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.
30 This string is displayed in the command line to the left of the
33 menu "Autoboot options"
39 This enables the autoboot. See doc/README.autoboot for detail.
42 bool "Stop autobooting via specific input key / string"
45 This option enables stopping (aborting) of the automatic
46 boot feature only by issuing a specific input key or
47 string. If not enabled, any input key will abort the
48 U-Boot automatic booting process and bring the device
49 to the U-Boot prompt for user input.
51 config AUTOBOOT_PROMPT
52 string "Autoboot stop prompt"
53 depends on AUTOBOOT_KEYED
54 default "Autoboot in %d seconds\\n"
56 This string is displayed before the boot delay selected by
57 CONFIG_BOOTDELAY starts. If it is not defined there is no
58 output indicating that autoboot is in progress.
60 Note that this define is used as the (only) argument to a
61 printf() call, so it may contain '%' format specifications,
62 provided that it also includes, sepearated by commas exactly
63 like in a printf statement, the required arguments. It is
64 the responsibility of the user to select only such arguments
65 that are valid in the given context.
67 config AUTOBOOT_ENCRYPTION
68 bool "Enable encryption in autoboot stopping"
69 depends on AUTOBOOT_KEYED
72 config AUTOBOOT_DELAY_STR
73 string "Delay autobooting via specific input key / string"
74 depends on AUTOBOOT_KEYED && !AUTOBOOT_ENCRYPTION
76 This option delays the automatic boot feature by issuing
77 a specific input key or string. If CONFIG_AUTOBOOT_DELAY_STR
78 or the environment variable "bootdelaykey" is specified
79 and this string is received from console input before
80 autoboot starts booting, U-Boot gives a command prompt. The
81 U-Boot prompt will time out if CONFIG_BOOT_RETRY_TIME is
82 used, otherwise it never times out.
84 config AUTOBOOT_STOP_STR
85 string "Stop autobooting via specific input key / string"
86 depends on AUTOBOOT_KEYED && !AUTOBOOT_ENCRYPTION
88 This option enables stopping (aborting) of the automatic
89 boot feature only by issuing a specific input key or
90 string. If CONFIG_AUTOBOOT_STOP_STR or the environment
91 variable "bootstopkey" is specified and this string is
92 received from console input before autoboot starts booting,
93 U-Boot gives a command prompt. The U-Boot prompt never
94 times out, even if CONFIG_BOOT_RETRY_TIME is used.
96 config AUTOBOOT_KEYED_CTRLC
97 bool "Enable Ctrl-C autoboot interruption"
98 depends on AUTOBOOT_KEYED && !AUTOBOOT_ENCRYPTION
101 This option allows for the boot sequence to be interrupted
102 by ctrl-c, in addition to the "bootdelaykey" and "bootstopkey".
103 Setting this variable provides an escape sequence from the
104 limited "password" strings.
106 config AUTOBOOT_STOP_STR_SHA256
107 string "Stop autobooting via SHA256 encrypted password"
108 depends on AUTOBOOT_KEYED && AUTOBOOT_ENCRYPTION
110 This option adds the feature to only stop the autobooting,
111 and therefore boot into the U-Boot prompt, when the input
112 string / password matches a values that is encypted via
113 a SHA256 hash and saved in the environment.
117 source "cmd/fastboot/Kconfig"
137 Print ".config" contents.
139 If this option is enabled, the ".config" file contents are embedded
140 in the U-Boot image and can be printed on the console by the "config"
141 command. This provides information of which options are enabled on
148 Print console devices and information.
153 Print information about available CPUs. This normally shows the
154 number of CPUs, type (e.g. manufacturer, architecture, product or
155 internal name) and clock frequency. Other information may be
156 available depending on the CPU driver.
162 Print GPL license text
178 Run the command stored in the environment "bootcmd", i.e.
179 "bootd" does the same thing as "run bootcmd".
185 Boot an application image from the memory.
190 Boot the Linux zImage
197 Boot an AArch64 Linux Kernel image from memory.
201 depends on EFI_LOADER
204 Boot an EFI image from memory.
206 config CMD_BOOTEFI_HELLO_COMPILE
207 bool "Compile a standard EFI hello world binary for testing"
208 depends on CMD_BOOTEFI && (ARM || X86)
211 This compiles a standard EFI hello world application with U-Boot so
212 that it can be used with the test/py testing framework. This is useful
213 for testing that EFI is working at a basic level, and for bringing
214 up EFI support on a new architecture.
216 No additional space will be required in the resulting U-Boot binary
217 when this option is enabled.
219 config CMD_BOOTEFI_HELLO
220 bool "Allow booting a standard EFI hello world for testing"
221 depends on CMD_BOOTEFI_HELLO_COMPILE
223 This adds a standard EFI hello world application to U-Boot so that
224 it can be used with the 'bootefi hello' command. This is useful
225 for testing that EFI is working at a basic level, and for bringing
226 up EFI support on a new architecture.
228 source lib/efi_selftest/Kconfig
234 Add an ANSI terminal boot menu command.
237 bool "bootelf, bootvx"
240 Boot an ELF/vxWorks image from the memory.
243 bool "Flattened Device Tree utility commands"
247 Do FDT related setup before booting into the Operating System.
253 Start an application at a given address.
259 Run the command in the given environment variable.
265 Print header information for application image.
270 List all images found in flash
276 Extract a part of a multi-image.
281 Poweroff/Shutdown the system
284 bool "spl export - Export boot information for Falcon boot"
287 Falcon mode allows booting directly from SPL into an Operating
288 System such as Linux, thus skipping U-Boot proper. See
289 doc/README.falcon for full information about how to use this
292 config CMD_SPL_NAND_OFS
293 hex "Offset of OS command line args for Falcon-mode NAND boot"
297 This provides the offset of the command line arguments for Linux
298 when booting from NAND in Falcon mode. See doc/README.falcon
299 for full information about how to use this option (and also see
300 board/gateworks/gw_ventana/README for an example).
302 config CMD_SPL_WRITE_SIZE
303 hex "Size of argument area"
307 This provides the size of the command-line argument area in NAND
308 flash used by Falcon-mode boot. See the documentation until CMD_SPL
311 config CMD_THOR_DOWNLOAD
312 bool "thor - TIZEN 'thor' download"
314 Implements the 'thor' download protocol. This is a way of
315 downloading a software update over USB from an attached host.
316 There is no documentation about this within the U-Boot source code
317 but you should be able to find something on the interwebs.
320 bool "zboot - x86 boot command"
322 With x86 machines it is common to boot a bzImage file which
323 contains both a kernel and a setup.bin file. The latter includes
324 configuration information from the dark ages which x86 boards still
325 need to pick things out of.
327 Consider using FIT in preference to this since it supports directly
328 booting both 32- and 64-bit kernels, as well as secure boot.
329 Documentation is available in doc/uImage.FIT/x86-fit-boot.txt
333 menu "Environment commands"
336 bool "ask for env variable"
338 Ask for environment variable
356 Edit environment variable.
361 Allow for searching environment variables
367 Save all environment variables into the compiled-in persistent
370 config CMD_ENV_EXISTS
374 Check if a variable is defined in the environment for use in
377 config CMD_ENV_CALLBACK
378 bool "env callbacks - print callbacks and their associated variables"
380 Some environment variable have callbacks defined by
381 U_BOOT_ENV_CALLBACK. These are called when the variable changes.
382 For example changing "baudrate" adjust the serial baud rate. This
383 command lists the currently defined callbacks.
386 bool "env flags -print variables that have non-default flags"
388 Some environment variables have special flags that control their
389 behaviour. For example, serial# can only be written once and cannot
390 be deleted. This command shows the variables that have special
395 menu "Memory commands"
408 Add -v option to verify data against a crc32 checksum.
411 bool "eeprom - EEPROM subsystem"
413 (deprecated, needs conversion to driver model)
414 Provides commands to read and write EEPROM (Electrically Erasable
415 Programmable Read Only Memory) chips that are connected over an
418 config CMD_EEPROM_LAYOUT
419 bool "Enable layout-aware eeprom commands"
420 depends on CMD_EEPROM
422 (deprecated, needs conversion to driver model)
423 When enabled, additional eeprom sub-commands become available.
425 eeprom print - prints the contents of the eeprom in a human-readable
426 way (eeprom layout fields, and data formatted to be fit for human
429 eeprom update - allows user to update eeprom fields by specifying
430 the field name, and providing the new data in a human readable format
431 (same format as displayed by the eeprom print command).
433 Both commands can either auto detect the layout, or be told which
437 __weak int parse_layout_version(char *str)
438 - override to provide your own layout name parsing
439 __weak void __eeprom_layout_assign(struct eeprom_layout *layout,
441 - override to setup the layout metadata based on the version
442 __weak int eeprom_layout_detect(unsigned char *data)
443 - override to provide your own algorithm for detecting layout
446 - contains various printing and updating functions for common
447 types of eeprom fields. Can be used for defining
450 config EEPROM_LAYOUT_HELP_STRING
451 string "Tells user what layout names are supported"
452 depends on CMD_EEPROM_LAYOUT
453 default "<not defined>"
455 Help printed with the LAYOUT VERSIONS part of the 'eeprom'
461 Infinite write loop on address range
468 Compute MD5 checksum.
473 depends on CMD_MD5SUM
475 Add -v option to verify data against an MD5 checksum.
480 Display memory information.
483 bool "md, mm, nm, mw, cp, cmp, base, loop"
488 mm - memory modify (auto-incrementing address)
489 nm - memory modify (constant address)
490 mw - memory write (fill)
493 base - print or set address offset
494 loop - initialize loop on address range
499 Simple RAM read/write test.
504 mdc - memory display cyclic
505 mwc - memory write cyclic
511 Compute SHA1 checksum.
513 config SHA1SUM_VERIFY
515 depends on CMD_SHA1SUM
517 Add -v option to verify data against a SHA1 checksum.
520 bool "strings - display strings in memory"
522 This works similarly to the Unix 'strings' command except that it
523 works with a memory range. String of printable characters found
524 within the range are displayed. The minimum number of characters
525 for a sequence to be considered a string can be provided.
529 menu "Compression commands"
533 default y if CMD_BOOTI
536 Support decompressing an LZMA (Lempel-Ziv-Markov chain algorithm)
541 default y if CMD_BOOTI
543 Uncompress a zip-compressed memory region.
548 Compress a memory region with zlib deflate method.
552 menu "Device access commands"
555 #depends on FLASH_CFI_DRIVER
558 ARM Ltd reference designs flash partition access
561 bool "clk - Show clock frequencies"
564 Shows clock frequences by calling a sock_clk_dump() hook function.
565 This is depreated in favour of using the CLK uclass and accessing
566 clock values from associated drivers. However currently no command
570 bool "demo - Demonstration commands for driver model"
573 Provides a 'demo' command which can be used to play around with
574 driver model. To use this properly you will need to enable one or
575 both of the demo devices (DM_DEMO_SHAPE and DM_DEMO_SIMPLE).
576 Otherwise you will always get an empty list of devices. The demo
577 devices are defined in the sandbox device tree, so the easiest
578 option is to use sandbox and pass the -d point to sandbox's
583 select USB_FUNCTION_DFU
585 Enables the command "dfu" which is used to have U-Boot create a DFU
586 class device via USB. This command requires that the "dfu_alt_info"
587 environment variable be set and define the alt settings to expose to
591 bool "dm - Access to driver model information"
595 Provides access to driver model data structures and information,
596 such as a list of devices, list of uclasses and the state of each
597 device (e.g. activated). This is not required for operation, but
598 can be useful to see the state of driver model for debugging or
602 bool "fdcboot - Boot from floppy device"
604 The 'fdtboot' command allows booting an image from a floppy disk.
607 bool "flinfo, erase, protect"
611 flinfo - print FLASH memory information
613 protect - enable or disable FLASH write protection
621 config CMD_FPGA_LOADBP
622 bool "fpga loadbp - load partial bitstream (Xilinx only)"
625 Supports loading an FPGA device from a bitstream buffer containing
628 config CMD_FPGA_LOADFS
629 bool "fpga loadfs - load bitstream from FAT filesystem (Xilinx only)"
632 Supports loading an FPGA device from a FAT filesystem.
634 config CMD_FPGA_LOADMK
635 bool "fpga loadmk - load bitstream from image"
638 Supports loading an FPGA device from a image generated by mkimage.
640 config CMD_FPGA_LOADP
641 bool "fpga loadp - load partial bitstream"
644 Supports loading an FPGA device from a bitstream buffer containing
648 bool "fpgad - dump FPGA registers"
650 (legacy, needs conversion to driver model)
651 Provides a way to dump FPGA registers by calling the board-specific
652 fpga_get_reg() function. This functions similarly to the 'md'
656 bool "fuse - support for the fuse subssystem"
658 (deprecated - needs conversion to driver model)
659 This allows reading, sensing, programming or overriding fuses
660 which control the behaviour of the device. The command uses the
669 bool "GPT (GUID Partition Table) command"
670 select PARTITION_UUIDS
674 Enable the 'gpt' command to ready and write GPT style partition
678 bool "GPT Random UUID generation"
680 Enable the generation of partitions with random UUIDs if none
683 config CMD_GPT_RENAME
684 bool "GPT partition renaming commands"
687 Enables the 'gpt' command to interchange names on two GPT
688 partitions via the 'gpt swap' command or to rename single
689 partitions via the 'rename' command.
692 bool "ide - Support for IDE drivers"
695 Provides an 'ide' command which allows accessing the IDE drive,
696 reseting the IDE interface, printing the partition table and
697 geting device info. It also enables the 'diskboot' command which
698 permits booting from an IDE drive.
701 bool "io - Support for performing I/O accesses"
703 Provides an 'iod' command to display I/O space and an 'iow' command
704 to write values to the I/O space. This can be useful for manually
705 checking the state of devices during boot when debugging device
709 bool "iotrace - Support for tracing I/O activity"
711 Provides an 'iotrace' command which supports recording I/O reads and
712 writes in a trace buffer in memory . It also maintains a checksum
713 of the trace records (even if space is exhausted) so that the
714 sequence of I/O accesses can be verified.
716 When debugging drivers it is useful to see what I/O accesses were
717 done and in what order.
719 Even if the individual accesses are of little interest it can be
720 useful to verify that the access pattern is consistent each time
721 an operation is performed. In this case a checksum can be used to
722 characterise the operation of a driver. The checksum can be compared
723 across different runs of the operation to verify that the driver is
726 In particular, when performing major refactoring of the driver, where
727 the access pattern should not change, the checksum provides assurance
728 that the refactoring work has not broken the driver.
730 This works by sneaking into the io.h heder for an architecture and
731 redirecting I/O accesses through iotrace's tracing mechanism.
733 For now no commands are provided to examine the trace buffer. The
734 format is fairly simple, so 'md' is a reasonable substitute.
736 Note: The checksum feature is only useful for I/O regions where the
737 contents do not change outside of software control. Where this is not
738 suitable you can fall back to manually comparing the addresses. It
739 might be useful to enhance tracing to only checksum the accesses and
740 not the data read/written.
751 Load a binary file over serial line.
757 Load an S-Record file over serial line
762 MMC memory mapped support.
766 default y if NAND_SUNXI
771 config CMD_NAND_TRIMFFS
772 bool "nand write.trimffs"
773 default y if ARCH_SUNXI
775 Allows one to skip empty pages when flashing something on a NAND.
777 config CMD_NAND_LOCK_UNLOCK
778 bool "nand lock/unlock"
780 NAND locking support.
782 config CMD_NAND_TORTURE
785 NAND torture support.
794 NVM Express device support
797 bool "mmc_spi - Set up MMC SPI device"
799 Provides a way to set up an MMC (Multimedia Card) SPI (Serial
800 Peripheral Interface) device. The device provides a means of
801 accessing an MMC device via SPI using a single data line, limited
802 to 20MHz. It is useful since it reduces the amount of protocol code
806 bool "onenand - access to onenand device"
808 OneNAND is a brand of NAND ('Not AND' gate) flash which provides
809 various useful features. This command allows reading, writing,
810 and erasing blocks. It allso provides a way to show and change
811 bad blocks, and test the device.
815 select PARTITION_UUIDS
817 Read and display information about the partition table on
821 bool "pci - Access PCI devices"
823 Provide access to PCI (Peripheral Interconnect Bus), a type of bus
824 used on some devices to allow the CPU to communicate with its
825 peripherals. Sub-commands allow bus enumeration, displaying and
826 changing configuration space and a few other features.
829 bool "pinit - Set up PCMCIA device"
831 Provides a means to initialise a PCMCIA (Personal Computer Memory
832 Card International Association) device. This is an old standard from
833 about 1990. These devices are typically removable memory or network
834 cards using a standard 68-pin connector.
837 bool "read - Read binary data from a partition"
839 Provides low-level access to the data in a partition.
841 config CMD_REMOTEPROC
843 depends on REMOTEPROC
845 Support for Remote Processor control
848 bool "sata - Access SATA subsystem"
851 SATA (Serial Advanced Technology Attachment) is a serial bus
852 standard for connecting to hard drives and other storage devices.
853 This command provides information about attached devices and allows
854 reading, writing and other operations.
856 SATA replaces PATA (originally just ATA), which stands for Parallel AT
857 Attachment, where AT refers to an IBM AT (Advanced Technology)
858 computer released in 1984.
861 bool "saves - Save a file over serial in S-Record format"
863 Provides a way to save a binary file using the Motorola S-Record
864 format over the serial line.
867 bool "sdram - Print SDRAM configuration information"
869 Provides information about attached SDRAM. This assumed that the
870 SDRAM has an EEPROM with information that can be read using the
871 I2C bus. This is only available on some boards.
879 bool "sf test - Allow testing of SPI flash"
881 Provides a way to test that SPI flash is working correctly. The
882 test is destructive, in that an area of SPI flash must be provided
883 for the test to use. Performance information is also provided,
884 measuring the performance of reading, writing and erasing in
885 Mbps (Million Bits Per Second). This value should approximately
886 equal the SPI bus speed for a single-bit-wide SPI bus, assuming
887 everything is working properly.
895 bool "tsi148 - Command to access tsi148 device"
897 This provides various sub-commands to initialise and configure the
898 Turndra tsi148 device. See the command help for full details.
901 bool "universe - Command to set up the Turndra Universe controller"
903 This allows setting up the VMEbus provided by this controller.
904 See the command help for full details.
913 select USB_FUNCTION_SDP
915 Enables the command "sdp" which is used to have U-Boot emulating the
916 Serial Download Protocol (SDP) via USB.
918 config CMD_USB_MASS_STORAGE
919 bool "UMS usb mass storage"
921 USB mass storage support
926 menu "Shell scripting commands"
938 Return true/false on integer compare.
944 Run script from memory
950 Evaluate boolean and math expressions and store the result in an env
952 Also supports loading the value at a memory location into a variable.
953 If CONFIG_REGEX is enabled, setexpr also supports a gsub function.
957 menu "Network commands"
960 bool "bootp, tftpboot"
965 bootp - boot image via network using BOOTP/TFTP protocol
966 tftpboot - boot image via network using TFTP protocol
971 TFTP put command, for uploading files to a server
976 Act as a TFTP server and boot the first received file
981 Boot image via network using RARP/TFTP protocol
986 Boot image via network using DHCP/TFTP protocol
992 Boot image via network using PXE protocol
998 Boot image via network using NFS protocol.
1003 Enable MII utility commands.
1008 Send ICMP ECHO_REQUEST to network host
1013 Perform CDP network configuration
1018 Synchronize RTC via network
1023 Lookup the IP of a hostname
1025 config CMD_LINK_LOCAL
1028 Acquire a network IP address using the link-local protocol
1033 Allow control of L2 Ethernet switch commands. These are supported
1034 by the vsc9953 Ethernet driver at present. Sub-commands allow
1035 operations such as enabling / disabling a port and
1036 viewing/maintaining the filtering database (FDB)
1040 menu "Misc commands"
1043 bool "Enable 'bmp' command"
1044 depends on LCD || DM_VIDEO || VIDEO
1046 This provides a way to obtain information about a BMP-format iamge
1047 and to display it. BMP (which presumably stands for BitMaP) is a
1048 file format defined by Microsoft which supports images of various
1049 depths, formats and compression methods. Headers on the file
1050 determine the formats used. This command can be used by first loading
1051 the image into RAM, then using this command to look at it or display
1055 bool "Enable board-specific commands"
1057 (deprecated: instead, please define a Kconfig option for each command)
1059 Some boards have board-specific commands which are only enabled
1060 during developemnt and need to be turned off for production. This
1061 option provides a way to control this. The commands that are enabled
1062 vary depending on the board.
1064 config CMD_BKOPS_ENABLE
1065 bool "mmc bkops enable"
1069 Enable command for setting manual background operations handshake
1070 on a eMMC device. The feature is optionally available on eMMC devices
1071 conforming to standard >= 4.41.
1073 config CMD_BLOCK_CACHE
1074 bool "blkcache - control and stats for block cache"
1075 depends on BLOCK_CACHE
1076 default y if BLOCK_CACHE
1078 Enable the blkcache command, which can be used to control the
1079 operation of the cache functions.
1080 This is most useful when fine-tuning the operation of the cache
1081 during development, but also allows the cache to be disabled when
1082 it might hurt performance (e.g. when using the ums command).
1085 bool "icache or dcache"
1087 Enable the "icache" and "dcache" commands
1090 bool "Enable the 'display' command, for character displays"
1092 (this needs porting to driver model)
1093 This enables the 'display' command which allows a string to be
1094 displayed on a simple board-specific display. Implement
1095 display_putc() to use it.
1101 Enable the 'led' command which allows for control of LEDs supported
1102 by the board. The LEDs can be listed with 'led list' and controlled
1103 with led on/off/togle/blink. Any LED drivers can be controlled with
1104 this command, e.g. led_gpio.
1110 Enable the 'date' command for getting/setting the time/date in RTC
1116 Run commands and summarize execution time.
1119 bool "gettime - read elapsed time"
1121 Enable the 'gettime' command which reads the elapsed time since
1122 U-Boot started running. This shows the time in seconds and
1123 milliseconds. See also the 'bootstage' command which provides more
1124 flexibility for boot timing.
1126 # TODO: rename to CMD_SLEEP
1131 Delay execution for some time
1136 Access the system timer.
1142 This provides basic access to the U-Boot's sound support. The main
1143 feature is to play a beep.
1145 sound init - set up sound system
1146 sound play - play a sound
1152 This provides access to the QEMU firmware interface. The main
1153 feature is to allow easy loading of files passed to qemu-system
1154 via -kernel / -initrd
1156 source "cmd/mvebu/Kconfig"
1159 bool "terminal - provides a way to attach a serial terminal"
1161 Provides a 'cu'-like serial terminal command. This can be used to
1162 access other serial ports from the system console. The terminal
1163 is very simple with no special processing of characters. As with
1164 cu, you can press ~. (tilde followed by period) to exit.
1167 bool "uuid, guid - generation of unique IDs"
1169 This enables two commands:
1171 uuid - generate random Universally Unique Identifier
1172 guid - generate Globally Unique Identifier based on random UUID
1174 The two commands are very similar except for the endianness of the
1179 config CMD_BOOTSTAGE
1180 bool "Enable the 'bootstage' command"
1181 depends on BOOTSTAGE
1183 Add a 'bootstage' command which supports printing a report
1184 and un/stashing of bootstage data.
1186 menu "Power commands"
1188 bool "Enable Driver Model PMIC command"
1191 This is the pmic command, based on a driver model pmic's API.
1192 Command features are unchanged:
1193 - list - list pmic devices
1194 - pmic dev <id> - show or [set] operating pmic device (NEW)
1195 - pmic dump - dump registers
1196 - pmic read address - read byte of register at address
1197 - pmic write address - write byte to register at address
1198 The only one change for this command is 'dev' subcommand.
1200 config CMD_REGULATOR
1201 bool "Enable Driver Model REGULATOR command"
1202 depends on DM_REGULATOR
1204 This command is based on driver model regulator's API.
1205 User interface features:
1206 - list - list regulator devices
1207 - regulator dev <id> - show or [set] operating regulator device
1208 - regulator info - print constraints info
1209 - regulator status - print operating status
1210 - regulator value <val] <-f> - print/[set] voltage value [uV]
1211 - regulator current <val> - print/[set] current value [uA]
1212 - regulator mode <id> - print/[set] operating mode id
1213 - regulator enable - enable the regulator output
1214 - regulator disable - disable the regulator output
1216 The '-f' (force) option can be used for set the value which exceeds
1217 the limits, which are found in device-tree and are kept in regulator's
1218 uclass platdata structure.
1222 menu "Security commands"
1224 bool "Enable the 'aes' command"
1227 This provides a means to encrypt and decrypt data using the AES
1228 (Advanced Encryption Standard). This algorithm uses a symetric key
1229 and is widely used as a streaming cipher. Different key lengths are
1230 supported by the algorithm but this command only supports 128 bits
1234 bool "Enable the 'blob' command"
1236 This is used with the Freescale secure boot mechanism.
1238 Freescale's SEC block has built-in Blob Protocol which provides
1239 a method for protecting user-defined data across system power
1240 cycles. SEC block protects data in a data structure called a Blob,
1241 which provides both confidentiality and integrity protection.
1243 Encapsulating data as a blob
1244 Each time that the Blob Protocol is used to protect data, a
1245 different randomly generated key is used to encrypt the data.
1246 This random key is itself encrypted using a key which is derived
1247 from SoC's non-volatile secret key and a 16 bit Key identifier.
1248 The resulting encrypted key along with encrypted data is called a
1249 blob. The non-volatile secure key is available for use only during
1252 During decapsulation, the reverse process is performed to get back
1256 blob enc - encapsulating data as a cryptgraphic blob
1257 blob dec - decapsulating cryptgraphic blob to get the data
1261 blob enc src dst len km
1263 Encapsulate and create blob of data $len bytes long
1264 at address $src and store the result at address $dst.
1265 $km is the 16 byte key modifier is also required for
1266 generation/use as key for cryptographic operation. Key
1267 modifier should be 16 byte long.
1269 blob dec src dst len km
1271 Decapsulate the blob of data at address $src and
1272 store result of $len byte at addr $dst.
1273 $km is the 16 byte key modifier is also required for
1274 generation/use as key for cryptographic operation. Key
1275 modifier should be 16 byte long.
1278 bool "Support 'hash' command"
1281 This provides a way to hash data in memory using various supported
1282 algorithms (such as SHA1, MD5, CRC32). The computed digest can be
1283 saved to memory or to an environment variable. It is also possible
1284 to verify a hash against data in memory.
1290 Add -v option to verify data against a hash.
1293 bool "Enable the 'tpm' command"
1296 This provides a means to talk to a TPM from the command line. A wide
1297 range of commands if provided - see 'tpm help' for details. The
1298 command requires a suitable TPM on your board and the correct driver
1302 bool "Enable the 'tpm test' command"
1305 This provides a a series of tests to confirm that the TPM is working
1306 correctly. The tests cover initialisation, non-volatile RAM, extend,
1307 global lock and checking that timing is within expectations. The
1308 tests pass correctly on Infineon TPMs but may need to be adjusted
1313 menu "Firmware commands"
1315 bool "Enable crosec command"
1319 Enable command-line access to the Chrome OS EC (Embedded
1320 Controller). This provides the 'crosec' command which has
1321 a number of sub-commands for performing EC tasks such as
1322 updating its flash, accessing a small saved context area
1323 and talking to the I2C bus behind the EC (if there is one).
1326 menu "Filesystem commands"
1328 bool "Enable the 'btrsubvol' command"
1331 This enables the 'btrsubvol' command to list subvolumes
1332 of a BTRFS filesystem. There are no special commands for
1333 listing BTRFS directories or loading BTRFS files - this
1334 can be done by the generic 'fs' commands (see CMD_FS_GENERIC)
1335 when BTRFS is enabled (see FS_BTRFS).
1338 bool "Enable the 'cbfs' command"
1341 Define this to enable support for reading from a Coreboot
1342 filesystem. This is a ROM-based filesystem used for accessing files
1343 on systems that use coreboot as the first boot-loader and then load
1344 U-Boot to actually boot the Operating System. Available commands are
1345 cbfsinit, cbfsinfo, cbfsls and cbfsload.
1348 bool "Enable the 'cramfs' command"
1349 depends on FS_CRAMFS
1351 This provides commands for dealing with CRAMFS (Compressed ROM
1352 filesystem). CRAMFS is useful when space is tight since files are
1353 compressed. Two commands are provided:
1355 cramfsls - lists files in a cramfs image
1356 cramfsload - loads a file from a cramfs image
1359 bool "ext2 command support"
1361 Enables EXT2 FS command
1364 bool "ext4 command support"
1366 Enables EXT4 FS command
1368 config CMD_EXT4_WRITE
1370 bool "ext4 write command support"
1372 Enables EXT4 FS write command
1375 bool "FAT command support"
1378 Support for the FAT fs
1380 config CMD_FS_GENERIC
1381 bool "filesystem commands"
1383 Enables filesystem commands (e.g. load, ls) that work for multiple
1387 bool "fsuuid command"
1389 Enables fsuuid command for filesystem UUID.
1392 bool "jffs2 command"
1395 Enables commands to support the JFFS2 (Journalling Flash File System
1396 version 2) filesystem. This enables fsload, ls and fsinfo which
1397 provide the ability to load files, list directories and obtain
1398 filesystem information.
1401 bool "MTD partition support"
1403 MTD partition support
1405 config MTDIDS_DEFAULT
1406 string "Default MTD IDs"
1407 depends on CMD_MTDPARTS
1409 Defines a default MTD ID
1411 config MTDPARTS_DEFAULT
1412 string "Default MTD partition scheme"
1413 depends on CMD_MTDPARTS
1415 Defines a default MTD partitioning scheme in the Linux MTD command
1416 line partitions format
1418 config CMD_MTDPARTS_SPREAD
1419 bool "Padd partition size to take account of bad blocks"
1420 depends on CMD_MTDPARTS
1422 This enables the 'spread' sub-command of the mtdparts command.
1423 This command will modify the existing mtdparts variable by increasing
1424 the size of the partitions such that 1) each partition's net size is
1425 at least as large as the size specified in the mtdparts variable and
1426 2) each partition starts on a good block.
1429 bool "reiser - Access to reiserfs filesystems"
1431 This provides two commands which operate on a resierfs filesystem,
1432 commonly used some years ago:
1434 reiserls - list files
1435 reiserload - load a file
1438 bool "scsi - Access to SCSI devices"
1441 This provides a 'scsi' command which provides access to SCSI (Small
1442 Computer System Interface) devices. The command provides a way to
1443 scan the bus, reset the bus, read and write data and get information
1447 bool "yaffs2 - Access of YAFFS2 filesystem"
1451 This provides commands for accessing a YAFFS2 filesystem. Yet
1452 Another Flash Filesystem 2 is a filesystem designed specifically
1453 for NAND flash. It incorporates bad-block management and ensures
1454 that device writes are sequential regardless of filesystem
1458 bool "zfs - Access of ZFS filesystem"
1460 This provides commands to accessing a ZFS filesystem, commonly used
1461 on Solaris systems. Two sub-commands are provided:
1463 zfsls - list files in a directory
1464 zfsload - load a file
1466 See doc/README.zfs for more details.
1470 menu "Debug commands"
1475 The bedbug (emBEDded deBUGger) command provides debugging features
1476 for some PowerPC processors. For details please see the
1477 docuemntation in doc/README.beddbug
1480 bool "diag - Board diagnostics"
1482 This command provides access to board diagnostic tests. These are
1483 called Power-on Self Tests (POST). The command allows listing of
1484 available tests and running either all the tests, or specific tests
1488 bool "irq - Show information about interrupts"
1489 depends on !ARM && !MIPS && !SH
1491 This enables two commands:
1493 interrupts - enable or disable interrupts
1494 irqinfo - print device-specific interrupt information
1497 bool "kgdb - Allow debugging of U-Boot with gdb"
1499 This enables a 'kgdb' command which allows gdb to connect to U-Boot
1500 over a serial link for debugging purposes. This allows
1501 single-stepping, inspecting variables, etc. This is supported only
1502 on PowerPC at present.
1505 bool "trace - Support tracing of function calls and timing"
1507 Enables a command to control using of function tracing within
1508 U-Boot. This allows recording of call traces including timing
1509 information. The command can write data to memory for exporting
1510 for analsys (e.g. using bootchart). See doc/README.trace for full
1516 tristate "Enable UBI - Unsorted block images commands"
1520 default y if NAND_SUNXI
1522 UBI is a software layer above MTD layer which admits use of LVM-like
1523 logical volumes on top of MTD devices, hides some complexities of
1524 flash chips like wear and bad blocks and provides some other useful
1525 capabilities. Please, consult the MTD web site for more details
1526 (www.linux-mtd.infradead.org). Activate this option if you want
1527 to use U-Boot UBI commands.
1530 tristate "Enable UBIFS - Unsorted block images filesystem commands"
1534 default y if CMD_UBI
1536 UBIFS is a file system for flash devices which works on top of UBI.
projects / people / ms / u-boot.git / blob