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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
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"
58 default y if ARCH_SUNXI
59 default n
Tom Rinia391d502016-08-12 08:31:17 -040060 select CMD_BOOTZ if ARM && !ARM64
Masahiro Yamada26959272016-08-12 08:31:16 -040061 select CMD_BOOTI if ARM64
Hans de Goede9f823612016-06-20 23:16:28 +020062 select CMD_DHCP
63 select CMD_EXT2
64 select CMD_EXT4
65 select CMD_FAT
66 select CMD_FS_GENERIC
67 select CMD_MII
68 select CMD_PING
69 select HUSH_PARSER
70 help
71 Select this to enable various options and commands which are suitable
72 for building u-boot for booting general purpose Linux distributions.
73
Simon Glassb724bd72015-02-11 16:32:59 -070074config SYS_MALLOC_F
75 bool "Enable malloc() pool before relocation"
Masahiro Yamada326a6822015-03-19 19:42:55 +090076 default y if DM
Simon Glassb724bd72015-02-11 16:32:59 -070077 help
Robert P. J. Day59d7c342016-04-16 05:53:07 -040078 Before relocation, memory is very limited on many platforms. Still,
Simon Glassb724bd72015-02-11 16:32:59 -070079 we can provide a small malloc() pool if needed. Driver model in
80 particular needs this to operate, so that it can allocate the
81 initial serial device and any others that are needed.
82
83config SYS_MALLOC_F_LEN
84 hex "Size of malloc() pool before relocation"
85 depends on SYS_MALLOC_F
86 default 0x400
87 help
Robert P. J. Day59d7c342016-04-16 05:53:07 -040088 Before relocation, memory is very limited on many platforms. Still,
Simon Glassb724bd72015-02-11 16:32:59 -070089 we can provide a small malloc() pool if needed. Driver model in
90 particular needs this to operate, so that it can allocate the
91 initial serial device and any others that are needed.
92
Tom Rini1bf09792014-11-14 09:34:29 +010093menuconfig EXPERT
Przemyslaw Marczak0aa8a4a2015-03-04 14:01:24 +010094 bool "Configure standard U-Boot features (expert users)"
95 default y
96 help
97 This option allows certain base U-Boot options and settings
98 to be disabled or tweaked. This is for specialized
99 environments which can tolerate a "non-standard" U-Boot.
Robert P. J. Day59d7c342016-04-16 05:53:07 -0400100 Use this only if you really know what you are doing.
Tom Rini1bf09792014-11-14 09:34:29 +0100101
Przemyslaw Marczak0aa8a4a2015-03-04 14:01:24 +0100102if EXPERT
103 config SYS_MALLOC_CLEAR_ON_INIT
104 bool "Init with zeros the memory reserved for malloc (slow)"
105 default y
106 help
107 This setting is enabled by default. The reserved malloc
108 memory is initialized with zeros, so first malloc calls
109 will return the pointer to the zeroed memory. But this
110 slows the boot time.
111
112 It is recommended to disable it, when CONFIG_SYS_MALLOC_LEN
113 value, has more than few MiB, e.g. when uses bzip2 or bmp logo.
114 Then the boot time can be significantly reduced.
115 Warning:
116 When disabling this, please check if malloc calls, maybe
Robert P. J. Day59d7c342016-04-16 05:53:07 -0400117 should be replaced by calloc - if one expects zeroed memory.
Simon Glass022885c2016-06-30 10:52:20 -0600118
119config TOOLS_DEBUG
120 bool "Enable debug information for tools"
121 help
122 Enable generation of debug information for tools such as mkimage.
123 This can be used for debugging purposes. With debug information
124 it is possible to set breakpoints on particular lines, single-step
125 debug through the source code, etc.
126
Przemyslaw Marczak0aa8a4a2015-03-04 14:01:24 +0100127endif
Masahiro Yamadabb6b1422016-07-25 19:56:03 +0900128
129config PHYS_64BIT
130 bool "64bit physical address support"
131 help
132 Say Y here to support 64bit physical memory address.
133 This can be used not only for 64bit SoCs, but also for
134 large physical address extention on 32bit SoCs.
135
Masahiro Yamada40ad4c42014-11-26 18:42:31 +0900136endmenu # General setup
137
Masahiro Yamadae91c3c32014-08-22 19:42:27 +0900138menu "Boot images"
139
Masahiro Yamada02627352014-10-20 17:45:56 +0900140config SUPPORT_SPL
141 bool
142
Masahiro Yamadacf6bbe42014-10-20 17:45:57 +0900143config SUPPORT_TPL
144 bool
145
Masahiro Yamada51631252014-07-30 14:08:15 +0900146config SPL
147 bool
Masahiro Yamada02627352014-10-20 17:45:56 +0900148 depends on SUPPORT_SPL
Masahiro Yamadad6489642015-02-24 22:26:21 +0900149 prompt "Enable SPL"
Masahiro Yamada51631252014-07-30 14:08:15 +0900150 help
151 If you want to build SPL as well as the normal image, say Y.
152
Hans de Goede1eb0c032015-09-13 14:45:15 +0200153config SPL_SYS_MALLOC_SIMPLE
154 bool
155 depends on SPL
Robert P. J. Day59d7c342016-04-16 05:53:07 -0400156 prompt "Only use malloc_simple functions in the SPL"
Hans de Goede1eb0c032015-09-13 14:45:15 +0200157 help
158 Say Y here to only use the *_simple malloc functions from
Robert P. J. Day59d7c342016-04-16 05:53:07 -0400159 malloc_simple.c, rather then using the versions from dlmalloc.c;
Hans de Goede1eb0c032015-09-13 14:45:15 +0200160 this will make the SPL binary smaller at the cost of more heap
161 usage as the *_simple malloc functions do not re-use free-ed mem.
162
Simon Glassdb910352015-03-03 08:03:00 -0700163config SPL_STACK_R
164 depends on SPL
165 bool "Enable SDRAM location for SPL stack"
166 help
167 SPL starts off execution in SRAM and thus typically has only a small
168 stack available. Since SPL sets up DRAM while in its board_init_f()
169 function, it is possible for the stack to move there before
170 board_init_r() is reached. This option enables a special SDRAM
171 location for the SPL stack. U-Boot SPL switches to this after
172 board_init_f() completes, and before board_init_r() starts.
173
174config SPL_STACK_R_ADDR
175 depends on SPL_STACK_R
176 hex "SDRAM location for SPL stack"
177 help
178 Specify the address in SDRAM for the SPL stack. This will be set up
179 before board_init_r() is called.
180
Hans de Goededcfcb8d2015-09-13 15:04:17 +0200181config SPL_STACK_R_MALLOC_SIMPLE_LEN
182 depends on SPL_STACK_R && SPL_SYS_MALLOC_SIMPLE
183 hex "Size of malloc_simple heap after switching to DRAM SPL stack"
184 default 0x100000
185 help
186 Specify the amount of the stack to use as memory pool for
187 malloc_simple after switching the stack to DRAM. This may be set
188 to give board_init_r() a larger heap then the initial heap in
189 SRAM which is limited to SYS_MALLOC_F_LEN bytes.
190
Simon Glass10172962015-10-17 19:41:19 -0600191config SPL_SEPARATE_BSS
192 depends on SPL
193 bool "BSS section is in a different memory region from text"
194 help
195 Some platforms need a large BSS region in SPL and can provide this
196 because RAM is already set up. In this case BSS can be moved to RAM.
197 This option should then be enabled so that the correct device tree
198 location is used. Normally we put the device tree at the end of BSS
199 but with this option enabled, it goes at _image_binary_end.
200
Masahiro Yamada51631252014-07-30 14:08:15 +0900201config TPL
202 bool
Masahiro Yamadacf6bbe42014-10-20 17:45:57 +0900203 depends on SPL && SUPPORT_TPL
Masahiro Yamadad6489642015-02-24 22:26:21 +0900204 prompt "Enable TPL"
Masahiro Yamada51631252014-07-30 14:08:15 +0900205 help
206 If you want to build TPL as well as the normal image and SPL, say Y.
207
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900208config FIT
209 bool "Support Flattened Image Tree"
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900210 help
211 This option allows to boot the new uImage structrure,
212 Flattened Image Tree. FIT is formally a FDT, which can include
213 images of various types (kernel, FDT blob, ramdisk, etc.)
214 in a single blob. To boot this new uImage structure,
Igor Grinberg1f9ac4a2015-08-26 17:54:45 +0300215 pass the address of the blob to the "bootm" command.
Simon Glass73223f02016-02-22 22:55:43 -0700216 FIT is very flexible, supporting compression, multiple images,
217 multiple configurations, verification through hashing and also
218 verified boot (secure boot using RSA). This option enables that
219 feature.
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900220
Teddy Reed51c14cd2016-06-09 19:18:44 -0700221config SPL_FIT
222 bool "Support Flattened Image Tree within SPL"
223 depends on FIT
224 depends on SPL
225
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900226config FIT_VERBOSE
227 bool "Display verbose messages on FIT boot"
228 depends on FIT
229
230config FIT_SIGNATURE
Ruchika Guptac4beb222015-01-23 16:01:51 +0530231 bool "Enable signature verification of FIT uImages"
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900232 depends on FIT
Chris Kuethe90097982015-02-04 19:16:14 -0800233 depends on DM
Ruchika Guptac4beb222015-01-23 16:01:51 +0530234 select RSA
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900235 help
236 This option enables signature verification of FIT uImages,
gaurav rana94e3c8c2015-02-20 12:51:46 +0530237 using a hash signed and verified using RSA. If
238 CONFIG_SHA_PROG_HW_ACCEL is defined, i.e support for progressive
Simon Glass73223f02016-02-22 22:55:43 -0700239 hashing is available using hardware, then then RSA library will use
240 it. See doc/uImage.FIT/signature.txt for more details.
241
242 WARNING: When relying on signed FIT images with a required signature
243 check the legacy image format is disabled by default, so that
244 unsigned images cannot be loaded. If a board needs the legacy image
245 format support in this case, enable it using
246 CONFIG_IMAGE_FORMAT_LEGACY.
247
Teddy Reed51c14cd2016-06-09 19:18:44 -0700248config SPL_FIT_SIGNATURE
249 bool "Enable signature verification of FIT firmware within SPL"
250 depends on SPL_FIT
251 depends on SPL_DM
252 select SPL_RSA
253
Simon Glass73223f02016-02-22 22:55:43 -0700254config FIT_BEST_MATCH
255 bool "Select the best match for the kernel device tree"
256 depends on FIT
257 help
258 When no configuration is explicitly selected, default to the
259 one whose fdt's compatibility field best matches that of
260 U-Boot itself. A match is considered "best" if it matches the
261 most specific compatibility entry of U-Boot's fdt's root node.
262 The order of entries in the configuration's fdt is ignored.
263
264config FIT_VERBOSE
265 bool "Show verbose messages when FIT images fails"
266 depends on FIT
267 help
268 Generally a system will have valid FIT images so debug messages
269 are a waste of code space. If you are debugging your images then
270 you can enable this option to get more verbose information about
271 failures.
272
273config OF_BOARD_SETUP
274 bool "Set up board-specific details in device tree before boot"
275 depends on OF_LIBFDT
276 help
277 This causes U-Boot to call ft_board_setup() before booting into
278 the Operating System. This function can set up various
279 board-specific information in the device tree for use by the OS.
280 The device tree is then passed to the OS.
281
282config OF_SYSTEM_SETUP
283 bool "Set up system-specific details in device tree before boot"
284 depends on OF_LIBFDT
285 help
286 This causes U-Boot to call ft_system_setup() before booting into
287 the Operating System. This function can set up various
288 system-specific information in the device tree for use by the OS.
289 The device tree is then passed to the OS.
290
291config OF_STDOUT_VIA_ALIAS
292 bool "Update the device-tree stdout alias from U-Boot"
293 depends on OF_LIBFDT
294 help
295 This uses U-Boot's serial alias from the aliases node to update
296 the device tree passed to the OS. The "linux,stdout-path" property
297 in the chosen node is set to point to the correct serial node.
298 This option currently references CONFIG_CONS_INDEX, which is
299 incorrect when used with device tree as this option does not
300 exist / should not be used.
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900301
Masahiro Yamada51631252014-07-30 14:08:15 +0900302config SYS_EXTRA_OPTIONS
303 string "Extra Options (DEPRECATED)"
Masahiro Yamada51631252014-07-30 14:08:15 +0900304 help
305 The old configuration infrastructure (= mkconfig + boards.cfg)
Masahiro Yamadaed363232014-09-16 16:32:58 +0900306 provided the extra options field. If you have something like
Masahiro Yamada51631252014-07-30 14:08:15 +0900307 "HAS_BAR,BAZ=64", the optional options
308 #define CONFIG_HAS
309 #define CONFIG_BAZ 64
310 will be defined in include/config.h.
311 This option was prepared for the smooth migration from the old
312 configuration to Kconfig. Since this option will be removed sometime,
313 new boards should not use this option.
314
Masahiro Yamada7f7563c2014-10-30 15:30:58 +0900315config SYS_TEXT_BASE
Masahiro Yamadac6e18142015-12-11 12:22:24 +0900316 depends on SPARC || ARC || X86 || ARCH_UNIPHIER || ARCH_ZYNQMP || \
Paul Burtonec35e122016-05-17 11:56:39 +0100317 (M68K && !TARGET_ASTRO_MCF5373L) || MICROBLAZE || MIPS
Ben Stoltz484cce02015-08-04 12:33:41 -0600318 depends on !EFI_APP
Masahiro Yamada7f7563c2014-10-30 15:30:58 +0900319 hex "Text Base"
320 help
321 TODO: Move CONFIG_SYS_TEXT_BASE for all the architecture
322
Simon Glassf1dcee52016-02-22 22:55:56 -0700323config SPL_LOAD_FIT
324 bool "Enable SPL loading U-Boot as a FIT"
325 depends on FIT
326 help
327 Normally with the SPL framework a legacy image is generated as part
328 of the build. This contains U-Boot along with information as to
329 where it should be loaded. This option instead enables generation
330 of a FIT (Flat Image Tree) which provides more flexibility. In
331 particular it can handle selecting from multiple device tree
332 and passing the correct one to U-Boot.
333
Daniel Allredda74d1f2016-06-27 09:19:21 -0500334config SPL_FIT_IMAGE_POST_PROCESS
335 bool "Enable post-processing of FIT artifacts after loading by the SPL"
336 depends on SPL_LOAD_FIT && TI_SECURE_DEVICE
337 help
338 Allows doing any sort of manipulation to blobs after they got extracted
339 from the U-Boot FIT image like stripping off headers or modifying the
340 size of the blob, verification, authentication, decryption etc. in a
341 platform or board specific way. In order to use this feature a platform
342 or board-specific implementation of board_fit_image_post_process() must
343 be provided. Also, anything done during this post-processing step would
344 need to be comprehended in how the images were prepared before being
345 injected into the FIT creation (i.e. the blobs would have been pre-
346 processed before being added to the FIT image).
347
Andreas Dannenbergeba3fbd2016-07-27 12:12:39 -0500348config FIT_IMAGE_POST_PROCESS
349 bool "Enable post-processing of FIT artifacts after loading by U-Boot"
350 depends on FIT && TI_SECURE_DEVICE
351 help
352 Allows doing any sort of manipulation to blobs after they got extracted
353 from FIT images like stripping off headers or modifying the size of the
354 blob, verification, authentication, decryption etc. in a platform or
355 board specific way. In order to use this feature a platform or board-
356 specific implementation of board_fit_image_post_process() must be
357 provided. Also, anything done during this post-processing step would
358 need to be comprehended in how the images were prepared before being
359 injected into the FIT creation (i.e. the blobs would have been pre-
360 processed before being added to the FIT image).
361
Alexey Brodkin33d88182015-01-13 18:49:01 +0300362config SYS_CLK_FREQ
Iain Patone71b4222015-03-28 10:26:38 +0000363 depends on ARC || ARCH_SUNXI
Alexey Brodkin33d88182015-01-13 18:49:01 +0300364 int "CPU clock frequency"
365 help
366 TODO: Move CONFIG_SYS_CLK_FREQ for all the architecture
367
Michal Simeke2f88df2016-07-28 09:06:41 +0200368config ARCH_FIXUP_FDT
369 bool "Enable arch_fixup_fdt() call"
370 depends on ARM || MIPS
371 default y
372 help
373 Enable FDT memory map syncup before OS boot. This feature can be
374 used for booting OS with different memory setup where the part of
375 the memory location should be used for different purpose.
376
Masahiro Yamadae91c3c32014-08-22 19:42:27 +0900377endmenu # Boot images
Masahiro Yamada51631252014-07-30 14:08:15 +0900378
Masahiro Yamadaed363232014-09-16 16:32:58 +0900379source "common/Kconfig"
380
Simon Glass72a8cf82016-01-17 20:53:51 -0700381source "cmd/Kconfig"
382
Masahiro Yamada783e6a72014-09-22 19:59:05 +0900383source "dts/Kconfig"
384
Masahiro Yamadaed363232014-09-16 16:32:58 +0900385source "net/Kconfig"
386
387source "drivers/Kconfig"
388
389source "fs/Kconfig"
390
391source "lib/Kconfig"
Simon Glass19679822015-02-05 21:41:37 -0700392
393source "test/Kconfig"