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.
260 Android DTB/DTBO image manipulation commands. Read dtb/dtbo files from
261 image into RAM, dump image structure information, etc. Those dtb/dtbo
262 files should be merged in one dtb further, which needs to be passed to
263 the kernel, as part of a boot process.
266 bool "bootelf, bootvx"
269 Boot an ELF/vxWorks image from the memory.
272 bool "Flattened Device Tree utility commands"
276 Do FDT related setup before booting into the Operating System.
282 Start an application at a given address.
288 Run the command in the given environment variable.
294 Print header information for application image.
299 List all images found in flash
305 Extract a part of a multi-image.
310 Poweroff/Shutdown the system
313 bool "spl export - Export boot information for Falcon boot"
316 Falcon mode allows booting directly from SPL into an Operating
317 System such as Linux, thus skipping U-Boot proper. See
318 doc/README.falcon for full information about how to use this
321 config CMD_SPL_NAND_OFS
322 hex "Offset of OS command line args for Falcon-mode NAND boot"
326 This provides the offset of the command line arguments for Linux
327 when booting from NAND in Falcon mode. See doc/README.falcon
328 for full information about how to use this option (and also see
329 board/gateworks/gw_ventana/README for an example).
331 config CMD_SPL_WRITE_SIZE
332 hex "Size of argument area"
336 This provides the size of the command-line argument area in NAND
337 flash used by Falcon-mode boot. See the documentation until CMD_SPL
341 bool "fitImage update command"
343 Implements the 'fitupd' command, which allows to automatically
344 store software updates present on a TFTP server in NOR Flash
346 config CMD_THOR_DOWNLOAD
347 bool "thor - TIZEN 'thor' download"
349 Implements the 'thor' download protocol. This is a way of
350 downloading a software update over USB from an attached host.
351 There is no documentation about this within the U-Boot source code
352 but you should be able to find something on the interwebs.
355 bool "zboot - x86 boot command"
357 With x86 machines it is common to boot a bzImage file which
358 contains both a kernel and a setup.bin file. The latter includes
359 configuration information from the dark ages which x86 boards still
360 need to pick things out of.
362 Consider using FIT in preference to this since it supports directly
363 booting both 32- and 64-bit kernels, as well as secure boot.
364 Documentation is available in doc/uImage.FIT/x86-fit-boot.txt
368 menu "Environment commands"
371 bool "ask for env variable"
373 Ask for environment variable
391 Edit environment variable.
396 Allow for searching environment variables
402 Save all environment variables into the compiled-in persistent
405 config CMD_ENV_EXISTS
409 Check if a variable is defined in the environment for use in
412 config CMD_ENV_CALLBACK
413 bool "env callbacks - print callbacks and their associated variables"
415 Some environment variable have callbacks defined by
416 U_BOOT_ENV_CALLBACK. These are called when the variable changes.
417 For example changing "baudrate" adjust the serial baud rate. This
418 command lists the currently defined callbacks.
421 bool "env flags -print variables that have non-default flags"
423 Some environment variables have special flags that control their
424 behaviour. For example, serial# can only be written once and cannot
425 be deleted. This command shows the variables that have special
430 menu "Memory commands"
435 Compute binary operations (xor, or, and) of byte arrays of arbitrary
436 size from memory and store the result in memory or the environment.
449 Add -v option to verify data against a crc32 checksum.
452 bool "eeprom - EEPROM subsystem"
454 (deprecated, needs conversion to driver model)
455 Provides commands to read and write EEPROM (Electrically Erasable
456 Programmable Read Only Memory) chips that are connected over an
459 config CMD_EEPROM_LAYOUT
460 bool "Enable layout-aware eeprom commands"
461 depends on CMD_EEPROM
463 (deprecated, needs conversion to driver model)
464 When enabled, additional eeprom sub-commands become available.
466 eeprom print - prints the contents of the eeprom in a human-readable
467 way (eeprom layout fields, and data formatted to be fit for human
470 eeprom update - allows user to update eeprom fields by specifying
471 the field name, and providing the new data in a human readable format
472 (same format as displayed by the eeprom print command).
474 Both commands can either auto detect the layout, or be told which
478 __weak int parse_layout_version(char *str)
479 - override to provide your own layout name parsing
480 __weak void __eeprom_layout_assign(struct eeprom_layout *layout,
482 - override to setup the layout metadata based on the version
483 __weak int eeprom_layout_detect(unsigned char *data)
484 - override to provide your own algorithm for detecting layout
487 - contains various printing and updating functions for common
488 types of eeprom fields. Can be used for defining
491 config EEPROM_LAYOUT_HELP_STRING
492 string "Tells user what layout names are supported"
493 depends on CMD_EEPROM_LAYOUT
494 default "<not defined>"
496 Help printed with the LAYOUT VERSIONS part of the 'eeprom'
502 Infinite write loop on address range
509 Compute MD5 checksum.
514 depends on CMD_MD5SUM
516 Add -v option to verify data against an MD5 checksum.
521 Display memory information.
524 bool "md, mm, nm, mw, cp, cmp, base, loop"
529 mm - memory modify (auto-incrementing address)
530 nm - memory modify (constant address)
531 mw - memory write (fill)
534 base - print or set address offset
535 loop - initialize loop on address range
540 Simple RAM read/write test.
544 config SYS_ALT_MEMTEST
545 bool "Alternative test"
547 Use a more complete alternative memory test.
554 mdc - memory display cyclic
555 mwc - memory write cyclic
561 Compute SHA1 checksum.
563 config SHA1SUM_VERIFY
565 depends on CMD_SHA1SUM
567 Add -v option to verify data against a SHA1 checksum.
570 bool "strings - display strings in memory"
572 This works similarly to the Unix 'strings' command except that it
573 works with a memory range. String of printable characters found
574 within the range are displayed. The minimum number of characters
575 for a sequence to be considered a string can be provided.
579 menu "Compression commands"
583 default y if CMD_BOOTI
586 Support decompressing an LZMA (Lempel-Ziv-Markov chain algorithm)
591 default y if CMD_BOOTI
593 Uncompress a zip-compressed memory region.
598 Compress a memory region with zlib deflate method.
602 menu "Device access commands"
605 #depends on FLASH_CFI_DRIVER
608 ARM Ltd reference designs flash partition access
611 bool "adc - Access Analog to Digital Converters info and data"
615 Shows ADC device info and permit printing one-shot analog converted
616 data from a named Analog to Digital Converter.
619 bool "bind/unbind - Bind or unbind a device to/from a driver"
622 Bind or unbind a device to/from a driver from the command line.
623 This is useful in situations where a device may be handled by several
624 drivers. For example, this can be used to bind a UDC to the usb ether
625 gadget driver from the command line.
628 bool "clk - Show clock frequencies"
631 Shows clock frequences by calling a sock_clk_dump() hook function.
632 This is depreated in favour of using the CLK uclass and accessing
633 clock values from associated drivers. However currently no command
637 bool "demo - Demonstration commands for driver model"
640 Provides a 'demo' command which can be used to play around with
641 driver model. To use this properly you will need to enable one or
642 both of the demo devices (DM_DEMO_SHAPE and DM_DEMO_SIMPLE).
643 Otherwise you will always get an empty list of devices. The demo
644 devices are defined in the sandbox device tree, so the easiest
645 option is to use sandbox and pass the -d point to sandbox's
652 Enables the command "dfu" which is used to have U-Boot create a DFU
653 class device via USB. This command requires that the "dfu_alt_info"
654 environment variable be set and define the alt settings to expose to
658 bool "dm - Access to driver model information"
661 Provides access to driver model data structures and information,
662 such as a list of devices, list of uclasses and the state of each
663 device (e.g. activated). This is not required for operation, but
664 can be useful to see the state of driver model for debugging or
668 bool "fastboot - Android fastboot support"
671 This enables the command "fastboot" which enables the Android
672 fastboot mode for the platform. Fastboot is a protocol for
673 downloading images, flashing and device control used on
674 Android devices. Fastboot requires either the network stack
675 enabled or support for acting as a USB device.
677 See doc/README.android-fastboot for more information.
680 bool "fdcboot - Boot from floppy device"
682 The 'fdtboot' command allows booting an image from a floppy disk.
685 bool "flinfo, erase, protect"
689 flinfo - print FLASH memory information
691 protect - enable or disable FLASH write protection
700 config CMD_FPGA_LOADBP
701 bool "fpga loadbp - load partial bitstream (Xilinx only)"
704 Supports loading an FPGA device from a bitstream buffer containing
707 config CMD_FPGA_LOADFS
708 bool "fpga loadfs - load bitstream from FAT filesystem (Xilinx only)"
711 Supports loading an FPGA device from a FAT filesystem.
713 config CMD_FPGA_LOADMK
714 bool "fpga loadmk - load bitstream from image"
717 Supports loading an FPGA device from a image generated by mkimage.
719 config CMD_FPGA_LOADP
720 bool "fpga loadp - load partial bitstream"
723 Supports loading an FPGA device from a bitstream buffer containing
726 config CMD_FPGA_LOAD_SECURE
727 bool "fpga loads - loads secure bitstreams (Xilinx only)"
730 Enables the fpga loads command which is used to load secure
731 (authenticated or encrypted or both) bitstreams on to FPGA.
734 bool "fpgad - dump FPGA registers"
736 (legacy, needs conversion to driver model)
737 Provides a way to dump FPGA registers by calling the board-specific
738 fpga_get_reg() function. This functions similarly to the 'md'
742 bool "fuse - support for the fuse subssystem"
744 (deprecated - needs conversion to driver model)
745 This allows reading, sensing, programming or overriding fuses
746 which control the behaviour of the device. The command uses the
755 bool "GPT (GUID Partition Table) command"
757 select HAVE_BLOCK_DEVICE
758 select PARTITION_UUIDS
761 Enable the 'gpt' command to ready and write GPT style partition
765 bool "GPT Random UUID generation"
768 Enable the generation of partitions with random UUIDs if none
771 config CMD_GPT_RENAME
772 bool "GPT partition renaming commands"
775 Enables the 'gpt' command to interchange names on two GPT
776 partitions via the 'gpt swap' command or to rename single
777 partitions via the 'rename' command.
780 bool "ide - Support for IDE drivers"
783 Provides an 'ide' command which allows accessing the IDE drive,
784 reseting the IDE interface, printing the partition table and
785 geting device info. It also enables the 'diskboot' command which
786 permits booting from an IDE drive.
789 bool "io - Support for performing I/O accesses"
791 Provides an 'iod' command to display I/O space and an 'iow' command
792 to write values to the I/O space. This can be useful for manually
793 checking the state of devices during boot when debugging device
797 bool "iotrace - Support for tracing I/O activity"
799 Provides an 'iotrace' command which supports recording I/O reads and
800 writes in a trace buffer in memory . It also maintains a checksum
801 of the trace records (even if space is exhausted) so that the
802 sequence of I/O accesses can be verified.
804 When debugging drivers it is useful to see what I/O accesses were
805 done and in what order.
807 Even if the individual accesses are of little interest it can be
808 useful to verify that the access pattern is consistent each time
809 an operation is performed. In this case a checksum can be used to
810 characterise the operation of a driver. The checksum can be compared
811 across different runs of the operation to verify that the driver is
814 In particular, when performing major refactoring of the driver, where
815 the access pattern should not change, the checksum provides assurance
816 that the refactoring work has not broken the driver.
818 This works by sneaking into the io.h heder for an architecture and
819 redirecting I/O accesses through iotrace's tracing mechanism.
821 For now no commands are provided to examine the trace buffer. The
822 format is fairly simple, so 'md' is a reasonable substitute.
824 Note: The checksum feature is only useful for I/O regions where the
825 contents do not change outside of software control. Where this is not
826 suitable you can fall back to manually comparing the addresses. It
827 might be useful to enhance tracing to only checksum the accesses and
828 not the data read/written.
839 Load a binary file over serial line.
845 Load an S-Record file over serial line
850 MMC memory mapped support.
853 bool "Enable support for RPMB in the mmc command"
856 Enable the commands for reading, writing and programming the
857 key for the Replay Protection Memory Block partition in eMMC.
859 config CMD_MMC_SWRITE
861 depends on CMD_MMC && MMC_WRITE
864 Enable support for the "mmc swrite" command to write Android sparse
869 select MTD_PARTITIONS
871 MTD commands support.
875 default y if NAND_SUNXI
880 config CMD_NAND_TRIMFFS
881 bool "nand write.trimffs"
882 default y if ARCH_SUNXI
884 Allows one to skip empty pages when flashing something on a NAND.
886 config CMD_NAND_LOCK_UNLOCK
887 bool "nand lock/unlock"
889 NAND locking support.
891 config CMD_NAND_TORTURE
894 NAND torture support.
903 NVM Express device support
906 bool "mmc_spi - Set up MMC SPI device"
908 Provides a way to set up an MMC (Multimedia Card) SPI (Serial
909 Peripheral Interface) device. The device provides a means of
910 accessing an MMC device via SPI using a single data line, limited
911 to 20MHz. It is useful since it reduces the amount of protocol code
915 bool "onenand - access to onenand device"
917 OneNAND is a brand of NAND ('Not AND' gate) flash which provides
918 various useful features. This command allows reading, writing,
919 and erasing blocks. It allso provides a way to show and change
920 bad blocks, and test the device.
924 select HAVE_BLOCK_DEVICE
925 select PARTITION_UUIDS
927 Read and display information about the partition table on
931 bool "pci - Access PCI devices"
933 Provide access to PCI (Peripheral Interconnect Bus), a type of bus
934 used on some devices to allow the CPU to communicate with its
935 peripherals. Sub-commands allow bus enumeration, displaying and
936 changing configuration space and a few other features.
939 bool "pinit - Set up PCMCIA device"
941 Provides a means to initialise a PCMCIA (Personal Computer Memory
942 Card International Association) device. This is an old standard from
943 about 1990. These devices are typically removable memory or network
944 cards using a standard 68-pin connector.
947 bool "read - Read binary data from a partition"
949 Provides low-level access to the data in a partition.
951 config CMD_REMOTEPROC
953 depends on REMOTEPROC
955 Support for Remote Processor control
958 bool "sata - Access SATA subsystem"
961 SATA (Serial Advanced Technology Attachment) is a serial bus
962 standard for connecting to hard drives and other storage devices.
963 This command provides information about attached devices and allows
964 reading, writing and other operations.
966 SATA replaces PATA (originally just ATA), which stands for Parallel AT
967 Attachment, where AT refers to an IBM AT (Advanced Technology)
968 computer released in 1984.
971 bool "saves - Save a file over serial in S-Record format"
973 Provides a way to save a binary file using the Motorola S-Record
974 format over the serial line.
977 bool "scsi - Access to SCSI devices"
980 This provides a 'scsi' command which provides access to SCSI (Small
981 Computer System Interface) devices. The command provides a way to
982 scan the bus, reset the bus, read and write data and get information
986 bool "sdram - Print SDRAM configuration information"
988 Provides information about attached SDRAM. This assumed that the
989 SDRAM has an EEPROM with information that can be read using the
990 I2C bus. This is only available on some boards.
998 bool "sf test - Allow testing of SPI flash"
1000 Provides a way to test that SPI flash is working correctly. The
1001 test is destructive, in that an area of SPI flash must be provided
1002 for the test to use. Performance information is also provided,
1003 measuring the performance of reading, writing and erasing in
1004 Mbps (Million Bits Per Second). This value should approximately
1005 equal the SPI bus speed for a single-bit-wide SPI bus, assuming
1006 everything is working properly.
1011 SPI utility command.
1014 bool "tsi148 - Command to access tsi148 device"
1016 This provides various sub-commands to initialise and configure the
1017 Turndra tsi148 device. See the command help for full details.
1020 bool "universe - Command to set up the Turndra Universe controller"
1022 This allows setting up the VMEbus provided by this controller.
1023 See the command help for full details.
1027 select HAVE_BLOCK_DEVICE
1033 select USB_FUNCTION_SDP
1035 Enables the command "sdp" which is used to have U-Boot emulating the
1036 Serial Download Protocol (SDP) via USB.
1040 depends on USB_FUNCTION_ROCKUSB
1042 Rockusb protocol is widely used by Rockchip SoC based devices. It can
1043 read/write info, image to/from devices. This enable rockusb command
1044 support to communication with rockusb device. for more detail about
1045 this command, please read doc/README.rockusb.
1047 config CMD_USB_MASS_STORAGE
1048 bool "UMS usb mass storage"
1049 select USB_FUNCTION_MASS_STORAGE
1051 USB mass storage support
1057 Enable the command "axi" for accessing AXI (Advanced eXtensible
1058 Interface) busses, a on-chip interconnect specification for managing
1059 functional blocks in SoC designs, which is also often used in designs
1060 involving FPGAs (e.g. communication with IP cores in Xilinx FPGAs).
1064 menu "Shell scripting commands"
1070 Echo args to console
1076 Return true/false on integer compare.
1082 Run script from memory
1088 Evaluate boolean and math expressions and store the result in an env
1090 Also supports loading the value at a memory location into a variable.
1091 If CONFIG_REGEX is enabled, setexpr also supports a gsub function.
1098 bool "Network commands"
1108 bootp - boot image via network using BOOTP/TFTP protocol
1112 depends on CMD_BOOTP
1114 Boot image via network using DHCP/TFTP protocol
1116 config BOOTP_BOOTPATH
1117 bool "Request & store 'rootpath' from BOOTP/DHCP server"
1119 depends on CMD_BOOTP
1121 Even though the config is called BOOTP_BOOTPATH, it stores the
1122 path in the variable 'rootpath'.
1125 bool "Request & store 'dnsip' from BOOTP/DHCP server"
1127 depends on CMD_BOOTP
1129 The primary DNS server is stored as 'dnsip'. If two servers are
1130 returned, you must set BOOTP_DNS2 to store that second server IP
1134 bool "Store 'dnsip2' from BOOTP/DHCP server"
1135 depends on BOOTP_DNS
1137 If a DHCP client requests the DNS server IP from a DHCP server,
1138 it is possible that more than one DNS serverip is offered to the
1139 client. If CONFIG_BOOTP_DNS2 is enabled, the secondary DNS
1140 server IP will be stored in the additional environment
1141 variable "dnsip2". The first DNS serverip is always
1142 stored in the variable "dnsip", when BOOTP_DNS is defined.
1144 config BOOTP_GATEWAY
1145 bool "Request & store 'gatewayip' from BOOTP/DHCP server"
1147 depends on CMD_BOOTP
1149 config BOOTP_HOSTNAME
1150 bool "Request & store 'hostname' from BOOTP/DHCP server"
1152 depends on CMD_BOOTP
1154 The name may or may not be qualified with the local domain name.
1156 config BOOTP_PREFER_SERVERIP
1157 bool "serverip variable takes precedent over DHCP server IP."
1158 depends on CMD_BOOTP
1160 By default a BOOTP/DHCP reply will overwrite the 'serverip' variable.
1162 With this option enabled, the 'serverip' variable in the environment
1163 takes precedence over DHCP server IP and will only be set by the DHCP
1164 server if not already set in the environment.
1166 config BOOTP_SUBNETMASK
1167 bool "Request & store 'netmask' from BOOTP/DHCP server"
1169 depends on CMD_BOOTP
1171 config BOOTP_NTPSERVER
1172 bool "Request & store 'ntpserverip' from BOOTP/DHCP server"
1173 depends on CMD_BOOTP
1176 bool "Send PXE client arch to BOOTP/DHCP server"
1178 depends on CMD_BOOTP && CMD_PXE
1180 Supported for ARM, ARM64, and x86 for now.
1182 config BOOTP_PXE_CLIENTARCH
1184 depends on BOOTP_PXE
1185 default 0x16 if ARM64
1189 config BOOTP_VCI_STRING
1191 depends on CMD_BOOTP
1192 default "U-Boot.armv7" if CPU_V7A || CPU_V7M || CPU_V7R
1193 default "U-Boot.armv8" if ARM64
1194 default "U-Boot.arm" if ARM
1201 tftpboot - boot image via network using TFTP protocol
1205 depends on CMD_TFTPBOOT
1207 TFTP put command, for uploading files to a server
1211 depends on CMD_TFTPBOOT
1213 Act as a TFTP server and boot the first received file
1215 config NET_TFTP_VARS
1216 bool "Control TFTP timeout and count through environment"
1217 depends on CMD_TFTPBOOT
1220 If set, allows controlling the TFTP timeout through the
1221 environment variable tftptimeout, and the TFTP maximum
1222 timeout count through the variable tftptimeoutcountmax.
1223 If unset, timeout and maximum are hard-defined as 1 second
1224 and 10 timouts per TFTP transfer.
1229 Boot image via network using RARP/TFTP protocol
1235 Boot image via network using NFS protocol.
1240 Enable MII utility commands.
1245 Send ICMP ECHO_REQUEST to network host
1250 Perform CDP network configuration
1255 Synchronize RTC via network
1260 Lookup the IP of a hostname
1262 config CMD_LINK_LOCAL
1266 Acquire a network IP address using the link-local protocol
1273 Allow control of L2 Ethernet switch commands. These are supported
1274 by the vsc9953 Ethernet driver at present. Sub-commands allow
1275 operations such as enabling / disabling a port and
1276 viewing/maintaining the filtering database (FDB)
1282 Boot image via network using PXE protocol
1287 Wait for wake-on-lan Magic Packet
1291 menu "Misc commands"
1294 bool "Enable 'bmp' command"
1295 depends on LCD || DM_VIDEO || VIDEO
1297 This provides a way to obtain information about a BMP-format iamge
1298 and to display it. BMP (which presumably stands for BitMaP) is a
1299 file format defined by Microsoft which supports images of various
1300 depths, formats and compression methods. Headers on the file
1301 determine the formats used. This command can be used by first loading
1302 the image into RAM, then using this command to look at it or display
1305 config CMD_BOOTCOUNT
1307 depends on BOOTCOUNT_LIMIT
1309 Enable the bootcount command, which allows interrogation and
1310 reset of the bootcounter.
1313 bool "Enable board-specific commands"
1315 (deprecated: instead, please define a Kconfig option for each command)
1317 Some boards have board-specific commands which are only enabled
1318 during developemnt and need to be turned off for production. This
1319 option provides a way to control this. The commands that are enabled
1320 vary depending on the board.
1322 config CMD_BKOPS_ENABLE
1323 bool "mmc bkops enable"
1327 Enable command for setting manual background operations handshake
1328 on a eMMC device. The feature is optionally available on eMMC devices
1329 conforming to standard >= 4.41.
1331 config CMD_BLOCK_CACHE
1332 bool "blkcache - control and stats for block cache"
1333 depends on BLOCK_CACHE
1334 default y if BLOCK_CACHE
1336 Enable the blkcache command, which can be used to control the
1337 operation of the cache functions.
1338 This is most useful when fine-tuning the operation of the cache
1339 during development, but also allows the cache to be disabled when
1340 it might hurt performance (e.g. when using the ums command).
1343 bool "icache or dcache"
1345 Enable the "icache" and "dcache" commands
1348 bool "Enable the 'display' command, for character displays"
1350 (this needs porting to driver model)
1351 This enables the 'display' command which allows a string to be
1352 displayed on a simple board-specific display. Implement
1353 display_putc() to use it.
1359 Enable the 'led' command which allows for control of LEDs supported
1360 by the board. The LEDs can be listed with 'led list' and controlled
1361 with led on/off/togle/blink. Any LED drivers can be controlled with
1362 this command, e.g. led_gpio.
1368 Enable the 'date' command for getting/setting the time/date in RTC
1374 Run commands and summarize execution time.
1377 bool "gettime - read elapsed time"
1379 Enable the 'gettime' command which reads the elapsed time since
1380 U-Boot started running. This shows the time in seconds and
1381 milliseconds. See also the 'bootstage' command which provides more
1382 flexibility for boot timing.
1384 # TODO: rename to CMD_SLEEP
1389 Delay execution for some time
1392 bool "support for multiprocessor"
1394 This provides an option to brinup
1395 different processors in multiprocessor
1401 Access the system timer.
1407 This provides basic access to the U-Boot's sound support. The main
1408 feature is to play a beep.
1410 sound init - set up sound system
1411 sound play - play a sound
1417 This provides access to the QEMU firmware interface. The main
1418 feature is to allow easy loading of files passed to qemu-system
1419 via -kernel / -initrd
1421 source "cmd/mvebu/Kconfig"
1424 bool "terminal - provides a way to attach a serial terminal"
1426 Provides a 'cu'-like serial terminal command. This can be used to
1427 access other serial ports from the system console. The terminal
1428 is very simple with no special processing of characters. As with
1429 cu, you can press ~. (tilde followed by period) to exit.
1432 bool "uuid, guid - generation of unique IDs"
1435 This enables two commands:
1437 uuid - generate random Universally Unique Identifier
1438 guid - generate Globally Unique Identifier based on random UUID
1440 The two commands are very similar except for the endianness of the
1445 source "cmd/ti/Kconfig"
1447 config CMD_BOOTSTAGE
1448 bool "Enable the 'bootstage' command"
1449 depends on BOOTSTAGE
1451 Add a 'bootstage' command which supports printing a report
1452 and un/stashing of bootstage data.
1454 menu "Power commands"
1456 bool "Enable Driver Model PMIC command"
1459 This is the pmic command, based on a driver model pmic's API.
1460 Command features are unchanged:
1461 - list - list pmic devices
1462 - pmic dev <id> - show or [set] operating pmic device (NEW)
1463 - pmic dump - dump registers
1464 - pmic read address - read byte of register at address
1465 - pmic write address - write byte to register at address
1466 The only one change for this command is 'dev' subcommand.
1468 config CMD_REGULATOR
1469 bool "Enable Driver Model REGULATOR command"
1470 depends on DM_REGULATOR
1472 This command is based on driver model regulator's API.
1473 User interface features:
1474 - list - list regulator devices
1475 - regulator dev <id> - show or [set] operating regulator device
1476 - regulator info - print constraints info
1477 - regulator status - print operating status
1478 - regulator value <val] <-f> - print/[set] voltage value [uV]
1479 - regulator current <val> - print/[set] current value [uA]
1480 - regulator mode <id> - print/[set] operating mode id
1481 - regulator enable - enable the regulator output
1482 - regulator disable - disable the regulator output
1484 The '-f' (force) option can be used for set the value which exceeds
1485 the limits, which are found in device-tree and are kept in regulator's
1486 uclass platdata structure.
1490 menu "Security commands"
1492 bool "Enable the 'aes' command"
1495 This provides a means to encrypt and decrypt data using the AES
1496 (Advanced Encryption Standard). This algorithm uses a symetric key
1497 and is widely used as a streaming cipher. Different key lengths are
1498 supported by the algorithm but this command only supports 128 bits
1502 bool "Enable the 'blob' command"
1504 This is used with the Freescale secure boot mechanism.
1506 Freescale's SEC block has built-in Blob Protocol which provides
1507 a method for protecting user-defined data across system power
1508 cycles. SEC block protects data in a data structure called a Blob,
1509 which provides both confidentiality and integrity protection.
1511 Encapsulating data as a blob
1512 Each time that the Blob Protocol is used to protect data, a
1513 different randomly generated key is used to encrypt the data.
1514 This random key is itself encrypted using a key which is derived
1515 from SoC's non-volatile secret key and a 16 bit Key identifier.
1516 The resulting encrypted key along with encrypted data is called a
1517 blob. The non-volatile secure key is available for use only during
1520 During decapsulation, the reverse process is performed to get back
1524 blob enc - encapsulating data as a cryptgraphic blob
1525 blob dec - decapsulating cryptgraphic blob to get the data
1529 blob enc src dst len km
1531 Encapsulate and create blob of data $len bytes long
1532 at address $src and store the result at address $dst.
1533 $km is the 16 byte key modifier is also required for
1534 generation/use as key for cryptographic operation. Key
1535 modifier should be 16 byte long.
1537 blob dec src dst len km
1539 Decapsulate the blob of data at address $src and
1540 store result of $len byte at addr $dst.
1541 $km is the 16 byte key modifier is also required for
1542 generation/use as key for cryptographic operation. Key
1543 modifier should be 16 byte long.
1546 bool "Support 'hash' command"
1549 This provides a way to hash data in memory using various supported
1550 algorithms (such as SHA1, MD5, CRC32). The computed digest can be
1551 saved to memory or to an environment variable. It is also possible
1552 to verify a hash against data in memory.
1555 bool "Support the 'hvc' command"
1556 depends on ARM_SMCCC
1558 Allows issuing Hypervisor Calls (HVCs). Mostly useful for
1559 development and testing.
1562 bool "Support the 'smc' command"
1563 depends on ARM_SMCCC
1565 Allows issuing Secure Monitor Calls (SMCs). Mostly useful for
1566 development and testing.
1572 Add -v option to verify data against a hash.
1582 bool "Enable the 'tpm' command"
1583 depends on TPM_V1 || TPM_V2
1584 select CMD_TPM_V1 if TPM_V1
1585 select CMD_TPM_V2 if TPM_V2
1587 This provides a means to talk to a TPM from the command line. A wide
1588 range of commands if provided - see 'tpm help' for details. The
1589 command requires a suitable TPM on your board and the correct driver
1595 bool "Enable the 'tpm test' command"
1598 This provides a a series of tests to confirm that the TPMv1.x is
1599 working correctly. The tests cover initialisation, non-volatile RAM,
1600 extend, global lock and checking that timing is within expectations.
1601 The tests pass correctly on Infineon TPMs but may need to be adjusted
1608 menu "Firmware commands"
1610 bool "Enable crosec command"
1614 Enable command-line access to the Chrome OS EC (Embedded
1615 Controller). This provides the 'crosec' command which has
1616 a number of sub-commands for performing EC tasks such as
1617 updating its flash, accessing a small saved context area
1618 and talking to the I2C bus behind the EC (if there is one).
1621 menu "Filesystem commands"
1623 bool "Enable the 'btrsubvol' command"
1626 This enables the 'btrsubvol' command to list subvolumes
1627 of a BTRFS filesystem. There are no special commands for
1628 listing BTRFS directories or loading BTRFS files - this
1629 can be done by the generic 'fs' commands (see CMD_FS_GENERIC)
1630 when BTRFS is enabled (see FS_BTRFS).
1633 bool "Enable the 'cbfs' command"
1636 Define this to enable support for reading from a Coreboot
1637 filesystem. This is a ROM-based filesystem used for accessing files
1638 on systems that use coreboot as the first boot-loader and then load
1639 U-Boot to actually boot the Operating System. Available commands are
1640 cbfsinit, cbfsinfo, cbfsls and cbfsload.
1643 bool "Enable the 'cramfs' command"
1644 depends on FS_CRAMFS
1646 This provides commands for dealing with CRAMFS (Compressed ROM
1647 filesystem). CRAMFS is useful when space is tight since files are
1648 compressed. Two commands are provided:
1650 cramfsls - lists files in a cramfs image
1651 cramfsload - loads a file from a cramfs image
1654 bool "ext2 command support"
1657 Enables EXT2 FS command
1660 bool "ext4 command support"
1663 Enables EXT4 FS command
1665 config CMD_EXT4_WRITE
1667 bool "ext4 write command support"
1670 Enables EXT4 FS write command
1673 bool "FAT command support"
1676 Support for the FAT fs
1678 config CMD_FS_GENERIC
1679 bool "filesystem commands"
1681 Enables filesystem commands (e.g. load, ls) that work for multiple
1685 bool "fsuuid command"
1687 Enables fsuuid command for filesystem UUID.
1690 bool "jffs2 command"
1693 Enables commands to support the JFFS2 (Journalling Flash File System
1694 version 2) filesystem. This enables fsload, ls and fsinfo which
1695 provide the ability to load files, list directories and obtain
1696 filesystem information.
1699 bool "MTD partition support"
1700 select MTD_DEVICE if (CMD_NAND || NAND)
1702 MTD partition support
1704 config MTDIDS_DEFAULT
1705 string "Default MTD IDs"
1706 depends on CMD_MTD || CMD_MTDPARTS || CMD_NAND || CMD_FLASH
1708 Defines a default MTD IDs list for use with MTD partitions in the
1709 Linux MTD command line partitions format.
1711 config MTDPARTS_DEFAULT
1712 string "Default MTD partition scheme"
1713 depends on CMD_MTD || CMD_MTDPARTS || CMD_NAND || CMD_FLASH
1715 Defines a default MTD partitioning scheme in the Linux MTD command
1716 line partitions format
1718 config CMD_MTDPARTS_SPREAD
1719 bool "Padd partition size to take account of bad blocks"
1720 depends on CMD_MTDPARTS
1722 This enables the 'spread' sub-command of the mtdparts command.
1723 This command will modify the existing mtdparts variable by increasing
1724 the size of the partitions such that 1) each partition's net size is
1725 at least as large as the size specified in the mtdparts variable and
1726 2) each partition starts on a good block.
1729 bool "reiser - Access to reiserfs filesystems"
1731 This provides two commands which operate on a resierfs filesystem,
1732 commonly used some years ago:
1734 reiserls - list files
1735 reiserload - load a file
1738 bool "yaffs2 - Access of YAFFS2 filesystem"
1742 This provides commands for accessing a YAFFS2 filesystem. Yet
1743 Another Flash Filesystem 2 is a filesystem designed specifically
1744 for NAND flash. It incorporates bad-block management and ensures
1745 that device writes are sequential regardless of filesystem
1749 bool "zfs - Access of ZFS filesystem"
1751 This provides commands to accessing a ZFS filesystem, commonly used
1752 on Solaris systems. Two sub-commands are provided:
1754 zfsls - list files in a directory
1755 zfsload - load a file
1757 See doc/README.zfs for more details.
1761 menu "Debug commands"
1766 The bedbug (emBEDded deBUGger) command provides debugging features
1767 for some PowerPC processors. For details please see the
1768 docuemntation in doc/README.beddbug
1771 bool "diag - Board diagnostics"
1773 This command provides access to board diagnostic tests. These are
1774 called Power-on Self Tests (POST). The command allows listing of
1775 available tests and running either all the tests, or specific tests
1779 bool "irq - Show information about interrupts"
1780 depends on !ARM && !MIPS && !SH
1782 This enables two commands:
1784 interrupts - enable or disable interrupts
1785 irqinfo - print device-specific interrupt information
1788 bool "kgdb - Allow debugging of U-Boot with gdb"
1790 This enables a 'kgdb' command which allows gdb to connect to U-Boot
1791 over a serial link for debugging purposes. This allows
1792 single-stepping, inspecting variables, etc. This is supported only
1793 on PowerPC at present.
1796 bool "log - Generation, control and access to logging"
1799 This provides access to logging features. It allows the output of
1800 log data to be controlled to a limited extent (setting up the default
1801 maximum log level for emitting of records). It also provides access
1802 to a command used for testing the log system.
1805 bool "trace - Support tracing of function calls and timing"
1807 Enables a command to control using of function tracing within
1808 U-Boot. This allows recording of call traces including timing
1809 information. The command can write data to memory for exporting
1810 for analsys (e.g. using bootchart). See doc/README.trace for full
1814 bool "avb - Android Verified Boot 2.0 operations"
1815 depends on AVB_VERIFY
1818 Enables a "avb" command to perform verification of partitions using
1819 Android Verified Boot 2.0 functionality. It includes such subcommands:
1820 avb init - initialize avb2 subsystem
1821 avb read_rb - read rollback index
1822 avb write_rb - write rollback index
1823 avb is_unlocked - check device lock state
1824 avb get_uuid - read and print uuid of a partition
1825 avb read_part - read data from partition
1826 avb read_part_hex - read data from partition and output to stdout
1827 avb write_part - write data to partition
1828 avb verify - run full verification chain
1832 tristate "Enable UBI - Unsorted block images commands"
1837 UBI is a software layer above MTD layer which admits use of LVM-like
1838 logical volumes on top of MTD devices, hides some complexities of
1839 flash chips like wear and bad blocks and provides some other useful
1840 capabilities. Please, consult the MTD web site for more details
1841 (www.linux-mtd.infradead.org). Activate this option if you want
1842 to use U-Boot UBI commands.
1845 tristate "Enable UBIFS - Unsorted block images filesystem commands"
1847 default y if CMD_UBI
1851 UBIFS is a file system for flash devices which works on top of UBI.
projects / oweals / u-boot.git / blob