boot/uboot/Config.in

2 	bool "U-Boot"
4 	  Build "Das U-Boot" Boot Monitor
6 	  https://www.denx.de/wiki/U-Boot
17 	  Select this option if you use a recent U-Boot version (2015.04
23 	  Select this option if you use an old U-Boot (older than
30 	string "U-Boot board name"
32 	  One of U-Boot supported boards to be built.
33 	  This will be suffixed with _config to meet U-Boot standard
34 	  naming. See boards.cfg in U-Boot source code for the list of
39 	prompt "U-Boot Version"
41 	  Select the specific U-Boot version you want to use
66 	string "U-Boot version"
70 	string "URL of custom U-Boot tarball"
96 	string "Custom U-Boot patches"
99 	  A space-separated list of patches to apply to U-Boot.
108 	prompt "U-Boot configuration"
112 	bool "Using an in-tree board defconfig file"
123 	  Name of the board for which U-Boot should be built, without
130 	  Path to the U-Boot configuration file.
135 	  A space-separated list of configuration fragment files,
136 	  that will be merged to the main U-Boot configuration file.
140 	bool "U-Boot needs dtc"
143 	  Select this option if your U-Boot board configuration
150 	bool "U-Boot needs host Python"
156 	  Select this option if U-Boot does not need any
162 	  Select this option if U-Boot needs a host Python 2.x
163 	  interpreter. This is the case for some U-Boot
164 	  configurations, prior to U-Boot 2020.01.
169 	  Select this option if U-Boot needs a host Python 3.x
170 	  interpreter. This is the case for some U-Boot
171 	  configurations, after U-Boot 2020.01.
176 	bool "U-Boot needs pylibfdt"
179 	  Select this option if your U-Boot board configuration
183 	bool "U-Boot needs pyelftools"
186 	  Select this option if your U-Boot board configuration
188 	  This is used by some rockchip SOCs for elf parsing.
192 	bool "U-Boot needs OpenSSL"
194 	  Select this option if your U-Boot board configuration
195 	  requires OpenSSL to be available on the host. This is
200 	bool "U-Boot needs lzop"
202 	  Select this option if your U-Boot board configuration
203 	  requires lzop to be available on the host. This is typically
208 	bool "U-Boot needs ATF BL31"
214 	  encapsulate the BL31 part of ATF inside U-Boot. This option
215 	  makes sure ATF gets built prior to U-Boot, and that the BL31
216 	  variable pointing to ATF's BL31 binary, is passed during the
220 	prompt "U-Boot ATF BL31 format"
233 	bool "U-Boot needs OpenSBI"
236 	  Some RISC-V platforms (such as SiFive HiFive Unleashed)
237 	  encapsulate the OpenSBI firmware image inside U-Boot.
238 	  This option makes sure OpenSBI gets built prior to U-Boot,
240 	  is passed during the Buildroot build.
243 	bool "U-Boot needs firmware-imx"
250 	  U-Boot.
252 	  the U-Boot source directory.
254 menu "U-Boot binary format"
257 	bool "u-boot.ais"
259 	  AIS (Application Image Script) is a format defined by TI.
260 	  It is required to load code/data on OMAP-L1 processors.
261 	  u-boot.ais contains U-Boot with the SPL support.
264 	bool "u-boot.bin"
268 	bool "u-boot.dtb"
271 	bool "u-boot-dtb.bin"
274 	bool "u-boot-nand.bin"
277 	bool "u-boot.elf"
280 	bool "u-boot.img"
283 	bool "u-boot-dtb.img"
286 	bool "u-boot.imx"
289 	bool "u-boot-dtb.imx"
292 	bool "u-boot.itb"
295 	bool "u-boot.kwb (Marvell)"
299 	bool "u-boot.nand (Freescale i.MX28)"
302 	  This is Freescale i.MX28 BootStream format (.sb), with a
303 	  header for booting from a NAND flash.
305 	  U-Boot includes an mxsboot tool to generate this format,
309 	  to NAND flash:
310 	  1) The NAND was not written at all yet or the BCB (Boot
311 	  Control Blocks) is broken. In this case, the NAND image
312 	  'u-boot.nand' needs to written.
313 	  2) The NAND flash was already written with a good BCB. This
314 	  applies after 'u-boot.nand' was correctly written. There is no
316 	  be upgraded by writing 'u-boot.sb'.
318 	  To satisfy both cases, the 'u-boot.nand' image obtained from
319 	  mxsboot as well as the U-Boot make target 'u-boot.sb' are
327 	int "NAND page size"
330 	  The NAND page size of the targets NAND flash in bytes as a
333 	  The value provided here is passed to the -w option of mxsboot.
336 	int "NAND OOB size"
339 	  The NAND OOB size of the targets NAND flash in bytes as a
342 	  The value provided here is passed to the -o option of mxsboot.
345 	int "NAND erase size"
348 	  The NAND eraseblock size of the targets NAND flash in bytes as
351 	  The value provided here is passed to the -e option of mxsboot.
356 	bool "u-boot.sb (Freescale i.MX28)"
360 	bool "u-boot.sd (Freescale i.MX28)"
363 	  This is Freescale i.MX28 SB format, with a header for booting
366 	  U-Boot includes an mxsboot tool to generate this format,
372 	bool "u-boot.stm32"
378 	  On some platforms, the standard U-Boot binary is not called
379 	  u-boot.bin, but u-boot<something>.bin. If this is your case,
384 	string "U-Boot binary format: custom names"
387 	  In case the U-Boot binary for the target platform is not among
392 	  u-boot_magic.bin
402 	  Use gpsign to produce an image of u-boot.bin signed with
404 	  This allows U-Boot to boot without the need for an
405 	  intermediate bootloader (e.g. x-loader) if it is written
406 	  on the first sector of the boot medium.
407 	  This only works for some media, such as NAND. Check your
411 	  https://github.com/nmenon/omap-u-boot-utils/blob/master/README
422 	  The omap-u-boot-utils software contains example
424 	  https://github.com/nmenon/omap-u-boot-utils/tree/master/configs
429 	bool "Install U-Boot SPL binary image"
432 	  Install the U-Boot SPL binary image to the images
434 	  SPL is a first stage bootloader loaded into internal
436 	  external memory (DDR), and load the u-boot program
440 	string "U-Boot SPL/TPL binary image name(s)"
441 	default "spl/u-boot-spl.bin"
444 	  A space-separated list of SPL/TPL binaries, generated during
445 	  u-boot build. For most platform SPL name is spl/u-boot-spl.bin
446 	  and TPL name is tpl/u-boot-tpl.bin but not always. SPL name is
455 	  Generate the BOOT.BIN file from U-Boot's SPL. The image
457 	  A bitstream can be loaded by the U-Boot. The SPL searchs
458 	  for u-boot-dtb.img file so this U-Boot format is required
462 	bool "Boot on the Xilinx ZynqMP SoCs"
475 	  If not empty, instructs the U-Boot build process to generate
476 	  a boot.bin (to be loaded by the ZynqMP boot ROM) containing
477 	  both the U-Boot SPL and the PMU firmware in the
478 	  Xilinx-specific boot format.
481 	  used directly from where it is located, or an URI
485 	  If empty, the generated boot.bin will not contain a PMU
488 	  This feature requires U-Boot >= 2018.07.
497 	  file into a loadable blob and pass it to U-Boot. The blob gets
498 	  embedded into the U-Boot SPL and is used to configure the PMU
501 	  Unlike the PMU firmware, the PMU configuration file is unique
507 	  Leave this option empty if your PMU firmware has a hard-coded
510 	  This feature requires U-Boot >= v2019.10.
516 	  On ZynqMP the booloader is responsible for some basic
522 	  Although U-Boot contains psu_init_gpl.c files for some
530 	  needed, should be in the same directory. U-Boot will build
531 	  and link the user-provided file instead of the built-in one.
533 	  Leave empty to use the files provided by U-Boot.
537 	  U-Boot, available from versions after 2018.07.
546 	  Pass the U-Boot image through the mkpimage tool to enable
550 	  through mkpimage. On some other platforms there is no SPL
551 	  because the internal SRAM is big enough to store the full
552 	  U-Boot. In this case, it's directly the full U-Boot image
553 	  that is passed through mkpimage.
555 	  If BR2_TARGET_UBOOT_SPL is enabled then
556 	  BR2_TARGET_UBOOT_SPL_NAME is converted by mkpimage using
559 	  Otherwise the full u-boot-dtb.bin is converted using
570 	  Space-separated list of paths to device tree source files
574 	  To use this device tree source file, the U-Boot configuration