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Kconfig
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menu "Command line interface"
config CMDLINE
bool "Support U-Boot commands"
default y
help
Enable U-Boot's command-line functions. This provides a means
to enter commands into U-Boot for a wide variety of purposes. It
also allows scripts (containing commands) to be executed.
Various commands and command categorys can be indivdually enabled.
Depending on the number of commands enabled, this can add
substantially to the size of U-Boot.
config HUSH_PARSER
bool "Use hush shell"
depends on CMDLINE
help
This option enables the "hush" shell (from Busybox) as command line
interpreter, thus enabling powerful command line syntax like
if...then...else...fi conditionals or `&&' and '||'
constructs ("shell scripts").
If disabled, you get the old, much simpler behaviour with a somewhat
smaller memory footprint.
config CMDLINE_EDITING
bool "Enable command line editing"
depends on CMDLINE
default y
help
Enable editing and History functions for interactive command line
input operations
config CMDLINE_PS_SUPPORT
bool "Enable support for changing the command prompt string at run-time"
depends on HUSH_PARSER
help
Only static string in the prompt is supported so far. The string is
obtained from environment variables PS1 and PS2.
config AUTO_COMPLETE
bool "Enable auto complete using TAB"
depends on CMDLINE
default y
help
Enable auto completion of commands using TAB.
config SYS_LONGHELP
bool "Enable long help messages"
depends on CMDLINE
default y if CMDLINE
help
Defined when you want long help messages included
Do not set this option when short of memory.
config SYS_PROMPT
string "Shell prompt"
default "Zynq> " if ARCH_ZYNQ
default "ZynqMP> " if ARCH_ZYNQMP
default "=> "
help
This string is displayed in the command line to the left of the
cursor.
config SYS_PROMPT_HUSH_PS2
string "Hush shell secondary prompt"
depends on HUSH_PARSER
default "> "
help
This defines the secondary prompt string, which is
printed when the command interpreter needs more input
to complete a command. Usually "> ".
config SYS_MAXARGS
int "Maximum number arguments accepted by commands"
default 16
config SYS_CBSIZE
int "Console input buffer size"
default 2048 if ARCH_TEGRA || ARCH_VERSAL || ARCH_ZYNQ || ARCH_ZYNQMP || \
RCAR_GEN3 || TARGET_SOCFPGA_SOC64
default 512 if ARCH_MX5 || ARCH_MX6 || ARCH_MX7 || FSL_LSCH2 || \
FSL_LSCH3 || X86
default 256 if M68K || PPC
default 1024
config SYS_PBSIZE
int "Buffer size for console output"
default 1024 if ARCH_SUNXI
default 1044
config SYS_XTRACE
bool "Command execution tracer"
depends on CMDLINE
default y if CMDLINE
help
This option enables the possiblity to print all commands before
executing them and after all variables are evaluated (similar
to Bash's xtrace/'set -x' feature).
To enable the tracer a variable "xtrace" needs to be defined in
the environment.
config BUILD_BIN2C
bool
comment "Commands"
menu "Info commands"
config CMD_ACPI
bool "acpi"
depends on ACPI
default y
help
List and dump ACPI tables. ACPI (Advanced Configuration and Power
Interface) is used mostly on x86 for providing information to the
Operating System about devices in the system. The tables are set up
by the firmware, typically U-Boot but possibly an earlier firmware
module, if U-Boot is chain-loaded from something else. ACPI tables
can also include code, to perform hardware-specific tasks required
by the Operating Systems. This allows some amount of separation
between the firmware and OS, and is particularly useful when you
want to make hardware changes without the OS needing to be adjusted.
config CMD_ADDRMAP
bool "addrmap"
depends on ADDR_MAP
default y
help
List non-identity virtual-physical memory mappings for 32-bit CPUs.
config CMD_BDI
bool "bdinfo"
default y
help
Print board info
config CMD_BDINFO_EXTRA
bool "bdinfo extra features"
default y if SANDBOX || X86
help
Show additional information about the board. This uses a little more
code space but provides more options, particularly those useful for
bringup, development and debugging.
config CMD_CONFIG
bool "config"
default SANDBOX
select BUILD_BIN2C
help
Print ".config" contents.
If this option is enabled, the ".config" file contents are embedded
in the U-Boot image and can be printed on the console by the "config"
command. This provides information of which options are enabled on
the running U-Boot.
config CMD_CONSOLE
bool "coninfo"
default y
help
Print console devices and information.
config CMD_CPU
bool "cpu"
depends on CPU
help
Print information about available CPUs. This normally shows the
number of CPUs, type (e.g. manufacturer, architecture, product or
internal name) and clock frequency. Other information may be
available depending on the CPU driver.
config CMD_FWU_METADATA
bool "fwu metadata read"
depends on FWU_MULTI_BANK_UPDATE
help
Command to read the metadata and dump it's contents
config CMD_LICENSE
bool "license"
select BUILD_BIN2C
help
Print GPL license text
config CMD_PMC
bool "pmc"
help
Provides access to the Intel Power-Management Controller (PMC) so
that its state can be examined. This does not currently support
changing the state but it is still useful for debugging and seeing
what is going on.
config CMD_REGINFO
bool "reginfo"
depends on PPC
help
Register dump
config CMD_TLV_EEPROM
bool "tlv_eeprom"
depends on I2C_EEPROM
select CRC32
help
Display and program the system EEPROM data block in ONIE Tlvinfo
format. TLV stands for Type-Length-Value.
config SPL_CMD_TLV_EEPROM
bool "tlv_eeprom for SPL"
depends on SPL_I2C_EEPROM
select SPL_DRIVERS_MISC
select SPL_CRC32
help
Read system EEPROM data block in ONIE Tlvinfo format from SPL.
config CMD_SBI
bool "sbi"
depends on RISCV_SMODE && SBI_V02
help
Display information about the SBI implementation.
endmenu
menu "Boot commands"
config CMD_BOOTD
bool "bootd"
default y
help
Run the command stored in the environment "bootcmd", i.e.
"bootd" does the same thing as "run bootcmd".
config CMD_BOOTM
bool "bootm"
default y
help
Boot an application image from the memory.
config CMD_BOOTM_PRE_LOAD
bool "enable pre-load on bootm"
depends on CMD_BOOTM
depends on IMAGE_PRE_LOAD
default n
help
Enable support of stage pre-load for the bootm command.
This stage allow to check or modify the image provided
to the bootm command.
config CMD_BOOTDEV
bool "bootdev"
depends on BOOTSTD
default y if BOOTSTD_FULL
help
Support listing available bootdevs (boot devices) which can provide an
OS to boot, as well as showing information about a particular one.
This command is not necessary for bootstd to work.
config CMD_BOOTFLOW
bool "bootflow"
depends on BOOTSTD
default y
help
Support scanning for bootflows available with the bootdevs. The
bootflows can optionally be booted.
config CMD_BOOTFLOW_FULL
bool "bootflow - extract subcommands"
depends on BOOTSTD_FULL
default y
help
Add the ability to list the available bootflows, select one and obtain
information about it.
This command is not necessary for bootstd to work.
config CMD_BOOTMETH
bool "bootmeth"
depends on BOOTSTD
default y if BOOTSTD_FULL
help
Support listing available bootmethds (methods used to boot an
Operating System), as well as selecting the order that the bootmeths
are used.
This command is not necessary for bootstd to work.
config BOOTM_EFI
bool "Support booting UEFI FIT images"
depends on CMD_BOOTEFI && CMD_BOOTM && FIT
default y
help
Support booting UEFI FIT images via the bootm command.
config CMD_BOOTZ
bool "bootz"
help
Boot the Linux zImage
config CMD_BOOTI
bool "booti"
depends on ARM64 || RISCV
default y
help
Boot an AArch64 Linux Kernel image from memory.
config BOOTM_LINUX
bool "Support booting Linux OS images"
depends on CMD_BOOTM || CMD_BOOTZ || CMD_BOOTI
default y
help
Support booting the Linux kernel directly via a command such as bootm
or booti or bootz.
config BOOTM_NETBSD
bool "Support booting NetBSD (non-EFI) loader images"
depends on CMD_BOOTM
default y
help
Support booting NetBSD via the bootm command.
config BOOTM_OPENRTOS
bool "Support booting OPENRTOS / FreeRTOS images"
depends on CMD_BOOTM
help
Support booting OPENRTOS / FreeRTOS via the bootm command.
config BOOTM_OSE
bool "Support booting Enea OSE images"
depends on (ARM && (ARM64 || CPU_V7A || CPU_V7R) || SANDBOX || PPC || X86)
depends on CMD_BOOTM
help
Support booting Enea OSE images via the bootm command.
config BOOTM_PLAN9
bool "Support booting Plan9 OS images"
depends on CMD_BOOTM
default y
help
Support booting Plan9 images via the bootm command.
config BOOTM_RTEMS
bool "Support booting RTEMS OS images"
depends on CMD_BOOTM
default y
help
Support booting RTEMS images via the bootm command.
config CMD_SEAMA
bool "Support read SEAMA NAND images"
depends on MTD_RAW_NAND
help
Support reading NAND Seattle Image (SEAMA) images.
config CMD_VBE
bool "vbe - Verified Boot for Embedded"
depends on BOOTMETH_VBE
default y if BOOTSTD_FULL
help
Provides various subcommands related to VBE, such as listing the
available methods, looking at the state and changing which method
is used to boot. Updating the parameters is not currently
supported.
config BOOTM_VXWORKS
bool "Support booting VxWorks OS images"
depends on CMD_BOOTM
default y
help
Support booting VxWorks images via the bootm command.
config SYS_BOOTM_LEN
hex "Maximum size of a decompresed OS image"
depends on CMD_BOOTM || CMD_BOOTI || CMD_BOOTZ || \
LEGACY_IMAGE_FORMAT || SPL_LEGACY_IMAGE_FORMAT
default 0x4000000 if PPC || ARM64
default 0x1000000 if X86 || ARCH_MX6 || ARCH_MX7
default 0x800000
help
This is the maximum size of the buffer that is used to decompress the OS
image in to, if passing a compressed image to bootm/booti/bootz.
config CMD_BOOTEFI
bool "bootefi"
depends on EFI_LOADER
default y
help
Boot an EFI image from memory.
config CMD_BOOTEFI_HELLO_COMPILE
bool "Compile a standard EFI hello world binary for testing"
depends on CMD_BOOTEFI && !CPU_V7M
default y
help
This compiles a standard EFI hello world application with U-Boot so
that it can be used with the test/py testing framework. This is useful
for testing that EFI is working at a basic level, and for bringing
up EFI support on a new architecture.
No additional space will be required in the resulting U-Boot binary
when this option is enabled.
config CMD_BOOTEFI_HELLO
bool "Allow booting a standard EFI hello world for testing"
depends on CMD_BOOTEFI_HELLO_COMPILE
default y if CMD_BOOTEFI_SELFTEST
help
This adds a standard EFI hello world application to U-Boot so that
it can be used with the 'bootefi hello' command. This is useful
for testing that EFI is working at a basic level, and for bringing
up EFI support on a new architecture.
source lib/efi_selftest/Kconfig
config CMD_BOOTMENU
bool "bootmenu"
select MENU
select CHARSET
help
Add an ANSI terminal boot menu command.
config CMD_ADTIMG
bool "adtimg"
help
Android DTB/DTBO image manipulation commands. Read dtb/dtbo files from
image into RAM, dump image structure information, etc. Those dtb/dtbo
files should be merged in one dtb further, which needs to be passed to
the kernel, as part of a boot process.
config CMD_ABOOTIMG
bool "abootimg"
depends on ANDROID_BOOT_IMAGE
help
Android Boot Image manipulation commands. Allows one to extract
images contained in boot.img, like kernel, ramdisk, dtb, etc, and
obtain corresponding meta-information from boot.img.
See doc/android/boot-image.rst for details.
config CMD_CEDIT
bool "cedit - Configuration editor"
depends on CEDIT
default y
help
Provides a command to allow editing of board configuration and
providing a UI for the user to adjust settings. Subcommands allow
loading and saving of configuration as well as showing an editor.
config CMD_ELF
bool "bootelf, bootvx"
default y
select LIB_ELF
help
Boot an ELF/vxWorks image from the memory.
config CMD_FDT
bool "Flattened Device Tree utility commands"
default y
depends on OF_LIBFDT
help
Do FDT related setup before booting into the Operating System.
config SUPPORT_EXTENSION_SCAN
bool
config CMD_EXTENSION
bool "Extension board management command"
select CMD_FDT
depends on SUPPORT_EXTENSION_SCAN
help
Enables the "extension" command, which allows to detect
extension boards connected to the system, and apply
corresponding Device Tree overlays.
config CMD_GO
bool "go"
default y
help
Start an application at a given address.
config CMD_RUN
bool "run"
default y
help
Run the command in the given environment variable.
config CMD_IMI
bool "iminfo"
default y
help
Print header information for application image.
config CMD_IMLS
bool "imls"
help
List all images found in flash
config CMD_XIMG
bool "imxtract"
default y
help
Extract a part of a multi-image.
config CMD_SPL
bool "spl export - Export boot information for Falcon boot"
depends on SPL
help
Falcon mode allows booting directly from SPL into an Operating
System such as Linux, thus skipping U-Boot proper. See
doc/README.falcon for full information about how to use this
command.
config CMD_SPL_NAND_OFS
hex "Offset of OS args or dtb for Falcon-mode NAND boot"
depends on CMD_SPL && (TPL_NAND_SUPPORT || SPL_NAND_SUPPORT)
default 0x0
help
This provides the offset of the command line arguments for Linux
when booting from NAND in Falcon mode. See doc/README.falcon
for full information about how to use this option (and also see
board/gateworks/gw_ventana/README for an example).
config CMD_SPL_NOR_OFS
hex "Offset of OS args or dtb for Falcon-mode NOR boot"
depends on CMD_SPL && SPL_NOR_SUPPORT
default 0x0
help
This provides the offset of the command line arguments or dtb for
Linux when booting from NOR in Falcon mode.
config CMD_SPL_WRITE_SIZE
hex "Size of argument area"
depends on CMD_SPL
default 0x2000
help
This provides the size of the command-line argument area in NAND
flash used by Falcon-mode boot. See the documentation until CMD_SPL
for detail.
config CMD_THOR_DOWNLOAD
bool "thor - TIZEN 'thor' download"
select DFU
select USB_FUNCTION_THOR
depends on USB_GADGET_DOWNLOAD
help
Implements the 'thor' download protocol. This is a way of
downloading a software update over USB from an attached host.
There is no documentation about this within the U-Boot source code
but you should be able to find something on the interwebs.
config THOR_RESET_OFF
bool "thor: Disable reset on completion"
depends on CMD_THOR_DOWNLOAD
config CMD_ZBOOT
bool "zboot - x86 boot command"
help
With x86 machines it is common to boot a bzImage file which
contains both a kernel and a setup.bin file. The latter includes
configuration information from the dark ages which x86 boards still
need to pick things out of.
Consider using FIT in preference to this since it supports directly
booting both 32- and 64-bit kernels, as well as secure boot.
Documentation is available in doc/uImage.FIT/x86-fit-boot.txt
endmenu
menu "Environment commands"
config CMD_ASKENV
bool "ask for env variable"
help
Ask for environment variable
config CMD_EXPORTENV
bool "env export"
default y
help
Export environments.
config CMD_IMPORTENV
bool "env import"
default y
help
Import environments.
config CMD_EDITENV
bool "editenv"
default y
help
Edit environment variable.
config CMD_GREPENV
bool "search env"
help
Allow for searching environment variables
config CMD_SAVEENV
bool "saveenv"
default y
help
Save all environment variables into the compiled-in persistent
storage.
config CMD_ERASEENV
bool "eraseenv"
depends on CMD_SAVEENV
help
Erase environment variables from the compiled-in persistent
storage.
config CMD_ENV_EXISTS
bool "env exists"
default y
help
Check if a variable is defined in the environment for use in
shell scripting.
config CMD_ENV_CALLBACK
bool "env callbacks - print callbacks and their associated variables"
help
Some environment variable have callbacks defined by
U_BOOT_ENV_CALLBACK. These are called when the variable changes.
For example changing "baudrate" adjust the serial baud rate. This
command lists the currently defined callbacks.
config CMD_ENV_FLAGS
bool "env flags -print variables that have non-default flags"
help
Some environment variables have special flags that control their
behaviour. For example, serial# can only be written once and cannot
be deleted. This command shows the variables that have special
flags.
config CMD_NVEDIT_EFI
bool "env [set|print] -e - set/print UEFI variables"
depends on EFI_LOADER
imply HEXDUMP
help
UEFI variables are encoded as some form of U-Boot variables.
If enabled, we are allowed to set/print UEFI variables using
"env" command with "-e" option without knowing details.
config CMD_NVEDIT_INDIRECT
bool "env indirect - Sets environment value from another"
config CMD_NVEDIT_INFO
bool "env info - print or evaluate environment information"
help
Print environment information:
- env_valid : is environment valid
- env_ready : is environment imported into hash table
- env_use_default : is default environment used
This command can be optionally used for evaluation in scripts:
[-d] : evaluate whether default environment is used
[-p] : evaluate whether environment can be persisted
[-q] : quiet output
The result of multiple evaluations will be combined with AND.
config CMD_NVEDIT_LOAD
bool "env load"
help
Load all environment variables from the compiled-in persistent
storage.
config CMD_NVEDIT_SELECT
bool "env select"
help
Select the compiled-in persistent storage of environment variables.
endmenu
menu "Memory commands"
config CMD_BINOP
bool "binop"
help
Compute binary operations (xor, or, and) of byte arrays of arbitrary
size from memory and store the result in memory or the environment.
config CMD_BLOBLIST
bool "bloblist"
default y if BLOBLIST
help
Show information about the bloblist, a collection of binary blobs
held in memory that persist between SPL and U-Boot. In the case of
x86 devices the bloblist can be used to hold ACPI tables so that they
remain available in memory.
config CMD_CRC32
bool "crc32"
default y
select HASH
help
Compute CRC32.
config CRC32_VERIFY
bool "crc32 -v"
depends on CMD_CRC32
help
Add -v option to verify data against a crc32 checksum.
config CMD_EEPROM
bool "eeprom - EEPROM subsystem"
help
(deprecated, needs conversion to driver model)
Provides commands to read and write EEPROM (Electrically Erasable
Programmable Read Only Memory) chips that are connected over an
I2C bus.
config CMD_EEPROM_LAYOUT
bool "Enable layout-aware eeprom commands"
depends on CMD_EEPROM
help
(deprecated, needs conversion to driver model)
When enabled, additional eeprom sub-commands become available.
eeprom print - prints the contents of the eeprom in a human-readable
way (eeprom layout fields, and data formatted to be fit for human
consumption).
eeprom update - allows user to update eeprom fields by specifying
the field name, and providing the new data in a human readable format
(same format as displayed by the eeprom print command).
Both commands can either auto detect the layout, or be told which
layout to use.
Feature API:
__weak int parse_layout_version(char *str)
- override to provide your own layout name parsing
__weak void __eeprom_layout_assign(struct eeprom_layout *layout,
int layout_version);
- override to setup the layout metadata based on the version
__weak int eeprom_layout_detect(unsigned char *data)
- override to provide your own algorithm for detecting layout
version
eeprom_field.c
- contains various printing and updating functions for common
types of eeprom fields. Can be used for defining
custom layouts.
config EEPROM_LAYOUT_HELP_STRING
string "Tells user what layout names are supported"
depends on CMD_EEPROM_LAYOUT
default "<not defined>"
help
Help printed with the LAYOUT VERSIONS part of the 'eeprom'
command's help.
config SYS_I2C_EEPROM_BUS
int "I2C bus of the EEPROM device."
depends on CMD_EEPROM
default 0
config SYS_I2C_EEPROM_ADDR_LEN
int "Length in bytes of the EEPROM memory array address"
depends on CMD_EEPROM || ID_EEPROM
default 1
range 1 2
help
Note: This is NOT the chip address length!
config SYS_EEPROM_SIZE
depends on CMD_EEPROM
int "Size in bytes of the EEPROM device"
default 256
config SYS_EEPROM_PAGE_WRITE_BITS
int "Number of bits used to address bytes in a single page"
depends on CMD_EEPROM
default 8
help
The EEPROM page size is 2^SYS_EEPROM_PAGE_WRITE_BITS.
A 64 byte page, for example would require six bits.
config SYS_EEPROM_PAGE_WRITE_DELAY_MS
int "Number of milliseconds to delay between page writes"
depends on CMD_EEPROM || CMD_I2C
default 0
config LOOPW
bool "loopw"
help
Infinite write loop on address range
config CMD_MD5SUM
bool "md5sum"
select MD5
help
Compute MD5 checksum.
config MD5SUM_VERIFY
bool "md5sum -v"
depends on CMD_MD5SUM
help
Add -v option to verify data against an MD5 checksum.
config CMD_MEMINFO
bool "meminfo"
help
Display memory information.
config CMD_MEMORY
bool "md, mm, nm, mw, cp, cmp, base, loop"
default y
help
Memory commands.
md - memory display
mm - memory modify (auto-incrementing address)
nm - memory modify (constant address)
mw - memory write (fill)
cp - memory copy
cmp - memory compare
base - print or set address offset
loop - initialize loop on address range
config CMD_MEM_SEARCH
bool "ms - Memory search"
help
Memory-search command
This allows searching through a region of memory looking for hex
data (byte, 16-bit word, 32-bit long, also 64-bit on machines that
support it). It is also possible to search for a string. The
command accepts a memory range and a list of values to search for.
The values need to appear in memory in the same order they are given
in the command. At most 10 matches can be returned at a time, but
pressing return will show the next 10 matches. Environment variables
are set for use with scripting (memmatches, memaddr, mempos).
config CMD_MX_CYCLIC
bool "Enable cyclic md/mw commands"
depends on CMD_MEMORY
help
Add the "mdc" and "mwc" memory commands. These are cyclic
"md/mw" commands.
Examples:
=> mdc.b 10 4 500
This command will print 4 bytes (10,11,12,13) each 500 ms.
=> mwc.l 100 12345678 10
This command will write 12345678 to address 100 all 10 ms.
config CMD_RANDOM
bool "random"
default y
depends on CMD_MEMORY && (LIB_RAND || LIB_HW_RAND)
help
random - fill memory with random data
config CMD_MEMTEST
bool "memtest"
help
Simple RAM read/write test.
if CMD_MEMTEST
config SYS_ALT_MEMTEST
bool "Alternative test"
help
Use a more complete alternative memory test.
if SYS_ALT_MEMTEST
config SYS_ALT_MEMTEST_BITFLIP
bool "Bitflip test"
default y
help
The alternative memory test includes bitflip test since 2020.07.
The bitflip test significantly increases the overall test time.
Bitflip test can optionally be disabled here.
endif
config SYS_MEMTEST_START
hex "default start address for mtest"
default 0x0
help
This is the default start address for mtest for simple read/write
test. If no arguments are given to mtest, default address is used
as start address.
config SYS_MEMTEST_END
hex "default end address for mtest"
default 0x1000
help
This is the default end address for mtest for simple read/write
test. If no arguments are given to mtest, default address is used
as end address.
endif
config CMD_SHA1SUM
bool "sha1sum"
select SHA1
help
Compute SHA1 checksum.
config SHA1SUM_VERIFY
bool "sha1sum -v"
depends on CMD_SHA1SUM
help
Add -v option to verify data against a SHA1 checksum.
config CMD_STRINGS
bool "strings - display strings in memory"
help
This works similarly to the Unix 'strings' command except that it
works with a memory range. String of printable characters found
within the range are displayed. The minimum number of characters
for a sequence to be considered a string can be provided.
endmenu
menu "Compression commands"
config CMD_LZMADEC
bool "lzmadec"
default y if CMD_BOOTI
select LZMA
help
Support decompressing an LZMA (Lempel-Ziv-Markov chain algorithm)
image from memory.
config CMD_UNLZ4
bool "unlz4"
default y if CMD_BOOTI
select LZ4
help
Support decompressing an LZ4 image from memory region.
config CMD_UNZIP
bool "unzip"
default y if CMD_BOOTI
select GZIP
help
Uncompress a zip-compressed memory region.
config CMD_ZIP
bool "zip"
select GZIP_COMPRESSED
help
Compress a memory region with zlib deflate method.
endmenu
menu "Device access commands"
config CMD_ARMFFA
bool "Arm FF-A test command"
depends on ARM_FFA_TRANSPORT
help
Provides a test command for the FF-A support
supported options:
- Listing the partition(s) info
- Sending a data pattern to the specified partition
- Displaying the arm_ffa device info
config CMD_ARMFLASH
#depends on FLASH_CFI_DRIVER
bool "armflash"
help
ARM Ltd reference designs flash partition access
config CMD_ADC
bool "adc - Access Analog to Digital Converters info and data"
select ADC
depends on DM_REGULATOR
help
Shows ADC device info and permit printing one-shot analog converted
data from a named Analog to Digital Converter.
config CMD_BCB
bool "bcb"
depends on MMC
depends on PARTITIONS
help
Read/modify/write the fields of Bootloader Control Block, usually
stored on the flash "misc" partition with its structure defined in:
https://android.googlesource.com/platform/bootable/recovery/+/master/
bootloader_message/include/bootloader_message/bootloader_message.h
Some real-life use-cases include (but are not limited to):
- Determine the "boot reason" (and act accordingly):
https://source.android.com/devices/bootloader/boot-reason
- Get/pass a list of commands from/to recovery:
https://android.googlesource.com/platform/bootable/recovery
- Inspect/dump the contents of the BCB fields
config CMD_BIND
bool "bind/unbind - Bind or unbind a device to/from a driver"
depends on DM
default y if USB_ETHER
help
Bind or unbind a device to/from a driver from the command line.
This is useful in situations where a device may be handled by several
drivers. For example, this can be used to bind a UDC to the usb ether