menu "Boot timing"
config BOOTSTAGE
bool "Boot timing and reporting"
help
Enable recording of boot time while booting. To use it, insert
calls to bootstage_mark() with a suitable BOOTSTAGE_ID from
bootstage.h. Only a single entry is recorded for each ID. You can
give the entry a name with bootstage_mark_name(). You can also
record elapsed time in a particular stage using bootstage_start()
before starting and bootstage_accum() when finished. Bootstage will
add up all the accumulated time and report it.
Normally, IDs are defined in bootstage.h but a small number of
additional 'user' IDs can be used by passing BOOTSTAGE_ID_ALLOC
as the ID.
Calls to show_boot_progress() will also result in log entries but
these will not have names.
config SPL_BOOTSTAGE
bool "Boot timing and reported in SPL"
depends on BOOTSTAGE
help
Enable recording of boot time in SPL. To make this visible to U-Boot
proper, enable BOOTSTAGE_STASH as well. This will stash the timing
information when SPL finishes and load it when U-Boot proper starts
up.
config BOOTSTAGE_REPORT
bool "Display a detailed boot timing report before booting the OS"
depends on BOOTSTAGE
help
Enable output of a boot time report just before the OS is booted.
This shows how long it took U-Boot to go through each stage of the
boot process. The report looks something like this:
Timer summary in microseconds:
Mark Elapsed Stage
0 0 reset
3,575,678 3,575,678 board_init_f start
3,575,695 17 arch_cpu_init A9
3,575,777 82 arch_cpu_init done
3,659,598 83,821 board_init_r start
3,910,375 250,777 main_loop
29,916,167 26,005,792 bootm_start
30,361,327 445,160 start_kernel
config BOOTSTAGE_RECORD_COUNT
int "Number of boot stage records to store"
default 30
help
This is the size of the bootstage record list and is the maximum
number of bootstage records that can be recorded.
config SPL_BOOTSTAGE_RECORD_COUNT
int "Number of boot stage records to store for SPL"
default 5
help
This is the size of the bootstage record list and is the maximum
number of bootstage records that can be recorded.
config BOOTSTAGE_FDT
bool "Store boot timing information in the OS device tree"
depends on BOOTSTAGE
help
Stash the bootstage information in the FDT. A root 'bootstage'
node is created with each bootstage id as a child. Each child
has a 'name' property and either 'mark' containing the
mark time in microseconds, or 'accum' containing the
accumulated time for that bootstage id in microseconds.
For example:
bootstage {
154 {
name = "board_init_f";
mark = <3575678>;
};
170 {
name = "lcd";
accum = <33482>;
};
};
Code in the Linux kernel can find this in /proc/devicetree.
config BOOTSTAGE_STASH
bool "Stash the boot timing information in memory before booting OS"
depends on BOOTSTAGE
help
Some OSes do not support device tree. Bootstage can instead write
the boot timing information in a binary format at a given address.
This happens through a call to bootstage_stash(), typically in
the CPU's cleanup_before_linux() function. You can use the
'bootstage stash' and 'bootstage unstash' commands to do this on
the command line.
config BOOTSTAGE_STASH_ADDR
hex "Address to stash boot timing information"
default 0
help
Provide an address which will not be overwritten by the OS when it
starts, so that it can read this information when ready.
config BOOTSTAGE_STASH_SIZE
hex "Size of boot timing stash region"
default 0x1000
help
This should be large enough to hold the bootstage stash. A value of
4096 (4KiB) is normally plenty.
endmenu
menu "Boot media"
config NOR_BOOT
bool "Support for booting from NOR flash"
depends on NOR
help
Enabling this will make a U-Boot binary that is capable of being
booted via NOR. In this case we will enable certain pinmux early
as the ROM only partially sets up pinmux. We also default to using
NOR for environment.
config NAND_BOOT
bool "Support for booting from NAND flash"
default n
help
Enabling this will make a U-Boot binary that is capable of being
booted via NAND flash. This is not a must, some SoCs need this,
some not.
config ONENAND_BOOT
bool "Support for booting from ONENAND"
default n
help
Enabling this will make a U-Boot binary that is capable of being
booted via ONENAND. This is not a must, some SoCs need this,
some not.
config QSPI_BOOT
bool "Support for booting from QSPI flash"
default n
help
Enabling this will make a U-Boot binary that is capable of being
booted via QSPI flash. This is not a must, some SoCs need this,
some not.
config SATA_BOOT
bool "Support for booting from SATA"
default n
help
Enabling this will make a U-Boot binary that is capable of being
booted via SATA. This is not a must, some SoCs need this,
some not.
config SD_BOOT
bool "Support for booting from SD/EMMC"
default n
help
Enabling this will make a U-Boot binary that is capable of being
booted via SD/EMMC. This is not a must, some SoCs need this,
some not.
config SPI_BOOT
bool "Support for booting from SPI flash"
default n
help
Enabling this will make a U-Boot binary that is capable of being
booted via SPI flash. This is not a must, some SoCs need this,
some not.
endmenu
config BOOTDELAY
int "delay in seconds before automatically booting"
default 2
depends on AUTOBOOT
help
Delay before automatically running bootcmd;
set to 0 to autoboot with no delay, but you can stop it by key input.
set to -1 to disable autoboot.
set to -2 to autoboot with no delay and not check for abort
See doc/README.autoboot for details.
config USE_BOOTARGS
bool "Enable boot arguments"
help
Provide boot arguments to bootm command. Boot arguments are specified
in CONFIG_BOOTARGS option. Enable this option to be able to specify
CONFIG_BOOTARGS string. If this option is disabled, CONFIG_BOOTARGS
will be undefined and won't take any space in U-Boot image.
config BOOTARGS
string "Boot arguments"
depends on USE_BOOTARGS
help
This can be used to pass arguments to the bootm command. The value of
CONFIG_BOOTARGS goes into the environment value "bootargs". Note that
this value will also override the "chosen" node in FDT blob.
config USE_BOOTCOMMAND
bool "Enable a default value for bootcmd"
help
Provide a default value for the bootcmd entry in the environment. If
autoboot is enabled this is what will be run automatically. Enable
this option to be able to specify CONFIG_BOOTCOMMAND as a string. If
this option is disabled, CONFIG_BOOTCOMMAND will be undefined and
won't take any space in U-Boot image.
config BOOTCOMMAND
string "bootcmd value"
depends on USE_BOOTCOMMAND
default "run distro_bootcmd" if DISTRO_DEFAULTS
help
This is the string of commands that will be used as bootcmd and if
AUTOBOOT is set, automatically run.
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_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 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 8
help
All Messages with a loglevel smaller than the console loglevel will
be compiled in. The loglevels are defined as follows:
0 (KERN_EMERG) system is unusable
1 (KERN_ALERT) action must be taken immediately
2 (KERN_CRIT) critical conditions
3 (KERN_ERR) error conditions
4 (KERN_WARNING) warning conditions
5 (KERN_NOTICE) normal but significant condition
6 (KERN_INFO) informational
7 (KERN_DEBUG) debug-level messages
config SPL_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 vaariable '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
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 supress 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.
endmenu
menu "Logging"
config LOG
bool "Enable logging support"
select 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.
config SPL_LOG
bool "Enable logging support in SPL"
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.
config LOG_MAX_LEVEL
int "Maximum log level to record"
depends on LOG
default 5
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 - panic
1 - critical
2 - error
3 - warning
4 - note
5 - info
6 - detail
7 - debug
config SPL_LOG_MAX_LEVEL
int "Maximum log level to record in SPL"
depends on SPL_LOG
default 3
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 - panic
1 - critical
2 - error
3 - warning
4 - note
5 - info
6 - detail
7 - debug
config LOG_CONSOLE
bool "Allow log output to the console"
depends on LOG
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 LOG_SPL_CONSOLE
bool "Allow log output to the console in SPL"
depends on LOG_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.
config LOG_TEST
bool "Provide a test for logging"
depends on LOG
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 varoius settings.
config LOG_ERROR_RETURN
bool "Log all functions which return an error"
depends on LOG
help
When an error is returned in U-Boot it is sometimes difficult to
figure out the root cause. For eaxmple, 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.
endmenu
config SUPPORT_RAW_INITRD
bool "Enable raw initrd images"
help
Note, defining the SUPPORT_RAW_INITRD allows user to supply
kernel with raw initrd images. The syntax is slightly different, the
address of the initrd must be augmented by it's size, in the following
format: "<initrd address>:<initrd size>".
config DEFAULT_FDT_FILE
string "Default fdt file"
help
This option is used to set the default fdt file to boot OS.
config VERSION_VARIABLE
bool "add U-Boot environment variable vers"
default n
help
If this variable is defined, an environment variable
named "ver" is created by U-Boot showing the U-Boot
version as printed by the "version" command.
Any change to this variable will be reverted at the
next reset.
config BOARD_LATE_INIT
bool
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 DISPLAY_CPUINFO
bool "Display information about the CPU during start up"
default y if 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 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.
config ANDROID_BOOTLOADER
bool "Support for Android Bootloader boot flow"
default n
depends on ANDROID_BOOT_IMAGE
help
If enabled, adds support to boot an Android device following the
Android Bootloader boot flow. This flow requires an Android Bootloader
to handle the Android Bootloader Message stored in the Boot Control
Block (BCB), normally in the "misc" partition of an Android device.
The BCB is used to determine the boot mode of the device (normal mode,
recovery mode or bootloader mode) and, if enabled, the slot to boot
from in devices with multiple boot slots (A/B devices).
config ANDROID_AB
bool "Support for 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.
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 relocaiton.
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 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.
endmenu
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.
endmenu
menu "Update support"
config UPDATE_TFTP
bool "Auto-update using fitImage via TFTP"
depends on FIT
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
endmenu
source "common/spl/Kconfig"