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Masahiro Yamada51631252014-07-30 14:08:15 +09001#
2# For a description of the syntax of this configuration file,
Robert P. J. Day59d7c342016-04-16 05:53:07 -04003# see the file Documentation/kbuild/kconfig-language.txt in the
4# Linux kernel source tree.
Masahiro Yamada51631252014-07-30 14:08:15 +09005#
6mainmenu "U-Boot $UBOOTVERSION Configuration"
7
8config UBOOTVERSION
9 string
10 option env="UBOOTVERSION"
11
Simon Glass66afaef2015-02-24 22:26:19 +090012# Allow defaults in arch-specific code to override any given here
13source "arch/Kconfig"
14
Masahiro Yamada51631252014-07-30 14:08:15 +090015menu "General setup"
16
Heinrich Schuchardt4c7a2112017-10-19 23:49:19 +020017config BROKEN
18 bool
19 help
20 This option cannot be enabled. It is used as dependency
21 for broken and incomplete features.
22
Masahiro Yamadae91c3c32014-08-22 19:42:27 +090023config LOCALVERSION
24 string "Local version - append to U-Boot release"
Masahiro Yamadae91c3c32014-08-22 19:42:27 +090025 help
26 Append an extra string to the end of your U-Boot version.
Robert P. J. Day59d7c342016-04-16 05:53:07 -040027 This will show up in your boot log, for example.
Masahiro Yamadae91c3c32014-08-22 19:42:27 +090028 The string you set here will be appended after the contents of
29 any files with a filename matching localversion* in your
30 object and source tree, in that order. Your total string can
31 be a maximum of 64 characters.
32
33config LOCALVERSION_AUTO
34 bool "Automatically append version information to the version string"
Masahiro Yamadae91c3c32014-08-22 19:42:27 +090035 default y
36 help
37 This will try to automatically determine if the current tree is a
Robert P. J. Day59d7c342016-04-16 05:53:07 -040038 release tree by looking for Git tags that belong to the current
Masahiro Yamadae91c3c32014-08-22 19:42:27 +090039 top of tree revision.
40
41 A string of the format -gxxxxxxxx will be added to the localversion
Robert P. J. Day59d7c342016-04-16 05:53:07 -040042 if a Git-based tree is found. The string generated by this will be
Masahiro Yamadae91c3c32014-08-22 19:42:27 +090043 appended after any matching localversion* files, and after the value
44 set in CONFIG_LOCALVERSION.
45
46 (The actual string used here is the first eight characters produced
47 by running the command:
48
49 $ git rev-parse --verify HEAD
50
51 which is done within the script "scripts/setlocalversion".)
52
Masahiro Yamada4a8ed8e2014-08-22 19:42:29 +090053config CC_OPTIMIZE_FOR_SIZE
54 bool "Optimize for size"
Masahiro Yamada4a8ed8e2014-08-22 19:42:29 +090055 default y
56 help
57 Enabling this option will pass "-Os" instead of "-O2" to gcc
58 resulting in a smaller U-Boot image.
59
60 This option is enabled by default for U-Boot.
61
Hans de Goede9f823612016-06-20 23:16:28 +020062config DISTRO_DEFAULTS
63 bool "Select defaults suitable for booting general purpose Linux distributions"
Tom Rini3337e3a2016-11-29 09:14:57 -050064 default y if ARCH_SUNXI || TEGRA
Alexander Grafb99ebaf2016-11-17 01:03:02 +010065 default y if ARCH_LS2080A
Andreas Färber70b8bd72017-01-15 20:22:30 +010066 default y if ARCH_MESON
Romain Perier7bdedf12017-01-11 11:46:14 +010067 default y if ARCH_ROCKCHIP
Hans de Goede9f823612016-06-20 23:16:28 +020068 default n
Tom Rinia391d502016-08-12 08:31:17 -040069 select CMD_BOOTZ if ARM && !ARM64
Masahiro Yamada26959272016-08-12 08:31:16 -040070 select CMD_BOOTI if ARM64
Hans de Goede9f823612016-06-20 23:16:28 +020071 select CMD_DHCP
Yann E. MORINbfb380b2016-11-13 21:59:52 +010072 select CMD_PXE
Hans de Goede9f823612016-06-20 23:16:28 +020073 select CMD_EXT2
74 select CMD_EXT4
75 select CMD_FAT
76 select CMD_FS_GENERIC
77 select CMD_MII
78 select CMD_PING
Patrick Delaunayb331cd62017-01-27 11:00:42 +010079 select CMD_PART
Hans de Goede9f823612016-06-20 23:16:28 +020080 select HUSH_PARSER
81 help
82 Select this to enable various options and commands which are suitable
83 for building u-boot for booting general purpose Linux distributions.
84
Simon Glassb724bd72015-02-11 16:32:59 -070085config SYS_MALLOC_F
86 bool "Enable malloc() pool before relocation"
Masahiro Yamada326a6822015-03-19 19:42:55 +090087 default y if DM
Simon Glassb724bd72015-02-11 16:32:59 -070088 help
Robert P. J. Day59d7c342016-04-16 05:53:07 -040089 Before relocation, memory is very limited on many platforms. Still,
Simon Glassb724bd72015-02-11 16:32:59 -070090 we can provide a small malloc() pool if needed. Driver model in
91 particular needs this to operate, so that it can allocate the
92 initial serial device and any others that are needed.
93
94config SYS_MALLOC_F_LEN
95 hex "Size of malloc() pool before relocation"
96 depends on SYS_MALLOC_F
97 default 0x400
98 help
Robert P. J. Day59d7c342016-04-16 05:53:07 -040099 Before relocation, memory is very limited on many platforms. Still,
Simon Glassb724bd72015-02-11 16:32:59 -0700100 we can provide a small malloc() pool if needed. Driver model in
101 particular needs this to operate, so that it can allocate the
102 initial serial device and any others that are needed.
103
Andy Yanf1896c42017-07-24 17:43:34 +0800104config SPL_SYS_MALLOC_F_LEN
Philipp Tomsichae2cee22017-07-28 11:06:03 +0200105 hex "Size of malloc() pool in SPL before relocation"
106 depends on SYS_MALLOC_F
107 default SYS_MALLOC_F_LEN
108 help
109 Before relocation, memory is very limited on many platforms. Still,
110 we can provide a small malloc() pool if needed. Driver model in
111 particular needs this to operate, so that it can allocate the
112 initial serial device and any others that are needed.
113
114config TPL_SYS_MALLOC_F_LEN
115 hex "Size of malloc() pool in TPL before relocation"
Andy Yanf1896c42017-07-24 17:43:34 +0800116 depends on SYS_MALLOC_F
117 default SYS_MALLOC_F_LEN
118 help
119 Before relocation, memory is very limited on many platforms. Still,
120 we can provide a small malloc() pool if needed. Driver model in
121 particular needs this to operate, so that it can allocate the
122 initial serial device and any others that are needed.
123
Tom Rini1bf09792014-11-14 09:34:29 +0100124menuconfig EXPERT
Przemyslaw Marczak0aa8a4a2015-03-04 14:01:24 +0100125 bool "Configure standard U-Boot features (expert users)"
126 default y
127 help
128 This option allows certain base U-Boot options and settings
129 to be disabled or tweaked. This is for specialized
130 environments which can tolerate a "non-standard" U-Boot.
Robert P. J. Day59d7c342016-04-16 05:53:07 -0400131 Use this only if you really know what you are doing.
Tom Rini1bf09792014-11-14 09:34:29 +0100132
Przemyslaw Marczak0aa8a4a2015-03-04 14:01:24 +0100133if EXPERT
134 config SYS_MALLOC_CLEAR_ON_INIT
135 bool "Init with zeros the memory reserved for malloc (slow)"
136 default y
137 help
138 This setting is enabled by default. The reserved malloc
139 memory is initialized with zeros, so first malloc calls
140 will return the pointer to the zeroed memory. But this
141 slows the boot time.
142
143 It is recommended to disable it, when CONFIG_SYS_MALLOC_LEN
144 value, has more than few MiB, e.g. when uses bzip2 or bmp logo.
145 Then the boot time can be significantly reduced.
146 Warning:
147 When disabling this, please check if malloc calls, maybe
Robert P. J. Day59d7c342016-04-16 05:53:07 -0400148 should be replaced by calloc - if one expects zeroed memory.
Simon Glass022885c2016-06-30 10:52:20 -0600149
150config TOOLS_DEBUG
151 bool "Enable debug information for tools"
152 help
153 Enable generation of debug information for tools such as mkimage.
154 This can be used for debugging purposes. With debug information
155 it is possible to set breakpoints on particular lines, single-step
156 debug through the source code, etc.
157
Robert P. J. Day266aa862017-01-02 16:32:13 -0500158endif # EXPERT
Masahiro Yamadabb6b1422016-07-25 19:56:03 +0900159
160config PHYS_64BIT
161 bool "64bit physical address support"
162 help
163 Say Y here to support 64bit physical memory address.
164 This can be used not only for 64bit SoCs, but also for
165 large physical address extention on 32bit SoCs.
166
Heinrich Schuchardt871aa412017-10-16 18:08:38 +0000167config BUILD_ROM
168 bool "Build U-Boot as BIOS replacement"
169 depends on X86
170 help
171 This option allows to build a ROM version of U-Boot.
172 The build process generally requires several binary blobs
173 which are not shipped in the U-Boot source tree.
174 Please, see doc/README.x86 for details.
175
Masahiro Yamada40ad4c42014-11-26 18:42:31 +0900176endmenu # General setup
177
Masahiro Yamadae91c3c32014-08-22 19:42:27 +0900178menu "Boot images"
179
Tom Rini48f62322017-08-25 17:50:27 -0400180config ANDROID_BOOT_IMAGE
181 bool "Enable support for Android Boot Images"
182 default y if FASTBOOT
183 help
184 This enables support for booting images which use the Android
185 image format header.
186
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900187config FIT
188 bool "Support Flattened Image Tree"
Andre Przywaraaeb9c532017-03-15 01:19:06 +0000189 select MD5
Tom Rini089df182017-05-15 12:17:49 -0400190 select SHA1
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900191 help
Robert P. J. Day266aa862017-01-02 16:32:13 -0500192 This option allows you to boot the new uImage structure,
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900193 Flattened Image Tree. FIT is formally a FDT, which can include
194 images of various types (kernel, FDT blob, ramdisk, etc.)
195 in a single blob. To boot this new uImage structure,
Igor Grinberg1f9ac4a2015-08-26 17:54:45 +0300196 pass the address of the blob to the "bootm" command.
Simon Glass73223f02016-02-22 22:55:43 -0700197 FIT is very flexible, supporting compression, multiple images,
198 multiple configurations, verification through hashing and also
Robert P. J. Day266aa862017-01-02 16:32:13 -0500199 verified boot (secure boot using RSA).
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900200
Robert P. J. Day266aa862017-01-02 16:32:13 -0500201if FIT
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900202
Tom Rini0db7f682017-05-15 12:17:48 -0400203config FIT_ENABLE_SHA256_SUPPORT
204 bool "Support SHA256 checksum of FIT image contents"
Tom Rini089df182017-05-15 12:17:49 -0400205 select SHA256
Tom Rini0db7f682017-05-15 12:17:48 -0400206 default y
207 help
208 Enable this to support SHA256 checksum of FIT image contents. A
209 SHA256 checksum is a 256-bit (32-byte) hash value used to check that
210 the image contents have not been corrupted. SHA256 is recommended
211 for use in secure applications since (as at 2016) there is no known
212 feasible attack that could produce a 'collision' with differing
213 input data. Use this for the highest security. Note that only the
214 SHA256 variant is supported: SHA512 and others are not currently
215 supported in U-Boot.
216
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900217config FIT_SIGNATURE
Ruchika Guptac4beb222015-01-23 16:01:51 +0530218 bool "Enable signature verification of FIT uImages"
Chris Kuethe90097982015-02-04 19:16:14 -0800219 depends on DM
Ruchika Guptac4beb222015-01-23 16:01:51 +0530220 select RSA
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900221 help
222 This option enables signature verification of FIT uImages,
gaurav rana94e3c8c2015-02-20 12:51:46 +0530223 using a hash signed and verified using RSA. If
224 CONFIG_SHA_PROG_HW_ACCEL is defined, i.e support for progressive
Robert P. J. Day266aa862017-01-02 16:32:13 -0500225 hashing is available using hardware, then the RSA library will use
Simon Glass73223f02016-02-22 22:55:43 -0700226 it. See doc/uImage.FIT/signature.txt for more details.
227
228 WARNING: When relying on signed FIT images with a required signature
229 check the legacy image format is disabled by default, so that
230 unsigned images cannot be loaded. If a board needs the legacy image
231 format support in this case, enable it using
232 CONFIG_IMAGE_FORMAT_LEGACY.
233
Robert P. J. Day266aa862017-01-02 16:32:13 -0500234config FIT_VERBOSE
235 bool "Show verbose messages when FIT images fail"
236 help
237 Generally a system will have valid FIT images so debug messages
238 are a waste of code space. If you are debugging your images then
239 you can enable this option to get more verbose information about
240 failures.
Teddy Reed51c14cd2016-06-09 19:18:44 -0700241
Simon Glass73223f02016-02-22 22:55:43 -0700242config FIT_BEST_MATCH
243 bool "Select the best match for the kernel device tree"
Simon Glass73223f02016-02-22 22:55:43 -0700244 help
245 When no configuration is explicitly selected, default to the
246 one whose fdt's compatibility field best matches that of
247 U-Boot itself. A match is considered "best" if it matches the
248 most specific compatibility entry of U-Boot's fdt's root node.
249 The order of entries in the configuration's fdt is ignored.
250
Robert P. J. Day266aa862017-01-02 16:32:13 -0500251config FIT_IMAGE_POST_PROCESS
252 bool "Enable post-processing of FIT artifacts after loading by U-Boot"
253 depends on TI_SECURE_DEVICE
Simon Glass73223f02016-02-22 22:55:43 -0700254 help
Robert P. J. Day266aa862017-01-02 16:32:13 -0500255 Allows doing any sort of manipulation to blobs after they got extracted
256 from FIT images like stripping off headers or modifying the size of the
257 blob, verification, authentication, decryption etc. in a platform or
258 board specific way. In order to use this feature a platform or board-
259 specific implementation of board_fit_image_post_process() must be
260 provided. Also, anything done during this post-processing step would
261 need to be comprehended in how the images were prepared before being
262 injected into the FIT creation (i.e. the blobs would have been pre-
263 processed before being added to the FIT image).
264
Tom Rini71139112017-05-22 14:15:16 -0400265if SPL
266
Robert P. J. Day266aa862017-01-02 16:32:13 -0500267config SPL_FIT
268 bool "Support Flattened Image Tree within SPL"
269 depends on SPL
Andre Przywara85c07a52017-04-26 01:32:38 +0100270 select SPL_OF_LIBFDT
Robert P. J. Day266aa862017-01-02 16:32:13 -0500271
272config SPL_FIT_SIGNATURE
273 bool "Enable signature verification of FIT firmware within SPL"
Robert P. J. Day266aa862017-01-02 16:32:13 -0500274 depends on SPL_DM
Andre Przywara85c07a52017-04-26 01:32:38 +0100275 select SPL_FIT
Robert P. J. Day266aa862017-01-02 16:32:13 -0500276 select SPL_RSA
277
278config SPL_LOAD_FIT
279 bool "Enable SPL loading U-Boot as a FIT"
Andre Przywara85c07a52017-04-26 01:32:38 +0100280 select SPL_FIT
Robert P. J. Day266aa862017-01-02 16:32:13 -0500281 help
282 Normally with the SPL framework a legacy image is generated as part
283 of the build. This contains U-Boot along with information as to
284 where it should be loaded. This option instead enables generation
285 of a FIT (Flat Image Tree) which provides more flexibility. In
286 particular it can handle selecting from multiple device tree
287 and passing the correct one to U-Boot.
288
289config SPL_FIT_IMAGE_POST_PROCESS
290 bool "Enable post-processing of FIT artifacts after loading by the SPL"
ext-vasily.gurevich@vaisala.comc12d8b72017-10-02 13:42:55 +0000291 depends on SPL_LOAD_FIT
Robert P. J. Day266aa862017-01-02 16:32:13 -0500292 help
293 Allows doing any sort of manipulation to blobs after they got extracted
294 from the U-Boot FIT image like stripping off headers or modifying the
295 size of the blob, verification, authentication, decryption etc. in a
296 platform or board specific way. In order to use this feature a platform
297 or board-specific implementation of board_fit_image_post_process() must
298 be provided. Also, anything done during this post-processing step would
299 need to be comprehended in how the images were prepared before being
300 injected into the FIT creation (i.e. the blobs would have been pre-
301 processed before being added to the FIT image).
302
Andre Przywara1a12fdc2017-04-26 01:32:45 +0100303config SPL_FIT_SOURCE
304 string ".its source file for U-Boot FIT image"
305 depends on SPL_FIT
306 help
307 Specifies a (platform specific) FIT source file to generate the
308 U-Boot FIT image. This could specify further image to load and/or
309 execute.
310
311config SPL_FIT_GENERATOR
312 string ".its file generator script for U-Boot FIT image"
313 depends on SPL_FIT
Andre Przywarad29adf82017-04-26 01:32:48 +0100314 default "board/sunxi/mksunxi_fit_atf.sh" if SPL_LOAD_FIT && ARCH_SUNXI
Andre Przywara1a12fdc2017-04-26 01:32:45 +0100315 help
316 Specifies a (platform specific) script file to generate the FIT
317 source file used to build the U-Boot FIT image file. This gets
318 passed a list of supported device tree file stub names to
319 include in the generated image.
320
Tom Rini71139112017-05-22 14:15:16 -0400321endif # SPL
322
Robert P. J. Day266aa862017-01-02 16:32:13 -0500323endif # FIT
Simon Glass73223f02016-02-22 22:55:43 -0700324
325config OF_BOARD_SETUP
326 bool "Set up board-specific details in device tree before boot"
327 depends on OF_LIBFDT
328 help
329 This causes U-Boot to call ft_board_setup() before booting into
330 the Operating System. This function can set up various
331 board-specific information in the device tree for use by the OS.
332 The device tree is then passed to the OS.
333
334config OF_SYSTEM_SETUP
335 bool "Set up system-specific details in device tree before boot"
336 depends on OF_LIBFDT
337 help
338 This causes U-Boot to call ft_system_setup() before booting into
339 the Operating System. This function can set up various
340 system-specific information in the device tree for use by the OS.
341 The device tree is then passed to the OS.
342
343config OF_STDOUT_VIA_ALIAS
344 bool "Update the device-tree stdout alias from U-Boot"
345 depends on OF_LIBFDT
346 help
347 This uses U-Boot's serial alias from the aliases node to update
348 the device tree passed to the OS. The "linux,stdout-path" property
349 in the chosen node is set to point to the correct serial node.
350 This option currently references CONFIG_CONS_INDEX, which is
351 incorrect when used with device tree as this option does not
352 exist / should not be used.
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900353
Masahiro Yamada51631252014-07-30 14:08:15 +0900354config SYS_EXTRA_OPTIONS
355 string "Extra Options (DEPRECATED)"
Masahiro Yamada51631252014-07-30 14:08:15 +0900356 help
357 The old configuration infrastructure (= mkconfig + boards.cfg)
Masahiro Yamadaed363232014-09-16 16:32:58 +0900358 provided the extra options field. If you have something like
Masahiro Yamada51631252014-07-30 14:08:15 +0900359 "HAS_BAR,BAZ=64", the optional options
360 #define CONFIG_HAS
361 #define CONFIG_BAZ 64
362 will be defined in include/config.h.
363 This option was prepared for the smooth migration from the old
364 configuration to Kconfig. Since this option will be removed sometime,
365 new boards should not use this option.
366
Masahiro Yamada7f7563c2014-10-30 15:30:58 +0900367config SYS_TEXT_BASE
Tom Rini936478e2017-03-14 11:08:11 -0400368 depends on ARC || X86 || ARCH_UNIPHIER || ARCH_ZYNQMP || \
Michal Simek6ebf8a42016-12-16 11:57:17 +0100369 (M68K && !TARGET_ASTRO_MCF5373L) || MICROBLAZE || MIPS || \
Adam Ford7e0ed132017-07-28 08:32:52 -0500370 ARCH_ZYNQ || ARCH_KEYSTONE || ARCH_OMAP2PLUS
Ben Stoltz484cce02015-08-04 12:33:41 -0600371 depends on !EFI_APP
Masahiro Yamada7f7563c2014-10-30 15:30:58 +0900372 hex "Text Base"
373 help
374 TODO: Move CONFIG_SYS_TEXT_BASE for all the architecture
375
Adam Ford7e0ed132017-07-28 08:32:52 -0500376 default 0x80800000 if ARCH_OMAP2PLUS
377
Andreas Dannenbergeba3fbd2016-07-27 12:12:39 -0500378
Alexey Brodkin33d88182015-01-13 18:49:01 +0300379config SYS_CLK_FREQ
Iain Patone71b4222015-03-28 10:26:38 +0000380 depends on ARC || ARCH_SUNXI
Alexey Brodkin33d88182015-01-13 18:49:01 +0300381 int "CPU clock frequency"
382 help
383 TODO: Move CONFIG_SYS_CLK_FREQ for all the architecture
384
Masahiro Yamada63c09412016-11-26 11:02:10 +0900385config ARCH_FIXUP_FDT_MEMORY
386 bool "Enable arch_fixup_memory_banks() call"
Michal Simeke2f88df2016-07-28 09:06:41 +0200387 default y
388 help
389 Enable FDT memory map syncup before OS boot. This feature can be
390 used for booting OS with different memory setup where the part of
391 the memory location should be used for different purpose.
392
Masahiro Yamadae91c3c32014-08-22 19:42:27 +0900393endmenu # Boot images
Masahiro Yamada51631252014-07-30 14:08:15 +0900394
Emmanuel Vadot4db98d32017-01-31 12:17:04 +0100395source "api/Kconfig"
396
Masahiro Yamadaed363232014-09-16 16:32:58 +0900397source "common/Kconfig"
398
Simon Glass72a8cf82016-01-17 20:53:51 -0700399source "cmd/Kconfig"
400
Patrick Delaunaye274ef62017-01-27 11:00:35 +0100401source "disk/Kconfig"
402
Masahiro Yamada783e6a72014-09-22 19:59:05 +0900403source "dts/Kconfig"
404
Simon Glass0649cd02017-08-03 12:21:49 -0600405source "env/Kconfig"
406
Masahiro Yamadaed363232014-09-16 16:32:58 +0900407source "net/Kconfig"
408
409source "drivers/Kconfig"
410
411source "fs/Kconfig"
412
413source "lib/Kconfig"
Simon Glass19679822015-02-05 21:41:37 -0700414
415source "test/Kconfig"