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 "bind/unbind - Bind or unbind a device to/from a driver"
614 Bind or unbind a device to/from a driver from the command line.
615 This is useful in situations where a device may be handled by several
616 drivers. For example, this can be used to bind a UDC to the usb ether
617 gadget driver from the command line.
620 bool "clk - Show clock frequencies"
623 Shows clock frequences by calling a sock_clk_dump() hook function.
624 This is depreated in favour of using the CLK uclass and accessing
625 clock values from associated drivers. However currently no command
629 bool "demo - Demonstration commands for driver model"
632 Provides a 'demo' command which can be used to play around with
633 driver model. To use this properly you will need to enable one or
634 both of the demo devices (DM_DEMO_SHAPE and DM_DEMO_SIMPLE).
635 Otherwise you will always get an empty list of devices. The demo
636 devices are defined in the sandbox device tree, so the easiest
637 option is to use sandbox and pass the -d point to sandbox's
644 Enables the command "dfu" which is used to have U-Boot create a DFU
645 class device via USB. This command requires that the "dfu_alt_info"
646 environment variable be set and define the alt settings to expose to
650 bool "dm - Access to driver model information"
653 Provides access to driver model data structures and information,
654 such as a list of devices, list of uclasses and the state of each
655 device (e.g. activated). This is not required for operation, but
656 can be useful to see the state of driver model for debugging or
660 bool "fastboot - Android fastboot support"
663 This enables the command "fastboot" which enables the Android
664 fastboot mode for the platform. Fastboot is a protocol for
665 downloading images, flashing and device control used on
666 Android devices. Fastboot requires either the network stack
667 enabled or support for acting as a USB device.
669 See doc/README.android-fastboot for more information.
672 bool "fdcboot - Boot from floppy device"
674 The 'fdtboot' command allows booting an image from a floppy disk.
677 bool "flinfo, erase, protect"
681 flinfo - print FLASH memory information
683 protect - enable or disable FLASH write protection
692 config CMD_FPGA_LOADBP
693 bool "fpga loadbp - load partial bitstream (Xilinx only)"
696 Supports loading an FPGA device from a bitstream buffer containing
699 config CMD_FPGA_LOADFS
700 bool "fpga loadfs - load bitstream from FAT filesystem (Xilinx only)"
703 Supports loading an FPGA device from a FAT filesystem.
705 config CMD_FPGA_LOADMK
706 bool "fpga loadmk - load bitstream from image"
709 Supports loading an FPGA device from a image generated by mkimage.
711 config CMD_FPGA_LOADP
712 bool "fpga loadp - load partial bitstream"
715 Supports loading an FPGA device from a bitstream buffer containing
718 config CMD_FPGA_LOAD_SECURE
719 bool "fpga loads - loads secure bitstreams (Xilinx only)"
722 Enables the fpga loads command which is used to load secure
723 (authenticated or encrypted or both) bitstreams on to FPGA.
726 bool "fpgad - dump FPGA registers"
728 (legacy, needs conversion to driver model)
729 Provides a way to dump FPGA registers by calling the board-specific
730 fpga_get_reg() function. This functions similarly to the 'md'
734 bool "fuse - support for the fuse subssystem"
736 (deprecated - needs conversion to driver model)
737 This allows reading, sensing, programming or overriding fuses
738 which control the behaviour of the device. The command uses the
747 bool "GPT (GUID Partition Table) command"
749 select HAVE_BLOCK_DEVICE
750 select PARTITION_UUIDS
753 Enable the 'gpt' command to ready and write GPT style partition
757 bool "GPT Random UUID generation"
760 Enable the generation of partitions with random UUIDs if none
763 config CMD_GPT_RENAME
764 bool "GPT partition renaming commands"
767 Enables the 'gpt' command to interchange names on two GPT
768 partitions via the 'gpt swap' command or to rename single
769 partitions via the 'rename' command.
772 bool "ide - Support for IDE drivers"
775 Provides an 'ide' command which allows accessing the IDE drive,
776 reseting the IDE interface, printing the partition table and
777 geting device info. It also enables the 'diskboot' command which
778 permits booting from an IDE drive.
781 bool "io - Support for performing I/O accesses"
783 Provides an 'iod' command to display I/O space and an 'iow' command
784 to write values to the I/O space. This can be useful for manually
785 checking the state of devices during boot when debugging device
789 bool "iotrace - Support for tracing I/O activity"
791 Provides an 'iotrace' command which supports recording I/O reads and
792 writes in a trace buffer in memory . It also maintains a checksum
793 of the trace records (even if space is exhausted) so that the
794 sequence of I/O accesses can be verified.
796 When debugging drivers it is useful to see what I/O accesses were
797 done and in what order.
799 Even if the individual accesses are of little interest it can be
800 useful to verify that the access pattern is consistent each time
801 an operation is performed. In this case a checksum can be used to
802 characterise the operation of a driver. The checksum can be compared
803 across different runs of the operation to verify that the driver is
806 In particular, when performing major refactoring of the driver, where
807 the access pattern should not change, the checksum provides assurance
808 that the refactoring work has not broken the driver.
810 This works by sneaking into the io.h heder for an architecture and
811 redirecting I/O accesses through iotrace's tracing mechanism.
813 For now no commands are provided to examine the trace buffer. The
814 format is fairly simple, so 'md' is a reasonable substitute.
816 Note: The checksum feature is only useful for I/O regions where the
817 contents do not change outside of software control. Where this is not
818 suitable you can fall back to manually comparing the addresses. It
819 might be useful to enhance tracing to only checksum the accesses and
820 not the data read/written.
831 Load a binary file over serial line.
837 Load an S-Record file over serial line
842 MMC memory mapped support.
845 bool "Enable support for RPMB in the mmc command"
848 Enable the commands for reading, writing and programming the
849 key for the Replay Protection Memory Block partition in eMMC.
851 config CMD_MMC_SWRITE
853 depends on CMD_MMC && MMC_WRITE
856 Enable support for the "mmc swrite" command to write Android sparse
861 default y if NAND_SUNXI
866 config CMD_NAND_TRIMFFS
867 bool "nand write.trimffs"
868 default y if ARCH_SUNXI
870 Allows one to skip empty pages when flashing something on a NAND.
872 config CMD_NAND_LOCK_UNLOCK
873 bool "nand lock/unlock"
875 NAND locking support.
877 config CMD_NAND_TORTURE
880 NAND torture support.
889 NVM Express device support
892 bool "mmc_spi - Set up MMC SPI device"
894 Provides a way to set up an MMC (Multimedia Card) SPI (Serial
895 Peripheral Interface) device. The device provides a means of
896 accessing an MMC device via SPI using a single data line, limited
897 to 20MHz. It is useful since it reduces the amount of protocol code
901 bool "onenand - access to onenand device"
903 OneNAND is a brand of NAND ('Not AND' gate) flash which provides
904 various useful features. This command allows reading, writing,
905 and erasing blocks. It allso provides a way to show and change
906 bad blocks, and test the device.
910 select HAVE_BLOCK_DEVICE
911 select PARTITION_UUIDS
913 Read and display information about the partition table on
917 bool "pci - Access PCI devices"
919 Provide access to PCI (Peripheral Interconnect Bus), a type of bus
920 used on some devices to allow the CPU to communicate with its
921 peripherals. Sub-commands allow bus enumeration, displaying and
922 changing configuration space and a few other features.
925 bool "pinit - Set up PCMCIA device"
927 Provides a means to initialise a PCMCIA (Personal Computer Memory
928 Card International Association) device. This is an old standard from
929 about 1990. These devices are typically removable memory or network
930 cards using a standard 68-pin connector.
933 bool "read - Read binary data from a partition"
935 Provides low-level access to the data in a partition.
937 config CMD_REMOTEPROC
939 depends on REMOTEPROC
941 Support for Remote Processor control
944 bool "sata - Access SATA subsystem"
947 SATA (Serial Advanced Technology Attachment) is a serial bus
948 standard for connecting to hard drives and other storage devices.
949 This command provides information about attached devices and allows
950 reading, writing and other operations.
952 SATA replaces PATA (originally just ATA), which stands for Parallel AT
953 Attachment, where AT refers to an IBM AT (Advanced Technology)
954 computer released in 1984.
957 bool "saves - Save a file over serial in S-Record format"
959 Provides a way to save a binary file using the Motorola S-Record
960 format over the serial line.
963 bool "scsi - Access to SCSI devices"
966 This provides a 'scsi' command which provides access to SCSI (Small
967 Computer System Interface) devices. The command provides a way to
968 scan the bus, reset the bus, read and write data and get information
972 bool "sdram - Print SDRAM configuration information"
974 Provides information about attached SDRAM. This assumed that the
975 SDRAM has an EEPROM with information that can be read using the
976 I2C bus. This is only available on some boards.
984 bool "sf test - Allow testing of SPI flash"
986 Provides a way to test that SPI flash is working correctly. The
987 test is destructive, in that an area of SPI flash must be provided
988 for the test to use. Performance information is also provided,
989 measuring the performance of reading, writing and erasing in
990 Mbps (Million Bits Per Second). This value should approximately
991 equal the SPI bus speed for a single-bit-wide SPI bus, assuming
992 everything is working properly.
1000 bool "tsi148 - Command to access tsi148 device"
1002 This provides various sub-commands to initialise and configure the
1003 Turndra tsi148 device. See the command help for full details.
1006 bool "universe - Command to set up the Turndra Universe controller"
1008 This allows setting up the VMEbus provided by this controller.
1009 See the command help for full details.
1013 select HAVE_BLOCK_DEVICE
1019 select USB_FUNCTION_SDP
1021 Enables the command "sdp" which is used to have U-Boot emulating the
1022 Serial Download Protocol (SDP) via USB.
1026 depends on USB_FUNCTION_ROCKUSB
1028 Rockusb protocol is widely used by Rockchip SoC based devices. It can
1029 read/write info, image to/from devices. This enable rockusb command
1030 support to communication with rockusb device. for more detail about
1031 this command, please read doc/README.rockusb.
1033 config CMD_USB_MASS_STORAGE
1034 bool "UMS usb mass storage"
1035 select USB_FUNCTION_MASS_STORAGE
1037 USB mass storage support
1043 Enable the command "axi" for accessing AXI (Advanced eXtensible
1044 Interface) busses, a on-chip interconnect specification for managing
1045 functional blocks in SoC designs, which is also often used in designs
1046 involving FPGAs (e.g. communication with IP cores in Xilinx FPGAs).
1050 menu "Shell scripting commands"
1056 Echo args to console
1062 Return true/false on integer compare.
1068 Run script from memory
1074 Evaluate boolean and math expressions and store the result in an env
1076 Also supports loading the value at a memory location into a variable.
1077 If CONFIG_REGEX is enabled, setexpr also supports a gsub function.
1084 bool "Network commands"
1094 bootp - boot image via network using BOOTP/TFTP protocol
1098 depends on CMD_BOOTP
1100 Boot image via network using DHCP/TFTP protocol
1102 config BOOTP_BOOTPATH
1103 bool "Request & store 'rootpath' from BOOTP/DHCP server"
1105 depends on CMD_BOOTP
1107 Even though the config is called BOOTP_BOOTPATH, it stores the
1108 path in the variable 'rootpath'.
1111 bool "Request & store 'dnsip' from BOOTP/DHCP server"
1113 depends on CMD_BOOTP
1115 The primary DNS server is stored as 'dnsip'. If two servers are
1116 returned, you must set BOOTP_DNS2 to store that second server IP
1120 bool "Store 'dnsip2' from BOOTP/DHCP server"
1121 depends on BOOTP_DNS
1123 If a DHCP client requests the DNS server IP from a DHCP server,
1124 it is possible that more than one DNS serverip is offered to the
1125 client. If CONFIG_BOOTP_DNS2 is enabled, the secondary DNS
1126 server IP will be stored in the additional environment
1127 variable "dnsip2". The first DNS serverip is always
1128 stored in the variable "dnsip", when BOOTP_DNS is defined.
1130 config BOOTP_GATEWAY
1131 bool "Request & store 'gatewayip' from BOOTP/DHCP server"
1133 depends on CMD_BOOTP
1135 config BOOTP_HOSTNAME
1136 bool "Request & store 'hostname' from BOOTP/DHCP server"
1138 depends on CMD_BOOTP
1140 The name may or may not be qualified with the local domain name.
1142 config BOOTP_PREFER_SERVERIP
1143 bool "serverip variable takes precedent over DHCP server IP."
1144 depends on CMD_BOOTP
1146 By default a BOOTP/DHCP reply will overwrite the 'serverip' variable.
1148 With this option enabled, the 'serverip' variable in the environment
1149 takes precedence over DHCP server IP and will only be set by the DHCP
1150 server if not already set in the environment.
1152 config BOOTP_SUBNETMASK
1153 bool "Request & store 'netmask' from BOOTP/DHCP server"
1155 depends on CMD_BOOTP
1157 config BOOTP_NTPSERVER
1158 bool "Request & store 'ntpserverip' from BOOTP/DHCP server"
1159 depends on CMD_BOOTP
1162 bool "Send PXE client arch to BOOTP/DHCP server"
1164 depends on CMD_BOOTP && CMD_PXE
1166 Supported for ARM, ARM64, and x86 for now.
1168 config BOOTP_PXE_CLIENTARCH
1170 depends on BOOTP_PXE
1171 default 0x16 if ARM64
1175 config BOOTP_VCI_STRING
1177 depends on CMD_BOOTP
1178 default "U-Boot.armv7" if CPU_V7A || CPU_V7M || CPU_V7R
1179 default "U-Boot.armv8" if ARM64
1180 default "U-Boot.arm" if ARM
1187 tftpboot - boot image via network using TFTP protocol
1191 depends on CMD_TFTPBOOT
1193 TFTP put command, for uploading files to a server
1197 depends on CMD_TFTPBOOT
1199 Act as a TFTP server and boot the first received file
1201 config NET_TFTP_VARS
1202 bool "Control TFTP timeout and count through environment"
1203 depends on CMD_TFTPBOOT
1206 If set, allows controlling the TFTP timeout through the
1207 environment variable tftptimeout, and the TFTP maximum
1208 timeout count through the variable tftptimeoutcountmax.
1209 If unset, timeout and maximum are hard-defined as 1 second
1210 and 10 timouts per TFTP transfer.
1215 Boot image via network using RARP/TFTP protocol
1221 Boot image via network using NFS protocol.
1226 Enable MII utility commands.
1231 Send ICMP ECHO_REQUEST to network host
1236 Perform CDP network configuration
1241 Synchronize RTC via network
1246 Lookup the IP of a hostname
1248 config CMD_LINK_LOCAL
1252 Acquire a network IP address using the link-local protocol
1259 Allow control of L2 Ethernet switch commands. These are supported
1260 by the vsc9953 Ethernet driver at present. Sub-commands allow
1261 operations such as enabling / disabling a port and
1262 viewing/maintaining the filtering database (FDB)
1268 Boot image via network using PXE protocol
1273 Wait for wake-on-lan Magic Packet
1277 menu "Misc commands"
1280 bool "Enable 'bmp' command"
1281 depends on LCD || DM_VIDEO || VIDEO
1283 This provides a way to obtain information about a BMP-format iamge
1284 and to display it. BMP (which presumably stands for BitMaP) is a
1285 file format defined by Microsoft which supports images of various
1286 depths, formats and compression methods. Headers on the file
1287 determine the formats used. This command can be used by first loading
1288 the image into RAM, then using this command to look at it or display
1291 config CMD_BOOTCOUNT
1293 depends on BOOTCOUNT_LIMIT
1295 Enable the bootcount command, which allows interrogation and
1296 reset of the bootcounter.
1299 bool "Enable board-specific commands"
1301 (deprecated: instead, please define a Kconfig option for each command)
1303 Some boards have board-specific commands which are only enabled
1304 during developemnt and need to be turned off for production. This
1305 option provides a way to control this. The commands that are enabled
1306 vary depending on the board.
1308 config CMD_BKOPS_ENABLE
1309 bool "mmc bkops enable"
1313 Enable command for setting manual background operations handshake
1314 on a eMMC device. The feature is optionally available on eMMC devices
1315 conforming to standard >= 4.41.
1317 config CMD_BLOCK_CACHE
1318 bool "blkcache - control and stats for block cache"
1319 depends on BLOCK_CACHE
1320 default y if BLOCK_CACHE
1322 Enable the blkcache command, which can be used to control the
1323 operation of the cache functions.
1324 This is most useful when fine-tuning the operation of the cache
1325 during development, but also allows the cache to be disabled when
1326 it might hurt performance (e.g. when using the ums command).
1329 bool "icache or dcache"
1331 Enable the "icache" and "dcache" commands
1334 bool "Enable the 'display' command, for character displays"
1336 (this needs porting to driver model)
1337 This enables the 'display' command which allows a string to be
1338 displayed on a simple board-specific display. Implement
1339 display_putc() to use it.
1345 Enable the 'led' command which allows for control of LEDs supported
1346 by the board. The LEDs can be listed with 'led list' and controlled
1347 with led on/off/togle/blink. Any LED drivers can be controlled with
1348 this command, e.g. led_gpio.
1354 Enable the 'date' command for getting/setting the time/date in RTC
1360 Run commands and summarize execution time.
1363 bool "gettime - read elapsed time"
1365 Enable the 'gettime' command which reads the elapsed time since
1366 U-Boot started running. This shows the time in seconds and
1367 milliseconds. See also the 'bootstage' command which provides more
1368 flexibility for boot timing.
1370 # TODO: rename to CMD_SLEEP
1375 Delay execution for some time
1378 bool "support for multiprocessor"
1380 This provides an option to brinup
1381 different processors in multiprocessor
1387 Access the system timer.
1393 This provides basic access to the U-Boot's sound support. The main
1394 feature is to play a beep.
1396 sound init - set up sound system
1397 sound play - play a sound
1403 This provides access to the QEMU firmware interface. The main
1404 feature is to allow easy loading of files passed to qemu-system
1405 via -kernel / -initrd
1407 source "cmd/mvebu/Kconfig"
1410 bool "terminal - provides a way to attach a serial terminal"
1412 Provides a 'cu'-like serial terminal command. This can be used to
1413 access other serial ports from the system console. The terminal
1414 is very simple with no special processing of characters. As with
1415 cu, you can press ~. (tilde followed by period) to exit.
1418 bool "uuid, guid - generation of unique IDs"
1421 This enables two commands:
1423 uuid - generate random Universally Unique Identifier
1424 guid - generate Globally Unique Identifier based on random UUID
1426 The two commands are very similar except for the endianness of the
1431 source "cmd/ti/Kconfig"
1433 config CMD_BOOTSTAGE
1434 bool "Enable the 'bootstage' command"
1435 depends on BOOTSTAGE
1437 Add a 'bootstage' command which supports printing a report
1438 and un/stashing of bootstage data.
1440 menu "Power commands"
1442 bool "Enable Driver Model PMIC command"
1445 This is the pmic command, based on a driver model pmic's API.
1446 Command features are unchanged:
1447 - list - list pmic devices
1448 - pmic dev <id> - show or [set] operating pmic device (NEW)
1449 - pmic dump - dump registers
1450 - pmic read address - read byte of register at address
1451 - pmic write address - write byte to register at address
1452 The only one change for this command is 'dev' subcommand.
1454 config CMD_REGULATOR
1455 bool "Enable Driver Model REGULATOR command"
1456 depends on DM_REGULATOR
1458 This command is based on driver model regulator's API.
1459 User interface features:
1460 - list - list regulator devices
1461 - regulator dev <id> - show or [set] operating regulator device
1462 - regulator info - print constraints info
1463 - regulator status - print operating status
1464 - regulator value <val] <-f> - print/[set] voltage value [uV]
1465 - regulator current <val> - print/[set] current value [uA]
1466 - regulator mode <id> - print/[set] operating mode id
1467 - regulator enable - enable the regulator output
1468 - regulator disable - disable the regulator output
1470 The '-f' (force) option can be used for set the value which exceeds
1471 the limits, which are found in device-tree and are kept in regulator's
1472 uclass platdata structure.
1476 menu "Security commands"
1478 bool "Enable the 'aes' command"
1481 This provides a means to encrypt and decrypt data using the AES
1482 (Advanced Encryption Standard). This algorithm uses a symetric key
1483 and is widely used as a streaming cipher. Different key lengths are
1484 supported by the algorithm but this command only supports 128 bits
1488 bool "Enable the 'blob' command"
1490 This is used with the Freescale secure boot mechanism.
1492 Freescale's SEC block has built-in Blob Protocol which provides
1493 a method for protecting user-defined data across system power
1494 cycles. SEC block protects data in a data structure called a Blob,
1495 which provides both confidentiality and integrity protection.
1497 Encapsulating data as a blob
1498 Each time that the Blob Protocol is used to protect data, a
1499 different randomly generated key is used to encrypt the data.
1500 This random key is itself encrypted using a key which is derived
1501 from SoC's non-volatile secret key and a 16 bit Key identifier.
1502 The resulting encrypted key along with encrypted data is called a
1503 blob. The non-volatile secure key is available for use only during
1506 During decapsulation, the reverse process is performed to get back
1510 blob enc - encapsulating data as a cryptgraphic blob
1511 blob dec - decapsulating cryptgraphic blob to get the data
1515 blob enc src dst len km
1517 Encapsulate and create blob of data $len bytes long
1518 at address $src and store the result at address $dst.
1519 $km is the 16 byte key modifier is also required for
1520 generation/use as key for cryptographic operation. Key
1521 modifier should be 16 byte long.
1523 blob dec src dst len km
1525 Decapsulate the blob of data at address $src and
1526 store result of $len byte at addr $dst.
1527 $km is the 16 byte key modifier is also required for
1528 generation/use as key for cryptographic operation. Key
1529 modifier should be 16 byte long.
1532 bool "Support 'hash' command"
1535 This provides a way to hash data in memory using various supported
1536 algorithms (such as SHA1, MD5, CRC32). The computed digest can be
1537 saved to memory or to an environment variable. It is also possible
1538 to verify a hash against data in memory.
1541 bool "Support the 'hvc' command"
1542 depends on ARM_SMCCC
1544 Allows issuing Hypervisor Calls (HVCs). Mostly useful for
1545 development and testing.
1548 bool "Support the 'smc' command"
1549 depends on ARM_SMCCC
1551 Allows issuing Secure Monitor Calls (SMCs). Mostly useful for
1552 development and testing.
1558 Add -v option to verify data against a hash.
1568 bool "Enable the 'tpm' command"
1569 depends on TPM_V1 || TPM_V2
1570 select CMD_TPM_V1 if TPM_V1
1571 select CMD_TPM_V2 if TPM_V2
1573 This provides a means to talk to a TPM from the command line. A wide
1574 range of commands if provided - see 'tpm help' for details. The
1575 command requires a suitable TPM on your board and the correct driver
1581 bool "Enable the 'tpm test' command"
1584 This provides a a series of tests to confirm that the TPMv1.x is
1585 working correctly. The tests cover initialisation, non-volatile RAM,
1586 extend, global lock and checking that timing is within expectations.
1587 The tests pass correctly on Infineon TPMs but may need to be adjusted
1594 menu "Firmware commands"
1596 bool "Enable crosec command"
1600 Enable command-line access to the Chrome OS EC (Embedded
1601 Controller). This provides the 'crosec' command which has
1602 a number of sub-commands for performing EC tasks such as
1603 updating its flash, accessing a small saved context area
1604 and talking to the I2C bus behind the EC (if there is one).
1607 menu "Filesystem commands"
1609 bool "Enable the 'btrsubvol' command"
1612 This enables the 'btrsubvol' command to list subvolumes
1613 of a BTRFS filesystem. There are no special commands for
1614 listing BTRFS directories or loading BTRFS files - this
1615 can be done by the generic 'fs' commands (see CMD_FS_GENERIC)
1616 when BTRFS is enabled (see FS_BTRFS).
1619 bool "Enable the 'cbfs' command"
1622 Define this to enable support for reading from a Coreboot
1623 filesystem. This is a ROM-based filesystem used for accessing files
1624 on systems that use coreboot as the first boot-loader and then load
1625 U-Boot to actually boot the Operating System. Available commands are
1626 cbfsinit, cbfsinfo, cbfsls and cbfsload.
1629 bool "Enable the 'cramfs' command"
1630 depends on FS_CRAMFS
1632 This provides commands for dealing with CRAMFS (Compressed ROM
1633 filesystem). CRAMFS is useful when space is tight since files are
1634 compressed. Two commands are provided:
1636 cramfsls - lists files in a cramfs image
1637 cramfsload - loads a file from a cramfs image
1640 bool "ext2 command support"
1643 Enables EXT2 FS command
1646 bool "ext4 command support"
1649 Enables EXT4 FS command
1651 config CMD_EXT4_WRITE
1653 bool "ext4 write command support"
1656 Enables EXT4 FS write command
1659 bool "FAT command support"
1662 Support for the FAT fs
1664 config CMD_FS_GENERIC
1665 bool "filesystem commands"
1667 Enables filesystem commands (e.g. load, ls) that work for multiple
1671 bool "fsuuid command"
1673 Enables fsuuid command for filesystem UUID.
1676 bool "jffs2 command"
1679 Enables commands to support the JFFS2 (Journalling Flash File System
1680 version 2) filesystem. This enables fsload, ls and fsinfo which
1681 provide the ability to load files, list directories and obtain
1682 filesystem information.
1685 bool "MTD partition support"
1686 select MTD_DEVICE if (CMD_NAND || NAND)
1688 MTD partition support
1690 config MTDIDS_DEFAULT
1691 string "Default MTD IDs"
1692 depends on CMD_MTDPARTS || CMD_NAND || CMD_FLASH
1694 Defines a default MTD IDs list for use with MTD partitions in the
1695 Linux MTD command line partitions format.
1697 config MTDPARTS_DEFAULT
1698 string "Default MTD partition scheme"
1699 depends on CMD_MTDPARTS || CMD_NAND || CMD_FLASH
1701 Defines a default MTD partitioning scheme in the Linux MTD command
1702 line partitions format
1704 config CMD_MTDPARTS_SPREAD
1705 bool "Padd partition size to take account of bad blocks"
1706 depends on CMD_MTDPARTS
1708 This enables the 'spread' sub-command of the mtdparts command.
1709 This command will modify the existing mtdparts variable by increasing
1710 the size of the partitions such that 1) each partition's net size is
1711 at least as large as the size specified in the mtdparts variable and
1712 2) each partition starts on a good block.
1715 bool "reiser - Access to reiserfs filesystems"
1717 This provides two commands which operate on a resierfs filesystem,
1718 commonly used some years ago:
1720 reiserls - list files
1721 reiserload - load a file
1724 bool "yaffs2 - Access of YAFFS2 filesystem"
1728 This provides commands for accessing a YAFFS2 filesystem. Yet
1729 Another Flash Filesystem 2 is a filesystem designed specifically
1730 for NAND flash. It incorporates bad-block management and ensures
1731 that device writes are sequential regardless of filesystem
1735 bool "zfs - Access of ZFS filesystem"
1737 This provides commands to accessing a ZFS filesystem, commonly used
1738 on Solaris systems. Two sub-commands are provided:
1740 zfsls - list files in a directory
1741 zfsload - load a file
1743 See doc/README.zfs for more details.
1747 menu "Debug commands"
1752 The bedbug (emBEDded deBUGger) command provides debugging features
1753 for some PowerPC processors. For details please see the
1754 docuemntation in doc/README.beddbug
1757 bool "diag - Board diagnostics"
1759 This command provides access to board diagnostic tests. These are
1760 called Power-on Self Tests (POST). The command allows listing of
1761 available tests and running either all the tests, or specific tests
1765 bool "irq - Show information about interrupts"
1766 depends on !ARM && !MIPS && !SH
1768 This enables two commands:
1770 interrupts - enable or disable interrupts
1771 irqinfo - print device-specific interrupt information
1774 bool "kgdb - Allow debugging of U-Boot with gdb"
1776 This enables a 'kgdb' command which allows gdb to connect to U-Boot
1777 over a serial link for debugging purposes. This allows
1778 single-stepping, inspecting variables, etc. This is supported only
1779 on PowerPC at present.
1782 bool "log - Generation, control and access to logging"
1785 This provides access to logging features. It allows the output of
1786 log data to be controlled to a limited extent (setting up the default
1787 maximum log level for emitting of records). It also provides access
1788 to a command used for testing the log system.
1791 bool "trace - Support tracing of function calls and timing"
1793 Enables a command to control using of function tracing within
1794 U-Boot. This allows recording of call traces including timing
1795 information. The command can write data to memory for exporting
1796 for analsys (e.g. using bootchart). See doc/README.trace for full
1800 bool "avb - Android Verified Boot 2.0 operations"
1801 depends on AVB_VERIFY
1804 Enables a "avb" command to perform verification of partitions using
1805 Android Verified Boot 2.0 functionality. It includes such subcommands:
1806 avb init - initialize avb2 subsystem
1807 avb read_rb - read rollback index
1808 avb write_rb - write rollback index
1809 avb is_unlocked - check device lock state
1810 avb get_uuid - read and print uuid of a partition
1811 avb read_part - read data from partition
1812 avb read_part_hex - read data from partition and output to stdout
1813 avb write_part - write data to partition
1814 avb verify - run full verification chain
1818 tristate "Enable UBI - Unsorted block images commands"
1819 default y if NAND_SUNXI
1824 UBI is a software layer above MTD layer which admits use of LVM-like
1825 logical volumes on top of MTD devices, hides some complexities of
1826 flash chips like wear and bad blocks and provides some other useful
1827 capabilities. Please, consult the MTD web site for more details
1828 (www.linux-mtd.infradead.org). Activate this option if you want
1829 to use U-Boot UBI commands.
1832 tristate "Enable UBIFS - Unsorted block images filesystem commands"
1834 default y if CMD_UBI
1838 UBIFS is a file system for flash devices which works on top of UBI.
projects / platform / kernel / u-boot.git / blob