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.
158 Print ".config" contents.
160 If this option is enabled, the ".config" file contents are embedded
161 in the U-Boot image and can be printed on the console by the "config"
162 command. This provides information of which options are enabled on
169 Print console devices and information.
174 Print information about available CPUs. This normally shows the
175 number of CPUs, type (e.g. manufacturer, architecture, product or
176 internal name) and clock frequency. Other information may be
177 available depending on the CPU driver.
183 Print GPL license text
199 Run the command stored in the environment "bootcmd", i.e.
200 "bootd" does the same thing as "run bootcmd".
206 Boot an application image from the memory.
211 Boot the Linux zImage
218 Boot an AArch64 Linux Kernel image from memory.
222 depends on EFI_LOADER
225 Boot an EFI image from memory.
227 config CMD_BOOTEFI_HELLO_COMPILE
228 bool "Compile a standard EFI hello world binary for testing"
229 depends on CMD_BOOTEFI && (ARM || X86 || RISCV)
232 This compiles a standard EFI hello world application with U-Boot so
233 that it can be used with the test/py testing framework. This is useful
234 for testing that EFI is working at a basic level, and for bringing
235 up EFI support on a new architecture.
237 No additional space will be required in the resulting U-Boot binary
238 when this option is enabled.
240 config CMD_BOOTEFI_HELLO
241 bool "Allow booting a standard EFI hello world for testing"
242 depends on CMD_BOOTEFI_HELLO_COMPILE
244 This adds a standard EFI hello world application to U-Boot so that
245 it can be used with the 'bootefi hello' command. This is useful
246 for testing that EFI is working at a basic level, and for bringing
247 up EFI support on a new architecture.
249 source lib/efi_selftest/Kconfig
255 Add an ANSI terminal boot menu command.
258 bool "bootelf, bootvx"
261 Boot an ELF/vxWorks image from the memory.
264 bool "Flattened Device Tree utility commands"
268 Do FDT related setup before booting into the Operating System.
274 Start an application at a given address.
280 Run the command in the given environment variable.
286 Print header information for application image.
291 List all images found in flash
297 Extract a part of a multi-image.
302 Poweroff/Shutdown the system
305 bool "spl export - Export boot information for Falcon boot"
308 Falcon mode allows booting directly from SPL into an Operating
309 System such as Linux, thus skipping U-Boot proper. See
310 doc/README.falcon for full information about how to use this
313 config CMD_SPL_NAND_OFS
314 hex "Offset of OS command line args for Falcon-mode NAND boot"
318 This provides the offset of the command line arguments for Linux
319 when booting from NAND in Falcon mode. See doc/README.falcon
320 for full information about how to use this option (and also see
321 board/gateworks/gw_ventana/README for an example).
323 config CMD_SPL_WRITE_SIZE
324 hex "Size of argument area"
328 This provides the size of the command-line argument area in NAND
329 flash used by Falcon-mode boot. See the documentation until CMD_SPL
333 bool "fitImage update command"
335 Implements the 'fitupd' command, which allows to automatically
336 store software updates present on a TFTP server in NOR Flash
338 config CMD_THOR_DOWNLOAD
339 bool "thor - TIZEN 'thor' download"
341 Implements the 'thor' download protocol. This is a way of
342 downloading a software update over USB from an attached host.
343 There is no documentation about this within the U-Boot source code
344 but you should be able to find something on the interwebs.
347 bool "zboot - x86 boot command"
349 With x86 machines it is common to boot a bzImage file which
350 contains both a kernel and a setup.bin file. The latter includes
351 configuration information from the dark ages which x86 boards still
352 need to pick things out of.
354 Consider using FIT in preference to this since it supports directly
355 booting both 32- and 64-bit kernels, as well as secure boot.
356 Documentation is available in doc/uImage.FIT/x86-fit-boot.txt
360 menu "Environment commands"
363 bool "ask for env variable"
365 Ask for environment variable
383 Edit environment variable.
388 Allow for searching environment variables
394 Save all environment variables into the compiled-in persistent
397 config CMD_ENV_EXISTS
401 Check if a variable is defined in the environment for use in
404 config CMD_ENV_CALLBACK
405 bool "env callbacks - print callbacks and their associated variables"
407 Some environment variable have callbacks defined by
408 U_BOOT_ENV_CALLBACK. These are called when the variable changes.
409 For example changing "baudrate" adjust the serial baud rate. This
410 command lists the currently defined callbacks.
413 bool "env flags -print variables that have non-default flags"
415 Some environment variables have special flags that control their
416 behaviour. For example, serial# can only be written once and cannot
417 be deleted. This command shows the variables that have special
422 menu "Memory commands"
427 Compute binary operations (xor, or, and) of byte arrays of arbitrary
428 size from memory and store the result in memory or the environment.
441 Add -v option to verify data against a crc32 checksum.
444 bool "eeprom - EEPROM subsystem"
446 (deprecated, needs conversion to driver model)
447 Provides commands to read and write EEPROM (Electrically Erasable
448 Programmable Read Only Memory) chips that are connected over an
451 config CMD_EEPROM_LAYOUT
452 bool "Enable layout-aware eeprom commands"
453 depends on CMD_EEPROM
455 (deprecated, needs conversion to driver model)
456 When enabled, additional eeprom sub-commands become available.
458 eeprom print - prints the contents of the eeprom in a human-readable
459 way (eeprom layout fields, and data formatted to be fit for human
462 eeprom update - allows user to update eeprom fields by specifying
463 the field name, and providing the new data in a human readable format
464 (same format as displayed by the eeprom print command).
466 Both commands can either auto detect the layout, or be told which
470 __weak int parse_layout_version(char *str)
471 - override to provide your own layout name parsing
472 __weak void __eeprom_layout_assign(struct eeprom_layout *layout,
474 - override to setup the layout metadata based on the version
475 __weak int eeprom_layout_detect(unsigned char *data)
476 - override to provide your own algorithm for detecting layout
479 - contains various printing and updating functions for common
480 types of eeprom fields. Can be used for defining
483 config EEPROM_LAYOUT_HELP_STRING
484 string "Tells user what layout names are supported"
485 depends on CMD_EEPROM_LAYOUT
486 default "<not defined>"
488 Help printed with the LAYOUT VERSIONS part of the 'eeprom'
494 Infinite write loop on address range
501 Compute MD5 checksum.
506 depends on CMD_MD5SUM
508 Add -v option to verify data against an MD5 checksum.
513 Display memory information.
516 bool "md, mm, nm, mw, cp, cmp, base, loop"
521 mm - memory modify (auto-incrementing address)
522 nm - memory modify (constant address)
523 mw - memory write (fill)
526 base - print or set address offset
527 loop - initialize loop on address range
532 Simple RAM read/write test.
536 config SYS_ALT_MEMTEST
537 bool "Alternative test"
539 Use a more complete alternative memory test.
546 mdc - memory display cyclic
547 mwc - memory write cyclic
553 Compute SHA1 checksum.
555 config SHA1SUM_VERIFY
557 depends on CMD_SHA1SUM
559 Add -v option to verify data against a SHA1 checksum.
562 bool "strings - display strings in memory"
564 This works similarly to the Unix 'strings' command except that it
565 works with a memory range. String of printable characters found
566 within the range are displayed. The minimum number of characters
567 for a sequence to be considered a string can be provided.
571 menu "Compression commands"
575 default y if CMD_BOOTI
578 Support decompressing an LZMA (Lempel-Ziv-Markov chain algorithm)
583 default y if CMD_BOOTI
585 Uncompress a zip-compressed memory region.
590 Compress a memory region with zlib deflate method.
594 menu "Device access commands"
597 #depends on FLASH_CFI_DRIVER
600 ARM Ltd reference designs flash partition access
603 bool "adc - Access Analog to Digital Converters info and data"
607 Shows ADC device info and permit printing one-shot analog converted
608 data from a named Analog to Digital Converter.
611 bool "clk - Show clock frequencies"
614 Shows clock frequences by calling a sock_clk_dump() hook function.
615 This is depreated in favour of using the CLK uclass and accessing
616 clock values from associated drivers. However currently no command
620 bool "demo - Demonstration commands for driver model"
623 Provides a 'demo' command which can be used to play around with
624 driver model. To use this properly you will need to enable one or
625 both of the demo devices (DM_DEMO_SHAPE and DM_DEMO_SIMPLE).
626 Otherwise you will always get an empty list of devices. The demo
627 devices are defined in the sandbox device tree, so the easiest
628 option is to use sandbox and pass the -d point to sandbox's
635 Enables the command "dfu" which is used to have U-Boot create a DFU
636 class device via USB. This command requires that the "dfu_alt_info"
637 environment variable be set and define the alt settings to expose to
641 bool "dm - Access to driver model information"
645 Provides access to driver model data structures and information,
646 such as a list of devices, list of uclasses and the state of each
647 device (e.g. activated). This is not required for operation, but
648 can be useful to see the state of driver model for debugging or
652 bool "fastboot - Android fastboot support"
655 This enables the command "fastboot" which enables the Android
656 fastboot mode for the platform. Fastboot is a protocol for
657 downloading images, flashing and device control used on
658 Android devices. Fastboot requires either the network stack
659 enabled or support for acting as a USB device.
661 See doc/README.android-fastboot for more information.
664 bool "fdcboot - Boot from floppy device"
666 The 'fdtboot' command allows booting an image from a floppy disk.
669 bool "flinfo, erase, protect"
673 flinfo - print FLASH memory information
675 protect - enable or disable FLASH write protection
684 config CMD_FPGA_LOADBP
685 bool "fpga loadbp - load partial bitstream (Xilinx only)"
688 Supports loading an FPGA device from a bitstream buffer containing
691 config CMD_FPGA_LOADFS
692 bool "fpga loadfs - load bitstream from FAT filesystem (Xilinx only)"
695 Supports loading an FPGA device from a FAT filesystem.
697 config CMD_FPGA_LOADMK
698 bool "fpga loadmk - load bitstream from image"
701 Supports loading an FPGA device from a image generated by mkimage.
703 config CMD_FPGA_LOADP
704 bool "fpga loadp - load partial bitstream"
707 Supports loading an FPGA device from a bitstream buffer containing
710 config CMD_FPGA_LOAD_SECURE
711 bool "fpga loads - loads secure bitstreams (Xilinx only)"
714 Enables the fpga loads command which is used to load secure
715 (authenticated or encrypted or both) bitstreams on to FPGA.
718 bool "fpgad - dump FPGA registers"
720 (legacy, needs conversion to driver model)
721 Provides a way to dump FPGA registers by calling the board-specific
722 fpga_get_reg() function. This functions similarly to the 'md'
726 bool "fuse - support for the fuse subssystem"
728 (deprecated - needs conversion to driver model)
729 This allows reading, sensing, programming or overriding fuses
730 which control the behaviour of the device. The command uses the
739 bool "GPT (GUID Partition Table) command"
740 select PARTITION_UUIDS
742 select HAVE_BLOCK_DEVICE
745 Enable the 'gpt' command to ready and write GPT style partition
749 bool "GPT Random UUID generation"
752 Enable the generation of partitions with random UUIDs if none
755 config CMD_GPT_RENAME
756 bool "GPT partition renaming commands"
759 Enables the 'gpt' command to interchange names on two GPT
760 partitions via the 'gpt swap' command or to rename single
761 partitions via the 'rename' command.
764 bool "ide - Support for IDE drivers"
767 Provides an 'ide' command which allows accessing the IDE drive,
768 reseting the IDE interface, printing the partition table and
769 geting device info. It also enables the 'diskboot' command which
770 permits booting from an IDE drive.
773 bool "io - Support for performing I/O accesses"
775 Provides an 'iod' command to display I/O space and an 'iow' command
776 to write values to the I/O space. This can be useful for manually
777 checking the state of devices during boot when debugging device
781 bool "iotrace - Support for tracing I/O activity"
783 Provides an 'iotrace' command which supports recording I/O reads and
784 writes in a trace buffer in memory . It also maintains a checksum
785 of the trace records (even if space is exhausted) so that the
786 sequence of I/O accesses can be verified.
788 When debugging drivers it is useful to see what I/O accesses were
789 done and in what order.
791 Even if the individual accesses are of little interest it can be
792 useful to verify that the access pattern is consistent each time
793 an operation is performed. In this case a checksum can be used to
794 characterise the operation of a driver. The checksum can be compared
795 across different runs of the operation to verify that the driver is
798 In particular, when performing major refactoring of the driver, where
799 the access pattern should not change, the checksum provides assurance
800 that the refactoring work has not broken the driver.
802 This works by sneaking into the io.h heder for an architecture and
803 redirecting I/O accesses through iotrace's tracing mechanism.
805 For now no commands are provided to examine the trace buffer. The
806 format is fairly simple, so 'md' is a reasonable substitute.
808 Note: The checksum feature is only useful for I/O regions where the
809 contents do not change outside of software control. Where this is not
810 suitable you can fall back to manually comparing the addresses. It
811 might be useful to enhance tracing to only checksum the accesses and
812 not the data read/written.
823 Load a binary file over serial line.
829 Load an S-Record file over serial line
834 MMC memory mapped support.
837 bool "Enable support for RPMB in the mmc command"
840 Enable the commands for reading, writing and programming the
841 key for the Replay Protection Memory Block partition in eMMC.
843 config CMD_MMC_SWRITE
845 depends on CMD_MMC && MMC_WRITE
848 Enable support for the "mmc swrite" command to write Android sparse
853 default y if NAND_SUNXI
858 config CMD_NAND_TRIMFFS
859 bool "nand write.trimffs"
860 default y if ARCH_SUNXI
862 Allows one to skip empty pages when flashing something on a NAND.
864 config CMD_NAND_LOCK_UNLOCK
865 bool "nand lock/unlock"
867 NAND locking support.
869 config CMD_NAND_TORTURE
872 NAND torture support.
881 NVM Express device support
884 bool "mmc_spi - Set up MMC SPI device"
886 Provides a way to set up an MMC (Multimedia Card) SPI (Serial
887 Peripheral Interface) device. The device provides a means of
888 accessing an MMC device via SPI using a single data line, limited
889 to 20MHz. It is useful since it reduces the amount of protocol code
893 bool "onenand - access to onenand device"
895 OneNAND is a brand of NAND ('Not AND' gate) flash which provides
896 various useful features. This command allows reading, writing,
897 and erasing blocks. It allso provides a way to show and change
898 bad blocks, and test the device.
902 select PARTITION_UUIDS
903 select HAVE_BLOCK_DEVICE
905 Read and display information about the partition table on
909 bool "pci - Access PCI devices"
911 Provide access to PCI (Peripheral Interconnect Bus), a type of bus
912 used on some devices to allow the CPU to communicate with its
913 peripherals. Sub-commands allow bus enumeration, displaying and
914 changing configuration space and a few other features.
917 bool "pinit - Set up PCMCIA device"
919 Provides a means to initialise a PCMCIA (Personal Computer Memory
920 Card International Association) device. This is an old standard from
921 about 1990. These devices are typically removable memory or network
922 cards using a standard 68-pin connector.
925 bool "read - Read binary data from a partition"
927 Provides low-level access to the data in a partition.
929 config CMD_REMOTEPROC
931 depends on REMOTEPROC
933 Support for Remote Processor control
936 bool "sata - Access SATA subsystem"
939 SATA (Serial Advanced Technology Attachment) is a serial bus
940 standard for connecting to hard drives and other storage devices.
941 This command provides information about attached devices and allows
942 reading, writing and other operations.
944 SATA replaces PATA (originally just ATA), which stands for Parallel AT
945 Attachment, where AT refers to an IBM AT (Advanced Technology)
946 computer released in 1984.
949 bool "saves - Save a file over serial in S-Record format"
951 Provides a way to save a binary file using the Motorola S-Record
952 format over the serial line.
955 bool "scsi - Access to SCSI devices"
958 This provides a 'scsi' command which provides access to SCSI (Small
959 Computer System Interface) devices. The command provides a way to
960 scan the bus, reset the bus, read and write data and get information
964 bool "sdram - Print SDRAM configuration information"
966 Provides information about attached SDRAM. This assumed that the
967 SDRAM has an EEPROM with information that can be read using the
968 I2C bus. This is only available on some boards.
976 bool "sf test - Allow testing of SPI flash"
978 Provides a way to test that SPI flash is working correctly. The
979 test is destructive, in that an area of SPI flash must be provided
980 for the test to use. Performance information is also provided,
981 measuring the performance of reading, writing and erasing in
982 Mbps (Million Bits Per Second). This value should approximately
983 equal the SPI bus speed for a single-bit-wide SPI bus, assuming
984 everything is working properly.
992 bool "tsi148 - Command to access tsi148 device"
994 This provides various sub-commands to initialise and configure the
995 Turndra tsi148 device. See the command help for full details.
998 bool "universe - Command to set up the Turndra Universe controller"
1000 This allows setting up the VMEbus provided by this controller.
1001 See the command help for full details.
1005 select HAVE_BLOCK_DEVICE
1011 select USB_FUNCTION_SDP
1013 Enables the command "sdp" which is used to have U-Boot emulating the
1014 Serial Download Protocol (SDP) via USB.
1017 depends on USB_FUNCTION_ROCKUSB
1019 Rockusb protocol is widely used by Rockchip SoC based devices. It can
1020 read/write info, image to/from devices. This enable rockusb command
1021 support to communication with rockusb device. for more detail about
1022 this command, please read doc/README.rockusb.
1024 config CMD_USB_MASS_STORAGE
1025 bool "UMS usb mass storage"
1026 select USB_FUNCTION_MASS_STORAGE
1028 USB mass storage support
1033 menu "Shell scripting commands"
1039 Echo args to console
1045 Return true/false on integer compare.
1051 Run script from memory
1057 Evaluate boolean and math expressions and store the result in an env
1059 Also supports loading the value at a memory location into a variable.
1060 If CONFIG_REGEX is enabled, setexpr also supports a gsub function.
1067 bool "Network commands"
1076 bootp - boot image via network using BOOTP/TFTP protocol
1080 depends on CMD_BOOTP
1082 Boot image via network using DHCP/TFTP protocol
1084 config BOOTP_BOOTPATH
1085 bool "Request & store 'rootpath' from BOOTP/DHCP server"
1087 depends on CMD_BOOTP
1089 Even though the config is called BOOTP_BOOTPATH, it stores the
1090 path in the variable 'rootpath'.
1093 bool "Request & store 'dnsip' from BOOTP/DHCP server"
1095 depends on CMD_BOOTP
1097 The primary DNS server is stored as 'dnsip'. If two servers are
1098 returned, you must set BOOTP_DNS2 to store that second server IP
1102 bool "Store 'dnsip2' from BOOTP/DHCP server"
1103 depends on BOOTP_DNS
1105 If a DHCP client requests the DNS server IP from a DHCP server,
1106 it is possible that more than one DNS serverip is offered to the
1107 client. If CONFIG_BOOTP_DNS2 is enabled, the secondary DNS
1108 server IP will be stored in the additional environment
1109 variable "dnsip2". The first DNS serverip is always
1110 stored in the variable "dnsip", when BOOTP_DNS is defined.
1112 config BOOTP_GATEWAY
1113 bool "Request & store 'gatewayip' from BOOTP/DHCP server"
1115 depends on CMD_BOOTP
1117 config BOOTP_HOSTNAME
1118 bool "Request & store 'hostname' from BOOTP/DHCP server"
1120 depends on CMD_BOOTP
1122 The name may or may not be qualified with the local domain name.
1124 config BOOTP_PREFER_SERVERIP
1125 bool "serverip variable takes precedent over DHCP server IP."
1126 depends on CMD_BOOTP
1128 By default a BOOTP/DHCP reply will overwrite the 'serverip' variable.
1130 With this option enabled, the 'serverip' variable in the environment
1131 takes precedence over DHCP server IP and will only be set by the DHCP
1132 server if not already set in the environment.
1134 config BOOTP_SUBNETMASK
1135 bool "Request & store 'netmask' from BOOTP/DHCP server"
1137 depends on CMD_BOOTP
1139 config BOOTP_NTPSERVER
1140 bool "Request & store 'ntpserverip' from BOOTP/DHCP server"
1141 depends on CMD_BOOTP
1144 bool "Send PXE client arch to BOOTP/DHCP server"
1146 depends on CMD_BOOTP && CMD_PXE
1148 Supported for ARM, ARM64, and x86 for now.
1150 config BOOTP_PXE_CLIENTARCH
1152 depends on BOOTP_PXE
1153 default 0x16 if ARM64
1157 config BOOTP_VCI_STRING
1159 depends on CMD_BOOTP
1160 default "U-Boot.armv7" if CPU_V7A || CPU_V7M || CPU_V7R
1161 default "U-Boot.armv8" if ARM64
1162 default "U-Boot.arm" if ARM
1169 tftpboot - boot image via network using TFTP protocol
1173 depends on CMD_TFTPBOOT
1175 TFTP put command, for uploading files to a server
1179 depends on CMD_TFTPBOOT
1181 Act as a TFTP server and boot the first received file
1183 config NET_TFTP_VARS
1184 bool "Control TFTP timeout and count through environment"
1185 depends on CMD_TFTPBOOT
1188 If set, allows controlling the TFTP timeout through the
1189 environment variable tftptimeout, and the TFTP maximum
1190 timeout count through the variable tftptimeoutcountmax.
1191 If unset, timeout and maximum are hard-defined as 1 second
1192 and 10 timouts per TFTP transfer.
1197 Boot image via network using RARP/TFTP protocol
1203 Boot image via network using NFS protocol.
1208 Enable MII utility commands.
1213 Send ICMP ECHO_REQUEST to network host
1218 Perform CDP network configuration
1223 Synchronize RTC via network
1228 Lookup the IP of a hostname
1230 config CMD_LINK_LOCAL
1234 Acquire a network IP address using the link-local protocol
1241 Allow control of L2 Ethernet switch commands. These are supported
1242 by the vsc9953 Ethernet driver at present. Sub-commands allow
1243 operations such as enabling / disabling a port and
1244 viewing/maintaining the filtering database (FDB)
1250 Boot image via network using PXE protocol
1255 Wait for wake-on-lan Magic Packet
1259 menu "Misc commands"
1262 bool "Enable 'bmp' command"
1263 depends on LCD || DM_VIDEO || VIDEO
1265 This provides a way to obtain information about a BMP-format iamge
1266 and to display it. BMP (which presumably stands for BitMaP) is a
1267 file format defined by Microsoft which supports images of various
1268 depths, formats and compression methods. Headers on the file
1269 determine the formats used. This command can be used by first loading
1270 the image into RAM, then using this command to look at it or display
1273 config CMD_BOOTCOUNT
1275 depends on BOOTCOUNT_LIMIT
1277 Enable the bootcount command, which allows interrogation and
1278 reset of the bootcounter.
1281 bool "Enable board-specific commands"
1283 (deprecated: instead, please define a Kconfig option for each command)
1285 Some boards have board-specific commands which are only enabled
1286 during developemnt and need to be turned off for production. This
1287 option provides a way to control this. The commands that are enabled
1288 vary depending on the board.
1290 config CMD_BKOPS_ENABLE
1291 bool "mmc bkops enable"
1295 Enable command for setting manual background operations handshake
1296 on a eMMC device. The feature is optionally available on eMMC devices
1297 conforming to standard >= 4.41.
1299 config CMD_BLOCK_CACHE
1300 bool "blkcache - control and stats for block cache"
1301 depends on BLOCK_CACHE
1302 default y if BLOCK_CACHE
1304 Enable the blkcache command, which can be used to control the
1305 operation of the cache functions.
1306 This is most useful when fine-tuning the operation of the cache
1307 during development, but also allows the cache to be disabled when
1308 it might hurt performance (e.g. when using the ums command).
1311 bool "icache or dcache"
1313 Enable the "icache" and "dcache" commands
1316 bool "Enable the 'display' command, for character displays"
1318 (this needs porting to driver model)
1319 This enables the 'display' command which allows a string to be
1320 displayed on a simple board-specific display. Implement
1321 display_putc() to use it.
1327 Enable the 'led' command which allows for control of LEDs supported
1328 by the board. The LEDs can be listed with 'led list' and controlled
1329 with led on/off/togle/blink. Any LED drivers can be controlled with
1330 this command, e.g. led_gpio.
1336 Enable the 'date' command for getting/setting the time/date in RTC
1342 Run commands and summarize execution time.
1345 bool "gettime - read elapsed time"
1347 Enable the 'gettime' command which reads the elapsed time since
1348 U-Boot started running. This shows the time in seconds and
1349 milliseconds. See also the 'bootstage' command which provides more
1350 flexibility for boot timing.
1352 # TODO: rename to CMD_SLEEP
1357 Delay execution for some time
1360 bool "support for multiprocessor"
1362 This provides an option to brinup
1363 different processors in multiprocessor
1369 Access the system timer.
1375 This provides basic access to the U-Boot's sound support. The main
1376 feature is to play a beep.
1378 sound init - set up sound system
1379 sound play - play a sound
1385 This provides access to the QEMU firmware interface. The main
1386 feature is to allow easy loading of files passed to qemu-system
1387 via -kernel / -initrd
1389 source "cmd/mvebu/Kconfig"
1392 bool "terminal - provides a way to attach a serial terminal"
1394 Provides a 'cu'-like serial terminal command. This can be used to
1395 access other serial ports from the system console. The terminal
1396 is very simple with no special processing of characters. As with
1397 cu, you can press ~. (tilde followed by period) to exit.
1400 bool "uuid, guid - generation of unique IDs"
1403 This enables two commands:
1405 uuid - generate random Universally Unique Identifier
1406 guid - generate Globally Unique Identifier based on random UUID
1408 The two commands are very similar except for the endianness of the
1413 source "cmd/ti/Kconfig"
1415 config CMD_BOOTSTAGE
1416 bool "Enable the 'bootstage' command"
1417 depends on BOOTSTAGE
1419 Add a 'bootstage' command which supports printing a report
1420 and un/stashing of bootstage data.
1422 menu "Power commands"
1424 bool "Enable Driver Model PMIC command"
1427 This is the pmic command, based on a driver model pmic's API.
1428 Command features are unchanged:
1429 - list - list pmic devices
1430 - pmic dev <id> - show or [set] operating pmic device (NEW)
1431 - pmic dump - dump registers
1432 - pmic read address - read byte of register at address
1433 - pmic write address - write byte to register at address
1434 The only one change for this command is 'dev' subcommand.
1436 config CMD_REGULATOR
1437 bool "Enable Driver Model REGULATOR command"
1438 depends on DM_REGULATOR
1440 This command is based on driver model regulator's API.
1441 User interface features:
1442 - list - list regulator devices
1443 - regulator dev <id> - show or [set] operating regulator device
1444 - regulator info - print constraints info
1445 - regulator status - print operating status
1446 - regulator value <val] <-f> - print/[set] voltage value [uV]
1447 - regulator current <val> - print/[set] current value [uA]
1448 - regulator mode <id> - print/[set] operating mode id
1449 - regulator enable - enable the regulator output
1450 - regulator disable - disable the regulator output
1452 The '-f' (force) option can be used for set the value which exceeds
1453 the limits, which are found in device-tree and are kept in regulator's
1454 uclass platdata structure.
1458 menu "Security commands"
1460 bool "Enable the 'aes' command"
1463 This provides a means to encrypt and decrypt data using the AES
1464 (Advanced Encryption Standard). This algorithm uses a symetric key
1465 and is widely used as a streaming cipher. Different key lengths are
1466 supported by the algorithm but this command only supports 128 bits
1470 bool "Enable the 'blob' command"
1472 This is used with the Freescale secure boot mechanism.
1474 Freescale's SEC block has built-in Blob Protocol which provides
1475 a method for protecting user-defined data across system power
1476 cycles. SEC block protects data in a data structure called a Blob,
1477 which provides both confidentiality and integrity protection.
1479 Encapsulating data as a blob
1480 Each time that the Blob Protocol is used to protect data, a
1481 different randomly generated key is used to encrypt the data.
1482 This random key is itself encrypted using a key which is derived
1483 from SoC's non-volatile secret key and a 16 bit Key identifier.
1484 The resulting encrypted key along with encrypted data is called a
1485 blob. The non-volatile secure key is available for use only during
1488 During decapsulation, the reverse process is performed to get back
1492 blob enc - encapsulating data as a cryptgraphic blob
1493 blob dec - decapsulating cryptgraphic blob to get the data
1497 blob enc src dst len km
1499 Encapsulate and create blob of data $len bytes long
1500 at address $src and store the result at address $dst.
1501 $km is the 16 byte key modifier is also required for
1502 generation/use as key for cryptographic operation. Key
1503 modifier should be 16 byte long.
1505 blob dec src dst len km
1507 Decapsulate the blob of data at address $src and
1508 store result of $len byte at addr $dst.
1509 $km is the 16 byte key modifier is also required for
1510 generation/use as key for cryptographic operation. Key
1511 modifier should be 16 byte long.
1514 bool "Support 'hash' command"
1517 This provides a way to hash data in memory using various supported
1518 algorithms (such as SHA1, MD5, CRC32). The computed digest can be
1519 saved to memory or to an environment variable. It is also possible
1520 to verify a hash against data in memory.
1523 bool "Support the 'hvc' command"
1524 depends on ARM_SMCCC
1526 Allows issuing Hypervisor Calls (HVCs). Mostly useful for
1527 development and testing.
1530 bool "Support the 'smc' command"
1531 depends on ARM_SMCCC
1533 Allows issuing Secure Monitor Calls (SMCs). Mostly useful for
1534 development and testing.
1540 Add -v option to verify data against a hash.
1549 bool "Enable the 'tpm' command"
1550 depends on TPM_V1 || TPM_V2
1551 select CMD_TPM_V1 if TPM_V1
1552 select CMD_TPM_V2 if TPM_V2
1554 This provides a means to talk to a TPM from the command line. A wide
1555 range of commands if provided - see 'tpm help' for details. The
1556 command requires a suitable TPM on your board and the correct driver
1562 bool "Enable the 'tpm test' command"
1565 This provides a a series of tests to confirm that the TPMv1.x is
1566 working correctly. The tests cover initialisation, non-volatile RAM,
1567 extend, global lock and checking that timing is within expectations.
1568 The tests pass correctly on Infineon TPMs but may need to be adjusted
1575 menu "Firmware commands"
1577 bool "Enable crosec command"
1581 Enable command-line access to the Chrome OS EC (Embedded
1582 Controller). This provides the 'crosec' command which has
1583 a number of sub-commands for performing EC tasks such as
1584 updating its flash, accessing a small saved context area
1585 and talking to the I2C bus behind the EC (if there is one).
1588 menu "Filesystem commands"
1590 bool "Enable the 'btrsubvol' command"
1593 This enables the 'btrsubvol' command to list subvolumes
1594 of a BTRFS filesystem. There are no special commands for
1595 listing BTRFS directories or loading BTRFS files - this
1596 can be done by the generic 'fs' commands (see CMD_FS_GENERIC)
1597 when BTRFS is enabled (see FS_BTRFS).
1600 bool "Enable the 'cbfs' command"
1603 Define this to enable support for reading from a Coreboot
1604 filesystem. This is a ROM-based filesystem used for accessing files
1605 on systems that use coreboot as the first boot-loader and then load
1606 U-Boot to actually boot the Operating System. Available commands are
1607 cbfsinit, cbfsinfo, cbfsls and cbfsload.
1610 bool "Enable the 'cramfs' command"
1611 depends on FS_CRAMFS
1613 This provides commands for dealing with CRAMFS (Compressed ROM
1614 filesystem). CRAMFS is useful when space is tight since files are
1615 compressed. Two commands are provided:
1617 cramfsls - lists files in a cramfs image
1618 cramfsload - loads a file from a cramfs image
1621 bool "ext2 command support"
1624 Enables EXT2 FS command
1627 bool "ext4 command support"
1630 Enables EXT4 FS command
1632 config CMD_EXT4_WRITE
1634 bool "ext4 write command support"
1637 Enables EXT4 FS write command
1640 bool "FAT command support"
1643 Support for the FAT fs
1645 config CMD_FS_GENERIC
1646 bool "filesystem commands"
1648 Enables filesystem commands (e.g. load, ls) that work for multiple
1652 bool "fsuuid command"
1654 Enables fsuuid command for filesystem UUID.
1657 bool "jffs2 command"
1660 Enables commands to support the JFFS2 (Journalling Flash File System
1661 version 2) filesystem. This enables fsload, ls and fsinfo which
1662 provide the ability to load files, list directories and obtain
1663 filesystem information.
1666 bool "MTD partition support"
1668 MTD partition support
1670 config MTDIDS_DEFAULT
1671 string "Default MTD IDs"
1672 depends on CMD_MTDPARTS || CMD_NAND || CMD_FLASH
1674 Defines a default MTD IDs list for use with MTD partitions in the
1675 Linux MTD command line partitions format.
1677 config MTDPARTS_DEFAULT
1678 string "Default MTD partition scheme"
1679 depends on CMD_MTDPARTS || CMD_NAND || CMD_FLASH
1681 Defines a default MTD partitioning scheme in the Linux MTD command
1682 line partitions format
1684 config CMD_MTDPARTS_SPREAD
1685 bool "Padd partition size to take account of bad blocks"
1686 depends on CMD_MTDPARTS
1688 This enables the 'spread' sub-command of the mtdparts command.
1689 This command will modify the existing mtdparts variable by increasing
1690 the size of the partitions such that 1) each partition's net size is
1691 at least as large as the size specified in the mtdparts variable and
1692 2) each partition starts on a good block.
1695 bool "reiser - Access to reiserfs filesystems"
1697 This provides two commands which operate on a resierfs filesystem,
1698 commonly used some years ago:
1700 reiserls - list files
1701 reiserload - load a file
1704 bool "yaffs2 - Access of YAFFS2 filesystem"
1708 This provides commands for accessing a YAFFS2 filesystem. Yet
1709 Another Flash Filesystem 2 is a filesystem designed specifically
1710 for NAND flash. It incorporates bad-block management and ensures
1711 that device writes are sequential regardless of filesystem
1715 bool "zfs - Access of ZFS filesystem"
1717 This provides commands to accessing a ZFS filesystem, commonly used
1718 on Solaris systems. Two sub-commands are provided:
1720 zfsls - list files in a directory
1721 zfsload - load a file
1723 See doc/README.zfs for more details.
1727 menu "Debug commands"
1732 The bedbug (emBEDded deBUGger) command provides debugging features
1733 for some PowerPC processors. For details please see the
1734 docuemntation in doc/README.beddbug
1737 bool "diag - Board diagnostics"
1739 This command provides access to board diagnostic tests. These are
1740 called Power-on Self Tests (POST). The command allows listing of
1741 available tests and running either all the tests, or specific tests
1745 bool "irq - Show information about interrupts"
1746 depends on !ARM && !MIPS && !SH
1748 This enables two commands:
1750 interrupts - enable or disable interrupts
1751 irqinfo - print device-specific interrupt information
1754 bool "kgdb - Allow debugging of U-Boot with gdb"
1756 This enables a 'kgdb' command which allows gdb to connect to U-Boot
1757 over a serial link for debugging purposes. This allows
1758 single-stepping, inspecting variables, etc. This is supported only
1759 on PowerPC at present.
1762 bool "log - Generation, control and access to logging"
1765 This provides access to logging features. It allows the output of
1766 log data to be controlled to a limited extent (setting up the default
1767 maximum log level for emitting of records). It also provides access
1768 to a command used for testing the log system.
1771 bool "trace - Support tracing of function calls and timing"
1773 Enables a command to control using of function tracing within
1774 U-Boot. This allows recording of call traces including timing
1775 information. The command can write data to memory for exporting
1776 for analsys (e.g. using bootchart). See doc/README.trace for full
1780 bool "avb - Android Verified Boot 2.0 operations"
1784 Enables a "avb" command to perform verification of partitions using
1785 Android Verified Boot 2.0 functionality. It includes such subcommands:
1786 avb init - initialize avb2 subsystem
1787 avb read_rb - read rollback index
1788 avb write_rb - write rollback index
1789 avb is_unlocked - check device lock state
1790 avb get_uuid - read and print uuid of a partition
1791 avb read_part - read data from partition
1792 avb read_part_hex - read data from partition and output to stdout
1793 avb write_part - write data to partition
1794 avb verify - run full verification chain
1798 tristate "Enable UBI - Unsorted block images commands"
1802 default y if NAND_SUNXI
1804 UBI is a software layer above MTD layer which admits use of LVM-like
1805 logical volumes on top of MTD devices, hides some complexities of
1806 flash chips like wear and bad blocks and provides some other useful
1807 capabilities. Please, consult the MTD web site for more details
1808 (www.linux-mtd.infradead.org). Activate this option if you want
1809 to use U-Boot UBI commands.
1812 tristate "Enable UBIFS - Unsorted block images filesystem commands"
1816 default y if CMD_UBI
1818 UBIFS is a file system for flash devices which works on top of UBI.
projects / u-boot / blob