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.
30 This string is displayed in the command line to the left of the
33 menu "Autoboot options"
39 This enables the autoboot. See doc/README.autoboot for detail.
42 bool "Stop autobooting via specific input key / string"
45 This option enables stopping (aborting) of the automatic
46 boot feature only by issuing a specific input key or
47 string. If not enabled, any input key will abort the
48 U-Boot automatic booting process and bring the device
49 to the U-Boot prompt for user input.
51 config AUTOBOOT_PROMPT
52 string "Autoboot stop prompt"
53 depends on AUTOBOOT_KEYED
54 default "Autoboot in %d seconds\\n"
56 This string is displayed before the boot delay selected by
57 CONFIG_BOOTDELAY starts. If it is not defined there is no
58 output indicating that autoboot is in progress.
60 Note that this define is used as the (only) argument to a
61 printf() call, so it may contain '%' format specifications,
62 provided that it also includes, sepearated by commas exactly
63 like in a printf statement, the required arguments. It is
64 the responsibility of the user to select only such arguments
65 that are valid in the given context.
67 config AUTOBOOT_ENCRYPTION
68 bool "Enable encryption in autoboot stopping"
69 depends on AUTOBOOT_KEYED
72 config AUTOBOOT_DELAY_STR
73 string "Delay autobooting via specific input key / string"
74 depends on AUTOBOOT_KEYED && !AUTOBOOT_ENCRYPTION
76 This option delays the automatic boot feature by issuing
77 a specific input key or string. If CONFIG_AUTOBOOT_DELAY_STR
78 or the environment variable "bootdelaykey" is specified
79 and this string is received from console input before
80 autoboot starts booting, U-Boot gives a command prompt. The
81 U-Boot prompt will time out if CONFIG_BOOT_RETRY_TIME is
82 used, otherwise it never times out.
84 config AUTOBOOT_STOP_STR
85 string "Stop autobooting via specific input key / string"
86 depends on AUTOBOOT_KEYED && !AUTOBOOT_ENCRYPTION
88 This option enables stopping (aborting) of the automatic
89 boot feature only by issuing a specific input key or
90 string. If CONFIG_AUTOBOOT_STOP_STR or the environment
91 variable "bootstopkey" is specified and this string is
92 received from console input before autoboot starts booting,
93 U-Boot gives a command prompt. The U-Boot prompt never
94 times out, even if CONFIG_BOOT_RETRY_TIME is used.
96 config AUTOBOOT_KEYED_CTRLC
97 bool "Enable Ctrl-C autoboot interruption"
98 depends on AUTOBOOT_KEYED && !AUTOBOOT_ENCRYPTION
101 This option allows for the boot sequence to be interrupted
102 by ctrl-c, in addition to the "bootdelaykey" and "bootstopkey".
103 Setting this variable provides an escape sequence from the
104 limited "password" strings.
106 config AUTOBOOT_STOP_STR_SHA256
107 string "Stop autobooting via SHA256 encrypted password"
108 depends on AUTOBOOT_KEYED && AUTOBOOT_ENCRYPTION
110 This option adds the feature to only stop the autobooting,
111 and therefore boot into the U-Boot prompt, when the input
112 string / password matches a values that is encypted via
113 a SHA256 hash and saved in the environment.
117 source "cmd/fastboot/Kconfig"
137 Print ".config" contents.
139 If this option is enabled, the ".config" file contents are embedded
140 in the U-Boot image and can be printed on the console by the "config"
141 command. This provides information of which options are enabled on
148 Print console devices and information.
153 Print information about available CPUs. This normally shows the
154 number of CPUs, type (e.g. manufacturer, architecture, product or
155 internal name) and clock frequency. Other information may be
156 available depending on the CPU driver.
162 Print GPL license text
178 Run the command stored in the environment "bootcmd", i.e.
179 "bootd" does the same thing as "run bootcmd".
185 Boot an application image from the memory.
190 Boot the Linux zImage
197 Boot an AArch64 Linux Kernel image from memory.
201 depends on EFI_LOADER
204 Boot an EFI image from memory.
206 config CMD_BOOTEFI_HELLO_COMPILE
207 bool "Compile a standard EFI hello world binary for testing"
208 depends on CMD_BOOTEFI && (ARM || X86)
211 This compiles a standard EFI hello world application with U-Boot so
212 that it can be used with the test/py testing framework. This is useful
213 for testing that EFI is working at a basic level, and for bringing
214 up EFI support on a new architecture.
216 No additional space will be required in the resulting U-Boot binary
217 when this option is enabled.
219 config CMD_BOOTEFI_HELLO
220 bool "Allow booting a standard EFI hello world for testing"
221 depends on CMD_BOOTEFI_HELLO_COMPILE
223 This adds a standard EFI hello world application to U-Boot so that
224 it can be used with the 'bootefi hello' command. This is useful
225 for testing that EFI is working at a basic level, and for bringing
226 up EFI support on a new architecture.
228 source lib/efi_selftest/Kconfig
234 Add an ANSI terminal boot menu command.
237 bool "bootelf, bootvx"
240 Boot an ELF/vxWorks image from the memory.
243 bool "Flattened Device Tree utility commands"
247 Do FDT related setup before booting into the Operating System.
253 Start an application at a given address.
259 Run the command in the given environment variable.
265 Print header information for application image.
270 List all images found in flash
276 Extract a part of a multi-image.
281 Poweroff/Shutdown the system
284 bool "spl export - Export boot information for Falcon boot"
287 Falcon mode allows booting directly from SPL into an Operating
288 System such as Linux, thus skipping U-Boot proper. See
289 doc/README.falcon for full information about how to use this
292 config CMD_SPL_NAND_OFS
293 hex "Offset of OS command line args for Falcon-mode NAND boot"
297 This provides the offset of the command line arguments for Linux
298 when booting from NAND in Falcon mode. See doc/README.falcon
299 for full information about how to use this option (and also see
300 board/gateworks/gw_ventana/README for an example).
302 config CMD_SPL_WRITE_SIZE
303 hex "Size of argument area"
307 This provides the size of the command-line argument area in NAND
308 flash used by Falcon-mode boot. See the documentation until CMD_SPL
311 config CMD_THOR_DOWNLOAD
312 bool "thor - TIZEN 'thor' download"
314 Implements the 'thor' download protocol. This is a way of
315 downloading a software update over USB from an attached host.
316 There is no documentation about this within the U-Boot source code
317 but you should be able to find something on the interwebs.
320 bool "zboot - x86 boot command"
322 With x86 machines it is common to boot a bzImage file which
323 contains both a kernel and a setup.bin file. The latter includes
324 configuration information from the dark ages which x86 boards still
325 need to pick things out of.
327 Consider using FIT in preference to this since it supports directly
328 booting both 32- and 64-bit kernels, as well as secure boot.
329 Documentation is available in doc/uImage.FIT/x86-fit-boot.txt
333 menu "Environment commands"
336 bool "ask for env variable"
338 Ask for environment variable
356 Edit environment variable.
361 Allow for searching environment variables
367 Save all environment variables into the compiled-in persistent
370 config CMD_ENV_EXISTS
374 Check if a variable is defined in the environment for use in
377 config CMD_ENV_CALLBACK
378 bool "env callbacks - print callbacks and their associated variables"
380 Some environment variable have callbacks defined by
381 U_BOOT_ENV_CALLBACK. These are called when the variable changes.
382 For example changing "baudrate" adjust the serial baud rate. This
383 command lists the currently defined callbacks.
386 bool "env flags -print variables that have non-default flags"
388 Some environment variables have special flags that control their
389 behaviour. For example, serial# can only be written once and cannot
390 be deleted. This command shows the variables that have special
395 menu "Memory commands"
400 default n if ARCH_SUNXI
409 Add -v option to verify data against a crc32 checksum.
412 bool "eeprom - EEPROM subsystem"
414 (deprecated, needs conversion to driver model)
415 Provides commands to read and write EEPROM (Electrically Erasable
416 Programmable Read Only Memory) chips that are connected over an
419 config CMD_EEPROM_LAYOUT
420 bool "Enable layout-aware eeprom commands"
421 depends on CMD_EEPROM
423 (deprecated, needs conversion to driver model)
424 When enabled, additional eeprom sub-commands become available.
426 eeprom print - prints the contents of the eeprom in a human-readable
427 way (eeprom layout fields, and data formatted to be fit for human
430 eeprom update - allows user to update eeprom fields by specifying
431 the field name, and providing the new data in a human readable format
432 (same format as displayed by the eeprom print command).
434 Both commands can either auto detect the layout, or be told which
438 __weak int parse_layout_version(char *str)
439 - override to provide your own layout name parsing
440 __weak void __eeprom_layout_assign(struct eeprom_layout *layout,
442 - override to setup the layout metadata based on the version
443 __weak int eeprom_layout_detect(unsigned char *data)
444 - override to provide your own algorithm for detecting layout
447 - contains various printing and updating functions for common
448 types of eeprom fields. Can be used for defining
451 config EEPROM_LAYOUT_HELP_STRING
452 string "Tells user what layout names are supported"
453 depends on CMD_EEPROM_LAYOUT
454 default "<not defined>"
456 Help printed with the LAYOUT VERSIONS part of the 'eeprom'
462 Infinite write loop on address range
469 Compute MD5 checksum.
474 depends on CMD_MD5SUM
476 Add -v option to verify data against an MD5 checksum.
481 Display memory information.
484 bool "md, mm, nm, mw, cp, cmp, base, loop"
489 mm - memory modify (auto-incrementing address)
490 nm - memory modify (constant address)
491 mw - memory write (fill)
494 base - print or set address offset
495 loop - initialize loop on address range
500 Simple RAM read/write test.
505 mdc - memory display cyclic
506 mwc - memory write cyclic
512 Compute SHA1 checksum.
514 config SHA1SUM_VERIFY
516 depends on CMD_SHA1SUM
518 Add -v option to verify data against a SHA1 checksum.
521 bool "strings - display strings in memory"
523 This works similarly to the Unix 'strings' command except that it
524 works with a memory range. String of printable characters found
525 within the range are displayed. The minimum number of characters
526 for a sequence to be considered a string can be provided.
530 menu "Compression commands"
534 default y if CMD_BOOTI
537 Support decompressing an LZMA (Lempel-Ziv-Markov chain algorithm)
542 default n if ARCH_SUNXI
543 default y if CMD_BOOTI
545 Uncompress a zip-compressed memory region.
550 Compress a memory region with zlib deflate method.
554 menu "Device access commands"
557 #depends on FLASH_CFI_DRIVER
560 ARM Ltd reference designs flash partition access
563 bool "clk - Show clock frequencies"
566 Shows clock frequences by calling a sock_clk_dump() hook function.
567 This is depreated in favour of using the CLK uclass and accessing
568 clock values from associated drivers. However currently no command
572 bool "demo - Demonstration commands for driver model"
575 Provides a 'demo' command which can be used to play around with
576 driver model. To use this properly you will need to enable one or
577 both of the demo devices (DM_DEMO_SHAPE and DM_DEMO_SIMPLE).
578 Otherwise you will always get an empty list of devices. The demo
579 devices are defined in the sandbox device tree, so the easiest
580 option is to use sandbox and pass the -d point to sandbox's
585 select USB_FUNCTION_DFU
587 Enables the command "dfu" which is used to have U-Boot create a DFU
588 class device via USB. This command requires that the "dfu_alt_info"
589 environment variable be set and define the alt settings to expose to
593 bool "dm - Access to driver model information"
597 Provides access to driver model data structures and information,
598 such as a list of devices, list of uclasses and the state of each
599 device (e.g. activated). This is not required for operation, but
600 can be useful to see the state of driver model for debugging or
604 bool "fdcboot - Boot from floppy device"
606 The 'fdtboot' command allows booting an image from a floppy disk.
609 bool "flinfo, erase, protect"
613 flinfo - print FLASH memory information
615 protect - enable or disable FLASH write protection
623 config CMD_FPGA_LOADBP
624 bool "fpga loadbp - load partial bitstream (Xilinx only)"
627 Supports loading an FPGA device from a bitstream buffer containing
630 config CMD_FPGA_LOADFS
631 bool "fpga loadfs - load bitstream from FAT filesystem (Xilinx only)"
634 Supports loading an FPGA device from a FAT filesystem.
636 config CMD_FPGA_LOADMK
637 bool "fpga loadmk - load bitstream from image"
640 Supports loading an FPGA device from a image generated by mkimage.
642 config CMD_FPGA_LOADP
643 bool "fpga loadp - load partial bitstream"
646 Supports loading an FPGA device from a bitstream buffer containing
650 bool "fpgad - dump FPGA registers"
652 (legacy, needs conversion to driver model)
653 Provides a way to dump FPGA registers by calling the board-specific
654 fpga_get_reg() function. This functions similarly to the 'md'
658 bool "fuse - support for the fuse subssystem"
660 (deprecated - needs conversion to driver model)
661 This allows reading, sensing, programming or overriding fuses
662 which control the behaviour of the device. The command uses the
671 bool "GPT (GUID Partition Table) command"
672 select PARTITION_UUIDS
676 Enable the 'gpt' command to ready and write GPT style partition
680 bool "GPT Random UUID generation"
682 Enable the generation of partitions with random UUIDs if none
685 config CMD_GPT_RENAME
686 bool "GPT partition renaming commands"
689 Enables the 'gpt' command to interchange names on two GPT
690 partitions via the 'gpt swap' command or to rename single
691 partitions via the 'rename' command.
694 bool "ide - Support for IDE drivers"
697 Provides an 'ide' command which allows accessing the IDE drive,
698 reseting the IDE interface, printing the partition table and
699 geting device info. It also enables the 'diskboot' command which
700 permits booting from an IDE drive.
703 bool "io - Support for performing I/O accesses"
705 Provides an 'iod' command to display I/O space and an 'iow' command
706 to write values to the I/O space. This can be useful for manually
707 checking the state of devices during boot when debugging device
711 bool "iotrace - Support for tracing I/O activity"
713 Provides an 'iotrace' command which supports recording I/O reads and
714 writes in a trace buffer in memory . It also maintains a checksum
715 of the trace records (even if space is exhausted) so that the
716 sequence of I/O accesses can be verified.
718 When debugging drivers it is useful to see what I/O accesses were
719 done and in what order.
721 Even if the individual accesses are of little interest it can be
722 useful to verify that the access pattern is consistent each time
723 an operation is performed. In this case a checksum can be used to
724 characterise the operation of a driver. The checksum can be compared
725 across different runs of the operation to verify that the driver is
728 In particular, when performing major refactoring of the driver, where
729 the access pattern should not change, the checksum provides assurance
730 that the refactoring work has not broken the driver.
732 This works by sneaking into the io.h heder for an architecture and
733 redirecting I/O accesses through iotrace's tracing mechanism.
735 For now no commands are provided to examine the trace buffer. The
736 format is fairly simple, so 'md' is a reasonable substitute.
738 Note: The checksum feature is only useful for I/O regions where the
739 contents do not change outside of software control. Where this is not
740 suitable you can fall back to manually comparing the addresses. It
741 might be useful to enhance tracing to only checksum the accesses and
742 not the data read/written.
751 default n if ARCH_SUNXI
754 Load a binary file over serial line.
758 default n if ARCH_SUNXI
761 Load an S-Record file over serial line
766 MMC memory mapped support.
770 default y if NAND_SUNXI
775 config CMD_NAND_TRIMFFS
776 bool "nand write.trimffs"
777 default y if ARCH_SUNXI
779 Allows one to skip empty pages when flashing something on a NAND.
781 config CMD_NAND_LOCK_UNLOCK
782 bool "nand lock/unlock"
784 NAND locking support.
786 config CMD_NAND_TORTURE
789 NAND torture support.
798 NVM Express device support
801 bool "mmc_spi - Set up MMC SPI device"
803 Provides a way to set up an MMC (Multimedia Card) SPI (Serial
804 Peripheral Interface) device. The device provides a means of
805 accessing an MMC device via SPI using a single data line, limited
806 to 20MHz. It is useful since it reduces the amount of protocol code
810 bool "onenand - access to onenand device"
812 OneNAND is a brand of NAND ('Not AND' gate) flash which provides
813 various useful features. This command allows reading, writing,
814 and erasing blocks. It allso provides a way to show and change
815 bad blocks, and test the device.
819 select PARTITION_UUIDS
821 Read and display information about the partition table on
825 bool "pci - Access PCI devices"
827 Provide access to PCI (Peripheral Interconnect Bus), a type of bus
828 used on some devices to allow the CPU to communicate with its
829 peripherals. Sub-commands allow bus enumeration, displaying and
830 changing configuration space and a few other features.
833 bool "pinit - Set up PCMCIA device"
835 Provides a means to initialise a PCMCIA (Personal Computer Memory
836 Card International Association) device. This is an old standard from
837 about 1990. These devices are typically removable memory or network
838 cards using a standard 68-pin connector.
841 bool "read - Read binary data from a partition"
843 Provides low-level access to the data in a partition.
845 config CMD_REMOTEPROC
847 depends on REMOTEPROC
849 Support for Remote Processor control
852 bool "sata - Access SATA subsystem"
855 SATA (Serial Advanced Technology Attachment) is a serial bus
856 standard for connecting to hard drives and other storage devices.
857 This command provides information about attached devices and allows
858 reading, writing and other operations.
860 SATA replaces PATA (originally just ATA), which stands for Parallel AT
861 Attachment, where AT refers to an IBM AT (Advanced Technology)
862 computer released in 1984.
865 bool "saves - Save a file over serial in S-Record format"
867 Provides a way to save a binary file using the Motorola S-Record
868 format over the serial line.
871 bool "sdram - Print SDRAM configuration information"
873 Provides information about attached SDRAM. This assumed that the
874 SDRAM has an EEPROM with information that can be read using the
875 I2C bus. This is only available on some boards.
883 bool "sf test - Allow testing of SPI flash"
885 Provides a way to test that SPI flash is working correctly. The
886 test is destructive, in that an area of SPI flash must be provided
887 for the test to use. Performance information is also provided,
888 measuring the performance of reading, writing and erasing in
889 Mbps (Million Bits Per Second). This value should approximately
890 equal the SPI bus speed for a single-bit-wide SPI bus, assuming
891 everything is working properly.
899 bool "tsi148 - Command to access tsi148 device"
901 This provides various sub-commands to initialise and configure the
902 Turndra tsi148 device. See the command help for full details.
905 bool "universe - Command to set up the Turndra Universe controller"
907 This allows setting up the VMEbus provided by this controller.
908 See the command help for full details.
917 select USB_FUNCTION_SDP
919 Enables the command "sdp" which is used to have U-Boot emulating the
920 Serial Download Protocol (SDP) via USB.
923 depends on USB_FUNCTION_ROCKUSB
925 Rockusb protocol is widely used by Rockchip SoC based devices. It can
926 read/write info, image to/from devices. This enable rockusb command
927 support to communication with rockusb device. for more detail about
928 this command, please read doc/README.rockusb.
930 config CMD_USB_MASS_STORAGE
931 bool "UMS usb mass storage"
932 select USB_FUNCTION_MASS_STORAGE
934 USB mass storage support
939 menu "Shell scripting commands"
951 Return true/false on integer compare.
957 Run script from memory
963 Evaluate boolean and math expressions and store the result in an env
965 Also supports loading the value at a memory location into a variable.
966 If CONFIG_REGEX is enabled, setexpr also supports a gsub function.
970 menu "Network commands"
973 bool "bootp, tftpboot"
978 bootp - boot image via network using BOOTP/TFTP protocol
979 tftpboot - boot image via network using TFTP protocol
984 TFTP put command, for uploading files to a server
989 Act as a TFTP server and boot the first received file
994 Boot image via network using RARP/TFTP protocol
999 Boot image via network using DHCP/TFTP protocol
1005 Boot image via network using PXE protocol
1011 Boot image via network using NFS protocol.
1016 Enable MII utility commands.
1021 Send ICMP ECHO_REQUEST to network host
1026 Perform CDP network configuration
1031 Synchronize RTC via network
1036 Lookup the IP of a hostname
1038 config CMD_LINK_LOCAL
1041 Acquire a network IP address using the link-local protocol
1046 Allow control of L2 Ethernet switch commands. These are supported
1047 by the vsc9953 Ethernet driver at present. Sub-commands allow
1048 operations such as enabling / disabling a port and
1049 viewing/maintaining the filtering database (FDB)
1053 menu "Misc commands"
1056 bool "Enable 'bmp' command"
1057 depends on LCD || DM_VIDEO || VIDEO
1059 This provides a way to obtain information about a BMP-format iamge
1060 and to display it. BMP (which presumably stands for BitMaP) is a
1061 file format defined by Microsoft which supports images of various
1062 depths, formats and compression methods. Headers on the file
1063 determine the formats used. This command can be used by first loading
1064 the image into RAM, then using this command to look at it or display
1068 bool "Enable board-specific commands"
1070 (deprecated: instead, please define a Kconfig option for each command)
1072 Some boards have board-specific commands which are only enabled
1073 during developemnt and need to be turned off for production. This
1074 option provides a way to control this. The commands that are enabled
1075 vary depending on the board.
1077 config CMD_BKOPS_ENABLE
1078 bool "mmc bkops enable"
1082 Enable command for setting manual background operations handshake
1083 on a eMMC device. The feature is optionally available on eMMC devices
1084 conforming to standard >= 4.41.
1086 config CMD_BLOCK_CACHE
1087 bool "blkcache - control and stats for block cache"
1088 depends on BLOCK_CACHE
1089 default y if BLOCK_CACHE
1091 Enable the blkcache command, which can be used to control the
1092 operation of the cache functions.
1093 This is most useful when fine-tuning the operation of the cache
1094 during development, but also allows the cache to be disabled when
1095 it might hurt performance (e.g. when using the ums command).
1098 bool "icache or dcache"
1100 Enable the "icache" and "dcache" commands
1103 bool "Enable the 'display' command, for character displays"
1105 (this needs porting to driver model)
1106 This enables the 'display' command which allows a string to be
1107 displayed on a simple board-specific display. Implement
1108 display_putc() to use it.
1114 Enable the 'led' command which allows for control of LEDs supported
1115 by the board. The LEDs can be listed with 'led list' and controlled
1116 with led on/off/togle/blink. Any LED drivers can be controlled with
1117 this command, e.g. led_gpio.
1123 Enable the 'date' command for getting/setting the time/date in RTC
1129 Run commands and summarize execution time.
1132 bool "gettime - read elapsed time"
1134 Enable the 'gettime' command which reads the elapsed time since
1135 U-Boot started running. This shows the time in seconds and
1136 milliseconds. See also the 'bootstage' command which provides more
1137 flexibility for boot timing.
1139 # TODO: rename to CMD_SLEEP
1142 default n if ARCH_SUNXI
1145 Delay execution for some time
1150 Access the system timer.
1156 This provides basic access to the U-Boot's sound support. The main
1157 feature is to play a beep.
1159 sound init - set up sound system
1160 sound play - play a sound
1166 This provides access to the QEMU firmware interface. The main
1167 feature is to allow easy loading of files passed to qemu-system
1168 via -kernel / -initrd
1170 source "cmd/mvebu/Kconfig"
1173 bool "terminal - provides a way to attach a serial terminal"
1175 Provides a 'cu'-like serial terminal command. This can be used to
1176 access other serial ports from the system console. The terminal
1177 is very simple with no special processing of characters. As with
1178 cu, you can press ~. (tilde followed by period) to exit.
1181 bool "uuid, guid - generation of unique IDs"
1183 This enables two commands:
1185 uuid - generate random Universally Unique Identifier
1186 guid - generate Globally Unique Identifier based on random UUID
1188 The two commands are very similar except for the endianness of the
1193 source "cmd/ti/Kconfig"
1195 config CMD_BOOTSTAGE
1196 bool "Enable the 'bootstage' command"
1197 depends on BOOTSTAGE
1199 Add a 'bootstage' command which supports printing a report
1200 and un/stashing of bootstage data.
1202 menu "Power commands"
1204 bool "Enable Driver Model PMIC command"
1207 This is the pmic command, based on a driver model pmic's API.
1208 Command features are unchanged:
1209 - list - list pmic devices
1210 - pmic dev <id> - show or [set] operating pmic device (NEW)
1211 - pmic dump - dump registers
1212 - pmic read address - read byte of register at address
1213 - pmic write address - write byte to register at address
1214 The only one change for this command is 'dev' subcommand.
1216 config CMD_REGULATOR
1217 bool "Enable Driver Model REGULATOR command"
1218 depends on DM_REGULATOR
1220 This command is based on driver model regulator's API.
1221 User interface features:
1222 - list - list regulator devices
1223 - regulator dev <id> - show or [set] operating regulator device
1224 - regulator info - print constraints info
1225 - regulator status - print operating status
1226 - regulator value <val] <-f> - print/[set] voltage value [uV]
1227 - regulator current <val> - print/[set] current value [uA]
1228 - regulator mode <id> - print/[set] operating mode id
1229 - regulator enable - enable the regulator output
1230 - regulator disable - disable the regulator output
1232 The '-f' (force) option can be used for set the value which exceeds
1233 the limits, which are found in device-tree and are kept in regulator's
1234 uclass platdata structure.
1238 menu "Security commands"
1240 bool "Enable the 'aes' command"
1243 This provides a means to encrypt and decrypt data using the AES
1244 (Advanced Encryption Standard). This algorithm uses a symetric key
1245 and is widely used as a streaming cipher. Different key lengths are
1246 supported by the algorithm but this command only supports 128 bits
1250 bool "Enable the 'blob' command"
1252 This is used with the Freescale secure boot mechanism.
1254 Freescale's SEC block has built-in Blob Protocol which provides
1255 a method for protecting user-defined data across system power
1256 cycles. SEC block protects data in a data structure called a Blob,
1257 which provides both confidentiality and integrity protection.
1259 Encapsulating data as a blob
1260 Each time that the Blob Protocol is used to protect data, a
1261 different randomly generated key is used to encrypt the data.
1262 This random key is itself encrypted using a key which is derived
1263 from SoC's non-volatile secret key and a 16 bit Key identifier.
1264 The resulting encrypted key along with encrypted data is called a
1265 blob. The non-volatile secure key is available for use only during
1268 During decapsulation, the reverse process is performed to get back
1272 blob enc - encapsulating data as a cryptgraphic blob
1273 blob dec - decapsulating cryptgraphic blob to get the data
1277 blob enc src dst len km
1279 Encapsulate and create blob of data $len bytes long
1280 at address $src and store the result at address $dst.
1281 $km is the 16 byte key modifier is also required for
1282 generation/use as key for cryptographic operation. Key
1283 modifier should be 16 byte long.
1285 blob dec src dst len km
1287 Decapsulate the blob of data at address $src and
1288 store result of $len byte at addr $dst.
1289 $km is the 16 byte key modifier is also required for
1290 generation/use as key for cryptographic operation. Key
1291 modifier should be 16 byte long.
1294 bool "Support 'hash' command"
1297 This provides a way to hash data in memory using various supported
1298 algorithms (such as SHA1, MD5, CRC32). The computed digest can be
1299 saved to memory or to an environment variable. It is also possible
1300 to verify a hash against data in memory.
1306 Add -v option to verify data against a hash.
1309 bool "Enable the 'tpm' command"
1312 This provides a means to talk to a TPM from the command line. A wide
1313 range of commands if provided - see 'tpm help' for details. The
1314 command requires a suitable TPM on your board and the correct driver
1318 bool "Enable the 'tpm test' command"
1321 This provides a a series of tests to confirm that the TPM is working
1322 correctly. The tests cover initialisation, non-volatile RAM, extend,
1323 global lock and checking that timing is within expectations. The
1324 tests pass correctly on Infineon TPMs but may need to be adjusted
1329 menu "Firmware commands"
1331 bool "Enable crosec command"
1335 Enable command-line access to the Chrome OS EC (Embedded
1336 Controller). This provides the 'crosec' command which has
1337 a number of sub-commands for performing EC tasks such as
1338 updating its flash, accessing a small saved context area
1339 and talking to the I2C bus behind the EC (if there is one).
1342 menu "Filesystem commands"
1344 bool "Enable the 'btrsubvol' command"
1347 This enables the 'btrsubvol' command to list subvolumes
1348 of a BTRFS filesystem. There are no special commands for
1349 listing BTRFS directories or loading BTRFS files - this
1350 can be done by the generic 'fs' commands (see CMD_FS_GENERIC)
1351 when BTRFS is enabled (see FS_BTRFS).
1354 bool "Enable the 'cbfs' command"
1357 Define this to enable support for reading from a Coreboot
1358 filesystem. This is a ROM-based filesystem used for accessing files
1359 on systems that use coreboot as the first boot-loader and then load
1360 U-Boot to actually boot the Operating System. Available commands are
1361 cbfsinit, cbfsinfo, cbfsls and cbfsload.
1364 bool "Enable the 'cramfs' command"
1365 depends on FS_CRAMFS
1367 This provides commands for dealing with CRAMFS (Compressed ROM
1368 filesystem). CRAMFS is useful when space is tight since files are
1369 compressed. Two commands are provided:
1371 cramfsls - lists files in a cramfs image
1372 cramfsload - loads a file from a cramfs image
1375 bool "ext2 command support"
1378 Enables EXT2 FS command
1381 bool "ext4 command support"
1384 Enables EXT4 FS command
1386 config CMD_EXT4_WRITE
1388 bool "ext4 write command support"
1391 Enables EXT4 FS write command
1394 bool "FAT command support"
1397 Support for the FAT fs
1399 config CMD_FS_GENERIC
1400 bool "filesystem commands"
1402 Enables filesystem commands (e.g. load, ls) that work for multiple
1406 bool "fsuuid command"
1408 Enables fsuuid command for filesystem UUID.
1411 bool "jffs2 command"
1414 Enables commands to support the JFFS2 (Journalling Flash File System
1415 version 2) filesystem. This enables fsload, ls and fsinfo which
1416 provide the ability to load files, list directories and obtain
1417 filesystem information.
1420 bool "MTD partition support"
1422 MTD partition support
1424 config MTDIDS_DEFAULT
1425 string "Default MTD IDs"
1426 depends on CMD_MTDPARTS || CMD_NAND || CMD_FLASH
1428 Defines a default MTD IDs list for use with MTD partitions in the
1429 Linux MTD command line partitions format.
1431 config MTDPARTS_DEFAULT
1432 string "Default MTD partition scheme"
1433 depends on CMD_MTDPARTS || CMD_NAND || CMD_FLASH
1435 Defines a default MTD partitioning scheme in the Linux MTD command
1436 line partitions format
1438 config CMD_MTDPARTS_SPREAD
1439 bool "Padd partition size to take account of bad blocks"
1440 depends on CMD_MTDPARTS
1442 This enables the 'spread' sub-command of the mtdparts command.
1443 This command will modify the existing mtdparts variable by increasing
1444 the size of the partitions such that 1) each partition's net size is
1445 at least as large as the size specified in the mtdparts variable and
1446 2) each partition starts on a good block.
1449 bool "reiser - Access to reiserfs filesystems"
1451 This provides two commands which operate on a resierfs filesystem,
1452 commonly used some years ago:
1454 reiserls - list files
1455 reiserload - load a file
1458 bool "scsi - Access to SCSI devices"
1461 This provides a 'scsi' command which provides access to SCSI (Small
1462 Computer System Interface) devices. The command provides a way to
1463 scan the bus, reset the bus, read and write data and get information
1467 bool "yaffs2 - Access of YAFFS2 filesystem"
1471 This provides commands for accessing a YAFFS2 filesystem. Yet
1472 Another Flash Filesystem 2 is a filesystem designed specifically
1473 for NAND flash. It incorporates bad-block management and ensures
1474 that device writes are sequential regardless of filesystem
1478 bool "zfs - Access of ZFS filesystem"
1480 This provides commands to accessing a ZFS filesystem, commonly used
1481 on Solaris systems. Two sub-commands are provided:
1483 zfsls - list files in a directory
1484 zfsload - load a file
1486 See doc/README.zfs for more details.
1490 menu "Debug commands"
1495 The bedbug (emBEDded deBUGger) command provides debugging features
1496 for some PowerPC processors. For details please see the
1497 docuemntation in doc/README.beddbug
1500 bool "diag - Board diagnostics"
1502 This command provides access to board diagnostic tests. These are
1503 called Power-on Self Tests (POST). The command allows listing of
1504 available tests and running either all the tests, or specific tests
1508 bool "irq - Show information about interrupts"
1509 depends on !ARM && !MIPS && !SH
1511 This enables two commands:
1513 interrupts - enable or disable interrupts
1514 irqinfo - print device-specific interrupt information
1517 bool "kgdb - Allow debugging of U-Boot with gdb"
1519 This enables a 'kgdb' command which allows gdb to connect to U-Boot
1520 over a serial link for debugging purposes. This allows
1521 single-stepping, inspecting variables, etc. This is supported only
1522 on PowerPC at present.
1525 bool "log - Generation, control and access to logging"
1527 This provides access to logging features. It allows the output of
1528 log data to be controlled to a limited extent (setting up the default
1529 maximum log level for emitting of records). It also provides access
1530 to a command used for testing the log system.
1533 bool "trace - Support tracing of function calls and timing"
1535 Enables a command to control using of function tracing within
1536 U-Boot. This allows recording of call traces including timing
1537 information. The command can write data to memory for exporting
1538 for analsys (e.g. using bootchart). See doc/README.trace for full
1544 tristate "Enable UBI - Unsorted block images commands"
1548 default y if NAND_SUNXI
1550 UBI is a software layer above MTD layer which admits use of LVM-like
1551 logical volumes on top of MTD devices, hides some complexities of
1552 flash chips like wear and bad blocks and provides some other useful
1553 capabilities. Please, consult the MTD web site for more details
1554 (www.linux-mtd.infradead.org). Activate this option if you want
1555 to use U-Boot UBI commands.
1558 tristate "Enable UBIFS - Unsorted block images filesystem commands"
1562 default y if CMD_UBI
1564 UBIFS is a file system for flash devices which works on top of UBI.
projects / u-boot / blob