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
226 depends on TYPEC_TCPM
228 Show voltage and current negotiated via USB PD as well as the
229 current state of the Type C Port Manager (TCPM) state machine.
231 config CMD_TLV_EEPROM
233 depends on I2C_EEPROM
236 Display and program the system EEPROM data block in ONIE Tlvinfo
237 format. TLV stands for Type-Length-Value.
239 config SPL_CMD_TLV_EEPROM
240 bool "tlv_eeprom for SPL"
241 depends on SPL_I2C_EEPROM
242 select SPL_DRIVERS_MISC
245 Read system EEPROM data block in ONIE Tlvinfo format from SPL.
249 depends on RISCV_SMODE && SBI_V02
251 Display information about the SBI implementation.
257 Display the SMBIOS information.
267 Run the command stored in the environment "bootcmd", i.e.
268 "bootd" does the same thing as "run bootcmd".
274 Boot an application image from the memory.
276 config CMD_BOOTM_PRE_LOAD
277 bool "enable pre-load on bootm"
279 depends on IMAGE_PRE_LOAD
281 Enable support of stage pre-load for the bootm command.
282 This stage allow to check or modify the image provided
283 to the bootm command.
288 default y if BOOTSTD_FULL
290 Support listing available bootdevs (boot devices) which can provide an
291 OS to boot, as well as showing information about a particular one.
293 This command is not necessary for bootstd to work.
300 Support scanning for bootflows available with the bootdevs. The
301 bootflows can optionally be booted.
303 config CMD_BOOTFLOW_FULL
304 bool "bootflow - extract subcommands"
305 depends on BOOTSTD_FULL
308 Add the ability to list the available bootflows, select one and obtain
309 information about it.
311 This command is not necessary for bootstd to work.
316 default y if BOOTSTD_FULL
318 Support listing available bootmeths (methods used to boot an
319 Operating System), as well as selecting the order that the bootmeths
322 This command is not necessary for bootstd to work.
325 bool "Support booting UEFI FIT images"
326 depends on EFI_BINARY_EXEC && CMD_BOOTM && FIT
329 Support booting UEFI FIT images via the bootm command.
332 bool "Support booting ELF images"
333 depends on CMD_BOOTM && LIB_ELF
336 Support booting ELF images via the bootm command.
341 Boot the Linux zImage
345 depends on ARM64 || RISCV || SANDBOX
348 Boot an AArch64 Linux Kernel image from memory.
351 bool "Support booting Linux OS images"
352 depends on CMD_BOOTM || CMD_BOOTZ || CMD_BOOTI
355 Support booting the Linux kernel directly via a command such as bootm
359 bool "Support booting NetBSD (non-EFI) loader images"
363 Support booting NetBSD via the bootm command.
365 config BOOTM_OPENRTOS
366 bool "Support booting OPENRTOS / FreeRTOS images"
369 Support booting OPENRTOS / FreeRTOS via the bootm command.
372 bool "Support booting Enea OSE images"
373 depends on (ARM && (ARM64 || CPU_V7A || CPU_V7R) || SANDBOX || PPC || X86)
376 Support booting Enea OSE images via the bootm command.
379 bool "Support booting Plan9 OS images"
383 Support booting Plan9 images via the bootm command.
386 bool "Support booting RTEMS OS images"
390 Support booting RTEMS images via the bootm command.
393 bool "Support read SEAMA NAND images"
394 depends on MTD_RAW_NAND
396 Support reading NAND Seattle Image (SEAMA) images.
399 bool "upl - Universal Payload Specification"
401 Provides commands to deal with UPL payloads and handoff information.
402 U-Boot supports generating and accepting handoff information. The
403 mkimage tool will eventually support creating payloads.
406 bool "vbe - Verified Boot for Embedded"
407 depends on BOOTMETH_VBE
408 default y if BOOTSTD_FULL
410 Provides various subcommands related to VBE, such as listing the
411 available methods, looking at the state and changing which method
412 is used to boot. Updating the parameters is not currently
416 bool "Support booting VxWorks OS images"
420 Support booting VxWorks images via the bootm command.
424 depends on EFI_LOADER
427 Boot an EFI image from memory.
430 config CMD_BOOTEFI_BINARY
431 bool "Allow booting an EFI binary directly"
432 depends on EFI_BINARY_EXEC
435 Select this option to enable direct execution of binary at 'bootefi'.
436 This subcommand will allow you to load the UEFI binary using
437 other U-Boot commands or external methods and then run it.
439 config CMD_BOOTEFI_BOOTMGR
440 bool "UEFI Boot Manager command"
441 depends on EFI_BOOTMGR
444 Select this option to enable the 'bootmgr' subcommand of 'bootefi'.
445 This subcommand will allow you to select the UEFI binary to be booted
446 via UEFI variables Boot####, BootOrder, and BootNext.
448 config CMD_BOOTEFI_HELLO
449 bool "Allow booting a standard EFI hello world for testing"
450 depends on CMD_BOOTEFI_BINARY && BOOTEFI_HELLO_COMPILE
451 default y if CMD_BOOTEFI_SELFTEST
453 This adds a standard EFI hello world application to U-Boot so that
454 it can be used with the 'bootefi hello' command. This is useful
455 for testing that EFI is working at a basic level, and for bringing
456 up EFI support on a new architecture.
458 source "lib/efi_selftest/Kconfig"
466 Add an ANSI terminal boot menu command.
471 Android DTB/DTBO image manipulation commands. Read dtb/dtbo files from
472 image into RAM, dump image structure information, etc. Those dtb/dtbo
473 files should be merged in one dtb further, which needs to be passed to
474 the kernel, as part of a boot process.
478 depends on ANDROID_BOOT_IMAGE
480 Android Boot Image manipulation commands. Allows one to extract
481 images contained in boot.img, like kernel, ramdisk, dtb, etc, and
482 obtain corresponding meta-information from boot.img.
484 See doc/android/boot-image.rst for details.
487 bool "cedit - Configuration editor"
491 Provides a command to allow editing of board configuration and
492 providing a UI for the user to adjust settings. Subcommands allow
493 loading and saving of configuration as well as showing an editor.
500 Boot an ELF image from memory.
502 config CMD_ELF_BOOTVX
507 Boot a vxWorks image from memory
509 config CMD_ELF_FDT_SETUP
510 bool "Flattened Device Tree setup in bootelf cmd"
514 Do FDT setup in bootelf command optionally by param -d, which
515 allows to bring additional system info (e.g. /memory node) to
516 the Operating System or application.
519 bool "Flattened Device Tree utility commands"
523 Do FDT related setup before booting into the Operating System.
525 config SUPPORT_EXTENSION_SCAN
529 bool "Extension board management command"
531 depends on SUPPORT_EXTENSION_SCAN
533 Enables the "extension" command, which allows to detect
534 extension boards connected to the system, and apply
535 corresponding Device Tree overlays.
541 Start an application at a given address.
547 Run the command in the given environment variable.
553 Print header information for application image.
557 depends on MTD_NOR_FLASH || FLASH_CFI_DRIVER
559 List all images found in flash
565 Extract a part of a multi-image.
568 hex "imxtract max gunzip size"
570 depends on CMD_XIMG && GZIP
572 This provides the size of the commad-line argument area
573 used by imxtract for extracting pieces of FIT image.
574 It should be large enough to fit uncompressed size of
575 FIT piece we are extracting.
578 bool "spl export - Export boot information for Falcon boot"
581 Falcon mode allows booting directly from SPL into an Operating
582 System such as Linux, thus skipping U-Boot proper. See
583 doc/README.falcon for full information about how to use this
586 config CMD_SPL_NAND_OFS
587 hex "Offset of OS args or dtb for Falcon-mode NAND boot"
588 depends on CMD_SPL && (TPL_NAND_SUPPORT || SPL_NAND_SUPPORT)
591 This provides the offset of the command line arguments for Linux
592 when booting from NAND in Falcon mode. See doc/README.falcon
593 for full information about how to use this option (and also see
594 board/gateworks/gw_ventana/README for an example).
596 config CMD_SPL_NOR_OFS
597 hex "Offset of OS args or dtb for Falcon-mode NOR boot"
598 depends on CMD_SPL && SPL_NOR_SUPPORT
601 This provides the offset of the command line arguments or dtb for
602 Linux when booting from NOR in Falcon mode.
604 config CMD_SPL_WRITE_SIZE
605 hex "Size of argument area"
609 This provides the size of the command-line argument area in NAND
610 flash used by Falcon-mode boot. See the documentation until CMD_SPL
613 config CMD_THOR_DOWNLOAD
614 bool "thor - TIZEN 'thor' download"
616 select USB_FUNCTION_THOR
617 depends on USB_GADGET_DOWNLOAD
619 Implements the 'thor' download protocol. This is a way of
620 downloading a software update over USB from an attached host.
621 There is no documentation about this within the U-Boot source code
622 but you should be able to find something on the interwebs.
624 config THOR_RESET_OFF
625 bool "thor: Disable reset on completion"
626 depends on CMD_THOR_DOWNLOAD
629 bool "zboot - x86 boot command"
633 With x86 machines it is common to boot a bzImage file which
634 contains both a kernel and a setup.bin file. The latter includes
635 configuration information from the dark ages which x86 boards still
636 need to pick things out of.
638 Consider using FIT in preference to this since it supports directly
639 booting both 32- and 64-bit kernels, as well as secure boot.
640 Documentation is available in doc/usage/fit/x86-fit-boot.rst.
644 menu "Environment commands"
647 bool "ask for env variable"
649 Ask for environment variable
667 Edit environment variable.
672 Allow for searching environment variables
678 Save all environment variables into the compiled-in persistent
683 depends on CMD_SAVEENV
685 Erase environment variables from the compiled-in persistent
688 config CMD_ENV_EXISTS
692 Check if a variable is defined in the environment for use in
695 config CMD_ENV_CALLBACK
696 bool "env callbacks - print callbacks and their associated variables"
698 Some environment variable have callbacks defined by
699 U_BOOT_ENV_CALLBACK. These are called when the variable changes.
700 For example changing "baudrate" adjust the serial baud rate. This
701 command lists the currently defined callbacks.
704 bool "env flags -print variables that have non-default flags"
706 Some environment variables have special flags that control their
707 behaviour. For example, serial# can only be written once and cannot
708 be deleted. This command shows the variables that have special
711 config CMD_NVEDIT_EFI
712 bool "env [set|print] -e - set/print UEFI variables"
713 depends on EFI_LOADER
716 UEFI variables are encoded as some form of U-Boot variables.
717 If enabled, we are allowed to set/print UEFI variables using
718 "env" command with "-e" option without knowing details.
720 config CMD_NVEDIT_INDIRECT
721 bool "env indirect - Sets environment value from another"
723 config CMD_NVEDIT_INFO
724 bool "env info - print or evaluate environment information"
726 Print environment information:
727 - env_valid : is environment valid
728 - env_ready : is environment imported into hash table
729 - env_use_default : is default environment used
731 This command can be optionally used for evaluation in scripts:
732 [-d] : evaluate whether default environment is used
733 [-p] : evaluate whether environment can be persisted
735 The result of multiple evaluations will be combined with AND.
737 config CMD_NVEDIT_LOAD
740 Load all environment variables from the compiled-in persistent
743 config CMD_NVEDIT_SELECT
746 Select the compiled-in persistent storage of environment variables.
750 menu "Memory commands"
755 Compute binary operations (xor, or, and) of byte arrays of arbitrary
756 size from memory and store the result in memory or the environment.
763 Show information about the bloblist, a collection of binary blobs
764 held in memory that persist between SPL and U-Boot. In the case of
765 x86 devices the bloblist can be used to hold ACPI tables so that they
766 remain available in memory.
779 Add -v option to verify data against a crc32 checksum.
782 bool "eeprom - EEPROM subsystem"
783 depends on DM_I2C || SYS_I2C_LEGACY
785 (deprecated, needs conversion to driver model)
786 Provides commands to read and write EEPROM (Electrically Erasable
787 Programmable Read Only Memory) chips that are connected over an
790 config CMD_EEPROM_LAYOUT
791 bool "Enable layout-aware eeprom commands"
792 depends on CMD_EEPROM
794 (deprecated, needs conversion to driver model)
795 When enabled, additional eeprom sub-commands become available.
797 eeprom print - prints the contents of the eeprom in a human-readable
798 way (eeprom layout fields, and data formatted to be fit for human
801 eeprom update - allows user to update eeprom fields by specifying
802 the field name, and providing the new data in a human readable format
803 (same format as displayed by the eeprom print command).
805 Both commands can either auto detect the layout, or be told which
809 __weak int parse_layout_version(char *str)
810 - override to provide your own layout name parsing
811 __weak void __eeprom_layout_assign(struct eeprom_layout *layout,
813 - override to setup the layout metadata based on the version
814 __weak int eeprom_layout_detect(unsigned char *data)
815 - override to provide your own algorithm for detecting layout
818 - contains various printing and updating functions for common
819 types of eeprom fields. Can be used for defining
822 config EEPROM_LAYOUT_VERSIONS
823 bool "Support specifying eeprom layout version"
824 depends on CMD_EEPROM_LAYOUT
826 Support specifying eeprom layout version in the 'eeprom' command
829 config EEPROM_LAYOUT_HELP_STRING
830 string "Tells user what layout names are supported"
831 depends on EEPROM_LAYOUT_VERSIONS
832 default "<not defined>"
834 Help printed with the LAYOUT VERSIONS part of the 'eeprom'
837 config SYS_I2C_EEPROM_BUS
838 int "I2C bus of the EEPROM device."
839 depends on CMD_EEPROM
842 config SYS_I2C_EEPROM_ADDR_LEN
843 int "Length in bytes of the EEPROM memory array address"
844 depends on CMD_EEPROM || ID_EEPROM
848 Note: This is NOT the chip address length!
850 config SYS_EEPROM_SIZE
851 depends on CMD_EEPROM
852 int "Size in bytes of the EEPROM device"
855 config SYS_EEPROM_PAGE_WRITE_BITS
856 int "Number of bits used to address bytes in a single page"
857 depends on CMD_EEPROM || ENV_IS_IN_EEPROM
860 The EEPROM page size is 2^SYS_EEPROM_PAGE_WRITE_BITS.
861 A 64 byte page, for example would require six bits.
863 config SYS_EEPROM_PAGE_WRITE_DELAY_MS
864 int "Number of milliseconds to delay between page writes"
865 depends on CMD_EEPROM || CMD_I2C
871 Infinite write loop on address range
878 Compute MD5 checksum.
882 depends on CMD_MD5SUM
884 Add -v option to verify data against an MD5 checksum.
889 Display memory information.
892 bool "md, mm, nm, mw, cp, cmp, base, loop"
897 mm - memory modify (auto-incrementing address)
898 nm - memory modify (constant address)
899 mw - memory write (fill)
902 base - print or set address offset
903 loop - initialize loop on address range
905 config CMD_MEM_SEARCH
906 bool "ms - Memory search"
908 Memory-search command
910 This allows searching through a region of memory looking for hex
911 data (byte, 16-bit word, 32-bit long, also 64-bit on machines that
912 support it). It is also possible to search for a string. The
913 command accepts a memory range and a list of values to search for.
914 The values need to appear in memory in the same order they are given
915 in the command. At most 10 matches can be returned at a time, but
916 pressing return will show the next 10 matches. Environment variables
917 are set for use with scripting (memmatches, memaddr, mempos).
920 bool "Enable cyclic md/mw commands"
921 depends on CMD_MEMORY
923 Add the "mdc" and "mwc" memory commands. These are cyclic
928 This command will print 4 bytes (10,11,12,13) each 500 ms.
930 => mwc.l 100 12345678 10
931 This command will write 12345678 to address 100 all 10 ms.
936 depends on CMD_MEMORY && (LIB_RAND || LIB_HW_RAND)
938 random - fill memory with random data
943 Simple RAM read/write test.
947 config SYS_ALT_MEMTEST
948 bool "Alternative test"
950 Use a more complete alternative memory test.
954 config SYS_ALT_MEMTEST_BITFLIP
958 The alternative memory test includes bitflip test since 2020.07.
959 The bitflip test significantly increases the overall test time.
960 Bitflip test can optionally be disabled here.
964 config SYS_MEMTEST_START
965 hex "default start address for mtest"
968 This is the default start address for mtest for simple read/write
969 test. If no arguments are given to mtest, default address is used
972 config SYS_MEMTEST_END
973 hex "default end address for mtest"
976 This is the default end address for mtest for simple read/write
977 test. If no arguments are given to mtest, default address is used
986 Compute SHA1 checksum.
988 config SHA1SUM_VERIFY
990 depends on CMD_SHA1SUM
992 Add -v option to verify data against a SHA1 checksum.
995 bool "strings - display strings in memory"
997 This works similarly to the Unix 'strings' command except that it
998 works with a memory range. String of printable characters found
999 within the range are displayed. The minimum number of characters
1000 for a sequence to be considered a string can be provided.
1004 menu "Compression commands"
1008 default y if CMD_BOOTI
1011 Support decompressing an LZMA (Lempel-Ziv-Markov chain algorithm)
1016 default y if CMD_BOOTI
1019 Support decompressing an LZ4 image from memory region.
1023 default y if CMD_BOOTI
1026 Uncompress a zip-compressed memory region.
1030 select GZIP_COMPRESSED
1032 Compress a memory region with zlib deflate method.
1036 menu "Device access commands"
1039 bool "Arm FF-A test command"
1040 depends on ARM_FFA_TRANSPORT
1042 Provides a test command for the FF-A support
1044 - Listing the partition(s) info
1045 - Sending a data pattern to the specified partition
1046 - Displaying the arm_ffa device info
1050 depends on FLASH_CFI_DRIVER
1052 ARM Ltd reference designs flash partition access
1055 bool "adc - Access Analog to Digital Converters info and data"
1057 depends on DM_REGULATOR
1059 Shows ADC device info and permit printing one-shot analog converted
1060 data from a named Analog to Digital Converter.
1064 depends on PARTITIONS
1066 Read/modify/write the fields of Bootloader Control Block, usually
1067 stored on the flash "misc" partition with its structure defined in:
1068 https://android.googlesource.com/platform/bootable/recovery/+/master/
1069 bootloader_message/include/bootloader_message/bootloader_message.h
1071 Some real-life use-cases include (but are not limited to):
1072 - Determine the "boot reason" (and act accordingly):
1073 https://source.android.com/devices/bootloader/boot-reason
1074 - Get/pass a list of commands from/to recovery:
1075 https://android.googlesource.com/platform/bootable/recovery
1076 - Inspect/dump the contents of the BCB fields
1079 bool "bind/unbind - Bind or unbind a device to/from a driver"
1083 Bind or unbind a device to/from a driver from the command line.
1084 This is useful in situations where a device may be handled by several
1085 drivers. For example, this can be used to bind a UDC to the usb ether
1086 gadget driver from the command line.
1089 bool "clk - Show and set clock frequencies"
1092 Show and set clock frequencies managed by CLK uclass drivers.
1095 bool "demo - Demonstration commands for driver model"
1098 Provides a 'demo' command which can be used to play around with
1099 driver model. To use this properly you will need to enable one or
1100 both of the demo devices (DM_DEMO_SHAPE and DM_DEMO_SIMPLE).
1101 Otherwise you will always get an empty list of devices. The demo
1102 devices are defined in the sandbox device tree, so the easiest
1103 option is to use sandbox and pass the -d point to sandbox's
1110 Enables the command "dfu" which is used to have U-Boot create a DFU
1111 class device via USB. This command requires that the "dfu_alt_info"
1112 environment variable be set and define the alt settings to expose to
1116 bool "dm - Access to driver model information"
1119 Provides access to driver model data structures and information,
1120 such as a list of devices, list of uclasses and the state of each
1121 device (e.g. activated). This is not required for operation, but
1122 can be useful to see the state of driver model for debugging or
1126 bool "fastboot - Android fastboot support"
1129 This enables the command "fastboot" which enables the Android
1130 fastboot mode for the platform. Fastboot is a protocol for
1131 downloading images, flashing and device control used on
1132 Android devices. Fastboot requires either the network stack
1133 enabled or support for acting as a USB device.
1135 See doc/android/fastboot.rst for more information.
1138 bool "flinfo, erase, protect"
1140 depends on FLASH_CFI_DRIVER || MTD_NOR_FLASH
1143 flinfo - print FLASH memory information
1144 erase - FLASH memory
1145 protect - enable or disable FLASH write protection
1154 config CMD_FPGA_LOADBP
1155 bool "fpga loadbp - load partial bitstream (Xilinx only)"
1158 Supports loading an FPGA device from a bitstream buffer containing
1159 a partial bitstream.
1161 config CMD_FPGA_LOADFS
1162 bool "fpga loadfs - load bitstream from FAT filesystem (Xilinx only)"
1165 Supports loading an FPGA device from a FAT filesystem.
1167 config CMD_FPGA_LOADMK
1168 bool "fpga loadmk - load bitstream from image"
1171 Supports loading an FPGA device from a image generated by mkimage.
1173 config CMD_FPGA_LOADP
1174 bool "fpga loadp - load partial bitstream"
1177 Supports loading an FPGA device from a bitstream buffer containing
1178 a partial bitstream.
1180 config CMD_FPGA_LOAD_SECURE
1181 bool "fpga loads - loads secure bitstreams"
1183 select FPGA_LOAD_SECURE
1185 Enables the fpga loads command which is used to load secure
1186 (authenticated or encrypted or both) bitstreams on to FPGA.
1189 bool "fpgad - dump FPGA registers"
1190 depends on GDSYS_LEGACY_DRIVERS
1192 (legacy, needs conversion to driver model)
1193 Provides a way to dump FPGA registers by calling the board-specific
1194 fpga_get_reg() function. This functions similarly to the 'md'
1198 bool "fuse - support for the fuse subssystem"
1200 (deprecated - needs conversion to driver model)
1201 This allows reading, sensing, programming or overriding fuses
1202 which control the behaviour of the device. The command uses the
1210 config CMD_GPIO_READ
1211 bool "gpio read - save GPIO value to variable"
1214 Enables the 'gpio read' command that saves the value
1215 of a GPIO pin to a variable.
1221 Control PWM channels, this allows invert/config/enable/disable PWM channels.
1224 bool "GPT (GUID Partition Table) command"
1225 select EFI_PARTITION
1226 select PARTITION_UUIDS
1229 Enable the 'gpt' command to ready and write GPT style partition
1232 config CMD_GPT_RENAME
1233 bool "GPT partition renaming commands"
1236 Enables the 'gpt' command to interchange names on two GPT
1237 partitions via the 'gpt swap' command or to rename single
1238 partitions via the 'rename' command.
1241 bool "ide - Support for IDE drivers"
1244 Provides an 'ide' command which allows accessing the IDE drive,
1245 resetting the IDE interface, printing the partition table and
1246 geting device info. It also enables the 'diskboot' command which
1247 permits booting from an IDE drive.
1250 bool "io - Support for performing I/O accesses"
1252 Provides an 'iod' command to display I/O space and an 'iow' command
1253 to write values to the I/O space. This can be useful for manually
1254 checking the state of devices during boot when debugging device
1258 bool "iotrace - Support for tracing I/O activity"
1260 Provides an 'iotrace' command which supports recording I/O reads and
1261 writes in a trace buffer in memory . It also maintains a checksum
1262 of the trace records (even if space is exhausted) so that the
1263 sequence of I/O accesses can be verified.
1265 When debugging drivers it is useful to see what I/O accesses were
1266 done and in what order.
1268 Even if the individual accesses are of little interest it can be
1269 useful to verify that the access pattern is consistent each time
1270 an operation is performed. In this case a checksum can be used to
1271 characterise the operation of a driver. The checksum can be compared
1272 across different runs of the operation to verify that the driver is
1275 In particular, when performing major refactoring of the driver, where
1276 the access pattern should not change, the checksum provides assurance
1277 that the refactoring work has not broken the driver.
1279 This works by sneaking into the io.h heder for an architecture and
1280 redirecting I/O accesses through iotrace's tracing mechanism.
1282 For now no commands are provided to examine the trace buffer. The
1283 format is fairly simple, so 'md' is a reasonable substitute.
1285 Note: The checksum feature is only useful for I/O regions where the
1286 contents do not change outside of software control. Where this is not
1287 suitable you can fall back to manually comparing the addresses. It
1288 might be useful to enhance tracing to only checksum the accesses and
1289 not the data read/written.
1299 bool "w1 - Support for Dallas 1-Wire protocol"
1301 Dallas 1-wire protocol support
1307 Load a binary file over serial line.
1312 Load a binary over memory mapped.
1315 bool "loads - Load a file over serial in S-Record format"
1318 Load an S-Record file over serial line
1321 bool "Echo all characters received during a loads back to console"
1322 depends on CMD_LOADS
1324 If enabled, all characters received during a serial download (using
1325 the "loads" command) are echoed back. This might be needed by some
1326 terminal emulations (like "cu"), but may as well just take time on
1327 others. This sets the initial value of the "loads_echo" environment
1331 bool "saves - Save a file over serial in S-Record format"
1332 depends on CMD_LOADS
1334 Provides a way to save a binary file using the Motorola S-Record
1335 format over the serial line.
1337 config SYS_LOADS_BAUD_CHANGE
1338 bool "Enable a temporary baudrate change during loads/saves command"
1339 depends on CMD_LOADS || CMD_SAVES
1341 config CMD_LOADXY_TIMEOUT
1342 int "loadxy_timeout"
1346 Initial timeout for loadx and loady commands. Zero means infinity.
1350 bool "lsblk - list block drivers and devices"
1352 Print list of available block device drivers, and for each, the list
1353 of known block devices.
1356 bool "MBR (Master Boot Record) command"
1357 select DOS_PARTITION
1359 Enable the 'mbr' command to ready and write MBR (Master Boot Record)
1360 style partition tables.
1366 Enable the command "misc" for accessing miscellaneous devices with
1367 a MISC uclass driver. The command provides listing all MISC devices
1368 as well as read and write functionalities via their drivers.
1374 MMC memory mapped support.
1378 config CMD_BKOPS_ENABLE
1379 bool "mmc bkops enable"
1382 Enable command for setting manual background operations handshake
1383 on a eMMC device. The feature is optionally available on eMMC devices
1384 conforming to standard >= 4.41.
1387 bool "Enable support for reading card registers in the mmc command"
1390 Enable the commands for reading card registers. This is useful
1391 mostly for debugging or extracting details from the card.
1394 bool "Enable support for RPMB in the mmc command"
1395 depends on SUPPORT_EMMC_RPMB
1397 Enable the commands for reading, writing and programming the
1398 key for the Replay Protection Memory Block partition in eMMC.
1400 config CMD_MMC_SWRITE
1402 depends on MMC_WRITE
1405 Enable support for the "mmc swrite" command to write Android sparse
1408 config MMC_SPEED_MODE_SET
1409 bool "set speed mode using mmc command"
1411 Enable setting speed mode using mmc rescan and mmc dev commands.
1412 The speed mode is provided as the last argument in these commands
1413 and is indicated using the index from enum bus_mode in
1414 include/mmc.h. A speed mode can be set only if it has already
1415 been enabled in the device tree.
1423 Enable storage cloning over block devices, useful for
1424 initial flashing by external block device without network
1427 config CMD_OPTEE_RPMB
1428 bool "Enable read/write support on RPMB via OPTEE"
1429 depends on (SUPPORT_EMMC_RPMB && OPTEE) || SANDBOX_TEE
1430 default y if SANDBOX_TEE
1431 select OPTEE_TA_AVB if SANDBOX_TEE
1433 Enable the commands for reading, writing persistent named values
1434 in the Replay Protection Memory Block partition in eMMC by
1435 using Persistent Objects in OPTEE
1440 select MTD_PARTITIONS
1442 MTD commands support.
1449 MTD commands for OTP access.
1453 depends on MULTIPLEXER
1455 List, select, and deselect mux controllers on the fly.
1459 default y if NAND_SUNXI
1460 depends on MTD_RAW_NAND
1465 config CMD_NAND_TRIMFFS
1466 bool "nand write.trimffs"
1467 default y if ARCH_SUNXI
1469 Allows one to skip empty pages when flashing something on a NAND.
1471 config CMD_NAND_LOCK_UNLOCK
1472 bool "nand lock/unlock"
1474 NAND locking support.
1476 config CMD_NAND_TORTURE
1479 NAND torture support.
1488 NVM Express device support
1491 bool "onenand - access to onenand device"
1494 OneNAND is a brand of NAND ('Not AND' gate) flash which provides
1495 various useful features. This command allows reading, writing,
1496 and erasing blocks. It allso provides a way to show and change
1497 bad blocks, and test the device.
1499 config USE_ONENAND_BOARD_INIT
1500 bool "Call onenand_board_init() in the onenand command"
1501 depends on CMD_ONENAND
1507 Enable the 'osd' command which allows to query information from and
1508 write text data to a on-screen display (OSD) device; a virtual device
1509 associated with a display capable of displaying a text overlay on the
1510 display it's associated with..
1514 depends on PARTITIONS
1515 select PARTITION_UUIDS
1517 Read and display information about the partition table on
1521 bool "pci - Access PCI devices"
1523 Provide access to PCI (Peripheral Interconnect Bus), a type of bus
1524 used on some devices to allow the CPU to communicate with its
1525 peripherals. Sub-commands allow bus enumeration, displaying and
1526 changing configuration space and a few other features.
1529 bool "pci_mps - Configure PCI device MPS"
1532 Enables PCI Express Maximum Packet Size (MPS) tuning. This
1533 command configures the PCI Express MPS of each endpoint to the
1534 largest value supported by all devices below the root complex.
1535 The Maximum Read Request Size will not be altered. This method is
1536 the same algorithm as used by Linux pci=pcie_bus_safe.
1539 bool "pinmux - show pins muxing"
1541 default y if PINCTRL
1543 Parse all available pin-controllers and show pins muxing. This
1544 is useful for debug purpoer to check the pin muxing and to know if
1545 a pin is configured as a GPIO or as an alternate function.
1550 Poweroff/Shutdown the system
1553 bool "read - Read binary data from a partition"
1555 Provides low-level access to the data in a partition.
1557 config CMD_REMOTEPROC
1559 depends on REMOTEPROC
1561 Support for Remote Processor control
1564 bool "sata - Access SATA subsystem"
1567 SATA (Serial Advanced Technology Attachment) is a serial bus
1568 standard for connecting to hard drives and other storage devices.
1569 This command provides information about attached devices and allows
1570 reading, writing and other operations.
1572 SATA replaces PATA (originally just ATA), which stands for Parallel AT
1573 Attachment, where AT refers to an IBM AT (Advanced Technology)
1574 computer released in 1984.
1577 bool "scsi - Access to SCSI devices"
1581 This provides a 'scsi' command which provides access to SCSI (Small
1582 Computer System Interface) devices. The command provides a way to
1583 scan the bus, reset the bus, read and write data and get information
1587 bool "sdram - Print SDRAM configuration information"
1589 Provides information about attached SDRAM. This assumed that the
1590 SDRAM has an EEPROM with information that can be read using the
1591 I2C bus. This is only available on some boards.
1595 depends on DM_SPI_FLASH || SPI_FLASH
1596 default y if DM_SPI_FLASH
1601 bool "sf test - Allow testing of SPI flash"
1604 Provides a way to test that SPI flash is working correctly. The
1605 test is destructive, in that an area of SPI flash must be provided
1606 for the test to use. Performance information is also provided,
1607 measuring the performance of reading, writing and erasing in
1608 Mbps (Million Bits Per Second). This value should approximately
1609 equal the SPI bus speed for a single-bit-wide SPI bus, assuming
1610 everything is working properly.
1613 bool "sspi - Command to access spi device"
1616 SPI utility command.
1618 config DEFAULT_SPI_BUS
1619 int "default spi bus used by sspi command"
1623 config DEFAULT_SPI_MODE
1624 hex "default spi mode used by sspi command (see include/spi.h)"
1628 config CMD_TEMPERATURE
1629 bool "temperature - display the temperature from thermal sensors"
1630 depends on DM_THERMAL
1632 Provides a way to list thermal sensors and to get their readings.
1635 bool "tsi148 - Command to access tsi148 device"
1636 depends on DM_PCI_COMPAT
1638 This provides various sub-commands to initialise and configure the
1639 Turndra tsi148 device. See the command help for full details.
1642 bool "ufs - Universal Flash Storage commands"
1645 "This provides commands to initialise and configure universal flash
1649 bool "universe - Command to set up the Turndra Universe controller"
1650 depends on DM_PCI_COMPAT
1652 This allows setting up the VMEbus provided by this controller.
1653 See the command help for full details.
1663 depends on USB_GADGET_DOWNLOAD
1664 select USB_FUNCTION_SDP
1666 Enables the command "sdp" which is used to have U-Boot emulating the
1667 Serial Download Protocol (SDP) via USB.
1673 Enable the command "rkmtd" to create a virtual block device to transfer
1674 Rockchip boot block data to and from NAND with block orientated tools
1675 like "ums" and "rockusb".
1679 depends on USB_FUNCTION_ROCKUSB
1681 Rockusb protocol is widely used by Rockchip SoC based devices. It can
1682 read/write info, image to/from devices. This enable rockusb command
1683 support to communication with rockusb device. for more detail about
1684 this command, please read doc/README.rockusb.
1686 config CMD_USB_MASS_STORAGE
1687 bool "UMS usb mass storage"
1688 depends on BLK && USB_GADGET_DOWNLOAD
1689 select USB_FUNCTION_MASS_STORAGE
1691 Enables the command "ums" and the USB mass storage support to the
1692 export a block device: U-Boot, the USB device, acts as a simple
1693 external hard drive plugged on the host USB port.
1695 config CMD_UMS_ABORT_KEYED
1696 bool "UMS abort with any key"
1697 depends on CMD_USB_MASS_STORAGE
1699 Allow interruption of usb mass storage run with any key pressed.
1702 bool "Xen para-virtualized block device"
1706 Xen para-virtualized block device support
1713 VirtIO block device support
1719 This provides commands to control the watchdog timer devices.
1722 bool "write - Write binary data to a partition"
1724 Provides low-level write access to a partition.
1730 Enable the command "axi" for accessing AXI (Advanced eXtensible
1731 Interface) busses, a on-chip interconnect specification for managing
1732 functional blocks in SoC designs, which is also often used in designs
1733 involving FPGAs (e.g. communication with IP cores in Xilinx FPGAs).
1737 menu "Shell scripting commands"
1742 Print file to standard output
1748 Echo args to console
1754 Return true/false on integer compare.
1760 Run script from memory
1766 Evaluate boolean and math expressions and store the result in an env
1768 Also supports loading the value at a memory location into a variable.
1769 If CONFIG_REGEX is enabled, setexpr also supports a gsub function.
1771 config CMD_SETEXPR_FMT
1773 depends on CMD_SETEXPR
1775 Evaluate format string expression and store result in an environment
1781 Print file as hexdump to standard output
1785 menu "Android support commands"
1787 config CMD_AB_SELECT
1789 depends on ANDROID_AB
1791 On Android devices with more than one boot slot (multiple copies of
1792 the kernel and system images) this provides a command to select which
1793 slot should be used to boot from and register the boot attempt. This
1794 is used by the new A/B update model where one slot is updated in the
1795 background while running from the other slot.
1802 bool "Network commands"
1815 bootp - boot image via network using BOOTP/TFTP protocol
1821 Boot image via network using DHCPv6/TFTP protocol using IPv6.
1823 Will perform 4-message exchange with DHCPv6 server, requesting
1824 the minimum required options to TFTP boot. Complies with RFC 8415.
1828 config DHCP6_PXE_CLIENTARCH
1830 default 0x16 if ARM64
1834 config DHCP6_PXE_DHCP_OPTION
1835 bool "Request & store 'pxe_configfile' from DHCP6 server"
1837 config DHCP6_ENTERPRISE_ID
1838 int "Enterprise ID to send in DHCPv6 Vendor Class Option"
1843 config BOOTP_MAY_FAIL
1844 bool "Allow for the BOOTP/DHCP server to not be found"
1845 depends on CMD_BOOTP
1847 If the DHCP server is not found after the configured retry count, the
1848 call will fail instead of starting over. This can be used to fail
1849 over to Link-local IP address configuration if the DHCP server is not
1852 config BOOTP_BOOTPATH
1853 bool "Request & store 'rootpath' from BOOTP/DHCP server"
1855 depends on CMD_BOOTP
1857 Even though the config is called BOOTP_BOOTPATH, it stores the
1858 path in the variable 'rootpath'.
1860 config BOOTP_VENDOREX
1861 bool "Support vendor extensions from BOOTP/DHCP server"
1862 depends on CMD_BOOTP
1864 config BOOTP_BOOTFILESIZE
1865 bool "Request & store 'bootfilesize' from BOOTP/DHCP server"
1866 depends on CMD_BOOTP
1869 bool "Request & store 'dnsip' from BOOTP/DHCP server"
1871 depends on CMD_BOOTP
1873 The primary DNS server is stored as 'dnsip'. If two servers are
1874 returned, you must set BOOTP_DNS2 to store that second server IP
1878 bool "Store 'dnsip2' from BOOTP/DHCP server"
1879 depends on BOOTP_DNS
1881 If a DHCP client requests the DNS server IP from a DHCP server,
1882 it is possible that more than one DNS serverip is offered to the
1883 client. If CONFIG_BOOTP_DNS2 is enabled, the secondary DNS
1884 server IP will be stored in the additional environment
1885 variable "dnsip2". The first DNS serverip is always
1886 stored in the variable "dnsip", when BOOTP_DNS is defined.
1888 config BOOTP_GATEWAY
1889 bool "Request & store 'gatewayip' from BOOTP/DHCP server"
1891 depends on CMD_BOOTP
1893 config BOOTP_HOSTNAME
1894 bool "Request & store 'hostname' from BOOTP/DHCP server"
1896 depends on CMD_BOOTP
1898 The name may or may not be qualified with the local domain name.
1900 config BOOTP_PREFER_SERVERIP
1901 bool "serverip variable takes precedent over DHCP server IP."
1902 depends on CMD_BOOTP
1904 By default a BOOTP/DHCP reply will overwrite the 'serverip' variable.
1906 With this option enabled, the 'serverip' variable in the environment
1907 takes precedence over DHCP server IP and will only be set by the DHCP
1908 server if not already set in the environment.
1910 config BOOTP_SUBNETMASK
1911 bool "Request & store 'netmask' from BOOTP/DHCP server"
1913 depends on CMD_BOOTP
1915 config BOOTP_NISDOMAIN
1916 bool "Request & store 'nisdomain' from BOOTP/DHCP server"
1917 depends on CMD_BOOTP
1919 config BOOTP_NTPSERVER
1920 bool "Request & store 'ntpserverip' from BOOTP/DHCP server"
1921 depends on CMD_BOOTP
1923 config BOOTP_TIMEOFFSET
1924 bool "Request & store 'timeoffset' from BOOTP/DHCP server"
1925 depends on CMD_BOOTP && CMD_SNTP
1930 Selecting this will allow capturing all Ethernet packets and store
1931 them in physical memory in a PCAP formated file,
1932 later to be analyzed by PCAP reader application (IE. WireShark).
1935 bool "Send PXE client arch to BOOTP/DHCP server"
1937 depends on CMD_BOOTP && CMD_PXE
1939 Supported for ARM, ARM64, and x86 for now.
1941 config BOOTP_PXE_CLIENTARCH
1943 depends on BOOTP_PXE
1944 default 0x16 if ARM64
1948 config BOOTP_PXE_DHCP_OPTION
1949 bool "Request & store 'pxe_configfile' from BOOTP/DHCP server"
1950 depends on BOOTP_PXE
1952 config BOOTP_VCI_STRING
1954 depends on CMD_BOOTP
1955 default "U-Boot.armv7" if CPU_V7A || CPU_V7M || CPU_V7R
1956 default "U-Boot.armv8" if ARM64
1957 default "U-Boot.arm" if ARM
1962 depends on CMD_TFTPBOOT
1964 TFTP put command, for uploading files to a server
1968 depends on CMD_TFTPBOOT
1970 Act as a TFTP server and boot the first received file
1972 config NET_TFTP_VARS
1973 bool "Control TFTP timeout and count through environment"
1974 depends on CMD_TFTPBOOT
1977 If set, allows controlling the TFTP timeout through the
1978 environment variable tftptimeout, and the TFTP maximum
1979 timeout count through the variable tftptimeoutcountmax.
1980 If unset, timeout and maximum are hard-defined as 1 second
1981 and 10 timouts per TFTP transfer.
1986 Boot image via network using RARP/TFTP protocol
1991 Boot image via network using NFS protocol.
1994 int "Timeout in milliseconds for NFS mounts"
1998 Timeout in milliseconds used in NFS protocol. If you encounter
1999 "ERROR: Cannot umount" in nfs command, try longer timeout such as
2002 config SYS_DISABLE_AUTOLOAD
2003 bool "Disable automatically loading files over the network"
2004 depends on CMD_BOOTP || CMD_DHCP || CMD_NFS || CMD_RARP
2006 Typically, commands such as "dhcp" will attempt to automatically
2007 load a file from the network, once the initial network configuration
2008 is complete. Enable this option to disable this behavior and instead
2009 require files to be loaded over the network by subsequent commands.
2014 default y if (CMD_PING && IPV6)
2016 Send ICMPv6 ECHO_REQUEST to network host
2021 Perform CDP network configuration
2027 Synchronize RTC via network
2029 config CMD_LINK_LOCAL
2033 Acquire a network IP address using the link-local protocol
2039 Manually configure the attached NIC via NC-SI.
2040 Normally this happens automatically before other network
2043 config IPV6_ROUTER_DISCOVERY
2044 bool "Do IPv6 router discovery"
2047 Will automatically perform router solicitation on first IPv6
2054 Allow control of L2 Ethernet switch commands. These are supported
2055 by the vsc9953 Ethernet driver at present. Sub-commands allow
2056 operations such as enabling / disabling a port and
2057 viewing/maintaining the filtering database (FDB)
2062 Wait for wake-on-lan Magic Packet
2072 select PROT_DHCP_LWIP if NET_LWIP
2074 Boot image via network using DHCP/TFTP protocol
2078 select PROT_DNS_LWIP if NET_LWIP
2080 Lookup the IP of a hostname
2086 If set, allows 802.3(clause 22) MII Management functions interface access
2087 The management interface specified in Clause 22 provides
2088 a simple, two signal, serial interface to connect a
2089 Station Management entity and a managed PHY for providing access
2090 to management parameters and services.
2091 The interface is referred to as the MII management interface.
2094 bool "Call mii_init() in the mii command"
2095 depends on CMD_MII && (MPC8XX_FEC || FSLDMAFE || MCFFEC)
2101 If set, allows Enable 802.3(clause 45) MDIO interface registers access
2102 The MDIO interface is orthogonal to the MII interface and extends
2103 it by adding access to more registers through indirect addressing.
2107 select PROT_RAW_LWIP if NET_LWIP
2109 Send ICMP ECHO_REQUEST to network host
2113 select PROT_UDP_LWIP if NET_LWIP
2116 tftpboot - load file via network using TFTP protocol
2120 default y if SANDBOX
2121 select PROT_TCP if NET
2122 select PROT_TCP_LWIP if NET_LWIP
2123 select PROT_DNS_LWIP if NET_LWIP
2125 wget is a simple command to download kernel, or other files,
2126 from a http server over TCP.
2135 Boot image via network using PXE protocol
2137 endif # if NET || NET_LWIP
2139 menu "Misc commands"
2144 This is a simple sliding block puzzle game designed by Italian web
2145 developer Gabriele Cirulli. The game's objective is to slide numbered
2146 tiles on a grid to combine them to create a tile with the number
2149 This needs ANSI support on your terminal to work. It is not fully
2150 functional on a video device.
2153 bool "Enable 'bmp' command"
2157 This provides a way to obtain information about a BMP-format image
2158 and to display it. BMP (which presumably stands for BitMaP) is a
2159 file format defined by Microsoft which supports images of various
2160 depths, formats and compression methods. Headers on the file
2161 determine the formats used. This command can be used by first loading
2162 the image into RAM, then using this command to look at it or display
2165 config CMD_BOOTCOUNT
2167 depends on BOOTCOUNT_LIMIT
2169 Enable the bootcount command, which allows interrogation and
2170 reset of the bootcounter.
2173 bool "Enable board-specific commands"
2175 (deprecated: instead, please define a Kconfig option for each command)
2177 Some boards have board-specific commands which are only enabled
2178 during developemnt and need to be turned off for production. This
2179 option provides a way to control this. The commands that are enabled
2180 vary depending on the board.
2182 config CMD_BLOCK_CACHE
2183 bool "blkcache - control and stats for block cache"
2184 depends on BLOCK_CACHE
2185 default y if BLOCK_CACHE
2187 Enable the blkcache command, which can be used to control the
2188 operation of the cache functions.
2189 This is most useful when fine-tuning the operation of the cache
2190 during development, but also allows the cache to be disabled when
2191 it might hurt performance (e.g. when using the ums command).
2194 bool "blkmap - Composable virtual block devices"
2198 Create virtual block devices that are backed by various sources,
2199 e.g. RAM, or parts of an existing block device. Though much more
2200 rudimentary, it borrows a lot of ideas from Linux's device mapper
2204 - Treat a region of RAM as a block device, i.e. a RAM disk. This let's
2205 you extract files from filesystem images stored in RAM (perhaps as a
2206 result of a TFTP transfer).
2207 - Create a virtual partition on an existing device. This let's you
2208 access filesystems that aren't stored at an exact partition
2209 boundary. A common example is a filesystem image embedded in an FIT
2217 Enable the 'button' command which allows to get the status of
2218 buttons supported by the board. The buttonss can be listed with
2219 'button list' and state can be known with 'button <label>'.
2220 Any button drivers can be controlled with this command, e.g.
2224 bool "icache or dcache"
2226 Enable the "icache" and "dcache" commands
2228 config CMD_CONITRACE
2229 bool "conitrace - trace console input codes"
2231 Enable the 'conitrace' command which displays the codes received
2232 from the console input as hexadecimal numbers.
2235 bool "Enable clear screen command 'cls'"
2236 default y if LCD || VIDEO
2238 Enable the 'cls' command which clears the screen contents
2239 on video frame buffer.
2242 bool "efidebug - display/configure UEFI environment"
2243 depends on EFI_LOADER
2244 select EFI_DEVICE_PATH_TO_TEXT
2246 Enable the 'efidebug' command which provides a subset of UEFI
2247 shell utility with simplified functionality. It will be useful
2248 particularly for managing boot parameters as well as examining
2249 various EFI status for debugging.
2251 config CMD_EFICONFIG
2252 bool "eficonfig - provide menu-driven uefi variables maintenance interface"
2253 default y if !HAS_BOARD_SIZE_LIMIT
2254 depends on EFI_BOOTMGR
2257 Enable the 'eficonfig' command which provides the menu-driven UEFI
2258 variable maintenance interface.
2260 config CMD_EXCEPTION
2261 bool "exception - raise exception"
2262 depends on ARM || RISCV || SANDBOX || X86
2264 Enable the 'exception' command which allows to raise an exception.
2271 Enable the 'led' command which allows for control of LEDs supported
2272 by the board. The LEDs can be listed with 'led list' and controlled
2273 with led on/off/togle/blink. Any LED drivers can be controlled with
2274 this command, e.g. led_gpio.
2279 Enable the 'ini' command which allows a .ini file to be parsed and
2280 placed into environment variables. Please check the source code for
2281 this as there is no documentation.
2288 Enable the 'date' command for getting/setting the time/date in RTC
2295 Enable the 'rtc' command for low-level access to RTC devices.
2300 Run commands and summarize execution time.
2303 bool "gettime - read elapsed time"
2305 Enable the 'gettime' command which reads the elapsed time since
2306 U-Boot started running. This shows the time in seconds and
2307 milliseconds. See also the 'bootstage' command which provides more
2308 flexibility for boot timing.
2311 bool "pause command"
2313 Delay execution waiting for any user input.
2314 Useful to allow the user to read a failure log.
2319 default y if SANDBOX
2322 Print bytes from the hardware random number generator.
2324 config CMD_KASLRSEED
2328 Set the kaslr-seed in the chosen node with entropy provided by a
2329 hardware random number generator.
2335 Delay execution for some time
2338 bool "support for multiprocessor commands"
2342 This enables commands to bringup different processors
2343 in multiprocessor cases.
2348 Access the system timer.
2354 This provides basic access to the U-Boot's sound support. The main
2355 feature is to play a beep.
2357 sound init - set up sound system
2358 sound play - play a sound
2364 Boot image via local extlinux.conf file
2369 default y if TARGET_QEMU_ARM_32BIT || TARGET_QEMU_ARM_64BIT || \
2370 TARGET_QEMU_X86 || TARGET_QEMU_X86_64
2372 This provides access to the QEMU firmware interface. The main
2373 feature is to allow easy loading of files passed to qemu-system
2374 via -kernel / -initrd
2379 This provides access to Linux PStore with Rammoops backend. The main
2380 feature is to allow to display or save PStore records.
2382 See doc/pstore.rst for more information.
2386 config CMD_PSTORE_MEM_ADDR
2387 hex "Memory Address"
2388 depends on CMD_PSTORE
2390 Base addr used for PStore ramoops memory, should be identical to
2391 ramoops.mem_address parameter used by kernel
2393 config CMD_PSTORE_MEM_SIZE
2395 depends on CMD_PSTORE
2398 Size of PStore ramoops memory, should be identical to ramoops.mem_size
2399 parameter used by kernel, a power of 2 and larger than the sum of the
2402 config CMD_PSTORE_RECORD_SIZE
2403 hex "Dump record size"
2404 depends on CMD_PSTORE
2407 Size of each dump done on oops/panic, should be identical to
2408 ramoops.record_size parameter used by kernel and a power of 2
2411 config CMD_PSTORE_CONSOLE_SIZE
2412 hex "Kernel console log size"
2413 depends on CMD_PSTORE
2416 Size of kernel console log, should be identical to
2417 ramoops.console_size parameter used by kernel and a power of 2
2420 config CMD_PSTORE_FTRACE_SIZE
2421 hex "FTrace log size"
2422 depends on CMD_PSTORE
2425 Size of ftrace log, should be identical to ramoops.ftrace_size
2426 parameter used by kernel and a power of 2
2428 config CMD_PSTORE_PMSG_SIZE
2429 hex "User space message log size"
2430 depends on CMD_PSTORE
2433 Size of user space message log, should be identical to
2434 ramoops.pmsg_size parameter used by kernel and a power of 2
2436 config CMD_PSTORE_ECC_SIZE
2438 depends on CMD_PSTORE
2441 if non-zero, the option enables ECC support and specifies ECC buffer
2442 size in bytes (1 is a special value, means 16 bytes ECC), should be
2443 identical to ramoops.ramoops_ecc parameter used by kernel
2447 source "cmd/mvebu/Kconfig"
2450 bool "terminal - provides a way to attach a serial terminal"
2452 Provides a 'cu'-like serial terminal command. This can be used to
2453 access other serial ports from the system console. The terminal
2454 is very simple with no special processing of characters. As with
2455 cu, you can press ~. (tilde followed by period) to exit.
2458 bool "uuid, guid - generation of unique IDs"
2461 This enables two commands:
2463 uuid - generate random Universally Unique Identifier
2464 guid - generate Globally Unique Identifier based on random UUID
2466 The two commands are very similar except for the endianness of the
2469 config CMD_VIDCONSOLE
2470 bool "lcdputs and setcurs"
2474 Enabling this will provide 'setcurs' and 'lcdputs' commands which
2475 support cursor positioning and drawing strings on the video
2476 console (framebuffer).
2478 The name 'lcdputs' is a bit of a misnomer, but so named because the
2479 video device is often an LCD.
2481 config CMD_SELECT_FONT
2482 bool "select font size"
2484 default y if CONSOLE_TRUETYPE
2486 Enabling this will provide 'font' command.
2487 Allows font selection at runtime.
2491 source "cmd/ti/Kconfig"
2493 config CMD_BOOTSTAGE
2494 bool "Enable the 'bootstage' command"
2495 depends on BOOTSTAGE
2497 Add a 'bootstage' command which supports printing a report
2498 and un/stashing of bootstage data.
2500 menu "Power commands"
2502 bool "Enable Driver Model PMIC command"
2505 This is the pmic command, based on a driver model pmic's API.
2506 Command features are unchanged:
2507 - list - list pmic devices
2508 - pmic dev <id> - show or [set] operating pmic device (NEW)
2509 - pmic dump - dump registers
2510 - pmic read address - read byte of register at address
2511 - pmic write address - write byte to register at address
2512 The only one change for this command is 'dev' subcommand.
2514 config CMD_REGULATOR
2515 bool "Enable Driver Model REGULATOR command"
2516 depends on DM_REGULATOR
2518 This command is based on driver model regulator's API.
2519 User interface features:
2520 - list - list regulator devices
2521 - regulator dev <id> - show or [set] operating regulator device
2522 - regulator info - print constraints info
2523 - regulator status - print operating status
2524 - regulator value <val] <-f> - print/[set] voltage value [uV]
2525 - regulator current <val> - print/[set] current value [uA]
2526 - regulator mode <id> - print/[set] operating mode id
2527 - regulator enable - enable the regulator output
2528 - regulator disable - disable the regulator output
2530 The '-f' (force) option can be used for set the value which exceeds
2531 the limits, which are found in device-tree and are kept in regulator's
2532 uclass plat structure.
2536 menu "Security commands"
2538 bool "Enable the 'aes' command"
2541 This provides a means to encrypt and decrypt data using the AES
2542 (Advanced Encryption Standard). This algorithm uses a symetric key
2543 and is widely used as a streaming cipher. Different key lengths are
2544 supported by the algorithm but this command only supports 128 bits
2548 bool "Enable the 'blob' command"
2549 depends on !MX6ULL && !MX6SLL && !MX6SL
2550 select IMX_HAB if ARCH_MX6 || ARCH_MX7 || ARCH_MX7ULP || ARCH_IMX8M
2552 This is used with the Freescale secure boot mechanism.
2554 Freescale's SEC block has built-in Blob Protocol which provides
2555 a method for protecting user-defined data across system power
2556 cycles. SEC block protects data in a data structure called a Blob,
2557 which provides both confidentiality and integrity protection.
2559 Encapsulating data as a blob
2560 Each time that the Blob Protocol is used to protect data, a
2561 different randomly generated key is used to encrypt the data.
2562 This random key is itself encrypted using a key which is derived
2563 from SoC's non-volatile secret key and a 16 bit Key identifier.
2564 The resulting encrypted key along with encrypted data is called a
2565 blob. The non-volatile secure key is available for use only during
2568 During decapsulation, the reverse process is performed to get back
2572 blob enc - encapsulating data as a cryptgraphic blob
2573 blob dec - decapsulating cryptgraphic blob to get the data
2577 blob enc src dst len km
2579 Encapsulate and create blob of data $len bytes long
2580 at address $src and store the result at address $dst.
2581 $km is the 16 byte key modifier is also required for
2582 generation/use as key for cryptographic operation. Key
2583 modifier should be 16 byte long.
2585 blob dec src dst len km
2587 Decapsulate the blob of data at address $src and
2588 store result of $len byte at addr $dst.
2589 $km is the 16 byte key modifier is also required for
2590 generation/use as key for cryptographic operation. Key
2591 modifier should be 16 byte long.
2594 bool "Support 'hash' command"
2597 This provides a way to hash data in memory using various supported
2598 algorithms (such as SHA1, MD5, CRC32). The computed digest can be
2599 saved to memory or to an environment variable. It is also possible
2600 to verify a hash against data in memory.
2603 bool "Support the 'hvc' command"
2604 depends on ARM_SMCCC
2606 Allows issuing Hypervisor Calls (HVCs). Mostly useful for
2607 development and testing.
2610 bool "Support the 'smc' command"
2611 depends on ARM_SMCCC
2613 Allows issuing Secure Monitor Calls (SMCs). Mostly useful for
2614 development and testing.
2620 Add -v option to verify data against a hash.
2623 bool "scp03 - SCP03 enable and rotate/provision operations"
2626 This command provides access to a Trusted Application
2627 running in a TEE to request Secure Channel Protocol 03
2628 (SCP03) enablement and/or rotation of its SCP03 keys.
2637 bool "Enable the 'tpm' command"
2638 depends on TPM_V1 || TPM_V2
2639 select CMD_TPM_V1 if TPM_V1
2640 select CMD_TPM_V2 if TPM_V2
2642 This provides a means to talk to a TPM from the command line. A wide
2643 range of commands if provided - see 'tpm help' for details. The
2644 command requires a suitable TPM on your board and the correct driver
2650 bool "Enable the 'tpm test' command"
2653 This provides a a series of tests to confirm that the TPMv1.x is
2654 working correctly. The tests cover initialisation, non-volatile RAM,
2655 extend, global lock and checking that timing is within expectations.
2656 The tests pass correctly on Infineon TPMs but may need to be adjusted
2663 menu "Firmware commands"
2665 bool "Enable crosec command"
2669 Enable command-line access to the Chrome OS EC (Embedded
2670 Controller). This provides the 'crosec' command which has
2671 a number of sub-commands for performing EC tasks such as
2672 updating its flash, accessing a small saved context area
2673 and talking to the I2C bus behind the EC (if there is one).
2676 bool "Enable scmi command"
2677 depends on SCMI_FIRMWARE
2679 This command provides user interfaces to several SCMI (System
2680 Control and Management Interface) protocols available on Arm
2681 platforms to manage system resources.
2684 menu "Filesystem commands"
2686 bool "Enable the 'btrsubvol' command"
2689 This enables the 'btrsubvol' command to list subvolumes
2690 of a BTRFS filesystem. There are no special commands for
2691 listing BTRFS directories or loading BTRFS files - this
2692 can be done by the generic 'fs' commands (see CMD_FS_GENERIC)
2693 when BTRFS is enabled (see FS_BTRFS).
2696 bool "Enable the 'cbfs' command"
2699 Define this to enable support for reading from a Coreboot
2700 filesystem. This is a ROM-based filesystem used for accessing files
2701 on systems that use coreboot as the first boot-loader and then load
2702 U-Boot to actually boot the Operating System. Available commands are
2703 cbfsinit, cbfsinfo, cbfsls and cbfsload.
2706 bool "Enable the 'cramfs' command"
2707 depends on FS_CRAMFS
2709 This provides commands for dealing with CRAMFS (Compressed ROM
2710 filesystem). CRAMFS is useful when space is tight since files are
2711 compressed. Two commands are provided:
2713 cramfsls - lists files in a cramfs image
2714 cramfsload - loads a file from a cramfs image
2717 bool "EROFS command support"
2720 Support for the EROFS fs
2723 bool "ext2 command support"
2726 Enables EXT2 FS command
2729 bool "ext4 command support"
2732 Enables EXT4 FS command
2734 config CMD_EXT4_WRITE
2736 bool "ext4 write command support"
2739 Enables EXT4 FS write command
2742 bool "FAT command support"
2745 Support for the FAT fs
2748 bool "SquashFS command support"
2751 Enables SquashFS filesystem commands (e.g. load, ls).
2753 config CMD_FS_GENERIC
2754 bool "filesystem commands"
2756 Enables filesystem commands (e.g. load, ls) that work for multiple
2760 bool "fsuuid command"
2762 Enables fsuuid command for filesystem UUID.
2765 bool "jffs2 command"
2768 Enables commands to support the JFFS2 (Journalling Flash File System
2769 version 2) filesystem. This enables fsload, ls and fsinfo which
2770 provide the ability to load files, list directories and obtain
2771 filesystem information.
2774 string "Default device for JFFS2"
2775 depends on CMD_JFFS2
2778 The default device to use with the jffs2 command.
2780 config JFFS2_PART_OFFSET
2781 hex "Default offset within flash to locate the JFFS2 image"
2782 depends on CMD_JFFS2
2785 The default offset within flash to locate the JFFS2 image.
2787 config JFFS2_PART_SIZE
2788 hex "Default size of JFFS2 partition"
2789 depends on CMD_JFFS2
2792 The default size of the JFFS2 partition
2795 bool "MTD partition support"
2797 select MTD_PARTITIONS
2799 MTD partitioning tool support.
2800 It is strongly encouraged to avoid using this command
2801 anymore along with 'sf', 'nand', 'onenand'. One can still
2802 declare the partitions in the mtdparts environment variable
2803 but better use the MTD stack and the 'mtd' command instead.
2805 config CMD_MTDPARTS_SPREAD
2806 bool "Padd partition size to take account of bad blocks"
2807 depends on CMD_MTDPARTS
2809 This enables the 'spread' sub-command of the mtdparts command.
2810 This command will modify the existing mtdparts variable by increasing
2811 the size of the partitions such that 1) each partition's net size is
2812 at least as large as the size specified in the mtdparts variable and
2813 2) each partition starts on a good block.
2815 config CMD_MTDPARTS_SHOW_NET_SIZES
2816 bool "Show net size (w/o bad blocks) of partitions"
2817 depends on CMD_MTDPARTS
2819 Adds two columns to the printed partition table showing the
2820 effective usable size of a partition, if bad blocks are taken
2823 config MTDIDS_DEFAULT
2824 string "Default MTD IDs"
2825 depends on MTD || SPI_FLASH
2826 depends on !SYS_MTDPARTS_RUNTIME
2828 Defines a default MTD IDs list for use with MTD partitions in the
2829 Linux MTD command line partitions format.
2831 config MTDPARTS_DEFAULT
2832 string "Default MTD partition scheme"
2833 depends on MTD || SPI_FLASH
2834 depends on !SYS_MTDPARTS_RUNTIME
2836 Defines a default MTD partitioning scheme in the Linux MTD command
2837 line partitions format
2840 bool "yaffs2 - Access of YAFFS2 filesystem"
2844 This provides commands for accessing a YAFFS2 filesystem. Yet
2845 Another Flash Filesystem 2 is a filesystem designed specifically
2846 for NAND flash. It incorporates bad-block management and ensures
2847 that device writes are sequential regardless of filesystem
2851 bool "zfs - Access of ZFS filesystem"
2853 This provides commands to accessing a ZFS filesystem, commonly used
2854 on Solaris systems. Two sub-commands are provided:
2856 zfsls - list files in a directory
2857 zfsload - load a file
2859 See doc/README.zfs for more details.
2863 menu "Debug commands"
2865 config CMD_CBSYSINFO
2868 default y if SYS_COREBOOT
2870 This provides information about the coreboot sysinfo table stored in
2871 memory by coreboot before jumping to U-Boot. It can be useful for
2872 debugging the beaaviour of coreboot or U-Boot.
2875 bool "cyclic - Show information about cyclic functions"
2879 This enables the 'cyclic' command which provides information about
2880 cyclic execution functions. This infrastructure allows registering
2881 functions to be executed cyclically, e.g. every 100ms. These commands
2884 cyclic list - list cyclic functions
2885 cyclic cyclic demo <cycletime_ms> <delay_us> - register cyclic
2888 See doc/develop/cyclic.rst for more details.
2891 bool "diag - Board diagnostics"
2893 This command provides access to board diagnostic tests. These are
2894 called Power-on Self Tests (POST). The command allows listing of
2895 available tests and running either all the tests, or specific tests
2899 bool "event - Show information about events"
2901 default y if EVENT_DEBUG
2903 This enables the 'event' command which provides information about
2904 events and event-handler routines. This can help to device event
2908 bool "irq - Show information about interrupts"
2909 depends on !ARM && !MIPS && !RISCV && !SH
2911 This enables two commands:
2913 interrupts - enable or disable interrupts
2914 irqinfo - print device-specific interrupt information
2917 bool "kgdb - Allow debugging of U-Boot with gdb"
2920 This enables a 'kgdb' command which allows gdb to connect to U-Boot
2921 over a serial link for debugging purposes. This allows
2922 single-stepping, inspecting variables, etc. This is supported only
2923 on PowerPC at present.
2926 bool "log - Generation, control and access to logging"
2930 This provides access to logging features. It allows the output of
2931 log data to be controlled to a limited extent (setting up the default
2932 maximum log level for emitting of records). It also provides access
2933 to a command used for testing the log system.
2936 bool "trace - Support tracing of function calls and timing"
2940 Enables a command to control using of function tracing within
2941 U-Boot. This allows recording of call traces including timing
2942 information. The command can write data to memory for exporting
2943 for analysis (e.g. using bootchart). See doc/develop/trace.rst
2947 bool "avb - Android Verified Boot 2.0 operations"
2948 depends on AVB_VERIFY
2950 Enables a "avb" command to perform verification of partitions using
2951 Android Verified Boot 2.0 functionality. It includes such subcommands:
2952 avb init - initialize avb2 subsystem
2953 avb read_rb - read rollback index
2954 avb write_rb - write rollback index
2955 avb is_unlocked - check device lock state
2956 avb get_uuid - read and print uuid of a partition
2957 avb read_part - read data from partition
2958 avb read_part_hex - read data from partition and output to stdout
2959 avb write_part - write data to partition
2960 avb verify - run full verification chain
2962 config CMD_STACKPROTECTOR_TEST
2963 bool "Test command for stack protector"
2964 depends on STACKPROTECTOR
2966 Enable stackprot_test command
2967 The stackprot_test command will force a stack overrun to test
2968 the stack smashing detection mechanisms.
2973 tristate "Enable UBI - Unsorted block images commands"
2976 UBI is a software layer above MTD layer which admits use of LVM-like
2977 logical volumes on top of MTD devices, hides some complexities of
2978 flash chips like wear and bad blocks and provides some other useful
2979 capabilities. Please, consult the MTD web site for more details
2980 (www.linux-mtd.infradead.org). Activate this option if you want
2981 to use U-Boot UBI commands.
2982 It is also strongly encouraged to also enable CONFIG_MTD to get full
2985 config CMD_UBI_RENAME
2986 bool "Enable rename"
2989 Enable a "ubi" command to rename ubi volume:
2990 ubi rename <oldname> <newname>
2993 tristate "Enable UBIFS - Unsorted block images filesystem commands"
2995 default y if CMD_UBI
2999 UBIFS is a file system for flash devices which works on top of UBI.
3002 bool "Amlogic Meson commands"
3003 depends on ARCH_MESON
3006 Enable useful commands for the Meson Soc family developed by Amlogic Inc.
projects / J-u-boot.git / blob