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
624 config CMD_FPGA_LOADBP
625 bool "fpga loadbp - load partial bitstream (Xilinx only)"
628 Supports loading an FPGA device from a bitstream buffer containing
631 config CMD_FPGA_LOADFS
632 bool "fpga loadfs - load bitstream from FAT filesystem (Xilinx only)"
635 Supports loading an FPGA device from a FAT filesystem.
637 config CMD_FPGA_LOADMK
638 bool "fpga loadmk - load bitstream from image"
641 Supports loading an FPGA device from a image generated by mkimage.
643 config CMD_FPGA_LOADP
644 bool "fpga loadp - load partial bitstream"
647 Supports loading an FPGA device from a bitstream buffer containing
651 bool "fpgad - dump FPGA registers"
653 (legacy, needs conversion to driver model)
654 Provides a way to dump FPGA registers by calling the board-specific
655 fpga_get_reg() function. This functions similarly to the 'md'
659 bool "fuse - support for the fuse subssystem"
661 (deprecated - needs conversion to driver model)
662 This allows reading, sensing, programming or overriding fuses
663 which control the behaviour of the device. The command uses the
672 bool "GPT (GUID Partition Table) command"
673 select PARTITION_UUIDS
677 Enable the 'gpt' command to ready and write GPT style partition
681 bool "GPT Random UUID generation"
684 Enable the generation of partitions with random UUIDs if none
687 config CMD_GPT_RENAME
688 bool "GPT partition renaming commands"
691 Enables the 'gpt' command to interchange names on two GPT
692 partitions via the 'gpt swap' command or to rename single
693 partitions via the 'rename' command.
696 bool "ide - Support for IDE drivers"
699 Provides an 'ide' command which allows accessing the IDE drive,
700 reseting the IDE interface, printing the partition table and
701 geting device info. It also enables the 'diskboot' command which
702 permits booting from an IDE drive.
705 bool "io - Support for performing I/O accesses"
707 Provides an 'iod' command to display I/O space and an 'iow' command
708 to write values to the I/O space. This can be useful for manually
709 checking the state of devices during boot when debugging device
713 bool "iotrace - Support for tracing I/O activity"
715 Provides an 'iotrace' command which supports recording I/O reads and
716 writes in a trace buffer in memory . It also maintains a checksum
717 of the trace records (even if space is exhausted) so that the
718 sequence of I/O accesses can be verified.
720 When debugging drivers it is useful to see what I/O accesses were
721 done and in what order.
723 Even if the individual accesses are of little interest it can be
724 useful to verify that the access pattern is consistent each time
725 an operation is performed. In this case a checksum can be used to
726 characterise the operation of a driver. The checksum can be compared
727 across different runs of the operation to verify that the driver is
730 In particular, when performing major refactoring of the driver, where
731 the access pattern should not change, the checksum provides assurance
732 that the refactoring work has not broken the driver.
734 This works by sneaking into the io.h heder for an architecture and
735 redirecting I/O accesses through iotrace's tracing mechanism.
737 For now no commands are provided to examine the trace buffer. The
738 format is fairly simple, so 'md' is a reasonable substitute.
740 Note: The checksum feature is only useful for I/O regions where the
741 contents do not change outside of software control. Where this is not
742 suitable you can fall back to manually comparing the addresses. It
743 might be useful to enhance tracing to only checksum the accesses and
744 not the data read/written.
753 default n if ARCH_SUNXI
756 Load a binary file over serial line.
760 default n if ARCH_SUNXI
763 Load an S-Record file over serial line
768 MMC memory mapped support.
772 default y if NAND_SUNXI
777 config CMD_NAND_TRIMFFS
778 bool "nand write.trimffs"
779 default y if ARCH_SUNXI
781 Allows one to skip empty pages when flashing something on a NAND.
783 config CMD_NAND_LOCK_UNLOCK
784 bool "nand lock/unlock"
786 NAND locking support.
788 config CMD_NAND_TORTURE
791 NAND torture support.
800 NVM Express device support
803 bool "mmc_spi - Set up MMC SPI device"
805 Provides a way to set up an MMC (Multimedia Card) SPI (Serial
806 Peripheral Interface) device. The device provides a means of
807 accessing an MMC device via SPI using a single data line, limited
808 to 20MHz. It is useful since it reduces the amount of protocol code
812 bool "onenand - access to onenand device"
814 OneNAND is a brand of NAND ('Not AND' gate) flash which provides
815 various useful features. This command allows reading, writing,
816 and erasing blocks. It allso provides a way to show and change
817 bad blocks, and test the device.
821 select PARTITION_UUIDS
823 Read and display information about the partition table on
827 bool "pci - Access PCI devices"
829 Provide access to PCI (Peripheral Interconnect Bus), a type of bus
830 used on some devices to allow the CPU to communicate with its
831 peripherals. Sub-commands allow bus enumeration, displaying and
832 changing configuration space and a few other features.
835 bool "pinit - Set up PCMCIA device"
837 Provides a means to initialise a PCMCIA (Personal Computer Memory
838 Card International Association) device. This is an old standard from
839 about 1990. These devices are typically removable memory or network
840 cards using a standard 68-pin connector.
843 bool "read - Read binary data from a partition"
845 Provides low-level access to the data in a partition.
847 config CMD_REMOTEPROC
849 depends on REMOTEPROC
851 Support for Remote Processor control
854 bool "sata - Access SATA subsystem"
857 SATA (Serial Advanced Technology Attachment) is a serial bus
858 standard for connecting to hard drives and other storage devices.
859 This command provides information about attached devices and allows
860 reading, writing and other operations.
862 SATA replaces PATA (originally just ATA), which stands for Parallel AT
863 Attachment, where AT refers to an IBM AT (Advanced Technology)
864 computer released in 1984.
867 bool "saves - Save a file over serial in S-Record format"
869 Provides a way to save a binary file using the Motorola S-Record
870 format over the serial line.
873 bool "sdram - Print SDRAM configuration information"
875 Provides information about attached SDRAM. This assumed that the
876 SDRAM has an EEPROM with information that can be read using the
877 I2C bus. This is only available on some boards.
885 bool "sf test - Allow testing of SPI flash"
887 Provides a way to test that SPI flash is working correctly. The
888 test is destructive, in that an area of SPI flash must be provided
889 for the test to use. Performance information is also provided,
890 measuring the performance of reading, writing and erasing in
891 Mbps (Million Bits Per Second). This value should approximately
892 equal the SPI bus speed for a single-bit-wide SPI bus, assuming
893 everything is working properly.
901 bool "tsi148 - Command to access tsi148 device"
903 This provides various sub-commands to initialise and configure the
904 Turndra tsi148 device. See the command help for full details.
907 bool "universe - Command to set up the Turndra Universe controller"
909 This allows setting up the VMEbus provided by this controller.
910 See the command help for full details.
919 select USB_FUNCTION_SDP
921 Enables the command "sdp" which is used to have U-Boot emulating the
922 Serial Download Protocol (SDP) via USB.
925 depends on USB_FUNCTION_ROCKUSB
927 Rockusb protocol is widely used by Rockchip SoC based devices. It can
928 read/write info, image to/from devices. This enable rockusb command
929 support to communication with rockusb device. for more detail about
930 this command, please read doc/README.rockusb.
932 config CMD_USB_MASS_STORAGE
933 bool "UMS usb mass storage"
934 select USB_FUNCTION_MASS_STORAGE
936 USB mass storage support
941 menu "Shell scripting commands"
953 Return true/false on integer compare.
959 Run script from memory
965 Evaluate boolean and math expressions and store the result in an env
967 Also supports loading the value at a memory location into a variable.
968 If CONFIG_REGEX is enabled, setexpr also supports a gsub function.
972 menu "Network commands"
975 bool "bootp, tftpboot"
980 bootp - boot image via network using BOOTP/TFTP protocol
981 tftpboot - boot image via network using TFTP protocol
986 TFTP put command, for uploading files to a server
991 Act as a TFTP server and boot the first received file
996 Boot image via network using RARP/TFTP protocol
1001 Boot image via network using DHCP/TFTP protocol
1007 Boot image via network using PXE protocol
1013 Boot image via network using NFS protocol.
1018 Enable MII utility commands.
1023 Send ICMP ECHO_REQUEST to network host
1028 Perform CDP network configuration
1033 Synchronize RTC via network
1038 Lookup the IP of a hostname
1040 config CMD_LINK_LOCAL
1043 Acquire a network IP address using the link-local protocol
1048 Allow control of L2 Ethernet switch commands. These are supported
1049 by the vsc9953 Ethernet driver at present. Sub-commands allow
1050 operations such as enabling / disabling a port and
1051 viewing/maintaining the filtering database (FDB)
1055 menu "Misc commands"
1058 bool "Enable 'bmp' command"
1059 depends on LCD || DM_VIDEO || VIDEO
1061 This provides a way to obtain information about a BMP-format iamge
1062 and to display it. BMP (which presumably stands for BitMaP) is a
1063 file format defined by Microsoft which supports images of various
1064 depths, formats and compression methods. Headers on the file
1065 determine the formats used. This command can be used by first loading
1066 the image into RAM, then using this command to look at it or display
1070 bool "Enable board-specific commands"
1072 (deprecated: instead, please define a Kconfig option for each command)
1074 Some boards have board-specific commands which are only enabled
1075 during developemnt and need to be turned off for production. This
1076 option provides a way to control this. The commands that are enabled
1077 vary depending on the board.
1079 config CMD_BKOPS_ENABLE
1080 bool "mmc bkops enable"
1084 Enable command for setting manual background operations handshake
1085 on a eMMC device. The feature is optionally available on eMMC devices
1086 conforming to standard >= 4.41.
1088 config CMD_BLOCK_CACHE
1089 bool "blkcache - control and stats for block cache"
1090 depends on BLOCK_CACHE
1091 default y if BLOCK_CACHE
1093 Enable the blkcache command, which can be used to control the
1094 operation of the cache functions.
1095 This is most useful when fine-tuning the operation of the cache
1096 during development, but also allows the cache to be disabled when
1097 it might hurt performance (e.g. when using the ums command).
1100 bool "icache or dcache"
1102 Enable the "icache" and "dcache" commands
1105 bool "Enable the 'display' command, for character displays"
1107 (this needs porting to driver model)
1108 This enables the 'display' command which allows a string to be
1109 displayed on a simple board-specific display. Implement
1110 display_putc() to use it.
1116 Enable the 'led' command which allows for control of LEDs supported
1117 by the board. The LEDs can be listed with 'led list' and controlled
1118 with led on/off/togle/blink. Any LED drivers can be controlled with
1119 this command, e.g. led_gpio.
1125 Enable the 'date' command for getting/setting the time/date in RTC
1131 Run commands and summarize execution time.
1134 bool "gettime - read elapsed time"
1136 Enable the 'gettime' command which reads the elapsed time since
1137 U-Boot started running. This shows the time in seconds and
1138 milliseconds. See also the 'bootstage' command which provides more
1139 flexibility for boot timing.
1141 # TODO: rename to CMD_SLEEP
1144 default n if ARCH_SUNXI
1147 Delay execution for some time
1152 Access the system timer.
1158 This provides basic access to the U-Boot's sound support. The main
1159 feature is to play a beep.
1161 sound init - set up sound system
1162 sound play - play a sound
1168 This provides access to the QEMU firmware interface. The main
1169 feature is to allow easy loading of files passed to qemu-system
1170 via -kernel / -initrd
1172 source "cmd/mvebu/Kconfig"
1175 bool "terminal - provides a way to attach a serial terminal"
1177 Provides a 'cu'-like serial terminal command. This can be used to
1178 access other serial ports from the system console. The terminal
1179 is very simple with no special processing of characters. As with
1180 cu, you can press ~. (tilde followed by period) to exit.
1183 bool "uuid, guid - generation of unique IDs"
1186 This enables two commands:
1188 uuid - generate random Universally Unique Identifier
1189 guid - generate Globally Unique Identifier based on random UUID
1191 The two commands are very similar except for the endianness of the
1196 source "cmd/ti/Kconfig"
1198 config CMD_BOOTSTAGE
1199 bool "Enable the 'bootstage' command"
1200 depends on BOOTSTAGE
1202 Add a 'bootstage' command which supports printing a report
1203 and un/stashing of bootstage data.
1205 menu "Power commands"
1207 bool "Enable Driver Model PMIC command"
1210 This is the pmic command, based on a driver model pmic's API.
1211 Command features are unchanged:
1212 - list - list pmic devices
1213 - pmic dev <id> - show or [set] operating pmic device (NEW)
1214 - pmic dump - dump registers
1215 - pmic read address - read byte of register at address
1216 - pmic write address - write byte to register at address
1217 The only one change for this command is 'dev' subcommand.
1219 config CMD_REGULATOR
1220 bool "Enable Driver Model REGULATOR command"
1221 depends on DM_REGULATOR
1223 This command is based on driver model regulator's API.
1224 User interface features:
1225 - list - list regulator devices
1226 - regulator dev <id> - show or [set] operating regulator device
1227 - regulator info - print constraints info
1228 - regulator status - print operating status
1229 - regulator value <val] <-f> - print/[set] voltage value [uV]
1230 - regulator current <val> - print/[set] current value [uA]
1231 - regulator mode <id> - print/[set] operating mode id
1232 - regulator enable - enable the regulator output
1233 - regulator disable - disable the regulator output
1235 The '-f' (force) option can be used for set the value which exceeds
1236 the limits, which are found in device-tree and are kept in regulator's
1237 uclass platdata structure.
1241 menu "Security commands"
1243 bool "Enable the 'aes' command"
1246 This provides a means to encrypt and decrypt data using the AES
1247 (Advanced Encryption Standard). This algorithm uses a symetric key
1248 and is widely used as a streaming cipher. Different key lengths are
1249 supported by the algorithm but this command only supports 128 bits
1253 bool "Enable the 'blob' command"
1255 This is used with the Freescale secure boot mechanism.
1257 Freescale's SEC block has built-in Blob Protocol which provides
1258 a method for protecting user-defined data across system power
1259 cycles. SEC block protects data in a data structure called a Blob,
1260 which provides both confidentiality and integrity protection.
1262 Encapsulating data as a blob
1263 Each time that the Blob Protocol is used to protect data, a
1264 different randomly generated key is used to encrypt the data.
1265 This random key is itself encrypted using a key which is derived
1266 from SoC's non-volatile secret key and a 16 bit Key identifier.
1267 The resulting encrypted key along with encrypted data is called a
1268 blob. The non-volatile secure key is available for use only during
1271 During decapsulation, the reverse process is performed to get back
1275 blob enc - encapsulating data as a cryptgraphic blob
1276 blob dec - decapsulating cryptgraphic blob to get the data
1280 blob enc src dst len km
1282 Encapsulate and create blob of data $len bytes long
1283 at address $src and store the result at address $dst.
1284 $km is the 16 byte key modifier is also required for
1285 generation/use as key for cryptographic operation. Key
1286 modifier should be 16 byte long.
1288 blob dec src dst len km
1290 Decapsulate the blob of data at address $src and
1291 store result of $len byte at addr $dst.
1292 $km is the 16 byte key modifier is also required for
1293 generation/use as key for cryptographic operation. Key
1294 modifier should be 16 byte long.
1297 bool "Support 'hash' command"
1300 This provides a way to hash data in memory using various supported
1301 algorithms (such as SHA1, MD5, CRC32). The computed digest can be
1302 saved to memory or to an environment variable. It is also possible
1303 to verify a hash against data in memory.
1309 Add -v option to verify data against a hash.
1312 bool "Enable the 'tpm' command"
1315 This provides a means to talk to a TPM from the command line. A wide
1316 range of commands if provided - see 'tpm help' for details. The
1317 command requires a suitable TPM on your board and the correct driver
1321 bool "Enable the 'tpm test' command"
1324 This provides a a series of tests to confirm that the TPM is working
1325 correctly. The tests cover initialisation, non-volatile RAM, extend,
1326 global lock and checking that timing is within expectations. The
1327 tests pass correctly on Infineon TPMs but may need to be adjusted
1332 menu "Firmware commands"
1334 bool "Enable crosec command"
1338 Enable command-line access to the Chrome OS EC (Embedded
1339 Controller). This provides the 'crosec' command which has
1340 a number of sub-commands for performing EC tasks such as
1341 updating its flash, accessing a small saved context area
1342 and talking to the I2C bus behind the EC (if there is one).
1345 menu "Filesystem commands"
1347 bool "Enable the 'btrsubvol' command"
1350 This enables the 'btrsubvol' command to list subvolumes
1351 of a BTRFS filesystem. There are no special commands for
1352 listing BTRFS directories or loading BTRFS files - this
1353 can be done by the generic 'fs' commands (see CMD_FS_GENERIC)
1354 when BTRFS is enabled (see FS_BTRFS).
1357 bool "Enable the 'cbfs' command"
1360 Define this to enable support for reading from a Coreboot
1361 filesystem. This is a ROM-based filesystem used for accessing files
1362 on systems that use coreboot as the first boot-loader and then load
1363 U-Boot to actually boot the Operating System. Available commands are
1364 cbfsinit, cbfsinfo, cbfsls and cbfsload.
1367 bool "Enable the 'cramfs' command"
1368 depends on FS_CRAMFS
1370 This provides commands for dealing with CRAMFS (Compressed ROM
1371 filesystem). CRAMFS is useful when space is tight since files are
1372 compressed. Two commands are provided:
1374 cramfsls - lists files in a cramfs image
1375 cramfsload - loads a file from a cramfs image
1378 bool "ext2 command support"
1381 Enables EXT2 FS command
1384 bool "ext4 command support"
1387 Enables EXT4 FS command
1389 config CMD_EXT4_WRITE
1391 bool "ext4 write command support"
1394 Enables EXT4 FS write command
1397 bool "FAT command support"
1400 Support for the FAT fs
1402 config CMD_FS_GENERIC
1403 bool "filesystem commands"
1405 Enables filesystem commands (e.g. load, ls) that work for multiple
1409 bool "fsuuid command"
1411 Enables fsuuid command for filesystem UUID.
1414 bool "jffs2 command"
1417 Enables commands to support the JFFS2 (Journalling Flash File System
1418 version 2) filesystem. This enables fsload, ls and fsinfo which
1419 provide the ability to load files, list directories and obtain
1420 filesystem information.
1423 bool "MTD partition support"
1425 MTD partition support
1427 config MTDIDS_DEFAULT
1428 string "Default MTD IDs"
1429 depends on CMD_MTDPARTS || CMD_NAND || CMD_FLASH
1431 Defines a default MTD IDs list for use with MTD partitions in the
1432 Linux MTD command line partitions format.
1434 config MTDPARTS_DEFAULT
1435 string "Default MTD partition scheme"
1436 depends on CMD_MTDPARTS || CMD_NAND || CMD_FLASH
1438 Defines a default MTD partitioning scheme in the Linux MTD command
1439 line partitions format
1441 config CMD_MTDPARTS_SPREAD
1442 bool "Padd partition size to take account of bad blocks"
1443 depends on CMD_MTDPARTS
1445 This enables the 'spread' sub-command of the mtdparts command.
1446 This command will modify the existing mtdparts variable by increasing
1447 the size of the partitions such that 1) each partition's net size is
1448 at least as large as the size specified in the mtdparts variable and
1449 2) each partition starts on a good block.
1452 bool "reiser - Access to reiserfs filesystems"
1454 This provides two commands which operate on a resierfs filesystem,
1455 commonly used some years ago:
1457 reiserls - list files
1458 reiserload - load a file
1461 bool "scsi - Access to SCSI devices"
1464 This provides a 'scsi' command which provides access to SCSI (Small
1465 Computer System Interface) devices. The command provides a way to
1466 scan the bus, reset the bus, read and write data and get information
1470 bool "yaffs2 - Access of YAFFS2 filesystem"
1474 This provides commands for accessing a YAFFS2 filesystem. Yet
1475 Another Flash Filesystem 2 is a filesystem designed specifically
1476 for NAND flash. It incorporates bad-block management and ensures
1477 that device writes are sequential regardless of filesystem
1481 bool "zfs - Access of ZFS filesystem"
1483 This provides commands to accessing a ZFS filesystem, commonly used
1484 on Solaris systems. Two sub-commands are provided:
1486 zfsls - list files in a directory
1487 zfsload - load a file
1489 See doc/README.zfs for more details.
1493 menu "Debug commands"
1498 The bedbug (emBEDded deBUGger) command provides debugging features
1499 for some PowerPC processors. For details please see the
1500 docuemntation in doc/README.beddbug
1503 bool "diag - Board diagnostics"
1505 This command provides access to board diagnostic tests. These are
1506 called Power-on Self Tests (POST). The command allows listing of
1507 available tests and running either all the tests, or specific tests
1511 bool "irq - Show information about interrupts"
1512 depends on !ARM && !MIPS && !SH
1514 This enables two commands:
1516 interrupts - enable or disable interrupts
1517 irqinfo - print device-specific interrupt information
1520 bool "kgdb - Allow debugging of U-Boot with gdb"
1522 This enables a 'kgdb' command which allows gdb to connect to U-Boot
1523 over a serial link for debugging purposes. This allows
1524 single-stepping, inspecting variables, etc. This is supported only
1525 on PowerPC at present.
1528 bool "log - Generation, control and access to logging"
1530 This provides access to logging features. It allows the output of
1531 log data to be controlled to a limited extent (setting up the default
1532 maximum log level for emitting of records). It also provides access
1533 to a command used for testing the log system.
1536 bool "trace - Support tracing of function calls and timing"
1538 Enables a command to control using of function tracing within
1539 U-Boot. This allows recording of call traces including timing
1540 information. The command can write data to memory for exporting
1541 for analsys (e.g. using bootchart). See doc/README.trace for full
1547 tristate "Enable UBI - Unsorted block images commands"
1551 default y if NAND_SUNXI
1553 UBI is a software layer above MTD layer which admits use of LVM-like
1554 logical volumes on top of MTD devices, hides some complexities of
1555 flash chips like wear and bad blocks and provides some other useful
1556 capabilities. Please, consult the MTD web site for more details
1557 (www.linux-mtd.infradead.org). Activate this option if you want
1558 to use U-Boot UBI commands.
1561 tristate "Enable UBIFS - Unsorted block images filesystem commands"
1565 default y if CMD_UBI
1567 UBIFS is a file system for flash devices which works on top of UBI.
projects / u-boot / blob