blob: 14740b49f1ddbd00530292b13f7d0ad027039949 [file] [log] [blame]
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
Masahiro Yamadae91c3c32014-08-22 19:42:27 +090017config LOCALVERSION
18 string "Local version - append to U-Boot release"
Masahiro Yamadae91c3c32014-08-22 19:42:27 +090019 help
20 Append an extra string to the end of your U-Boot version.
Robert P. J. Day59d7c342016-04-16 05:53:07 -040021 This will show up in your boot log, for example.
Masahiro Yamadae91c3c32014-08-22 19:42:27 +090022 The string you set here will be appended after the contents of
23 any files with a filename matching localversion* in your
24 object and source tree, in that order. Your total string can
25 be a maximum of 64 characters.
26
27config LOCALVERSION_AUTO
28 bool "Automatically append version information to the version string"
Masahiro Yamadae91c3c32014-08-22 19:42:27 +090029 default y
30 help
31 This will try to automatically determine if the current tree is a
Robert P. J. Day59d7c342016-04-16 05:53:07 -040032 release tree by looking for Git tags that belong to the current
Masahiro Yamadae91c3c32014-08-22 19:42:27 +090033 top of tree revision.
34
35 A string of the format -gxxxxxxxx will be added to the localversion
Robert P. J. Day59d7c342016-04-16 05:53:07 -040036 if a Git-based tree is found. The string generated by this will be
Masahiro Yamadae91c3c32014-08-22 19:42:27 +090037 appended after any matching localversion* files, and after the value
38 set in CONFIG_LOCALVERSION.
39
40 (The actual string used here is the first eight characters produced
41 by running the command:
42
43 $ git rev-parse --verify HEAD
44
45 which is done within the script "scripts/setlocalversion".)
46
Masahiro Yamada4a8ed8e2014-08-22 19:42:29 +090047config CC_OPTIMIZE_FOR_SIZE
48 bool "Optimize for size"
Masahiro Yamada4a8ed8e2014-08-22 19:42:29 +090049 default y
50 help
51 Enabling this option will pass "-Os" instead of "-O2" to gcc
52 resulting in a smaller U-Boot image.
53
54 This option is enabled by default for U-Boot.
55
Hans de Goede9f823612016-06-20 23:16:28 +020056config DISTRO_DEFAULTS
57 bool "Select defaults suitable for booting general purpose Linux distributions"
Tom Rini3337e3a2016-11-29 09:14:57 -050058 default y if ARCH_SUNXI || TEGRA
Alexander Grafb99ebaf2016-11-17 01:03:02 +010059 default y if ARCH_LS2080A
Andreas Färber70b8bd72017-01-15 20:22:30 +010060 default y if ARCH_MESON
Romain Perier7bdedf12017-01-11 11:46:14 +010061 default y if ARCH_ROCKCHIP
Hans de Goede9f823612016-06-20 23:16:28 +020062 default n
Tom Rinia391d502016-08-12 08:31:17 -040063 select CMD_BOOTZ if ARM && !ARM64
Masahiro Yamada26959272016-08-12 08:31:16 -040064 select CMD_BOOTI if ARM64
Hans de Goede9f823612016-06-20 23:16:28 +020065 select CMD_DHCP
Yann E. MORINbfb380b2016-11-13 21:59:52 +010066 select CMD_PXE
Hans de Goede9f823612016-06-20 23:16:28 +020067 select CMD_EXT2
68 select CMD_EXT4
69 select CMD_FAT
70 select CMD_FS_GENERIC
71 select CMD_MII
72 select CMD_PING
Patrick Delaunayb331cd62017-01-27 11:00:42 +010073 select CMD_PART
Hans de Goede9f823612016-06-20 23:16:28 +020074 select HUSH_PARSER
75 help
76 Select this to enable various options and commands which are suitable
77 for building u-boot for booting general purpose Linux distributions.
78
Simon Glassb724bd72015-02-11 16:32:59 -070079config SYS_MALLOC_F
80 bool "Enable malloc() pool before relocation"
Masahiro Yamada326a6822015-03-19 19:42:55 +090081 default y if DM
Simon Glassb724bd72015-02-11 16:32:59 -070082 help
Robert P. J. Day59d7c342016-04-16 05:53:07 -040083 Before relocation, memory is very limited on many platforms. Still,
Simon Glassb724bd72015-02-11 16:32:59 -070084 we can provide a small malloc() pool if needed. Driver model in
85 particular needs this to operate, so that it can allocate the
86 initial serial device and any others that are needed.
87
88config SYS_MALLOC_F_LEN
89 hex "Size of malloc() pool before relocation"
90 depends on SYS_MALLOC_F
91 default 0x400
92 help
Robert P. J. Day59d7c342016-04-16 05:53:07 -040093 Before relocation, memory is very limited on many platforms. Still,
Simon Glassb724bd72015-02-11 16:32:59 -070094 we can provide a small malloc() pool if needed. Driver model in
95 particular needs this to operate, so that it can allocate the
96 initial serial device and any others that are needed.
97
Andy Yanf1896c42017-07-24 17:43:34 +080098config SPL_SYS_MALLOC_F_LEN
Philipp Tomsichae2cee22017-07-28 11:06:03 +020099 hex "Size of malloc() pool in SPL before relocation"
100 depends on SYS_MALLOC_F
101 default SYS_MALLOC_F_LEN
102 help
103 Before relocation, memory is very limited on many platforms. Still,
104 we can provide a small malloc() pool if needed. Driver model in
105 particular needs this to operate, so that it can allocate the
106 initial serial device and any others that are needed.
107
108config TPL_SYS_MALLOC_F_LEN
109 hex "Size of malloc() pool in TPL before relocation"
Andy Yanf1896c42017-07-24 17:43:34 +0800110 depends on SYS_MALLOC_F
111 default SYS_MALLOC_F_LEN
112 help
113 Before relocation, memory is very limited on many platforms. Still,
114 we can provide a small malloc() pool if needed. Driver model in
115 particular needs this to operate, so that it can allocate the
116 initial serial device and any others that are needed.
117
Tom Rini1bf09792014-11-14 09:34:29 +0100118menuconfig EXPERT
Przemyslaw Marczak0aa8a4a2015-03-04 14:01:24 +0100119 bool "Configure standard U-Boot features (expert users)"
120 default y
121 help
122 This option allows certain base U-Boot options and settings
123 to be disabled or tweaked. This is for specialized
124 environments which can tolerate a "non-standard" U-Boot.
Robert P. J. Day59d7c342016-04-16 05:53:07 -0400125 Use this only if you really know what you are doing.
Tom Rini1bf09792014-11-14 09:34:29 +0100126
Przemyslaw Marczak0aa8a4a2015-03-04 14:01:24 +0100127if EXPERT
128 config SYS_MALLOC_CLEAR_ON_INIT
129 bool "Init with zeros the memory reserved for malloc (slow)"
130 default y
131 help
132 This setting is enabled by default. The reserved malloc
133 memory is initialized with zeros, so first malloc calls
134 will return the pointer to the zeroed memory. But this
135 slows the boot time.
136
137 It is recommended to disable it, when CONFIG_SYS_MALLOC_LEN
138 value, has more than few MiB, e.g. when uses bzip2 or bmp logo.
139 Then the boot time can be significantly reduced.
140 Warning:
141 When disabling this, please check if malloc calls, maybe
Robert P. J. Day59d7c342016-04-16 05:53:07 -0400142 should be replaced by calloc - if one expects zeroed memory.
Simon Glass022885c2016-06-30 10:52:20 -0600143
144config TOOLS_DEBUG
145 bool "Enable debug information for tools"
146 help
147 Enable generation of debug information for tools such as mkimage.
148 This can be used for debugging purposes. With debug information
149 it is possible to set breakpoints on particular lines, single-step
150 debug through the source code, etc.
151
Robert P. J. Day266aa862017-01-02 16:32:13 -0500152endif # EXPERT
Masahiro Yamadabb6b1422016-07-25 19:56:03 +0900153
154config PHYS_64BIT
155 bool "64bit physical address support"
156 help
157 Say Y here to support 64bit physical memory address.
158 This can be used not only for 64bit SoCs, but also for
159 large physical address extention on 32bit SoCs.
160
Masahiro Yamada40ad4c42014-11-26 18:42:31 +0900161endmenu # General setup
162
Masahiro Yamadae91c3c32014-08-22 19:42:27 +0900163menu "Boot images"
164
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900165config FIT
166 bool "Support Flattened Image Tree"
Andre Przywaraaeb9c532017-03-15 01:19:06 +0000167 select MD5
Tom Rini089df182017-05-15 12:17:49 -0400168 select SHA1
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900169 help
Robert P. J. Day266aa862017-01-02 16:32:13 -0500170 This option allows you to boot the new uImage structure,
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900171 Flattened Image Tree. FIT is formally a FDT, which can include
172 images of various types (kernel, FDT blob, ramdisk, etc.)
173 in a single blob. To boot this new uImage structure,
Igor Grinberg1f9ac4a2015-08-26 17:54:45 +0300174 pass the address of the blob to the "bootm" command.
Simon Glass73223f02016-02-22 22:55:43 -0700175 FIT is very flexible, supporting compression, multiple images,
176 multiple configurations, verification through hashing and also
Robert P. J. Day266aa862017-01-02 16:32:13 -0500177 verified boot (secure boot using RSA).
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900178
Robert P. J. Day266aa862017-01-02 16:32:13 -0500179if FIT
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900180
Tom Rini0db7f682017-05-15 12:17:48 -0400181config FIT_ENABLE_SHA256_SUPPORT
182 bool "Support SHA256 checksum of FIT image contents"
Tom Rini089df182017-05-15 12:17:49 -0400183 select SHA256
Tom Rini0db7f682017-05-15 12:17:48 -0400184 default y
185 help
186 Enable this to support SHA256 checksum of FIT image contents. A
187 SHA256 checksum is a 256-bit (32-byte) hash value used to check that
188 the image contents have not been corrupted. SHA256 is recommended
189 for use in secure applications since (as at 2016) there is no known
190 feasible attack that could produce a 'collision' with differing
191 input data. Use this for the highest security. Note that only the
192 SHA256 variant is supported: SHA512 and others are not currently
193 supported in U-Boot.
194
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900195config FIT_SIGNATURE
Ruchika Guptac4beb222015-01-23 16:01:51 +0530196 bool "Enable signature verification of FIT uImages"
Chris Kuethe90097982015-02-04 19:16:14 -0800197 depends on DM
Ruchika Guptac4beb222015-01-23 16:01:51 +0530198 select RSA
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900199 help
200 This option enables signature verification of FIT uImages,
gaurav rana94e3c8c2015-02-20 12:51:46 +0530201 using a hash signed and verified using RSA. If
202 CONFIG_SHA_PROG_HW_ACCEL is defined, i.e support for progressive
Robert P. J. Day266aa862017-01-02 16:32:13 -0500203 hashing is available using hardware, then the RSA library will use
Simon Glass73223f02016-02-22 22:55:43 -0700204 it. See doc/uImage.FIT/signature.txt for more details.
205
206 WARNING: When relying on signed FIT images with a required signature
207 check the legacy image format is disabled by default, so that
208 unsigned images cannot be loaded. If a board needs the legacy image
209 format support in this case, enable it using
210 CONFIG_IMAGE_FORMAT_LEGACY.
211
Robert P. J. Day266aa862017-01-02 16:32:13 -0500212config FIT_VERBOSE
213 bool "Show verbose messages when FIT images fail"
214 help
215 Generally a system will have valid FIT images so debug messages
216 are a waste of code space. If you are debugging your images then
217 you can enable this option to get more verbose information about
218 failures.
Teddy Reed51c14cd2016-06-09 19:18:44 -0700219
Simon Glass73223f02016-02-22 22:55:43 -0700220config FIT_BEST_MATCH
221 bool "Select the best match for the kernel device tree"
Simon Glass73223f02016-02-22 22:55:43 -0700222 help
223 When no configuration is explicitly selected, default to the
224 one whose fdt's compatibility field best matches that of
225 U-Boot itself. A match is considered "best" if it matches the
226 most specific compatibility entry of U-Boot's fdt's root node.
227 The order of entries in the configuration's fdt is ignored.
228
Robert P. J. Day266aa862017-01-02 16:32:13 -0500229config FIT_IMAGE_POST_PROCESS
230 bool "Enable post-processing of FIT artifacts after loading by U-Boot"
231 depends on TI_SECURE_DEVICE
Simon Glass73223f02016-02-22 22:55:43 -0700232 help
Robert P. J. Day266aa862017-01-02 16:32:13 -0500233 Allows doing any sort of manipulation to blobs after they got extracted
234 from FIT images like stripping off headers or modifying the size of the
235 blob, verification, authentication, decryption etc. in a platform or
236 board specific way. In order to use this feature a platform or board-
237 specific implementation of board_fit_image_post_process() must be
238 provided. Also, anything done during this post-processing step would
239 need to be comprehended in how the images were prepared before being
240 injected into the FIT creation (i.e. the blobs would have been pre-
241 processed before being added to the FIT image).
242
Tom Rini71139112017-05-22 14:15:16 -0400243if SPL
244
Robert P. J. Day266aa862017-01-02 16:32:13 -0500245config SPL_FIT
246 bool "Support Flattened Image Tree within SPL"
247 depends on SPL
Andre Przywara85c07a52017-04-26 01:32:38 +0100248 select SPL_OF_LIBFDT
Robert P. J. Day266aa862017-01-02 16:32:13 -0500249
250config SPL_FIT_SIGNATURE
251 bool "Enable signature verification of FIT firmware within SPL"
Robert P. J. Day266aa862017-01-02 16:32:13 -0500252 depends on SPL_DM
Andre Przywara85c07a52017-04-26 01:32:38 +0100253 select SPL_FIT
Robert P. J. Day266aa862017-01-02 16:32:13 -0500254 select SPL_RSA
255
256config SPL_LOAD_FIT
257 bool "Enable SPL loading U-Boot as a FIT"
Andre Przywara85c07a52017-04-26 01:32:38 +0100258 select SPL_FIT
Robert P. J. Day266aa862017-01-02 16:32:13 -0500259 help
260 Normally with the SPL framework a legacy image is generated as part
261 of the build. This contains U-Boot along with information as to
262 where it should be loaded. This option instead enables generation
263 of a FIT (Flat Image Tree) which provides more flexibility. In
264 particular it can handle selecting from multiple device tree
265 and passing the correct one to U-Boot.
266
267config SPL_FIT_IMAGE_POST_PROCESS
268 bool "Enable post-processing of FIT artifacts after loading by the SPL"
269 depends on SPL_LOAD_FIT && TI_SECURE_DEVICE
270 help
271 Allows doing any sort of manipulation to blobs after they got extracted
272 from the U-Boot FIT image like stripping off headers or modifying the
273 size of the blob, verification, authentication, decryption etc. in a
274 platform or board specific way. In order to use this feature a platform
275 or board-specific implementation of board_fit_image_post_process() must
276 be provided. Also, anything done during this post-processing step would
277 need to be comprehended in how the images were prepared before being
278 injected into the FIT creation (i.e. the blobs would have been pre-
279 processed before being added to the FIT image).
280
Andre Przywara1a12fdc2017-04-26 01:32:45 +0100281config SPL_FIT_SOURCE
282 string ".its source file for U-Boot FIT image"
283 depends on SPL_FIT
284 help
285 Specifies a (platform specific) FIT source file to generate the
286 U-Boot FIT image. This could specify further image to load and/or
287 execute.
288
289config SPL_FIT_GENERATOR
290 string ".its file generator script for U-Boot FIT image"
291 depends on SPL_FIT
Andre Przywarad29adf82017-04-26 01:32:48 +0100292 default "board/sunxi/mksunxi_fit_atf.sh" if SPL_LOAD_FIT && ARCH_SUNXI
Andre Przywara1a12fdc2017-04-26 01:32:45 +0100293 help
294 Specifies a (platform specific) script file to generate the FIT
295 source file used to build the U-Boot FIT image file. This gets
296 passed a list of supported device tree file stub names to
297 include in the generated image.
298
Tom Rini71139112017-05-22 14:15:16 -0400299endif # SPL
300
Robert P. J. Day266aa862017-01-02 16:32:13 -0500301endif # FIT
Simon Glass73223f02016-02-22 22:55:43 -0700302
303config OF_BOARD_SETUP
304 bool "Set up board-specific details in device tree before boot"
305 depends on OF_LIBFDT
306 help
307 This causes U-Boot to call ft_board_setup() before booting into
308 the Operating System. This function can set up various
309 board-specific information in the device tree for use by the OS.
310 The device tree is then passed to the OS.
311
312config OF_SYSTEM_SETUP
313 bool "Set up system-specific details in device tree before boot"
314 depends on OF_LIBFDT
315 help
316 This causes U-Boot to call ft_system_setup() before booting into
317 the Operating System. This function can set up various
318 system-specific information in the device tree for use by the OS.
319 The device tree is then passed to the OS.
320
321config OF_STDOUT_VIA_ALIAS
322 bool "Update the device-tree stdout alias from U-Boot"
323 depends on OF_LIBFDT
324 help
325 This uses U-Boot's serial alias from the aliases node to update
326 the device tree passed to the OS. The "linux,stdout-path" property
327 in the chosen node is set to point to the correct serial node.
328 This option currently references CONFIG_CONS_INDEX, which is
329 incorrect when used with device tree as this option does not
330 exist / should not be used.
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900331
Masahiro Yamada51631252014-07-30 14:08:15 +0900332config SYS_EXTRA_OPTIONS
333 string "Extra Options (DEPRECATED)"
Masahiro Yamada51631252014-07-30 14:08:15 +0900334 help
335 The old configuration infrastructure (= mkconfig + boards.cfg)
Masahiro Yamadaed363232014-09-16 16:32:58 +0900336 provided the extra options field. If you have something like
Masahiro Yamada51631252014-07-30 14:08:15 +0900337 "HAS_BAR,BAZ=64", the optional options
338 #define CONFIG_HAS
339 #define CONFIG_BAZ 64
340 will be defined in include/config.h.
341 This option was prepared for the smooth migration from the old
342 configuration to Kconfig. Since this option will be removed sometime,
343 new boards should not use this option.
344
Masahiro Yamada7f7563c2014-10-30 15:30:58 +0900345config SYS_TEXT_BASE
Tom Rini936478e2017-03-14 11:08:11 -0400346 depends on ARC || X86 || ARCH_UNIPHIER || ARCH_ZYNQMP || \
Michal Simek6ebf8a42016-12-16 11:57:17 +0100347 (M68K && !TARGET_ASTRO_MCF5373L) || MICROBLAZE || MIPS || \
Adam Ford7e0ed132017-07-28 08:32:52 -0500348 ARCH_ZYNQ || ARCH_KEYSTONE || ARCH_OMAP2PLUS
Ben Stoltz484cce02015-08-04 12:33:41 -0600349 depends on !EFI_APP
Masahiro Yamada7f7563c2014-10-30 15:30:58 +0900350 hex "Text Base"
351 help
352 TODO: Move CONFIG_SYS_TEXT_BASE for all the architecture
353
Adam Ford7e0ed132017-07-28 08:32:52 -0500354 default 0x80800000 if ARCH_OMAP2PLUS
355
Andreas Dannenbergeba3fbd2016-07-27 12:12:39 -0500356
Alexey Brodkin33d88182015-01-13 18:49:01 +0300357config SYS_CLK_FREQ
Iain Patone71b4222015-03-28 10:26:38 +0000358 depends on ARC || ARCH_SUNXI
Alexey Brodkin33d88182015-01-13 18:49:01 +0300359 int "CPU clock frequency"
360 help
361 TODO: Move CONFIG_SYS_CLK_FREQ for all the architecture
362
Masahiro Yamada63c09412016-11-26 11:02:10 +0900363config ARCH_FIXUP_FDT_MEMORY
364 bool "Enable arch_fixup_memory_banks() call"
Michal Simeke2f88df2016-07-28 09:06:41 +0200365 default y
366 help
367 Enable FDT memory map syncup before OS boot. This feature can be
368 used for booting OS with different memory setup where the part of
369 the memory location should be used for different purpose.
370
Masahiro Yamadae91c3c32014-08-22 19:42:27 +0900371endmenu # Boot images
Masahiro Yamada51631252014-07-30 14:08:15 +0900372
Emmanuel Vadot4db98d32017-01-31 12:17:04 +0100373source "api/Kconfig"
374
Masahiro Yamadaed363232014-09-16 16:32:58 +0900375source "common/Kconfig"
376
Simon Glass72a8cf82016-01-17 20:53:51 -0700377source "cmd/Kconfig"
378
Patrick Delaunaye274ef62017-01-27 11:00:35 +0100379source "disk/Kconfig"
380
Masahiro Yamada783e6a72014-09-22 19:59:05 +0900381source "dts/Kconfig"
382
Masahiro Yamadaed363232014-09-16 16:32:58 +0900383source "net/Kconfig"
384
385source "drivers/Kconfig"
386
387source "fs/Kconfig"
388
389source "lib/Kconfig"
Simon Glass19679822015-02-05 21:41:37 -0700390
391source "test/Kconfig"
Masahiro Yamada61304db2017-01-30 11:12:07 +0900392
393source "scripts/Kconfig"