1 menu "Command line interface"
4 bool "Support U-Boot commands"
7 Enable U-Boot's command-line functions. This provides a means
8 to enter commands into U-Boot for a wide variety of purposes. It
9 also allows scripts (containing commands) to be executed.
10 Various commands and command categorys can be indivdually enabled.
11 Depending on the number of commands enabled, this can add
12 substantially to the size of U-Boot.
18 This option enables the "hush" shell (from Busybox) as command line
19 interpreter, thus enabling powerful command line syntax like
20 if...then...else...fi conditionals or `&&' and '||'
21 constructs ("shell scripts").
23 If disabled, you get the old, much simpler behaviour with a somewhat
24 smaller memory footprint.
26 config CMDLINE_EDITING
27 bool "Enable command line editing"
31 Enable editing and History functions for interactive command line
34 config CMDLINE_PS_SUPPORT
35 bool "Enable support for changing the command prompt string at run-time"
36 depends on HUSH_PARSER
38 Only static string in the prompt is supported so far. The string is
39 obtained from environment variables PS1 and PS2.
42 bool "Enable auto complete using TAB"
46 Enable auto completion of commands using TAB.
49 bool "Enable long help messages"
53 Defined when you want long help messages included
54 Do not set this option when short of memory.
58 default "Zynq> " if ARCH_ZYNQ
59 default "ZynqMP> " if ARCH_ZYNQMP
62 This string is displayed in the command line to the left of the
65 config SYS_PROMPT_HUSH_PS2
66 string "Hush shell secondary prompt"
67 depends on HUSH_PARSER
70 This defines the secondary prompt string, which is
71 printed when the command interpreter needs more input
72 to complete a command. Usually "> ".
75 int "Maximum number arguments accepted by commands"
79 int "Console input buffer size"
80 default 2048 if ARCH_TEGRA || ARCH_VERSAL || ARCH_ZYNQ || ARCH_ZYNQMP || \
81 RCAR_GEN3 || TARGET_SOCFPGA_SOC64
82 default 512 if ARCH_MX5 || ARCH_MX6 || ARCH_MX7 || FSL_LSCH2 || \
84 default 256 if M68K || PPC
88 int "Buffer size for console output"
89 default 1024 if ARCH_SUNXI
93 bool "Command execution tracer"
97 This option enables the possiblity to print all commands before
98 executing them and after all variables are evaluated (similar
99 to Bash's xtrace/'set -x' feature).
100 To enable the tracer a variable "xtrace" needs to be defined in
115 List and dump ACPI tables. ACPI (Advanced Configuration and Power
116 Interface) is used mostly on x86 for providing information to the
117 Operating System about devices in the system. The tables are set up
118 by the firmware, typically U-Boot but possibly an earlier firmware
119 module, if U-Boot is chain-loaded from something else. ACPI tables
120 can also include code, to perform hardware-specific tasks required
121 by the Operating Systems. This allows some amount of separation
122 between the firmware and OS, and is particularly useful when you
123 want to make hardware changes without the OS needing to be adjusted.
130 List non-identity virtual-physical memory mappings for 32-bit CPUs.
138 config CMD_BDINFO_EXTRA
139 bool "bdinfo extra features"
140 default y if SANDBOX || X86
142 Show additional information about the board. This uses a little more
143 code space but provides more options, particularly those useful for
144 bringup, development and debugging.
151 Print ".config" contents.
153 If this option is enabled, the ".config" file contents are embedded
154 in the U-Boot image and can be printed on the console by the "config"
155 command. This provides information of which options are enabled on
162 Print console devices and information.
168 Print information about available CPUs. This normally shows the
169 number of CPUs, type (e.g. manufacturer, architecture, product or
170 internal name) and clock frequency. Other information may be
171 available depending on the CPU driver.
173 config CMD_FWU_METADATA
174 bool "fwu metadata read"
175 depends on FWU_MULTI_BANK_UPDATE
177 Command to read the metadata and dump it's contents
183 Print GPL license text
188 Provides access to the Intel Power-Management Controller (PMC) so
189 that its state can be examined. This does not currently support
190 changing the state but it is still useful for debugging and seeing
199 config CMD_TLV_EEPROM
201 depends on I2C_EEPROM
204 Display and program the system EEPROM data block in ONIE Tlvinfo
205 format. TLV stands for Type-Length-Value.
207 config SPL_CMD_TLV_EEPROM
208 bool "tlv_eeprom for SPL"
209 depends on SPL_I2C_EEPROM
210 select SPL_DRIVERS_MISC
213 Read system EEPROM data block in ONIE Tlvinfo format from SPL.
217 depends on RISCV_SMODE && SBI_V02
219 Display information about the SBI implementation.
229 Run the command stored in the environment "bootcmd", i.e.
230 "bootd" does the same thing as "run bootcmd".
236 Boot an application image from the memory.
238 config CMD_BOOTM_PRE_LOAD
239 bool "enable pre-load on bootm"
241 depends on IMAGE_PRE_LOAD
244 Enable support of stage pre-load for the bootm command.
245 This stage allow to check or modify the image provided
246 to the bootm command.
251 default y if BOOTSTD_FULL
253 Support listing available bootdevs (boot devices) which can provide an
254 OS to boot, as well as showing information about a particular one.
256 This command is not necessary for bootstd to work.
263 Support scanning for bootflows available with the bootdevs. The
264 bootflows can optionally be booted.
266 config CMD_BOOTFLOW_FULL
267 bool "bootflow - extract subcommands"
268 depends on BOOTSTD_FULL
271 Add the ability to list the available bootflows, select one and obtain
272 information about it.
274 This command is not necessary for bootstd to work.
279 default y if BOOTSTD_FULL
281 Support listing available bootmethds (methods used to boot an
282 Operating System), as well as selecting the order that the bootmeths
285 This command is not necessary for bootstd to work.
288 bool "Support booting UEFI FIT images"
289 depends on CMD_BOOTEFI && CMD_BOOTM && FIT
292 Support booting UEFI FIT images via the bootm command.
297 Boot the Linux zImage
301 depends on ARM64 || RISCV
304 Boot an AArch64 Linux Kernel image from memory.
307 bool "Support booting Linux OS images"
308 depends on CMD_BOOTM || CMD_BOOTZ || CMD_BOOTI
311 Support booting the Linux kernel directly via a command such as bootm
315 bool "Support booting NetBSD (non-EFI) loader images"
319 Support booting NetBSD via the bootm command.
321 config BOOTM_OPENRTOS
322 bool "Support booting OPENRTOS / FreeRTOS images"
325 Support booting OPENRTOS / FreeRTOS via the bootm command.
328 bool "Support booting Enea OSE images"
329 depends on (ARM && (ARM64 || CPU_V7A || CPU_V7R) || SANDBOX || PPC || X86)
332 Support booting Enea OSE images via the bootm command.
335 bool "Support booting Plan9 OS images"
339 Support booting Plan9 images via the bootm command.
342 bool "Support booting RTEMS OS images"
346 Support booting RTEMS images via the bootm command.
349 bool "Support read SEAMA NAND images"
350 depends on MTD_RAW_NAND
352 Support reading NAND Seattle Image (SEAMA) images.
355 bool "vbe - Verified Boot for Embedded"
356 depends on BOOTMETH_VBE
357 default y if BOOTSTD_FULL
359 Provides various subcommands related to VBE, such as listing the
360 available methods, looking at the state and changing which method
361 is used to boot. Updating the parameters is not currently
365 bool "Support booting VxWorks OS images"
369 Support booting VxWorks images via the bootm command.
372 hex "Maximum size of a decompresed OS image"
373 depends on CMD_BOOTM || CMD_BOOTI || CMD_BOOTZ || \
374 LEGACY_IMAGE_FORMAT || SPL_LEGACY_IMAGE_FORMAT
375 default 0x4000000 if PPC || ARM64
376 default 0x1000000 if X86 || ARCH_MX6 || ARCH_MX7
379 This is the maximum size of the buffer that is used to decompress the OS
380 image in to, if passing a compressed image to bootm/booti/bootz.
384 depends on EFI_LOADER
387 Boot an EFI image from memory.
389 config CMD_BOOTEFI_HELLO_COMPILE
390 bool "Compile a standard EFI hello world binary for testing"
391 depends on CMD_BOOTEFI && !CPU_V7M
394 This compiles a standard EFI hello world application with U-Boot so
395 that it can be used with the test/py testing framework. This is useful
396 for testing that EFI is working at a basic level, and for bringing
397 up EFI support on a new architecture.
399 No additional space will be required in the resulting U-Boot binary
400 when this option is enabled.
402 config CMD_BOOTEFI_HELLO
403 bool "Allow booting a standard EFI hello world for testing"
404 depends on CMD_BOOTEFI_HELLO_COMPILE
405 default y if CMD_BOOTEFI_SELFTEST
407 This adds a standard EFI hello world application to U-Boot so that
408 it can be used with the 'bootefi hello' command. This is useful
409 for testing that EFI is working at a basic level, and for bringing
410 up EFI support on a new architecture.
412 source lib/efi_selftest/Kconfig
419 Add an ANSI terminal boot menu command.
424 Android DTB/DTBO image manipulation commands. Read dtb/dtbo files from
425 image into RAM, dump image structure information, etc. Those dtb/dtbo
426 files should be merged in one dtb further, which needs to be passed to
427 the kernel, as part of a boot process.
431 depends on ANDROID_BOOT_IMAGE
433 Android Boot Image manipulation commands. Allows one to extract
434 images contained in boot.img, like kernel, ramdisk, dtb, etc, and
435 obtain corresponding meta-information from boot.img.
437 See doc/android/boot-image.rst for details.
440 bool "cedit - Configuration editor"
444 Provides a command to allow editing of board configuration and
445 providing a UI for the user to adjust settings. Subcommands allow
446 loading and saving of configuration as well as showing an editor.
449 bool "bootelf, bootvx"
453 Boot an ELF/vxWorks image from the memory.
456 bool "Flattened Device Tree utility commands"
460 Do FDT related setup before booting into the Operating System.
462 config SUPPORT_EXTENSION_SCAN
466 bool "Extension board management command"
468 depends on SUPPORT_EXTENSION_SCAN
470 Enables the "extension" command, which allows to detect
471 extension boards connected to the system, and apply
472 corresponding Device Tree overlays.
478 Start an application at a given address.
484 Run the command in the given environment variable.
490 Print header information for application image.
495 List all images found in flash
501 Extract a part of a multi-image.
504 bool "spl export - Export boot information for Falcon boot"
507 Falcon mode allows booting directly from SPL into an Operating
508 System such as Linux, thus skipping U-Boot proper. See
509 doc/README.falcon for full information about how to use this
512 config CMD_SPL_NAND_OFS
513 hex "Offset of OS args or dtb for Falcon-mode NAND boot"
514 depends on CMD_SPL && (TPL_NAND_SUPPORT || SPL_NAND_SUPPORT)
517 This provides the offset of the command line arguments for Linux
518 when booting from NAND in Falcon mode. See doc/README.falcon
519 for full information about how to use this option (and also see
520 board/gateworks/gw_ventana/README for an example).
522 config CMD_SPL_NOR_OFS
523 hex "Offset of OS args or dtb for Falcon-mode NOR boot"
524 depends on CMD_SPL && SPL_NOR_SUPPORT
527 This provides the offset of the command line arguments or dtb for
528 Linux when booting from NOR in Falcon mode.
530 config CMD_SPL_WRITE_SIZE
531 hex "Size of argument area"
535 This provides the size of the command-line argument area in NAND
536 flash used by Falcon-mode boot. See the documentation until CMD_SPL
539 config CMD_THOR_DOWNLOAD
540 bool "thor - TIZEN 'thor' download"
542 select USB_FUNCTION_THOR
543 depends on USB_GADGET_DOWNLOAD
545 Implements the 'thor' download protocol. This is a way of
546 downloading a software update over USB from an attached host.
547 There is no documentation about this within the U-Boot source code
548 but you should be able to find something on the interwebs.
550 config THOR_RESET_OFF
551 bool "thor: Disable reset on completion"
552 depends on CMD_THOR_DOWNLOAD
555 bool "zboot - x86 boot command"
557 With x86 machines it is common to boot a bzImage file which
558 contains both a kernel and a setup.bin file. The latter includes
559 configuration information from the dark ages which x86 boards still
560 need to pick things out of.
562 Consider using FIT in preference to this since it supports directly
563 booting both 32- and 64-bit kernels, as well as secure boot.
564 Documentation is available in doc/uImage.FIT/x86-fit-boot.txt
568 menu "Environment commands"
571 bool "ask for env variable"
573 Ask for environment variable
591 Edit environment variable.
596 Allow for searching environment variables
602 Save all environment variables into the compiled-in persistent
607 depends on CMD_SAVEENV
609 Erase environment variables from the compiled-in persistent
612 config CMD_ENV_EXISTS
616 Check if a variable is defined in the environment for use in
619 config CMD_ENV_CALLBACK
620 bool "env callbacks - print callbacks and their associated variables"
622 Some environment variable have callbacks defined by
623 U_BOOT_ENV_CALLBACK. These are called when the variable changes.
624 For example changing "baudrate" adjust the serial baud rate. This
625 command lists the currently defined callbacks.
628 bool "env flags -print variables that have non-default flags"
630 Some environment variables have special flags that control their
631 behaviour. For example, serial# can only be written once and cannot
632 be deleted. This command shows the variables that have special
635 config CMD_NVEDIT_EFI
636 bool "env [set|print] -e - set/print UEFI variables"
637 depends on EFI_LOADER
640 UEFI variables are encoded as some form of U-Boot variables.
641 If enabled, we are allowed to set/print UEFI variables using
642 "env" command with "-e" option without knowing details.
644 config CMD_NVEDIT_INDIRECT
645 bool "env indirect - Sets environment value from another"
647 config CMD_NVEDIT_INFO
648 bool "env info - print or evaluate environment information"
650 Print environment information:
651 - env_valid : is environment valid
652 - env_ready : is environment imported into hash table
653 - env_use_default : is default environment used
655 This command can be optionally used for evaluation in scripts:
656 [-d] : evaluate whether default environment is used
657 [-p] : evaluate whether environment can be persisted
659 The result of multiple evaluations will be combined with AND.
661 config CMD_NVEDIT_LOAD
664 Load all environment variables from the compiled-in persistent
667 config CMD_NVEDIT_SELECT
670 Select the compiled-in persistent storage of environment variables.
674 menu "Memory commands"
679 Compute binary operations (xor, or, and) of byte arrays of arbitrary
680 size from memory and store the result in memory or the environment.
684 default y if BLOBLIST
686 Show information about the bloblist, a collection of binary blobs
687 held in memory that persist between SPL and U-Boot. In the case of
688 x86 devices the bloblist can be used to hold ACPI tables so that they
689 remain available in memory.
702 Add -v option to verify data against a crc32 checksum.
705 bool "eeprom - EEPROM subsystem"
707 (deprecated, needs conversion to driver model)
708 Provides commands to read and write EEPROM (Electrically Erasable
709 Programmable Read Only Memory) chips that are connected over an
712 config CMD_EEPROM_LAYOUT
713 bool "Enable layout-aware eeprom commands"
714 depends on CMD_EEPROM
716 (deprecated, needs conversion to driver model)
717 When enabled, additional eeprom sub-commands become available.
719 eeprom print - prints the contents of the eeprom in a human-readable
720 way (eeprom layout fields, and data formatted to be fit for human
723 eeprom update - allows user to update eeprom fields by specifying
724 the field name, and providing the new data in a human readable format
725 (same format as displayed by the eeprom print command).
727 Both commands can either auto detect the layout, or be told which
731 __weak int parse_layout_version(char *str)
732 - override to provide your own layout name parsing
733 __weak void __eeprom_layout_assign(struct eeprom_layout *layout,
735 - override to setup the layout metadata based on the version
736 __weak int eeprom_layout_detect(unsigned char *data)
737 - override to provide your own algorithm for detecting layout
740 - contains various printing and updating functions for common
741 types of eeprom fields. Can be used for defining
744 config EEPROM_LAYOUT_HELP_STRING
745 string "Tells user what layout names are supported"
746 depends on CMD_EEPROM_LAYOUT
747 default "<not defined>"
749 Help printed with the LAYOUT VERSIONS part of the 'eeprom'
752 config SYS_I2C_EEPROM_BUS
753 int "I2C bus of the EEPROM device."
754 depends on CMD_EEPROM
757 config SYS_I2C_EEPROM_ADDR_LEN
758 int "Length in bytes of the EEPROM memory array address"
759 depends on CMD_EEPROM || ID_EEPROM
763 Note: This is NOT the chip address length!
765 config SYS_EEPROM_SIZE
766 depends on CMD_EEPROM
767 int "Size in bytes of the EEPROM device"
770 config SYS_EEPROM_PAGE_WRITE_BITS
771 int "Number of bits used to address bytes in a single page"
772 depends on CMD_EEPROM
775 The EEPROM page size is 2^SYS_EEPROM_PAGE_WRITE_BITS.
776 A 64 byte page, for example would require six bits.
778 config SYS_EEPROM_PAGE_WRITE_DELAY_MS
779 int "Number of milliseconds to delay between page writes"
780 depends on CMD_EEPROM || CMD_I2C
786 Infinite write loop on address range
792 Compute MD5 checksum.
796 depends on CMD_MD5SUM
798 Add -v option to verify data against an MD5 checksum.
803 Display memory information.
806 bool "md, mm, nm, mw, cp, cmp, base, loop"
811 mm - memory modify (auto-incrementing address)
812 nm - memory modify (constant address)
813 mw - memory write (fill)
816 base - print or set address offset
817 loop - initialize loop on address range
819 config CMD_MEM_SEARCH
820 bool "ms - Memory search"
822 Memory-search command
824 This allows searching through a region of memory looking for hex
825 data (byte, 16-bit word, 32-bit long, also 64-bit on machines that
826 support it). It is also possible to search for a string. The
827 command accepts a memory range and a list of values to search for.
828 The values need to appear in memory in the same order they are given
829 in the command. At most 10 matches can be returned at a time, but
830 pressing return will show the next 10 matches. Environment variables
831 are set for use with scripting (memmatches, memaddr, mempos).
834 bool "Enable cyclic md/mw commands"
835 depends on CMD_MEMORY
837 Add the "mdc" and "mwc" memory commands. These are cyclic
842 This command will print 4 bytes (10,11,12,13) each 500 ms.
844 => mwc.l 100 12345678 10
845 This command will write 12345678 to address 100 all 10 ms.
850 depends on CMD_MEMORY && (LIB_RAND || LIB_HW_RAND)
852 random - fill memory with random data
857 Simple RAM read/write test.
861 config SYS_ALT_MEMTEST
862 bool "Alternative test"
864 Use a more complete alternative memory test.
868 config SYS_ALT_MEMTEST_BITFLIP
872 The alternative memory test includes bitflip test since 2020.07.
873 The bitflip test significantly increases the overall test time.
874 Bitflip test can optionally be disabled here.
878 config SYS_MEMTEST_START
879 hex "default start address for mtest"
882 This is the default start address for mtest for simple read/write
883 test. If no arguments are given to mtest, default address is used
886 config SYS_MEMTEST_END
887 hex "default end address for mtest"
890 This is the default end address for mtest for simple read/write
891 test. If no arguments are given to mtest, default address is used
900 Compute SHA1 checksum.
902 config SHA1SUM_VERIFY
904 depends on CMD_SHA1SUM
906 Add -v option to verify data against a SHA1 checksum.
909 bool "strings - display strings in memory"
911 This works similarly to the Unix 'strings' command except that it
912 works with a memory range. String of printable characters found
913 within the range are displayed. The minimum number of characters
914 for a sequence to be considered a string can be provided.
918 menu "Compression commands"
922 default y if CMD_BOOTI
925 Support decompressing an LZMA (Lempel-Ziv-Markov chain algorithm)
930 default y if CMD_BOOTI
933 Support decompressing an LZ4 image from memory region.
937 default y if CMD_BOOTI
940 Uncompress a zip-compressed memory region.
944 select GZIP_COMPRESSED
946 Compress a memory region with zlib deflate method.
950 menu "Device access commands"
953 bool "Arm FF-A test command"
954 depends on ARM_FFA_TRANSPORT
956 Provides a test command for the FF-A support
958 - Listing the partition(s) info
959 - Sending a data pattern to the specified partition
960 - Displaying the arm_ffa device info
963 #depends on FLASH_CFI_DRIVER
966 ARM Ltd reference designs flash partition access
969 bool "adc - Access Analog to Digital Converters info and data"
971 depends on DM_REGULATOR
973 Shows ADC device info and permit printing one-shot analog converted
974 data from a named Analog to Digital Converter.
979 depends on PARTITIONS
981 Read/modify/write the fields of Bootloader Control Block, usually
982 stored on the flash "misc" partition with its structure defined in:
983 https://android.googlesource.com/platform/bootable/recovery/+/master/
984 bootloader_message/include/bootloader_message/bootloader_message.h
986 Some real-life use-cases include (but are not limited to):
987 - Determine the "boot reason" (and act accordingly):
988 https://source.android.com/devices/bootloader/boot-reason
989 - Get/pass a list of commands from/to recovery:
990 https://android.googlesource.com/platform/bootable/recovery
991 - Inspect/dump the contents of the BCB fields
994 bool "bind/unbind - Bind or unbind a device to/from a driver"
996 default y if USB_ETHER
998 Bind or unbind a device to/from a driver from the command line.
999 This is useful in situations where a device may be handled by several
1000 drivers. For example, this can be used to bind a UDC to the usb ether
1001 gadget driver from the command line.
1004 bool "clk - Show clock frequencies"
1007 Shows clock frequences by calling a sock_clk_dump() hook function.
1008 This is depreated in favour of using the CLK uclass and accessing
1009 clock values from associated drivers. However currently no command
1013 bool "demo - Demonstration commands for driver model"
1016 Provides a 'demo' command which can be used to play around with
1017 driver model. To use this properly you will need to enable one or
1018 both of the demo devices (DM_DEMO_SHAPE and DM_DEMO_SIMPLE).
1019 Otherwise you will always get an empty list of devices. The demo
1020 devices are defined in the sandbox device tree, so the easiest
1021 option is to use sandbox and pass the -d point to sandbox's
1028 Enables the command "dfu" which is used to have U-Boot create a DFU
1029 class device via USB. This command requires that the "dfu_alt_info"
1030 environment variable be set and define the alt settings to expose to
1034 bool "dm - Access to driver model information"
1037 Provides access to driver model data structures and information,
1038 such as a list of devices, list of uclasses and the state of each
1039 device (e.g. activated). This is not required for operation, but
1040 can be useful to see the state of driver model for debugging or
1044 bool "fastboot - Android fastboot support"
1047 This enables the command "fastboot" which enables the Android
1048 fastboot mode for the platform. Fastboot is a protocol for
1049 downloading images, flashing and device control used on
1050 Android devices. Fastboot requires either the network stack
1051 enabled or support for acting as a USB device.
1053 See doc/android/fastboot.rst for more information.
1056 bool "flinfo, erase, protect"
1058 depends on MTD || FLASH_CFI_DRIVER || MTD_NOR_FLASH
1061 flinfo - print FLASH memory information
1062 erase - FLASH memory
1063 protect - enable or disable FLASH write protection
1072 config CMD_FPGA_LOADBP
1073 bool "fpga loadbp - load partial bitstream (Xilinx only)"
1076 Supports loading an FPGA device from a bitstream buffer containing
1077 a partial bitstream.
1079 config CMD_FPGA_LOADFS
1080 bool "fpga loadfs - load bitstream from FAT filesystem (Xilinx only)"
1083 Supports loading an FPGA device from a FAT filesystem.
1085 config CMD_FPGA_LOADMK
1086 bool "fpga loadmk - load bitstream from image"
1089 Supports loading an FPGA device from a image generated by mkimage.
1091 config CMD_FPGA_LOADP
1092 bool "fpga loadp - load partial bitstream"
1095 Supports loading an FPGA device from a bitstream buffer containing
1096 a partial bitstream.
1098 config CMD_FPGA_LOAD_SECURE
1099 bool "fpga loads - loads secure bitstreams"
1101 select FPGA_LOAD_SECURE
1103 Enables the fpga loads command which is used to load secure
1104 (authenticated or encrypted or both) bitstreams on to FPGA.
1107 bool "fpgad - dump FPGA registers"
1109 (legacy, needs conversion to driver model)
1110 Provides a way to dump FPGA registers by calling the board-specific
1111 fpga_get_reg() function. This functions similarly to the 'md'
1115 bool "fuse - support for the fuse subssystem"
1117 (deprecated - needs conversion to driver model)
1118 This allows reading, sensing, programming or overriding fuses
1119 which control the behaviour of the device. The command uses the
1127 config CMD_GPIO_READ
1128 bool "gpio read - save GPIO value to variable"
1131 Enables the 'gpio read' command that saves the value
1132 of a GPIO pin to a variable.
1138 Control PWM channels, this allows invert/config/enable/disable PWM channels.
1141 bool "GPT (GUID Partition Table) command"
1142 select EFI_PARTITION
1143 select PARTITION_UUIDS
1146 Enable the 'gpt' command to ready and write GPT style partition
1150 bool "GPT Random UUID generation"
1153 Enable the generation of partitions with random UUIDs if none
1156 config CMD_GPT_RENAME
1157 bool "GPT partition renaming commands"
1160 Enables the 'gpt' command to interchange names on two GPT
1161 partitions via the 'gpt swap' command or to rename single
1162 partitions via the 'rename' command.
1165 bool "ide - Support for IDE drivers"
1168 Provides an 'ide' command which allows accessing the IDE drive,
1169 resetting the IDE interface, printing the partition table and
1170 geting device info. It also enables the 'diskboot' command which
1171 permits booting from an IDE drive.
1174 bool "io - Support for performing I/O accesses"
1176 Provides an 'iod' command to display I/O space and an 'iow' command
1177 to write values to the I/O space. This can be useful for manually
1178 checking the state of devices during boot when debugging device
1182 bool "iotrace - Support for tracing I/O activity"
1184 Provides an 'iotrace' command which supports recording I/O reads and
1185 writes in a trace buffer in memory . It also maintains a checksum
1186 of the trace records (even if space is exhausted) so that the
1187 sequence of I/O accesses can be verified.
1189 When debugging drivers it is useful to see what I/O accesses were
1190 done and in what order.
1192 Even if the individual accesses are of little interest it can be
1193 useful to verify that the access pattern is consistent each time
1194 an operation is performed. In this case a checksum can be used to
1195 characterise the operation of a driver. The checksum can be compared
1196 across different runs of the operation to verify that the driver is
1199 In particular, when performing major refactoring of the driver, where
1200 the access pattern should not change, the checksum provides assurance
1201 that the refactoring work has not broken the driver.
1203 This works by sneaking into the io.h heder for an architecture and
1204 redirecting I/O accesses through iotrace's tracing mechanism.
1206 For now no commands are provided to examine the trace buffer. The
1207 format is fairly simple, so 'md' is a reasonable substitute.
1209 Note: The checksum feature is only useful for I/O regions where the
1210 contents do not change outside of software control. Where this is not
1211 suitable you can fall back to manually comparing the addresses. It
1212 might be useful to enhance tracing to only checksum the accesses and
1213 not the data read/written.
1223 bool "w1 - Support for Dallas 1-Wire protocol"
1225 Dallas 1-wire protocol support
1231 Load a binary file over serial line.
1236 Load a binary over memory mapped.
1239 bool "loads - Load a file over serial in S-Record format"
1242 Load an S-Record file over serial line
1245 bool "Echo all characters received during a loads back to console"
1246 depends on CMD_LOADS
1248 If enabled, all characters received during a serial download (using
1249 the "loads" command) are echoed back. This might be needed by some
1250 terminal emulations (like "cu"), but may as well just take time on
1251 others. This sets the initial value of the "loads_echo" environment
1255 bool "saves - Save a file over serial in S-Record format"
1256 depends on CMD_LOADS
1258 Provides a way to save a binary file using the Motorola S-Record
1259 format over the serial line.
1261 config SYS_LOADS_BAUD_CHANGE
1262 bool "Enable a temporary baudrate change during loads/saves command"
1263 depends on CMD_LOADS || CMD_SAVES
1265 config CMD_LOADXY_TIMEOUT
1266 int "loadxy_timeout"
1270 Initial timeout for loadx and loady commands. Zero means infinity.
1274 bool "lsblk - list block drivers and devices"
1276 Print list of available block device drivers, and for each, the list
1277 of known block devices.
1280 bool "MBR (Master Boot Record) command"
1281 select DOS_PARTITION
1283 Enable the 'mbr' command to ready and write MBR (Master Boot Record)
1284 style partition tables.
1290 Enable the command "misc" for accessing miscellaneous devices with
1291 a MISC uclass driver. The command provides listing all MISC devices
1292 as well as read and write functionalities via their drivers.
1298 MMC memory mapped support.
1302 config CMD_BKOPS_ENABLE
1303 bool "mmc bkops enable"
1306 Enable command for setting manual background operations handshake
1307 on a eMMC device. The feature is optionally available on eMMC devices
1308 conforming to standard >= 4.41.
1311 bool "Enable support for RPMB in the mmc command"
1312 depends on SUPPORT_EMMC_RPMB
1314 Enable the commands for reading, writing and programming the
1315 key for the Replay Protection Memory Block partition in eMMC.
1317 config CMD_MMC_SWRITE
1319 depends on MMC_WRITE
1322 Enable support for the "mmc swrite" command to write Android sparse
1331 Enable storage cloning over block devices, useful for
1332 initial flashing by external block device without network
1335 config CMD_OPTEE_RPMB
1336 bool "Enable read/write support on RPMB via OPTEE"
1337 depends on SUPPORT_EMMC_RPMB && OPTEE
1339 Enable the commands for reading, writing persistent named values
1340 in the Replay Protection Memory Block partition in eMMC by
1341 using Persistent Objects in OPTEE
1346 select MTD_PARTITIONS
1348 MTD commands support.
1352 depends on MULTIPLEXER
1354 List, select, and deselect mux controllers on the fly.
1358 default y if NAND_SUNXI
1359 depends on MTD_RAW_NAND
1364 config CMD_NAND_TRIMFFS
1365 bool "nand write.trimffs"
1366 default y if ARCH_SUNXI
1368 Allows one to skip empty pages when flashing something on a NAND.
1370 config CMD_NAND_LOCK_UNLOCK
1371 bool "nand lock/unlock"
1373 NAND locking support.
1375 config CMD_NAND_TORTURE
1378 NAND torture support.
1387 NVM Express device support
1390 bool "onenand - access to onenand device"
1393 OneNAND is a brand of NAND ('Not AND' gate) flash which provides
1394 various useful features. This command allows reading, writing,
1395 and erasing blocks. It allso provides a way to show and change
1396 bad blocks, and test the device.
1398 config USE_ONENAND_BOARD_INIT
1399 bool "Call onenand_board_init() in the onenand command"
1400 depends on CMD_ONENAND
1405 Enable the 'osd' command which allows to query information from and
1406 write text data to a on-screen display (OSD) device; a virtual device
1407 associated with a display capable of displaying a text overlay on the
1408 display it's associated with..
1412 depends on PARTITIONS
1413 select PARTITION_UUIDS
1415 Read and display information about the partition table on
1419 bool "pci - Access PCI devices"
1421 Provide access to PCI (Peripheral Interconnect Bus), a type of bus
1422 used on some devices to allow the CPU to communicate with its
1423 peripherals. Sub-commands allow bus enumeration, displaying and
1424 changing configuration space and a few other features.
1427 bool "pci_mps - Configure PCI device MPS"
1430 Enables PCI Express Maximum Packet Size (MPS) tuning. This
1431 command configures the PCI Express MPS of each endpoint to the
1432 largest value supported by all devices below the root complex.
1433 The Maximum Read Request Size will not be altered. This method is
1434 the same algorithm as used by Linux pci=pcie_bus_safe.
1437 bool "pinmux - show pins muxing"
1439 default y if PINCTRL
1441 Parse all available pin-controllers and show pins muxing. This
1442 is useful for debug purpoer to check the pin muxing and to know if
1443 a pin is configured as a GPIO or as an alternate function.
1448 Poweroff/Shutdown the system
1451 bool "read - Read binary data from a partition"
1453 Provides low-level access to the data in a partition.
1455 config CMD_REMOTEPROC
1457 depends on REMOTEPROC
1459 Support for Remote Processor control
1462 bool "sata - Access SATA subsystem"
1465 SATA (Serial Advanced Technology Attachment) is a serial bus
1466 standard for connecting to hard drives and other storage devices.
1467 This command provides information about attached devices and allows
1468 reading, writing and other operations.
1470 SATA replaces PATA (originally just ATA), which stands for Parallel AT
1471 Attachment, where AT refers to an IBM AT (Advanced Technology)
1472 computer released in 1984.
1475 bool "scsi - Access to SCSI devices"
1479 This provides a 'scsi' command which provides access to SCSI (Small
1480 Computer System Interface) devices. The command provides a way to
1481 scan the bus, reset the bus, read and write data and get information
1485 bool "sdram - Print SDRAM configuration information"
1487 Provides information about attached SDRAM. This assumed that the
1488 SDRAM has an EEPROM with information that can be read using the
1489 I2C bus. This is only available on some boards.
1493 depends on DM_SPI_FLASH || SPI_FLASH
1494 default y if DM_SPI_FLASH
1499 bool "sf test - Allow testing of SPI flash"
1502 Provides a way to test that SPI flash is working correctly. The
1503 test is destructive, in that an area of SPI flash must be provided
1504 for the test to use. Performance information is also provided,
1505 measuring the performance of reading, writing and erasing in
1506 Mbps (Million Bits Per Second). This value should approximately
1507 equal the SPI bus speed for a single-bit-wide SPI bus, assuming
1508 everything is working properly.
1511 bool "sspi - Command to access spi device"
1514 SPI utility command.
1516 config DEFAULT_SPI_BUS
1517 int "default spi bus used by sspi command"
1521 config DEFAULT_SPI_MODE
1522 hex "default spi mode used by sspi command (see include/spi.h)"
1526 config CMD_TEMPERATURE
1527 bool "temperature - display the temperature from thermal sensors"
1528 depends on DM_THERMAL
1530 Provides a way to list thermal sensors and to get their readings.
1533 bool "tsi148 - Command to access tsi148 device"
1535 This provides various sub-commands to initialise and configure the
1536 Turndra tsi148 device. See the command help for full details.
1539 bool "Enable UFS - Universal Flash Subsystem commands"
1542 "This provides commands to initialise and configure universal flash
1546 bool "universe - Command to set up the Turndra Universe controller"
1548 This allows setting up the VMEbus provided by this controller.
1549 See the command help for full details.
1559 select USB_FUNCTION_SDP
1561 Enables the command "sdp" which is used to have U-Boot emulating the
1562 Serial Download Protocol (SDP) via USB.
1566 depends on USB_FUNCTION_ROCKUSB
1568 Rockusb protocol is widely used by Rockchip SoC based devices. It can
1569 read/write info, image to/from devices. This enable rockusb command
1570 support to communication with rockusb device. for more detail about
1571 this command, please read doc/README.rockusb.
1573 config CMD_USB_MASS_STORAGE
1574 bool "UMS usb mass storage"
1575 depends on USB_GADGET_DOWNLOAD
1576 select USB_FUNCTION_MASS_STORAGE
1577 depends on BLK && USB_GADGET
1579 Enables the command "ums" and the USB mass storage support to the
1580 export a block device: U-Boot, the USB device, acts as a simple
1581 external hard drive plugged on the host USB port.
1583 config CMD_UMS_ABORT_KEYED
1584 bool "UMS abort with any key"
1585 depends on CMD_USB_MASS_STORAGE
1587 Allow interruption of usb mass storage run with any key pressed.
1590 bool "Xen para-virtualized block device"
1594 Xen para-virtualized block device support
1601 VirtIO block device support
1607 This provides commands to control the watchdog timer devices.
1610 bool "write - Write binary data to a partition"
1612 Provides low-level write access to a partition.
1618 Enable the command "axi" for accessing AXI (Advanced eXtensible
1619 Interface) busses, a on-chip interconnect specification for managing
1620 functional blocks in SoC designs, which is also often used in designs
1621 involving FPGAs (e.g. communication with IP cores in Xilinx FPGAs).
1625 menu "Shell scripting commands"
1630 Print file to standard output
1636 Echo args to console
1642 Return true/false on integer compare.
1648 Run script from memory
1654 Evaluate boolean and math expressions and store the result in an env
1656 Also supports loading the value at a memory location into a variable.
1657 If CONFIG_REGEX is enabled, setexpr also supports a gsub function.
1659 config CMD_SETEXPR_FMT
1661 depends on CMD_SETEXPR
1663 Evaluate format string expression and store result in an environment
1669 Print file as hexdump to standard output
1673 menu "Android support commands"
1675 config CMD_AB_SELECT
1677 depends on ANDROID_AB
1679 On Android devices with more than one boot slot (multiple copies of
1680 the kernel and system images) this provides a command to select which
1681 slot should be used to boot from and register the boot attempt. This
1682 is used by the new A/B update model where one slot is updated in the
1683 background while running from the other slot.
1690 bool "Network commands"
1700 bootp - boot image via network using BOOTP/TFTP protocol
1704 depends on CMD_BOOTP
1706 Boot image via network using DHCP/TFTP protocol
1712 Boot image via network using DHCPv6/TFTP protocol using IPv6.
1714 Will perform 4-message exchange with DHCPv6 server, requesting
1715 the minimum required options to TFTP boot. Complies with RFC 8415.
1717 config BOOTP_MAY_FAIL
1718 bool "Allow for the BOOTP/DHCP server to not be found"
1719 depends on CMD_BOOTP
1721 If the DHCP server is not found after the configured retry count, the
1722 call will fail instead of starting over. This can be used to fail
1723 over to Link-local IP address configuration if the DHCP server is not
1726 config BOOTP_BOOTPATH
1727 bool "Request & store 'rootpath' from BOOTP/DHCP server"
1729 depends on CMD_BOOTP
1731 Even though the config is called BOOTP_BOOTPATH, it stores the
1732 path in the variable 'rootpath'.
1734 config BOOTP_VENDOREX
1735 bool "Support vendor extensions from BOOTP/DHCP server"
1736 depends on CMD_BOOTP
1738 config BOOTP_BOOTFILESIZE
1739 bool "Request & store 'bootfilesize' from BOOTP/DHCP server"
1740 depends on CMD_BOOTP
1743 bool "Request & store 'dnsip' from BOOTP/DHCP server"
1745 depends on CMD_BOOTP
1747 The primary DNS server is stored as 'dnsip'. If two servers are
1748 returned, you must set BOOTP_DNS2 to store that second server IP
1752 bool "Store 'dnsip2' from BOOTP/DHCP server"
1753 depends on BOOTP_DNS
1755 If a DHCP client requests the DNS server IP from a DHCP server,
1756 it is possible that more than one DNS serverip is offered to the
1757 client. If CONFIG_BOOTP_DNS2 is enabled, the secondary DNS
1758 server IP will be stored in the additional environment
1759 variable "dnsip2". The first DNS serverip is always
1760 stored in the variable "dnsip", when BOOTP_DNS is defined.
1762 config BOOTP_GATEWAY
1763 bool "Request & store 'gatewayip' from BOOTP/DHCP server"
1765 depends on CMD_BOOTP
1767 config BOOTP_HOSTNAME
1768 bool "Request & store 'hostname' from BOOTP/DHCP server"
1770 depends on CMD_BOOTP
1772 The name may or may not be qualified with the local domain name.
1774 config BOOTP_PREFER_SERVERIP
1775 bool "serverip variable takes precedent over DHCP server IP."
1776 depends on CMD_BOOTP
1778 By default a BOOTP/DHCP reply will overwrite the 'serverip' variable.
1780 With this option enabled, the 'serverip' variable in the environment
1781 takes precedence over DHCP server IP and will only be set by the DHCP
1782 server if not already set in the environment.
1784 config BOOTP_SUBNETMASK
1785 bool "Request & store 'netmask' from BOOTP/DHCP server"
1787 depends on CMD_BOOTP
1789 config BOOTP_NISDOMAIN
1790 bool "Request & store 'nisdomain' from BOOTP/DHCP server"
1791 depends on CMD_BOOTP
1793 config BOOTP_NTPSERVER
1794 bool "Request & store 'ntpserverip' from BOOTP/DHCP server"
1795 depends on CMD_BOOTP
1797 config BOOTP_TIMEOFFSET
1798 bool "Request & store 'timeoffset' from BOOTP/DHCP server"
1799 depends on CMD_BOOTP && CMD_SNTP
1804 Selecting this will allow capturing all Ethernet packets and store
1805 them in physical memory in a PCAP formated file,
1806 later to be analyzed by PCAP reader application (IE. WireShark).
1809 bool "Send PXE client arch to BOOTP/DHCP server"
1811 depends on CMD_BOOTP && CMD_PXE
1813 Supported for ARM, ARM64, and x86 for now.
1815 config BOOTP_PXE_CLIENTARCH
1817 depends on BOOTP_PXE
1818 default 0x16 if ARM64
1822 config BOOTP_VCI_STRING
1824 depends on CMD_BOOTP
1825 default "U-Boot.armv7" if CPU_V7A || CPU_V7M || CPU_V7R
1826 default "U-Boot.armv8" if ARM64
1827 default "U-Boot.arm" if ARM
1832 config DHCP6_PXE_CLIENTARCH
1834 default 0x16 if ARM64
1838 config DHCP6_PXE_DHCP_OPTION
1839 bool "Request & store 'pxe_configfile' from DHCP6 server"
1841 config DHCP6_ENTERPRISE_ID
1842 int "Enterprise ID to send in DHCPv6 Vendor Class Option"
1851 tftpboot - load file via network using TFTP protocol
1855 depends on CMD_TFTPBOOT
1857 TFTP put command, for uploading files to a server
1861 depends on CMD_TFTPBOOT
1863 Act as a TFTP server and boot the first received file
1865 config NET_TFTP_VARS
1866 bool "Control TFTP timeout and count through environment"
1867 depends on CMD_TFTPBOOT
1870 If set, allows controlling the TFTP timeout through the
1871 environment variable tftptimeout, and the TFTP maximum
1872 timeout count through the variable tftptimeoutcountmax.
1873 If unset, timeout and maximum are hard-defined as 1 second
1874 and 10 timouts per TFTP transfer.
1879 Boot image via network using RARP/TFTP protocol
1884 Boot image via network using NFS protocol.
1887 int "Timeout in milliseconds for NFS mounts"
1891 Timeout in milliseconds used in NFS protocol. If you encounter
1892 "ERROR: Cannot umount" in nfs command, try longer timeout such as
1895 config SYS_DISABLE_AUTOLOAD
1896 bool "Disable automatically loading files over the network"
1897 depends on CMD_BOOTP || CMD_DHCP || CMD_NFS || CMD_RARP
1899 Typically, commands such as "dhcp" will attempt to automatically
1900 load a file from the network, once the initial network configuration
1901 is complete. Enable this option to disable this behavior and instead
1902 require files to be loaded over the network by subsequent commands.
1908 wget is a simple command to download kernel, or other files,
1909 from a http server over TCP.
1915 If set, allows 802.3(clause 22) MII Management functions interface access
1916 The management interface specified in Clause 22 provides
1917 a simple, two signal, serial interface to connect a
1918 Station Management entity and a managed PHY for providing access
1919 to management parameters and services.
1920 The interface is referred to as the MII management interface.
1923 bool "Call mii_init() in the mii command"
1924 depends on CMD_MII && (MPC8XX_FEC || FSLDMAFE || MCFFEC)
1930 If set, allows Enable 802.3(clause 45) MDIO interface registers access
1931 The MDIO interface is orthogonal to the MII interface and extends
1932 it by adding access to more registers through indirect addressing.
1937 Send ICMP ECHO_REQUEST to network host
1942 default y if (CMD_PING && IPV6)
1944 Send ICMPv6 ECHO_REQUEST to network host
1949 Perform CDP network configuration
1955 Synchronize RTC via network
1960 Lookup the IP of a hostname
1962 config CMD_LINK_LOCAL
1966 Acquire a network IP address using the link-local protocol
1972 Manually configure the attached NIC via NC-SI.
1973 Normally this happens automatically before other network
1976 config IPV6_ROUTER_DISCOVERY
1977 bool "Do IPv6 router discovery"
1980 Will automatically perform router solicitation on first IPv6
1987 Allow control of L2 Ethernet switch commands. These are supported
1988 by the vsc9953 Ethernet driver at present. Sub-commands allow
1989 operations such as enabling / disabling a port and
1990 viewing/maintaining the filtering database (FDB)
1996 Boot image via network using PXE protocol
2001 Wait for wake-on-lan Magic Packet
2005 menu "Misc commands"
2010 This is a simple sliding block puzzle game designed by Italian web
2011 developer Gabriele Cirulli. The game's objective is to slide numbered
2012 tiles on a grid to combine them to create a tile with the number
2015 This needs ANSI support on your terminal to work. It is not fully
2016 functional on a video device.
2019 bool "Enable 'bmp' command"
2023 This provides a way to obtain information about a BMP-format image
2024 and to display it. BMP (which presumably stands for BitMaP) is a
2025 file format defined by Microsoft which supports images of various
2026 depths, formats and compression methods. Headers on the file
2027 determine the formats used. This command can be used by first loading
2028 the image into RAM, then using this command to look at it or display
2031 config CMD_BOOTCOUNT
2033 depends on BOOTCOUNT_LIMIT
2035 Enable the bootcount command, which allows interrogation and
2036 reset of the bootcounter.
2039 bool "Enable board-specific commands"
2041 (deprecated: instead, please define a Kconfig option for each command)
2043 Some boards have board-specific commands which are only enabled
2044 during developemnt and need to be turned off for production. This
2045 option provides a way to control this. The commands that are enabled
2046 vary depending on the board.
2048 config CMD_BLOCK_CACHE
2049 bool "blkcache - control and stats for block cache"
2050 depends on BLOCK_CACHE
2051 default y if BLOCK_CACHE
2053 Enable the blkcache command, which can be used to control the
2054 operation of the cache functions.
2055 This is most useful when fine-tuning the operation of the cache
2056 during development, but also allows the cache to be disabled when
2057 it might hurt performance (e.g. when using the ums command).
2060 bool "blkmap - Composable virtual block devices"
2064 Create virtual block devices that are backed by various sources,
2065 e.g. RAM, or parts of an existing block device. Though much more
2066 rudimentary, it borrows a lot of ideas from Linux's device mapper
2070 - Treat a region of RAM as a block device, i.e. a RAM disk. This let's
2071 you extract files from filesystem images stored in RAM (perhaps as a
2072 result of a TFTP transfer).
2073 - Create a virtual partition on an existing device. This let's you
2074 access filesystems that aren't stored at an exact partition
2075 boundary. A common example is a filesystem image embedded in an FIT
2083 Enable the 'button' command which allows to get the status of
2084 buttons supported by the board. The buttonss can be listed with
2085 'button list' and state can be known with 'button <label>'.
2086 Any button drivers can be controlled with this command, e.g.
2090 bool "icache or dcache"
2092 Enable the "icache" and "dcache" commands
2094 config CMD_CONITRACE
2095 bool "conitrace - trace console input codes"
2097 Enable the 'conitrace' command which displays the codes received
2098 from the console input as hexadecimal numbers.
2101 bool "Enable clear screen command 'cls'"
2102 default y if LCD || VIDEO
2104 Enable the 'cls' command which clears the screen contents
2105 on video frame buffer.
2108 bool "efidebug - display/configure UEFI environment"
2109 depends on EFI_LOADER
2110 select EFI_DEVICE_PATH_TO_TEXT
2112 Enable the 'efidebug' command which provides a subset of UEFI
2113 shell utility with simplified functionality. It will be useful
2114 particularly for managing boot parameters as well as examining
2115 various EFI status for debugging.
2117 config CMD_EFICONFIG
2118 bool "eficonfig - provide menu-driven uefi variables maintenance interface"
2119 default y if !HAS_BOARD_SIZE_LIMIT
2120 depends on CMD_BOOTEFI_BOOTMGR
2123 Enable the 'eficonfig' command which provides the menu-driven UEFI
2124 variable maintenance interface.
2126 config CMD_EXCEPTION
2127 bool "exception - raise exception"
2128 depends on ARM || RISCV || SANDBOX || X86
2130 Enable the 'exception' command which allows to raise an exception.
2137 Enable the 'led' command which allows for control of LEDs supported
2138 by the board. The LEDs can be listed with 'led list' and controlled
2139 with led on/off/togle/blink. Any LED drivers can be controlled with
2140 this command, e.g. led_gpio.
2145 Enable the 'ini' command which allows a .ini file to be parsed and
2146 placed into environment variables. Please check the source code for
2147 this as there is no documentation.
2154 Enable the 'date' command for getting/setting the time/date in RTC
2161 Enable the 'rtc' command for low-level access to RTC devices.
2166 Run commands and summarize execution time.
2169 bool "gettime - read elapsed time"
2171 Enable the 'gettime' command which reads the elapsed time since
2172 U-Boot started running. This shows the time in seconds and
2173 milliseconds. See also the 'bootstage' command which provides more
2174 flexibility for boot timing.
2177 bool "pause command"
2179 Delay execution waiting for any user input.
2180 Useful to allow the user to read a failure log.
2185 default y if SANDBOX
2188 Print bytes from the hardware random number generator.
2190 config CMD_KASLRSEED
2194 Set the kaslr-seed in the chosen node with entropy provided by a
2195 hardware random number generator.
2201 Delay execution for some time
2204 bool "support for multiprocessor commands"
2208 This enables commands to bringup different processors
2209 in multiprocessor cases.
2214 Access the system timer.
2220 This provides basic access to the U-Boot's sound support. The main
2221 feature is to play a beep.
2223 sound init - set up sound system
2224 sound play - play a sound
2230 Boot image via local extlinux.conf file
2236 This provides access to the QEMU firmware interface. The main
2237 feature is to allow easy loading of files passed to qemu-system
2238 via -kernel / -initrd
2243 This provides access to Linux PStore with Rammoops backend. The main
2244 feature is to allow to display or save PStore records.
2246 See doc/pstore.rst for more information.
2250 config CMD_PSTORE_MEM_ADDR
2251 hex "Memory Address"
2252 depends on CMD_PSTORE
2254 Base addr used for PStore ramoops memory, should be identical to
2255 ramoops.mem_address parameter used by kernel
2257 config CMD_PSTORE_MEM_SIZE
2259 depends on CMD_PSTORE
2262 Size of PStore ramoops memory, should be identical to ramoops.mem_size
2263 parameter used by kernel, a power of 2 and larger than the sum of the
2266 config CMD_PSTORE_RECORD_SIZE
2267 hex "Dump record size"
2268 depends on CMD_PSTORE
2271 Size of each dump done on oops/panic, should be identical to
2272 ramoops.record_size parameter used by kernel and a power of 2
2275 config CMD_PSTORE_CONSOLE_SIZE
2276 hex "Kernel console log size"
2277 depends on CMD_PSTORE
2280 Size of kernel console log, should be identical to
2281 ramoops.console_size parameter used by kernel and a power of 2
2284 config CMD_PSTORE_FTRACE_SIZE
2285 hex "FTrace log size"
2286 depends on CMD_PSTORE
2289 Size of ftrace log, should be identical to ramoops.ftrace_size
2290 parameter used by kernel and a power of 2
2292 config CMD_PSTORE_PMSG_SIZE
2293 hex "User space message log size"
2294 depends on CMD_PSTORE
2297 Size of user space message log, should be identical to
2298 ramoops.pmsg_size parameter used by kernel and a power of 2
2300 config CMD_PSTORE_ECC_SIZE
2302 depends on CMD_PSTORE
2305 if non-zero, the option enables ECC support and specifies ECC buffer
2306 size in bytes (1 is a special value, means 16 bytes ECC), should be
2307 identical to ramoops.ramoops_ecc parameter used by kernel
2311 source "cmd/mvebu/Kconfig"
2314 bool "terminal - provides a way to attach a serial terminal"
2316 Provides a 'cu'-like serial terminal command. This can be used to
2317 access other serial ports from the system console. The terminal
2318 is very simple with no special processing of characters. As with
2319 cu, you can press ~. (tilde followed by period) to exit.
2322 bool "uuid, guid - generation of unique IDs"
2325 This enables two commands:
2327 uuid - generate random Universally Unique Identifier
2328 guid - generate Globally Unique Identifier based on random UUID
2330 The two commands are very similar except for the endianness of the
2333 config CMD_VIDCONSOLE
2334 bool "lcdputs and setcurs"
2338 Enabling this will provide 'setcurs' and 'lcdputs' commands which
2339 support cursor positioning and drawing strings on the video
2340 console (framebuffer).
2342 The name 'lcdputs' is a bit of a misnomer, but so named because the
2343 video device is often an LCD.
2345 config CMD_SELECT_FONT
2346 bool "select font size"
2350 Enabling this will provide 'font' command.
2351 Allows font selection at runtime.
2355 source "cmd/ti/Kconfig"
2357 config CMD_BOOTSTAGE
2358 bool "Enable the 'bootstage' command"
2359 depends on BOOTSTAGE
2361 Add a 'bootstage' command which supports printing a report
2362 and un/stashing of bootstage data.
2364 menu "Power commands"
2366 bool "Enable Driver Model PMIC command"
2369 This is the pmic command, based on a driver model pmic's API.
2370 Command features are unchanged:
2371 - list - list pmic devices
2372 - pmic dev <id> - show or [set] operating pmic device (NEW)
2373 - pmic dump - dump registers
2374 - pmic read address - read byte of register at address
2375 - pmic write address - write byte to register at address
2376 The only one change for this command is 'dev' subcommand.
2378 config CMD_REGULATOR
2379 bool "Enable Driver Model REGULATOR command"
2380 depends on DM_REGULATOR
2382 This command is based on driver model regulator's API.
2383 User interface features:
2384 - list - list regulator devices
2385 - regulator dev <id> - show or [set] operating regulator device
2386 - regulator info - print constraints info
2387 - regulator status - print operating status
2388 - regulator value <val] <-f> - print/[set] voltage value [uV]
2389 - regulator current <val> - print/[set] current value [uA]
2390 - regulator mode <id> - print/[set] operating mode id
2391 - regulator enable - enable the regulator output
2392 - regulator disable - disable the regulator output
2394 The '-f' (force) option can be used for set the value which exceeds
2395 the limits, which are found in device-tree and are kept in regulator's
2396 uclass plat structure.
2400 menu "Security commands"
2402 bool "Enable the 'aes' command"
2405 This provides a means to encrypt and decrypt data using the AES
2406 (Advanced Encryption Standard). This algorithm uses a symetric key
2407 and is widely used as a streaming cipher. Different key lengths are
2408 supported by the algorithm but this command only supports 128 bits
2412 bool "Enable the 'blob' command"
2413 depends on !MX6ULL && !MX6SLL && !MX6SL
2414 select IMX_HAB if ARCH_MX6 || ARCH_MX7 || ARCH_MX7ULP || ARCH_IMX8M
2416 This is used with the Freescale secure boot mechanism.
2418 Freescale's SEC block has built-in Blob Protocol which provides
2419 a method for protecting user-defined data across system power
2420 cycles. SEC block protects data in a data structure called a Blob,
2421 which provides both confidentiality and integrity protection.
2423 Encapsulating data as a blob
2424 Each time that the Blob Protocol is used to protect data, a
2425 different randomly generated key is used to encrypt the data.
2426 This random key is itself encrypted using a key which is derived
2427 from SoC's non-volatile secret key and a 16 bit Key identifier.
2428 The resulting encrypted key along with encrypted data is called a
2429 blob. The non-volatile secure key is available for use only during
2432 During decapsulation, the reverse process is performed to get back
2436 blob enc - encapsulating data as a cryptgraphic blob
2437 blob dec - decapsulating cryptgraphic blob to get the data
2441 blob enc src dst len km
2443 Encapsulate and create blob of data $len bytes long
2444 at address $src and store the result at address $dst.
2445 $km is the 16 byte key modifier is also required for
2446 generation/use as key for cryptographic operation. Key
2447 modifier should be 16 byte long.
2449 blob dec src dst len km
2451 Decapsulate the blob of data at address $src and
2452 store result of $len byte at addr $dst.
2453 $km is the 16 byte key modifier is also required for
2454 generation/use as key for cryptographic operation. Key
2455 modifier should be 16 byte long.
2458 bool "Support 'hash' command"
2461 This provides a way to hash data in memory using various supported
2462 algorithms (such as SHA1, MD5, CRC32). The computed digest can be
2463 saved to memory or to an environment variable. It is also possible
2464 to verify a hash against data in memory.
2467 bool "Support the 'hvc' command"
2468 depends on ARM_SMCCC
2470 Allows issuing Hypervisor Calls (HVCs). Mostly useful for
2471 development and testing.
2474 bool "Support the 'smc' command"
2475 depends on ARM_SMCCC
2477 Allows issuing Secure Monitor Calls (SMCs). Mostly useful for
2478 development and testing.
2484 Add -v option to verify data against a hash.
2487 bool "scp03 - SCP03 enable and rotate/provision operations"
2490 This command provides access to a Trusted Application
2491 running in a TEE to request Secure Channel Protocol 03
2492 (SCP03) enablement and/or rotation of its SCP03 keys.
2501 bool "Enable the 'tpm' command"
2502 depends on TPM_V1 || TPM_V2
2503 select CMD_TPM_V1 if TPM_V1
2504 select CMD_TPM_V2 if TPM_V2
2506 This provides a means to talk to a TPM from the command line. A wide
2507 range of commands if provided - see 'tpm help' for details. The
2508 command requires a suitable TPM on your board and the correct driver
2514 bool "Enable the 'tpm test' command"
2517 This provides a a series of tests to confirm that the TPMv1.x is
2518 working correctly. The tests cover initialisation, non-volatile RAM,
2519 extend, global lock and checking that timing is within expectations.
2520 The tests pass correctly on Infineon TPMs but may need to be adjusted
2527 menu "Firmware commands"
2529 bool "Enable crosec command"
2533 Enable command-line access to the Chrome OS EC (Embedded
2534 Controller). This provides the 'crosec' command which has
2535 a number of sub-commands for performing EC tasks such as
2536 updating its flash, accessing a small saved context area
2537 and talking to the I2C bus behind the EC (if there is one).
2540 menu "Filesystem commands"
2542 bool "Enable the 'btrsubvol' command"
2545 This enables the 'btrsubvol' command to list subvolumes
2546 of a BTRFS filesystem. There are no special commands for
2547 listing BTRFS directories or loading BTRFS files - this
2548 can be done by the generic 'fs' commands (see CMD_FS_GENERIC)
2549 when BTRFS is enabled (see FS_BTRFS).
2552 bool "Enable the 'cbfs' command"
2555 Define this to enable support for reading from a Coreboot
2556 filesystem. This is a ROM-based filesystem used for accessing files
2557 on systems that use coreboot as the first boot-loader and then load
2558 U-Boot to actually boot the Operating System. Available commands are
2559 cbfsinit, cbfsinfo, cbfsls and cbfsload.
2562 bool "Enable the 'cramfs' command"
2563 depends on FS_CRAMFS
2565 This provides commands for dealing with CRAMFS (Compressed ROM
2566 filesystem). CRAMFS is useful when space is tight since files are
2567 compressed. Two commands are provided:
2569 cramfsls - lists files in a cramfs image
2570 cramfsload - loads a file from a cramfs image
2573 bool "EROFS command support"
2576 Support for the EROFS fs
2579 bool "ext2 command support"
2582 Enables EXT2 FS command
2585 bool "ext4 command support"
2588 Enables EXT4 FS command
2590 config CMD_EXT4_WRITE
2592 bool "ext4 write command support"
2595 Enables EXT4 FS write command
2598 bool "FAT command support"
2601 Support for the FAT fs
2604 bool "SquashFS command support"
2607 Enables SquashFS filesystem commands (e.g. load, ls).
2609 config CMD_FS_GENERIC
2610 bool "filesystem commands"
2612 Enables filesystem commands (e.g. load, ls) that work for multiple
2616 bool "fsuuid command"
2618 Enables fsuuid command for filesystem UUID.
2621 bool "jffs2 command"
2624 Enables commands to support the JFFS2 (Journalling Flash File System
2625 version 2) filesystem. This enables fsload, ls and fsinfo which
2626 provide the ability to load files, list directories and obtain
2627 filesystem information.
2630 string "Default device for JFFS2"
2631 depends on CMD_JFFS2
2634 The default device to use with the jffs2 command.
2636 config JFFS2_PART_OFFSET
2637 hex "Default offset within flash to locate the JFFS2 image"
2638 depends on CMD_JFFS2
2641 The default offset within flash to locate the JFFS2 image.
2643 config JFFS2_PART_SIZE
2644 hex "Default size of JFFS2 partition"
2645 depends on CMD_JFFS2
2648 The default size of the JFFS2 partition
2651 bool "MTD partition support"
2654 MTD partitioning tool support.
2655 It is strongly encouraged to avoid using this command
2656 anymore along with 'sf', 'nand', 'onenand'. One can still
2657 declare the partitions in the mtdparts environment variable
2658 but better use the MTD stack and the 'mtd' command instead.
2660 config CMD_MTDPARTS_SPREAD
2661 bool "Padd partition size to take account of bad blocks"
2662 depends on CMD_MTDPARTS
2664 This enables the 'spread' sub-command of the mtdparts command.
2665 This command will modify the existing mtdparts variable by increasing
2666 the size of the partitions such that 1) each partition's net size is
2667 at least as large as the size specified in the mtdparts variable and
2668 2) each partition starts on a good block.
2670 config CMD_MTDPARTS_SHOW_NET_SIZES
2671 bool "Show net size (w/o bad blocks) of partitions"
2672 depends on CMD_MTDPARTS
2674 Adds two columns to the printed partition table showing the
2675 effective usable size of a partition, if bad blocks are taken
2678 config MTDIDS_DEFAULT
2679 string "Default MTD IDs"
2680 depends on MTD || SPI_FLASH
2681 depends on !SYS_MTDPARTS_RUNTIME
2683 Defines a default MTD IDs list for use with MTD partitions in the
2684 Linux MTD command line partitions format.
2686 config MTDPARTS_DEFAULT
2687 string "Default MTD partition scheme"
2688 depends on MTD || SPI_FLASH
2689 depends on !SYS_MTDPARTS_RUNTIME
2691 Defines a default MTD partitioning scheme in the Linux MTD command
2692 line partitions format
2695 bool "reiser - Access to reiserfs filesystems"
2697 This provides two commands which operate on a resierfs filesystem,
2698 commonly used some years ago:
2700 reiserls - list files
2701 reiserload - load a file
2704 bool "yaffs2 - Access of YAFFS2 filesystem"
2708 This provides commands for accessing a YAFFS2 filesystem. Yet
2709 Another Flash Filesystem 2 is a filesystem designed specifically
2710 for NAND flash. It incorporates bad-block management and ensures
2711 that device writes are sequential regardless of filesystem
2715 bool "zfs - Access of ZFS filesystem"
2717 This provides commands to accessing a ZFS filesystem, commonly used
2718 on Solaris systems. Two sub-commands are provided:
2720 zfsls - list files in a directory
2721 zfsload - load a file
2723 See doc/README.zfs for more details.
2727 menu "Debug commands"
2729 config CMD_CBSYSINFO
2732 default y if SYS_COREBOOT
2734 This provides information about the coreboot sysinfo table stored in
2735 memory by coreboot before jumping to U-Boot. It can be useful for
2736 debugging the beaaviour of coreboot or U-Boot.
2739 bool "cyclic - Show information about cyclic functions"
2743 This enables the 'cyclic' command which provides information about
2744 cyclic execution functions. This infrastructure allows registering
2745 functions to be executed cyclically, e.g. every 100ms. These commands
2748 cyclic list - list cyclic functions
2749 cyclic cyclic demo <cycletime_ms> <delay_us> - register cyclic
2752 See doc/develop/cyclic.rst for more details.
2755 bool "diag - Board diagnostics"
2757 This command provides access to board diagnostic tests. These are
2758 called Power-on Self Tests (POST). The command allows listing of
2759 available tests and running either all the tests, or specific tests
2763 bool "event - Show information about events"
2765 default y if EVENT_DEBUG
2767 This enables the 'event' command which provides information about
2768 events and event-handler routines. This can help to device event
2772 bool "irq - Show information about interrupts"
2773 depends on !ARM && !MIPS && !RISCV && !SH
2775 This enables two commands:
2777 interrupts - enable or disable interrupts
2778 irqinfo - print device-specific interrupt information
2781 bool "kgdb - Allow debugging of U-Boot with gdb"
2784 This enables a 'kgdb' command which allows gdb to connect to U-Boot
2785 over a serial link for debugging purposes. This allows
2786 single-stepping, inspecting variables, etc. This is supported only
2787 on PowerPC at present.
2790 bool "log - Generation, control and access to logging"
2794 This provides access to logging features. It allows the output of
2795 log data to be controlled to a limited extent (setting up the default
2796 maximum log level for emitting of records). It also provides access
2797 to a command used for testing the log system.
2800 bool "trace - Support tracing of function calls and timing"
2804 Enables a command to control using of function tracing within
2805 U-Boot. This allows recording of call traces including timing
2806 information. The command can write data to memory for exporting
2807 for analysis (e.g. using bootchart). See doc/README.trace for full
2811 bool "avb - Android Verified Boot 2.0 operations"
2812 depends on AVB_VERIFY
2814 Enables a "avb" command to perform verification of partitions using
2815 Android Verified Boot 2.0 functionality. It includes such subcommands:
2816 avb init - initialize avb2 subsystem
2817 avb read_rb - read rollback index
2818 avb write_rb - write rollback index
2819 avb is_unlocked - check device lock state
2820 avb get_uuid - read and print uuid of a partition
2821 avb read_part - read data from partition
2822 avb read_part_hex - read data from partition and output to stdout
2823 avb write_part - write data to partition
2824 avb verify - run full verification chain
2826 config CMD_STACKPROTECTOR_TEST
2827 bool "Test command for stack protector"
2828 depends on STACKPROTECTOR
2830 Enable stackprot_test command
2831 The stackprot_test command will force a stack overrun to test
2832 the stack smashing detection mechanisms.
2837 tristate "Enable UBI - Unsorted block images commands"
2840 UBI is a software layer above MTD layer which admits use of LVM-like
2841 logical volumes on top of MTD devices, hides some complexities of
2842 flash chips like wear and bad blocks and provides some other useful
2843 capabilities. Please, consult the MTD web site for more details
2844 (www.linux-mtd.infradead.org). Activate this option if you want
2845 to use U-Boot UBI commands.
2846 It is also strongly encouraged to also enable CONFIG_MTD to get full
2849 config CMD_UBI_RENAME
2850 bool "Enable rename"
2853 Enable a "ubi" command to rename ubi volume:
2854 ubi rename <oldname> <newname>
2857 tristate "Enable UBIFS - Unsorted block images filesystem commands"
2859 default y if CMD_UBI
2863 UBIFS is a file system for flash devices which works on top of UBI.
2865 config MMC_SPEED_MODE_SET
2866 bool "set speed mode using mmc command"
2870 Enable setting speed mode using mmc rescan and mmc dev commands.
2871 The speed mode is provided as the last argument in these commands
2872 and is indicated using the index from enum bus_mode in
2873 include/mmc.h. A speed mode can be set only if it has already
2874 been enabled in the device tree.
2877 bool "Amlogic Meson commands"
2878 depends on ARCH_MESON
2881 Enable useful commands for the Meson Soc family developed by Amlogic Inc.
projects / J-u-boot.git / blob