6 This is the library functionality to provide a text-based menu of
7 choices for the user to make choices with.
10 bool "Console recording"
12 This provides a way to record console output (and provide console
13 input) through circular buffers. This is mostly useful for testing.
14 Console output is recorded even when the console is silent.
15 To enable console recording, call console_record_reset_enable()
18 config CONSOLE_RECORD_INIT_F
19 bool "Enable console recording during pre-relocation init"
20 depends on CONSOLE_RECORD && SYS_MALLOC_F
23 This option enables console recording during pre-relocation init.
24 CONFIG_SYS_MALLOC_F must be enabled to use this feature.
26 config CONSOLE_RECORD_OUT_SIZE
27 hex "Output buffer size"
28 depends on CONSOLE_RECORD
29 default 0x400 if CONSOLE_RECORD
31 Set the size of the console recording output buffer. When this fills
32 up, no more data will be recorded until some is removed. The buffer
33 is allocated immediately after the malloc() region is ready.
35 config CONSOLE_RECORD_OUT_SIZE_F
36 hex "Output buffer size before relocation"
37 depends on CONSOLE_RECORD
38 default 0x400 if CONSOLE_RECORD
40 Set the size of the console recording output buffer before
41 relocation. When this fills up, no more data will be recorded until
42 some is removed. The buffer is allocated immediately after the early
43 malloc() region is ready.
45 config CONSOLE_RECORD_IN_SIZE
46 hex "Input buffer size"
47 depends on CONSOLE_RECORD
48 default 0x100 if CONSOLE_RECORD
50 Set the size of the console recording input buffer. When this contains data,
51 tstc() and getc() will use this in preference to real device input.
52 The buffer is allocated immediately after the malloc() region is
56 int "Console input buffer size"
57 default 2048 if ARCH_TEGRA || ARCH_VERSAL || ARCH_ZYNQ || ARCH_ZYNQMP || \
58 RCAR_GEN3 || TARGET_SOCFPGA_SOC64
59 default 512 if ARCH_MX5 || ARCH_MX6 || ARCH_MX7 || FSL_LSCH2 || \
61 default 256 if M68K || PPC
64 Set the size of the console input buffer. This is used both in the
65 case of reading input literally from the user in some manner as well
66 as when we need to construct or modify that type of input, for
67 example when constructing "bootargs" for the OS.
70 int "Console output buffer size"
71 default 1024 if ARCH_SUNXI
74 Set the size of the console output buffer. This is used when we need
75 to work with some form of a buffer while providing output in some
78 config DISABLE_CONSOLE
79 bool "Add functionality to disable console completely"
81 Disable console (in & out).
84 string "Board specific string to be added to uboot version string"
86 This options adds the board specific name to u-boot version.
93 All Messages with a loglevel smaller than the console loglevel will
94 be compiled in. The loglevels are defined as follows:
105 9 - debug hardware I/O
118 int "loglevel for VPL"
122 All Messages with a loglevel smaller than the console loglevel will
123 be compiled in to VPL. See LOGLEVEL for a list of available log
124 levels. Setting this to a value above 4 may increase the code size
127 config SILENT_CONSOLE
128 bool "Support a silent console"
130 This option allows the console to be silenced, meaning that no
131 output will appear on the console devices. This is controlled by
132 setting the environment variable 'silent' to a non-empty value.
133 Note this also silences the console when booting Linux.
135 When the console is set up, the variable is checked, and the
136 GD_FLG_SILENT flag is set. Changing the environment variable later
137 will update the flag.
139 config SPL_SILENT_CONSOLE
140 bool "Use a silent console in SPL"
141 default y if SILENT_CONSOLE && !SANDBOX
143 This selects a silent console in SPL. When enabled it drops some
144 output messages. The GD_FLG_SILENT flag is not used in SPL so there
145 is no run-time control of console messages in SPL.
147 Future work may allow the SPL console to be silenced completely using
150 config TPL_SILENT_CONSOLE
151 bool "Use a silent console in TPL"
152 default y if SILENT_CONSOLE && !SANDBOX
154 This selects a silent console in TPL. When enabled it drops some
155 output messages. The GD_FLG_SILENT flag is not used in TPL so there
156 is no run-time control of console messages in TPL.
158 Future work may allow the TPL console to be silenced completely using
161 config SILENT_U_BOOT_ONLY
162 bool "Only silence the U-Boot console"
163 depends on SILENT_CONSOLE
165 Normally when the U-Boot console is silenced, Linux's console is
166 also silenced (assuming the board boots into Linux). This option
167 allows the linux console to operate normally, even if U-Boot's
170 config SILENT_CONSOLE_UPDATE_ON_SET
171 bool "Changes to the 'silent' environment variable update immediately"
172 depends on SILENT_CONSOLE
173 default y if SILENT_CONSOLE
175 When the 'silent' environment variable is changed, update the
176 console silence flag immediately. This allows 'setenv' to be used
177 to silence or un-silence the console.
179 The effect is that any change to the variable will affect the
182 config SILENT_CONSOLE_UPDATE_ON_RELOC
183 bool "Allow flags to take effect on relocation"
184 depends on SILENT_CONSOLE
186 In some cases the environment is not available until relocation
187 (e.g. NAND). This option makes the value of the 'silent'
188 environment variable take effect at relocation.
190 config SILENT_CONSOLE_UNTIL_ENV
191 bool "Keep console silent until environment is loaded"
192 depends on SILENT_CONSOLE
194 This option makes sure U-Boot will never use the console unless the
195 environment from flash does not contain the 'silent' variable. If
196 set, the console is kept silent until after the environment was
197 loaded. Use this in combination with PRE_CONSOLE_BUFFER to print out
198 earlier messages after loading the environment when allowed.
200 config PRE_CONSOLE_BUFFER
201 bool "Buffer characters before the console is available"
203 Prior to the console being initialised (i.e. serial UART
204 initialised etc) all console output is silently discarded.
205 Defining CONFIG_PRE_CONSOLE_BUFFER will cause U-Boot to
206 buffer any console messages prior to the console being
207 initialised to a buffer. The buffer is a circular buffer, so
208 if it overflows, earlier output is discarded.
210 Note that this is not currently supported in SPL. It would be
211 useful to be able to share the pre-console buffer with SPL.
213 config PRE_CON_BUF_SZ
214 int "Sets the size of the pre-console buffer"
215 depends on PRE_CONSOLE_BUFFER
218 The size of the pre-console buffer affects how much console output
219 can be held before it overflows and starts discarding earlier
220 output. Normally there is very little output at this early stage,
221 unless debugging is enabled, so allow enough for ~10 lines of
224 This is a useful feature if you are using a video console and
225 want to see the full boot output on the console. Without this
226 option only the post-relocation output will be displayed.
228 config PRE_CON_BUF_ADDR
229 hex "Address of the pre-console buffer"
230 depends on PRE_CONSOLE_BUFFER
231 default 0x2f000000 if ARCH_SUNXI && MACH_SUN9I
232 default 0x4f000000 if ARCH_SUNXI && !MACH_SUN9I
233 default 0x0f000000 if ROCKCHIP_RK3288
234 default 0x0f200000 if ROCKCHIP_RK3399 || ROCKCHIP_RK3328
236 This sets the start address of the pre-console buffer. This must
237 be in available memory and is accessed before relocation and
238 possibly before DRAM is set up. Therefore choose an address
241 We should consider removing this option and allocating the memory
242 in board_init_f_init_reserve() instead.
244 config CONSOLE_FLUSH_SUPPORT
245 bool "Enable console flush support"
248 This enables compilation of flush() function for console flush support.
250 config CONSOLE_FLUSH_ON_NEWLINE
251 bool "Flush console buffer on every newline character"
254 This makes the serial core code flush the console device
255 whenever a newline (\n) character has been emitted. This can
256 be especially useful when "printf debugging", as otherwise
257 lots of output could still be in the UART's FIFO by the time
258 one hits the code which causes the CPU to hang or reset.
261 bool "Enable console multiplexing"
262 default y if VIDEO || LCD
264 This allows multiple devices to be used for each console 'file'.
265 For example, stdout can be set to go to serial and video.
266 Similarly, stdin can be set to come from serial and keyboard.
267 Input can be provided from either source. Console multiplexing
268 adds a small amount of size to U-Boot. Changes to the environment
269 variables stdout, stdin and stderr will take effect immediately.
271 config SYS_CONSOLE_IS_IN_ENV
272 bool "Select console devices from the environment"
273 default y if CONSOLE_MUX
275 This allows multiple input/output devices to be set at boot time.
276 For example, if stdout is set to "serial,vidconsole" then output
277 will be sent to both the serial and video devices on boot. The
278 environment variables can be updated after boot to change the
279 input/output devices.
281 config SYS_CONSOLE_OVERWRITE_ROUTINE
282 bool "Allow board control over console overwriting"
284 If this is enabled, and the board-specific function
285 overwrite_console() returns 1, the stdin, stderr and stdout are
286 switched to the serial port, else the settings in the environment
287 are used. If this is not enabled, the console will not be switched
290 config SYS_CONSOLE_ENV_OVERWRITE
291 bool "Update environment variables during console init"
292 depends on SYS_CONSOLE_IS_IN_ENV
294 The console environment variables (stdout, stdin, stderr) can be
295 used to determine the correct console devices on start-up. This
296 option writes the console devices to these variables on console
297 start-up (after relocation). This causes the environment to be
298 updated to match the console devices actually chosen.
300 config SYS_CONSOLE_INFO_QUIET
301 bool "Don't display the console devices on boot"
303 Normally U-Boot displays the current settings for stdout, stdin
304 and stderr on boot when the post-relocation console is set up.
305 Enable this option to suppress this output. It can be obtained by
306 calling stdio_print_current_devices() from board code.
308 config SYS_STDIO_DEREGISTER
309 bool "Allow deregistering stdio devices"
310 default y if USB_KEYBOARD
312 Generally there is no need to deregister stdio devices since they
313 are never deactivated. But if a stdio device is used which can be
314 removed (for example a USB keyboard) then this option can be
315 enabled to ensure this is handled correctly.
317 config SPL_SYS_STDIO_DEREGISTER
318 bool "Allow deregistering stdio devices in SPL"
320 Generally there is no need to deregister stdio devices since they
321 are never deactivated. But if a stdio device is used which can be
322 removed (for example a USB keyboard) then this option can be
323 enabled to ensure this is handled correctly. This is very rarely
326 config SYS_DEVICE_NULLDEV
327 bool "Enable a null device for stdio"
328 default y if SPLASH_SCREEN || SYS_STDIO_DEREGISTER
330 Enable creation of a "nulldev" stdio device. This allows silent
331 operation of the console by setting stdout to "nulldev". Enable
332 this to use a serial console under board control.
339 bool "Enable logging support"
342 This enables support for logging of status and debug messages. These
343 can be displayed on the console, recorded in a memory buffer, or
344 discarded if not needed. Logging supports various categories and
350 int "Maximum log level to record"
354 This selects the maximum log level that will be recorded. Any value
355 higher than this will be ignored. If possible log statements below
356 this level will be discarded at build time. Levels:
367 9 - debug hardware I/O
369 config LOG_DEFAULT_LEVEL
370 int "Default logging level to display"
371 default LOG_MAX_LEVEL
372 range 0 LOG_MAX_LEVEL
374 This is the default logging level set when U-Boot starts. It can
375 be adjusted later using the 'log level' command. Note that setting
376 this to a value above LOG_MAX_LEVEL will be ineffective, since the
377 higher levels are not compiled in to U-Boot.
388 9 - debug hardware I/O
391 bool "Allow log output to the console"
394 Enables a log driver which writes log records to the console.
395 Generally the console is the serial port or LCD display. Only the
396 log message is shown - other details like level, category, file and
397 line number are omitted.
400 bool "Show source file name in log messages by default"
402 Show the source file name in log messages by default. This value
403 can be overridden using the 'log format' command.
406 bool "Show source line number in log messages by default"
408 Show the source line number in log messages by default. This value
409 can be overridden using the 'log format' command.
412 bool "Show function name in log messages by default"
414 Show the function name in log messages by default. This value can
415 be overridden using the 'log format' command.
418 int "Number of characters to use for function"
421 Sets the field width to use when showing the function. Set this to
422 a larger value if you have lots of long function names, and want
426 bool "Log output to syslog server"
429 Enables a log driver which broadcasts log records via UDP port 514
433 bool "Enable logging support in SPL"
434 depends on LOG && SPL
436 This enables support for logging of status and debug messages. These
437 can be displayed on the console, recorded in a memory buffer, or
438 discarded if not needed. Logging supports various categories and
443 config SPL_LOG_MAX_LEVEL
444 int "Maximum log level to record in SPL"
449 This selects the maximum log level that will be recorded. Any value
450 higher than this will be ignored. If possible log statements below
451 this level will be discarded at build time. Levels:
462 9 - debug hardware I/O
464 config SPL_LOG_CONSOLE
465 bool "Allow log output to the console in SPL"
468 Enables a log driver which writes log records to the console.
469 Generally the console is the serial port or LCD display. Only the
470 log message is shown - other details like level, category, file and
471 line number are omitted.
476 bool "Enable logging support in TPL"
477 depends on LOG && TPL
479 This enables support for logging of status and debug messages. These
480 can be displayed on the console, recorded in a memory buffer, or
481 discarded if not needed. Logging supports various categories and
486 config TPL_LOG_MAX_LEVEL
487 int "Maximum log level to record in TPL"
492 This selects the maximum log level that will be recorded. Any value
493 higher than this will be ignored. If possible log statements below
494 this level will be discarded at build time. Levels:
505 9 - debug hardware I/O
507 config TPL_LOG_CONSOLE
508 bool "Allow log output to the console in TPL"
511 Enables a log driver which writes log records to the console.
512 Generally the console is the serial port or LCD display. Only the
513 log message is shown - other details like level, category, file and
514 line number are omitted.
519 bool "Enable logging support in VPL"
520 depends on LOG && VPL
522 This enables support for logging of status and debug messages. These
523 can be displayed on the console, recorded in a memory buffer, or
524 discarded if not needed. Logging supports various categories and
529 config VPL_LOG_MAX_LEVEL
530 int "Maximum log level to record in VPL"
533 This selects the maximum log level that will be recorded. Any value
534 higher than this will be ignored. If possible log statements below
535 this level will be discarded at build time. Levels:
546 9 - debug hardware I/O
548 config VPL_LOG_CONSOLE
549 bool "Allow log output to the console in VPL"
552 Enables a log driver which writes log records to the console.
553 Generally the console is the serial port or LCD display. Only the
554 log message is shown - other details like level, category, file and
555 line number are omitted.
559 config LOG_ERROR_RETURN
560 bool "Log all functions which return an error"
562 When an error is returned in U-Boot it is sometimes difficult to
563 figure out the root cause. For example, reading from SPI flash may
564 fail due to a problem in the SPI controller or due to the flash part
565 not returning the expected information. This option changes
566 log_ret() to log any errors it sees. With this option disabled,
569 You can add log_ret() to all functions which return an error code.
572 bool "Provide a test for logging"
576 This enables a 'log test' command to test logging. It is normally
577 executed from a pytest and simply outputs logging information
578 in various different ways to test that the logging system works
579 correctly with various settings.
588 bool "Enable board_type entry in global data struct"
590 If this option is enabled, a field will be added to the global
591 data struct to store an unsigned long value for the type of
592 platform that we have determined we are on, at run-time.
594 config DISPLAY_CPUINFO
595 bool "Display information about the CPU during start up"
596 default y if ARC || ARM || NIOS2 || X86 || XTENSA || M68K
598 Display information about the CPU that U-Boot is running on
599 when U-Boot starts up. The function print_cpuinfo() is called
602 config DISPLAY_BOARDINFO
603 bool "Display information about the board during early start up"
604 default y if ARC || ARM || M68K || MIPS || PPC || SANDBOX || XTENSA
606 Display information about the board that U-Boot is running on
607 when U-Boot starts up. The board function checkboard() is called
610 config DISPLAY_BOARDINFO_LATE
611 bool "Display information about the board during late start up"
613 Display information about the board that U-Boot is running on after
614 the relocation phase. The board function checkboard() is called to do
617 menu "Start-up hooks"
620 bool "General-purpose cyclic execution mechanism"
622 This enables a general-purpose cyclic execution infrastructure,
623 to allow "small" (run-time wise) functions to be executed at
624 a specified frequency. Things like LED blinking or watchdog
625 triggering are examples for such tasks.
630 bool "General-purpose cyclic execution mechanism (SPL)"
632 This enables a general-purpose cyclic execution infrastructure in SPL,
633 to allow "small" (run-time wise) functions to be executed at
634 a specified frequency. Things like LED blinking or watchdog
635 triggering are examples for such tasks.
637 config CYCLIC_MAX_CPU_TIME_US
638 int "Sets the max allowed time for a cyclic function in us"
639 default 100000 if SANDBOX # sandbox video is quite slow
642 The max allowed time for a cyclic function in us. If a functions
643 takes longer than this duration this function will get unregistered
651 This adds a framework for general purpose sending and processing of
652 events, to allow interested parties to be alerted when something
653 happens. This is an attempt to stem the flow of weak functions,
654 hooks, functions in board_f.c and board_r.c and the Kconfig options
657 See doc/develop/event.rst for more information.
664 Enable this to support adding an event spy at runtime, without adding
665 it to the EVENT_SPY*() linker list. This increases code size slightly
666 but provides more flexibility for boards and subsystems that need it.
669 bool "Enable event debugging assistance"
672 Enable this to get useful features for seeing what is happening with
673 events, such as event-type names. This adds to the code size of
674 U-Boot so can be turned off for production builds.
677 bool # General-purpose event-handling mechanism in SPL
680 This adds a framework for general purpose sending and processing of
681 events, to allow interested parties to be alerted when something
682 happens. This is an attempt to stem the flow of weak functions,
683 hooks, functions in board_f.c and board_r.c and the Kconfig options
686 See doc/develop/event.rst for more information.
688 config SPL_EVENT_DYNAMIC
690 depends on SPL_EVENT && EVENT_DYNAMIC
692 Enable this to support adding an event spy at runtime, without adding
693 it to the EVENT_SPY*() linker list. This increases code size slightly
694 but provides more flexibility for boards and subsystems that need it.
698 config ARCH_EARLY_INIT_R
701 With this option U-Boot will call arch_early_init_r() soon after
702 relocation. Driver model is running by this point, and the cache
703 is on. Note that board_early_init_r() is called first, if
704 enabled. This can be used to set up architecture-specific devices.
706 config ARCH_MISC_INIT
707 bool "Call arch-specific init after relocation, when console is ready"
709 With this option U-Boot will call arch_misc_init() after
710 relocation to allow miscellaneous arch-dependent initialisation
711 to be performed. This function should be defined by the board
712 and will be called after the console is set up, after relocation.
714 config BOARD_EARLY_INIT_F
715 bool "Call board-specific init before relocation"
717 Some boards need to perform initialisation as soon as possible
718 after boot. With this option, U-Boot calls board_early_init_f()
719 after driver model is ready in the pre-relocation init sequence.
720 Note that the normal serial console is not yet set up, but the
721 debug UART will be available if enabled.
723 config BOARD_EARLY_INIT_R
724 bool "Call board-specific init after relocation"
726 Some boards need to perform initialisation as directly after
727 relocation. With this option, U-Boot calls board_early_init_r()
728 in the post-relocation init sequence.
730 config BOARD_POSTCLK_INIT
731 bool "Call board_postclk_init"
733 Some boards need this to initialize select items, after clocks /
734 timebase and before env / serial.
736 config BOARD_LATE_INIT
737 bool "Execute Board late init"
739 Sometimes board require some initialization code that might
740 require once the actual init done, example saving board specific env,
741 boot-modes etc. which eventually done at late.
743 So this config enable the late init code with the help of board_late_init
744 function which should defined on respective boards.
747 bool "Call set_cpu_clk_info"
751 bool "hwconfig infrastructure"
752 default y if PPC || ARCH_LS1021A || FSL_LSCH2 || FSL_LSCH3
756 depends on ARCH_LS1021A || FSL_LSCH2 || FSL_LSCH3 || \
757 (FSL_ESDHC_IMX && (ARCH_MX5 || ARCH_MX6 || ARCH_MX7))
760 Enable to call get_clocks() in board_init_f() for platforms other
761 than PowerPC or M68k. This is a legacy option. If not TARGET_BRPPT2
763 config LAST_STAGE_INIT
764 bool "Call board-specific as last setup step"
767 Some boards need to perform initialisation immediately before control
768 is passed to the command-line interpreter (e.g. for initializations
769 that depend on later phases in the init sequence). With this option,
770 U-Boot calls last_stage_init() before the command-line interpreter is
774 bool "Execute Misc Init"
775 default y if ARCH_KEYSTONE || ARCH_SUNXI || MPC85xx
776 default y if ARCH_OMAP2PLUS && !AM33XX
778 Enabling this option calls 'misc_init_r' function
780 config SYS_MALLOC_BOOTPARAMS
781 bool "Malloc a buffer to use for bootparams"
783 In some cases rather than using a known location to store the
784 bi_boot_params portion of gd we need to allocate it from our malloc pool.
786 config SYS_BOOTPARAMS_LEN
787 hex "Size of the bootparam buffer to malloc in bytes"
788 depends on SYS_MALLOC_BOOTPARAMS
789 default 0x20000 if MIPS || RCAR_64
793 bool "Enable I2C connected system identifier EEPROM"
795 A number of different systems and vendors enable a vendor-specified
796 EEPROM that contains various identifying features.
798 config SYS_EEPROM_BUS_NUM
799 int "I2C bus number of the system identifier EEPROM"
804 prompt "EEPROM starts with 'CCID' or 'NXID'"
805 depends on ID_EEPROM && (PPC || ARCH_LS1021A || FSL_LAYERSCAPE)
806 default SYS_I2C_EEPROM_NXID
808 Specify if the Freescale / NXP ID EEPROM starts with 'CCID' or 'NXID'
809 ASCII literal string.
811 config SYS_I2C_EEPROM_CCID
812 bool "EEPROM starts with 'CCID'"
814 config SYS_I2C_EEPROM_NXID
815 bool "EEPROM starts with 'NXID'"
820 bool "Enumerate PCI buses during init"
823 With this option U-Boot will call pci_init() soon after relocation,
824 which will enumerate PCI buses. This is needed, for instance, in the
825 case of DM PCI-based Ethernet devices, which will not be detected
826 without having the enumeration performed earlier.
829 bool "Reset ethernet PHY during init"
831 Implement reset_phy() in board code if required to reset the ethernet
836 endmenu # Init options
838 menu "Security support"
841 bool # "Support hashing API (SHA1, SHA256, etc.)"
843 This provides a way to hash data in memory using various supported
844 algorithms (such as SHA1, MD5, CRC32). The API is defined in hash.h
845 and the algorithms it supports are defined in common/hash.c. See
846 also CMD_HASH for command-line access.
849 bool "Build Android Verified Boot operations"
852 depends on PARTITION_UUIDS
854 This option enables compilation of bootloader-dependent operations,
855 used by Android Verified Boot 2.0 library (libavb). Includes:
856 * Helpers to process strings in order to build OS bootargs.
857 * Helpers to access MMC, similar to drivers/fastboot/fb_mmc.c.
858 * Helpers to alloc/init/free avb ops.
863 hex "Define AVB buffer address"
864 default FASTBOOT_BUF_ADDR
866 AVB requires a buffer for memory transactions. This variable defines the
870 hex "Define AVB buffer SIZE"
871 default FASTBOOT_BUF_SIZE
873 AVB requires a buffer for memory transactions. This variable defines the
879 bool "Build SCP03 - Secure Channel Protocol O3 - controls"
880 depends on OPTEE || SANDBOX
883 This option allows U-Boot to enable and or provision SCP03 on an OPTEE
884 controlled Secured Element.
887 bool # "Support hashing API (SHA1, SHA256, etc.)"
889 This provides a way to hash data in memory using various supported
890 algorithms (such as SHA1, MD5, CRC32). The API is defined in hash.h
891 and the algorithms it supports are defined in common/hash.c. See
892 also CMD_HASH for command-line access.
895 bool # "Support hashing API (SHA1, SHA256, etc.)"
897 This provides a way to hash data in memory using various supported
898 algorithms (such as SHA1, MD5, CRC32). The API is defined in hash.h
899 and the algorithms it supports are defined in common/hash.c. See
900 also CMD_HASH for command-line access.
902 config STACKPROTECTOR
903 bool "Stack Protector buffer overflow detection"
905 Enable stack smash detection through compiler's stack-protector
908 config SPL_STACKPROTECTOR
909 bool "Stack Protector buffer overflow detection for SPL"
910 depends on STACKPROTECTOR && SPL
912 config TPL_STACKPROTECTOR
913 bool "Stack Protector buffer overflow detection for TPL"
914 depends on STACKPROTECTOR && TPL
916 config BOARD_RNG_SEED
917 bool "Provide /chosen/rng-seed property to the linux kernel"
919 Selecting this option requires the board to define a
920 board_rng_seed() function, which should return a buffer
921 which will be used to populate the /chosen/rng-seed property
922 in the device tree for the OS being booted.
924 It is up to the board code (and more generally the whole
925 BSP) where and how to store (or generate) such a seed, how
926 to ensure a given seed is only used once, how to create a
927 new seed for use on subsequent boots, and whether or not the
928 kernel should account any entropy from the given seed.
932 menu "Update support"
939 bool "Auto-update using fitImage via TFTP"
940 depends on FIT && OF_LIBFDT && !MTD_NOR_FLASH
943 This option allows performing update of NOR with data in fitImage
946 config UPDATE_TFTP_CNT_MAX
947 int "The number of connection retries during auto-update"
949 depends on UPDATE_TFTP || DFU_TFTP
951 config UPDATE_TFTP_MSEC_MAX
952 int "Delay in mSec to wait for the TFTP server during auto-update"
954 depends on UPDATE_TFTP || DFU_TFTP
956 config UPDATE_LOAD_ADDR
957 hex "Address in memory to load the update to"
958 depends on UPDATE_TFTP || DFU_TFTP
961 This option defines the location in memory to be used to load the
962 update to, if 'loadaddr' is not set in the environment.
965 bool "Firmware update using fitImage"
966 depends on FIT && OF_LIBFDT
970 This option allows performing update of DFU-capable storage with
974 bool "Android A/B updates"
976 If enabled, adds support for the new Android A/B update model. This
977 allows the bootloader to select which slot to boot from based on the
978 information provided by userspace via the Android boot_ctrl HAL. This
979 allows a bootloader to try a new version of the system but roll back
980 to previous version if the new one didn't boot all the way.
982 config ANDROID_AB_BACKUP_OFFSET
983 hex "Offset of backup bootloader control"
984 depends on ANDROID_AB
987 If non-zero, a backup bootloader message starting at this offset in
988 the partition will tried in the event that the primary one (starting
989 at offset 0) fails its checksum. The offset is in bytes and must be
990 multiple of the block size.
997 bool "Support for a bloblist"
1000 This enables support for a bloblist in U-Boot, which can be passed
1001 from TPL to SPL to U-Boot proper (and potentially to Linux). The
1002 blob list supports multiple binary blobs of data, each with a tag,
1003 so that different U-Boot components can store data which can survive
1004 through to the next phase of the boot.
1007 bool "Support for a bloblist in SPL"
1008 depends on BLOBLIST && SPL_LIBGENERIC_SUPPORT && SPL_LIBCOMMON_SUPPORT
1012 This enables a bloblist in SPL. If this is the first part of U-Boot
1013 to run, then the bloblist is set up in SPL and passed to U-Boot
1014 proper. If TPL also has a bloblist, then SPL uses the one from there.
1017 bool "Support for a bloblist in TPL"
1018 depends on BLOBLIST && TPL_LIBGENERIC_SUPPORT && TPL_LIBCOMMON_SUPPORT
1022 This enables a bloblist in TPL. The bloblist is set up in TPL and
1023 passed to SPL and U-Boot proper.
1026 bool "Support for a bloblist in VPL"
1027 depends on BLOBLIST && VPL_LIBGENERIC_SUPPORT && VPL_LIBCOMMON_SUPPORT
1030 This enables a bloblist in VPL. The bloblist is set up in VPL and
1031 passed to SPL and U-Boot proper.
1036 prompt "Bloblist location"
1038 Select the location of the bloblist, via various means.
1040 config BLOBLIST_FIXED
1041 bool "Place bloblist at a fixed address in memory"
1043 Select this to used a fixed memory address for the bloblist. If the
1044 bloblist exists at this address from a previous phase, it used as is.
1045 If not it is created at this address in U-Boot.
1047 config BLOBLIST_ALLOC
1048 bool "Allocate bloblist"
1050 Allocate the bloblist using malloc(). This avoids the need to
1051 specify a fixed address on systems where this is unknown or can
1056 config BLOBLIST_ADDR
1057 hex "Address of bloblist"
1058 default 0xb000 if SANDBOX
1059 depends on BLOBLIST_FIXED
1061 Sets the address of the bloblist, set up by the first part of U-Boot
1062 which runs. Subsequent U-Boot phases typically use the same address.
1064 This is not used if BLOBLIST_ALLOC is selected.
1066 config BLOBLIST_SIZE
1067 hex "Size of bloblist"
1070 Sets the size of the bloblist in bytes. This must include all
1071 overhead (alignment, bloblist header, record header). The bloblist
1072 is set up in the first part of U-Boot to run (TPL, SPL or U-Boot
1073 proper), and this sane bloblist is used for subsequent phases.
1075 config BLOBLIST_SIZE_RELOC
1076 hex "Size of bloblist after relocation"
1077 default BLOBLIST_SIZE if BLOBLIST_FIXED || BLOBLIST_ALLOC
1078 default 0x0 if BLOBLIST_PASSAGE
1080 Sets the size of the bloblist in bytes after relocation. Since U-Boot
1081 has a lot more memory available then, it is possible to use a larger
1082 size than the one set up by SPL. This bloblist is set up during the
1090 prompt "Bloblist location in SPL"
1092 Select the location of the bloblist, via various means. Typically
1093 you should use the same value for SPL as for U-Boot, since they need
1094 to look in the same place. But if BLOBLIST_ALLOC is used, then a
1095 fresh bloblist will be created each time, since there is no shared
1096 address (between phases) for the bloblist.
1098 config SPL_BLOBLIST_FIXED
1099 bool "Place bloblist at a fixed address in memory"
1101 Select this to used a fixed memory address for the bloblist. If the
1102 bloblist exists at this address from a previous phase, it used as is.
1103 If not it is created at this address in SPL.
1105 config SPL_BLOBLIST_ALLOC
1106 bool "Allocate bloblist"
1108 Allocate the bloblist using malloc(). This avoids the need to
1109 specify a fixed address on systems where this is unknown or can
1114 endif # SPL_BLOBLIST
1119 prompt "Bloblist location in TPL"
1121 Select the location of the bloblist, via various means. Typically
1122 you should use the same value for TPL as for U-Boot, since they need
1123 to look in the same place. But if BLOBLIST_ALLOC is used, then a
1124 fresh bloblist will be created each time, since there is no shared
1125 address (between phases) for the bloblist.
1127 config TPL_BLOBLIST_FIXED
1128 bool "Place bloblist at a fixed address in memory"
1130 Select this to used a fixed memory address for the bloblist. If the
1131 bloblist exists at this address from a previous phase, it used as is.
1132 If not it is created at this address in TPL.
1134 config TPL_BLOBLIST_ALLOC
1135 bool "Allocate bloblist"
1137 Allocate the bloblist using malloc(). This avoids the need to
1138 specify a fixed address on systems where this is unknown or can
1143 endif # TPL_BLOBLIST
1148 prompt "Bloblist location in VPL"
1150 Select the location of the bloblist, via various means. Typically
1151 you should use the same value for VPL as for U-Boot, since they need
1152 to look in the same place. But if BLOBLIST_ALLOC is used, then a
1153 fresh bloblist will be created each time, since there is no shared
1154 address (between phases) for the bloblist.
1156 config VPL_BLOBLIST_FIXED
1157 bool "Place bloblist at a fixed address in memory"
1159 Select this to used a fixed memory address for the bloblist. If the
1160 bloblist exists at this address from a previous phase, it used as is.
1161 If not it is created at this address in VPL.
1163 config VPL_BLOBLIST_ALLOC
1164 bool "Allocate bloblist"
1166 Allocate the bloblist using malloc(). This avoids the need to
1167 specify a fixed address on systems where this is unknown or can
1172 endif # VPL_BLOBLIST
1176 source "common/spl/Kconfig"
1178 config IMAGE_SIGN_INFO
1183 Enable image_sign_info helper functions.
1187 config SPL_IMAGE_SIGN_INFO
1192 Enable image_sign_info helper functions in SPL.
1194 config VPL_IMAGE_SIGN_INFO
1199 Enable image_sign_info helper functions in SPL.