1 menu "Command line interface"
4 bool "Support U-Boot commands"
7 Enable U-Boot's command-line functions. This provides a means
8 to enter commands into U-Boot for a wide variety of purposes. It
9 also allows scripts (containing commands) to be executed.
10 Various commands and command categorys can be indivdually enabled.
11 Depending on the number of commands enabled, this can add
12 substantially to the size of U-Boot.
18 This option enables the "hush" shell (from Busybox) as command line
19 interpreter, thus enabling powerful command line syntax like
20 if...then...else...fi conditionals or `&&' and '||'
21 constructs ("shell scripts").
23 If disabled, you get the old, much simpler behaviour with a somewhat
24 smaller memory footprint.
26 config CMDLINE_EDITING
27 bool "Enable command line editing"
31 Enable editing and History functions for interactive command line
35 bool "Enable auto complete using TAB"
39 Enable auto completion of commands using TAB.
42 bool "Enable long help messages"
46 Defined when you want long help messages included
47 Do not set this option when short of memory.
53 This string is displayed in the command line to the left of the
56 menu "Autoboot options"
62 This enables the autoboot. See doc/README.autoboot for detail.
65 bool "Stop autobooting via specific input key / string"
68 This option enables stopping (aborting) of the automatic
69 boot feature only by issuing a specific input key or
70 string. If not enabled, any input key will abort the
71 U-Boot automatic booting process and bring the device
72 to the U-Boot prompt for user input.
74 config AUTOBOOT_PROMPT
75 string "Autoboot stop prompt"
76 depends on AUTOBOOT_KEYED
77 default "Autoboot in %d seconds\\n"
79 This string is displayed before the boot delay selected by
80 CONFIG_BOOTDELAY starts. If it is not defined there is no
81 output indicating that autoboot is in progress.
83 Note that this define is used as the (only) argument to a
84 printf() call, so it may contain '%' format specifications,
85 provided that it also includes, sepearated by commas exactly
86 like in a printf statement, the required arguments. It is
87 the responsibility of the user to select only such arguments
88 that are valid in the given context.
90 config AUTOBOOT_ENCRYPTION
91 bool "Enable encryption in autoboot stopping"
92 depends on AUTOBOOT_KEYED
95 config AUTOBOOT_DELAY_STR
96 string "Delay autobooting via specific input key / string"
97 depends on AUTOBOOT_KEYED && !AUTOBOOT_ENCRYPTION
99 This option delays the automatic boot feature by issuing
100 a specific input key or string. If CONFIG_AUTOBOOT_DELAY_STR
101 or the environment variable "bootdelaykey" is specified
102 and this string is received from console input before
103 autoboot starts booting, U-Boot gives a command prompt. The
104 U-Boot prompt will time out if CONFIG_BOOT_RETRY_TIME is
105 used, otherwise it never times out.
107 config AUTOBOOT_STOP_STR
108 string "Stop autobooting via specific input key / string"
109 depends on AUTOBOOT_KEYED && !AUTOBOOT_ENCRYPTION
111 This option enables stopping (aborting) of the automatic
112 boot feature only by issuing a specific input key or
113 string. If CONFIG_AUTOBOOT_STOP_STR or the environment
114 variable "bootstopkey" is specified and this string is
115 received from console input before autoboot starts booting,
116 U-Boot gives a command prompt. The U-Boot prompt never
117 times out, even if CONFIG_BOOT_RETRY_TIME is used.
119 config AUTOBOOT_KEYED_CTRLC
120 bool "Enable Ctrl-C autoboot interruption"
121 depends on AUTOBOOT_KEYED && !AUTOBOOT_ENCRYPTION
124 This option allows for the boot sequence to be interrupted
125 by ctrl-c, in addition to the "bootdelaykey" and "bootstopkey".
126 Setting this variable provides an escape sequence from the
127 limited "password" strings.
129 config AUTOBOOT_STOP_STR_SHA256
130 string "Stop autobooting via SHA256 encrypted password"
131 depends on AUTOBOOT_KEYED && AUTOBOOT_ENCRYPTION
133 This option adds the feature to only stop the autobooting,
134 and therefore boot into the U-Boot prompt, when the input
135 string / password matches a values that is encypted via
136 a SHA256 hash and saved in the environment.
140 source "cmd/fastboot/Kconfig"
160 Print ".config" contents.
162 If this option is enabled, the ".config" file contents are embedded
163 in the U-Boot image and can be printed on the console by the "config"
164 command. This provides information of which options are enabled on
171 Print console devices and information.
176 Print information about available CPUs. This normally shows the
177 number of CPUs, type (e.g. manufacturer, architecture, product or
178 internal name) and clock frequency. Other information may be
179 available depending on the CPU driver.
185 Print GPL license text
201 Run the command stored in the environment "bootcmd", i.e.
202 "bootd" does the same thing as "run bootcmd".
208 Boot an application image from the memory.
213 Boot the Linux zImage
220 Boot an AArch64 Linux Kernel image from memory.
224 depends on EFI_LOADER
227 Boot an EFI image from memory.
229 config CMD_BOOTEFI_HELLO_COMPILE
230 bool "Compile a standard EFI hello world binary for testing"
231 depends on CMD_BOOTEFI && (ARM || X86)
234 This compiles a standard EFI hello world application with U-Boot so
235 that it can be used with the test/py testing framework. This is useful
236 for testing that EFI is working at a basic level, and for bringing
237 up EFI support on a new architecture.
239 No additional space will be required in the resulting U-Boot binary
240 when this option is enabled.
242 config CMD_BOOTEFI_HELLO
243 bool "Allow booting a standard EFI hello world for testing"
244 depends on CMD_BOOTEFI_HELLO_COMPILE
246 This adds a standard EFI hello world application to U-Boot so that
247 it can be used with the 'bootefi hello' command. This is useful
248 for testing that EFI is working at a basic level, and for bringing
249 up EFI support on a new architecture.
251 source lib/efi_selftest/Kconfig
257 Add an ANSI terminal boot menu command.
260 bool "bootelf, bootvx"
263 Boot an ELF/vxWorks image from the memory.
266 bool "Flattened Device Tree utility commands"
270 Do FDT related setup before booting into the Operating System.
276 Start an application at a given address.
282 Run the command in the given environment variable.
288 Print header information for application image.
293 List all images found in flash
299 Extract a part of a multi-image.
304 Poweroff/Shutdown the system
307 bool "spl export - Export boot information for Falcon boot"
310 Falcon mode allows booting directly from SPL into an Operating
311 System such as Linux, thus skipping U-Boot proper. See
312 doc/README.falcon for full information about how to use this
315 config CMD_SPL_NAND_OFS
316 hex "Offset of OS command line args for Falcon-mode NAND boot"
320 This provides the offset of the command line arguments for Linux
321 when booting from NAND in Falcon mode. See doc/README.falcon
322 for full information about how to use this option (and also see
323 board/gateworks/gw_ventana/README for an example).
325 config CMD_SPL_WRITE_SIZE
326 hex "Size of argument area"
330 This provides the size of the command-line argument area in NAND
331 flash used by Falcon-mode boot. See the documentation until CMD_SPL
335 bool "fitImage update command"
337 Implements the 'fitupd' command, which allows to automatically
338 store software updates present on a TFTP server in NOR Flash
340 config CMD_THOR_DOWNLOAD
341 bool "thor - TIZEN 'thor' download"
343 Implements the 'thor' download protocol. This is a way of
344 downloading a software update over USB from an attached host.
345 There is no documentation about this within the U-Boot source code
346 but you should be able to find something on the interwebs.
349 bool "zboot - x86 boot command"
351 With x86 machines it is common to boot a bzImage file which
352 contains both a kernel and a setup.bin file. The latter includes
353 configuration information from the dark ages which x86 boards still
354 need to pick things out of.
356 Consider using FIT in preference to this since it supports directly
357 booting both 32- and 64-bit kernels, as well as secure boot.
358 Documentation is available in doc/uImage.FIT/x86-fit-boot.txt
362 menu "Environment commands"
365 bool "ask for env variable"
367 Ask for environment variable
385 Edit environment variable.
390 Allow for searching environment variables
396 Save all environment variables into the compiled-in persistent
399 config CMD_ENV_EXISTS
403 Check if a variable is defined in the environment for use in
406 config CMD_ENV_CALLBACK
407 bool "env callbacks - print callbacks and their associated variables"
409 Some environment variable have callbacks defined by
410 U_BOOT_ENV_CALLBACK. These are called when the variable changes.
411 For example changing "baudrate" adjust the serial baud rate. This
412 command lists the currently defined callbacks.
415 bool "env flags -print variables that have non-default flags"
417 Some environment variables have special flags that control their
418 behaviour. For example, serial# can only be written once and cannot
419 be deleted. This command shows the variables that have special
424 menu "Memory commands"
429 default n if ARCH_SUNXI
438 Add -v option to verify data against a crc32 checksum.
441 bool "eeprom - EEPROM subsystem"
443 (deprecated, needs conversion to driver model)
444 Provides commands to read and write EEPROM (Electrically Erasable
445 Programmable Read Only Memory) chips that are connected over an
448 config CMD_EEPROM_LAYOUT
449 bool "Enable layout-aware eeprom commands"
450 depends on CMD_EEPROM
452 (deprecated, needs conversion to driver model)
453 When enabled, additional eeprom sub-commands become available.
455 eeprom print - prints the contents of the eeprom in a human-readable
456 way (eeprom layout fields, and data formatted to be fit for human
459 eeprom update - allows user to update eeprom fields by specifying
460 the field name, and providing the new data in a human readable format
461 (same format as displayed by the eeprom print command).
463 Both commands can either auto detect the layout, or be told which
467 __weak int parse_layout_version(char *str)
468 - override to provide your own layout name parsing
469 __weak void __eeprom_layout_assign(struct eeprom_layout *layout,
471 - override to setup the layout metadata based on the version
472 __weak int eeprom_layout_detect(unsigned char *data)
473 - override to provide your own algorithm for detecting layout
476 - contains various printing and updating functions for common
477 types of eeprom fields. Can be used for defining
480 config EEPROM_LAYOUT_HELP_STRING
481 string "Tells user what layout names are supported"
482 depends on CMD_EEPROM_LAYOUT
483 default "<not defined>"
485 Help printed with the LAYOUT VERSIONS part of the 'eeprom'
491 Infinite write loop on address range
498 Compute MD5 checksum.
503 depends on CMD_MD5SUM
505 Add -v option to verify data against an MD5 checksum.
510 Display memory information.
513 bool "md, mm, nm, mw, cp, cmp, base, loop"
518 mm - memory modify (auto-incrementing address)
519 nm - memory modify (constant address)
520 mw - memory write (fill)
523 base - print or set address offset
524 loop - initialize loop on address range
529 Simple RAM read/write test.
534 mdc - memory display cyclic
535 mwc - memory write cyclic
541 Compute SHA1 checksum.
543 config SHA1SUM_VERIFY
545 depends on CMD_SHA1SUM
547 Add -v option to verify data against a SHA1 checksum.
550 bool "strings - display strings in memory"
552 This works similarly to the Unix 'strings' command except that it
553 works with a memory range. String of printable characters found
554 within the range are displayed. The minimum number of characters
555 for a sequence to be considered a string can be provided.
559 menu "Compression commands"
563 default y if CMD_BOOTI
566 Support decompressing an LZMA (Lempel-Ziv-Markov chain algorithm)
571 default n if ARCH_SUNXI
572 default y if CMD_BOOTI
574 Uncompress a zip-compressed memory region.
579 Compress a memory region with zlib deflate method.
583 menu "Device access commands"
586 #depends on FLASH_CFI_DRIVER
589 ARM Ltd reference designs flash partition access
592 bool "clk - Show clock frequencies"
595 Shows clock frequences by calling a sock_clk_dump() hook function.
596 This is depreated in favour of using the CLK uclass and accessing
597 clock values from associated drivers. However currently no command
601 bool "demo - Demonstration commands for driver model"
604 Provides a 'demo' command which can be used to play around with
605 driver model. To use this properly you will need to enable one or
606 both of the demo devices (DM_DEMO_SHAPE and DM_DEMO_SIMPLE).
607 Otherwise you will always get an empty list of devices. The demo
608 devices are defined in the sandbox device tree, so the easiest
609 option is to use sandbox and pass the -d point to sandbox's
616 Enables the command "dfu" which is used to have U-Boot create a DFU
617 class device via USB. This command requires that the "dfu_alt_info"
618 environment variable be set and define the alt settings to expose to
622 bool "dm - Access to driver model information"
626 Provides access to driver model data structures and information,
627 such as a list of devices, list of uclasses and the state of each
628 device (e.g. activated). This is not required for operation, but
629 can be useful to see the state of driver model for debugging or
633 bool "fdcboot - Boot from floppy device"
635 The 'fdtboot' command allows booting an image from a floppy disk.
638 bool "flinfo, erase, protect"
642 flinfo - print FLASH memory information
644 protect - enable or disable FLASH write protection
653 config CMD_FPGA_LOADBP
654 bool "fpga loadbp - load partial bitstream (Xilinx only)"
657 Supports loading an FPGA device from a bitstream buffer containing
660 config CMD_FPGA_LOADFS
661 bool "fpga loadfs - load bitstream from FAT filesystem (Xilinx only)"
664 Supports loading an FPGA device from a FAT filesystem.
666 config CMD_FPGA_LOADMK
667 bool "fpga loadmk - load bitstream from image"
670 Supports loading an FPGA device from a image generated by mkimage.
672 config CMD_FPGA_LOADP
673 bool "fpga loadp - load partial bitstream"
676 Supports loading an FPGA device from a bitstream buffer containing
680 bool "fpgad - dump FPGA registers"
682 (legacy, needs conversion to driver model)
683 Provides a way to dump FPGA registers by calling the board-specific
684 fpga_get_reg() function. This functions similarly to the 'md'
688 bool "fuse - support for the fuse subssystem"
690 (deprecated - needs conversion to driver model)
691 This allows reading, sensing, programming or overriding fuses
692 which control the behaviour of the device. The command uses the
701 bool "GPT (GUID Partition Table) command"
702 select PARTITION_UUIDS
704 select HAVE_BLOCK_DEVICE
707 Enable the 'gpt' command to ready and write GPT style partition
711 bool "GPT Random UUID generation"
714 Enable the generation of partitions with random UUIDs if none
717 config CMD_GPT_RENAME
718 bool "GPT partition renaming commands"
721 Enables the 'gpt' command to interchange names on two GPT
722 partitions via the 'gpt swap' command or to rename single
723 partitions via the 'rename' command.
726 bool "ide - Support for IDE drivers"
729 Provides an 'ide' command which allows accessing the IDE drive,
730 reseting the IDE interface, printing the partition table and
731 geting device info. It also enables the 'diskboot' command which
732 permits booting from an IDE drive.
735 bool "io - Support for performing I/O accesses"
737 Provides an 'iod' command to display I/O space and an 'iow' command
738 to write values to the I/O space. This can be useful for manually
739 checking the state of devices during boot when debugging device
743 bool "iotrace - Support for tracing I/O activity"
745 Provides an 'iotrace' command which supports recording I/O reads and
746 writes in a trace buffer in memory . It also maintains a checksum
747 of the trace records (even if space is exhausted) so that the
748 sequence of I/O accesses can be verified.
750 When debugging drivers it is useful to see what I/O accesses were
751 done and in what order.
753 Even if the individual accesses are of little interest it can be
754 useful to verify that the access pattern is consistent each time
755 an operation is performed. In this case a checksum can be used to
756 characterise the operation of a driver. The checksum can be compared
757 across different runs of the operation to verify that the driver is
760 In particular, when performing major refactoring of the driver, where
761 the access pattern should not change, the checksum provides assurance
762 that the refactoring work has not broken the driver.
764 This works by sneaking into the io.h heder for an architecture and
765 redirecting I/O accesses through iotrace's tracing mechanism.
767 For now no commands are provided to examine the trace buffer. The
768 format is fairly simple, so 'md' is a reasonable substitute.
770 Note: The checksum feature is only useful for I/O regions where the
771 contents do not change outside of software control. Where this is not
772 suitable you can fall back to manually comparing the addresses. It
773 might be useful to enhance tracing to only checksum the accesses and
774 not the data read/written.
783 default n if ARCH_SUNXI
786 Load a binary file over serial line.
790 default n if ARCH_SUNXI
793 Load an S-Record file over serial line
798 MMC memory mapped support.
802 default y if NAND_SUNXI
807 config CMD_NAND_TRIMFFS
808 bool "nand write.trimffs"
809 default y if ARCH_SUNXI
811 Allows one to skip empty pages when flashing something on a NAND.
813 config CMD_NAND_LOCK_UNLOCK
814 bool "nand lock/unlock"
816 NAND locking support.
818 config CMD_NAND_TORTURE
821 NAND torture support.
830 NVM Express device support
833 bool "mmc_spi - Set up MMC SPI device"
835 Provides a way to set up an MMC (Multimedia Card) SPI (Serial
836 Peripheral Interface) device. The device provides a means of
837 accessing an MMC device via SPI using a single data line, limited
838 to 20MHz. It is useful since it reduces the amount of protocol code
842 bool "onenand - access to onenand device"
844 OneNAND is a brand of NAND ('Not AND' gate) flash which provides
845 various useful features. This command allows reading, writing,
846 and erasing blocks. It allso provides a way to show and change
847 bad blocks, and test the device.
851 select PARTITION_UUIDS
852 select HAVE_BLOCK_DEVICE
854 Read and display information about the partition table on
858 bool "pci - Access PCI devices"
860 Provide access to PCI (Peripheral Interconnect Bus), a type of bus
861 used on some devices to allow the CPU to communicate with its
862 peripherals. Sub-commands allow bus enumeration, displaying and
863 changing configuration space and a few other features.
866 bool "pinit - Set up PCMCIA device"
868 Provides a means to initialise a PCMCIA (Personal Computer Memory
869 Card International Association) device. This is an old standard from
870 about 1990. These devices are typically removable memory or network
871 cards using a standard 68-pin connector.
874 bool "read - Read binary data from a partition"
876 Provides low-level access to the data in a partition.
878 config CMD_REMOTEPROC
880 depends on REMOTEPROC
882 Support for Remote Processor control
885 bool "sata - Access SATA subsystem"
888 SATA (Serial Advanced Technology Attachment) is a serial bus
889 standard for connecting to hard drives and other storage devices.
890 This command provides information about attached devices and allows
891 reading, writing and other operations.
893 SATA replaces PATA (originally just ATA), which stands for Parallel AT
894 Attachment, where AT refers to an IBM AT (Advanced Technology)
895 computer released in 1984.
898 bool "saves - Save a file over serial in S-Record format"
900 Provides a way to save a binary file using the Motorola S-Record
901 format over the serial line.
904 bool "scsi - Access to SCSI devices"
907 This provides a 'scsi' command which provides access to SCSI (Small
908 Computer System Interface) devices. The command provides a way to
909 scan the bus, reset the bus, read and write data and get information
913 bool "sdram - Print SDRAM configuration information"
915 Provides information about attached SDRAM. This assumed that the
916 SDRAM has an EEPROM with information that can be read using the
917 I2C bus. This is only available on some boards.
925 bool "sf test - Allow testing of SPI flash"
927 Provides a way to test that SPI flash is working correctly. The
928 test is destructive, in that an area of SPI flash must be provided
929 for the test to use. Performance information is also provided,
930 measuring the performance of reading, writing and erasing in
931 Mbps (Million Bits Per Second). This value should approximately
932 equal the SPI bus speed for a single-bit-wide SPI bus, assuming
933 everything is working properly.
941 bool "tsi148 - Command to access tsi148 device"
943 This provides various sub-commands to initialise and configure the
944 Turndra tsi148 device. See the command help for full details.
947 bool "universe - Command to set up the Turndra Universe controller"
949 This allows setting up the VMEbus provided by this controller.
950 See the command help for full details.
954 select HAVE_BLOCK_DEVICE
960 select USB_FUNCTION_SDP
962 Enables the command "sdp" which is used to have U-Boot emulating the
963 Serial Download Protocol (SDP) via USB.
966 depends on USB_FUNCTION_ROCKUSB
968 Rockusb protocol is widely used by Rockchip SoC based devices. It can
969 read/write info, image to/from devices. This enable rockusb command
970 support to communication with rockusb device. for more detail about
971 this command, please read doc/README.rockusb.
973 config CMD_USB_MASS_STORAGE
974 bool "UMS usb mass storage"
975 select USB_FUNCTION_MASS_STORAGE
977 USB mass storage support
982 menu "Shell scripting commands"
994 Return true/false on integer compare.
1000 Run script from memory
1006 Evaluate boolean and math expressions and store the result in an env
1008 Also supports loading the value at a memory location into a variable.
1009 If CONFIG_REGEX is enabled, setexpr also supports a gsub function.
1013 menu "Network commands"
1018 bool "bootp, tftpboot"
1022 bootp - boot image via network using BOOTP/TFTP protocol
1023 tftpboot - boot image via network using TFTP protocol
1028 TFTP put command, for uploading files to a server
1033 Act as a TFTP server and boot the first received file
1038 Boot image via network using RARP/TFTP protocol
1044 Boot image via network using DHCP/TFTP protocol
1051 Boot image via network using PXE protocol
1057 Boot image via network using NFS protocol.
1062 Enable MII utility commands.
1067 Send ICMP ECHO_REQUEST to network host
1072 Perform CDP network configuration
1077 Synchronize RTC via network
1082 Lookup the IP of a hostname
1084 config CMD_LINK_LOCAL
1087 Acquire a network IP address using the link-local protocol
1092 Allow control of L2 Ethernet switch commands. These are supported
1093 by the vsc9953 Ethernet driver at present. Sub-commands allow
1094 operations such as enabling / disabling a port and
1095 viewing/maintaining the filtering database (FDB)
1101 menu "Misc commands"
1104 bool "Enable 'bmp' command"
1105 depends on LCD || DM_VIDEO || VIDEO
1107 This provides a way to obtain information about a BMP-format iamge
1108 and to display it. BMP (which presumably stands for BitMaP) is a
1109 file format defined by Microsoft which supports images of various
1110 depths, formats and compression methods. Headers on the file
1111 determine the formats used. This command can be used by first loading
1112 the image into RAM, then using this command to look at it or display
1116 bool "Enable board-specific commands"
1118 (deprecated: instead, please define a Kconfig option for each command)
1120 Some boards have board-specific commands which are only enabled
1121 during developemnt and need to be turned off for production. This
1122 option provides a way to control this. The commands that are enabled
1123 vary depending on the board.
1125 config CMD_BKOPS_ENABLE
1126 bool "mmc bkops enable"
1130 Enable command for setting manual background operations handshake
1131 on a eMMC device. The feature is optionally available on eMMC devices
1132 conforming to standard >= 4.41.
1134 config CMD_BLOCK_CACHE
1135 bool "blkcache - control and stats for block cache"
1136 depends on BLOCK_CACHE
1137 default y if BLOCK_CACHE
1139 Enable the blkcache command, which can be used to control the
1140 operation of the cache functions.
1141 This is most useful when fine-tuning the operation of the cache
1142 during development, but also allows the cache to be disabled when
1143 it might hurt performance (e.g. when using the ums command).
1146 bool "icache or dcache"
1148 Enable the "icache" and "dcache" commands
1151 bool "Enable the 'display' command, for character displays"
1153 (this needs porting to driver model)
1154 This enables the 'display' command which allows a string to be
1155 displayed on a simple board-specific display. Implement
1156 display_putc() to use it.
1162 Enable the 'led' command which allows for control of LEDs supported
1163 by the board. The LEDs can be listed with 'led list' and controlled
1164 with led on/off/togle/blink. Any LED drivers can be controlled with
1165 this command, e.g. led_gpio.
1171 Enable the 'date' command for getting/setting the time/date in RTC
1177 Run commands and summarize execution time.
1180 bool "gettime - read elapsed time"
1182 Enable the 'gettime' command which reads the elapsed time since
1183 U-Boot started running. This shows the time in seconds and
1184 milliseconds. See also the 'bootstage' command which provides more
1185 flexibility for boot timing.
1187 # TODO: rename to CMD_SLEEP
1190 default n if ARCH_SUNXI
1193 Delay execution for some time
1198 Access the system timer.
1204 This provides basic access to the U-Boot's sound support. The main
1205 feature is to play a beep.
1207 sound init - set up sound system
1208 sound play - play a sound
1214 This provides access to the QEMU firmware interface. The main
1215 feature is to allow easy loading of files passed to qemu-system
1216 via -kernel / -initrd
1218 source "cmd/mvebu/Kconfig"
1221 bool "terminal - provides a way to attach a serial terminal"
1223 Provides a 'cu'-like serial terminal command. This can be used to
1224 access other serial ports from the system console. The terminal
1225 is very simple with no special processing of characters. As with
1226 cu, you can press ~. (tilde followed by period) to exit.
1229 bool "uuid, guid - generation of unique IDs"
1232 This enables two commands:
1234 uuid - generate random Universally Unique Identifier
1235 guid - generate Globally Unique Identifier based on random UUID
1237 The two commands are very similar except for the endianness of the
1242 source "cmd/ti/Kconfig"
1244 config CMD_BOOTSTAGE
1245 bool "Enable the 'bootstage' command"
1246 depends on BOOTSTAGE
1248 Add a 'bootstage' command which supports printing a report
1249 and un/stashing of bootstage data.
1251 menu "Power commands"
1253 bool "Enable Driver Model PMIC command"
1256 This is the pmic command, based on a driver model pmic's API.
1257 Command features are unchanged:
1258 - list - list pmic devices
1259 - pmic dev <id> - show or [set] operating pmic device (NEW)
1260 - pmic dump - dump registers
1261 - pmic read address - read byte of register at address
1262 - pmic write address - write byte to register at address
1263 The only one change for this command is 'dev' subcommand.
1265 config CMD_REGULATOR
1266 bool "Enable Driver Model REGULATOR command"
1267 depends on DM_REGULATOR
1269 This command is based on driver model regulator's API.
1270 User interface features:
1271 - list - list regulator devices
1272 - regulator dev <id> - show or [set] operating regulator device
1273 - regulator info - print constraints info
1274 - regulator status - print operating status
1275 - regulator value <val] <-f> - print/[set] voltage value [uV]
1276 - regulator current <val> - print/[set] current value [uA]
1277 - regulator mode <id> - print/[set] operating mode id
1278 - regulator enable - enable the regulator output
1279 - regulator disable - disable the regulator output
1281 The '-f' (force) option can be used for set the value which exceeds
1282 the limits, which are found in device-tree and are kept in regulator's
1283 uclass platdata structure.
1287 menu "Security commands"
1289 bool "Enable the 'aes' command"
1292 This provides a means to encrypt and decrypt data using the AES
1293 (Advanced Encryption Standard). This algorithm uses a symetric key
1294 and is widely used as a streaming cipher. Different key lengths are
1295 supported by the algorithm but this command only supports 128 bits
1299 bool "Enable the 'blob' command"
1301 This is used with the Freescale secure boot mechanism.
1303 Freescale's SEC block has built-in Blob Protocol which provides
1304 a method for protecting user-defined data across system power
1305 cycles. SEC block protects data in a data structure called a Blob,
1306 which provides both confidentiality and integrity protection.
1308 Encapsulating data as a blob
1309 Each time that the Blob Protocol is used to protect data, a
1310 different randomly generated key is used to encrypt the data.
1311 This random key is itself encrypted using a key which is derived
1312 from SoC's non-volatile secret key and a 16 bit Key identifier.
1313 The resulting encrypted key along with encrypted data is called a
1314 blob. The non-volatile secure key is available for use only during
1317 During decapsulation, the reverse process is performed to get back
1321 blob enc - encapsulating data as a cryptgraphic blob
1322 blob dec - decapsulating cryptgraphic blob to get the data
1326 blob enc src dst len km
1328 Encapsulate and create blob of data $len bytes long
1329 at address $src and store the result at address $dst.
1330 $km is the 16 byte key modifier is also required for
1331 generation/use as key for cryptographic operation. Key
1332 modifier should be 16 byte long.
1334 blob dec src dst len km
1336 Decapsulate the blob of data at address $src and
1337 store result of $len byte at addr $dst.
1338 $km is the 16 byte key modifier is also required for
1339 generation/use as key for cryptographic operation. Key
1340 modifier should be 16 byte long.
1343 bool "Support 'hash' command"
1346 This provides a way to hash data in memory using various supported
1347 algorithms (such as SHA1, MD5, CRC32). The computed digest can be
1348 saved to memory or to an environment variable. It is also possible
1349 to verify a hash against data in memory.
1355 Add -v option to verify data against a hash.
1358 bool "Enable the 'tpm' command"
1361 This provides a means to talk to a TPM from the command line. A wide
1362 range of commands if provided - see 'tpm help' for details. The
1363 command requires a suitable TPM on your board and the correct driver
1367 bool "Enable the 'tpm test' command"
1370 This provides a a series of tests to confirm that the TPM is working
1371 correctly. The tests cover initialisation, non-volatile RAM, extend,
1372 global lock and checking that timing is within expectations. The
1373 tests pass correctly on Infineon TPMs but may need to be adjusted
1378 menu "Firmware commands"
1380 bool "Enable crosec command"
1384 Enable command-line access to the Chrome OS EC (Embedded
1385 Controller). This provides the 'crosec' command which has
1386 a number of sub-commands for performing EC tasks such as
1387 updating its flash, accessing a small saved context area
1388 and talking to the I2C bus behind the EC (if there is one).
1391 menu "Filesystem commands"
1393 bool "Enable the 'btrsubvol' command"
1396 This enables the 'btrsubvol' command to list subvolumes
1397 of a BTRFS filesystem. There are no special commands for
1398 listing BTRFS directories or loading BTRFS files - this
1399 can be done by the generic 'fs' commands (see CMD_FS_GENERIC)
1400 when BTRFS is enabled (see FS_BTRFS).
1403 bool "Enable the 'cbfs' command"
1406 Define this to enable support for reading from a Coreboot
1407 filesystem. This is a ROM-based filesystem used for accessing files
1408 on systems that use coreboot as the first boot-loader and then load
1409 U-Boot to actually boot the Operating System. Available commands are
1410 cbfsinit, cbfsinfo, cbfsls and cbfsload.
1413 bool "Enable the 'cramfs' command"
1414 depends on FS_CRAMFS
1416 This provides commands for dealing with CRAMFS (Compressed ROM
1417 filesystem). CRAMFS is useful when space is tight since files are
1418 compressed. Two commands are provided:
1420 cramfsls - lists files in a cramfs image
1421 cramfsload - loads a file from a cramfs image
1424 bool "ext2 command support"
1427 Enables EXT2 FS command
1430 bool "ext4 command support"
1433 Enables EXT4 FS command
1435 config CMD_EXT4_WRITE
1437 bool "ext4 write command support"
1440 Enables EXT4 FS write command
1443 bool "FAT command support"
1446 Support for the FAT fs
1448 config CMD_FS_GENERIC
1449 bool "filesystem commands"
1451 Enables filesystem commands (e.g. load, ls) that work for multiple
1455 bool "fsuuid command"
1457 Enables fsuuid command for filesystem UUID.
1460 bool "jffs2 command"
1463 Enables commands to support the JFFS2 (Journalling Flash File System
1464 version 2) filesystem. This enables fsload, ls and fsinfo which
1465 provide the ability to load files, list directories and obtain
1466 filesystem information.
1469 bool "MTD partition support"
1471 MTD partition support
1473 config MTDIDS_DEFAULT
1474 string "Default MTD IDs"
1475 depends on CMD_MTDPARTS || CMD_NAND || CMD_FLASH
1477 Defines a default MTD IDs list for use with MTD partitions in the
1478 Linux MTD command line partitions format.
1480 config MTDPARTS_DEFAULT
1481 string "Default MTD partition scheme"
1482 depends on CMD_MTDPARTS || CMD_NAND || CMD_FLASH
1484 Defines a default MTD partitioning scheme in the Linux MTD command
1485 line partitions format
1487 config CMD_MTDPARTS_SPREAD
1488 bool "Padd partition size to take account of bad blocks"
1489 depends on CMD_MTDPARTS
1491 This enables the 'spread' sub-command of the mtdparts command.
1492 This command will modify the existing mtdparts variable by increasing
1493 the size of the partitions such that 1) each partition's net size is
1494 at least as large as the size specified in the mtdparts variable and
1495 2) each partition starts on a good block.
1498 bool "reiser - Access to reiserfs filesystems"
1500 This provides two commands which operate on a resierfs filesystem,
1501 commonly used some years ago:
1503 reiserls - list files
1504 reiserload - load a file
1507 bool "yaffs2 - Access of YAFFS2 filesystem"
1511 This provides commands for accessing a YAFFS2 filesystem. Yet
1512 Another Flash Filesystem 2 is a filesystem designed specifically
1513 for NAND flash. It incorporates bad-block management and ensures
1514 that device writes are sequential regardless of filesystem
1518 bool "zfs - Access of ZFS filesystem"
1520 This provides commands to accessing a ZFS filesystem, commonly used
1521 on Solaris systems. Two sub-commands are provided:
1523 zfsls - list files in a directory
1524 zfsload - load a file
1526 See doc/README.zfs for more details.
1530 menu "Debug commands"
1535 The bedbug (emBEDded deBUGger) command provides debugging features
1536 for some PowerPC processors. For details please see the
1537 docuemntation in doc/README.beddbug
1540 bool "diag - Board diagnostics"
1542 This command provides access to board diagnostic tests. These are
1543 called Power-on Self Tests (POST). The command allows listing of
1544 available tests and running either all the tests, or specific tests
1548 bool "irq - Show information about interrupts"
1549 depends on !ARM && !MIPS && !SH
1551 This enables two commands:
1553 interrupts - enable or disable interrupts
1554 irqinfo - print device-specific interrupt information
1557 bool "kgdb - Allow debugging of U-Boot with gdb"
1559 This enables a 'kgdb' command which allows gdb to connect to U-Boot
1560 over a serial link for debugging purposes. This allows
1561 single-stepping, inspecting variables, etc. This is supported only
1562 on PowerPC at present.
1565 bool "log - Generation, control and access to logging"
1567 This provides access to logging features. It allows the output of
1568 log data to be controlled to a limited extent (setting up the default
1569 maximum log level for emitting of records). It also provides access
1570 to a command used for testing the log system.
1573 bool "trace - Support tracing of function calls and timing"
1575 Enables a command to control using of function tracing within
1576 U-Boot. This allows recording of call traces including timing
1577 information. The command can write data to memory for exporting
1578 for analsys (e.g. using bootchart). See doc/README.trace for full
1584 tristate "Enable UBI - Unsorted block images commands"
1588 default y if NAND_SUNXI
1590 UBI is a software layer above MTD layer which admits use of LVM-like
1591 logical volumes on top of MTD devices, hides some complexities of
1592 flash chips like wear and bad blocks and provides some other useful
1593 capabilities. Please, consult the MTD web site for more details
1594 (www.linux-mtd.infradead.org). Activate this option if you want
1595 to use U-Boot UBI commands.
1598 tristate "Enable UBIFS - Unsorted block images filesystem commands"
1602 default y if CMD_UBI
1604 UBIFS is a file system for flash devices which works on top of UBI.
projects / u-boot / blob