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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
60 select CMD_BOOTZ
61 select CMD_DHCP
62 select CMD_EXT2
63 select CMD_EXT4
64 select CMD_FAT
65 select CMD_FS_GENERIC
66 select CMD_MII
67 select CMD_PING
68 select HUSH_PARSER
69 help
70 Select this to enable various options and commands which are suitable
71 for building u-boot for booting general purpose Linux distributions.
72
Simon Glassb724bd72015-02-11 16:32:59 -070073config SYS_MALLOC_F
74 bool "Enable malloc() pool before relocation"
Masahiro Yamada326a6822015-03-19 19:42:55 +090075 default y if DM
Simon Glassb724bd72015-02-11 16:32:59 -070076 help
Robert P. J. Day59d7c342016-04-16 05:53:07 -040077 Before relocation, memory is very limited on many platforms. Still,
Simon Glassb724bd72015-02-11 16:32:59 -070078 we can provide a small malloc() pool if needed. Driver model in
79 particular needs this to operate, so that it can allocate the
80 initial serial device and any others that are needed.
81
82config SYS_MALLOC_F_LEN
83 hex "Size of malloc() pool before relocation"
84 depends on SYS_MALLOC_F
85 default 0x400
86 help
Robert P. J. Day59d7c342016-04-16 05:53:07 -040087 Before relocation, memory is very limited on many platforms. Still,
Simon Glassb724bd72015-02-11 16:32:59 -070088 we can provide a small malloc() pool if needed. Driver model in
89 particular needs this to operate, so that it can allocate the
90 initial serial device and any others that are needed.
91
Tom Rini1bf09792014-11-14 09:34:29 +010092menuconfig EXPERT
Przemyslaw Marczak0aa8a4a2015-03-04 14:01:24 +010093 bool "Configure standard U-Boot features (expert users)"
94 default y
95 help
96 This option allows certain base U-Boot options and settings
97 to be disabled or tweaked. This is for specialized
98 environments which can tolerate a "non-standard" U-Boot.
Robert P. J. Day59d7c342016-04-16 05:53:07 -040099 Use this only if you really know what you are doing.
Tom Rini1bf09792014-11-14 09:34:29 +0100100
Przemyslaw Marczak0aa8a4a2015-03-04 14:01:24 +0100101if EXPERT
102 config SYS_MALLOC_CLEAR_ON_INIT
103 bool "Init with zeros the memory reserved for malloc (slow)"
104 default y
105 help
106 This setting is enabled by default. The reserved malloc
107 memory is initialized with zeros, so first malloc calls
108 will return the pointer to the zeroed memory. But this
109 slows the boot time.
110
111 It is recommended to disable it, when CONFIG_SYS_MALLOC_LEN
112 value, has more than few MiB, e.g. when uses bzip2 or bmp logo.
113 Then the boot time can be significantly reduced.
114 Warning:
115 When disabling this, please check if malloc calls, maybe
Robert P. J. Day59d7c342016-04-16 05:53:07 -0400116 should be replaced by calloc - if one expects zeroed memory.
Simon Glass022885c2016-06-30 10:52:20 -0600117
118config TOOLS_DEBUG
119 bool "Enable debug information for tools"
120 help
121 Enable generation of debug information for tools such as mkimage.
122 This can be used for debugging purposes. With debug information
123 it is possible to set breakpoints on particular lines, single-step
124 debug through the source code, etc.
125
Przemyslaw Marczak0aa8a4a2015-03-04 14:01:24 +0100126endif
Masahiro Yamadabb6b1422016-07-25 19:56:03 +0900127
128config PHYS_64BIT
129 bool "64bit physical address support"
130 help
131 Say Y here to support 64bit physical memory address.
132 This can be used not only for 64bit SoCs, but also for
133 large physical address extention on 32bit SoCs.
134
Masahiro Yamada40ad4c42014-11-26 18:42:31 +0900135endmenu # General setup
136
Masahiro Yamadae91c3c32014-08-22 19:42:27 +0900137menu "Boot images"
138
Masahiro Yamada02627352014-10-20 17:45:56 +0900139config SUPPORT_SPL
140 bool
141
Masahiro Yamadacf6bbe42014-10-20 17:45:57 +0900142config SUPPORT_TPL
143 bool
144
Masahiro Yamada51631252014-07-30 14:08:15 +0900145config SPL
146 bool
Masahiro Yamada02627352014-10-20 17:45:56 +0900147 depends on SUPPORT_SPL
Masahiro Yamadad6489642015-02-24 22:26:21 +0900148 prompt "Enable SPL"
Masahiro Yamada51631252014-07-30 14:08:15 +0900149 help
150 If you want to build SPL as well as the normal image, say Y.
151
Hans de Goede1eb0c032015-09-13 14:45:15 +0200152config SPL_SYS_MALLOC_SIMPLE
153 bool
154 depends on SPL
Robert P. J. Day59d7c342016-04-16 05:53:07 -0400155 prompt "Only use malloc_simple functions in the SPL"
Hans de Goede1eb0c032015-09-13 14:45:15 +0200156 help
157 Say Y here to only use the *_simple malloc functions from
Robert P. J. Day59d7c342016-04-16 05:53:07 -0400158 malloc_simple.c, rather then using the versions from dlmalloc.c;
Hans de Goede1eb0c032015-09-13 14:45:15 +0200159 this will make the SPL binary smaller at the cost of more heap
160 usage as the *_simple malloc functions do not re-use free-ed mem.
161
Simon Glassdb910352015-03-03 08:03:00 -0700162config SPL_STACK_R
163 depends on SPL
164 bool "Enable SDRAM location for SPL stack"
165 help
166 SPL starts off execution in SRAM and thus typically has only a small
167 stack available. Since SPL sets up DRAM while in its board_init_f()
168 function, it is possible for the stack to move there before
169 board_init_r() is reached. This option enables a special SDRAM
170 location for the SPL stack. U-Boot SPL switches to this after
171 board_init_f() completes, and before board_init_r() starts.
172
173config SPL_STACK_R_ADDR
174 depends on SPL_STACK_R
175 hex "SDRAM location for SPL stack"
176 help
177 Specify the address in SDRAM for the SPL stack. This will be set up
178 before board_init_r() is called.
179
Hans de Goededcfcb8d2015-09-13 15:04:17 +0200180config SPL_STACK_R_MALLOC_SIMPLE_LEN
181 depends on SPL_STACK_R && SPL_SYS_MALLOC_SIMPLE
182 hex "Size of malloc_simple heap after switching to DRAM SPL stack"
183 default 0x100000
184 help
185 Specify the amount of the stack to use as memory pool for
186 malloc_simple after switching the stack to DRAM. This may be set
187 to give board_init_r() a larger heap then the initial heap in
188 SRAM which is limited to SYS_MALLOC_F_LEN bytes.
189
Simon Glass10172962015-10-17 19:41:19 -0600190config SPL_SEPARATE_BSS
191 depends on SPL
192 bool "BSS section is in a different memory region from text"
193 help
194 Some platforms need a large BSS region in SPL and can provide this
195 because RAM is already set up. In this case BSS can be moved to RAM.
196 This option should then be enabled so that the correct device tree
197 location is used. Normally we put the device tree at the end of BSS
198 but with this option enabled, it goes at _image_binary_end.
199
Masahiro Yamada51631252014-07-30 14:08:15 +0900200config TPL
201 bool
Masahiro Yamadacf6bbe42014-10-20 17:45:57 +0900202 depends on SPL && SUPPORT_TPL
Masahiro Yamadad6489642015-02-24 22:26:21 +0900203 prompt "Enable TPL"
Masahiro Yamada51631252014-07-30 14:08:15 +0900204 help
205 If you want to build TPL as well as the normal image and SPL, say Y.
206
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900207config FIT
208 bool "Support Flattened Image Tree"
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900209 help
210 This option allows to boot the new uImage structrure,
211 Flattened Image Tree. FIT is formally a FDT, which can include
212 images of various types (kernel, FDT blob, ramdisk, etc.)
213 in a single blob. To boot this new uImage structure,
Igor Grinberg1f9ac4a2015-08-26 17:54:45 +0300214 pass the address of the blob to the "bootm" command.
Simon Glass73223f02016-02-22 22:55:43 -0700215 FIT is very flexible, supporting compression, multiple images,
216 multiple configurations, verification through hashing and also
217 verified boot (secure boot using RSA). This option enables that
218 feature.
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900219
Teddy Reed51c14cd2016-06-09 19:18:44 -0700220config SPL_FIT
221 bool "Support Flattened Image Tree within SPL"
222 depends on FIT
223 depends on SPL
224
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900225config FIT_VERBOSE
226 bool "Display verbose messages on FIT boot"
227 depends on FIT
228
229config FIT_SIGNATURE
Ruchika Guptac4beb222015-01-23 16:01:51 +0530230 bool "Enable signature verification of FIT uImages"
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900231 depends on FIT
Chris Kuethe90097982015-02-04 19:16:14 -0800232 depends on DM
Ruchika Guptac4beb222015-01-23 16:01:51 +0530233 select RSA
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900234 help
235 This option enables signature verification of FIT uImages,
gaurav rana94e3c8c2015-02-20 12:51:46 +0530236 using a hash signed and verified using RSA. If
237 CONFIG_SHA_PROG_HW_ACCEL is defined, i.e support for progressive
Simon Glass73223f02016-02-22 22:55:43 -0700238 hashing is available using hardware, then then RSA library will use
239 it. See doc/uImage.FIT/signature.txt for more details.
240
241 WARNING: When relying on signed FIT images with a required signature
242 check the legacy image format is disabled by default, so that
243 unsigned images cannot be loaded. If a board needs the legacy image
244 format support in this case, enable it using
245 CONFIG_IMAGE_FORMAT_LEGACY.
246
Teddy Reed51c14cd2016-06-09 19:18:44 -0700247config SPL_FIT_SIGNATURE
248 bool "Enable signature verification of FIT firmware within SPL"
249 depends on SPL_FIT
250 depends on SPL_DM
251 select SPL_RSA
252
Simon Glass73223f02016-02-22 22:55:43 -0700253config FIT_BEST_MATCH
254 bool "Select the best match for the kernel device tree"
255 depends on FIT
256 help
257 When no configuration is explicitly selected, default to the
258 one whose fdt's compatibility field best matches that of
259 U-Boot itself. A match is considered "best" if it matches the
260 most specific compatibility entry of U-Boot's fdt's root node.
261 The order of entries in the configuration's fdt is ignored.
262
263config FIT_VERBOSE
264 bool "Show verbose messages when FIT images fails"
265 depends on FIT
266 help
267 Generally a system will have valid FIT images so debug messages
268 are a waste of code space. If you are debugging your images then
269 you can enable this option to get more verbose information about
270 failures.
271
272config OF_BOARD_SETUP
273 bool "Set up board-specific details in device tree before boot"
274 depends on OF_LIBFDT
275 help
276 This causes U-Boot to call ft_board_setup() before booting into
277 the Operating System. This function can set up various
278 board-specific information in the device tree for use by the OS.
279 The device tree is then passed to the OS.
280
281config OF_SYSTEM_SETUP
282 bool "Set up system-specific details in device tree before boot"
283 depends on OF_LIBFDT
284 help
285 This causes U-Boot to call ft_system_setup() before booting into
286 the Operating System. This function can set up various
287 system-specific information in the device tree for use by the OS.
288 The device tree is then passed to the OS.
289
290config OF_STDOUT_VIA_ALIAS
291 bool "Update the device-tree stdout alias from U-Boot"
292 depends on OF_LIBFDT
293 help
294 This uses U-Boot's serial alias from the aliases node to update
295 the device tree passed to the OS. The "linux,stdout-path" property
296 in the chosen node is set to point to the correct serial node.
297 This option currently references CONFIG_CONS_INDEX, which is
298 incorrect when used with device tree as this option does not
299 exist / should not be used.
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900300
Masahiro Yamada51631252014-07-30 14:08:15 +0900301config SYS_EXTRA_OPTIONS
302 string "Extra Options (DEPRECATED)"
Masahiro Yamada51631252014-07-30 14:08:15 +0900303 help
304 The old configuration infrastructure (= mkconfig + boards.cfg)
Masahiro Yamadaed363232014-09-16 16:32:58 +0900305 provided the extra options field. If you have something like
Masahiro Yamada51631252014-07-30 14:08:15 +0900306 "HAS_BAR,BAZ=64", the optional options
307 #define CONFIG_HAS
308 #define CONFIG_BAZ 64
309 will be defined in include/config.h.
310 This option was prepared for the smooth migration from the old
311 configuration to Kconfig. Since this option will be removed sometime,
312 new boards should not use this option.
313
Masahiro Yamada7f7563c2014-10-30 15:30:58 +0900314config SYS_TEXT_BASE
Masahiro Yamadac6e18142015-12-11 12:22:24 +0900315 depends on SPARC || ARC || X86 || ARCH_UNIPHIER || ARCH_ZYNQMP || \
Paul Burtonec35e122016-05-17 11:56:39 +0100316 (M68K && !TARGET_ASTRO_MCF5373L) || MICROBLAZE || MIPS
Ben Stoltz484cce02015-08-04 12:33:41 -0600317 depends on !EFI_APP
Masahiro Yamada7f7563c2014-10-30 15:30:58 +0900318 hex "Text Base"
319 help
320 TODO: Move CONFIG_SYS_TEXT_BASE for all the architecture
321
Simon Glassf1dcee52016-02-22 22:55:56 -0700322config SPL_LOAD_FIT
323 bool "Enable SPL loading U-Boot as a FIT"
324 depends on FIT
325 help
326 Normally with the SPL framework a legacy image is generated as part
327 of the build. This contains U-Boot along with information as to
328 where it should be loaded. This option instead enables generation
329 of a FIT (Flat Image Tree) which provides more flexibility. In
330 particular it can handle selecting from multiple device tree
331 and passing the correct one to U-Boot.
332
Daniel Allredda74d1f2016-06-27 09:19:21 -0500333config SPL_FIT_IMAGE_POST_PROCESS
334 bool "Enable post-processing of FIT artifacts after loading by the SPL"
335 depends on SPL_LOAD_FIT && TI_SECURE_DEVICE
336 help
337 Allows doing any sort of manipulation to blobs after they got extracted
338 from the U-Boot FIT image like stripping off headers or modifying the
339 size of the blob, verification, authentication, decryption etc. in a
340 platform or board specific way. In order to use this feature a platform
341 or board-specific implementation of board_fit_image_post_process() must
342 be provided. Also, anything done during this post-processing step would
343 need to be comprehended in how the images were prepared before being
344 injected into the FIT creation (i.e. the blobs would have been pre-
345 processed before being added to the FIT image).
346
Alexey Brodkin33d88182015-01-13 18:49:01 +0300347config SYS_CLK_FREQ
Iain Patone71b4222015-03-28 10:26:38 +0000348 depends on ARC || ARCH_SUNXI
Alexey Brodkin33d88182015-01-13 18:49:01 +0300349 int "CPU clock frequency"
350 help
351 TODO: Move CONFIG_SYS_CLK_FREQ for all the architecture
352
Michal Simeke2f88df2016-07-28 09:06:41 +0200353config ARCH_FIXUP_FDT
354 bool "Enable arch_fixup_fdt() call"
355 depends on ARM || MIPS
356 default y
357 help
358 Enable FDT memory map syncup before OS boot. This feature can be
359 used for booting OS with different memory setup where the part of
360 the memory location should be used for different purpose.
361
Masahiro Yamadae91c3c32014-08-22 19:42:27 +0900362endmenu # Boot images
Masahiro Yamada51631252014-07-30 14:08:15 +0900363
Masahiro Yamadaed363232014-09-16 16:32:58 +0900364source "common/Kconfig"
365
Simon Glass72a8cf82016-01-17 20:53:51 -0700366source "cmd/Kconfig"
367
Masahiro Yamada783e6a72014-09-22 19:59:05 +0900368source "dts/Kconfig"
369
Masahiro Yamadaed363232014-09-16 16:32:58 +0900370source "net/Kconfig"
371
372source "drivers/Kconfig"
373
374source "fs/Kconfig"
375
376source "lib/Kconfig"
Simon Glass19679822015-02-05 21:41:37 -0700377
378source "test/Kconfig"