArch64 Linux Kernel image from memory.

config CMD_BOOTEFI
	bool "bootefi"
	depends on EFI_LOADER
	default y
	help
	  Boot an EFI image from memory.

config CMD_BOOTEFI_HELLO_COMPILE
	bool "Compile a standard EFI hello world binary for testing"
	depends on CMD_BOOTEFI && (ARM || X86)
	default y
	help
	  This compiles a standard EFI hello world application with U-Boot so
	  that it can be used with the test/py testing framework. This is useful
	  for testing that EFI is working at a basic level, and for bringing
	  up EFI support on a new architecture.

	  No additional space will be required in the resulting U-Boot binary
	  when this option is enabled.

config CMD_BOOTEFI_HELLO
	bool "Allow booting a standard EFI hello world for testing"
	depends on CMD_BOOTEFI_HELLO_COMPILE
	help
	  This adds a standard EFI hello world application to U-Boot so that
	  it can be used with the 'bootefi hello' command. This is useful
	  for testing that EFI is working at a basic level, and for bringing
	  up EFI support on a new architecture.

config CMD_BOOTMENU
	bool "bootmenu"
	select MENU
	help
	  Add an ANSI terminal boot menu command.

config CMD_ELF
	bool "bootelf, bootvx"
	default y
	help
	  Boot an ELF/vxWorks image from the memory.

config CMD_FDT
	bool "Flattened Device Tree utility commands"
	default y
	depends on OF_LIBFDT
	help
	  Do FDT related setup before booting into the Operating System.

config CMD_GO
	bool "go"
	default y
	help
	  Start an application at a given address.

config CMD_RUN
	bool "run"
	default y
	help
	  Run the command in the given environment variable.

config CMD_IMI
	bool "iminfo"
	default y
	help
	  Print header information for application image.

config CMD_IMLS
	bool "imls"
	default y
	help
	  List all images found in flash

config CMD_XIMG
	bool "imxtract"
	default y
	help
	  Extract a part of a multi-image.

config CMD_POWEROFF
	bool

endmenu

menu "Environment commands"

config CMD_ASKENV
	bool "ask for env variable"
	help
	  Ask for environment variable

config CMD_EXPORTENV
	bool "env export"
	default y
	help
	  Export environments.

config CMD_IMPORTENV
	bool "env import"
	default y
	help
	  Import environments.

config CMD_EDITENV
	bool "editenv"
	default y
	help
	  Edit environment variable.

config CMD_GREPENV
	bool "search env"
	help
	  Allow for searching environment variables

config CMD_SAVEENV
	bool "saveenv"
	default y
	help
	  Save all environment variables into the compiled-in persistent
	  storage.

config CMD_ENV_EXISTS
	bool "env exists"
	default y
	help
	  Check if a variable is defined in the environment for use in
	  shell scripting.

config CMD_ENV_CALLBACK
	bool "env callbacks - print callbacks and their associated variables"
	help
	  Some environment variable have callbacks defined by
	  U_BOOT_ENV_CALLBACK. These are called when the variable changes.
	  For example changing "baudrate" adjust the serial baud rate. This
	  command lists the currently defined callbacks.

config CMD_ENV_FLAGS
	bool "env flags -print variables that have non-default flags"
	help
	  Some environment variables have special flags that control their
	  behaviour. For example, serial# can only be written once and cannot
	  be deleted. This command shows the variables that have special
	  flags.

endmenu

menu "Memory commands"

config CMD_MEMORY
	bool "md, mm, nm, mw, cp, cmp, base, loop"
	default y
	help
	  Memory commands.
	    md - memory display
	    mm - memory modify (auto-incrementing address)
	    nm - memory modify (constant address)
	    mw - memory write (fill)
	    cp - memory copy
	    cmp - memory compare
	    base - print or set address offset
	    loop - initialize loop on address range

config CMD_CRC32
	bool "crc32"
	select HASH
	default y
	help
	  Compute CRC32.

config CMD_EEPROM
	bool "eeprom - EEPROM subsystem"
	help
	  (deprecated, needs conversion to driver model)
	  Provides commands to read and write EEPROM (Electrically Erasable
	  Programmable Read Only Memory) chips that are connected over an
	  I2C bus.

config CMD_EEPROM_LAYOUT
	bool "Enable layout-aware eeprom commands"
	depends on CMD_EEPROM
	help
	  (deprecated, needs conversion to driver model)
	  When enabled, additional eeprom sub-commands become available.

	  eeprom print - prints the contents of the eeprom in a human-readable
	  way (eeprom layout fields, and data formatted to be fit for human
	  consumption).

	  eeprom update - allows user to update eeprom fields by specifying
	  the field name, and providing the new data in a human readable format
	  (same format as displayed by the eeprom print command).

	  Both commands can either auto detect the layout, or be told which
	  layout to use.

	  Feature API:
	  __weak int parse_layout_version(char *str)
		- override to provide your own layout name parsing
	  __weak void __eeprom_layout_assign(struct eeprom_layout *layout,
			int layout_version);
		- override to setup the layout metadata based on the version
	  __weak int eeprom_layout_detect(unsigned char *data)
		- override to provide your own algorithm for detecting layout
			version
	  eeprom_field.c
		- contains various printing and updating functions for common
			types of eeprom fields. Can be used for defining
			custom layouts.

config EEPROM_LAYOUT_HELP_STRING
	  string "Tells user what layout names are supported"
	  depends on CMD_EEPROM_LAYOUT
	  default "<not defined>"
	  help
	    Help printed with the LAYOUT VERSIONS part of the 'eeprom'
	    command's help.

config CMD_MD5SUM
	bool "md5sum"
	default n
	select MD5
	help
	  Compute MD5 checksum.

config MD5SUM_VERFIY
	bool "md5sum -v"
	default n
	depends on CMD_MD5SUM
	help
	  Add -v option to verify data against an MD5 checksum.

config LOOPW
	bool "loopw"
	help
	  Infinite write loop on address range

config CMD_MEMTEST
	bool "memtest"
	help
	  Simple RAM read/write test.

config CMD_MX_CYCLIC
	bool "mdc, mwc"
	help
	  mdc - memory display cyclic
	  mwc - memory write cyclic

config CMD_MEMINFO
	bool "meminfo"
	help
	  Display memory information.

config CMD_UNZIP
	bool "unzip"
	help
	  Uncompress a zip-compressed memory region.

config CMD_ZIP
	bool "zip"
	help
	  Compress a memory region with zlib deflate method.

endmenu

menu "Device access commands"

config CMD_CLK
	bool "clk - Show clock frequencies"
	help
	  (deprecated)
	  Shows clock frequences by calling a sock_clk_dump() hook function.
	  This is depreated in favour of using the CLK uclass and accessing
	  clock values from associated drivers. However currently no command
	  exists for this.

config CMD_DM
	bool "dm - Access to driver model information"
	depends on DM
	default y
	help
	  Provides access to driver model data structures and information,
	  such as a list of devices, list of uclasses and the state of each
	  device (e.g. activated). This is not required for operation, but
	  can be useful to see the state of driver model for debugging or
	  interest.

config CMD_DEMO
	bool "demo - Demonstration commands for driver model"
	depends on DM
	help
	  Provides a 'demo' command which can be used to play around with
	  driver model. To use this properly you will need to enable one or
	  both of the demo devices (DM_DEMO_SHAPE and DM_DEMO_SIMPLE).
	  Otherwise you will always get an empty list of devices. The demo
	  devices are defined in the sandbox device tree, so the easiest
	  option is to use sandbox and pass the -d point to sandbox's
	  u-boot.dtb file.

config CMD_LOADB
	bool "loadb"
	default y
	help
	  Load a binary file over serial line.

config CMD_LOADS
	bool "loads"
	default y
	help
	  Load an S-Record file over serial line

config CMD_FLASH
	bool "flinfo, erase, protect"
	default y
	help
	  NOR flash support.
	    flinfo - print FLASH memory information
	    erase - FLASH memory
	    protect - enable or disable FLASH write protection

config CMD_GPT
	bool "GPT (GUID Partition Table) command"
	select PARTITION_UUIDS
	select EFI_PARTITION
	help
	  Enable the 'gpt' command to ready and write GPT style partition
	  tables.

config CMD_ARMFLASH
	#depends on FLASH_CFI_DRIVER
	bool "armflash"
	help
	  ARM Ltd reference designs flash partition access

config CMD_MMC
	bool "mmc"
	help
	  MMC memory mapped support.

config CMD_NAND
	bool "nand"
	default y if NAND_SUNXI
	help
	  NAND support.

if CMD_NAND
config CMD_NAND_TRIMFFS
	bool "nand write.trimffs"
	default y if ARCH_SUNXI
	help
	  Allows one to skip empty pages when flashing something on a NAND.

config CMD_NAND_LOCK_UNLOCK
	bool "nand lock/unlock"
	help
	  NAND locking support.

config CMD_NAND_TORTURE
	bool "nand torture"
	help
	  NAND torture support.

endif # CMD_NAND

config CMD_PART
	bool "part"
	select PARTITION_UUIDS
	help
	  Read and display information about the partition table on
	  various media.

config CMD_SF
	bool "sf"
	help
	  SPI Flash support

config CMD_SPI
	bool "sspi"
	help
	  SPI utility command.

config CMD_I2C
	bool "i2c"
	help
	  I2C support.

config CMD_USB
	bool "usb"
	help
	  USB support.

config CMD_DFU
	bool "dfu"
	select USB_FUNCTION_DFU
	help
	  Enables the command "dfu" which is used to have U-Boot create a DFU
	  class device via USB.

config CMD_USB_MASS_STORAGE
	bool "UMS usb mass storage"
	help
	  USB mass storage support

config CMD_FPGA
	bool "fpga"
	default y
	help
	  FPGA support.

config CMD_FPGA_LOADBP
	bool "fpga loadbp - load partial bitstream (Xilinx only)"
	depends on CMD_FPGA
	help
	  Supports loading an FPGA device from a bitstream buffer containing
	  a partial bitstream.

config CMD_FPGA_LOADFS
	bool "fpga loadfs - load bitstream from FAT filesystem (Xilinx only)"
	depends on CMD_FPGA
	help
	  Supports loading an FPGA device from a FAT filesystem.

config CMD_FPGA_LOADMK
	bool "fpga loadmk - load bitstream from image"
	depends on CMD_FPGA
	help
	  Supports loading an FPGA device from a image generated by mkimage.

config CMD_FPGA_LOADP
	bool "fpga loadp - load partial bitstream"
	depends on CMD_FPGA
	help
	  Supports loading an FPGA device from a bitstream buffer containing
	  a partial bitstream.

config CMD_FPGAD
	bool "fpgad - dump FPGA registers"
	help
	  (legacy, needs conversion to driver model)
	  Provides a way to dump FPGA registers by calling the board-specific
	  fpga_get_reg() function. This functions similarly to the 'md'
	  command.

config CMD_FUSE
	bool "fuse - support for the fuse subssystem"
	help
	  (deprecated - needs conversion to driver model)
	  This allows reading, sensing, programming or overriding fuses
	  which control the behaviour of the device. The command uses the
	  fuse_...() API.

config CMD_REMOTEPROC
	bool "remoteproc"
	depends on REMOTEPROC
	help
	  Support for Remote Processor control

config CMD_GPIO
	bool "gpio"
	help
	  GPIO support.

config CMD_FDC
	bool "fdcboot - Boot from floppy device"
	help
	  The 'fdtboot' command allows booting an image from a floppy disk.

endmenu


menu "Shell scripting commands"

config CMD_ECHO
	bool "echo"
	default y
	help
	  Echo args to console

config CMD_ITEST
	bool "itest"
	default y
	help
	  Return true/false on integer compare.

config CMD_SOURCE
	bool "source"
	default y
	help
	  Run script from memory

config CMD_SETEXPR
	bool "setexpr"
	default y
	help
	  Evaluate boolean and math expressions and store the result in an env
	    variable.
	  Also supports loading the value at a memory location into a variable.
	  If CONFIG_REGEX is enabled, setexpr also supports a gsub function.

endmenu

menu "Network commands"

config CMD_NET
	bool "bootp, tftpboot"
        select NET
	default y
	help
	  Network commands.
	  bootp - boot image via network using BOOTP/TFTP protocol
	  tftpboot - boot image via network using TFTP protocol

config CMD_TFTPPUT
	bool "tftp put"
	help
	  TFTP put command, for uploading files to a server

config CMD_TFTPSRV
	bool "tftpsrv"
	help
	  Act as a TFTP server and boot the first received file

config CMD_RARP
	bool "rarpboot"
	help
	  Boot image via network using RARP/TFTP protocol

config CMD_DHCP
	bool "dhcp"
	help
	  Boot image via network using DHCP/TFTP protocol

config CMD_PXE
	bool "pxe"
	select MENU
	help
	  Boot image via network using PXE protocol

config CMD_NFS
	bool "nfs"
	default y
	help
	  Boot image via network using NFS protocol.

config CMD_MII
	bool "mii"
	help
	  Enable MII utility commands.

config CMD_PING
	bool "ping"
	help
	  Send ICMP ECHO_REQUEST to network host

config CMD_CDP
	bool "cdp"
	help
	  Perform CDP network configuration

config CMD_SNTP
	bool "sntp"
	help
	  Synchronize RTC via network

config CMD_DNS
	bool "dns"
	help
	  Lookup the IP of a hostname

config CMD_LINK_LOCAL
	bool "linklocal"
	help
	  Acquire a network IP address using the link-local protocol

config CMD_ETHSW
	bool "ethsw"
	help
	  Allow control of L2 Ethernet switch commands. These are supported
	  by the vsc9953 Ethernet driver at present. Sub-commands allow
	  operations such as enabling / disabling a port and
	  viewing/maintaining the filtering database (FDB)

endmenu

menu "Misc commands"

config CMD_BMP
	bool "Enable 'bmp' command"
	depends on LCD || DM_VIDEO || VIDEO
	help
	  This provides a way to obtain information about a BMP-format iamge
	  and to display it. BMP (which presumably stands for BitMaP) is a
	  file format defined by Microsoft which supports images of various
	  depths, formats and compression methods. Headers on the file
	  determine the formats used. This command can be used by first loading
	  the image into RAM, then using this command to look at it or display
	  it.

config CMD_BSP
	bool "Enable board-specific commands"
	help
	  (deprecated: instead, please define a Kconfig option for each command)

	  Some boards have board-specific commands which are only enabled
	  during developemnt and need to be turned off for production. This
	  option provides a way to control this. The commands that are enabled
	  vary depending on the board.

config CMD_BKOPS_ENABLE
	bool "mmc bkops enable"
	depends on CMD_MMC
	default n
	help
	  Enable command for setting manual background operations handshake
	  on a eMMC device. The feature is optionally available on eMMC devices
	  conforming to standard >= 4.41.

config CMD_BLOCK_CACHE
	bool "blkcache - control and stats for block cache"
	depends on BLOCK_CACHE
	default y if BLOCK_CACHE
	help
	  Enable the blkcache command, which can be used to control the
	  operation of the cache functions.
	  This is most useful when fine-tuning the operation of the cache
	  during development, but also allows the cache to be disabled when
	  it might hurt performance (e.g. when using the ums command).

config CMD_CACHE
	bool "icache or dcache"
	help
	  Enable the "icache" and "dcache" commands

config CMD_DISPLAY
	bool "Enable the 'display' command, for character displays"
	help
	  (this needs porting to driver model)
	  This enables the 'display' command which allows a string to be
	  displayed on a simple board-specific display. Implement
	  display_putc() to use it.

config CMD_LED
	bool "led"
	default y if LED
	help
	  Enable the 'led' command which allows for control of LEDs supported
	  by the board. The LEDs can be listed with 'led list' and controlled
	  with led on/off/togle/blink. Any LED drivers can be controlled with
	  this command, e.g. led_gpio.

config CMD_DATE
	bool "date"
	default y if DM_RTC
	help
	  Enable the 'date' command for getting/setting the time/date in RTC
	  devices.

config CMD_TIME
	bool "time"
	help
	  Run commands and summarize execution time.

config CMD_GETTIME
	bool "gettime - read elapsed time"
	help
	  Enable the 'gettime' command which reads the elapsed time since
	  U-Boot started running. This shows the time in seconds and
	  milliseconds. See also the 'bootstage' command which provides more
	  flexibility for boot timing.

# TODO: rename to CMD_SLEEP
config CMD_MISC
	bool "sleep"
	default y
	help
	  Delay execution for some time

config CMD_TIMER
	bool "timer"
	help
	  Access the system timer.

config CMD_SETGETDCR
	bool "getdcr, setdcr, getidcr, setidcr"
	depends on 4xx
	default y
	help
	  getdcr - Get an AMCC PPC 4xx DCR's value
	  setdcr - Set an AMCC PPC 4xx DCR's value
	  getidcr - Get a register value via indirect DCR addressing
	  setidcr - Set a register value via indirect DCR addressing

config CMD_SOUND
	bool "sound"
	depends on SOUND
	help
	  This provides basic access to the U-Boot's sound support. The main
	  feature is to play a beep.

	     sound init   - set up sound system
	     sound play   - play a sound

config CMD_QFW
	bool "qfw"
	select QFW
	help
	  This provides access to the QEMU firmware interface.  The main
	  feature is to allow easy loading of files passed to qemu-system
	  via -kernel / -initrd

source "cmd/mvebu/Kconfig"

endmenu

config CMD_BOOTSTAGE
	bool "Enable the 'bootstage' command"
	depends on BOOTSTAGE
	help
	  Add a 'bootstage' command which supports printing a report
	  and un/stashing of bootstage data.

menu "Power commands"
config CMD_PMIC
	bool "Enable Driver Model PMIC command"
	depends on DM_PMIC
	help
	  This is the pmic command, based on a driver model pmic's API.
	  Command features are unchanged:
	  - list               - list pmic devices
	  - pmic dev <id>      - show or [set] operating pmic device (NEW)
	  - pmic dump          - dump registers
	  - pmic read address  - read byte of register at address
	  - pmic write address - write byte to register at address
	  The only one change for this command is 'dev' subcommand.

config CMD_REGULATOR
	bool "Enable Driver Model REGULATOR command"
	depends on DM_REGULATOR
	help
	  This command is based on driver model regulator's API.
	  User interface features:
	  - list               - list regulator devices
	  - regulator dev <id> - show or [set] operating regulator device
	  - regulator info     - print constraints info
	  - regulator status   - print operating status
	  - regulator value <val] <-f> - print/[set] voltage value [uV]
	  - regulator current <val>    - print/[set] current value [uA]
	  - regulator mode <id>        - print/[set] operating mode id
	  - regulator enable           - enable the regulator output
	  - regulator disable          - disable the regulator output

	  The '-f' (force) option can be used for set the value which exceeds
	  the limits, which are found in device-tree and are kept in regulator's
	  uclass platdata structure.

endmenu

menu "Security commands"
config CMD_AES
	bool "Enable the 'aes' command"
	select AES
	help
	  This provides a means to encrypt and decrypt data using the AES
	  (Advanced Encryption Standard). This algorithm uses a symetric key
	  and is widely used as a streaming cipher. Different key lengths are
	  supported by the algorithm but this command only supports 128 bits
	  at present.

config CMD_BLOB
	bool "Enable the 'blob' command"
	help
	  This is used with the Freescale secure boot mechanism.

	  Freescale's SEC block has built-in Blob Protocol which provides
	  a method for protecting user-defined data across system power
	  cycles. SEC block protects data in a data structure called a Blob,
	  which provides both confidentiality and integrity protection.

	  Encapsulating data as a blob
	  Each time that the Blob Protocol is used to protect data, a
	  different randomly generated key is used to encrypt the data.
	  This random key is itself encrypted using a key which is derived
	  from SoC's non-volatile secret key and a 16 bit Key identifier.
	  The resulting encrypted key along with encrypted data is called a
	  blob. The non-volatile secure key is available for use only during
	  secure boot.

	  During decapsulation, the reverse process is performed to get back
	  the original data.

	  Sub-commands:
            blob enc - encapsulating data as a cryptgraphic blob
	    blob dec - decapsulating cryptgraphic blob to get the data

	  Syntax:

	  blob enc src dst len km

	  Encapsulate and create blob of data $len bytes long
	  at address $src and store the result at address $dst.
	  $km is the 16 byte key modifier is also required for
	  generation/use as key for cryptographic operation. Key
	  modifier should be 16 byte long.

	  blob dec src dst len km

	  Decapsulate the  blob of data at address $src and
	  store result of $len byte at addr $dst.
	  $km is the 16 byte key modifier is also required for
	  generation/use as key for cryptographic operation. Key
	  modifier should be 16 byte long.

config CMD_HASH
	bool "Support 'hash' command"
	select HASH
	help
	  This provides a way to hash data in memory using various supported
	  algorithms (such as SHA1, MD5, CRC32). The computed digest can be
	  saved to memory or to an environment variable. It is also possible
	  to verify a hash against data in memory.

config CMD_TPM
	bool "Enable the 'tpm' command"
	depends on TPM
	help
	  This provides a means to talk to a TPM from the command line. A wide
	  range of commands if provided - see 'tpm help' for details. The
	  command requires a suitable TPM on your board and the correct driver
	  must be enabled.

config CMD_TPM_TEST
	bool "Enable the 'tpm test' command"
	depends on CMD_TPM
	help
	  This provides a a series of tests to confirm that the TPM is working
	  correctly. The tests cover initialisation, non-volatile RAM, extend,
	  global lock and checking that timing is within expectations. The
	  tests pass correctly on Infineon TPMs but may need to be adjusted
	  for other devices.

endmenu

menu "Firmware commands"
config CMD_CROS_EC
	bool "Enable crosec command"
	depends on CROS_EC
	default y
	help
	  Enable command-line access to the Chrome OS EC (Embedded
	  Controller). This provides the 'crosec' command which has
	  a number of sub-commands for performing EC tasks such as
	  updating its flash, accessing a small saved context area
	  and talking to the I2C bus behind the EC (if there is one).
endmenu

menu "Filesystem commands"
config CMD_CBFS
	bool "Enable the 'cbfs' command"
	depends on FS_CBFS
	help
	  Define this to enable support for reading from a Coreboot
	  filesystem. This is a ROM-based filesystem used for accessing files
	  on systems that use coreboot as the first boot-loader and then load
	  U-Boot to actually boot the Operating System. Available commands are
	  cbfsinit, cbfsinfo, cbfsls and cbfsload.

config CMD_CRAMFS
	bool "Enable the 'cramfs' command"
	depends on FS_CRAMFS
	help
	  This provides commands for dealing with CRAMFS (Compressed ROM
	  filesystem). CRAMFS is useful when space is tight since files are
	  compressed. Two commands are provided:

	     cramfsls   - lists files in a cramfs image
	     cramfsload - loads a file from a cramfs image

config CMD_EXT2
	bool "ext2 command support"
	help
	  Enables EXT2 FS command

config CMD_EXT4
	bool "ext4 command support"
	help
	  Enables EXT4 FS command

config CMD_EXT4_WRITE
	depends on CMD_EXT4
	bool "ext4 write command support"
	help
	  Enables EXT4 FS write command

config CMD_FAT
	bool "FAT command support"
	help
	  Support for the FAT fs

config CMD_FS_GENERIC
	bool "filesystem commands"
	help
	  Enables filesystem commands (e.g. load, ls) that work for multiple
	  fs types.

config CMD_FS_UUID
	bool "fsuuid command"
	help
	  Enables fsuuid command for filesystem UUID.

config CMD_MTDPARTS
	depends on ARCH_SUNXI
	bool "MTD partition support"
	help
	  MTD partition support

config MTDIDS_DEFAULT
	string "Default MTD IDs"
	depends on CMD_MTDPARTS
	help
	  Defines a default MTD ID

config MTDPARTS_DEFAULT
	string "Default MTD partition scheme"
	depends on CMD_MTDPARTS
	help
	  Defines a default MTD partitioning scheme in the Linux MTD command
	  line partitions format

endmenu

menu "Debug commands"

config CMD_BEDBUG
	bool "bedbug"
	help
	  The bedbug (emBEDded deBUGger) command provides debugging features
	  for some PowerPC processors. For details please see the
	  docuemntation in doc/README.beddbug

config CMD_DIAG
	bool "diag - Board diagnostics"
	help
	  This command provides access to board diagnostic tests. These are
	  called Power-on Self Tests (POST). The command allows listing of
	  available tests and running either all the tests, or specific tests
	  identified by name.

endmenu

config CMD_UBI
	tristate "Enable UBI - Unsorted block images commands"
	select CRC32
	select MTD_UBI
	default y if NAND_SUNXI
	help
	  UBI is a software layer above MTD layer which admits use of LVM-like
	  logical volumes on top of MTD devices, hides some complexities of
	  flash chips like wear and bad blocks and provides some other useful
	  capabilities. Please, consult the MTD web site for more details
	  (www.linux-mtd.infradead.org). Activate this option if you want
	  to use U-Boot UBI commands.

config CMD_UBIFS
	tristate "Enable UBIFS - Unsorted block images filesystem commands"
	depends on CMD_UBI
	select CRC32
	select RBTREE if ARCH_SUNXI
	select LZO if ARCH_SUNXI
	default y if NAND_SUNXI
	help
	  UBIFS is a file system for flash devices which works on top of UBI.

endmenu