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
192 config CMD_HISTORY_USE_CALLOC
193 bool "dynamically allocate memory"
195 depends on CMD_HISTORY
197 Saying Y to this will use calloc to get the space for history
198 storing. Otherwise the history buffer will be an uninitialized
199 static array directly, without the memory allocation, and it is
200 writable after relocation to RAM. If u-boot is running from ROM
201 all the time or unsure, say Y to this.
208 Print GPL license text
213 Provides access to the Intel Power-Management Controller (PMC) so
214 that its state can be examined. This does not currently support
215 changing the state but it is still useful for debugging and seeing
224 config CMD_TLV_EEPROM
226 depends on I2C_EEPROM
229 Display and program the system EEPROM data block in ONIE Tlvinfo
230 format. TLV stands for Type-Length-Value.
232 config SPL_CMD_TLV_EEPROM
233 bool "tlv_eeprom for SPL"
234 depends on SPL_I2C_EEPROM
235 select SPL_DRIVERS_MISC
238 Read system EEPROM data block in ONIE Tlvinfo format from SPL.
242 depends on RISCV_SMODE && SBI_V02
244 Display information about the SBI implementation.
250 Display the SMBIOS information.
260 Run the command stored in the environment "bootcmd", i.e.
261 "bootd" does the same thing as "run bootcmd".
267 Boot an application image from the memory.
269 config CMD_BOOTM_PRE_LOAD
270 bool "enable pre-load on bootm"
272 depends on IMAGE_PRE_LOAD
274 Enable support of stage pre-load for the bootm command.
275 This stage allow to check or modify the image provided
276 to the bootm command.
281 default y if BOOTSTD_FULL
283 Support listing available bootdevs (boot devices) which can provide an
284 OS to boot, as well as showing information about a particular one.
286 This command is not necessary for bootstd to work.
293 Support scanning for bootflows available with the bootdevs. The
294 bootflows can optionally be booted.
296 config CMD_BOOTFLOW_FULL
297 bool "bootflow - extract subcommands"
298 depends on BOOTSTD_FULL
301 Add the ability to list the available bootflows, select one and obtain
302 information about it.
304 This command is not necessary for bootstd to work.
309 default y if BOOTSTD_FULL
311 Support listing available bootmethds (methods used to boot an
312 Operating System), as well as selecting the order that the bootmeths
315 This command is not necessary for bootstd to work.
318 bool "Support booting UEFI FIT images"
319 depends on EFI_BINARY_EXEC && CMD_BOOTM && FIT
322 Support booting UEFI FIT images via the bootm command.
327 Boot the Linux zImage
331 depends on ARM64 || RISCV || SANDBOX
334 Boot an AArch64 Linux Kernel image from memory.
337 bool "Support booting Linux OS images"
338 depends on CMD_BOOTM || CMD_BOOTZ || CMD_BOOTI
341 Support booting the Linux kernel directly via a command such as bootm
345 bool "Support booting NetBSD (non-EFI) loader images"
349 Support booting NetBSD via the bootm command.
351 config BOOTM_OPENRTOS
352 bool "Support booting OPENRTOS / FreeRTOS images"
355 Support booting OPENRTOS / FreeRTOS via the bootm command.
358 bool "Support booting Enea OSE images"
359 depends on (ARM && (ARM64 || CPU_V7A || CPU_V7R) || SANDBOX || PPC || X86)
362 Support booting Enea OSE images via the bootm command.
365 bool "Support booting Plan9 OS images"
369 Support booting Plan9 images via the bootm command.
372 bool "Support booting RTEMS OS images"
376 Support booting RTEMS images via the bootm command.
379 bool "Support read SEAMA NAND images"
380 depends on MTD_RAW_NAND
382 Support reading NAND Seattle Image (SEAMA) images.
385 bool "vbe - Verified Boot for Embedded"
386 depends on BOOTMETH_VBE
387 default y if BOOTSTD_FULL
389 Provides various subcommands related to VBE, such as listing the
390 available methods, looking at the state and changing which method
391 is used to boot. Updating the parameters is not currently
395 bool "Support booting VxWorks OS images"
399 Support booting VxWorks images via the bootm command.
403 depends on EFI_LOADER
406 Boot an EFI image from memory.
409 config CMD_BOOTEFI_BINARY
410 bool "Allow booting an EFI binary directly"
411 depends on EFI_BINARY_EXEC
414 Select this option to enable direct execution of binary at 'bootefi'.
415 This subcommand will allow you to load the UEFI binary using
416 other U-Boot commands or external methods and then run it.
418 config CMD_BOOTEFI_BOOTMGR
419 bool "UEFI Boot Manager command"
420 depends on EFI_BOOTMGR
423 Select this option to enable the 'bootmgr' subcommand of 'bootefi'.
424 This subcommand will allow you to select the UEFI binary to be booted
425 via UEFI variables Boot####, BootOrder, and BootNext.
427 config CMD_BOOTEFI_HELLO_COMPILE
428 bool "Compile a standard EFI hello world binary for testing"
431 This compiles a standard EFI hello world application with U-Boot so
432 that it can be used with the test/py testing framework. This is useful
433 for testing that EFI is working at a basic level, and for bringing
434 up EFI support on a new architecture.
436 No additional space will be required in the resulting U-Boot binary
437 when this option is enabled.
439 config CMD_BOOTEFI_HELLO
440 bool "Allow booting a standard EFI hello world for testing"
441 depends on CMD_BOOTEFI_BINARY && CMD_BOOTEFI_HELLO_COMPILE
442 default y if CMD_BOOTEFI_SELFTEST
444 This adds a standard EFI hello world application to U-Boot so that
445 it can be used with the 'bootefi hello' command. This is useful
446 for testing that EFI is working at a basic level, and for bringing
447 up EFI support on a new architecture.
449 source "lib/efi_selftest/Kconfig"
457 Add an ANSI terminal boot menu command.
462 Android DTB/DTBO image manipulation commands. Read dtb/dtbo files from
463 image into RAM, dump image structure information, etc. Those dtb/dtbo
464 files should be merged in one dtb further, which needs to be passed to
465 the kernel, as part of a boot process.
469 depends on ANDROID_BOOT_IMAGE
471 Android Boot Image manipulation commands. Allows one to extract
472 images contained in boot.img, like kernel, ramdisk, dtb, etc, and
473 obtain corresponding meta-information from boot.img.
475 See doc/android/boot-image.rst for details.
478 bool "cedit - Configuration editor"
482 Provides a command to allow editing of board configuration and
483 providing a UI for the user to adjust settings. Subcommands allow
484 loading and saving of configuration as well as showing an editor.
487 bool "bootelf, bootvx"
491 Boot an ELF/vxWorks image from the memory.
493 config CMD_ELF_FDT_SETUP
494 bool "Flattened Device Tree setup in bootelf cmd"
499 Do FDT setup in bootelf command optionally by param -d, which
500 allows to bring additional system info (e.g. /memory node) to
501 the Operating System or application.
504 bool "Flattened Device Tree utility commands"
508 Do FDT related setup before booting into the Operating System.
510 config SUPPORT_EXTENSION_SCAN
514 bool "Extension board management command"
516 depends on SUPPORT_EXTENSION_SCAN
518 Enables the "extension" command, which allows to detect
519 extension boards connected to the system, and apply
520 corresponding Device Tree overlays.
526 Start an application at a given address.
532 Run the command in the given environment variable.
538 Print header information for application image.
542 depends on MTD_NOR_FLASH || FLASH_CFI_DRIVER
544 List all images found in flash
550 Extract a part of a multi-image.
553 hex "imxtract max gunzip size"
555 depends on CMD_XIMG && GZIP
557 This provides the size of the commad-line argument area
558 used by imxtract for extracting pieces of FIT image.
559 It should be large enough to fit uncompressed size of
560 FIT piece we are extracting.
563 bool "spl export - Export boot information for Falcon boot"
566 Falcon mode allows booting directly from SPL into an Operating
567 System such as Linux, thus skipping U-Boot proper. See
568 doc/README.falcon for full information about how to use this
571 config CMD_SPL_NAND_OFS
572 hex "Offset of OS args or dtb for Falcon-mode NAND boot"
573 depends on CMD_SPL && (TPL_NAND_SUPPORT || SPL_NAND_SUPPORT)
576 This provides the offset of the command line arguments for Linux
577 when booting from NAND in Falcon mode. See doc/README.falcon
578 for full information about how to use this option (and also see
579 board/gateworks/gw_ventana/README for an example).
581 config CMD_SPL_NOR_OFS
582 hex "Offset of OS args or dtb for Falcon-mode NOR boot"
583 depends on CMD_SPL && SPL_NOR_SUPPORT
586 This provides the offset of the command line arguments or dtb for
587 Linux when booting from NOR in Falcon mode.
589 config CMD_SPL_WRITE_SIZE
590 hex "Size of argument area"
594 This provides the size of the command-line argument area in NAND
595 flash used by Falcon-mode boot. See the documentation until CMD_SPL
598 config CMD_THOR_DOWNLOAD
599 bool "thor - TIZEN 'thor' download"
601 select USB_FUNCTION_THOR
602 depends on USB_GADGET_DOWNLOAD
604 Implements the 'thor' download protocol. This is a way of
605 downloading a software update over USB from an attached host.
606 There is no documentation about this within the U-Boot source code
607 but you should be able to find something on the interwebs.
609 config THOR_RESET_OFF
610 bool "thor: Disable reset on completion"
611 depends on CMD_THOR_DOWNLOAD
614 bool "zboot - x86 boot command"
618 With x86 machines it is common to boot a bzImage file which
619 contains both a kernel and a setup.bin file. The latter includes
620 configuration information from the dark ages which x86 boards still
621 need to pick things out of.
623 Consider using FIT in preference to this since it supports directly
624 booting both 32- and 64-bit kernels, as well as secure boot.
625 Documentation is available in doc/uImage.FIT/x86-fit-boot.txt
629 menu "Environment commands"
632 bool "ask for env variable"
634 Ask for environment variable
652 Edit environment variable.
657 Allow for searching environment variables
663 Save all environment variables into the compiled-in persistent
668 depends on CMD_SAVEENV
670 Erase environment variables from the compiled-in persistent
673 config CMD_ENV_EXISTS
677 Check if a variable is defined in the environment for use in
680 config CMD_ENV_CALLBACK
681 bool "env callbacks - print callbacks and their associated variables"
683 Some environment variable have callbacks defined by
684 U_BOOT_ENV_CALLBACK. These are called when the variable changes.
685 For example changing "baudrate" adjust the serial baud rate. This
686 command lists the currently defined callbacks.
689 bool "env flags -print variables that have non-default flags"
691 Some environment variables have special flags that control their
692 behaviour. For example, serial# can only be written once and cannot
693 be deleted. This command shows the variables that have special
696 config CMD_NVEDIT_EFI
697 bool "env [set|print] -e - set/print UEFI variables"
698 depends on EFI_LOADER
701 UEFI variables are encoded as some form of U-Boot variables.
702 If enabled, we are allowed to set/print UEFI variables using
703 "env" command with "-e" option without knowing details.
705 config CMD_NVEDIT_INDIRECT
706 bool "env indirect - Sets environment value from another"
708 config CMD_NVEDIT_INFO
709 bool "env info - print or evaluate environment information"
711 Print environment information:
712 - env_valid : is environment valid
713 - env_ready : is environment imported into hash table
714 - env_use_default : is default environment used
716 This command can be optionally used for evaluation in scripts:
717 [-d] : evaluate whether default environment is used
718 [-p] : evaluate whether environment can be persisted
720 The result of multiple evaluations will be combined with AND.
722 config CMD_NVEDIT_LOAD
725 Load all environment variables from the compiled-in persistent
728 config CMD_NVEDIT_SELECT
731 Select the compiled-in persistent storage of environment variables.
735 menu "Memory commands"
740 Compute binary operations (xor, or, and) of byte arrays of arbitrary
741 size from memory and store the result in memory or the environment.
748 Show information about the bloblist, a collection of binary blobs
749 held in memory that persist between SPL and U-Boot. In the case of
750 x86 devices the bloblist can be used to hold ACPI tables so that they
751 remain available in memory.
764 Add -v option to verify data against a crc32 checksum.
767 bool "eeprom - EEPROM subsystem"
768 depends on DM_I2C || SYS_I2C_LEGACY
770 (deprecated, needs conversion to driver model)
771 Provides commands to read and write EEPROM (Electrically Erasable
772 Programmable Read Only Memory) chips that are connected over an
775 config CMD_EEPROM_LAYOUT
776 bool "Enable layout-aware eeprom commands"
777 depends on CMD_EEPROM
779 (deprecated, needs conversion to driver model)
780 When enabled, additional eeprom sub-commands become available.
782 eeprom print - prints the contents of the eeprom in a human-readable
783 way (eeprom layout fields, and data formatted to be fit for human
786 eeprom update - allows user to update eeprom fields by specifying
787 the field name, and providing the new data in a human readable format
788 (same format as displayed by the eeprom print command).
790 Both commands can either auto detect the layout, or be told which
794 __weak int parse_layout_version(char *str)
795 - override to provide your own layout name parsing
796 __weak void __eeprom_layout_assign(struct eeprom_layout *layout,
798 - override to setup the layout metadata based on the version
799 __weak int eeprom_layout_detect(unsigned char *data)
800 - override to provide your own algorithm for detecting layout
803 - contains various printing and updating functions for common
804 types of eeprom fields. Can be used for defining
807 config EEPROM_LAYOUT_HELP_STRING
808 string "Tells user what layout names are supported"
809 depends on CMD_EEPROM_LAYOUT
810 default "<not defined>"
812 Help printed with the LAYOUT VERSIONS part of the 'eeprom'
815 config SYS_I2C_EEPROM_BUS
816 int "I2C bus of the EEPROM device."
817 depends on CMD_EEPROM
820 config SYS_I2C_EEPROM_ADDR_LEN
821 int "Length in bytes of the EEPROM memory array address"
822 depends on CMD_EEPROM || ID_EEPROM
826 Note: This is NOT the chip address length!
828 config SYS_EEPROM_SIZE
829 depends on CMD_EEPROM
830 int "Size in bytes of the EEPROM device"
833 config SYS_EEPROM_PAGE_WRITE_BITS
834 int "Number of bits used to address bytes in a single page"
835 depends on CMD_EEPROM || ENV_IS_IN_EEPROM
838 The EEPROM page size is 2^SYS_EEPROM_PAGE_WRITE_BITS.
839 A 64 byte page, for example would require six bits.
841 config SYS_EEPROM_PAGE_WRITE_DELAY_MS
842 int "Number of milliseconds to delay between page writes"
843 depends on CMD_EEPROM || CMD_I2C
849 Infinite write loop on address range
856 Compute MD5 checksum.
860 depends on CMD_MD5SUM
862 Add -v option to verify data against an MD5 checksum.
867 Display memory information.
870 bool "md, mm, nm, mw, cp, cmp, base, loop"
875 mm - memory modify (auto-incrementing address)
876 nm - memory modify (constant address)
877 mw - memory write (fill)
880 base - print or set address offset
881 loop - initialize loop on address range
883 config CMD_MEM_SEARCH
884 bool "ms - Memory search"
886 Memory-search command
888 This allows searching through a region of memory looking for hex
889 data (byte, 16-bit word, 32-bit long, also 64-bit on machines that
890 support it). It is also possible to search for a string. The
891 command accepts a memory range and a list of values to search for.
892 The values need to appear in memory in the same order they are given
893 in the command. At most 10 matches can be returned at a time, but
894 pressing return will show the next 10 matches. Environment variables
895 are set for use with scripting (memmatches, memaddr, mempos).
898 bool "Enable cyclic md/mw commands"
899 depends on CMD_MEMORY
901 Add the "mdc" and "mwc" memory commands. These are cyclic
906 This command will print 4 bytes (10,11,12,13) each 500 ms.
908 => mwc.l 100 12345678 10
909 This command will write 12345678 to address 100 all 10 ms.
914 depends on CMD_MEMORY && (LIB_RAND || LIB_HW_RAND)
916 random - fill memory with random data
921 Simple RAM read/write test.
925 config SYS_ALT_MEMTEST
926 bool "Alternative test"
928 Use a more complete alternative memory test.
932 config SYS_ALT_MEMTEST_BITFLIP
936 The alternative memory test includes bitflip test since 2020.07.
937 The bitflip test significantly increases the overall test time.
938 Bitflip test can optionally be disabled here.
942 config SYS_MEMTEST_START
943 hex "default start address for mtest"
946 This is the default start address for mtest for simple read/write
947 test. If no arguments are given to mtest, default address is used
950 config SYS_MEMTEST_END
951 hex "default end address for mtest"
954 This is the default end address for mtest for simple read/write
955 test. If no arguments are given to mtest, default address is used
964 Compute SHA1 checksum.
966 config SHA1SUM_VERIFY
968 depends on CMD_SHA1SUM
970 Add -v option to verify data against a SHA1 checksum.
973 bool "strings - display strings in memory"
975 This works similarly to the Unix 'strings' command except that it
976 works with a memory range. String of printable characters found
977 within the range are displayed. The minimum number of characters
978 for a sequence to be considered a string can be provided.
982 menu "Compression commands"
986 default y if CMD_BOOTI
989 Support decompressing an LZMA (Lempel-Ziv-Markov chain algorithm)
994 default y if CMD_BOOTI
997 Support decompressing an LZ4 image from memory region.
1001 default y if CMD_BOOTI
1004 Uncompress a zip-compressed memory region.
1008 select GZIP_COMPRESSED
1010 Compress a memory region with zlib deflate method.
1014 menu "Device access commands"
1017 bool "Arm FF-A test command"
1018 depends on ARM_FFA_TRANSPORT
1020 Provides a test command for the FF-A support
1022 - Listing the partition(s) info
1023 - Sending a data pattern to the specified partition
1024 - Displaying the arm_ffa device info
1028 depends on FLASH_CFI_DRIVER
1030 ARM Ltd reference designs flash partition access
1033 bool "adc - Access Analog to Digital Converters info and data"
1035 depends on DM_REGULATOR
1037 Shows ADC device info and permit printing one-shot analog converted
1038 data from a named Analog to Digital Converter.
1042 depends on PARTITIONS
1044 Read/modify/write the fields of Bootloader Control Block, usually
1045 stored on the flash "misc" partition with its structure defined in:
1046 https://android.googlesource.com/platform/bootable/recovery/+/master/
1047 bootloader_message/include/bootloader_message/bootloader_message.h
1049 Some real-life use-cases include (but are not limited to):
1050 - Determine the "boot reason" (and act accordingly):
1051 https://source.android.com/devices/bootloader/boot-reason
1052 - Get/pass a list of commands from/to recovery:
1053 https://android.googlesource.com/platform/bootable/recovery
1054 - Inspect/dump the contents of the BCB fields
1057 bool "bind/unbind - Bind or unbind a device to/from a driver"
1061 Bind or unbind a device to/from a driver from the command line.
1062 This is useful in situations where a device may be handled by several
1063 drivers. For example, this can be used to bind a UDC to the usb ether
1064 gadget driver from the command line.
1067 bool "clk - Show clock frequencies"
1070 Shows clock frequences by calling a sock_clk_dump() hook function.
1071 This is depreated in favour of using the CLK uclass and accessing
1072 clock values from associated drivers. However currently no command
1076 bool "demo - Demonstration commands for driver model"
1079 Provides a 'demo' command which can be used to play around with
1080 driver model. To use this properly you will need to enable one or
1081 both of the demo devices (DM_DEMO_SHAPE and DM_DEMO_SIMPLE).
1082 Otherwise you will always get an empty list of devices. The demo
1083 devices are defined in the sandbox device tree, so the easiest
1084 option is to use sandbox and pass the -d point to sandbox's
1091 Enables the command "dfu" which is used to have U-Boot create a DFU
1092 class device via USB. This command requires that the "dfu_alt_info"
1093 environment variable be set and define the alt settings to expose to
1097 bool "dm - Access to driver model information"
1100 Provides access to driver model data structures and information,
1101 such as a list of devices, list of uclasses and the state of each
1102 device (e.g. activated). This is not required for operation, but
1103 can be useful to see the state of driver model for debugging or
1107 bool "fastboot - Android fastboot support"
1110 This enables the command "fastboot" which enables the Android
1111 fastboot mode for the platform. Fastboot is a protocol for
1112 downloading images, flashing and device control used on
1113 Android devices. Fastboot requires either the network stack
1114 enabled or support for acting as a USB device.
1116 See doc/android/fastboot.rst for more information.
1119 bool "flinfo, erase, protect"
1121 depends on FLASH_CFI_DRIVER || MTD_NOR_FLASH
1124 flinfo - print FLASH memory information
1125 erase - FLASH memory
1126 protect - enable or disable FLASH write protection
1135 config CMD_FPGA_LOADBP
1136 bool "fpga loadbp - load partial bitstream (Xilinx only)"
1139 Supports loading an FPGA device from a bitstream buffer containing
1140 a partial bitstream.
1142 config CMD_FPGA_LOADFS
1143 bool "fpga loadfs - load bitstream from FAT filesystem (Xilinx only)"
1146 Supports loading an FPGA device from a FAT filesystem.
1148 config CMD_FPGA_LOADMK
1149 bool "fpga loadmk - load bitstream from image"
1152 Supports loading an FPGA device from a image generated by mkimage.
1154 config CMD_FPGA_LOADP
1155 bool "fpga loadp - load partial bitstream"
1158 Supports loading an FPGA device from a bitstream buffer containing
1159 a partial bitstream.
1161 config CMD_FPGA_LOAD_SECURE
1162 bool "fpga loads - loads secure bitstreams"
1164 select FPGA_LOAD_SECURE
1166 Enables the fpga loads command which is used to load secure
1167 (authenticated or encrypted or both) bitstreams on to FPGA.
1170 bool "fpgad - dump FPGA registers"
1171 depends on GDSYS_LEGACY_DRIVERS
1173 (legacy, needs conversion to driver model)
1174 Provides a way to dump FPGA registers by calling the board-specific
1175 fpga_get_reg() function. This functions similarly to the 'md'
1179 bool "fuse - support for the fuse subssystem"
1181 (deprecated - needs conversion to driver model)
1182 This allows reading, sensing, programming or overriding fuses
1183 which control the behaviour of the device. The command uses the
1191 config CMD_GPIO_READ
1192 bool "gpio read - save GPIO value to variable"
1195 Enables the 'gpio read' command that saves the value
1196 of a GPIO pin to a variable.
1202 Control PWM channels, this allows invert/config/enable/disable PWM channels.
1205 bool "GPT (GUID Partition Table) command"
1206 select EFI_PARTITION
1207 select PARTITION_UUIDS
1210 Enable the 'gpt' command to ready and write GPT style partition
1213 config CMD_GPT_RENAME
1214 bool "GPT partition renaming commands"
1217 Enables the 'gpt' command to interchange names on two GPT
1218 partitions via the 'gpt swap' command or to rename single
1219 partitions via the 'rename' command.
1222 bool "ide - Support for IDE drivers"
1225 Provides an 'ide' command which allows accessing the IDE drive,
1226 resetting the IDE interface, printing the partition table and
1227 geting device info. It also enables the 'diskboot' command which
1228 permits booting from an IDE drive.
1231 bool "io - Support for performing I/O accesses"
1233 Provides an 'iod' command to display I/O space and an 'iow' command
1234 to write values to the I/O space. This can be useful for manually
1235 checking the state of devices during boot when debugging device
1239 bool "iotrace - Support for tracing I/O activity"
1241 Provides an 'iotrace' command which supports recording I/O reads and
1242 writes in a trace buffer in memory . It also maintains a checksum
1243 of the trace records (even if space is exhausted) so that the
1244 sequence of I/O accesses can be verified.
1246 When debugging drivers it is useful to see what I/O accesses were
1247 done and in what order.
1249 Even if the individual accesses are of little interest it can be
1250 useful to verify that the access pattern is consistent each time
1251 an operation is performed. In this case a checksum can be used to
1252 characterise the operation of a driver. The checksum can be compared
1253 across different runs of the operation to verify that the driver is
1256 In particular, when performing major refactoring of the driver, where
1257 the access pattern should not change, the checksum provides assurance
1258 that the refactoring work has not broken the driver.
1260 This works by sneaking into the io.h heder for an architecture and
1261 redirecting I/O accesses through iotrace's tracing mechanism.
1263 For now no commands are provided to examine the trace buffer. The
1264 format is fairly simple, so 'md' is a reasonable substitute.
1266 Note: The checksum feature is only useful for I/O regions where the
1267 contents do not change outside of software control. Where this is not
1268 suitable you can fall back to manually comparing the addresses. It
1269 might be useful to enhance tracing to only checksum the accesses and
1270 not the data read/written.
1280 bool "w1 - Support for Dallas 1-Wire protocol"
1282 Dallas 1-wire protocol support
1288 Load a binary file over serial line.
1293 Load a binary over memory mapped.
1296 bool "loads - Load a file over serial in S-Record format"
1299 Load an S-Record file over serial line
1302 bool "Echo all characters received during a loads back to console"
1303 depends on CMD_LOADS
1305 If enabled, all characters received during a serial download (using
1306 the "loads" command) are echoed back. This might be needed by some
1307 terminal emulations (like "cu"), but may as well just take time on
1308 others. This sets the initial value of the "loads_echo" environment
1312 bool "saves - Save a file over serial in S-Record format"
1313 depends on CMD_LOADS
1315 Provides a way to save a binary file using the Motorola S-Record
1316 format over the serial line.
1318 config SYS_LOADS_BAUD_CHANGE
1319 bool "Enable a temporary baudrate change during loads/saves command"
1320 depends on CMD_LOADS || CMD_SAVES
1322 config CMD_LOADXY_TIMEOUT
1323 int "loadxy_timeout"
1327 Initial timeout for loadx and loady commands. Zero means infinity.
1331 bool "lsblk - list block drivers and devices"
1333 Print list of available block device drivers, and for each, the list
1334 of known block devices.
1337 bool "MBR (Master Boot Record) command"
1338 select DOS_PARTITION
1340 Enable the 'mbr' command to ready and write MBR (Master Boot Record)
1341 style partition tables.
1347 Enable the command "misc" for accessing miscellaneous devices with
1348 a MISC uclass driver. The command provides listing all MISC devices
1349 as well as read and write functionalities via their drivers.
1355 MMC memory mapped support.
1359 config CMD_BKOPS_ENABLE
1360 bool "mmc bkops enable"
1363 Enable command for setting manual background operations handshake
1364 on a eMMC device. The feature is optionally available on eMMC devices
1365 conforming to standard >= 4.41.
1368 bool "Enable support for reading card registers in the mmc command"
1371 Enable the commands for reading card registers. This is useful
1372 mostly for debugging or extracting details from the card.
1375 bool "Enable support for RPMB in the mmc command"
1376 depends on SUPPORT_EMMC_RPMB
1378 Enable the commands for reading, writing and programming the
1379 key for the Replay Protection Memory Block partition in eMMC.
1381 config CMD_MMC_SWRITE
1383 depends on MMC_WRITE
1386 Enable support for the "mmc swrite" command to write Android sparse
1395 Enable storage cloning over block devices, useful for
1396 initial flashing by external block device without network
1399 config CMD_OPTEE_RPMB
1400 bool "Enable read/write support on RPMB via OPTEE"
1401 depends on (SUPPORT_EMMC_RPMB && OPTEE) || SANDBOX_TEE
1402 default y if SANDBOX_TEE
1403 select OPTEE_TA_AVB if SANDBOX_TEE
1405 Enable the commands for reading, writing persistent named values
1406 in the Replay Protection Memory Block partition in eMMC by
1407 using Persistent Objects in OPTEE
1412 select MTD_PARTITIONS
1414 MTD commands support.
1421 MTD commands for OTP access.
1425 depends on MULTIPLEXER
1427 List, select, and deselect mux controllers on the fly.
1431 default y if NAND_SUNXI
1432 depends on MTD_RAW_NAND
1437 config CMD_NAND_TRIMFFS
1438 bool "nand write.trimffs"
1439 default y if ARCH_SUNXI
1441 Allows one to skip empty pages when flashing something on a NAND.
1443 config CMD_NAND_LOCK_UNLOCK
1444 bool "nand lock/unlock"
1446 NAND locking support.
1448 config CMD_NAND_TORTURE
1451 NAND torture support.
1460 NVM Express device support
1463 bool "onenand - access to onenand device"
1466 OneNAND is a brand of NAND ('Not AND' gate) flash which provides
1467 various useful features. This command allows reading, writing,
1468 and erasing blocks. It allso provides a way to show and change
1469 bad blocks, and test the device.
1471 config USE_ONENAND_BOARD_INIT
1472 bool "Call onenand_board_init() in the onenand command"
1473 depends on CMD_ONENAND
1478 Enable the 'osd' command which allows to query information from and
1479 write text data to a on-screen display (OSD) device; a virtual device
1480 associated with a display capable of displaying a text overlay on the
1481 display it's associated with..
1485 depends on PARTITIONS
1486 select PARTITION_UUIDS
1488 Read and display information about the partition table on
1492 bool "pci - Access PCI devices"
1494 Provide access to PCI (Peripheral Interconnect Bus), a type of bus
1495 used on some devices to allow the CPU to communicate with its
1496 peripherals. Sub-commands allow bus enumeration, displaying and
1497 changing configuration space and a few other features.
1500 bool "pci_mps - Configure PCI device MPS"
1503 Enables PCI Express Maximum Packet Size (MPS) tuning. This
1504 command configures the PCI Express MPS of each endpoint to the
1505 largest value supported by all devices below the root complex.
1506 The Maximum Read Request Size will not be altered. This method is
1507 the same algorithm as used by Linux pci=pcie_bus_safe.
1510 bool "pinmux - show pins muxing"
1512 default y if PINCTRL
1514 Parse all available pin-controllers and show pins muxing. This
1515 is useful for debug purpoer to check the pin muxing and to know if
1516 a pin is configured as a GPIO or as an alternate function.
1521 Poweroff/Shutdown the system
1524 bool "read - Read binary data from a partition"
1526 Provides low-level access to the data in a partition.
1528 config CMD_REMOTEPROC
1530 depends on REMOTEPROC
1532 Support for Remote Processor control
1535 bool "sata - Access SATA subsystem"
1538 SATA (Serial Advanced Technology Attachment) is a serial bus
1539 standard for connecting to hard drives and other storage devices.
1540 This command provides information about attached devices and allows
1541 reading, writing and other operations.
1543 SATA replaces PATA (originally just ATA), which stands for Parallel AT
1544 Attachment, where AT refers to an IBM AT (Advanced Technology)
1545 computer released in 1984.
1548 bool "scsi - Access to SCSI devices"
1552 This provides a 'scsi' command which provides access to SCSI (Small
1553 Computer System Interface) devices. The command provides a way to
1554 scan the bus, reset the bus, read and write data and get information
1558 bool "sdram - Print SDRAM configuration information"
1560 Provides information about attached SDRAM. This assumed that the
1561 SDRAM has an EEPROM with information that can be read using the
1562 I2C bus. This is only available on some boards.
1566 depends on DM_SPI_FLASH || SPI_FLASH
1567 default y if DM_SPI_FLASH
1572 bool "sf test - Allow testing of SPI flash"
1575 Provides a way to test that SPI flash is working correctly. The
1576 test is destructive, in that an area of SPI flash must be provided
1577 for the test to use. Performance information is also provided,
1578 measuring the performance of reading, writing and erasing in
1579 Mbps (Million Bits Per Second). This value should approximately
1580 equal the SPI bus speed for a single-bit-wide SPI bus, assuming
1581 everything is working properly.
1584 bool "sspi - Command to access spi device"
1587 SPI utility command.
1589 config DEFAULT_SPI_BUS
1590 int "default spi bus used by sspi command"
1594 config DEFAULT_SPI_MODE
1595 hex "default spi mode used by sspi command (see include/spi.h)"
1599 config CMD_TEMPERATURE
1600 bool "temperature - display the temperature from thermal sensors"
1601 depends on DM_THERMAL
1603 Provides a way to list thermal sensors and to get their readings.
1606 bool "tsi148 - Command to access tsi148 device"
1607 depends on DM_PCI_COMPAT
1609 This provides various sub-commands to initialise and configure the
1610 Turndra tsi148 device. See the command help for full details.
1613 bool "ufs - Universal Flash Storage commands"
1616 "This provides commands to initialise and configure universal flash
1620 bool "universe - Command to set up the Turndra Universe controller"
1621 depends on DM_PCI_COMPAT
1623 This allows setting up the VMEbus provided by this controller.
1624 See the command help for full details.
1634 select USB_FUNCTION_SDP
1636 Enables the command "sdp" which is used to have U-Boot emulating the
1637 Serial Download Protocol (SDP) via USB.
1643 Enable the command "rkmtd" to create a virtual block device to transfer
1644 Rockchip boot block data to and from NAND with block orientated tools
1645 like "ums" and "rockusb".
1649 depends on USB_FUNCTION_ROCKUSB
1651 Rockusb protocol is widely used by Rockchip SoC based devices. It can
1652 read/write info, image to/from devices. This enable rockusb command
1653 support to communication with rockusb device. for more detail about
1654 this command, please read doc/README.rockusb.
1656 config CMD_USB_MASS_STORAGE
1657 bool "UMS usb mass storage"
1658 depends on USB_GADGET_DOWNLOAD
1659 select USB_FUNCTION_MASS_STORAGE
1660 depends on BLK && USB_GADGET
1662 Enables the command "ums" and the USB mass storage support to the
1663 export a block device: U-Boot, the USB device, acts as a simple
1664 external hard drive plugged on the host USB port.
1666 config CMD_UMS_ABORT_KEYED
1667 bool "UMS abort with any key"
1668 depends on CMD_USB_MASS_STORAGE
1670 Allow interruption of usb mass storage run with any key pressed.
1673 bool "Xen para-virtualized block device"
1677 Xen para-virtualized block device support
1684 VirtIO block device support
1690 This provides commands to control the watchdog timer devices.
1693 bool "write - Write binary data to a partition"
1695 Provides low-level write access to a partition.
1701 Enable the command "axi" for accessing AXI (Advanced eXtensible
1702 Interface) busses, a on-chip interconnect specification for managing
1703 functional blocks in SoC designs, which is also often used in designs
1704 involving FPGAs (e.g. communication with IP cores in Xilinx FPGAs).
1708 menu "Shell scripting commands"
1713 Print file to standard output
1719 Echo args to console
1725 Return true/false on integer compare.
1731 Run script from memory
1737 Evaluate boolean and math expressions and store the result in an env
1739 Also supports loading the value at a memory location into a variable.
1740 If CONFIG_REGEX is enabled, setexpr also supports a gsub function.
1742 config CMD_SETEXPR_FMT
1744 depends on CMD_SETEXPR
1746 Evaluate format string expression and store result in an environment
1752 Print file as hexdump to standard output
1756 menu "Android support commands"
1758 config CMD_AB_SELECT
1760 depends on ANDROID_AB
1762 On Android devices with more than one boot slot (multiple copies of
1763 the kernel and system images) this provides a command to select which
1764 slot should be used to boot from and register the boot attempt. This
1765 is used by the new A/B update model where one slot is updated in the
1766 background while running from the other slot.
1773 bool "Network commands"
1782 bootp - boot image via network using BOOTP/TFTP protocol
1786 depends on CMD_BOOTP
1788 Boot image via network using DHCP/TFTP protocol
1794 Boot image via network using DHCPv6/TFTP protocol using IPv6.
1796 Will perform 4-message exchange with DHCPv6 server, requesting
1797 the minimum required options to TFTP boot. Complies with RFC 8415.
1799 config BOOTP_MAY_FAIL
1800 bool "Allow for the BOOTP/DHCP server to not be found"
1801 depends on CMD_BOOTP
1803 If the DHCP server is not found after the configured retry count, the
1804 call will fail instead of starting over. This can be used to fail
1805 over to Link-local IP address configuration if the DHCP server is not
1808 config BOOTP_BOOTPATH
1809 bool "Request & store 'rootpath' from BOOTP/DHCP server"
1811 depends on CMD_BOOTP
1813 Even though the config is called BOOTP_BOOTPATH, it stores the
1814 path in the variable 'rootpath'.
1816 config BOOTP_VENDOREX
1817 bool "Support vendor extensions from BOOTP/DHCP server"
1818 depends on CMD_BOOTP
1820 config BOOTP_BOOTFILESIZE
1821 bool "Request & store 'bootfilesize' from BOOTP/DHCP server"
1822 depends on CMD_BOOTP
1825 bool "Request & store 'dnsip' from BOOTP/DHCP server"
1827 depends on CMD_BOOTP
1829 The primary DNS server is stored as 'dnsip'. If two servers are
1830 returned, you must set BOOTP_DNS2 to store that second server IP
1834 bool "Store 'dnsip2' from BOOTP/DHCP server"
1835 depends on BOOTP_DNS
1837 If a DHCP client requests the DNS server IP from a DHCP server,
1838 it is possible that more than one DNS serverip is offered to the
1839 client. If CONFIG_BOOTP_DNS2 is enabled, the secondary DNS
1840 server IP will be stored in the additional environment
1841 variable "dnsip2". The first DNS serverip is always
1842 stored in the variable "dnsip", when BOOTP_DNS is defined.
1844 config BOOTP_GATEWAY
1845 bool "Request & store 'gatewayip' from BOOTP/DHCP server"
1847 depends on CMD_BOOTP
1849 config BOOTP_HOSTNAME
1850 bool "Request & store 'hostname' from BOOTP/DHCP server"
1852 depends on CMD_BOOTP
1854 The name may or may not be qualified with the local domain name.
1856 config BOOTP_PREFER_SERVERIP
1857 bool "serverip variable takes precedent over DHCP server IP."
1858 depends on CMD_BOOTP
1860 By default a BOOTP/DHCP reply will overwrite the 'serverip' variable.
1862 With this option enabled, the 'serverip' variable in the environment
1863 takes precedence over DHCP server IP and will only be set by the DHCP
1864 server if not already set in the environment.
1866 config BOOTP_SUBNETMASK
1867 bool "Request & store 'netmask' from BOOTP/DHCP server"
1869 depends on CMD_BOOTP
1871 config BOOTP_NISDOMAIN
1872 bool "Request & store 'nisdomain' from BOOTP/DHCP server"
1873 depends on CMD_BOOTP
1875 config BOOTP_NTPSERVER
1876 bool "Request & store 'ntpserverip' from BOOTP/DHCP server"
1877 depends on CMD_BOOTP
1879 config BOOTP_TIMEOFFSET
1880 bool "Request & store 'timeoffset' from BOOTP/DHCP server"
1881 depends on CMD_BOOTP && CMD_SNTP
1886 Selecting this will allow capturing all Ethernet packets and store
1887 them in physical memory in a PCAP formated file,
1888 later to be analyzed by PCAP reader application (IE. WireShark).
1891 bool "Send PXE client arch to BOOTP/DHCP server"
1893 depends on CMD_BOOTP && CMD_PXE
1895 Supported for ARM, ARM64, and x86 for now.
1897 config BOOTP_PXE_CLIENTARCH
1899 depends on BOOTP_PXE
1900 default 0x16 if ARM64
1904 config BOOTP_PXE_DHCP_OPTION
1905 bool "Request & store 'pxe_configfile' from BOOTP/DHCP server"
1906 depends on BOOTP_PXE
1908 config BOOTP_VCI_STRING
1910 depends on CMD_BOOTP
1911 default "U-Boot.armv7" if CPU_V7A || CPU_V7M || CPU_V7R
1912 default "U-Boot.armv8" if ARM64
1913 default "U-Boot.arm" if ARM
1918 config DHCP6_PXE_CLIENTARCH
1920 default 0x16 if ARM64
1924 config DHCP6_PXE_DHCP_OPTION
1925 bool "Request & store 'pxe_configfile' from DHCP6 server"
1927 config DHCP6_ENTERPRISE_ID
1928 int "Enterprise ID to send in DHCPv6 Vendor Class Option"
1937 tftpboot - load file via network using TFTP protocol
1941 depends on CMD_TFTPBOOT
1943 TFTP put command, for uploading files to a server
1947 depends on CMD_TFTPBOOT
1949 Act as a TFTP server and boot the first received file
1951 config NET_TFTP_VARS
1952 bool "Control TFTP timeout and count through environment"
1953 depends on CMD_TFTPBOOT
1956 If set, allows controlling the TFTP timeout through the
1957 environment variable tftptimeout, and the TFTP maximum
1958 timeout count through the variable tftptimeoutcountmax.
1959 If unset, timeout and maximum are hard-defined as 1 second
1960 and 10 timouts per TFTP transfer.
1965 Boot image via network using RARP/TFTP protocol
1970 Boot image via network using NFS protocol.
1973 int "Timeout in milliseconds for NFS mounts"
1977 Timeout in milliseconds used in NFS protocol. If you encounter
1978 "ERROR: Cannot umount" in nfs command, try longer timeout such as
1981 config SYS_DISABLE_AUTOLOAD
1982 bool "Disable automatically loading files over the network"
1983 depends on CMD_BOOTP || CMD_DHCP || CMD_NFS || CMD_RARP
1985 Typically, commands such as "dhcp" will attempt to automatically
1986 load a file from the network, once the initial network configuration
1987 is complete. Enable this option to disable this behavior and instead
1988 require files to be loaded over the network by subsequent commands.
1994 wget is a simple command to download kernel, or other files,
1995 from a http server over TCP.
2001 If set, allows 802.3(clause 22) MII Management functions interface access
2002 The management interface specified in Clause 22 provides
2003 a simple, two signal, serial interface to connect a
2004 Station Management entity and a managed PHY for providing access
2005 to management parameters and services.
2006 The interface is referred to as the MII management interface.
2009 bool "Call mii_init() in the mii command"
2010 depends on CMD_MII && (MPC8XX_FEC || FSLDMAFE || MCFFEC)
2016 If set, allows Enable 802.3(clause 45) MDIO interface registers access
2017 The MDIO interface is orthogonal to the MII interface and extends
2018 it by adding access to more registers through indirect addressing.
2023 Send ICMP ECHO_REQUEST to network host
2028 default y if (CMD_PING && IPV6)
2030 Send ICMPv6 ECHO_REQUEST to network host
2035 Perform CDP network configuration
2041 Synchronize RTC via network
2046 Lookup the IP of a hostname
2048 config CMD_LINK_LOCAL
2052 Acquire a network IP address using the link-local protocol
2058 Manually configure the attached NIC via NC-SI.
2059 Normally this happens automatically before other network
2062 config IPV6_ROUTER_DISCOVERY
2063 bool "Do IPv6 router discovery"
2066 Will automatically perform router solicitation on first IPv6
2073 Allow control of L2 Ethernet switch commands. These are supported
2074 by the vsc9953 Ethernet driver at present. Sub-commands allow
2075 operations such as enabling / disabling a port and
2076 viewing/maintaining the filtering database (FDB)
2082 Boot image via network using PXE protocol
2087 Wait for wake-on-lan Magic Packet
2091 menu "Misc commands"
2096 This is a simple sliding block puzzle game designed by Italian web
2097 developer Gabriele Cirulli. The game's objective is to slide numbered
2098 tiles on a grid to combine them to create a tile with the number
2101 This needs ANSI support on your terminal to work. It is not fully
2102 functional on a video device.
2105 bool "Enable 'bmp' command"
2109 This provides a way to obtain information about a BMP-format image
2110 and to display it. BMP (which presumably stands for BitMaP) is a
2111 file format defined by Microsoft which supports images of various
2112 depths, formats and compression methods. Headers on the file
2113 determine the formats used. This command can be used by first loading
2114 the image into RAM, then using this command to look at it or display
2117 config CMD_BOOTCOUNT
2119 depends on BOOTCOUNT_LIMIT
2121 Enable the bootcount command, which allows interrogation and
2122 reset of the bootcounter.
2125 bool "Enable board-specific commands"
2127 (deprecated: instead, please define a Kconfig option for each command)
2129 Some boards have board-specific commands which are only enabled
2130 during developemnt and need to be turned off for production. This
2131 option provides a way to control this. The commands that are enabled
2132 vary depending on the board.
2134 config CMD_BLOCK_CACHE
2135 bool "blkcache - control and stats for block cache"
2136 depends on BLOCK_CACHE
2137 default y if BLOCK_CACHE
2139 Enable the blkcache command, which can be used to control the
2140 operation of the cache functions.
2141 This is most useful when fine-tuning the operation of the cache
2142 during development, but also allows the cache to be disabled when
2143 it might hurt performance (e.g. when using the ums command).
2146 bool "blkmap - Composable virtual block devices"
2150 Create virtual block devices that are backed by various sources,
2151 e.g. RAM, or parts of an existing block device. Though much more
2152 rudimentary, it borrows a lot of ideas from Linux's device mapper
2156 - Treat a region of RAM as a block device, i.e. a RAM disk. This let's
2157 you extract files from filesystem images stored in RAM (perhaps as a
2158 result of a TFTP transfer).
2159 - Create a virtual partition on an existing device. This let's you
2160 access filesystems that aren't stored at an exact partition
2161 boundary. A common example is a filesystem image embedded in an FIT
2169 Enable the 'button' command which allows to get the status of
2170 buttons supported by the board. The buttonss can be listed with
2171 'button list' and state can be known with 'button <label>'.
2172 Any button drivers can be controlled with this command, e.g.
2176 bool "icache or dcache"
2178 Enable the "icache" and "dcache" commands
2180 config CMD_CONITRACE
2181 bool "conitrace - trace console input codes"
2183 Enable the 'conitrace' command which displays the codes received
2184 from the console input as hexadecimal numbers.
2187 bool "Enable clear screen command 'cls'"
2188 default y if LCD || VIDEO
2190 Enable the 'cls' command which clears the screen contents
2191 on video frame buffer.
2194 bool "efidebug - display/configure UEFI environment"
2195 depends on EFI_LOADER
2196 select EFI_DEVICE_PATH_TO_TEXT
2198 Enable the 'efidebug' command which provides a subset of UEFI
2199 shell utility with simplified functionality. It will be useful
2200 particularly for managing boot parameters as well as examining
2201 various EFI status for debugging.
2203 config CMD_EFICONFIG
2204 bool "eficonfig - provide menu-driven uefi variables maintenance interface"
2205 default y if !HAS_BOARD_SIZE_LIMIT
2206 depends on EFI_BOOTMGR
2209 Enable the 'eficonfig' command which provides the menu-driven UEFI
2210 variable maintenance interface.
2212 config CMD_EXCEPTION
2213 bool "exception - raise exception"
2214 depends on ARM || RISCV || SANDBOX || X86
2216 Enable the 'exception' command which allows to raise an exception.
2223 Enable the 'led' command which allows for control of LEDs supported
2224 by the board. The LEDs can be listed with 'led list' and controlled
2225 with led on/off/togle/blink. Any LED drivers can be controlled with
2226 this command, e.g. led_gpio.
2231 Enable the 'ini' command which allows a .ini file to be parsed and
2232 placed into environment variables. Please check the source code for
2233 this as there is no documentation.
2240 Enable the 'date' command for getting/setting the time/date in RTC
2247 Enable the 'rtc' command for low-level access to RTC devices.
2252 Run commands and summarize execution time.
2255 bool "gettime - read elapsed time"
2257 Enable the 'gettime' command which reads the elapsed time since
2258 U-Boot started running. This shows the time in seconds and
2259 milliseconds. See also the 'bootstage' command which provides more
2260 flexibility for boot timing.
2263 bool "pause command"
2265 Delay execution waiting for any user input.
2266 Useful to allow the user to read a failure log.
2271 default y if SANDBOX
2274 Print bytes from the hardware random number generator.
2276 config CMD_KASLRSEED
2280 Set the kaslr-seed in the chosen node with entropy provided by a
2281 hardware random number generator.
2287 Delay execution for some time
2290 bool "support for multiprocessor commands"
2294 This enables commands to bringup different processors
2295 in multiprocessor cases.
2300 Access the system timer.
2306 This provides basic access to the U-Boot's sound support. The main
2307 feature is to play a beep.
2309 sound init - set up sound system
2310 sound play - play a sound
2316 Boot image via local extlinux.conf file
2321 default y if TARGET_QEMU_ARM_32BIT || TARGET_QEMU_ARM_64BIT || \
2322 TARGET_QEMU_X86 || TARGET_QEMU_X86_64
2324 This provides access to the QEMU firmware interface. The main
2325 feature is to allow easy loading of files passed to qemu-system
2326 via -kernel / -initrd
2331 This provides access to Linux PStore with Rammoops backend. The main
2332 feature is to allow to display or save PStore records.
2334 See doc/pstore.rst for more information.
2338 config CMD_PSTORE_MEM_ADDR
2339 hex "Memory Address"
2340 depends on CMD_PSTORE
2342 Base addr used for PStore ramoops memory, should be identical to
2343 ramoops.mem_address parameter used by kernel
2345 config CMD_PSTORE_MEM_SIZE
2347 depends on CMD_PSTORE
2350 Size of PStore ramoops memory, should be identical to ramoops.mem_size
2351 parameter used by kernel, a power of 2 and larger than the sum of the
2354 config CMD_PSTORE_RECORD_SIZE
2355 hex "Dump record size"
2356 depends on CMD_PSTORE
2359 Size of each dump done on oops/panic, should be identical to
2360 ramoops.record_size parameter used by kernel and a power of 2
2363 config CMD_PSTORE_CONSOLE_SIZE
2364 hex "Kernel console log size"
2365 depends on CMD_PSTORE
2368 Size of kernel console log, should be identical to
2369 ramoops.console_size parameter used by kernel and a power of 2
2372 config CMD_PSTORE_FTRACE_SIZE
2373 hex "FTrace log size"
2374 depends on CMD_PSTORE
2377 Size of ftrace log, should be identical to ramoops.ftrace_size
2378 parameter used by kernel and a power of 2
2380 config CMD_PSTORE_PMSG_SIZE
2381 hex "User space message log size"
2382 depends on CMD_PSTORE
2385 Size of user space message log, should be identical to
2386 ramoops.pmsg_size parameter used by kernel and a power of 2
2388 config CMD_PSTORE_ECC_SIZE
2390 depends on CMD_PSTORE
2393 if non-zero, the option enables ECC support and specifies ECC buffer
2394 size in bytes (1 is a special value, means 16 bytes ECC), should be
2395 identical to ramoops.ramoops_ecc parameter used by kernel
2399 source "cmd/mvebu/Kconfig"
2402 bool "terminal - provides a way to attach a serial terminal"
2404 Provides a 'cu'-like serial terminal command. This can be used to
2405 access other serial ports from the system console. The terminal
2406 is very simple with no special processing of characters. As with
2407 cu, you can press ~. (tilde followed by period) to exit.
2410 bool "uuid, guid - generation of unique IDs"
2413 This enables two commands:
2415 uuid - generate random Universally Unique Identifier
2416 guid - generate Globally Unique Identifier based on random UUID
2418 The two commands are very similar except for the endianness of the
2421 config CMD_VIDCONSOLE
2422 bool "lcdputs and setcurs"
2426 Enabling this will provide 'setcurs' and 'lcdputs' commands which
2427 support cursor positioning and drawing strings on the video
2428 console (framebuffer).
2430 The name 'lcdputs' is a bit of a misnomer, but so named because the
2431 video device is often an LCD.
2433 config CMD_SELECT_FONT
2434 bool "select font size"
2436 default y if CONSOLE_TRUETYPE
2438 Enabling this will provide 'font' command.
2439 Allows font selection at runtime.
2443 source "cmd/ti/Kconfig"
2445 config CMD_BOOTSTAGE
2446 bool "Enable the 'bootstage' command"
2447 depends on BOOTSTAGE
2449 Add a 'bootstage' command which supports printing a report
2450 and un/stashing of bootstage data.
2452 menu "Power commands"
2454 bool "Enable Driver Model PMIC command"
2457 This is the pmic command, based on a driver model pmic's API.
2458 Command features are unchanged:
2459 - list - list pmic devices
2460 - pmic dev <id> - show or [set] operating pmic device (NEW)
2461 - pmic dump - dump registers
2462 - pmic read address - read byte of register at address
2463 - pmic write address - write byte to register at address
2464 The only one change for this command is 'dev' subcommand.
2466 config CMD_REGULATOR
2467 bool "Enable Driver Model REGULATOR command"
2468 depends on DM_REGULATOR
2470 This command is based on driver model regulator's API.
2471 User interface features:
2472 - list - list regulator devices
2473 - regulator dev <id> - show or [set] operating regulator device
2474 - regulator info - print constraints info
2475 - regulator status - print operating status
2476 - regulator value <val] <-f> - print/[set] voltage value [uV]
2477 - regulator current <val> - print/[set] current value [uA]
2478 - regulator mode <id> - print/[set] operating mode id
2479 - regulator enable - enable the regulator output
2480 - regulator disable - disable the regulator output
2482 The '-f' (force) option can be used for set the value which exceeds
2483 the limits, which are found in device-tree and are kept in regulator's
2484 uclass plat structure.
2488 menu "Security commands"
2490 bool "Enable the 'aes' command"
2493 This provides a means to encrypt and decrypt data using the AES
2494 (Advanced Encryption Standard). This algorithm uses a symetric key
2495 and is widely used as a streaming cipher. Different key lengths are
2496 supported by the algorithm but this command only supports 128 bits
2500 bool "Enable the 'blob' command"
2501 depends on !MX6ULL && !MX6SLL && !MX6SL
2502 select IMX_HAB if ARCH_MX6 || ARCH_MX7 || ARCH_MX7ULP || ARCH_IMX8M
2504 This is used with the Freescale secure boot mechanism.
2506 Freescale's SEC block has built-in Blob Protocol which provides
2507 a method for protecting user-defined data across system power
2508 cycles. SEC block protects data in a data structure called a Blob,
2509 which provides both confidentiality and integrity protection.
2511 Encapsulating data as a blob
2512 Each time that the Blob Protocol is used to protect data, a
2513 different randomly generated key is used to encrypt the data.
2514 This random key is itself encrypted using a key which is derived
2515 from SoC's non-volatile secret key and a 16 bit Key identifier.
2516 The resulting encrypted key along with encrypted data is called a
2517 blob. The non-volatile secure key is available for use only during
2520 During decapsulation, the reverse process is performed to get back
2524 blob enc - encapsulating data as a cryptgraphic blob
2525 blob dec - decapsulating cryptgraphic blob to get the data
2529 blob enc src dst len km
2531 Encapsulate and create blob of data $len bytes long
2532 at address $src and store the result at address $dst.
2533 $km is the 16 byte key modifier is also required for
2534 generation/use as key for cryptographic operation. Key
2535 modifier should be 16 byte long.
2537 blob dec src dst len km
2539 Decapsulate the blob of data at address $src and
2540 store result of $len byte at addr $dst.
2541 $km is the 16 byte key modifier is also required for
2542 generation/use as key for cryptographic operation. Key
2543 modifier should be 16 byte long.
2546 bool "Support 'hash' command"
2549 This provides a way to hash data in memory using various supported
2550 algorithms (such as SHA1, MD5, CRC32). The computed digest can be
2551 saved to memory or to an environment variable. It is also possible
2552 to verify a hash against data in memory.
2555 bool "Support the 'hvc' command"
2556 depends on ARM_SMCCC
2558 Allows issuing Hypervisor Calls (HVCs). Mostly useful for
2559 development and testing.
2562 bool "Support the 'smc' command"
2563 depends on ARM_SMCCC
2565 Allows issuing Secure Monitor Calls (SMCs). Mostly useful for
2566 development and testing.
2572 Add -v option to verify data against a hash.
2575 bool "scp03 - SCP03 enable and rotate/provision operations"
2578 This command provides access to a Trusted Application
2579 running in a TEE to request Secure Channel Protocol 03
2580 (SCP03) enablement and/or rotation of its SCP03 keys.
2589 bool "Enable the 'tpm' command"
2590 depends on TPM_V1 || TPM_V2
2591 select CMD_TPM_V1 if TPM_V1
2592 select CMD_TPM_V2 if TPM_V2
2594 This provides a means to talk to a TPM from the command line. A wide
2595 range of commands if provided - see 'tpm help' for details. The
2596 command requires a suitable TPM on your board and the correct driver
2602 bool "Enable the 'tpm test' command"
2605 This provides a a series of tests to confirm that the TPMv1.x is
2606 working correctly. The tests cover initialisation, non-volatile RAM,
2607 extend, global lock and checking that timing is within expectations.
2608 The tests pass correctly on Infineon TPMs but may need to be adjusted
2615 menu "Firmware commands"
2617 bool "Enable crosec command"
2621 Enable command-line access to the Chrome OS EC (Embedded
2622 Controller). This provides the 'crosec' command which has
2623 a number of sub-commands for performing EC tasks such as
2624 updating its flash, accessing a small saved context area
2625 and talking to the I2C bus behind the EC (if there is one).
2628 bool "Enable scmi command"
2629 depends on SCMI_FIRMWARE
2631 This command provides user interfaces to several SCMI (System
2632 Control and Management Interface) protocols available on Arm
2633 platforms to manage system resources.
2636 menu "Filesystem commands"
2638 bool "Enable the 'btrsubvol' command"
2641 This enables the 'btrsubvol' command to list subvolumes
2642 of a BTRFS filesystem. There are no special commands for
2643 listing BTRFS directories or loading BTRFS files - this
2644 can be done by the generic 'fs' commands (see CMD_FS_GENERIC)
2645 when BTRFS is enabled (see FS_BTRFS).
2648 bool "Enable the 'cbfs' command"
2651 Define this to enable support for reading from a Coreboot
2652 filesystem. This is a ROM-based filesystem used for accessing files
2653 on systems that use coreboot as the first boot-loader and then load
2654 U-Boot to actually boot the Operating System. Available commands are
2655 cbfsinit, cbfsinfo, cbfsls and cbfsload.
2658 bool "Enable the 'cramfs' command"
2659 depends on FS_CRAMFS
2661 This provides commands for dealing with CRAMFS (Compressed ROM
2662 filesystem). CRAMFS is useful when space is tight since files are
2663 compressed. Two commands are provided:
2665 cramfsls - lists files in a cramfs image
2666 cramfsload - loads a file from a cramfs image
2669 bool "EROFS command support"
2672 Support for the EROFS fs
2675 bool "ext2 command support"
2678 Enables EXT2 FS command
2681 bool "ext4 command support"
2684 Enables EXT4 FS command
2686 config CMD_EXT4_WRITE
2688 bool "ext4 write command support"
2691 Enables EXT4 FS write command
2694 bool "FAT command support"
2697 Support for the FAT fs
2700 bool "SquashFS command support"
2703 Enables SquashFS filesystem commands (e.g. load, ls).
2705 config CMD_FS_GENERIC
2706 bool "filesystem commands"
2708 Enables filesystem commands (e.g. load, ls) that work for multiple
2712 bool "fsuuid command"
2714 Enables fsuuid command for filesystem UUID.
2717 bool "jffs2 command"
2720 Enables commands to support the JFFS2 (Journalling Flash File System
2721 version 2) filesystem. This enables fsload, ls and fsinfo which
2722 provide the ability to load files, list directories and obtain
2723 filesystem information.
2726 string "Default device for JFFS2"
2727 depends on CMD_JFFS2
2730 The default device to use with the jffs2 command.
2732 config JFFS2_PART_OFFSET
2733 hex "Default offset within flash to locate the JFFS2 image"
2734 depends on CMD_JFFS2
2737 The default offset within flash to locate the JFFS2 image.
2739 config JFFS2_PART_SIZE
2740 hex "Default size of JFFS2 partition"
2741 depends on CMD_JFFS2
2744 The default size of the JFFS2 partition
2747 bool "MTD partition support"
2749 select MTD_PARTITIONS
2751 MTD partitioning tool support.
2752 It is strongly encouraged to avoid using this command
2753 anymore along with 'sf', 'nand', 'onenand'. One can still
2754 declare the partitions in the mtdparts environment variable
2755 but better use the MTD stack and the 'mtd' command instead.
2757 config CMD_MTDPARTS_SPREAD
2758 bool "Padd partition size to take account of bad blocks"
2759 depends on CMD_MTDPARTS
2761 This enables the 'spread' sub-command of the mtdparts command.
2762 This command will modify the existing mtdparts variable by increasing
2763 the size of the partitions such that 1) each partition's net size is
2764 at least as large as the size specified in the mtdparts variable and
2765 2) each partition starts on a good block.
2767 config CMD_MTDPARTS_SHOW_NET_SIZES
2768 bool "Show net size (w/o bad blocks) of partitions"
2769 depends on CMD_MTDPARTS
2771 Adds two columns to the printed partition table showing the
2772 effective usable size of a partition, if bad blocks are taken
2775 config MTDIDS_DEFAULT
2776 string "Default MTD IDs"
2777 depends on MTD || SPI_FLASH
2778 depends on !SYS_MTDPARTS_RUNTIME
2780 Defines a default MTD IDs list for use with MTD partitions in the
2781 Linux MTD command line partitions format.
2783 config MTDPARTS_DEFAULT
2784 string "Default MTD partition scheme"
2785 depends on MTD || SPI_FLASH
2786 depends on !SYS_MTDPARTS_RUNTIME
2788 Defines a default MTD partitioning scheme in the Linux MTD command
2789 line partitions format
2792 bool "yaffs2 - Access of YAFFS2 filesystem"
2796 This provides commands for accessing a YAFFS2 filesystem. Yet
2797 Another Flash Filesystem 2 is a filesystem designed specifically
2798 for NAND flash. It incorporates bad-block management and ensures
2799 that device writes are sequential regardless of filesystem
2803 bool "zfs - Access of ZFS filesystem"
2805 This provides commands to accessing a ZFS filesystem, commonly used
2806 on Solaris systems. Two sub-commands are provided:
2808 zfsls - list files in a directory
2809 zfsload - load a file
2811 See doc/README.zfs for more details.
2815 menu "Debug commands"
2817 config CMD_CBSYSINFO
2820 default y if SYS_COREBOOT
2822 This provides information about the coreboot sysinfo table stored in
2823 memory by coreboot before jumping to U-Boot. It can be useful for
2824 debugging the beaaviour of coreboot or U-Boot.
2827 bool "cyclic - Show information about cyclic functions"
2831 This enables the 'cyclic' command which provides information about
2832 cyclic execution functions. This infrastructure allows registering
2833 functions to be executed cyclically, e.g. every 100ms. These commands
2836 cyclic list - list cyclic functions
2837 cyclic cyclic demo <cycletime_ms> <delay_us> - register cyclic
2840 See doc/develop/cyclic.rst for more details.
2843 bool "diag - Board diagnostics"
2845 This command provides access to board diagnostic tests. These are
2846 called Power-on Self Tests (POST). The command allows listing of
2847 available tests and running either all the tests, or specific tests
2851 bool "event - Show information about events"
2853 default y if EVENT_DEBUG
2855 This enables the 'event' command which provides information about
2856 events and event-handler routines. This can help to device event
2860 bool "irq - Show information about interrupts"
2861 depends on !ARM && !MIPS && !RISCV && !SH
2863 This enables two commands:
2865 interrupts - enable or disable interrupts
2866 irqinfo - print device-specific interrupt information
2869 bool "kgdb - Allow debugging of U-Boot with gdb"
2872 This enables a 'kgdb' command which allows gdb to connect to U-Boot
2873 over a serial link for debugging purposes. This allows
2874 single-stepping, inspecting variables, etc. This is supported only
2875 on PowerPC at present.
2878 bool "log - Generation, control and access to logging"
2882 This provides access to logging features. It allows the output of
2883 log data to be controlled to a limited extent (setting up the default
2884 maximum log level for emitting of records). It also provides access
2885 to a command used for testing the log system.
2888 bool "trace - Support tracing of function calls and timing"
2892 Enables a command to control using of function tracing within
2893 U-Boot. This allows recording of call traces including timing
2894 information. The command can write data to memory for exporting
2895 for analysis (e.g. using bootchart). See doc/develop/trace.rst
2899 bool "avb - Android Verified Boot 2.0 operations"
2900 depends on AVB_VERIFY
2902 Enables a "avb" command to perform verification of partitions using
2903 Android Verified Boot 2.0 functionality. It includes such subcommands:
2904 avb init - initialize avb2 subsystem
2905 avb read_rb - read rollback index
2906 avb write_rb - write rollback index
2907 avb is_unlocked - check device lock state
2908 avb get_uuid - read and print uuid of a partition
2909 avb read_part - read data from partition
2910 avb read_part_hex - read data from partition and output to stdout
2911 avb write_part - write data to partition
2912 avb verify - run full verification chain
2914 config CMD_STACKPROTECTOR_TEST
2915 bool "Test command for stack protector"
2916 depends on STACKPROTECTOR
2918 Enable stackprot_test command
2919 The stackprot_test command will force a stack overrun to test
2920 the stack smashing detection mechanisms.
2925 tristate "Enable UBI - Unsorted block images commands"
2928 UBI is a software layer above MTD layer which admits use of LVM-like
2929 logical volumes on top of MTD devices, hides some complexities of
2930 flash chips like wear and bad blocks and provides some other useful
2931 capabilities. Please, consult the MTD web site for more details
2932 (www.linux-mtd.infradead.org). Activate this option if you want
2933 to use U-Boot UBI commands.
2934 It is also strongly encouraged to also enable CONFIG_MTD to get full
2937 config CMD_UBI_RENAME
2938 bool "Enable rename"
2941 Enable a "ubi" command to rename ubi volume:
2942 ubi rename <oldname> <newname>
2945 tristate "Enable UBIFS - Unsorted block images filesystem commands"
2947 default y if CMD_UBI
2951 UBIFS is a file system for flash devices which works on top of UBI.
2953 config MMC_SPEED_MODE_SET
2954 bool "set speed mode using mmc command"
2957 Enable setting speed mode using mmc rescan and mmc dev commands.
2958 The speed mode is provided as the last argument in these commands
2959 and is indicated using the index from enum bus_mode in
2960 include/mmc.h. A speed mode can be set only if it has already
2961 been enabled in the device tree.
2964 bool "Amlogic Meson commands"
2965 depends on ARCH_MESON
2968 Enable useful commands for the Meson Soc family developed by Amlogic Inc.
projects / u-boot.git / blob