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
34 config CMDLINE_PS_SUPPORT
35 bool "Enable support for changing the command prompt string at run-time"
36 depends on HUSH_PARSER
38 Only static string in the prompt is supported so far. The string is
39 obtained from environment variables PS1 and PS2.
42 bool "Enable auto complete using TAB"
46 Enable auto completion of commands using TAB.
49 bool "Enable long help messages"
53 Defined when you want long help messages included
54 Do not set this option when short of memory.
58 default "Zynq> " if ARCH_ZYNQ
59 default "ZynqMP> " if ARCH_ZYNQMP
62 This string is displayed in the command line to the left of the
65 config SYS_PROMPT_HUSH_PS2
66 string "Hush shell secondary prompt"
67 depends on HUSH_PARSER
70 This defines the secondary prompt string, which is
71 printed when the command interpreter needs more input
72 to complete a command. Usually "> ".
75 int "Maximum number arguments accepted by commands"
79 int "Console input buffer size"
80 default 2048 if ARCH_TEGRA || ARCH_VERSAL || ARCH_ZYNQ || ARCH_ZYNQMP || \
81 RCAR_GEN3 || TARGET_SOCFPGA_SOC64
82 default 512 if ARCH_MX5 || ARCH_MX6 || ARCH_MX7 || FSL_LSCH2 || \
84 default 256 if M68K || PPC
88 int "Buffer size for console output"
89 default 1024 if ARCH_SUNXI
93 bool "Command execution tracer"
97 This option enables the possiblity to print all commands before
98 executing them and after all variables are evaluated (similar
99 to Bash's xtrace/'set -x' feature).
100 To enable the tracer a variable "xtrace" needs to be defined in
115 List and dump ACPI tables. ACPI (Advanced Configuration and Power
116 Interface) is used mostly on x86 for providing information to the
117 Operating System about devices in the system. The tables are set up
118 by the firmware, typically U-Boot but possibly an earlier firmware
119 module, if U-Boot is chain-loaded from something else. ACPI tables
120 can also include code, to perform hardware-specific tasks required
121 by the Operating Systems. This allows some amount of separation
122 between the firmware and OS, and is particularly useful when you
123 want to make hardware changes without the OS needing to be adjusted.
130 List non-identity virtual-physical memory mappings for 32-bit CPUs.
138 config CMD_BDINFO_EXTRA
139 bool "bdinfo extra features"
140 default y if SANDBOX || X86
142 Show additional information about the board. This uses a little more
143 code space but provides more options, particularly those useful for
144 bringup, development and debugging.
151 Print ".config" contents.
153 If this option is enabled, the ".config" file contents are embedded
154 in the U-Boot image and can be printed on the console by the "config"
155 command. This provides information of which options are enabled on
162 Print console devices and information.
168 Print information about available CPUs. This normally shows the
169 number of CPUs, type (e.g. manufacturer, architecture, product or
170 internal name) and clock frequency. Other information may be
171 available depending on the CPU driver.
173 config CMD_FWU_METADATA
174 bool "fwu metadata read"
175 depends on FWU_MULTI_BANK_UPDATE
177 Command to read the metadata and dump it's contents
183 Print GPL license text
188 Provides access to the Intel Power-Management Controller (PMC) so
189 that its state can be examined. This does not currently support
190 changing the state but it is still useful for debugging and seeing
199 config CMD_TLV_EEPROM
201 depends on I2C_EEPROM
204 Display and program the system EEPROM data block in ONIE Tlvinfo
205 format. TLV stands for Type-Length-Value.
207 config SPL_CMD_TLV_EEPROM
208 bool "tlv_eeprom for SPL"
209 depends on SPL_I2C_EEPROM
210 select SPL_DRIVERS_MISC
213 Read system EEPROM data block in ONIE Tlvinfo format from SPL.
217 depends on RISCV_SMODE && SBI_V02
219 Display information about the SBI implementation.
229 Run the command stored in the environment "bootcmd", i.e.
230 "bootd" does the same thing as "run bootcmd".
236 Boot an application image from the memory.
238 config CMD_BOOTM_PRE_LOAD
239 bool "enable pre-load on bootm"
241 depends on IMAGE_PRE_LOAD
244 Enable support of stage pre-load for the bootm command.
245 This stage allow to check or modify the image provided
246 to the bootm command.
251 default y if BOOTSTD_FULL
253 Support listing available bootdevs (boot devices) which can provide an
254 OS to boot, as well as showing information about a particular one.
256 This command is not necessary for bootstd to work.
263 Support scanning for bootflows available with the bootdevs. The
264 bootflows can optionally be booted.
266 config CMD_BOOTFLOW_FULL
267 bool "bootflow - extract subcommands"
268 depends on BOOTSTD_FULL
271 Add the ability to list the available bootflows, select one and obtain
272 information about it.
274 This command is not necessary for bootstd to work.
279 default y if BOOTSTD_FULL
281 Support listing available bootmethds (methods used to boot an
282 Operating System), as well as selecting the order that the bootmeths
285 This command is not necessary for bootstd to work.
288 bool "Support booting UEFI FIT images"
289 depends on CMD_BOOTEFI && CMD_BOOTM && FIT
292 Support booting UEFI FIT images via the bootm command.
297 Boot the Linux zImage
301 depends on ARM64 || RISCV
304 Boot an AArch64 Linux Kernel image from memory.
307 bool "Support booting Linux OS images"
308 depends on CMD_BOOTM || CMD_BOOTZ || CMD_BOOTI
311 Support booting the Linux kernel directly via a command such as bootm
315 bool "Support booting NetBSD (non-EFI) loader images"
319 Support booting NetBSD via the bootm command.
321 config BOOTM_OPENRTOS
322 bool "Support booting OPENRTOS / FreeRTOS images"
325 Support booting OPENRTOS / FreeRTOS via the bootm command.
328 bool "Support booting Enea OSE images"
329 depends on (ARM && (ARM64 || CPU_V7A || CPU_V7R) || SANDBOX || PPC || X86)
332 Support booting Enea OSE images via the bootm command.
335 bool "Support booting Plan9 OS images"
339 Support booting Plan9 images via the bootm command.
342 bool "Support booting RTEMS OS images"
346 Support booting RTEMS images via the bootm command.
349 bool "Support read SEAMA NAND images"
350 depends on MTD_RAW_NAND
352 Support reading NAND Seattle Image (SEAMA) images.
355 bool "vbe - Verified Boot for Embedded"
356 depends on BOOTMETH_VBE
357 default y if BOOTSTD_FULL
359 Provides various subcommands related to VBE, such as listing the
360 available methods, looking at the state and changing which method
361 is used to boot. Updating the parameters is not currently
365 bool "Support booting VxWorks OS images"
369 Support booting VxWorks images via the bootm command.
372 hex "Maximum size of a decompresed OS image"
373 depends on CMD_BOOTM || CMD_BOOTI || CMD_BOOTZ || \
374 LEGACY_IMAGE_FORMAT || SPL_LEGACY_IMAGE_FORMAT
375 default 0x4000000 if PPC || ARM64
376 default 0x1000000 if X86 || ARCH_MX6 || ARCH_MX7
379 This is the maximum size of the buffer that is used to decompress the OS
380 image in to, if passing a compressed image to bootm/booti/bootz.
384 depends on EFI_LOADER
387 Boot an EFI image from memory.
389 config CMD_BOOTEFI_HELLO_COMPILE
390 bool "Compile a standard EFI hello world binary for testing"
391 depends on CMD_BOOTEFI && !CPU_V7M
394 This compiles a standard EFI hello world application with U-Boot so
395 that it can be used with the test/py testing framework. This is useful
396 for testing that EFI is working at a basic level, and for bringing
397 up EFI support on a new architecture.
399 No additional space will be required in the resulting U-Boot binary
400 when this option is enabled.
402 config CMD_BOOTEFI_HELLO
403 bool "Allow booting a standard EFI hello world for testing"
404 depends on CMD_BOOTEFI_HELLO_COMPILE
405 default y if CMD_BOOTEFI_SELFTEST
407 This adds a standard EFI hello world application to U-Boot so that
408 it can be used with the 'bootefi hello' command. This is useful
409 for testing that EFI is working at a basic level, and for bringing
410 up EFI support on a new architecture.
412 source lib/efi_selftest/Kconfig
419 Add an ANSI terminal boot menu command.
424 Android DTB/DTBO image manipulation commands. Read dtb/dtbo files from
425 image into RAM, dump image structure information, etc. Those dtb/dtbo
426 files should be merged in one dtb further, which needs to be passed to
427 the kernel, as part of a boot process.
431 depends on ANDROID_BOOT_IMAGE
433 Android Boot Image manipulation commands. Allows one to extract
434 images contained in boot.img, like kernel, ramdisk, dtb, etc, and
435 obtain corresponding meta-information from boot.img.
437 See doc/android/boot-image.rst for details.
440 bool "cedit - Configuration editor"
444 Provides a command to allow editing of board configuration and
445 providing a UI for the user to adjust settings. Subcommands allow
446 loading and saving of configuration as well as showing an editor.
449 bool "bootelf, bootvx"
453 Boot an ELF/vxWorks image from the memory.
456 bool "Flattened Device Tree utility commands"
460 Do FDT related setup before booting into the Operating System.
462 config SUPPORT_EXTENSION_SCAN
466 bool "Extension board management command"
468 depends on SUPPORT_EXTENSION_SCAN
470 Enables the "extension" command, which allows to detect
471 extension boards connected to the system, and apply
472 corresponding Device Tree overlays.
478 Start an application at a given address.
484 Run the command in the given environment variable.
490 Print header information for application image.
495 List all images found in flash
501 Extract a part of a multi-image.
506 Print file as hexdump to standard output
509 bool "spl export - Export boot information for Falcon boot"
512 Falcon mode allows booting directly from SPL into an Operating
513 System such as Linux, thus skipping U-Boot proper. See
514 doc/README.falcon for full information about how to use this
517 config CMD_SPL_NAND_OFS
518 hex "Offset of OS args or dtb for Falcon-mode NAND boot"
519 depends on CMD_SPL && (TPL_NAND_SUPPORT || SPL_NAND_SUPPORT)
522 This provides the offset of the command line arguments for Linux
523 when booting from NAND in Falcon mode. See doc/README.falcon
524 for full information about how to use this option (and also see
525 board/gateworks/gw_ventana/README for an example).
527 config CMD_SPL_NOR_OFS
528 hex "Offset of OS args or dtb for Falcon-mode NOR boot"
529 depends on CMD_SPL && SPL_NOR_SUPPORT
532 This provides the offset of the command line arguments or dtb for
533 Linux when booting from NOR in Falcon mode.
535 config CMD_SPL_WRITE_SIZE
536 hex "Size of argument area"
540 This provides the size of the command-line argument area in NAND
541 flash used by Falcon-mode boot. See the documentation until CMD_SPL
544 config CMD_THOR_DOWNLOAD
545 bool "thor - TIZEN 'thor' download"
548 Implements the 'thor' download protocol. This is a way of
549 downloading a software update over USB from an attached host.
550 There is no documentation about this within the U-Boot source code
551 but you should be able to find something on the interwebs.
553 config THOR_RESET_OFF
554 bool "thor: Disable reset on completion"
555 depends on CMD_THOR_DOWNLOAD
558 bool "zboot - x86 boot command"
560 With x86 machines it is common to boot a bzImage file which
561 contains both a kernel and a setup.bin file. The latter includes
562 configuration information from the dark ages which x86 boards still
563 need to pick things out of.
565 Consider using FIT in preference to this since it supports directly
566 booting both 32- and 64-bit kernels, as well as secure boot.
567 Documentation is available in doc/uImage.FIT/x86-fit-boot.txt
571 menu "Environment commands"
574 bool "ask for env variable"
576 Ask for environment variable
594 Edit environment variable.
599 Allow for searching environment variables
605 Save all environment variables into the compiled-in persistent
610 depends on CMD_SAVEENV
612 Erase environment variables from the compiled-in persistent
615 config CMD_ENV_EXISTS
619 Check if a variable is defined in the environment for use in
622 config CMD_ENV_CALLBACK
623 bool "env callbacks - print callbacks and their associated variables"
625 Some environment variable have callbacks defined by
626 U_BOOT_ENV_CALLBACK. These are called when the variable changes.
627 For example changing "baudrate" adjust the serial baud rate. This
628 command lists the currently defined callbacks.
631 bool "env flags -print variables that have non-default flags"
633 Some environment variables have special flags that control their
634 behaviour. For example, serial# can only be written once and cannot
635 be deleted. This command shows the variables that have special
638 config CMD_NVEDIT_EFI
639 bool "env [set|print] -e - set/print UEFI variables"
640 depends on EFI_LOADER
643 UEFI variables are encoded as some form of U-Boot variables.
644 If enabled, we are allowed to set/print UEFI variables using
645 "env" command with "-e" option without knowing details.
647 config CMD_NVEDIT_INDIRECT
648 bool "env indirect - Sets environment value from another"
650 config CMD_NVEDIT_INFO
651 bool "env info - print or evaluate environment information"
653 Print environment information:
654 - env_valid : is environment valid
655 - env_ready : is environment imported into hash table
656 - env_use_default : is default environment used
658 This command can be optionally used for evaluation in scripts:
659 [-d] : evaluate whether default environment is used
660 [-p] : evaluate whether environment can be persisted
662 The result of multiple evaluations will be combined with AND.
664 config CMD_NVEDIT_LOAD
667 Load all environment variables from the compiled-in persistent
670 config CMD_NVEDIT_SELECT
673 Select the compiled-in persistent storage of environment variables.
677 menu "Memory commands"
682 Compute binary operations (xor, or, and) of byte arrays of arbitrary
683 size from memory and store the result in memory or the environment.
687 default y if BLOBLIST
689 Show information about the bloblist, a collection of binary blobs
690 held in memory that persist between SPL and U-Boot. In the case of
691 x86 devices the bloblist can be used to hold ACPI tables so that they
692 remain available in memory.
705 Add -v option to verify data against a crc32 checksum.
708 bool "eeprom - EEPROM subsystem"
710 (deprecated, needs conversion to driver model)
711 Provides commands to read and write EEPROM (Electrically Erasable
712 Programmable Read Only Memory) chips that are connected over an
715 config CMD_EEPROM_LAYOUT
716 bool "Enable layout-aware eeprom commands"
717 depends on CMD_EEPROM
719 (deprecated, needs conversion to driver model)
720 When enabled, additional eeprom sub-commands become available.
722 eeprom print - prints the contents of the eeprom in a human-readable
723 way (eeprom layout fields, and data formatted to be fit for human
726 eeprom update - allows user to update eeprom fields by specifying
727 the field name, and providing the new data in a human readable format
728 (same format as displayed by the eeprom print command).
730 Both commands can either auto detect the layout, or be told which
734 __weak int parse_layout_version(char *str)
735 - override to provide your own layout name parsing
736 __weak void __eeprom_layout_assign(struct eeprom_layout *layout,
738 - override to setup the layout metadata based on the version
739 __weak int eeprom_layout_detect(unsigned char *data)
740 - override to provide your own algorithm for detecting layout
743 - contains various printing and updating functions for common
744 types of eeprom fields. Can be used for defining
747 config EEPROM_LAYOUT_HELP_STRING
748 string "Tells user what layout names are supported"
749 depends on CMD_EEPROM_LAYOUT
750 default "<not defined>"
752 Help printed with the LAYOUT VERSIONS part of the 'eeprom'
755 config SYS_I2C_EEPROM_BUS
756 int "I2C bus of the EEPROM device."
757 depends on CMD_EEPROM
760 config SYS_I2C_EEPROM_ADDR_LEN
761 int "Length in bytes of the EEPROM memory array address"
762 depends on CMD_EEPROM || ID_EEPROM
766 Note: This is NOT the chip address length!
768 config SYS_EEPROM_SIZE
769 depends on CMD_EEPROM
770 int "Size in bytes of the EEPROM device"
773 config SYS_EEPROM_PAGE_WRITE_BITS
774 int "Number of bits used to address bytes in a single page"
775 depends on CMD_EEPROM
778 The EEPROM page size is 2^SYS_EEPROM_PAGE_WRITE_BITS.
779 A 64 byte page, for example would require six bits.
781 config SYS_EEPROM_PAGE_WRITE_DELAY_MS
782 int "Number of milliseconds to delay between page writes"
783 depends on CMD_EEPROM || CMD_I2C
789 Infinite write loop on address range
795 Compute MD5 checksum.
799 depends on CMD_MD5SUM
801 Add -v option to verify data against an MD5 checksum.
806 Display memory information.
809 bool "md, mm, nm, mw, cp, cmp, base, loop"
814 mm - memory modify (auto-incrementing address)
815 nm - memory modify (constant address)
816 mw - memory write (fill)
819 base - print or set address offset
820 loop - initialize loop on address range
822 config CMD_MEM_SEARCH
823 bool "ms - Memory search"
825 Memory-search command
827 This allows searching through a region of memory looking for hex
828 data (byte, 16-bit word, 32-bit long, also 64-bit on machines that
829 support it). It is also possible to search for a string. The
830 command accepts a memory range and a list of values to search for.
831 The values need to appear in memory in the same order they are given
832 in the command. At most 10 matches can be returned at a time, but
833 pressing return will show the next 10 matches. Environment variables
834 are set for use with scripting (memmatches, memaddr, mempos).
837 bool "Enable cyclic md/mw commands"
838 depends on CMD_MEMORY
840 Add the "mdc" and "mwc" memory commands. These are cyclic
845 This command will print 4 bytes (10,11,12,13) each 500 ms.
847 => mwc.l 100 12345678 10
848 This command will write 12345678 to address 100 all 10 ms.
853 depends on CMD_MEMORY && (LIB_RAND || LIB_HW_RAND)
855 random - fill memory with random data
860 Simple RAM read/write test.
864 config SYS_ALT_MEMTEST
865 bool "Alternative test"
867 Use a more complete alternative memory test.
871 config SYS_ALT_MEMTEST_BITFLIP
875 The alternative memory test includes bitflip test since 2020.07.
876 The bitflip test significantly increases the overall test time.
877 Bitflip test can optionally be disabled here.
881 config SYS_MEMTEST_START
882 hex "default start address for mtest"
885 This is the default start address for mtest for simple read/write
886 test. If no arguments are given to mtest, default address is used
889 config SYS_MEMTEST_END
890 hex "default end address for mtest"
893 This is the default end address for mtest for simple read/write
894 test. If no arguments are given to mtest, default address is used
903 Compute SHA1 checksum.
905 config SHA1SUM_VERIFY
907 depends on CMD_SHA1SUM
909 Add -v option to verify data against a SHA1 checksum.
912 bool "strings - display strings in memory"
914 This works similarly to the Unix 'strings' command except that it
915 works with a memory range. String of printable characters found
916 within the range are displayed. The minimum number of characters
917 for a sequence to be considered a string can be provided.
921 menu "Compression commands"
925 default y if CMD_BOOTI
928 Support decompressing an LZMA (Lempel-Ziv-Markov chain algorithm)
933 default y if CMD_BOOTI
936 Support decompressing an LZ4 image from memory region.
940 default y if CMD_BOOTI
943 Uncompress a zip-compressed memory region.
947 select GZIP_COMPRESSED
949 Compress a memory region with zlib deflate method.
953 menu "Device access commands"
956 bool "Arm FF-A test command"
957 depends on ARM_FFA_TRANSPORT
959 Provides a test command for the FF-A support
961 - Listing the partition(s) info
962 - Sending a data pattern to the specified partition
963 - Displaying the arm_ffa device info
966 #depends on FLASH_CFI_DRIVER
969 ARM Ltd reference designs flash partition access
972 bool "adc - Access Analog to Digital Converters info and data"
974 depends on DM_REGULATOR
976 Shows ADC device info and permit printing one-shot analog converted
977 data from a named Analog to Digital Converter.
982 depends on PARTITIONS
984 Read/modify/write the fields of Bootloader Control Block, usually
985 stored on the flash "misc" partition with its structure defined in:
986 https://android.googlesource.com/platform/bootable/recovery/+/master/
987 bootloader_message/include/bootloader_message/bootloader_message.h
989 Some real-life use-cases include (but are not limited to):
990 - Determine the "boot reason" (and act accordingly):
991 https://source.android.com/devices/bootloader/boot-reason
992 - Get/pass a list of commands from/to recovery:
993 https://android.googlesource.com/platform/bootable/recovery
994 - Inspect/dump the contents of the BCB fields
997 bool "bind/unbind - Bind or unbind a device to/from a driver"
1000 Bind or unbind a device to/from a driver from the command line.
1001 This is useful in situations where a device may be handled by several
1002 drivers. For example, this can be used to bind a UDC to the usb ether
1003 gadget driver from the command line.
1006 bool "clk - Show clock frequencies"
1009 Shows clock frequences by calling a sock_clk_dump() hook function.
1010 This is depreated in favour of using the CLK uclass and accessing
1011 clock values from associated drivers. However currently no command
1015 bool "demo - Demonstration commands for driver model"
1018 Provides a 'demo' command which can be used to play around with
1019 driver model. To use this properly you will need to enable one or
1020 both of the demo devices (DM_DEMO_SHAPE and DM_DEMO_SIMPLE).
1021 Otherwise you will always get an empty list of devices. The demo
1022 devices are defined in the sandbox device tree, so the easiest
1023 option is to use sandbox and pass the -d point to sandbox's
1030 Enables the command "dfu" which is used to have U-Boot create a DFU
1031 class device via USB. This command requires that the "dfu_alt_info"
1032 environment variable be set and define the alt settings to expose to
1036 bool "dm - Access to driver model information"
1039 Provides access to driver model data structures and information,
1040 such as a list of devices, list of uclasses and the state of each
1041 device (e.g. activated). This is not required for operation, but
1042 can be useful to see the state of driver model for debugging or
1046 bool "fastboot - Android fastboot support"
1049 This enables the command "fastboot" which enables the Android
1050 fastboot mode for the platform. Fastboot is a protocol for
1051 downloading images, flashing and device control used on
1052 Android devices. Fastboot requires either the network stack
1053 enabled or support for acting as a USB device.
1055 See doc/android/fastboot.rst for more information.
1058 bool "flinfo, erase, protect"
1060 depends on MTD || FLASH_CFI_DRIVER || MTD_NOR_FLASH
1063 flinfo - print FLASH memory information
1064 erase - FLASH memory
1065 protect - enable or disable FLASH write protection
1074 config CMD_FPGA_LOADBP
1075 bool "fpga loadbp - load partial bitstream (Xilinx only)"
1078 Supports loading an FPGA device from a bitstream buffer containing
1079 a partial bitstream.
1081 config CMD_FPGA_LOADFS
1082 bool "fpga loadfs - load bitstream from FAT filesystem (Xilinx only)"
1085 Supports loading an FPGA device from a FAT filesystem.
1087 config CMD_FPGA_LOADMK
1088 bool "fpga loadmk - load bitstream from image"
1091 Supports loading an FPGA device from a image generated by mkimage.
1093 config CMD_FPGA_LOADP
1094 bool "fpga loadp - load partial bitstream"
1097 Supports loading an FPGA device from a bitstream buffer containing
1098 a partial bitstream.
1100 config CMD_FPGA_LOAD_SECURE
1101 bool "fpga loads - loads secure bitstreams"
1103 select FPGA_LOAD_SECURE
1105 Enables the fpga loads command which is used to load secure
1106 (authenticated or encrypted or both) bitstreams on to FPGA.
1109 bool "fpgad - dump FPGA registers"
1111 (legacy, needs conversion to driver model)
1112 Provides a way to dump FPGA registers by calling the board-specific
1113 fpga_get_reg() function. This functions similarly to the 'md'
1117 bool "fuse - support for the fuse subssystem"
1119 (deprecated - needs conversion to driver model)
1120 This allows reading, sensing, programming or overriding fuses
1121 which control the behaviour of the device. The command uses the
1129 config CMD_GPIO_READ
1130 bool "gpio read - save GPIO value to variable"
1133 Enables the 'gpio read' command that saves the value
1134 of a GPIO pin to a variable.
1140 Control PWM channels, this allows invert/config/enable/disable PWM channels.
1143 bool "GPT (GUID Partition Table) command"
1144 select EFI_PARTITION
1145 select PARTITION_UUIDS
1148 Enable the 'gpt' command to ready and write GPT style partition
1152 bool "GPT Random UUID generation"
1155 Enable the generation of partitions with random UUIDs if none
1158 config CMD_GPT_RENAME
1159 bool "GPT partition renaming commands"
1162 Enables the 'gpt' command to interchange names on two GPT
1163 partitions via the 'gpt swap' command or to rename single
1164 partitions via the 'rename' command.
1167 bool "ide - Support for IDE drivers"
1170 Provides an 'ide' command which allows accessing the IDE drive,
1171 resetting the IDE interface, printing the partition table and
1172 geting device info. It also enables the 'diskboot' command which
1173 permits booting from an IDE drive.
1176 bool "io - Support for performing I/O accesses"
1178 Provides an 'iod' command to display I/O space and an 'iow' command
1179 to write values to the I/O space. This can be useful for manually
1180 checking the state of devices during boot when debugging device
1184 bool "iotrace - Support for tracing I/O activity"
1186 Provides an 'iotrace' command which supports recording I/O reads and
1187 writes in a trace buffer in memory . It also maintains a checksum
1188 of the trace records (even if space is exhausted) so that the
1189 sequence of I/O accesses can be verified.
1191 When debugging drivers it is useful to see what I/O accesses were
1192 done and in what order.
1194 Even if the individual accesses are of little interest it can be
1195 useful to verify that the access pattern is consistent each time
1196 an operation is performed. In this case a checksum can be used to
1197 characterise the operation of a driver. The checksum can be compared
1198 across different runs of the operation to verify that the driver is
1201 In particular, when performing major refactoring of the driver, where
1202 the access pattern should not change, the checksum provides assurance
1203 that the refactoring work has not broken the driver.
1205 This works by sneaking into the io.h heder for an architecture and
1206 redirecting I/O accesses through iotrace's tracing mechanism.
1208 For now no commands are provided to examine the trace buffer. The
1209 format is fairly simple, so 'md' is a reasonable substitute.
1211 Note: The checksum feature is only useful for I/O regions where the
1212 contents do not change outside of software control. Where this is not
1213 suitable you can fall back to manually comparing the addresses. It
1214 might be useful to enhance tracing to only checksum the accesses and
1215 not the data read/written.
1225 bool "w1 - Support for Dallas 1-Wire protocol"
1227 Dallas 1-wire protocol support
1233 Load a binary file over serial line.
1238 Load a binary over memory mapped.
1241 bool "loads - Load a file over serial in S-Record format"
1244 Load an S-Record file over serial line
1247 bool "Echo all characters received during a loads back to console"
1248 depends on CMD_LOADS
1250 If enabled, all characters received during a serial download (using
1251 the "loads" command) are echoed back. This might be needed by some
1252 terminal emulations (like "cu"), but may as well just take time on
1253 others. This sets the initial value of the "loads_echo" environment
1257 bool "saves - Save a file over serial in S-Record format"
1258 depends on CMD_LOADS
1260 Provides a way to save a binary file using the Motorola S-Record
1261 format over the serial line.
1263 config SYS_LOADS_BAUD_CHANGE
1264 bool "Enable a temporary baudrate change during loads/saves command"
1265 depends on CMD_LOADS || CMD_SAVES
1267 config CMD_LOADXY_TIMEOUT
1268 int "loadxy_timeout"
1272 Initial timeout for loadx and loady commands. Zero means infinity.
1276 bool "lsblk - list block drivers and devices"
1278 Print list of available block device drivers, and for each, the list
1279 of known block devices.
1282 bool "MBR (Master Boot Record) command"
1283 select DOS_PARTITION
1285 Enable the 'mbr' command to ready and write MBR (Master Boot Record)
1286 style partition tables.
1292 Enable the command "misc" for accessing miscellaneous devices with
1293 a MISC uclass driver. The command provides listing all MISC devices
1294 as well as read and write functionalities via their drivers.
1300 MMC memory mapped support.
1304 config CMD_BKOPS_ENABLE
1305 bool "mmc bkops enable"
1308 Enable command for setting manual background operations handshake
1309 on a eMMC device. The feature is optionally available on eMMC devices
1310 conforming to standard >= 4.41.
1313 bool "Enable support for RPMB in the mmc command"
1314 depends on SUPPORT_EMMC_RPMB
1316 Enable the commands for reading, writing and programming the
1317 key for the Replay Protection Memory Block partition in eMMC.
1319 config CMD_MMC_SWRITE
1321 depends on MMC_WRITE
1324 Enable support for the "mmc swrite" command to write Android sparse
1333 Enable storage cloning over block devices, useful for
1334 initial flashing by external block device without network
1337 config CMD_OPTEE_RPMB
1338 bool "Enable read/write support on RPMB via OPTEE"
1339 depends on SUPPORT_EMMC_RPMB && OPTEE
1341 Enable the commands for reading, writing persistent named values
1342 in the Replay Protection Memory Block partition in eMMC by
1343 using Persistent Objects in OPTEE
1348 select MTD_PARTITIONS
1350 MTD commands support.
1354 depends on MULTIPLEXER
1356 List, select, and deselect mux controllers on the fly.
1360 default y if NAND_SUNXI
1361 depends on MTD_RAW_NAND
1366 config CMD_NAND_TRIMFFS
1367 bool "nand write.trimffs"
1368 default y if ARCH_SUNXI
1370 Allows one to skip empty pages when flashing something on a NAND.
1372 config CMD_NAND_LOCK_UNLOCK
1373 bool "nand lock/unlock"
1375 NAND locking support.
1377 config CMD_NAND_TORTURE
1380 NAND torture support.
1389 NVM Express device support
1392 bool "onenand - access to onenand device"
1395 OneNAND is a brand of NAND ('Not AND' gate) flash which provides
1396 various useful features. This command allows reading, writing,
1397 and erasing blocks. It allso provides a way to show and change
1398 bad blocks, and test the device.
1400 config USE_ONENAND_BOARD_INIT
1401 bool "Call onenand_board_init() in the onenand command"
1402 depends on CMD_ONENAND
1407 Enable the 'osd' command which allows to query information from and
1408 write text data to a on-screen display (OSD) device; a virtual device
1409 associated with a display capable of displaying a text overlay on the
1410 display it's associated with..
1414 depends on PARTITIONS
1415 select PARTITION_UUIDS
1417 Read and display information about the partition table on
1421 bool "pci - Access PCI devices"
1423 Provide access to PCI (Peripheral Interconnect Bus), a type of bus
1424 used on some devices to allow the CPU to communicate with its
1425 peripherals. Sub-commands allow bus enumeration, displaying and
1426 changing configuration space and a few other features.
1429 bool "pci_mps - Configure PCI device MPS"
1432 Enables PCI Express Maximum Packet Size (MPS) tuning. This
1433 command configures the PCI Express MPS of each endpoint to the
1434 largest value supported by all devices below the root complex.
1435 The Maximum Read Request Size will not be altered. This method is
1436 the same algorithm as used by Linux pci=pcie_bus_safe.
1439 bool "pinmux - show pins muxing"
1441 default y if PINCTRL
1443 Parse all available pin-controllers and show pins muxing. This
1444 is useful for debug purpoer to check the pin muxing and to know if
1445 a pin is configured as a GPIO or as an alternate function.
1450 Poweroff/Shutdown the system
1453 bool "read - Read binary data from a partition"
1455 Provides low-level access to the data in a partition.
1457 config CMD_REMOTEPROC
1459 depends on REMOTEPROC
1461 Support for Remote Processor control
1464 bool "sata - Access SATA subsystem"
1467 SATA (Serial Advanced Technology Attachment) is a serial bus
1468 standard for connecting to hard drives and other storage devices.
1469 This command provides information about attached devices and allows
1470 reading, writing and other operations.
1472 SATA replaces PATA (originally just ATA), which stands for Parallel AT
1473 Attachment, where AT refers to an IBM AT (Advanced Technology)
1474 computer released in 1984.
1477 bool "scsi - Access to SCSI devices"
1481 This provides a 'scsi' command which provides access to SCSI (Small
1482 Computer System Interface) devices. The command provides a way to
1483 scan the bus, reset the bus, read and write data and get information
1487 bool "sdram - Print SDRAM configuration information"
1489 Provides information about attached SDRAM. This assumed that the
1490 SDRAM has an EEPROM with information that can be read using the
1491 I2C bus. This is only available on some boards.
1495 depends on DM_SPI_FLASH || SPI_FLASH
1496 default y if DM_SPI_FLASH
1501 bool "sf test - Allow testing of SPI flash"
1504 Provides a way to test that SPI flash is working correctly. The
1505 test is destructive, in that an area of SPI flash must be provided
1506 for the test to use. Performance information is also provided,
1507 measuring the performance of reading, writing and erasing in
1508 Mbps (Million Bits Per Second). This value should approximately
1509 equal the SPI bus speed for a single-bit-wide SPI bus, assuming
1510 everything is working properly.
1513 bool "sspi - Command to access spi device"
1516 SPI utility command.
1518 config DEFAULT_SPI_BUS
1519 int "default spi bus used by sspi command"
1523 config DEFAULT_SPI_MODE
1524 hex "default spi mode used by sspi command (see include/spi.h)"
1528 config CMD_TEMPERATURE
1529 bool "temperature - display the temperature from thermal sensors"
1530 depends on DM_THERMAL
1532 Provides a way to list thermal sensors and to get their readings.
1535 bool "tsi148 - Command to access tsi148 device"
1537 This provides various sub-commands to initialise and configure the
1538 Turndra tsi148 device. See the command help for full details.
1541 bool "Enable UFS - Universal Flash Subsystem commands"
1544 "This provides commands to initialise and configure universal flash
1548 bool "universe - Command to set up the Turndra Universe controller"
1550 This allows setting up the VMEbus provided by this controller.
1551 See the command help for full details.
1561 select USB_FUNCTION_SDP
1563 Enables the command "sdp" which is used to have U-Boot emulating the
1564 Serial Download Protocol (SDP) via USB.
1568 depends on USB_FUNCTION_ROCKUSB
1570 Rockusb protocol is widely used by Rockchip SoC based devices. It can
1571 read/write info, image to/from devices. This enable rockusb command
1572 support to communication with rockusb device. for more detail about
1573 this command, please read doc/README.rockusb.
1575 config CMD_USB_MASS_STORAGE
1576 bool "UMS usb mass storage"
1577 depends on USB_GADGET_DOWNLOAD
1578 select USB_FUNCTION_MASS_STORAGE
1579 depends on BLK && USB_GADGET
1581 Enables the command "ums" and the USB mass storage support to the
1582 export a block device: U-Boot, the USB device, acts as a simple
1583 external hard drive plugged on the host USB port.
1585 config CMD_UMS_ABORT_KEYED
1586 bool "UMS abort with any key"
1587 depends on CMD_USB_MASS_STORAGE
1589 Allow interruption of usb mass storage run with any key pressed.
1592 bool "Xen para-virtualized block device"
1596 Xen para-virtualized block device support
1603 VirtIO block device support
1609 This provides commands to control the watchdog timer devices.
1612 bool "write - Write binary data to a partition"
1614 Provides low-level write access to a partition.
1620 Enable the command "axi" for accessing AXI (Advanced eXtensible
1621 Interface) busses, a on-chip interconnect specification for managing
1622 functional blocks in SoC designs, which is also often used in designs
1623 involving FPGAs (e.g. communication with IP cores in Xilinx FPGAs).
1627 menu "Shell scripting commands"
1632 Print file to standard output
1638 Echo args to console
1644 Return true/false on integer compare.
1650 Run script from memory
1656 Evaluate boolean and math expressions and store the result in an env
1658 Also supports loading the value at a memory location into a variable.
1659 If CONFIG_REGEX is enabled, setexpr also supports a gsub function.
1661 config CMD_SETEXPR_FMT
1663 depends on CMD_SETEXPR
1665 Evaluate format string expression and store result in an environment
1670 menu "Android support commands"
1672 config CMD_AB_SELECT
1674 depends on ANDROID_AB
1676 On Android devices with more than one boot slot (multiple copies of
1677 the kernel and system images) this provides a command to select which
1678 slot should be used to boot from and register the boot attempt. This
1679 is used by the new A/B update model where one slot is updated in the
1680 background while running from the other slot.
1687 bool "Network commands"
1697 bootp - boot image via network using BOOTP/TFTP protocol
1701 depends on CMD_BOOTP
1703 Boot image via network using DHCP/TFTP protocol
1709 Boot image via network using DHCPv6/TFTP protocol using IPv6.
1711 Will perform 4-message exchange with DHCPv6 server, requesting
1712 the minimum required options to TFTP boot. Complies with RFC 8415.
1714 config BOOTP_MAY_FAIL
1715 bool "Allow for the BOOTP/DHCP server to not be found"
1716 depends on CMD_BOOTP
1718 If the DHCP server is not found after the configured retry count, the
1719 call will fail instead of starting over. This can be used to fail
1720 over to Link-local IP address configuration if the DHCP server is not
1723 config BOOTP_BOOTPATH
1724 bool "Request & store 'rootpath' from BOOTP/DHCP server"
1726 depends on CMD_BOOTP
1728 Even though the config is called BOOTP_BOOTPATH, it stores the
1729 path in the variable 'rootpath'.
1731 config BOOTP_VENDOREX
1732 bool "Support vendor extensions from BOOTP/DHCP server"
1733 depends on CMD_BOOTP
1735 config BOOTP_BOOTFILESIZE
1736 bool "Request & store 'bootfilesize' from BOOTP/DHCP server"
1737 depends on CMD_BOOTP
1740 bool "Request & store 'dnsip' from BOOTP/DHCP server"
1742 depends on CMD_BOOTP
1744 The primary DNS server is stored as 'dnsip'. If two servers are
1745 returned, you must set BOOTP_DNS2 to store that second server IP
1749 bool "Store 'dnsip2' from BOOTP/DHCP server"
1750 depends on BOOTP_DNS
1752 If a DHCP client requests the DNS server IP from a DHCP server,
1753 it is possible that more than one DNS serverip is offered to the
1754 client. If CONFIG_BOOTP_DNS2 is enabled, the secondary DNS
1755 server IP will be stored in the additional environment
1756 variable "dnsip2". The first DNS serverip is always
1757 stored in the variable "dnsip", when BOOTP_DNS is defined.
1759 config BOOTP_GATEWAY
1760 bool "Request & store 'gatewayip' from BOOTP/DHCP server"
1762 depends on CMD_BOOTP
1764 config BOOTP_HOSTNAME
1765 bool "Request & store 'hostname' from BOOTP/DHCP server"
1767 depends on CMD_BOOTP
1769 The name may or may not be qualified with the local domain name.
1771 config BOOTP_PREFER_SERVERIP
1772 bool "serverip variable takes precedent over DHCP server IP."
1773 depends on CMD_BOOTP
1775 By default a BOOTP/DHCP reply will overwrite the 'serverip' variable.
1777 With this option enabled, the 'serverip' variable in the environment
1778 takes precedence over DHCP server IP and will only be set by the DHCP
1779 server if not already set in the environment.
1781 config BOOTP_SUBNETMASK
1782 bool "Request & store 'netmask' from BOOTP/DHCP server"
1784 depends on CMD_BOOTP
1786 config BOOTP_NISDOMAIN
1787 bool "Request & store 'nisdomain' from BOOTP/DHCP server"
1788 depends on CMD_BOOTP
1790 config BOOTP_NTPSERVER
1791 bool "Request & store 'ntpserverip' from BOOTP/DHCP server"
1792 depends on CMD_BOOTP
1794 config BOOTP_TIMEOFFSET
1795 bool "Request & store 'timeoffset' from BOOTP/DHCP server"
1796 depends on CMD_BOOTP && CMD_SNTP
1801 Selecting this will allow capturing all Ethernet packets and store
1802 them in physical memory in a PCAP formated file,
1803 later to be analyzed by PCAP reader application (IE. WireShark).
1806 bool "Send PXE client arch to BOOTP/DHCP server"
1808 depends on CMD_BOOTP && CMD_PXE
1810 Supported for ARM, ARM64, and x86 for now.
1812 config BOOTP_PXE_CLIENTARCH
1814 depends on BOOTP_PXE
1815 default 0x16 if ARM64
1819 config BOOTP_VCI_STRING
1821 depends on CMD_BOOTP
1822 default "U-Boot.armv7" if CPU_V7A || CPU_V7M || CPU_V7R
1823 default "U-Boot.armv8" if ARM64
1824 default "U-Boot.arm" if ARM
1829 config DHCP6_PXE_CLIENTARCH
1831 default 0x16 if ARM64
1835 config DHCP6_PXE_DHCP_OPTION
1836 bool "Request & store 'pxe_configfile' from DHCP6 server"
1838 config DHCP6_ENTERPRISE_ID
1839 int "Enterprise ID to send in DHCPv6 Vendor Class Option"
1848 tftpboot - load file via network using TFTP protocol
1852 depends on CMD_TFTPBOOT
1854 TFTP put command, for uploading files to a server
1858 depends on CMD_TFTPBOOT
1860 Act as a TFTP server and boot the first received file
1862 config NET_TFTP_VARS
1863 bool "Control TFTP timeout and count through environment"
1864 depends on CMD_TFTPBOOT
1867 If set, allows controlling the TFTP timeout through the
1868 environment variable tftptimeout, and the TFTP maximum
1869 timeout count through the variable tftptimeoutcountmax.
1870 If unset, timeout and maximum are hard-defined as 1 second
1871 and 10 timouts per TFTP transfer.
1876 Boot image via network using RARP/TFTP protocol
1881 Boot image via network using NFS protocol.
1884 int "Timeout in milliseconds for NFS mounts"
1888 Timeout in milliseconds used in NFS protocol. If you encounter
1889 "ERROR: Cannot umount" in nfs command, try longer timeout such as
1892 config SYS_DISABLE_AUTOLOAD
1893 bool "Disable automatically loading files over the network"
1894 depends on CMD_BOOTP || CMD_DHCP || CMD_NFS || CMD_RARP
1896 Typically, commands such as "dhcp" will attempt to automatically
1897 load a file from the network, once the initial network configuration
1898 is complete. Enable this option to disable this behavior and instead
1899 require files to be loaded over the network by subsequent commands.
1905 wget is a simple command to download kernel, or other files,
1906 from a http server over TCP.
1912 If set, allows 802.3(clause 22) MII Management functions interface access
1913 The management interface specified in Clause 22 provides
1914 a simple, two signal, serial interface to connect a
1915 Station Management entity and a managed PHY for providing access
1916 to management parameters and services.
1917 The interface is referred to as the MII management interface.
1920 bool "Call mii_init() in the mii command"
1921 depends on CMD_MII && (MPC8XX_FEC || FSLDMAFE || MCFFEC)
1927 If set, allows Enable 802.3(clause 45) MDIO interface registers access
1928 The MDIO interface is orthogonal to the MII interface and extends
1929 it by adding access to more registers through indirect addressing.
1934 Send ICMP ECHO_REQUEST to network host
1939 default y if (CMD_PING && IPV6)
1941 Send ICMPv6 ECHO_REQUEST to network host
1946 Perform CDP network configuration
1952 Synchronize RTC via network
1957 Lookup the IP of a hostname
1959 config CMD_LINK_LOCAL
1963 Acquire a network IP address using the link-local protocol
1969 Manually configure the attached NIC via NC-SI.
1970 Normally this happens automatically before other network
1973 config IPV6_ROUTER_DISCOVERY
1974 bool "Do IPv6 router discovery"
1977 Will automatically perform router solicitation on first IPv6
1984 Allow control of L2 Ethernet switch commands. These are supported
1985 by the vsc9953 Ethernet driver at present. Sub-commands allow
1986 operations such as enabling / disabling a port and
1987 viewing/maintaining the filtering database (FDB)
1993 Boot image via network using PXE protocol
1998 Wait for wake-on-lan Magic Packet
2002 menu "Misc commands"
2007 This is a simple sliding block puzzle game designed by Italian web
2008 developer Gabriele Cirulli. The game's objective is to slide numbered
2009 tiles on a grid to combine them to create a tile with the number
2012 This needs ANSI support on your terminal to work. It is not fully
2013 functional on a video device.
2016 bool "Enable 'bmp' command"
2020 This provides a way to obtain information about a BMP-format image
2021 and to display it. BMP (which presumably stands for BitMaP) is a
2022 file format defined by Microsoft which supports images of various
2023 depths, formats and compression methods. Headers on the file
2024 determine the formats used. This command can be used by first loading
2025 the image into RAM, then using this command to look at it or display
2028 config CMD_BOOTCOUNT
2030 depends on BOOTCOUNT_LIMIT
2032 Enable the bootcount command, which allows interrogation and
2033 reset of the bootcounter.
2036 bool "Enable board-specific commands"
2038 (deprecated: instead, please define a Kconfig option for each command)
2040 Some boards have board-specific commands which are only enabled
2041 during developemnt and need to be turned off for production. This
2042 option provides a way to control this. The commands that are enabled
2043 vary depending on the board.
2045 config CMD_BLOCK_CACHE
2046 bool "blkcache - control and stats for block cache"
2047 depends on BLOCK_CACHE
2048 default y if BLOCK_CACHE
2050 Enable the blkcache command, which can be used to control the
2051 operation of the cache functions.
2052 This is most useful when fine-tuning the operation of the cache
2053 during development, but also allows the cache to be disabled when
2054 it might hurt performance (e.g. when using the ums command).
2057 bool "blkmap - Composable virtual block devices"
2061 Create virtual block devices that are backed by various sources,
2062 e.g. RAM, or parts of an existing block device. Though much more
2063 rudimentary, it borrows a lot of ideas from Linux's device mapper
2067 - Treat a region of RAM as a block device, i.e. a RAM disk. This let's
2068 you extract files from filesystem images stored in RAM (perhaps as a
2069 result of a TFTP transfer).
2070 - Create a virtual partition on an existing device. This let's you
2071 access filesystems that aren't stored at an exact partition
2072 boundary. A common example is a filesystem image embedded in an FIT
2080 Enable the 'button' command which allows to get the status of
2081 buttons supported by the board. The buttonss can be listed with
2082 'button list' and state can be known with 'button <label>'.
2083 Any button drivers can be controlled with this command, e.g.
2087 bool "icache or dcache"
2089 Enable the "icache" and "dcache" commands
2091 config CMD_CONITRACE
2092 bool "conitrace - trace console input codes"
2094 Enable the 'conitrace' command which displays the codes received
2095 from the console input as hexadecimal numbers.
2098 bool "Enable clear screen command 'cls'"
2099 default y if LCD || VIDEO
2101 Enable the 'cls' command which clears the screen contents
2102 on video frame buffer.
2105 bool "efidebug - display/configure UEFI environment"
2106 depends on EFI_LOADER
2107 select EFI_DEVICE_PATH_TO_TEXT
2109 Enable the 'efidebug' command which provides a subset of UEFI
2110 shell utility with simplified functionality. It will be useful
2111 particularly for managing boot parameters as well as examining
2112 various EFI status for debugging.
2114 config CMD_EFICONFIG
2115 bool "eficonfig - provide menu-driven uefi variables maintenance interface"
2116 default y if !HAS_BOARD_SIZE_LIMIT
2117 depends on CMD_BOOTEFI_BOOTMGR
2120 Enable the 'eficonfig' command which provides the menu-driven UEFI
2121 variable maintenance interface.
2123 config CMD_EXCEPTION
2124 bool "exception - raise exception"
2125 depends on ARM || RISCV || SANDBOX || X86
2127 Enable the 'exception' command which allows to raise an exception.
2134 Enable the 'led' command which allows for control of LEDs supported
2135 by the board. The LEDs can be listed with 'led list' and controlled
2136 with led on/off/togle/blink. Any LED drivers can be controlled with
2137 this command, e.g. led_gpio.
2142 Enable the 'ini' command which allows a .ini file to be parsed and
2143 placed into environment variables. Please check the source code for
2144 this as there is no documentation.
2151 Enable the 'date' command for getting/setting the time/date in RTC
2158 Enable the 'rtc' command for low-level access to RTC devices.
2163 Run commands and summarize execution time.
2166 bool "gettime - read elapsed time"
2168 Enable the 'gettime' command which reads the elapsed time since
2169 U-Boot started running. This shows the time in seconds and
2170 milliseconds. See also the 'bootstage' command which provides more
2171 flexibility for boot timing.
2174 bool "pause command"
2176 Delay execution waiting for any user input.
2177 Useful to allow the user to read a failure log.
2182 default y if SANDBOX
2185 Print bytes from the hardware random number generator.
2187 config CMD_KASLRSEED
2191 Set the kaslr-seed in the chosen node with entropy provided by a
2192 hardware random number generator.
2198 Delay execution for some time
2201 bool "support for multiprocessor commands"
2205 This enables commands to bringup different processors
2206 in multiprocessor cases.
2211 Access the system timer.
2217 This provides basic access to the U-Boot's sound support. The main
2218 feature is to play a beep.
2220 sound init - set up sound system
2221 sound play - play a sound
2227 Boot image via local extlinux.conf file
2233 This provides access to the QEMU firmware interface. The main
2234 feature is to allow easy loading of files passed to qemu-system
2235 via -kernel / -initrd
2240 This provides access to Linux PStore with Rammoops backend. The main
2241 feature is to allow to display or save PStore records.
2243 See doc/pstore.rst for more information.
2247 config CMD_PSTORE_MEM_ADDR
2248 hex "Memory Address"
2249 depends on CMD_PSTORE
2251 Base addr used for PStore ramoops memory, should be identical to
2252 ramoops.mem_address parameter used by kernel
2254 config CMD_PSTORE_MEM_SIZE
2256 depends on CMD_PSTORE
2259 Size of PStore ramoops memory, should be identical to ramoops.mem_size
2260 parameter used by kernel, a power of 2 and larger than the sum of the
2263 config CMD_PSTORE_RECORD_SIZE
2264 hex "Dump record size"
2265 depends on CMD_PSTORE
2268 Size of each dump done on oops/panic, should be identical to
2269 ramoops.record_size parameter used by kernel and a power of 2
2272 config CMD_PSTORE_CONSOLE_SIZE
2273 hex "Kernel console log size"
2274 depends on CMD_PSTORE
2277 Size of kernel console log, should be identical to
2278 ramoops.console_size parameter used by kernel and a power of 2
2281 config CMD_PSTORE_FTRACE_SIZE
2282 hex "FTrace log size"
2283 depends on CMD_PSTORE
2286 Size of ftrace log, should be identical to ramoops.ftrace_size
2287 parameter used by kernel and a power of 2
2289 config CMD_PSTORE_PMSG_SIZE
2290 hex "User space message log size"
2291 depends on CMD_PSTORE
2294 Size of user space message log, should be identical to
2295 ramoops.pmsg_size parameter used by kernel and a power of 2
2297 config CMD_PSTORE_ECC_SIZE
2299 depends on CMD_PSTORE
2302 if non-zero, the option enables ECC support and specifies ECC buffer
2303 size in bytes (1 is a special value, means 16 bytes ECC), should be
2304 identical to ramoops.ramoops_ecc parameter used by kernel
2308 source "cmd/mvebu/Kconfig"
2311 bool "terminal - provides a way to attach a serial terminal"
2313 Provides a 'cu'-like serial terminal command. This can be used to
2314 access other serial ports from the system console. The terminal
2315 is very simple with no special processing of characters. As with
2316 cu, you can press ~. (tilde followed by period) to exit.
2319 bool "uuid, guid - generation of unique IDs"
2322 This enables two commands:
2324 uuid - generate random Universally Unique Identifier
2325 guid - generate Globally Unique Identifier based on random UUID
2327 The two commands are very similar except for the endianness of the
2330 config CMD_VIDCONSOLE
2331 bool "lcdputs and setcurs"
2335 Enabling this will provide 'setcurs' and 'lcdputs' commands which
2336 support cursor positioning and drawing strings on the video
2337 console (framebuffer).
2339 The name 'lcdputs' is a bit of a misnomer, but so named because the
2340 video device is often an LCD.
2342 config CMD_SELECT_FONT
2343 bool "select font size"
2347 Enabling this will provide 'font' command.
2348 Allows font selection at runtime.
2352 source "cmd/ti/Kconfig"
2354 config CMD_BOOTSTAGE
2355 bool "Enable the 'bootstage' command"
2356 depends on BOOTSTAGE
2358 Add a 'bootstage' command which supports printing a report
2359 and un/stashing of bootstage data.
2361 menu "Power commands"
2363 bool "Enable Driver Model PMIC command"
2366 This is the pmic command, based on a driver model pmic's API.
2367 Command features are unchanged:
2368 - list - list pmic devices
2369 - pmic dev <id> - show or [set] operating pmic device (NEW)
2370 - pmic dump - dump registers
2371 - pmic read address - read byte of register at address
2372 - pmic write address - write byte to register at address
2373 The only one change for this command is 'dev' subcommand.
2375 config CMD_REGULATOR
2376 bool "Enable Driver Model REGULATOR command"
2377 depends on DM_REGULATOR
2379 This command is based on driver model regulator's API.
2380 User interface features:
2381 - list - list regulator devices
2382 - regulator dev <id> - show or [set] operating regulator device
2383 - regulator info - print constraints info
2384 - regulator status - print operating status
2385 - regulator value <val] <-f> - print/[set] voltage value [uV]
2386 - regulator current <val> - print/[set] current value [uA]
2387 - regulator mode <id> - print/[set] operating mode id
2388 - regulator enable - enable the regulator output
2389 - regulator disable - disable the regulator output
2391 The '-f' (force) option can be used for set the value which exceeds
2392 the limits, which are found in device-tree and are kept in regulator's
2393 uclass plat structure.
2397 menu "Security commands"
2399 bool "Enable the 'aes' command"
2402 This provides a means to encrypt and decrypt data using the AES
2403 (Advanced Encryption Standard). This algorithm uses a symetric key
2404 and is widely used as a streaming cipher. Different key lengths are
2405 supported by the algorithm but this command only supports 128 bits
2409 bool "Enable the 'blob' command"
2410 depends on !MX6ULL && !MX6SLL && !MX6SL
2411 select IMX_HAB if ARCH_MX6 || ARCH_MX7 || ARCH_MX7ULP || ARCH_IMX8M
2413 This is used with the Freescale secure boot mechanism.
2415 Freescale's SEC block has built-in Blob Protocol which provides
2416 a method for protecting user-defined data across system power
2417 cycles. SEC block protects data in a data structure called a Blob,
2418 which provides both confidentiality and integrity protection.
2420 Encapsulating data as a blob
2421 Each time that the Blob Protocol is used to protect data, a
2422 different randomly generated key is used to encrypt the data.
2423 This random key is itself encrypted using a key which is derived
2424 from SoC's non-volatile secret key and a 16 bit Key identifier.
2425 The resulting encrypted key along with encrypted data is called a
2426 blob. The non-volatile secure key is available for use only during
2429 During decapsulation, the reverse process is performed to get back
2433 blob enc - encapsulating data as a cryptgraphic blob
2434 blob dec - decapsulating cryptgraphic blob to get the data
2438 blob enc src dst len km
2440 Encapsulate and create blob of data $len bytes long
2441 at address $src and store the result at address $dst.
2442 $km is the 16 byte key modifier is also required for
2443 generation/use as key for cryptographic operation. Key
2444 modifier should be 16 byte long.
2446 blob dec src dst len km
2448 Decapsulate the blob of data at address $src and
2449 store result of $len byte at addr $dst.
2450 $km is the 16 byte key modifier is also required for
2451 generation/use as key for cryptographic operation. Key
2452 modifier should be 16 byte long.
2455 bool "Support 'hash' command"
2458 This provides a way to hash data in memory using various supported
2459 algorithms (such as SHA1, MD5, CRC32). The computed digest can be
2460 saved to memory or to an environment variable. It is also possible
2461 to verify a hash against data in memory.
2464 bool "Support the 'hvc' command"
2465 depends on ARM_SMCCC
2467 Allows issuing Hypervisor Calls (HVCs). Mostly useful for
2468 development and testing.
2471 bool "Support the 'smc' command"
2472 depends on ARM_SMCCC
2474 Allows issuing Secure Monitor Calls (SMCs). Mostly useful for
2475 development and testing.
2481 Add -v option to verify data against a hash.
2484 bool "scp03 - SCP03 enable and rotate/provision operations"
2487 This command provides access to a Trusted Application
2488 running in a TEE to request Secure Channel Protocol 03
2489 (SCP03) enablement and/or rotation of its SCP03 keys.
2498 bool "Enable the 'tpm' command"
2499 depends on TPM_V1 || TPM_V2
2500 select CMD_TPM_V1 if TPM_V1
2501 select CMD_TPM_V2 if TPM_V2
2503 This provides a means to talk to a TPM from the command line. A wide
2504 range of commands if provided - see 'tpm help' for details. The
2505 command requires a suitable TPM on your board and the correct driver
2511 bool "Enable the 'tpm test' command"
2514 This provides a a series of tests to confirm that the TPMv1.x is
2515 working correctly. The tests cover initialisation, non-volatile RAM,
2516 extend, global lock and checking that timing is within expectations.
2517 The tests pass correctly on Infineon TPMs but may need to be adjusted
2524 menu "Firmware commands"
2526 bool "Enable crosec command"
2530 Enable command-line access to the Chrome OS EC (Embedded
2531 Controller). This provides the 'crosec' command which has
2532 a number of sub-commands for performing EC tasks such as
2533 updating its flash, accessing a small saved context area
2534 and talking to the I2C bus behind the EC (if there is one).
2537 menu "Filesystem commands"
2539 bool "Enable the 'btrsubvol' command"
2542 This enables the 'btrsubvol' command to list subvolumes
2543 of a BTRFS filesystem. There are no special commands for
2544 listing BTRFS directories or loading BTRFS files - this
2545 can be done by the generic 'fs' commands (see CMD_FS_GENERIC)
2546 when BTRFS is enabled (see FS_BTRFS).
2549 bool "Enable the 'cbfs' command"
2552 Define this to enable support for reading from a Coreboot
2553 filesystem. This is a ROM-based filesystem used for accessing files
2554 on systems that use coreboot as the first boot-loader and then load
2555 U-Boot to actually boot the Operating System. Available commands are
2556 cbfsinit, cbfsinfo, cbfsls and cbfsload.
2559 bool "Enable the 'cramfs' command"
2560 depends on FS_CRAMFS
2562 This provides commands for dealing with CRAMFS (Compressed ROM
2563 filesystem). CRAMFS is useful when space is tight since files are
2564 compressed. Two commands are provided:
2566 cramfsls - lists files in a cramfs image
2567 cramfsload - loads a file from a cramfs image
2570 bool "EROFS command support"
2573 Support for the EROFS fs
2576 bool "ext2 command support"
2579 Enables EXT2 FS command
2582 bool "ext4 command support"
2585 Enables EXT4 FS command
2587 config CMD_EXT4_WRITE
2589 bool "ext4 write command support"
2592 Enables EXT4 FS write command
2595 bool "FAT command support"
2598 Support for the FAT fs
2601 bool "SquashFS command support"
2604 Enables SquashFS filesystem commands (e.g. load, ls).
2606 config CMD_FS_GENERIC
2607 bool "filesystem commands"
2609 Enables filesystem commands (e.g. load, ls) that work for multiple
2613 bool "fsuuid command"
2615 Enables fsuuid command for filesystem UUID.
2618 bool "jffs2 command"
2621 Enables commands to support the JFFS2 (Journalling Flash File System
2622 version 2) filesystem. This enables fsload, ls and fsinfo which
2623 provide the ability to load files, list directories and obtain
2624 filesystem information.
2627 string "Default device for JFFS2"
2628 depends on CMD_JFFS2
2631 The default device to use with the jffs2 command.
2633 config JFFS2_PART_OFFSET
2634 hex "Default offset within flash to locate the JFFS2 image"
2635 depends on CMD_JFFS2
2638 The default offset within flash to locate the JFFS2 image.
2640 config JFFS2_PART_SIZE
2641 hex "Default size of JFFS2 partition"
2642 depends on CMD_JFFS2
2645 The default size of the JFFS2 partition
2648 bool "MTD partition support"
2651 MTD partitioning tool support.
2652 It is strongly encouraged to avoid using this command
2653 anymore along with 'sf', 'nand', 'onenand'. One can still
2654 declare the partitions in the mtdparts environment variable
2655 but better use the MTD stack and the 'mtd' command instead.
2657 config CMD_MTDPARTS_SPREAD
2658 bool "Padd partition size to take account of bad blocks"
2659 depends on CMD_MTDPARTS
2661 This enables the 'spread' sub-command of the mtdparts command.
2662 This command will modify the existing mtdparts variable by increasing
2663 the size of the partitions such that 1) each partition's net size is
2664 at least as large as the size specified in the mtdparts variable and
2665 2) each partition starts on a good block.
2667 config CMD_MTDPARTS_SHOW_NET_SIZES
2668 bool "Show net size (w/o bad blocks) of partitions"
2669 depends on CMD_MTDPARTS
2671 Adds two columns to the printed partition table showing the
2672 effective usable size of a partition, if bad blocks are taken
2675 config MTDIDS_DEFAULT
2676 string "Default MTD IDs"
2677 depends on MTD || SPI_FLASH
2678 depends on !SYS_MTDPARTS_RUNTIME
2680 Defines a default MTD IDs list for use with MTD partitions in the
2681 Linux MTD command line partitions format.
2683 config MTDPARTS_DEFAULT
2684 string "Default MTD partition scheme"
2685 depends on MTD || SPI_FLASH
2686 depends on !SYS_MTDPARTS_RUNTIME
2688 Defines a default MTD partitioning scheme in the Linux MTD command
2689 line partitions format
2692 bool "reiser - Access to reiserfs filesystems"
2694 This provides two commands which operate on a resierfs filesystem,
2695 commonly used some years ago:
2697 reiserls - list files
2698 reiserload - load a file
2701 bool "yaffs2 - Access of YAFFS2 filesystem"
2705 This provides commands for accessing a YAFFS2 filesystem. Yet
2706 Another Flash Filesystem 2 is a filesystem designed specifically
2707 for NAND flash. It incorporates bad-block management and ensures
2708 that device writes are sequential regardless of filesystem
2712 bool "zfs - Access of ZFS filesystem"
2714 This provides commands to accessing a ZFS filesystem, commonly used
2715 on Solaris systems. Two sub-commands are provided:
2717 zfsls - list files in a directory
2718 zfsload - load a file
2720 See doc/README.zfs for more details.
2724 menu "Debug commands"
2726 config CMD_CBSYSINFO
2729 default y if SYS_COREBOOT
2731 This provides information about the coreboot sysinfo table stored in
2732 memory by coreboot before jumping to U-Boot. It can be useful for
2733 debugging the beaaviour of coreboot or U-Boot.
2736 bool "cyclic - Show information about cyclic functions"
2740 This enables the 'cyclic' command which provides information about
2741 cyclic execution functions. This infrastructure allows registering
2742 functions to be executed cyclically, e.g. every 100ms. These commands
2745 cyclic list - list cyclic functions
2746 cyclic cyclic demo <cycletime_ms> <delay_us> - register cyclic
2749 See doc/develop/cyclic.rst for more details.
2752 bool "diag - Board diagnostics"
2754 This command provides access to board diagnostic tests. These are
2755 called Power-on Self Tests (POST). The command allows listing of
2756 available tests and running either all the tests, or specific tests
2760 bool "event - Show information about events"
2762 default y if EVENT_DEBUG
2764 This enables the 'event' command which provides information about
2765 events and event-handler routines. This can help to device event
2769 bool "irq - Show information about interrupts"
2770 depends on !ARM && !MIPS && !RISCV && !SH
2772 This enables two commands:
2774 interrupts - enable or disable interrupts
2775 irqinfo - print device-specific interrupt information
2778 bool "kgdb - Allow debugging of U-Boot with gdb"
2781 This enables a 'kgdb' command which allows gdb to connect to U-Boot
2782 over a serial link for debugging purposes. This allows
2783 single-stepping, inspecting variables, etc. This is supported only
2784 on PowerPC at present.
2787 bool "log - Generation, control and access to logging"
2791 This provides access to logging features. It allows the output of
2792 log data to be controlled to a limited extent (setting up the default
2793 maximum log level for emitting of records). It also provides access
2794 to a command used for testing the log system.
2797 bool "trace - Support tracing of function calls and timing"
2801 Enables a command to control using of function tracing within
2802 U-Boot. This allows recording of call traces including timing
2803 information. The command can write data to memory for exporting
2804 for analysis (e.g. using bootchart). See doc/README.trace for full
2808 bool "avb - Android Verified Boot 2.0 operations"
2809 depends on AVB_VERIFY
2811 Enables a "avb" command to perform verification of partitions using
2812 Android Verified Boot 2.0 functionality. It includes such subcommands:
2813 avb init - initialize avb2 subsystem
2814 avb read_rb - read rollback index
2815 avb write_rb - write rollback index
2816 avb is_unlocked - check device lock state
2817 avb get_uuid - read and print uuid of a partition
2818 avb read_part - read data from partition
2819 avb read_part_hex - read data from partition and output to stdout
2820 avb write_part - write data to partition
2821 avb verify - run full verification chain
2823 config CMD_STACKPROTECTOR_TEST
2824 bool "Test command for stack protector"
2825 depends on STACKPROTECTOR
2827 Enable stackprot_test command
2828 The stackprot_test command will force a stack overrun to test
2829 the stack smashing detection mechanisms.
2834 tristate "Enable UBI - Unsorted block images commands"
2837 UBI is a software layer above MTD layer which admits use of LVM-like
2838 logical volumes on top of MTD devices, hides some complexities of
2839 flash chips like wear and bad blocks and provides some other useful
2840 capabilities. Please, consult the MTD web site for more details
2841 (www.linux-mtd.infradead.org). Activate this option if you want
2842 to use U-Boot UBI commands.
2843 It is also strongly encouraged to also enable CONFIG_MTD to get full
2846 config CMD_UBI_RENAME
2847 bool "Enable rename"
2850 Enable a "ubi" command to rename ubi volume:
2851 ubi rename <oldname> <newname>
2854 tristate "Enable UBIFS - Unsorted block images filesystem commands"
2856 default y if CMD_UBI
2860 UBIFS is a file system for flash devices which works on top of UBI.
2862 config MMC_SPEED_MODE_SET
2863 bool "set speed mode using mmc command"
2867 Enable setting speed mode using mmc rescan and mmc dev commands.
2868 The speed mode is provided as the last argument in these commands
2869 and is indicated using the index from enum bus_mode in
2870 include/mmc.h. A speed mode can be set only if it has already
2871 been enabled in the device tree.
2874 bool "Amlogic Meson commands"
2875 depends on ARCH_MESON
2878 Enable useful commands for the Meson Soc family developed by Amlogic Inc.
projects / platform / kernel / u-boot.git / blob