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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.
Przemyslaw Marczak0aa8a4a2015-03-04 14:01:24 +0100117endif
Masahiro Yamada40ad4c42014-11-26 18:42:31 +0900118endmenu # General setup
119
Masahiro Yamadae91c3c32014-08-22 19:42:27 +0900120menu "Boot images"
121
Masahiro Yamada02627352014-10-20 17:45:56 +0900122config SUPPORT_SPL
123 bool
124
Masahiro Yamadacf6bbe42014-10-20 17:45:57 +0900125config SUPPORT_TPL
126 bool
127
Masahiro Yamada51631252014-07-30 14:08:15 +0900128config SPL
129 bool
Masahiro Yamada02627352014-10-20 17:45:56 +0900130 depends on SUPPORT_SPL
Masahiro Yamadad6489642015-02-24 22:26:21 +0900131 prompt "Enable SPL"
Masahiro Yamada51631252014-07-30 14:08:15 +0900132 help
133 If you want to build SPL as well as the normal image, say Y.
134
Hans de Goede1eb0c032015-09-13 14:45:15 +0200135config SPL_SYS_MALLOC_SIMPLE
136 bool
137 depends on SPL
Robert P. J. Day59d7c342016-04-16 05:53:07 -0400138 prompt "Only use malloc_simple functions in the SPL"
Hans de Goede1eb0c032015-09-13 14:45:15 +0200139 help
140 Say Y here to only use the *_simple malloc functions from
Robert P. J. Day59d7c342016-04-16 05:53:07 -0400141 malloc_simple.c, rather then using the versions from dlmalloc.c;
Hans de Goede1eb0c032015-09-13 14:45:15 +0200142 this will make the SPL binary smaller at the cost of more heap
143 usage as the *_simple malloc functions do not re-use free-ed mem.
144
Simon Glassdb910352015-03-03 08:03:00 -0700145config SPL_STACK_R
146 depends on SPL
147 bool "Enable SDRAM location for SPL stack"
148 help
149 SPL starts off execution in SRAM and thus typically has only a small
150 stack available. Since SPL sets up DRAM while in its board_init_f()
151 function, it is possible for the stack to move there before
152 board_init_r() is reached. This option enables a special SDRAM
153 location for the SPL stack. U-Boot SPL switches to this after
154 board_init_f() completes, and before board_init_r() starts.
155
156config SPL_STACK_R_ADDR
157 depends on SPL_STACK_R
158 hex "SDRAM location for SPL stack"
159 help
160 Specify the address in SDRAM for the SPL stack. This will be set up
161 before board_init_r() is called.
162
Hans de Goededcfcb8d2015-09-13 15:04:17 +0200163config SPL_STACK_R_MALLOC_SIMPLE_LEN
164 depends on SPL_STACK_R && SPL_SYS_MALLOC_SIMPLE
165 hex "Size of malloc_simple heap after switching to DRAM SPL stack"
166 default 0x100000
167 help
168 Specify the amount of the stack to use as memory pool for
169 malloc_simple after switching the stack to DRAM. This may be set
170 to give board_init_r() a larger heap then the initial heap in
171 SRAM which is limited to SYS_MALLOC_F_LEN bytes.
172
Simon Glass10172962015-10-17 19:41:19 -0600173config SPL_SEPARATE_BSS
174 depends on SPL
175 bool "BSS section is in a different memory region from text"
176 help
177 Some platforms need a large BSS region in SPL and can provide this
178 because RAM is already set up. In this case BSS can be moved to RAM.
179 This option should then be enabled so that the correct device tree
180 location is used. Normally we put the device tree at the end of BSS
181 but with this option enabled, it goes at _image_binary_end.
182
Masahiro Yamada51631252014-07-30 14:08:15 +0900183config TPL
184 bool
Masahiro Yamadacf6bbe42014-10-20 17:45:57 +0900185 depends on SPL && SUPPORT_TPL
Masahiro Yamadad6489642015-02-24 22:26:21 +0900186 prompt "Enable TPL"
Masahiro Yamada51631252014-07-30 14:08:15 +0900187 help
188 If you want to build TPL as well as the normal image and SPL, say Y.
189
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900190config FIT
191 bool "Support Flattened Image Tree"
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900192 help
193 This option allows to boot the new uImage structrure,
194 Flattened Image Tree. FIT is formally a FDT, which can include
195 images of various types (kernel, FDT blob, ramdisk, etc.)
196 in a single blob. To boot this new uImage structure,
Igor Grinberg1f9ac4a2015-08-26 17:54:45 +0300197 pass the address of the blob to the "bootm" command.
Simon Glass73223f02016-02-22 22:55:43 -0700198 FIT is very flexible, supporting compression, multiple images,
199 multiple configurations, verification through hashing and also
200 verified boot (secure boot using RSA). This option enables that
201 feature.
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900202
Teddy Reed51c14cd2016-06-09 19:18:44 -0700203config SPL_FIT
204 bool "Support Flattened Image Tree within SPL"
205 depends on FIT
206 depends on SPL
207
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900208config FIT_VERBOSE
209 bool "Display verbose messages on FIT boot"
210 depends on FIT
211
212config FIT_SIGNATURE
Ruchika Guptac4beb222015-01-23 16:01:51 +0530213 bool "Enable signature verification of FIT uImages"
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900214 depends on FIT
Chris Kuethe90097982015-02-04 19:16:14 -0800215 depends on DM
Ruchika Guptac4beb222015-01-23 16:01:51 +0530216 select RSA
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900217 help
218 This option enables signature verification of FIT uImages,
gaurav rana94e3c8c2015-02-20 12:51:46 +0530219 using a hash signed and verified using RSA. If
220 CONFIG_SHA_PROG_HW_ACCEL is defined, i.e support for progressive
Simon Glass73223f02016-02-22 22:55:43 -0700221 hashing is available using hardware, then then RSA library will use
222 it. See doc/uImage.FIT/signature.txt for more details.
223
224 WARNING: When relying on signed FIT images with a required signature
225 check the legacy image format is disabled by default, so that
226 unsigned images cannot be loaded. If a board needs the legacy image
227 format support in this case, enable it using
228 CONFIG_IMAGE_FORMAT_LEGACY.
229
Teddy Reed51c14cd2016-06-09 19:18:44 -0700230config SPL_FIT_SIGNATURE
231 bool "Enable signature verification of FIT firmware within SPL"
232 depends on SPL_FIT
233 depends on SPL_DM
234 select SPL_RSA
235
Simon Glass73223f02016-02-22 22:55:43 -0700236config FIT_BEST_MATCH
237 bool "Select the best match for the kernel device tree"
238 depends on FIT
239 help
240 When no configuration is explicitly selected, default to the
241 one whose fdt's compatibility field best matches that of
242 U-Boot itself. A match is considered "best" if it matches the
243 most specific compatibility entry of U-Boot's fdt's root node.
244 The order of entries in the configuration's fdt is ignored.
245
246config FIT_VERBOSE
247 bool "Show verbose messages when FIT images fails"
248 depends on FIT
249 help
250 Generally a system will have valid FIT images so debug messages
251 are a waste of code space. If you are debugging your images then
252 you can enable this option to get more verbose information about
253 failures.
254
255config OF_BOARD_SETUP
256 bool "Set up board-specific details in device tree before boot"
257 depends on OF_LIBFDT
258 help
259 This causes U-Boot to call ft_board_setup() before booting into
260 the Operating System. This function can set up various
261 board-specific information in the device tree for use by the OS.
262 The device tree is then passed to the OS.
263
264config OF_SYSTEM_SETUP
265 bool "Set up system-specific details in device tree before boot"
266 depends on OF_LIBFDT
267 help
268 This causes U-Boot to call ft_system_setup() before booting into
269 the Operating System. This function can set up various
270 system-specific information in the device tree for use by the OS.
271 The device tree is then passed to the OS.
272
273config OF_STDOUT_VIA_ALIAS
274 bool "Update the device-tree stdout alias from U-Boot"
275 depends on OF_LIBFDT
276 help
277 This uses U-Boot's serial alias from the aliases node to update
278 the device tree passed to the OS. The "linux,stdout-path" property
279 in the chosen node is set to point to the correct serial node.
280 This option currently references CONFIG_CONS_INDEX, which is
281 incorrect when used with device tree as this option does not
282 exist / should not be used.
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900283
Masahiro Yamada51631252014-07-30 14:08:15 +0900284config SYS_EXTRA_OPTIONS
285 string "Extra Options (DEPRECATED)"
Masahiro Yamada51631252014-07-30 14:08:15 +0900286 help
287 The old configuration infrastructure (= mkconfig + boards.cfg)
Masahiro Yamadaed363232014-09-16 16:32:58 +0900288 provided the extra options field. If you have something like
Masahiro Yamada51631252014-07-30 14:08:15 +0900289 "HAS_BAR,BAZ=64", the optional options
290 #define CONFIG_HAS
291 #define CONFIG_BAZ 64
292 will be defined in include/config.h.
293 This option was prepared for the smooth migration from the old
294 configuration to Kconfig. Since this option will be removed sometime,
295 new boards should not use this option.
296
Masahiro Yamada7f7563c2014-10-30 15:30:58 +0900297config SYS_TEXT_BASE
Masahiro Yamadac6e18142015-12-11 12:22:24 +0900298 depends on SPARC || ARC || X86 || ARCH_UNIPHIER || ARCH_ZYNQMP || \
Paul Burtonec35e122016-05-17 11:56:39 +0100299 (M68K && !TARGET_ASTRO_MCF5373L) || MICROBLAZE || MIPS
Ben Stoltz484cce02015-08-04 12:33:41 -0600300 depends on !EFI_APP
Masahiro Yamada7f7563c2014-10-30 15:30:58 +0900301 hex "Text Base"
302 help
303 TODO: Move CONFIG_SYS_TEXT_BASE for all the architecture
304
Simon Glassf1dcee52016-02-22 22:55:56 -0700305config SPL_LOAD_FIT
306 bool "Enable SPL loading U-Boot as a FIT"
307 depends on FIT
308 help
309 Normally with the SPL framework a legacy image is generated as part
310 of the build. This contains U-Boot along with information as to
311 where it should be loaded. This option instead enables generation
312 of a FIT (Flat Image Tree) which provides more flexibility. In
313 particular it can handle selecting from multiple device tree
314 and passing the correct one to U-Boot.
315
Alexey Brodkin33d88182015-01-13 18:49:01 +0300316config SYS_CLK_FREQ
Iain Patone71b4222015-03-28 10:26:38 +0000317 depends on ARC || ARCH_SUNXI
Alexey Brodkin33d88182015-01-13 18:49:01 +0300318 int "CPU clock frequency"
319 help
320 TODO: Move CONFIG_SYS_CLK_FREQ for all the architecture
321
Masahiro Yamadae91c3c32014-08-22 19:42:27 +0900322endmenu # Boot images
Masahiro Yamada51631252014-07-30 14:08:15 +0900323
Masahiro Yamadaed363232014-09-16 16:32:58 +0900324source "common/Kconfig"
325
Simon Glass72a8cf82016-01-17 20:53:51 -0700326source "cmd/Kconfig"
327
Masahiro Yamada783e6a72014-09-22 19:59:05 +0900328source "dts/Kconfig"
329
Masahiro Yamadaed363232014-09-16 16:32:58 +0900330source "net/Kconfig"
331
332source "drivers/Kconfig"
333
334source "fs/Kconfig"
335
336source "lib/Kconfig"
Simon Glass19679822015-02-05 21:41:37 -0700337
338source "test/Kconfig"