2 bool "Command line interface"
5 Enable U-Boot's command-line functions. This provides a means
6 to enter commands into U-Boot for a wide variety of purposes. It
7 also allows scripts (containing commands) to be executed.
8 Various commands and command categorys can be indivdually enabled.
9 Depending on the number of commands enabled, this can add
10 substantially to the size of U-Boot.
17 This option enables the "hush" shell (from Busybox) as command line
18 interpreter, thus enabling powerful command line syntax like
19 if...then...else...fi conditionals or `&&' and '||'
20 constructs ("shell scripts").
22 If disabled, you get the old, much simpler behaviour with a somewhat
23 smaller memory footprint.
25 menu "Hush flavor to use"
26 depends on HUSH_PARSER
28 config HUSH_OLD_PARSER
29 bool "Use hush old parser"
32 This option enables the old flavor of hush based on hush Busybox from
35 It is actually the default U-Boot shell when decided to use hush as shell.
37 config HUSH_MODERN_PARSER
38 bool "Use hush modern parser"
40 This option enables the new flavor of hush based on hush upstream
43 This parser is experimental and not well tested.
45 config HUSH_SELECTABLE
47 default y if HUSH_OLD_PARSER && HUSH_MODERN_PARSER
50 config CMDLINE_EDITING
51 bool "Enable command line editing"
54 Enable editing and History functions for interactive command line
57 config CMDLINE_PS_SUPPORT
58 bool "Enable support for changing the command prompt string at run-time"
59 depends on HUSH_PARSER
61 Only static string in the prompt is supported so far. The string is
62 obtained from environment variables PS1 and PS2.
65 bool "Enable auto complete using TAB"
68 Enable auto completion of commands using TAB.
71 bool "Enable long help messages"
74 Defined when you want long help messages included
75 Do not set this option when short of memory.
79 default "Zynq> " if ARCH_ZYNQ
80 default "ZynqMP> " if ARCH_ZYNQMP
83 This string is displayed in the command line to the left of the
86 config SYS_PROMPT_HUSH_PS2
87 string "Hush shell secondary prompt"
88 depends on HUSH_PARSER
91 This defines the secondary prompt string, which is
92 printed when the command interpreter needs more input
93 to complete a command. Usually "> ".
96 int "Maximum number arguments accepted by commands"
100 bool "Command execution tracer"
103 This option enables the possiblity to print all commands before
104 executing them and after all variables are evaluated (similar
105 to Bash's xtrace/'set -x' feature).
106 To enable the tracer a variable "xtrace" needs to be defined in
121 List and dump ACPI tables. ACPI (Advanced Configuration and Power
122 Interface) is used mostly on x86 for providing information to the
123 Operating System about devices in the system. The tables are set up
124 by the firmware, typically U-Boot but possibly an earlier firmware
125 module, if U-Boot is chain-loaded from something else. ACPI tables
126 can also include code, to perform hardware-specific tasks required
127 by the Operating Systems. This allows some amount of separation
128 between the firmware and OS, and is particularly useful when you
129 want to make hardware changes without the OS needing to be adjusted.
136 List non-identity virtual-physical memory mappings for 32-bit CPUs.
144 config CMD_BDINFO_EXTRA
145 bool "bdinfo extra features"
146 default y if SANDBOX || X86
148 Show additional information about the board. This uses a little more
149 code space but provides more options, particularly those useful for
150 bringup, development and debugging.
157 Print ".config" contents.
159 If this option is enabled, the ".config" file contents are embedded
160 in the U-Boot image and can be printed on the console by the "config"
161 command. This provides information of which options are enabled on
168 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.
179 config CMD_FWU_METADATA
180 bool "fwu metadata read"
181 depends on FWU_MULTI_BANK_UPDATE
183 Command to read the metadata and dump it's contents
187 depends on CMDLINE_EDITING
189 Show the command-line history, i.e. a list of commands that are in
196 Print GPL license text
201 Provides access to the Intel Power-Management Controller (PMC) so
202 that its state can be examined. This does not currently support
203 changing the state but it is still useful for debugging and seeing
212 config CMD_TLV_EEPROM
214 depends on I2C_EEPROM
217 Display and program the system EEPROM data block in ONIE Tlvinfo
218 format. TLV stands for Type-Length-Value.
220 config SPL_CMD_TLV_EEPROM
221 bool "tlv_eeprom for SPL"
222 depends on SPL_I2C_EEPROM
223 select SPL_DRIVERS_MISC
226 Read system EEPROM data block in ONIE Tlvinfo format from SPL.
230 depends on RISCV_SMODE && SBI_V02
232 Display information about the SBI implementation.
242 Run the command stored in the environment "bootcmd", i.e.
243 "bootd" does the same thing as "run bootcmd".
249 Boot an application image from the memory.
251 config CMD_BOOTM_PRE_LOAD
252 bool "enable pre-load on bootm"
254 depends on IMAGE_PRE_LOAD
256 Enable support of stage pre-load for the bootm command.
257 This stage allow to check or modify the image provided
258 to the bootm command.
263 default y if BOOTSTD_FULL
265 Support listing available bootdevs (boot devices) which can provide an
266 OS to boot, as well as showing information about a particular one.
268 This command is not necessary for bootstd to work.
275 Support scanning for bootflows available with the bootdevs. The
276 bootflows can optionally be booted.
278 config CMD_BOOTFLOW_FULL
279 bool "bootflow - extract subcommands"
280 depends on BOOTSTD_FULL
283 Add the ability to list the available bootflows, select one and obtain
284 information about it.
286 This command is not necessary for bootstd to work.
291 default y if BOOTSTD_FULL
293 Support listing available bootmethds (methods used to boot an
294 Operating System), as well as selecting the order that the bootmeths
297 This command is not necessary for bootstd to work.
300 bool "Support booting UEFI FIT images"
301 depends on EFI_BINARY_EXEC && CMD_BOOTM && FIT
304 Support booting UEFI FIT images via the bootm command.
309 Boot the Linux zImage
313 depends on ARM64 || RISCV || SANDBOX
316 Boot an AArch64 Linux Kernel image from memory.
319 bool "Support booting Linux OS images"
320 depends on CMD_BOOTM || CMD_BOOTZ || CMD_BOOTI
323 Support booting the Linux kernel directly via a command such as bootm
327 bool "Support booting NetBSD (non-EFI) loader images"
331 Support booting NetBSD via the bootm command.
333 config BOOTM_OPENRTOS
334 bool "Support booting OPENRTOS / FreeRTOS images"
337 Support booting OPENRTOS / FreeRTOS via the bootm command.
340 bool "Support booting Enea OSE images"
341 depends on (ARM && (ARM64 || CPU_V7A || CPU_V7R) || SANDBOX || PPC || X86)
344 Support booting Enea OSE images via the bootm command.
347 bool "Support booting Plan9 OS images"
351 Support booting Plan9 images via the bootm command.
354 bool "Support booting RTEMS OS images"
358 Support booting RTEMS images via the bootm command.
361 bool "Support read SEAMA NAND images"
362 depends on MTD_RAW_NAND
364 Support reading NAND Seattle Image (SEAMA) images.
367 bool "vbe - Verified Boot for Embedded"
368 depends on BOOTMETH_VBE
369 default y if BOOTSTD_FULL
371 Provides various subcommands related to VBE, such as listing the
372 available methods, looking at the state and changing which method
373 is used to boot. Updating the parameters is not currently
377 bool "Support booting VxWorks OS images"
381 Support booting VxWorks images via the bootm command.
385 depends on EFI_LOADER
388 Boot an EFI image from memory.
391 config CMD_BOOTEFI_BINARY
392 bool "Allow booting an EFI binary directly"
393 depends on EFI_BINARY_EXEC
396 Select this option to enable direct execution of binary at 'bootefi'.
397 This subcommand will allow you to load the UEFI binary using
398 other U-Boot commands or external methods and then run it.
400 config CMD_BOOTEFI_BOOTMGR
401 bool "UEFI Boot Manager command"
402 depends on EFI_BOOTMGR
405 Select this option to enable the 'bootmgr' subcommand of 'bootefi'.
406 This subcommand will allow you to select the UEFI binary to be booted
407 via UEFI variables Boot####, BootOrder, and BootNext.
409 config CMD_BOOTEFI_HELLO_COMPILE
410 bool "Compile a standard EFI hello world binary for testing"
413 This compiles a standard EFI hello world application with U-Boot so
414 that it can be used with the test/py testing framework. This is useful
415 for testing that EFI is working at a basic level, and for bringing
416 up EFI support on a new architecture.
418 No additional space will be required in the resulting U-Boot binary
419 when this option is enabled.
421 config CMD_BOOTEFI_HELLO
422 bool "Allow booting a standard EFI hello world for testing"
423 depends on CMD_BOOTEFI_BINARY && CMD_BOOTEFI_HELLO_COMPILE
424 default y if CMD_BOOTEFI_SELFTEST
426 This adds a standard EFI hello world application to U-Boot so that
427 it can be used with the 'bootefi hello' command. This is useful
428 for testing that EFI is working at a basic level, and for bringing
429 up EFI support on a new architecture.
431 source lib/efi_selftest/Kconfig
439 Add an ANSI terminal boot menu command.
444 Android DTB/DTBO image manipulation commands. Read dtb/dtbo files from
445 image into RAM, dump image structure information, etc. Those dtb/dtbo
446 files should be merged in one dtb further, which needs to be passed to
447 the kernel, as part of a boot process.
451 depends on ANDROID_BOOT_IMAGE
453 Android Boot Image manipulation commands. Allows one to extract
454 images contained in boot.img, like kernel, ramdisk, dtb, etc, and
455 obtain corresponding meta-information from boot.img.
457 See doc/android/boot-image.rst for details.
460 bool "cedit - Configuration editor"
464 Provides a command to allow editing of board configuration and
465 providing a UI for the user to adjust settings. Subcommands allow
466 loading and saving of configuration as well as showing an editor.
469 bool "bootelf, bootvx"
473 Boot an ELF/vxWorks image from the memory.
476 bool "Flattened Device Tree utility commands"
480 Do FDT related setup before booting into the Operating System.
482 config SUPPORT_EXTENSION_SCAN
486 bool "Extension board management command"
488 depends on SUPPORT_EXTENSION_SCAN
490 Enables the "extension" command, which allows to detect
491 extension boards connected to the system, and apply
492 corresponding Device Tree overlays.
498 Start an application at a given address.
504 Run the command in the given environment variable.
510 Print header information for application image.
515 List all images found in flash
521 Extract a part of a multi-image.
524 hex "imxtract max gunzip size"
526 depends on CMD_XIMG && GZIP
528 This provides the size of the commad-line argument area
529 used by imxtract for extracting pieces of FIT image.
530 It should be large enough to fit uncompressed size of
531 FIT piece we are extracting.
534 bool "spl export - Export boot information for Falcon boot"
537 Falcon mode allows booting directly from SPL into an Operating
538 System such as Linux, thus skipping U-Boot proper. See
539 doc/README.falcon for full information about how to use this
542 config CMD_SPL_NAND_OFS
543 hex "Offset of OS args or dtb for Falcon-mode NAND boot"
544 depends on CMD_SPL && (TPL_NAND_SUPPORT || SPL_NAND_SUPPORT)
547 This provides the offset of the command line arguments for Linux
548 when booting from NAND in Falcon mode. See doc/README.falcon
549 for full information about how to use this option (and also see
550 board/gateworks/gw_ventana/README for an example).
552 config CMD_SPL_NOR_OFS
553 hex "Offset of OS args or dtb for Falcon-mode NOR boot"
554 depends on CMD_SPL && SPL_NOR_SUPPORT
557 This provides the offset of the command line arguments or dtb for
558 Linux when booting from NOR in Falcon mode.
560 config CMD_SPL_WRITE_SIZE
561 hex "Size of argument area"
565 This provides the size of the command-line argument area in NAND
566 flash used by Falcon-mode boot. See the documentation until CMD_SPL
569 config CMD_THOR_DOWNLOAD
570 bool "thor - TIZEN 'thor' download"
572 select USB_FUNCTION_THOR
573 depends on USB_GADGET_DOWNLOAD
575 Implements the 'thor' download protocol. This is a way of
576 downloading a software update over USB from an attached host.
577 There is no documentation about this within the U-Boot source code
578 but you should be able to find something on the interwebs.
580 config THOR_RESET_OFF
581 bool "thor: Disable reset on completion"
582 depends on CMD_THOR_DOWNLOAD
585 bool "zboot - x86 boot command"
587 With x86 machines it is common to boot a bzImage file which
588 contains both a kernel and a setup.bin file. The latter includes
589 configuration information from the dark ages which x86 boards still
590 need to pick things out of.
592 Consider using FIT in preference to this since it supports directly
593 booting both 32- and 64-bit kernels, as well as secure boot.
594 Documentation is available in doc/uImage.FIT/x86-fit-boot.txt
598 menu "Environment commands"
601 bool "ask for env variable"
603 Ask for environment variable
621 Edit environment variable.
626 Allow for searching environment variables
632 Save all environment variables into the compiled-in persistent
637 depends on CMD_SAVEENV
639 Erase environment variables from the compiled-in persistent
642 config CMD_ENV_EXISTS
646 Check if a variable is defined in the environment for use in
649 config CMD_ENV_CALLBACK
650 bool "env callbacks - print callbacks and their associated variables"
652 Some environment variable have callbacks defined by
653 U_BOOT_ENV_CALLBACK. These are called when the variable changes.
654 For example changing "baudrate" adjust the serial baud rate. This
655 command lists the currently defined callbacks.
658 bool "env flags -print variables that have non-default flags"
660 Some environment variables have special flags that control their
661 behaviour. For example, serial# can only be written once and cannot
662 be deleted. This command shows the variables that have special
665 config CMD_NVEDIT_EFI
666 bool "env [set|print] -e - set/print UEFI variables"
667 depends on EFI_LOADER
670 UEFI variables are encoded as some form of U-Boot variables.
671 If enabled, we are allowed to set/print UEFI variables using
672 "env" command with "-e" option without knowing details.
674 config CMD_NVEDIT_INDIRECT
675 bool "env indirect - Sets environment value from another"
677 config CMD_NVEDIT_INFO
678 bool "env info - print or evaluate environment information"
680 Print environment information:
681 - env_valid : is environment valid
682 - env_ready : is environment imported into hash table
683 - env_use_default : is default environment used
685 This command can be optionally used for evaluation in scripts:
686 [-d] : evaluate whether default environment is used
687 [-p] : evaluate whether environment can be persisted
689 The result of multiple evaluations will be combined with AND.
691 config CMD_NVEDIT_LOAD
694 Load all environment variables from the compiled-in persistent
697 config CMD_NVEDIT_SELECT
700 Select the compiled-in persistent storage of environment variables.
704 menu "Memory commands"
709 Compute binary operations (xor, or, and) of byte arrays of arbitrary
710 size from memory and store the result in memory or the environment.
714 default y if BLOBLIST
716 Show information about the bloblist, a collection of binary blobs
717 held in memory that persist between SPL and U-Boot. In the case of
718 x86 devices the bloblist can be used to hold ACPI tables so that they
719 remain available in memory.
732 Add -v option to verify data against a crc32 checksum.
735 bool "eeprom - EEPROM subsystem"
737 (deprecated, needs conversion to driver model)
738 Provides commands to read and write EEPROM (Electrically Erasable
739 Programmable Read Only Memory) chips that are connected over an
742 config CMD_EEPROM_LAYOUT
743 bool "Enable layout-aware eeprom commands"
744 depends on CMD_EEPROM
746 (deprecated, needs conversion to driver model)
747 When enabled, additional eeprom sub-commands become available.
749 eeprom print - prints the contents of the eeprom in a human-readable
750 way (eeprom layout fields, and data formatted to be fit for human
753 eeprom update - allows user to update eeprom fields by specifying
754 the field name, and providing the new data in a human readable format
755 (same format as displayed by the eeprom print command).
757 Both commands can either auto detect the layout, or be told which
761 __weak int parse_layout_version(char *str)
762 - override to provide your own layout name parsing
763 __weak void __eeprom_layout_assign(struct eeprom_layout *layout,
765 - override to setup the layout metadata based on the version
766 __weak int eeprom_layout_detect(unsigned char *data)
767 - override to provide your own algorithm for detecting layout
770 - contains various printing and updating functions for common
771 types of eeprom fields. Can be used for defining
774 config EEPROM_LAYOUT_HELP_STRING
775 string "Tells user what layout names are supported"
776 depends on CMD_EEPROM_LAYOUT
777 default "<not defined>"
779 Help printed with the LAYOUT VERSIONS part of the 'eeprom'
782 config SYS_I2C_EEPROM_BUS
783 int "I2C bus of the EEPROM device."
784 depends on CMD_EEPROM
787 config SYS_I2C_EEPROM_ADDR_LEN
788 int "Length in bytes of the EEPROM memory array address"
789 depends on CMD_EEPROM || ID_EEPROM
793 Note: This is NOT the chip address length!
795 config SYS_EEPROM_SIZE
796 depends on CMD_EEPROM
797 int "Size in bytes of the EEPROM device"
800 config SYS_EEPROM_PAGE_WRITE_BITS
801 int "Number of bits used to address bytes in a single page"
802 depends on CMD_EEPROM
805 The EEPROM page size is 2^SYS_EEPROM_PAGE_WRITE_BITS.
806 A 64 byte page, for example would require six bits.
808 config SYS_EEPROM_PAGE_WRITE_DELAY_MS
809 int "Number of milliseconds to delay between page writes"
810 depends on CMD_EEPROM || CMD_I2C
816 Infinite write loop on address range
822 Compute MD5 checksum.
826 depends on CMD_MD5SUM
828 Add -v option to verify data against an MD5 checksum.
833 Display memory information.
836 bool "md, mm, nm, mw, cp, cmp, base, loop"
841 mm - memory modify (auto-incrementing address)
842 nm - memory modify (constant address)
843 mw - memory write (fill)
846 base - print or set address offset
847 loop - initialize loop on address range
849 config CMD_MEM_SEARCH
850 bool "ms - Memory search"
852 Memory-search command
854 This allows searching through a region of memory looking for hex
855 data (byte, 16-bit word, 32-bit long, also 64-bit on machines that
856 support it). It is also possible to search for a string. The
857 command accepts a memory range and a list of values to search for.
858 The values need to appear in memory in the same order they are given
859 in the command. At most 10 matches can be returned at a time, but
860 pressing return will show the next 10 matches. Environment variables
861 are set for use with scripting (memmatches, memaddr, mempos).
864 bool "Enable cyclic md/mw commands"
865 depends on CMD_MEMORY
867 Add the "mdc" and "mwc" memory commands. These are cyclic
872 This command will print 4 bytes (10,11,12,13) each 500 ms.
874 => mwc.l 100 12345678 10
875 This command will write 12345678 to address 100 all 10 ms.
880 depends on CMD_MEMORY && (LIB_RAND || LIB_HW_RAND)
882 random - fill memory with random data
887 Simple RAM read/write test.
891 config SYS_ALT_MEMTEST
892 bool "Alternative test"
894 Use a more complete alternative memory test.
898 config SYS_ALT_MEMTEST_BITFLIP
902 The alternative memory test includes bitflip test since 2020.07.
903 The bitflip test significantly increases the overall test time.
904 Bitflip test can optionally be disabled here.
908 config SYS_MEMTEST_START
909 hex "default start address for mtest"
912 This is the default start address for mtest for simple read/write
913 test. If no arguments are given to mtest, default address is used
916 config SYS_MEMTEST_END
917 hex "default end address for mtest"
920 This is the default end address for mtest for simple read/write
921 test. If no arguments are given to mtest, default address is used
930 Compute SHA1 checksum.
932 config SHA1SUM_VERIFY
934 depends on CMD_SHA1SUM
936 Add -v option to verify data against a SHA1 checksum.
939 bool "strings - display strings in memory"
941 This works similarly to the Unix 'strings' command except that it
942 works with a memory range. String of printable characters found
943 within the range are displayed. The minimum number of characters
944 for a sequence to be considered a string can be provided.
948 menu "Compression commands"
952 default y if CMD_BOOTI
955 Support decompressing an LZMA (Lempel-Ziv-Markov chain algorithm)
960 default y if CMD_BOOTI
963 Support decompressing an LZ4 image from memory region.
967 default y if CMD_BOOTI
970 Uncompress a zip-compressed memory region.
974 select GZIP_COMPRESSED
976 Compress a memory region with zlib deflate method.
980 menu "Device access commands"
983 bool "Arm FF-A test command"
984 depends on ARM_FFA_TRANSPORT
986 Provides a test command for the FF-A support
988 - Listing the partition(s) info
989 - Sending a data pattern to the specified partition
990 - Displaying the arm_ffa device info
993 #depends on FLASH_CFI_DRIVER
996 ARM Ltd reference designs flash partition access
999 bool "adc - Access Analog to Digital Converters info and data"
1001 depends on DM_REGULATOR
1003 Shows ADC device info and permit printing one-shot analog converted
1004 data from a named Analog to Digital Converter.
1008 depends on PARTITIONS
1010 Read/modify/write the fields of Bootloader Control Block, usually
1011 stored on the flash "misc" partition with its structure defined in:
1012 https://android.googlesource.com/platform/bootable/recovery/+/master/
1013 bootloader_message/include/bootloader_message/bootloader_message.h
1015 Some real-life use-cases include (but are not limited to):
1016 - Determine the "boot reason" (and act accordingly):
1017 https://source.android.com/devices/bootloader/boot-reason
1018 - Get/pass a list of commands from/to recovery:
1019 https://android.googlesource.com/platform/bootable/recovery
1020 - Inspect/dump the contents of the BCB fields
1023 bool "bind/unbind - Bind or unbind a device to/from a driver"
1027 Bind or unbind a device to/from a driver from the command line.
1028 This is useful in situations where a device may be handled by several
1029 drivers. For example, this can be used to bind a UDC to the usb ether
1030 gadget driver from the command line.
1033 bool "clk - Show clock frequencies"
1036 Shows clock frequences by calling a sock_clk_dump() hook function.
1037 This is depreated in favour of using the CLK uclass and accessing
1038 clock values from associated drivers. However currently no command
1042 bool "demo - Demonstration commands for driver model"
1045 Provides a 'demo' command which can be used to play around with
1046 driver model. To use this properly you will need to enable one or
1047 both of the demo devices (DM_DEMO_SHAPE and DM_DEMO_SIMPLE).
1048 Otherwise you will always get an empty list of devices. The demo
1049 devices are defined in the sandbox device tree, so the easiest
1050 option is to use sandbox and pass the -d point to sandbox's
1057 Enables the command "dfu" which is used to have U-Boot create a DFU
1058 class device via USB. This command requires that the "dfu_alt_info"
1059 environment variable be set and define the alt settings to expose to
1063 bool "dm - Access to driver model information"
1066 Provides access to driver model data structures and information,
1067 such as a list of devices, list of uclasses and the state of each
1068 device (e.g. activated). This is not required for operation, but
1069 can be useful to see the state of driver model for debugging or
1073 bool "fastboot - Android fastboot support"
1076 This enables the command "fastboot" which enables the Android
1077 fastboot mode for the platform. Fastboot is a protocol for
1078 downloading images, flashing and device control used on
1079 Android devices. Fastboot requires either the network stack
1080 enabled or support for acting as a USB device.
1082 See doc/android/fastboot.rst for more information.
1085 bool "flinfo, erase, protect"
1087 depends on MTD || FLASH_CFI_DRIVER || MTD_NOR_FLASH
1090 flinfo - print FLASH memory information
1091 erase - FLASH memory
1092 protect - enable or disable FLASH write protection
1101 config CMD_FPGA_LOADBP
1102 bool "fpga loadbp - load partial bitstream (Xilinx only)"
1105 Supports loading an FPGA device from a bitstream buffer containing
1106 a partial bitstream.
1108 config CMD_FPGA_LOADFS
1109 bool "fpga loadfs - load bitstream from FAT filesystem (Xilinx only)"
1112 Supports loading an FPGA device from a FAT filesystem.
1114 config CMD_FPGA_LOADMK
1115 bool "fpga loadmk - load bitstream from image"
1118 Supports loading an FPGA device from a image generated by mkimage.
1120 config CMD_FPGA_LOADP
1121 bool "fpga loadp - load partial bitstream"
1124 Supports loading an FPGA device from a bitstream buffer containing
1125 a partial bitstream.
1127 config CMD_FPGA_LOAD_SECURE
1128 bool "fpga loads - loads secure bitstreams"
1130 select FPGA_LOAD_SECURE
1132 Enables the fpga loads command which is used to load secure
1133 (authenticated or encrypted or both) bitstreams on to FPGA.
1136 bool "fpgad - dump FPGA registers"
1138 (legacy, needs conversion to driver model)
1139 Provides a way to dump FPGA registers by calling the board-specific
1140 fpga_get_reg() function. This functions similarly to the 'md'
1144 bool "fuse - support for the fuse subssystem"
1146 (deprecated - needs conversion to driver model)
1147 This allows reading, sensing, programming or overriding fuses
1148 which control the behaviour of the device. The command uses the
1156 config CMD_GPIO_READ
1157 bool "gpio read - save GPIO value to variable"
1160 Enables the 'gpio read' command that saves the value
1161 of a GPIO pin to a variable.
1167 Control PWM channels, this allows invert/config/enable/disable PWM channels.
1170 bool "GPT (GUID Partition Table) command"
1171 select EFI_PARTITION
1172 select PARTITION_UUIDS
1175 Enable the 'gpt' command to ready and write GPT style partition
1178 config CMD_GPT_RENAME
1179 bool "GPT partition renaming commands"
1182 Enables the 'gpt' command to interchange names on two GPT
1183 partitions via the 'gpt swap' command or to rename single
1184 partitions via the 'rename' command.
1187 bool "ide - Support for IDE drivers"
1190 Provides an 'ide' command which allows accessing the IDE drive,
1191 resetting the IDE interface, printing the partition table and
1192 geting device info. It also enables the 'diskboot' command which
1193 permits booting from an IDE drive.
1196 bool "io - Support for performing I/O accesses"
1198 Provides an 'iod' command to display I/O space and an 'iow' command
1199 to write values to the I/O space. This can be useful for manually
1200 checking the state of devices during boot when debugging device
1204 bool "iotrace - Support for tracing I/O activity"
1206 Provides an 'iotrace' command which supports recording I/O reads and
1207 writes in a trace buffer in memory . It also maintains a checksum
1208 of the trace records (even if space is exhausted) so that the
1209 sequence of I/O accesses can be verified.
1211 When debugging drivers it is useful to see what I/O accesses were
1212 done and in what order.
1214 Even if the individual accesses are of little interest it can be
1215 useful to verify that the access pattern is consistent each time
1216 an operation is performed. In this case a checksum can be used to
1217 characterise the operation of a driver. The checksum can be compared
1218 across different runs of the operation to verify that the driver is
1221 In particular, when performing major refactoring of the driver, where
1222 the access pattern should not change, the checksum provides assurance
1223 that the refactoring work has not broken the driver.
1225 This works by sneaking into the io.h heder for an architecture and
1226 redirecting I/O accesses through iotrace's tracing mechanism.
1228 For now no commands are provided to examine the trace buffer. The
1229 format is fairly simple, so 'md' is a reasonable substitute.
1231 Note: The checksum feature is only useful for I/O regions where the
1232 contents do not change outside of software control. Where this is not
1233 suitable you can fall back to manually comparing the addresses. It
1234 might be useful to enhance tracing to only checksum the accesses and
1235 not the data read/written.
1245 bool "w1 - Support for Dallas 1-Wire protocol"
1247 Dallas 1-wire protocol support
1253 Load a binary file over serial line.
1258 Load a binary over memory mapped.
1261 bool "loads - Load a file over serial in S-Record format"
1264 Load an S-Record file over serial line
1267 bool "Echo all characters received during a loads back to console"
1268 depends on CMD_LOADS
1270 If enabled, all characters received during a serial download (using
1271 the "loads" command) are echoed back. This might be needed by some
1272 terminal emulations (like "cu"), but may as well just take time on
1273 others. This sets the initial value of the "loads_echo" environment
1277 bool "saves - Save a file over serial in S-Record format"
1278 depends on CMD_LOADS
1280 Provides a way to save a binary file using the Motorola S-Record
1281 format over the serial line.
1283 config SYS_LOADS_BAUD_CHANGE
1284 bool "Enable a temporary baudrate change during loads/saves command"
1285 depends on CMD_LOADS || CMD_SAVES
1287 config CMD_LOADXY_TIMEOUT
1288 int "loadxy_timeout"
1292 Initial timeout for loadx and loady commands. Zero means infinity.
1296 bool "lsblk - list block drivers and devices"
1298 Print list of available block device drivers, and for each, the list
1299 of known block devices.
1302 bool "MBR (Master Boot Record) command"
1303 select DOS_PARTITION
1305 Enable the 'mbr' command to ready and write MBR (Master Boot Record)
1306 style partition tables.
1312 Enable the command "misc" for accessing miscellaneous devices with
1313 a MISC uclass driver. The command provides listing all MISC devices
1314 as well as read and write functionalities via their drivers.
1320 MMC memory mapped support.
1324 config CMD_BKOPS_ENABLE
1325 bool "mmc bkops enable"
1328 Enable command for setting manual background operations handshake
1329 on a eMMC device. The feature is optionally available on eMMC devices
1330 conforming to standard >= 4.41.
1333 bool "Enable support for reading card registers in the mmc command"
1336 Enable the commands for reading card registers. This is useful
1337 mostly for debugging or extracting details from the card.
1340 bool "Enable support for RPMB in the mmc command"
1341 depends on SUPPORT_EMMC_RPMB
1343 Enable the commands for reading, writing and programming the
1344 key for the Replay Protection Memory Block partition in eMMC.
1346 config CMD_MMC_SWRITE
1348 depends on MMC_WRITE
1351 Enable support for the "mmc swrite" command to write Android sparse
1360 Enable storage cloning over block devices, useful for
1361 initial flashing by external block device without network
1364 config CMD_OPTEE_RPMB
1365 bool "Enable read/write support on RPMB via OPTEE"
1366 depends on SUPPORT_EMMC_RPMB && OPTEE
1368 Enable the commands for reading, writing persistent named values
1369 in the Replay Protection Memory Block partition in eMMC by
1370 using Persistent Objects in OPTEE
1375 select MTD_PARTITIONS
1377 MTD commands support.
1381 depends on MULTIPLEXER
1383 List, select, and deselect mux controllers on the fly.
1387 default y if NAND_SUNXI
1388 depends on MTD_RAW_NAND
1393 config CMD_NAND_TRIMFFS
1394 bool "nand write.trimffs"
1395 default y if ARCH_SUNXI
1397 Allows one to skip empty pages when flashing something on a NAND.
1399 config CMD_NAND_LOCK_UNLOCK
1400 bool "nand lock/unlock"
1402 NAND locking support.
1404 config CMD_NAND_TORTURE
1407 NAND torture support.
1416 NVM Express device support
1419 bool "onenand - access to onenand device"
1422 OneNAND is a brand of NAND ('Not AND' gate) flash which provides
1423 various useful features. This command allows reading, writing,
1424 and erasing blocks. It allso provides a way to show and change
1425 bad blocks, and test the device.
1427 config USE_ONENAND_BOARD_INIT
1428 bool "Call onenand_board_init() in the onenand command"
1429 depends on CMD_ONENAND
1434 Enable the 'osd' command which allows to query information from and
1435 write text data to a on-screen display (OSD) device; a virtual device
1436 associated with a display capable of displaying a text overlay on the
1437 display it's associated with..
1441 depends on PARTITIONS
1442 select PARTITION_UUIDS
1444 Read and display information about the partition table on
1448 bool "pci - Access PCI devices"
1450 Provide access to PCI (Peripheral Interconnect Bus), a type of bus
1451 used on some devices to allow the CPU to communicate with its
1452 peripherals. Sub-commands allow bus enumeration, displaying and
1453 changing configuration space and a few other features.
1456 bool "pci_mps - Configure PCI device MPS"
1459 Enables PCI Express Maximum Packet Size (MPS) tuning. This
1460 command configures the PCI Express MPS of each endpoint to the
1461 largest value supported by all devices below the root complex.
1462 The Maximum Read Request Size will not be altered. This method is
1463 the same algorithm as used by Linux pci=pcie_bus_safe.
1466 bool "pinmux - show pins muxing"
1468 default y if PINCTRL
1470 Parse all available pin-controllers and show pins muxing. This
1471 is useful for debug purpoer to check the pin muxing and to know if
1472 a pin is configured as a GPIO or as an alternate function.
1477 Poweroff/Shutdown the system
1480 bool "read - Read binary data from a partition"
1482 Provides low-level access to the data in a partition.
1484 config CMD_REMOTEPROC
1486 depends on REMOTEPROC
1488 Support for Remote Processor control
1491 bool "sata - Access SATA subsystem"
1494 SATA (Serial Advanced Technology Attachment) is a serial bus
1495 standard for connecting to hard drives and other storage devices.
1496 This command provides information about attached devices and allows
1497 reading, writing and other operations.
1499 SATA replaces PATA (originally just ATA), which stands for Parallel AT
1500 Attachment, where AT refers to an IBM AT (Advanced Technology)
1501 computer released in 1984.
1504 bool "scsi - Access to SCSI devices"
1508 This provides a 'scsi' command which provides access to SCSI (Small
1509 Computer System Interface) devices. The command provides a way to
1510 scan the bus, reset the bus, read and write data and get information
1514 bool "sdram - Print SDRAM configuration information"
1516 Provides information about attached SDRAM. This assumed that the
1517 SDRAM has an EEPROM with information that can be read using the
1518 I2C bus. This is only available on some boards.
1522 depends on DM_SPI_FLASH || SPI_FLASH
1523 default y if DM_SPI_FLASH
1528 bool "sf test - Allow testing of SPI flash"
1531 Provides a way to test that SPI flash is working correctly. The
1532 test is destructive, in that an area of SPI flash must be provided
1533 for the test to use. Performance information is also provided,
1534 measuring the performance of reading, writing and erasing in
1535 Mbps (Million Bits Per Second). This value should approximately
1536 equal the SPI bus speed for a single-bit-wide SPI bus, assuming
1537 everything is working properly.
1540 bool "sspi - Command to access spi device"
1543 SPI utility command.
1545 config DEFAULT_SPI_BUS
1546 int "default spi bus used by sspi command"
1550 config DEFAULT_SPI_MODE
1551 hex "default spi mode used by sspi command (see include/spi.h)"
1555 config CMD_TEMPERATURE
1556 bool "temperature - display the temperature from thermal sensors"
1557 depends on DM_THERMAL
1559 Provides a way to list thermal sensors and to get their readings.
1562 bool "tsi148 - Command to access tsi148 device"
1564 This provides various sub-commands to initialise and configure the
1565 Turndra tsi148 device. See the command help for full details.
1568 bool "ufs - Universal Flash Storage commands"
1571 "This provides commands to initialise and configure universal flash
1575 bool "universe - Command to set up the Turndra Universe controller"
1577 This allows setting up the VMEbus provided by this controller.
1578 See the command help for full details.
1588 select USB_FUNCTION_SDP
1590 Enables the command "sdp" which is used to have U-Boot emulating the
1591 Serial Download Protocol (SDP) via USB.
1597 Enable the command "rkmtd" to create a virtual block device to transfer
1598 Rockchip boot block data to and from NAND with block orientated tools
1599 like "ums" and "rockusb".
1603 depends on USB_FUNCTION_ROCKUSB
1605 Rockusb protocol is widely used by Rockchip SoC based devices. It can
1606 read/write info, image to/from devices. This enable rockusb command
1607 support to communication with rockusb device. for more detail about
1608 this command, please read doc/README.rockusb.
1610 config CMD_USB_MASS_STORAGE
1611 bool "UMS usb mass storage"
1612 depends on USB_GADGET_DOWNLOAD
1613 select USB_FUNCTION_MASS_STORAGE
1614 depends on BLK && USB_GADGET
1616 Enables the command "ums" and the USB mass storage support to the
1617 export a block device: U-Boot, the USB device, acts as a simple
1618 external hard drive plugged on the host USB port.
1620 config CMD_UMS_ABORT_KEYED
1621 bool "UMS abort with any key"
1622 depends on CMD_USB_MASS_STORAGE
1624 Allow interruption of usb mass storage run with any key pressed.
1627 bool "Xen para-virtualized block device"
1631 Xen para-virtualized block device support
1638 VirtIO block device support
1644 This provides commands to control the watchdog timer devices.
1647 bool "write - Write binary data to a partition"
1649 Provides low-level write access to a partition.
1655 Enable the command "axi" for accessing AXI (Advanced eXtensible
1656 Interface) busses, a on-chip interconnect specification for managing
1657 functional blocks in SoC designs, which is also often used in designs
1658 involving FPGAs (e.g. communication with IP cores in Xilinx FPGAs).
1662 menu "Shell scripting commands"
1667 Print file to standard output
1673 Echo args to console
1679 Return true/false on integer compare.
1685 Run script from memory
1691 Evaluate boolean and math expressions and store the result in an env
1693 Also supports loading the value at a memory location into a variable.
1694 If CONFIG_REGEX is enabled, setexpr also supports a gsub function.
1696 config CMD_SETEXPR_FMT
1698 depends on CMD_SETEXPR
1700 Evaluate format string expression and store result in an environment
1706 Print file as hexdump to standard output
1710 menu "Android support commands"
1712 config CMD_AB_SELECT
1714 depends on ANDROID_AB
1716 On Android devices with more than one boot slot (multiple copies of
1717 the kernel and system images) this provides a command to select which
1718 slot should be used to boot from and register the boot attempt. This
1719 is used by the new A/B update model where one slot is updated in the
1720 background while running from the other slot.
1727 bool "Network commands"
1736 bootp - boot image via network using BOOTP/TFTP protocol
1740 depends on CMD_BOOTP
1742 Boot image via network using DHCP/TFTP protocol
1748 Boot image via network using DHCPv6/TFTP protocol using IPv6.
1750 Will perform 4-message exchange with DHCPv6 server, requesting
1751 the minimum required options to TFTP boot. Complies with RFC 8415.
1753 config BOOTP_MAY_FAIL
1754 bool "Allow for the BOOTP/DHCP server to not be found"
1755 depends on CMD_BOOTP
1757 If the DHCP server is not found after the configured retry count, the
1758 call will fail instead of starting over. This can be used to fail
1759 over to Link-local IP address configuration if the DHCP server is not
1762 config BOOTP_BOOTPATH
1763 bool "Request & store 'rootpath' from BOOTP/DHCP server"
1765 depends on CMD_BOOTP
1767 Even though the config is called BOOTP_BOOTPATH, it stores the
1768 path in the variable 'rootpath'.
1770 config BOOTP_VENDOREX
1771 bool "Support vendor extensions from BOOTP/DHCP server"
1772 depends on CMD_BOOTP
1774 config BOOTP_BOOTFILESIZE
1775 bool "Request & store 'bootfilesize' from BOOTP/DHCP server"
1776 depends on CMD_BOOTP
1779 bool "Request & store 'dnsip' from BOOTP/DHCP server"
1781 depends on CMD_BOOTP
1783 The primary DNS server is stored as 'dnsip'. If two servers are
1784 returned, you must set BOOTP_DNS2 to store that second server IP
1788 bool "Store 'dnsip2' from BOOTP/DHCP server"
1789 depends on BOOTP_DNS
1791 If a DHCP client requests the DNS server IP from a DHCP server,
1792 it is possible that more than one DNS serverip is offered to the
1793 client. If CONFIG_BOOTP_DNS2 is enabled, the secondary DNS
1794 server IP will be stored in the additional environment
1795 variable "dnsip2". The first DNS serverip is always
1796 stored in the variable "dnsip", when BOOTP_DNS is defined.
1798 config BOOTP_GATEWAY
1799 bool "Request & store 'gatewayip' from BOOTP/DHCP server"
1801 depends on CMD_BOOTP
1803 config BOOTP_HOSTNAME
1804 bool "Request & store 'hostname' from BOOTP/DHCP server"
1806 depends on CMD_BOOTP
1808 The name may or may not be qualified with the local domain name.
1810 config BOOTP_PREFER_SERVERIP
1811 bool "serverip variable takes precedent over DHCP server IP."
1812 depends on CMD_BOOTP
1814 By default a BOOTP/DHCP reply will overwrite the 'serverip' variable.
1816 With this option enabled, the 'serverip' variable in the environment
1817 takes precedence over DHCP server IP and will only be set by the DHCP
1818 server if not already set in the environment.
1820 config BOOTP_SUBNETMASK
1821 bool "Request & store 'netmask' from BOOTP/DHCP server"
1823 depends on CMD_BOOTP
1825 config BOOTP_NISDOMAIN
1826 bool "Request & store 'nisdomain' from BOOTP/DHCP server"
1827 depends on CMD_BOOTP
1829 config BOOTP_NTPSERVER
1830 bool "Request & store 'ntpserverip' from BOOTP/DHCP server"
1831 depends on CMD_BOOTP
1833 config BOOTP_TIMEOFFSET
1834 bool "Request & store 'timeoffset' from BOOTP/DHCP server"
1835 depends on CMD_BOOTP && CMD_SNTP
1840 Selecting this will allow capturing all Ethernet packets and store
1841 them in physical memory in a PCAP formated file,
1842 later to be analyzed by PCAP reader application (IE. WireShark).
1845 bool "Send PXE client arch to BOOTP/DHCP server"
1847 depends on CMD_BOOTP && CMD_PXE
1849 Supported for ARM, ARM64, and x86 for now.
1851 config BOOTP_PXE_CLIENTARCH
1853 depends on BOOTP_PXE
1854 default 0x16 if ARM64
1858 config BOOTP_PXE_DHCP_OPTION
1859 bool "Request & store 'pxe_configfile' from BOOTP/DHCP server"
1860 depends on BOOTP_PXE
1862 config BOOTP_VCI_STRING
1864 depends on CMD_BOOTP
1865 default "U-Boot.armv7" if CPU_V7A || CPU_V7M || CPU_V7R
1866 default "U-Boot.armv8" if ARM64
1867 default "U-Boot.arm" if ARM
1872 config DHCP6_PXE_CLIENTARCH
1874 default 0x16 if ARM64
1878 config DHCP6_PXE_DHCP_OPTION
1879 bool "Request & store 'pxe_configfile' from DHCP6 server"
1881 config DHCP6_ENTERPRISE_ID
1882 int "Enterprise ID to send in DHCPv6 Vendor Class Option"
1891 tftpboot - load file via network using TFTP protocol
1895 depends on CMD_TFTPBOOT
1897 TFTP put command, for uploading files to a server
1901 depends on CMD_TFTPBOOT
1903 Act as a TFTP server and boot the first received file
1905 config NET_TFTP_VARS
1906 bool "Control TFTP timeout and count through environment"
1907 depends on CMD_TFTPBOOT
1910 If set, allows controlling the TFTP timeout through the
1911 environment variable tftptimeout, and the TFTP maximum
1912 timeout count through the variable tftptimeoutcountmax.
1913 If unset, timeout and maximum are hard-defined as 1 second
1914 and 10 timouts per TFTP transfer.
1919 Boot image via network using RARP/TFTP protocol
1924 Boot image via network using NFS protocol.
1927 int "Timeout in milliseconds for NFS mounts"
1931 Timeout in milliseconds used in NFS protocol. If you encounter
1932 "ERROR: Cannot umount" in nfs command, try longer timeout such as
1935 config SYS_DISABLE_AUTOLOAD
1936 bool "Disable automatically loading files over the network"
1937 depends on CMD_BOOTP || CMD_DHCP || CMD_NFS || CMD_RARP
1939 Typically, commands such as "dhcp" will attempt to automatically
1940 load a file from the network, once the initial network configuration
1941 is complete. Enable this option to disable this behavior and instead
1942 require files to be loaded over the network by subsequent commands.
1948 wget is a simple command to download kernel, or other files,
1949 from a http server over TCP.
1955 If set, allows 802.3(clause 22) MII Management functions interface access
1956 The management interface specified in Clause 22 provides
1957 a simple, two signal, serial interface to connect a
1958 Station Management entity and a managed PHY for providing access
1959 to management parameters and services.
1960 The interface is referred to as the MII management interface.
1963 bool "Call mii_init() in the mii command"
1964 depends on CMD_MII && (MPC8XX_FEC || FSLDMAFE || MCFFEC)
1970 If set, allows Enable 802.3(clause 45) MDIO interface registers access
1971 The MDIO interface is orthogonal to the MII interface and extends
1972 it by adding access to more registers through indirect addressing.
1977 Send ICMP ECHO_REQUEST to network host
1982 default y if (CMD_PING && IPV6)
1984 Send ICMPv6 ECHO_REQUEST to network host
1989 Perform CDP network configuration
1995 Synchronize RTC via network
2000 Lookup the IP of a hostname
2002 config CMD_LINK_LOCAL
2006 Acquire a network IP address using the link-local protocol
2012 Manually configure the attached NIC via NC-SI.
2013 Normally this happens automatically before other network
2016 config IPV6_ROUTER_DISCOVERY
2017 bool "Do IPv6 router discovery"
2020 Will automatically perform router solicitation on first IPv6
2027 Allow control of L2 Ethernet switch commands. These are supported
2028 by the vsc9953 Ethernet driver at present. Sub-commands allow
2029 operations such as enabling / disabling a port and
2030 viewing/maintaining the filtering database (FDB)
2036 Boot image via network using PXE protocol
2041 Wait for wake-on-lan Magic Packet
2045 menu "Misc commands"
2050 This is a simple sliding block puzzle game designed by Italian web
2051 developer Gabriele Cirulli. The game's objective is to slide numbered
2052 tiles on a grid to combine them to create a tile with the number
2055 This needs ANSI support on your terminal to work. It is not fully
2056 functional on a video device.
2059 bool "Enable 'bmp' command"
2063 This provides a way to obtain information about a BMP-format image
2064 and to display it. BMP (which presumably stands for BitMaP) is a
2065 file format defined by Microsoft which supports images of various
2066 depths, formats and compression methods. Headers on the file
2067 determine the formats used. This command can be used by first loading
2068 the image into RAM, then using this command to look at it or display
2071 config CMD_BOOTCOUNT
2073 depends on BOOTCOUNT_LIMIT
2075 Enable the bootcount command, which allows interrogation and
2076 reset of the bootcounter.
2079 bool "Enable board-specific commands"
2081 (deprecated: instead, please define a Kconfig option for each command)
2083 Some boards have board-specific commands which are only enabled
2084 during developemnt and need to be turned off for production. This
2085 option provides a way to control this. The commands that are enabled
2086 vary depending on the board.
2088 config CMD_BLOCK_CACHE
2089 bool "blkcache - control and stats for block cache"
2090 depends on BLOCK_CACHE
2091 default y if BLOCK_CACHE
2093 Enable the blkcache command, which can be used to control the
2094 operation of the cache functions.
2095 This is most useful when fine-tuning the operation of the cache
2096 during development, but also allows the cache to be disabled when
2097 it might hurt performance (e.g. when using the ums command).
2100 bool "blkmap - Composable virtual block devices"
2104 Create virtual block devices that are backed by various sources,
2105 e.g. RAM, or parts of an existing block device. Though much more
2106 rudimentary, it borrows a lot of ideas from Linux's device mapper
2110 - Treat a region of RAM as a block device, i.e. a RAM disk. This let's
2111 you extract files from filesystem images stored in RAM (perhaps as a
2112 result of a TFTP transfer).
2113 - Create a virtual partition on an existing device. This let's you
2114 access filesystems that aren't stored at an exact partition
2115 boundary. A common example is a filesystem image embedded in an FIT
2123 Enable the 'button' command which allows to get the status of
2124 buttons supported by the board. The buttonss can be listed with
2125 'button list' and state can be known with 'button <label>'.
2126 Any button drivers can be controlled with this command, e.g.
2130 bool "icache or dcache"
2132 Enable the "icache" and "dcache" commands
2134 config CMD_CONITRACE
2135 bool "conitrace - trace console input codes"
2137 Enable the 'conitrace' command which displays the codes received
2138 from the console input as hexadecimal numbers.
2141 bool "Enable clear screen command 'cls'"
2142 default y if LCD || VIDEO
2144 Enable the 'cls' command which clears the screen contents
2145 on video frame buffer.
2148 bool "efidebug - display/configure UEFI environment"
2149 depends on EFI_LOADER
2150 select EFI_DEVICE_PATH_TO_TEXT
2152 Enable the 'efidebug' command which provides a subset of UEFI
2153 shell utility with simplified functionality. It will be useful
2154 particularly for managing boot parameters as well as examining
2155 various EFI status for debugging.
2157 config CMD_EFICONFIG
2158 bool "eficonfig - provide menu-driven uefi variables maintenance interface"
2159 default y if !HAS_BOARD_SIZE_LIMIT
2160 depends on EFI_BOOTMGR
2163 Enable the 'eficonfig' command which provides the menu-driven UEFI
2164 variable maintenance interface.
2166 config CMD_EXCEPTION
2167 bool "exception - raise exception"
2168 depends on ARM || RISCV || SANDBOX || X86
2170 Enable the 'exception' command which allows to raise an exception.
2177 Enable the 'led' command which allows for control of LEDs supported
2178 by the board. The LEDs can be listed with 'led list' and controlled
2179 with led on/off/togle/blink. Any LED drivers can be controlled with
2180 this command, e.g. led_gpio.
2185 Enable the 'ini' command which allows a .ini file to be parsed and
2186 placed into environment variables. Please check the source code for
2187 this as there is no documentation.
2194 Enable the 'date' command for getting/setting the time/date in RTC
2201 Enable the 'rtc' command for low-level access to RTC devices.
2206 Run commands and summarize execution time.
2209 bool "gettime - read elapsed time"
2211 Enable the 'gettime' command which reads the elapsed time since
2212 U-Boot started running. This shows the time in seconds and
2213 milliseconds. See also the 'bootstage' command which provides more
2214 flexibility for boot timing.
2217 bool "pause command"
2219 Delay execution waiting for any user input.
2220 Useful to allow the user to read a failure log.
2225 default y if SANDBOX
2228 Print bytes from the hardware random number generator.
2230 config CMD_KASLRSEED
2234 Set the kaslr-seed in the chosen node with entropy provided by a
2235 hardware random number generator.
2241 Delay execution for some time
2244 bool "support for multiprocessor commands"
2248 This enables commands to bringup different processors
2249 in multiprocessor cases.
2254 Access the system timer.
2260 This provides basic access to the U-Boot's sound support. The main
2261 feature is to play a beep.
2263 sound init - set up sound system
2264 sound play - play a sound
2270 Boot image via local extlinux.conf file
2275 default y if TARGET_QEMU_ARM_32BIT || TARGET_QEMU_ARM_64BIT || \
2276 TARGET_QEMU_X86 || TARGET_QEMU_X86_64
2278 This provides access to the QEMU firmware interface. The main
2279 feature is to allow easy loading of files passed to qemu-system
2280 via -kernel / -initrd
2285 This provides access to Linux PStore with Rammoops backend. The main
2286 feature is to allow to display or save PStore records.
2288 See doc/pstore.rst for more information.
2292 config CMD_PSTORE_MEM_ADDR
2293 hex "Memory Address"
2294 depends on CMD_PSTORE
2296 Base addr used for PStore ramoops memory, should be identical to
2297 ramoops.mem_address parameter used by kernel
2299 config CMD_PSTORE_MEM_SIZE
2301 depends on CMD_PSTORE
2304 Size of PStore ramoops memory, should be identical to ramoops.mem_size
2305 parameter used by kernel, a power of 2 and larger than the sum of the
2308 config CMD_PSTORE_RECORD_SIZE
2309 hex "Dump record size"
2310 depends on CMD_PSTORE
2313 Size of each dump done on oops/panic, should be identical to
2314 ramoops.record_size parameter used by kernel and a power of 2
2317 config CMD_PSTORE_CONSOLE_SIZE
2318 hex "Kernel console log size"
2319 depends on CMD_PSTORE
2322 Size of kernel console log, should be identical to
2323 ramoops.console_size parameter used by kernel and a power of 2
2326 config CMD_PSTORE_FTRACE_SIZE
2327 hex "FTrace log size"
2328 depends on CMD_PSTORE
2331 Size of ftrace log, should be identical to ramoops.ftrace_size
2332 parameter used by kernel and a power of 2
2334 config CMD_PSTORE_PMSG_SIZE
2335 hex "User space message log size"
2336 depends on CMD_PSTORE
2339 Size of user space message log, should be identical to
2340 ramoops.pmsg_size parameter used by kernel and a power of 2
2342 config CMD_PSTORE_ECC_SIZE
2344 depends on CMD_PSTORE
2347 if non-zero, the option enables ECC support and specifies ECC buffer
2348 size in bytes (1 is a special value, means 16 bytes ECC), should be
2349 identical to ramoops.ramoops_ecc parameter used by kernel
2353 source "cmd/mvebu/Kconfig"
2356 bool "terminal - provides a way to attach a serial terminal"
2358 Provides a 'cu'-like serial terminal command. This can be used to
2359 access other serial ports from the system console. The terminal
2360 is very simple with no special processing of characters. As with
2361 cu, you can press ~. (tilde followed by period) to exit.
2364 bool "uuid, guid - generation of unique IDs"
2367 This enables two commands:
2369 uuid - generate random Universally Unique Identifier
2370 guid - generate Globally Unique Identifier based on random UUID
2372 The two commands are very similar except for the endianness of the
2375 config CMD_VIDCONSOLE
2376 bool "lcdputs and setcurs"
2380 Enabling this will provide 'setcurs' and 'lcdputs' commands which
2381 support cursor positioning and drawing strings on the video
2382 console (framebuffer).
2384 The name 'lcdputs' is a bit of a misnomer, but so named because the
2385 video device is often an LCD.
2387 config CMD_SELECT_FONT
2388 bool "select font size"
2390 default y if CONSOLE_TRUETYPE
2392 Enabling this will provide 'font' command.
2393 Allows font selection at runtime.
2397 source "cmd/ti/Kconfig"
2399 config CMD_BOOTSTAGE
2400 bool "Enable the 'bootstage' command"
2401 depends on BOOTSTAGE
2403 Add a 'bootstage' command which supports printing a report
2404 and un/stashing of bootstage data.
2406 menu "Power commands"
2408 bool "Enable Driver Model PMIC command"
2411 This is the pmic command, based on a driver model pmic's API.
2412 Command features are unchanged:
2413 - list - list pmic devices
2414 - pmic dev <id> - show or [set] operating pmic device (NEW)
2415 - pmic dump - dump registers
2416 - pmic read address - read byte of register at address
2417 - pmic write address - write byte to register at address
2418 The only one change for this command is 'dev' subcommand.
2420 config CMD_REGULATOR
2421 bool "Enable Driver Model REGULATOR command"
2422 depends on DM_REGULATOR
2424 This command is based on driver model regulator's API.
2425 User interface features:
2426 - list - list regulator devices
2427 - regulator dev <id> - show or [set] operating regulator device
2428 - regulator info - print constraints info
2429 - regulator status - print operating status
2430 - regulator value <val] <-f> - print/[set] voltage value [uV]
2431 - regulator current <val> - print/[set] current value [uA]
2432 - regulator mode <id> - print/[set] operating mode id
2433 - regulator enable - enable the regulator output
2434 - regulator disable - disable the regulator output
2436 The '-f' (force) option can be used for set the value which exceeds
2437 the limits, which are found in device-tree and are kept in regulator's
2438 uclass plat structure.
2442 menu "Security commands"
2444 bool "Enable the 'aes' command"
2447 This provides a means to encrypt and decrypt data using the AES
2448 (Advanced Encryption Standard). This algorithm uses a symetric key
2449 and is widely used as a streaming cipher. Different key lengths are
2450 supported by the algorithm but this command only supports 128 bits
2454 bool "Enable the 'blob' command"
2455 depends on !MX6ULL && !MX6SLL && !MX6SL
2456 select IMX_HAB if ARCH_MX6 || ARCH_MX7 || ARCH_MX7ULP || ARCH_IMX8M
2458 This is used with the Freescale secure boot mechanism.
2460 Freescale's SEC block has built-in Blob Protocol which provides
2461 a method for protecting user-defined data across system power
2462 cycles. SEC block protects data in a data structure called a Blob,
2463 which provides both confidentiality and integrity protection.
2465 Encapsulating data as a blob
2466 Each time that the Blob Protocol is used to protect data, a
2467 different randomly generated key is used to encrypt the data.
2468 This random key is itself encrypted using a key which is derived
2469 from SoC's non-volatile secret key and a 16 bit Key identifier.
2470 The resulting encrypted key along with encrypted data is called a
2471 blob. The non-volatile secure key is available for use only during
2474 During decapsulation, the reverse process is performed to get back
2478 blob enc - encapsulating data as a cryptgraphic blob
2479 blob dec - decapsulating cryptgraphic blob to get the data
2483 blob enc src dst len km
2485 Encapsulate and create blob of data $len bytes long
2486 at address $src and store the result at address $dst.
2487 $km is the 16 byte key modifier is also required for
2488 generation/use as key for cryptographic operation. Key
2489 modifier should be 16 byte long.
2491 blob dec src dst len km
2493 Decapsulate the blob of data at address $src and
2494 store result of $len byte at addr $dst.
2495 $km is the 16 byte key modifier is also required for
2496 generation/use as key for cryptographic operation. Key
2497 modifier should be 16 byte long.
2500 bool "Support 'hash' command"
2503 This provides a way to hash data in memory using various supported
2504 algorithms (such as SHA1, MD5, CRC32). The computed digest can be
2505 saved to memory or to an environment variable. It is also possible
2506 to verify a hash against data in memory.
2509 bool "Support the 'hvc' command"
2510 depends on ARM_SMCCC
2512 Allows issuing Hypervisor Calls (HVCs). Mostly useful for
2513 development and testing.
2516 bool "Support the 'smc' command"
2517 depends on ARM_SMCCC
2519 Allows issuing Secure Monitor Calls (SMCs). Mostly useful for
2520 development and testing.
2526 Add -v option to verify data against a hash.
2529 bool "scp03 - SCP03 enable and rotate/provision operations"
2532 This command provides access to a Trusted Application
2533 running in a TEE to request Secure Channel Protocol 03
2534 (SCP03) enablement and/or rotation of its SCP03 keys.
2543 bool "Enable the 'tpm' command"
2544 depends on TPM_V1 || TPM_V2
2545 select CMD_TPM_V1 if TPM_V1
2546 select CMD_TPM_V2 if TPM_V2
2548 This provides a means to talk to a TPM from the command line. A wide
2549 range of commands if provided - see 'tpm help' for details. The
2550 command requires a suitable TPM on your board and the correct driver
2556 bool "Enable the 'tpm test' command"
2559 This provides a a series of tests to confirm that the TPMv1.x is
2560 working correctly. The tests cover initialisation, non-volatile RAM,
2561 extend, global lock and checking that timing is within expectations.
2562 The tests pass correctly on Infineon TPMs but may need to be adjusted
2569 menu "Firmware commands"
2571 bool "Enable crosec command"
2575 Enable command-line access to the Chrome OS EC (Embedded
2576 Controller). This provides the 'crosec' command which has
2577 a number of sub-commands for performing EC tasks such as
2578 updating its flash, accessing a small saved context area
2579 and talking to the I2C bus behind the EC (if there is one).
2582 bool "Enable scmi command"
2583 depends on SCMI_FIRMWARE
2586 This command provides user interfaces to several SCMI (System
2587 Control and Management Interface) protocols available on Arm
2588 platforms to manage system resources.
2591 menu "Filesystem commands"
2593 bool "Enable the 'btrsubvol' command"
2596 This enables the 'btrsubvol' command to list subvolumes
2597 of a BTRFS filesystem. There are no special commands for
2598 listing BTRFS directories or loading BTRFS files - this
2599 can be done by the generic 'fs' commands (see CMD_FS_GENERIC)
2600 when BTRFS is enabled (see FS_BTRFS).
2603 bool "Enable the 'cbfs' command"
2606 Define this to enable support for reading from a Coreboot
2607 filesystem. This is a ROM-based filesystem used for accessing files
2608 on systems that use coreboot as the first boot-loader and then load
2609 U-Boot to actually boot the Operating System. Available commands are
2610 cbfsinit, cbfsinfo, cbfsls and cbfsload.
2613 bool "Enable the 'cramfs' command"
2614 depends on FS_CRAMFS
2616 This provides commands for dealing with CRAMFS (Compressed ROM
2617 filesystem). CRAMFS is useful when space is tight since files are
2618 compressed. Two commands are provided:
2620 cramfsls - lists files in a cramfs image
2621 cramfsload - loads a file from a cramfs image
2624 bool "EROFS command support"
2627 Support for the EROFS fs
2630 bool "ext2 command support"
2633 Enables EXT2 FS command
2636 bool "ext4 command support"
2639 Enables EXT4 FS command
2641 config CMD_EXT4_WRITE
2643 bool "ext4 write command support"
2646 Enables EXT4 FS write command
2649 bool "FAT command support"
2652 Support for the FAT fs
2655 bool "SquashFS command support"
2658 Enables SquashFS filesystem commands (e.g. load, ls).
2660 config CMD_FS_GENERIC
2661 bool "filesystem commands"
2663 Enables filesystem commands (e.g. load, ls) that work for multiple
2667 bool "fsuuid command"
2669 Enables fsuuid command for filesystem UUID.
2672 bool "jffs2 command"
2675 Enables commands to support the JFFS2 (Journalling Flash File System
2676 version 2) filesystem. This enables fsload, ls and fsinfo which
2677 provide the ability to load files, list directories and obtain
2678 filesystem information.
2681 string "Default device for JFFS2"
2682 depends on CMD_JFFS2
2685 The default device to use with the jffs2 command.
2687 config JFFS2_PART_OFFSET
2688 hex "Default offset within flash to locate the JFFS2 image"
2689 depends on CMD_JFFS2
2692 The default offset within flash to locate the JFFS2 image.
2694 config JFFS2_PART_SIZE
2695 hex "Default size of JFFS2 partition"
2696 depends on CMD_JFFS2
2699 The default size of the JFFS2 partition
2702 bool "MTD partition support"
2705 MTD partitioning tool support.
2706 It is strongly encouraged to avoid using this command
2707 anymore along with 'sf', 'nand', 'onenand'. One can still
2708 declare the partitions in the mtdparts environment variable
2709 but better use the MTD stack and the 'mtd' command instead.
2711 config CMD_MTDPARTS_SPREAD
2712 bool "Padd partition size to take account of bad blocks"
2713 depends on CMD_MTDPARTS
2715 This enables the 'spread' sub-command of the mtdparts command.
2716 This command will modify the existing mtdparts variable by increasing
2717 the size of the partitions such that 1) each partition's net size is
2718 at least as large as the size specified in the mtdparts variable and
2719 2) each partition starts on a good block.
2721 config CMD_MTDPARTS_SHOW_NET_SIZES
2722 bool "Show net size (w/o bad blocks) of partitions"
2723 depends on CMD_MTDPARTS
2725 Adds two columns to the printed partition table showing the
2726 effective usable size of a partition, if bad blocks are taken
2729 config MTDIDS_DEFAULT
2730 string "Default MTD IDs"
2731 depends on MTD || SPI_FLASH
2732 depends on !SYS_MTDPARTS_RUNTIME
2734 Defines a default MTD IDs list for use with MTD partitions in the
2735 Linux MTD command line partitions format.
2737 config MTDPARTS_DEFAULT
2738 string "Default MTD partition scheme"
2739 depends on MTD || SPI_FLASH
2740 depends on !SYS_MTDPARTS_RUNTIME
2742 Defines a default MTD partitioning scheme in the Linux MTD command
2743 line partitions format
2746 bool "reiser - Access to reiserfs filesystems"
2748 This provides two commands which operate on a resierfs filesystem,
2749 commonly used some years ago:
2751 reiserls - list files
2752 reiserload - load a file
2755 bool "yaffs2 - Access of YAFFS2 filesystem"
2759 This provides commands for accessing a YAFFS2 filesystem. Yet
2760 Another Flash Filesystem 2 is a filesystem designed specifically
2761 for NAND flash. It incorporates bad-block management and ensures
2762 that device writes are sequential regardless of filesystem
2766 bool "zfs - Access of ZFS filesystem"
2768 This provides commands to accessing a ZFS filesystem, commonly used
2769 on Solaris systems. Two sub-commands are provided:
2771 zfsls - list files in a directory
2772 zfsload - load a file
2774 See doc/README.zfs for more details.
2778 menu "Debug commands"
2780 config CMD_CBSYSINFO
2783 default y if SYS_COREBOOT
2785 This provides information about the coreboot sysinfo table stored in
2786 memory by coreboot before jumping to U-Boot. It can be useful for
2787 debugging the beaaviour of coreboot or U-Boot.
2790 bool "cyclic - Show information about cyclic functions"
2794 This enables the 'cyclic' command which provides information about
2795 cyclic execution functions. This infrastructure allows registering
2796 functions to be executed cyclically, e.g. every 100ms. These commands
2799 cyclic list - list cyclic functions
2800 cyclic cyclic demo <cycletime_ms> <delay_us> - register cyclic
2803 See doc/develop/cyclic.rst for more details.
2806 bool "diag - Board diagnostics"
2808 This command provides access to board diagnostic tests. These are
2809 called Power-on Self Tests (POST). The command allows listing of
2810 available tests and running either all the tests, or specific tests
2814 bool "event - Show information about events"
2816 default y if EVENT_DEBUG
2818 This enables the 'event' command which provides information about
2819 events and event-handler routines. This can help to device event
2823 bool "irq - Show information about interrupts"
2824 depends on !ARM && !MIPS && !RISCV && !SH
2826 This enables two commands:
2828 interrupts - enable or disable interrupts
2829 irqinfo - print device-specific interrupt information
2832 bool "kgdb - Allow debugging of U-Boot with gdb"
2835 This enables a 'kgdb' command which allows gdb to connect to U-Boot
2836 over a serial link for debugging purposes. This allows
2837 single-stepping, inspecting variables, etc. This is supported only
2838 on PowerPC at present.
2841 bool "log - Generation, control and access to logging"
2845 This provides access to logging features. It allows the output of
2846 log data to be controlled to a limited extent (setting up the default
2847 maximum log level for emitting of records). It also provides access
2848 to a command used for testing the log system.
2851 bool "trace - Support tracing of function calls and timing"
2855 Enables a command to control using of function tracing within
2856 U-Boot. This allows recording of call traces including timing
2857 information. The command can write data to memory for exporting
2858 for analysis (e.g. using bootchart). See doc/README.trace for full
2862 bool "avb - Android Verified Boot 2.0 operations"
2863 depends on AVB_VERIFY
2865 Enables a "avb" command to perform verification of partitions using
2866 Android Verified Boot 2.0 functionality. It includes such subcommands:
2867 avb init - initialize avb2 subsystem
2868 avb read_rb - read rollback index
2869 avb write_rb - write rollback index
2870 avb is_unlocked - check device lock state
2871 avb get_uuid - read and print uuid of a partition
2872 avb read_part - read data from partition
2873 avb read_part_hex - read data from partition and output to stdout
2874 avb write_part - write data to partition
2875 avb verify - run full verification chain
2877 config CMD_STACKPROTECTOR_TEST
2878 bool "Test command for stack protector"
2879 depends on STACKPROTECTOR
2881 Enable stackprot_test command
2882 The stackprot_test command will force a stack overrun to test
2883 the stack smashing detection mechanisms.
2888 tristate "Enable UBI - Unsorted block images commands"
2891 UBI is a software layer above MTD layer which admits use of LVM-like
2892 logical volumes on top of MTD devices, hides some complexities of
2893 flash chips like wear and bad blocks and provides some other useful
2894 capabilities. Please, consult the MTD web site for more details
2895 (www.linux-mtd.infradead.org). Activate this option if you want
2896 to use U-Boot UBI commands.
2897 It is also strongly encouraged to also enable CONFIG_MTD to get full
2900 config CMD_UBI_RENAME
2901 bool "Enable rename"
2904 Enable a "ubi" command to rename ubi volume:
2905 ubi rename <oldname> <newname>
2908 tristate "Enable UBIFS - Unsorted block images filesystem commands"
2910 default y if CMD_UBI
2914 UBIFS is a file system for flash devices which works on top of UBI.
2916 config MMC_SPEED_MODE_SET
2917 bool "set speed mode using mmc command"
2920 Enable setting speed mode using mmc rescan and mmc dev commands.
2921 The speed mode is provided as the last argument in these commands
2922 and is indicated using the index from enum bus_mode in
2923 include/mmc.h. A speed mode can be set only if it has already
2924 been enabled in the device tree.
2927 bool "Amlogic Meson commands"
2928 depends on ARCH_MESON
2931 Enable useful commands for the Meson Soc family developed by Amlogic Inc.
projects / thirdparty / u-boot.git / blob