u-boot/common/Kconfig

source "common/Kconfig.boot"

menu "Console"

config MENU
	bool
	help
	  This is the library functionality to provide a text-based menu of
	  choices for the user to make choices with.

config CONSOLE_RECORD
	bool "Console recording"
	help
	  This provides a way to record console output (and provide console
	  input) through circular buffers. This is mostly useful for testing.
	  Console output is recorded even when the console is silent.
	  To enable console recording, call console_record_reset_enable()
	  from your code.

config CONSOLE_RECORD_INIT_F
	bool "Enable console recording during pre-relocation init"
	depends on CONSOLE_RECORD && SYS_MALLOC_F
	default y
	help
	  This option enables console recording during pre-relocation init.
	  CONFIG_SYS_MALLOC_F must be enabled to use this feature.

config CONSOLE_RECORD_OUT_SIZE
	hex "Output buffer size"
	depends on CONSOLE_RECORD
	default 0x400 if CONSOLE_RECORD
	help
	  Set the size of the console output buffer. When this fills up, no
	  more data will be recorded until some is removed. The buffer is
	  allocated immediately after the malloc() region is ready.

config CONSOLE_RECORD_IN_SIZE
	hex "Input buffer size"
	depends on CONSOLE_RECORD
	default 0x100 if CONSOLE_RECORD
	help
	  Set the size of the console input buffer. When this contains data,
	  tstc() and getc() will use this in preference to real device input.
	  The buffer is allocated immediately after the malloc() region is
	  ready.

config DISABLE_CONSOLE
	bool "Add functionality to disable console completely"
	help
		Disable console (in & out).

config IDENT_STRING
	string "Board specific string to be added to uboot version string"
	help
	  This options adds the board specific name to u-boot version.

config LOGLEVEL
	int "loglevel"
	default 4
	range 0 10
	help
	  All Messages with a loglevel smaller than the console loglevel will
	  be compiled in. The loglevels are defined as follows:

	    0 - emergency
	    1 - alert
	    2 - critical
	    3 - error
	    4 - warning
	    5 - note
	    6 - info
	    7 - debug
	    8 - debug content
	    9 - debug hardware I/O

config SPL_LOGLEVEL
	int
	default LOGLEVEL

config TPL_LOGLEVEL
	int
	default LOGLEVEL

config SILENT_CONSOLE
	bool "Support a silent console"
	help
	  This option allows the console to be silenced, meaning that no
	  output will appear on the console devices. This is controlled by
	  setting the environment variable 'silent' to a non-empty value.
	  Note this also silences the console when booting Linux.

	  When the console is set up, the variable is checked, and the
	  GD_FLG_SILENT flag is set. Changing the environment variable later
	  will update the flag.

config SILENT_U_BOOT_ONLY
	bool "Only silence the U-Boot console"
	depends on SILENT_CONSOLE
	help
	  Normally when the U-Boot console is silenced, Linux's console is
	  also silenced (assuming the board boots into Linux). This option
	  allows the linux console to operate normally, even if U-Boot's
	  is silenced.

config SILENT_CONSOLE_UPDATE_ON_SET
	bool "Changes to the 'silent' environment variable update immediately"
	depends on SILENT_CONSOLE
	default y if SILENT_CONSOLE
	help
	  When the 'silent' environment variable is changed, update the
	  console silence flag immediately. This allows 'setenv' to be used
	  to silence or un-silence the console.

	  The effect is that any change to the variable will affect the
	  GD_FLG_SILENT flag.

config SILENT_CONSOLE_UPDATE_ON_RELOC
	bool "Allow flags to take effect on relocation"
	depends on SILENT_CONSOLE
	help
	  In some cases the environment is not available until relocation
	  (e.g. NAND). This option makes the value of the 'silent'
	  environment variable take effect at relocation.

config PRE_CONSOLE_BUFFER
	bool "Buffer characters before the console is available"
	help
	  Prior to the console being initialised (i.e. serial UART
	  initialised etc) all console output is silently discarded.
	  Defining CONFIG_PRE_CONSOLE_BUFFER will cause U-Boot to
	  buffer any console messages prior to the console being
	  initialised to a buffer. The buffer is a circular buffer, so
	  if it overflows, earlier output is discarded.

	  Note that this is not currently supported in SPL. It would be
	  useful to be able to share the pre-console buffer with SPL.

config PRE_CON_BUF_SZ
	int "Sets the size of the pre-console buffer"
	depends on PRE_CONSOLE_BUFFER
	default 4096
	help
	  The size of the pre-console buffer affects how much console output
	  can be held before it overflows and starts discarding earlier
	  output. Normally there is very little output at this early stage,
	  unless debugging is enabled, so allow enough for ~10 lines of
	  text.

	  This is a useful feature if you are using a video console and
	  want to see the full boot output on the console. Without this
	  option only the post-relocation output will be displayed.

config PRE_CON_BUF_ADDR
	hex "Address of the pre-console buffer"
	depends on PRE_CONSOLE_BUFFER
	default 0x2f000000 if ARCH_SUNXI && MACH_SUN9I
	default 0x4f000000 if ARCH_SUNXI && !MACH_SUN9I
	default 0x0f000000 if ROCKCHIP_RK3288
	default 0x0f200000 if ROCKCHIP_RK3399
	help
	  This sets the start address of the pre-console buffer. This must
	  be in available memory and is accessed before relocation and
	  possibly before DRAM is set up. Therefore choose an address
	  carefully.

	  We should consider removing this option and allocating the memory
	  in board_init_f_init_reserve() instead.

config CONSOLE_MUX
	bool "Enable console multiplexing"
	default y if DM_VIDEO || VIDEO || LCD
	help
	  This allows multiple devices to be used for each console 'file'.
	  For example, stdout can be set to go to serial and video.
	  Similarly, stdin can be set to come from serial and keyboard.
	  Input can be provided from either source. Console multiplexing
	  adds a small amount of size to U-Boot.  Changes to the environment
	  variables stdout, stdin and stderr will take effect immediately.

config SYS_CONSOLE_IS_IN_ENV
	bool "Select console devices from the environment"
	default y if CONSOLE_MUX
	help
	  This allows multiple input/output devices to be set at boot time.
	  For example, if stdout is set to "serial,video" then output will
	  be sent to both the serial and video devices on boot. The
	  environment variables can be updated after boot to change the
	  input/output devices.

config SYS_CONSOLE_OVERWRITE_ROUTINE
	bool "Allow board control over console overwriting"
	help
	  If this is enabled, and the board-specific function
	  overwrite_console() returns 1, the stdin, stderr and stdout are
	  switched to the serial port, else the settings in the environment
	  are used. If this is not enabled, the console will not be switched
	  to serial.

config SYS_CONSOLE_ENV_OVERWRITE
	bool "Update environment variables during console init"
	help
	  The console environment variables (stdout, stdin, stderr) can be
	  used to determine the correct console devices on start-up. This
	  option writes the console devices to these variables on console
	  start-up (after relocation). This causes the environment to be
	  updated to match the console devices actually chosen.

config SYS_CONSOLE_INFO_QUIET
	bool "Don't display the console devices on boot"
	help
	  Normally U-Boot displays the current settings for stdout, stdin
	  and stderr on boot when the post-relocation console is set up.
	  Enable this option to suppress this output. It can be obtained by
	  calling stdio_print_current_devices() from board code.

config SYS_STDIO_DEREGISTER
	bool "Allow deregistering stdio devices"
	default y if USB_KEYBOARD
	help
	  Generally there is no need to deregister stdio devices since they
	  are never deactivated. But if a stdio device is used which can be
	  removed (for example a USB keyboard) then this option can be
	  enabled to ensure this is handled correctly.

config SPL_SYS_STDIO_DEREGISTER
	bool "Allow deregistering stdio devices in SPL"
	help
	  Generally there is no need to deregister stdio devices since they
	  are never deactivated. But if a stdio device is used which can be
	  removed (for example a USB keyboard) then this option can be
	  enabled to ensure this is handled correctly. This is very rarely
	  needed in SPL.

config SYS_DEVICE_NULLDEV
	bool "Enable a null device for stdio"
	default y if SPLASH_SCREEN || SYS_STDIO_DEREGISTER
	help
	  Enable creation of a "nulldev" stdio device. This allows silent
	  operation of the console by setting stdout to "nulldev". Enable
	  this to use a serial console under board control.

endmenu

menu "Logging"

config LOG
	bool "Enable logging support"
	depends on DM
	help
	  This enables support for logging of status and debug messages. These
	  can be displayed on the console, recorded in a memory buffer, or
	  discarded if not needed. Logging supports various categories and
	  levels of severity.

if LOG

config LOG_MAX_LEVEL
	int "Maximum log level to record"
	default 6
	range 0 9
	help
	  This selects the maximum log level that will be recorded. Any value
	  higher than this will be ignored. If possible log statements below
	  this level will be discarded at build time. Levels:

	    0 - emergency
	    1 - alert
	    2 - critical
	    3 - error
	    4 - warning
	    5 - note
	    6 - info
	    7 - debug
	    8 - debug content
	    9 - debug hardware I/O

config LOG_DEFAULT_LEVEL
	int "Default logging level to display"
	default LOG_MAX_LEVEL
	range 0 LOG_MAX_LEVEL
	help
	  This is the default logging level set when U-Boot starts. It can
	  be adjusted later using the 'log level' command. Note that setting
	  this to a value above LOG_MAX_LEVEL will be ineffective, since the
	  higher levels are not compiled in to U-Boot.

	    0 - emergency
	    1 - alert
	    2 - critical
	    3 - error
	    4 - warning
	    5 - note
	    6 - info
	    7 - debug
	    8 - debug content
	    9 - debug hardware I/O

config LOG_CONSOLE
	bool "Allow log output to the console"
	default y
	help
	  Enables a log driver which writes log records to the console.
	  Generally the console is the serial port or LCD display. Only the
	  log message is shown - other details like level, category, file and
	  line number are omitted.

config LOGF_FILE
	bool "Show source file name in log messages by default"
	help
	  Show the source file name in log messages by default. This value
	  can be overridden using the 'log format' command.

config LOGF_LINE
	bool "Show source line number in log messages by default"
	help
	  Show the source line number in log messages by default. This value
	  can be overridden using the 'log format' command.

config LOGF_FUNC
	bool "Show function name in log messages by default"
	help
	  Show the function name in log messages by default. This value can
	  be overridden using the 'log format' command.

config LOG_SYSLOG
	bool "Log output to syslog server"
	depends on NET
	help
	  Enables a log driver which broadcasts log records via UDP port 514
	  to syslog servers.

config SPL_LOG
	bool "Enable logging support in SPL"
	depends on LOG
	help
	  This enables support for logging of status and debug messages. These
	  can be displayed on the console, recorded in a memory buffer, or
	  discarded if not needed. Logging supports various categories and
	  levels of severity.

if SPL_LOG

config SPL_LOG_MAX_LEVEL
	int "Maximum log level to record in SPL"
	depends on SPL_LOG
	default 3
	range 0 9
	help
	  This selects the maximum log level that will be recorded. Any value
	  higher than this will be ignored. If possible log statements below
	  this level will be discarded at build time. Levels:

	    0 - emergency
	    1 - alert
	    2 - critical
	    3 - error
	    4 - warning
	    5 - note
	    6 - info
	    7 - debug
	    8 - debug content
	    9 - debug hardware I/O

config SPL_LOG_CONSOLE
	bool "Allow log output to the console in SPL"
	default y
	help
	  Enables a log driver which writes log records to the console.
	  Generally the console is the serial port or LCD display. Only the
	  log message is shown - other details like level, category, file and
	  line number are omitted.

endif

config TPL_LOG
	bool "Enable logging support in TPL"
	depends on LOG
	help
	  This enables support for logging of status and debug messages. These
	  can be displayed on the console, recorded in a memory buffer, or
	  discarded if not needed. Logging supports various categories and
	  levels of severity.

if TPL_LOG

config TPL_LOG_MAX_LEVEL
	int "Maximum log level to record in TPL"
	depends on TPL_LOG
	default 3
	range 0 9
	help
	  This selects the maximum log level that will be recorded. Any value
	  higher than this will be ignored. If possible log statements below
	  this level will be discarded at build time. Levels:

	    0 - emergency
	    1 - alert
	    2 - critical
	    3 - error
	    4 - warning
	    5 - note
	    6 - info
	    7 - debug
	    8 - debug content
	    9 - debug hardware I/O

config TPL_LOG_CONSOLE
	bool "Allow log output to the console in TPL"
	default y
	help
	  Enables a log driver which writes log records to the console.
	  Generally the console is the serial port or LCD display. Only the
	  log message is shown - other details like level, category, file and
	  line number are omitted.

endif

config LOG_ERROR_RETURN
	bool "Log all functions which return an error"
	help
	  When an error is returned in U-Boot it is sometimes difficult to
	  figure out the root cause. For example, reading from SPI flash may
	  fail due to a problem in the SPI controller or due to the flash part
	  not returning the expected information. This option changes
	  log_ret() to log any errors it sees. With this option disabled,
	  log_ret() is a nop.

	  You can add log_ret() to all functions which return an error code.

config LOG_TEST
	bool "Provide a test for logging"
	depends on UNIT_TEST
	default y if SANDBOX
	help
	  This enables a 'log test' command to test logging. It is normally
	  executed from a pytest and simply outputs logging information
	  in various different ways to test that the logging system works
	  correctly with various settings.

endif

endmenu

menu "Init options"

config BOARD_TYPES
	bool "Call get_board_type() to get and display the board type"
	help
	  If this option is enabled, checkboard() will call get_board_type()
	  to get a string containing the board type and this will be
	  displayed immediately after the model is shown on the console
	  early in boot.

config DISPLAY_CPUINFO
	bool "Display information about the CPU during start up"
	default y if ARC|| ARM || NIOS2 || X86 || XTENSA || M68K
	help
	  Display information about the CPU that U-Boot is running on
	  when U-Boot starts up. The function print_cpuinfo() is called
	  to do this.

config DISPLAY_BOARDINFO
	bool "Display information about the board during early start up"
	default y if ARC || ARM || M68K || MIPS || PPC || SANDBOX || XTENSA
	help
	  Display information about the board that U-Boot is running on
	  when U-Boot starts up. The board function checkboard() is called
	  to do this.

config DISPLAY_BOARDINFO_LATE
	bool "Display information about the board during late start up"
	help
	  Display information about the board that U-Boot is running on after
	  the relocation phase. The board function checkboard() is called to do
	  this.

menu "Start-up hooks"

config ARCH_EARLY_INIT_R
	bool "Call arch-specific init soon after relocation"
	help
	  With this option U-Boot will call arch_early_init_r() soon after
	  relocation. Driver model is running by this point, and the cache
	  is on. Note that board_early_init_r() is called first, if
	  enabled. This can be used to set up architecture-specific devices.

config ARCH_MISC_INIT
	bool "Call arch-specific init after relocation, when console is ready"
	help
	  With this option U-Boot will call arch_misc_init() after
	  relocation to allow miscellaneous arch-dependent initialisation
	  to be performed. This function should be defined by the board
	  and will be called after the console is set up, after relocation.

config BOARD_EARLY_INIT_F
	bool "Call board-specific init before relocation"
	help
	  Some boards need to perform initialisation as soon as possible
	  after boot. With this option, U-Boot calls board_early_init_f()
	  after driver model is ready in the pre-relocation init sequence.
	  Note that the normal serial console is not yet set up, but the
	  debug UART will be available if enabled.

config BOARD_EARLY_INIT_R
	bool "Call board-specific init after relocation"
	help
	  Some boards need to perform initialisation as directly after
	  relocation. With this option, U-Boot calls board_early_init_r()
	  in the post-relocation init sequence.

config BOARD_LATE_INIT
	bool "Execute Board late init"
	help
	  Sometimes board require some initialization code that might
	  require once the actual init done, example saving board specific env,
	  boot-modes etc. which eventually done at late.

	  So this config enable the late init code with the help of board_late_init
	  function which should defined on respective boards.

config LAST_STAGE_INIT
	bool "Call board-specific as last setup step"
	help
	  Some boards need to perform initialisation immediately before control
	  is passed to the command-line interpreter (e.g. for initializations
	  that depend on later phases in the init sequence). With this option,
	  U-Boot calls last_stage_init() before the command-line interpreter is
	  started.

config MISC_INIT_F
	bool "Execute pre-relocation misc init"
	help
	  Enabling this option calls the 'misc_init_f' function in the init
	  sequence just before DRAM is inited.

config MISC_INIT_R
	bool "Execute Misc Init"
	default y if ARCH_KEYSTONE || ARCH_SUNXI || MPC85xx
	default y if ARCH_OMAP2PLUS && !AM33XX
	help
	  Enabling this option calls 'misc_init_r' function

config PCI_INIT_R
	bool "Enumerate PCI buses during init"
	depends on PCI
	default y if !DM_PCI
	help
	  With this option U-Boot will call pci_init() soon after relocation,
	  which will enumerate PCI buses. This is needed, for instance, in the
	  case of DM PCI-based Ethernet devices, which will not be detected
	  without having the enumeration performed earlier.

endmenu

endmenu		# Init options

menu "Security support"

config HASH
	bool # "Support hashing API (SHA1, SHA256, etc.)"
	help
	  This provides a way to hash data in memory using various supported
	  algorithms (such as SHA1, MD5, CRC32). The API is defined in hash.h
	  and the algorithms it supports are defined in common/hash.c. See
	  also CMD_HASH for command-line access.

config AVB_VERIFY
	bool "Build Android Verified Boot operations"
	depends on LIBAVB
	depends on MMC
	depends on PARTITION_UUIDS
	help
	  This option enables compilation of bootloader-dependent operations,
	  used by Android Verified Boot 2.0 library (libavb). Includes:
	    * Helpers to process strings in order to build OS bootargs.
	    * Helpers to access MMC, similar to drivers/fastboot/fb_mmc.c.
	    * Helpers to alloc/init/free avb ops.

if AVB_VERIFY

config AVB_BUF_ADDR
	hex "Define AVB buffer address"
	default FASTBOOT_BUF_ADDR
	help
	  AVB requires a buffer for memory transactions. This variable defines the
	  buffer address.

config AVB_BUF_SIZE
	hex "Define AVB buffer SIZE"
	default FASTBOOT_BUF_SIZE
	help
	  AVB requires a buffer for memory transactions. This variable defines the
	  buffer size.

endif # AVB_VERIFY

config SCP03
	bool "Build SCP03 - Secure Channel Protocol O3 - controls"
	depends on OPTEE || SANDBOX
	depends on TEE
	help
	  This option allows U-Boot to enable and or provision SCP03 on an OPTEE
	  controlled Secured Element.

config SPL_HASH
	bool # "Support hashing API (SHA1, SHA256, etc.)"
	help
	  This provides a way to hash data in memory using various supported
	  algorithms (such as SHA1, MD5, CRC32). The API is defined in hash.h
	  and the algorithms it supports are defined in common/hash.c. See
	  also CMD_HASH for command-line access.

config TPL_HASH
	bool # "Support hashing API (SHA1, SHA256, etc.)"
	help
	  This provides a way to hash data in memory using various supported
	  algorithms (such as SHA1, MD5, CRC32). The API is defined in hash.h
	  and the algorithms it supports are defined in common/hash.c. See
	  also CMD_HASH for command-line access.

config STACKPROTECTOR
	bool "Stack Protector buffer overflow detection"
	default n
	help
	  Enable stack smash detection through compiler's stack-protector
	  canary logic

config SPL_STACKPROTECTOR
	bool "Stack Protector buffer overflow detection for SPL"
	depends on STACKPROTECTOR && SPL
	default n

config TPL_STACKPROTECTOR
	bool "Stack Protector buffer overflow detection for TPL"
	depends on STACKPROTECTOR && TPL
	default n

endmenu

menu "Update support"

config UPDATE_COMMON
	bool
	default n
	select DFU_WRITE_ALT

config UPDATE_TFTP
	bool "Auto-update using fitImage via TFTP"
	depends on FIT
	select UPDATE_COMMON
	help
	  This option allows performing update of NOR with data in fitImage
	  sent via TFTP boot.

config UPDATE_TFTP_CNT_MAX
	int "The number of connection retries during auto-update"
	default 0
	depends on UPDATE_TFTP

config UPDATE_TFTP_MSEC_MAX
	int "Delay in mSec to wait for the TFTP server during auto-update"
	default 100
	depends on UPDATE_TFTP

config UPDATE_FIT
	bool "Firmware update using fitImage"
	depends on FIT
	depends on DFU
	select UPDATE_COMMON
	help
	  This option allows performing update of DFU-capable storage with
	  data in fitImage.

config ANDROID_AB
	bool "Android A/B updates"
	default n
	help
	  If enabled, adds support for the new Android A/B update model. This
	  allows the bootloader to select which slot to boot from based on the
	  information provided by userspace via the Android boot_ctrl HAL. This
	  allows a bootloader to try a new version of the system but roll back
	  to previous version if the new one didn't boot all the way.

endmenu

menu "Blob list"

config BLOBLIST
	bool "Support for a bloblist"
	help
	  This enables support for a bloblist in U-Boot, which can be passed
	  from TPL to SPL to U-Boot proper (and potentially to Linux). The
	  blob list supports multiple binary blobs of data, each with a tag,
	  so that different U-Boot components can store data which can survive
	  through to the next stage of the boot.

config SPL_BLOBLIST
	bool "Support for a bloblist in SPL"
	depends on BLOBLIST
	default y if SPL
	help
	  This enables a bloblist in SPL. If this is the first part of U-Boot
	  to run, then the bloblist is set up in SPL and passed to U-Boot
	  proper. If TPL also has a bloblist, then SPL uses the one from there.

config TPL_BLOBLIST
	bool "Support for a bloblist in TPL"
	depends on BLOBLIST
	default y if TPL
	help
	  This enables a bloblist in TPL. The bloblist is set up in TPL and
	  passed to SPL and U-Boot proper.

config BLOBLIST_SIZE
	hex "Size of bloblist"
	depends on BLOBLIST
	default 0x400
	help
	  Sets the size of the bloblist in bytes. This must include all
	  overhead (alignment, bloblist header, record header). The bloblist
	  is set up in the first part of U-Boot to run (TPL, SPL or U-Boot
	  proper), and this sane bloblist is used for subsequent stages.

config BLOBLIST_ADDR
	hex "Address of bloblist"
	depends on BLOBLIST
	default 0xe000 if SANDBOX
	help
	  Sets the address of the bloblist, set up by the first part of U-Boot
	  which runs. Subsequent U-Boot stages typically use the same address.

config BLOBLIST_SIZE_RELOC
	hex "Size of bloblist after relocation"
	depends on BLOBLIST
	default BLOBLIST_SIZE
	help
	  Sets the size of the bloblist in bytes after relocation. Since U-Boot
	  has a lot more memory available then, it is possible to use a larger
	  size than the one set up by SPL. This bloblist is set up during the
	  relocation process.

endmenu

source "common/spl/Kconfig"

config IMAGE_SIGN_INFO
	bool
	select SHA1
	select SHA256
	help
	  Enable image_sign_info helper functions.

if IMAGE_SIGN_INFO

config SPL_IMAGE_SIGN_INFO
	bool
	select SHA1
	select SHA256
	help
	  Enable image_sign_info helper functions in SPL.

endif