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Kconfig
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config ARCH
string
option env="ARCH"
config KERNELVERSION
string
option env="KERNELVERSION"
config DEFCONFIG_LIST
string
option defconfig_list
default "$ARCH_DEFCONFIG"
default "arch/$ARCH/defconfig"
config GREGORIAN_CALENDER
bool
config HAS_KALLSYMS
bool
config HAS_MODULES
bool
config HAS_CACHE
bool
help
This allows you do run "make ARCH=sandbox allyesconfig".
Drivers that depend on a cache implementation can depend on this
config, so that you don't get a compilation error.
config HAS_DMA
bool
help
This allows you do run "make ARCH=sandbox allyesconfig".
Drivers that depend on a DMA implementation can depend on this
config, so that you don't get a compilation error.
config GENERIC_GPIO
bool
config BLOCK
bool
config BLOCK_WRITE
bool
config FILETYPE
bool
config BINFMT
bool
select FILETYPE
config UIMAGE
select UNCOMPRESS
select CRC32
bool
config FITIMAGE
bool
select OFTREE
select DIGEST
config FITIMAGE_SIGNATURE
select CRYPTO_RSA
bool
config LOGBUF
bool
config STDDEV
bool
config BAREBOX_UPDATE
bool
config MENUTREE
bool
select GLOB
select GLOB_SORT
config EFI_GUID
bool
help
With this option a table of EFI guids is compiled in.
config EFI_DEVICEPATH
bool
config FILE_LIST
bool
config ARCH_DMA_ADDR_T_64BIT
bool
config BAREBOX_UPDATE_IMX_NAND_FCB
bool
depends on ARCH_IMX6 || ARCH_IMX28
depends on BAREBOX_UPDATE
depends on MTD_WRITE
depends on NAND_MXS
select BCH if ARCH_IMX6
default y
config UBIFORMAT
bool
select LIBSCAN
select LIBUBIGEN
depends on MTD_UBI
default y
config BOOT
bool
menu "General Settings"
config LOCALVERSION
string "Local version - append to the version string"
help
Append an extra string to the end of your version string.
The string you set here will be appended after the contents of
any files with a filename matching localversion* in your
object and source tree, in that order. Your total string can
be a maximum of 64 characters.
config LOCALVERSION_AUTO
bool "Automatically append version information to the version string"
default y
help
This will try to automatically determine if the current tree is a
release tree by looking for git tags that belong to the current
top of tree revision.
A string of the format -gxxxxxxxx will be added to the localversion
if a git-based tree is found. The string generated by this will be
appended after any matching localversion* files, and after the value
set in CONFIG_LOCALVERSION.
(The actual string used here is the first eight characters produced
by running the command:
$ git rev-parse --verify HEAD
which is done within the script "scripts/setlocalversion".)
config BOARDINFO
string
config BANNER
bool "display banner"
default y
config MEMINFO
bool "display memory info"
default y
config ENVIRONMENT_VARIABLES
bool "environment variables support"
config GLOBALVAR
bool "global environment variables support"
default y if !SHELL_NONE
select FNMATCH
help
Global environment variables begin with "global.". Unlike normal
shell variables they have the same values in all contexts. Global
variables are used to control several aspects of the system behaviour.
If unsure, say yes here.
config NVVAR
bool "Non volatile global environment variables support"
default y if !SHELL_NONE
depends on GLOBALVAR
depends on ENV_HANDLING
select FNMATCH
help
Non volatile environment variables begin with "nv.". They behave like
global variables above, but their values are saved in the environment
storage with 'saveenv' and thus are persistent over restarts. nv variables
are coupled with global variables of the same name. Setting "nv.foo" results
in "global.foo" changed also (but not the other way round: setting "global.foo"
leaves "nv.foo" untouched). The idea is that nv variables can store defaults
while global variables can be changed during runtime without changing the
default.
menu "memory layout"
source "pbl/Kconfig"
config MMU
bool "Enable MMU"
depends on !CPU_ARM946E
help
Saying yes here enables the MMU. This is useful on some architectures
to enable the data cache which depends on the MMU. See Documentation/mmu.txt
for further information.
config MMU_EARLY
bool "Enable MMU early"
depends on ARM
depends on MMU
default y
help
This enables the MMU during early startup. This speeds up things during startup
of barebox, but may lead to harder to debug code. If unsure say yes here.
config HAVE_CONFIGURABLE_TEXT_BASE
bool
config TEXT_BASE
depends on HAVE_CONFIGURABLE_TEXT_BASE
prompt "TEXT_BASE"
hex
default ARCH_TEXT_BASE
help
The Address barebox gets linked at.
config BAREBOX_MAX_IMAGE_SIZE
prompt "Maximum size of barebox"
hex
default 0xffffffff
help
Define the maximum size of barebox
config BAREBOX_MAX_PBL_SIZE
depends on PBL_IMAGE
prompt "Maximum pre-bootloader size"
hex
default 0xffffffff
help
On some hardware the ROM code can load the pbl into SRAM, but not
the whole image. This option specifies how big the pbl may get.
config BAREBOX_MAX_BARE_INIT_SIZE
prompt "Maximum bare_init size"
hex
default 0xffffffff
help
Define the maximum size of bare_init
this will allow your bare_init to fit in SRAM as example
ARCH can overwrite it via ARCH_BAREBOX_MAX_BARE_INIT_SIZE
config BAREBOX_MAX_PBLX_SIZE
depends on PBL_MULTI_IMAGES
depends on IMAGE_COMPRESSION
prompt "Maximum PBLX size"
hex
default 0xffffffff
help
Define the maximum size of the PBLX image.
The pblx is a self extracting barebox binary.
config HAVE_CONFIGURABLE_MEMORY_LAYOUT
bool
choice
prompt "select memory layout"
depends on HAVE_CONFIGURABLE_MEMORY_LAYOUT
default MEMORY_LAYOUT_DEFAULT
config MEMORY_LAYOUT_DEFAULT
bool "use default memory layout"
help
select this option to use bareboxs standard memory layout:
stack
-----
malloc heap
-----
TEXT_BASE
config MEMORY_LAYOUT_FIXED
bool "manually assign a memory layout"
help
select this option to manually assign stack base and malloc
heap base
endchoice
config STACK_BASE
depends on MEMORY_LAYOUT_FIXED
hex
prompt "STACK_BASE"
config STACK_SIZE
hex
default 0x8000
prompt "Stack size"
config MALLOC_BASE
depends on MEMORY_LAYOUT_FIXED
hex
prompt "MALLOC_BASE"
config MALLOC_SIZE
hex
default 0x400000
prompt "malloc area size"
endmenu
config BROKEN
bool
config EXPERIMENTAL
bool
prompt "Prompt for experimental code"
choice
prompt "malloc implementation"
config MALLOC_DLMALLOC
bool "dlmalloc"
config MALLOC_TLSF
bool "tlsf"
config MALLOC_DUMMY
bool "dummy malloc"
depends on SHELL_NONE
help
select this option to use a dummy malloc implementation. With this
memory is never freed. This is suitable for well tested noninteractive
environments only.
endchoice
config MODULES
depends on HAS_MODULES
depends on EXPERIMENTAL
bool "module support"
help
This option enables support for loadable modules via insmod. Module
support is quite experimental at the moment. There is no convenient
way to compile modules and the list of exported symbols to actually
make use of modules is short to nonexistent
config KALLSYMS
depends on HAS_KALLSYMS
bool "kallsyms"
help
With Kallsyms enabled all symbols are compiled into the barebox image.
This is useful to print a nice backtrace when an exception occurs.
config RELOCATABLE
depends on PPC || ARM
bool "generate relocatable barebox binary"
help
A non relocatable barebox binary will run at it's compiled in
link address in RAM. This leads to smaller image sizes but may
put barebox just in the middle of RAM. With this option enabled
instead barebox can determine this address at runtime and thus
allowing it to relocate to the end of the available RAM. This
way you have the whole memory in a single piece.
config PANIC_HANG
bool "hang the system in case of a fatal error"
help
This option enables stop of the system in case of a
fatal error, so that you have to reset it manually.
This is probably NOT a good idea for an embedded
system where you want the system to reboot
automatically as fast as possible, but it may be
useful during development since you can try to debug
the conditions that lead to the situation.
config PROMPT
string
prompt "barebox command prompt"
default "barebox:"
config BAUDRATE
int
prompt "Default baudrate"
default 115200
config SIMPLE_READLINE
bool
default y
depends on !CMDLINE_EDITING
config CBSIZE
int
prompt "Buffer size for input from the Console"
default 1024
config FIRMWARE
bool
choice
prompt "Select your shell"
config SHELL_HUSH
bool "hush parser"
select ENVIRONMENT_VARIABLES
select COMMAND_SUPPORT
select PARAMETER
select BINFMT
select STDDEV
help
Enable hush support. This is the most advanced shell available
for barebox.
config SHELL_SIMPLE
bool "Simple parser"
select ENVIRONMENT_VARIABLES
select COMMAND_SUPPORT
select PARAMETER
select STDDEV
help
simple shell. No if/then, no return values from commands, no loops
config SHELL_NONE
bool "no shell (noninteractive build)"
help
No shell at all. This means no shell is started and your board has
to overwrite the barebox_main function pointer which is then called
at the end of the barebox startup process.
endchoice
config MAXARGS
int
depends on SHELL_SIMPLE
prompt "max. Number of arguments accepted for monitor commands"
default 16
config GLOB
bool
select FNMATCH
prompt "globbing support"
help
If you want to use wildcards like * or ? say y here.
Globbing can be used in the HUSH shell, but is also used
internally in the menutree command.
config GLOB_SORT
select QSORT
bool
prompt "glob sort support"
depends on GLOB
config PROMPT_HUSH_PS2
string
depends on SHELL_HUSH
prompt "hush PS2"
default "> "
config HUSH_FANCY_PROMPT
bool
depends on SHELL_HUSH
select PROCESS_ESCAPE_SEQUENCE
prompt "allow fancy hush prompts"
help
Allow to set PS1 from the command line. PS1 can have several escaped commands
like \h for the 'model' string or \w for the current working directory.
config CMDLINE_EDITING
depends on !SHELL_NONE
bool
prompt "Enable command line editing"
config AUTO_COMPLETE
bool
depends on CMDLINE_EDITING
prompt "Enable auto completion"
config MENU
bool
prompt "Menu Framework"
depends on !SHELL_NONE
select PROCESS_ESCAPE_SEQUENCE
help
a menu framework that allow us to create list menu to simplify
barebox and make it more user-friendly
config PASSWORD
bool
prompt "Password Framework"
select DIGEST
help
allow you to have password protection framework
config PASSWORD_DEFAULT
string
prompt "Password default file"
depends on PASSWORD
help
Set this to a file which is used as default password file. This file
has to contain the passwd encoded with the selected password digest.
i.e.:
echo -ne "MyPassword" | md5sum | while read a b; do echo $a > passwdfile; done
if PASSWORD
choice
prompt "passwd checksum"
config PASSWD_SUM_MD5
bool "MD5"
select DIGEST_MD5_GENERIC
config PASSWD_SUM_SHA1
bool "SHA1"
select DIGEST_SHA1_GENERIC
config PASSWD_SUM_SHA256
bool "SHA256"
select DIGEST_SHA256_GENERIC
config PASSWD_SUM_SHA512
bool "SHA512"
select DIGEST_SHA512_GENERIC
config PASSWD_CRYPTO_PBKDF2
bool "PBKDF2"
select CRYPTO_PBKDF2
endchoice
endif
config DYNAMIC_CRC_TABLE
bool
depends on CRC32
prompt "Generate the crc32 table dynamically"
default y
help
Saying yes to this option saves around 800 bytes of binary size.
If unsure say yes.
config ERRNO_MESSAGES
bool
prompt "print error values as text"
default y
config TIMESTAMP
bool
default y
select GREGORIAN_CALENDER
prompt "print timestamp information from images"
help
When CONFIG_TIMESTAMP is selected, the timestamp
(date and time) of an image is printed by image
commands like bootm or iminfo. This option is
automatically enabled when you select CFG_CMD_DATE .
menuconfig BOOTM
select UIMAGE
default y if COMMAND_SUPPORT
bool "bootm support"
config BOOTM_SHOW_TYPE
bool
depends on BOOTM
prompt "show image information"
help
Displays some tags from the uImage:
- OS type
- architecture,
- type
- compression method.
config BOOTM_VERBOSE
bool
prompt "verbose support"
depends on BOOTM
help
Adds the verbose (-v switch) command line option.
config BOOTM_INITRD
bool
prompt "initial RAM disk (initrd) support"
depends on BOOTM
help
Adds support for initial RAM disk and this two command line options:
-r INITRD specify an initrd image
-L ADDR specify initrd load address
config BOOTM_OFTREE
bool
depends on BOOTM
select OFTREE
prompt "device tree (oftree) support"
help
Add support to pass a device tree (a.k.a Open Firmware Tree, oftree). Adds
this command line option:
-o DTS specify device tree
config BOOTM_OFTREE_UIMAGE
bool
prompt "support passing device tree (oftree) uImages"
depends on BOOTM_OFTREE
help
Support using oftree uImages. Without this only raw oftree
blobs can be used.
config BOOTM_AIMAGE
bool
prompt "Android image support"
depends on BOOTM && ARM
help
Support using Android Images.
config BOOTM_FITIMAGE
bool
prompt "FIT image support"
select FITIMAGE
depends on BOOTM && ARM
help
Support using Flattened Image Tree (FIT) Images. FIT is an image
format introduced by U-Boot. A FIT image contains one or multiple
kernels, device trees and initrds. The FIT image itself is a flattened
device tree binary. Have a look at the u-boot source tree
in the "doc/uImage.FIT" folder for more information:
http://git.denx.de/?p=u-boot.git;a=tree;f=doc/uImage.FIT
config BOOTM_FITIMAGE_SIGNATURE
bool
prompt "support verifying signed FIT images"
depends on BOOTM_FITIMAGE
select FITIMAGE_SIGNATURE
help
Support verifying signed FIT images. This requires FIT images
as described in:
http://git.denx.de/?p=u-boot.git;a=blob;f=doc/uImage.FIT/signature.txt
Additionally the barebox device tree needs a /signature node with the
public key with which the image has been signed.
config BOOTM_FITIMAGE_PUBKEY
string "Path to dtsi containing pubkey"
default "../fit/pubkey.dtsi"
depends on BOOTM_FITIMAGE_SIGNATURE
help
Set Path to a dts snippet which holds the public keys for FIT images.
config BOOTM_FORCE_SIGNED_IMAGES
bool
prompt "Force booting of signed images"
depends on BOOTM_FITIMAGE_SIGNATURE
help
With this option enabled only signed images can be booted, unsigned images
are refused to boot. Effectively this means only FIT images can be booted
since they are the only supported image type that support signing.
config BLSPEC
depends on BLOCK
depends on FLEXIBLE_BOOTARGS
depends on !SHELL_NONE
select BOOT
select BOOTM
select OFTREE
bool
prompt "Support bootloader spec"
help
Enable this to let barebox support the Freedesktop bootloader spec,
see: http://www.freedesktop.org/wiki/Specifications/BootLoaderSpec/
The bootloader spec is a standard interface between the bootloader
and the kernel. It allows the bootloader to discover boot options
on a device and it allows the Operating System to install / update
kernels.
config FLEXIBLE_BOOTARGS
bool
prompt "flexible Linux bootargs generation"
depends on GLOBALVAR
help
Select this to get a more flexible bootargs generation. With this
option the bootargs are concatenated together from global variables
beginning with 'global.linux.bootargs.' and 'global.linux.mtdparts.'
This allows for more flexible scripting since with it it's possible
to replace parts of the bootargs string without reconstructing it
completely.
config IMD
bool "barebox metadata support"
config IMD_TARGET
bool "build bareboximd target tool"
depends on IMD
depends on !SANDBOX
config KERNEL_INSTALL_TARGET
bool
depends on !SANDBOX
prompt "Build kernel-install utility for the target"
help
Enable this to compile the kernel-install script using the cross
compiler. The utility for the target will be under
scripts/kernel-install-target
choice
prompt "console support"
default CONSOLE_FULL
config CONSOLE_FULL
bool
prompt "full"
help
This option enables full console support capable of
handling multiple consoles. Also the full console support
is able to store the output which comes before a console
is registered in a circular buffer which will be printed
once the first console is registered. Recommended for most
usecases.
config CONSOLE_SIMPLE
bool
prompt "simple"
config CONSOLE_NONE
bool
prompt "none"
endchoice
choice
prompt "Console activation strategy"
depends on CONSOLE_FULL
default CONSOLE_ACTIVATE_FIRST
config CONSOLE_ACTIVATE_FIRST
bool
prompt "activate first console on startup"
help
Normally on startup all consoles are disabled, so you won't
see anything from barebox starting. Enabling this option
enables the first console.
config CONSOLE_ACTIVATE_ALL
bool
prompt "activate all consoles on startup"
help
Enabling this options activates all consoles on startup, so
you will get output and a prompt on all consoles simultaneously.
Only the first registered console will have the full startup
log though.
config CONSOLE_ACTIVATE_NONE
prompt "leave all consoles disabled"
bool
help
Leave all consoles disabled on startup. Board code or environment
is responsible for enabling a console. Otherwise you'll get a working
barebox, you just won't see anything.
endchoice
config CONSOLE_ALLOW_COLOR
prompt "Allow colored console output during boot"
bool
help
If enabled, colored output is allowed during boot. This is the
compile time default for colored console output. After boot it
can be controlled using global.allow_color.
config PBL_CONSOLE
depends on PBL_IMAGE
depends on !CONSOLE_NONE
bool "Enable console support in PBL"
help
This enables printf/pr_* support in the PBL to get more
informational output earlier during startup. Note that
printf/pr_* need a valid C environment, so the binary
must be running at the address it's linked at and bss must
be cleared. On ARM that would be after setup_c().
source common/ratp/Kconfig
config PARTITION
bool
prompt "Enable Partitions"
source common/partitions/Kconfig
config ENV_HANDLING
select CRC32
bool "Support environment files storage"
default y if !SHELL_NONE
help
Enabling this option will give you environment files which can be stored
over reboots. The "saveenv" command will store all files under /env/ to
the persistent environment, the "loadenv" command (also executed during
startup) will bring them back. If unsure, say yes.
config DEFAULT_ENVIRONMENT
bool
default y
depends on ENV_HANDLING
prompt "Compile in default environment"
help
Enabling this option will give you a default environment when
the environment found in the environment sector is invalid
choice
prompt "default compression for in-barebox binaries"
default DEFAULT_COMPRESSION_NONE if PBL_IMAGE
default DEFAULT_COMPRESSION_LZO if LZO_DECOMPRESS
default DEFAULT_COMPRESSION_XZ if XZ_DECOMPRESS
default DEFAULT_COMPRESSION_GZIP if ZLIB
default DEFAULT_COMPRESSION_LZ4 if LZ4_DECOMPRESS
default DEFAULT_COMPRESSION_BZIP2 if BZLIB
help
Select the default compression for in-barebox binary files. Files
compiled into barebox like for example the default environment will
be compressed with this compression type.
config DEFAULT_COMPRESSION_GZIP
bool "gzip"
depends on ZLIB
config DEFAULT_COMPRESSION_BZIP2
bool "bzip2"
depends on BZLIB
config DEFAULT_COMPRESSION_LZO
bool "lzo"
depends on LZO_DECOMPRESS
config DEFAULT_COMPRESSION_LZ4
bool "lz4"
depends on LZ4_DECOMPRESS
config DEFAULT_COMPRESSION_XZ
bool "xz"
depends on XZ_DECOMPRESS
config DEFAULT_COMPRESSION_NONE
bool "no compression"
endchoice
config DEFAULT_ENVIRONMENT_GENERIC_NEW
bool "Generic environment template"
depends on DEFAULT_ENVIRONMENT
depends on SHELL_HUSH
select BOOTM
select COMMAND_SUPPORT
select CMD_GETOPT
select GLOB
select GLOB_SORT
select GLOBALVAR
select CMD_GLOBAL
select CMD_AUTOMOUNT
select CMD_BASENAME
select CMD_READLINK
select CMD_DIRNAME
select CMD_TEST
select NVVAR
select CMD_NV
select FLEXIBLE_BOOTARGS
select CMD_BOOT
select NET_CMD_IFUP if NET
config DEFAULT_ENVIRONMENT_GENERIC
bool "Generic environment template (old version)"
depends on DEFAULT_ENVIRONMENT
depends on !DEFAULT_ENVIRONMENT_GENERIC_NEW
depends on SHELL_HUSH
select COMMAND_SUPPORT
select GLOBALVAR
select CMD_GETOPT
select CMD_CRC
select CMD_CRC_CMP
select CMD_GLOBAL
help
With this option barebox will use the generic default
environment found under defaultenv/ in the src tree.
The Directory given with DEFAULT_ENVIRONMENT_PATH
will be added to the default environment. This should
at least contain a /env/config file.
This will be able to overwrite the files from defaultenv.
config DEFAULT_ENVIRONMENT_GENERIC_NEW_MENU
bool
depends on DEFAULT_ENVIRONMENT_GENERIC_NEW
depends on CMD_MENUTREE
default y
config DEFAULT_ENVIRONMENT_GENERIC_NEW_DFU
bool
depends on DEFAULT_ENVIRONMENT_GENERIC_NEW
depends on USB_GADGET_DFU
default y
config DEFAULT_ENVIRONMENT_PATH
string
depends on DEFAULT_ENVIRONMENT
prompt "Default environment path"
help
Space separated list of paths the default environment will be taken from.
Relative paths will be relative to the barebox Toplevel dir, but absolute
paths are fine aswell.
config BAREBOXENV_TARGET
bool
depends on !SANDBOX
prompt "build bareboxenv tool for target"
help
'bareboxenv' is a tool to access the barebox environment from a running Linux
system. Say yes here to build it for the target.
config BAREBOXCRC32_TARGET
bool
prompt "build bareboxcrc32 tool for target"
depends on !SANDBOX
help
'bareboxcrc32' is a userspacetool to generate the crc32 checksums the same way
barebox does. Say yes here to build it for the target.
config POLLER
bool "generic polling infrastructure"
config STATE
bool "generic state infrastructure"
select CRC32
select ENVIRONMENT_VARIABLES
select OFTREE
select PARAMETER
config STATE_CRYPTO
bool "HMAC based authentication support"
depends on STATE
select CRYPTO_KEYSTORE
select DIGEST
select DIGEST_HMAC_GENERIC
help
This options enables HMAC based authentication support for
the state's header and data. This means the state framework
can verify both the data integrity and the authentication of
the state's header and data.
Don't forget to select a hash algorithm in the
crypto/digests menu.
See Documentation/devicetree/bindings/barebox/barebox,state.rst
for more information.
config STATE_BACKWARD_COMPATIBLE
bool "backward compatible 'direct storage backend'"
depends on STATE
help
With this option enabled the 'direct' storage backend keeps backward
compatibility with older revisions of the state framework. Newer
revisions expect an additional 'meta header' and fail otherwise.
config BOOTCHOOSER
bool "bootchooser infrastructure"
select BOOT
select BOOTM
select ENVIRONMENT_VARIABLES
select OFTREE
select PARAMETER
config RESET_SOURCE
bool "detect Reset cause"
depends on GLOBALVAR
help
Provide a global variable at runtine which reflects the possible cause
of the reset and why the bootloader is currently running. It can be
useful for any kind of system recovery or repair.
endmenu
menu "Debugging"
config COMPILE_LOGLEVEL
int "compile loglevel"
default 6
help
This defines the maximum loglevel compiled into the binary. Less important
messages will be compiled away resulting in a smaller binary.
0 system is unusable (emerg)
1 action must be taken immediately (alert)
2 critical conditions (crit)
3 error conditions (err)
4 warning conditions (warn)
5 normal but significant condition (notice)
6 informational (info)
7 debug-level messages (debug)
8 verbose debug messages (vdebug)
config DEFAULT_LOGLEVEL
int "default loglevel"
default 7
help
This defines the default runtime loglevel. It can be changed using the
global.loglevel variable. Available logelevels are:
0 system is unusable (emerg)
1 action must be taken immediately (alert)
2 critical conditions (crit)
3 error conditions (err)
4 warning conditions (warn)