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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
Simon Glassb724bd72015-02-11 16:32:59 -070056config SYS_MALLOC_F
57 bool "Enable malloc() pool before relocation"
Masahiro Yamada326a6822015-03-19 19:42:55 +090058 default y if DM
Simon Glassb724bd72015-02-11 16:32:59 -070059 help
Robert P. J. Day59d7c342016-04-16 05:53:07 -040060 Before relocation, memory is very limited on many platforms. Still,
Simon Glassb724bd72015-02-11 16:32:59 -070061 we can provide a small malloc() pool if needed. Driver model in
62 particular needs this to operate, so that it can allocate the
63 initial serial device and any others that are needed.
64
65config SYS_MALLOC_F_LEN
66 hex "Size of malloc() pool before relocation"
67 depends on SYS_MALLOC_F
68 default 0x400
69 help
Robert P. J. Day59d7c342016-04-16 05:53:07 -040070 Before relocation, memory is very limited on many platforms. Still,
Simon Glassb724bd72015-02-11 16:32:59 -070071 we can provide a small malloc() pool if needed. Driver model in
72 particular needs this to operate, so that it can allocate the
73 initial serial device and any others that are needed.
74
Tom Rini1bf09792014-11-14 09:34:29 +010075menuconfig EXPERT
Przemyslaw Marczak0aa8a4a2015-03-04 14:01:24 +010076 bool "Configure standard U-Boot features (expert users)"
77 default y
78 help
79 This option allows certain base U-Boot options and settings
80 to be disabled or tweaked. This is for specialized
81 environments which can tolerate a "non-standard" U-Boot.
Robert P. J. Day59d7c342016-04-16 05:53:07 -040082 Use this only if you really know what you are doing.
Tom Rini1bf09792014-11-14 09:34:29 +010083
Przemyslaw Marczak0aa8a4a2015-03-04 14:01:24 +010084if EXPERT
85 config SYS_MALLOC_CLEAR_ON_INIT
86 bool "Init with zeros the memory reserved for malloc (slow)"
87 default y
88 help
89 This setting is enabled by default. The reserved malloc
90 memory is initialized with zeros, so first malloc calls
91 will return the pointer to the zeroed memory. But this
92 slows the boot time.
93
94 It is recommended to disable it, when CONFIG_SYS_MALLOC_LEN
95 value, has more than few MiB, e.g. when uses bzip2 or bmp logo.
96 Then the boot time can be significantly reduced.
97 Warning:
98 When disabling this, please check if malloc calls, maybe
Robert P. J. Day59d7c342016-04-16 05:53:07 -040099 should be replaced by calloc - if one expects zeroed memory.
Przemyslaw Marczak0aa8a4a2015-03-04 14:01:24 +0100100endif
Masahiro Yamada40ad4c42014-11-26 18:42:31 +0900101endmenu # General setup
102
Masahiro Yamadae91c3c32014-08-22 19:42:27 +0900103menu "Boot images"
104
Masahiro Yamada02627352014-10-20 17:45:56 +0900105config SUPPORT_SPL
106 bool
107
Masahiro Yamadacf6bbe42014-10-20 17:45:57 +0900108config SUPPORT_TPL
109 bool
110
Masahiro Yamada51631252014-07-30 14:08:15 +0900111config SPL
112 bool
Masahiro Yamada02627352014-10-20 17:45:56 +0900113 depends on SUPPORT_SPL
Masahiro Yamadad6489642015-02-24 22:26:21 +0900114 prompt "Enable SPL"
Masahiro Yamada51631252014-07-30 14:08:15 +0900115 help
116 If you want to build SPL as well as the normal image, say Y.
117
Hans de Goede1eb0c032015-09-13 14:45:15 +0200118config SPL_SYS_MALLOC_SIMPLE
119 bool
120 depends on SPL
Robert P. J. Day59d7c342016-04-16 05:53:07 -0400121 prompt "Only use malloc_simple functions in the SPL"
Hans de Goede1eb0c032015-09-13 14:45:15 +0200122 help
123 Say Y here to only use the *_simple malloc functions from
Robert P. J. Day59d7c342016-04-16 05:53:07 -0400124 malloc_simple.c, rather then using the versions from dlmalloc.c;
Hans de Goede1eb0c032015-09-13 14:45:15 +0200125 this will make the SPL binary smaller at the cost of more heap
126 usage as the *_simple malloc functions do not re-use free-ed mem.
127
Simon Glassdb910352015-03-03 08:03:00 -0700128config SPL_STACK_R
129 depends on SPL
130 bool "Enable SDRAM location for SPL stack"
131 help
132 SPL starts off execution in SRAM and thus typically has only a small
133 stack available. Since SPL sets up DRAM while in its board_init_f()
134 function, it is possible for the stack to move there before
135 board_init_r() is reached. This option enables a special SDRAM
136 location for the SPL stack. U-Boot SPL switches to this after
137 board_init_f() completes, and before board_init_r() starts.
138
139config SPL_STACK_R_ADDR
140 depends on SPL_STACK_R
141 hex "SDRAM location for SPL stack"
142 help
143 Specify the address in SDRAM for the SPL stack. This will be set up
144 before board_init_r() is called.
145
Hans de Goededcfcb8d2015-09-13 15:04:17 +0200146config SPL_STACK_R_MALLOC_SIMPLE_LEN
147 depends on SPL_STACK_R && SPL_SYS_MALLOC_SIMPLE
148 hex "Size of malloc_simple heap after switching to DRAM SPL stack"
149 default 0x100000
150 help
151 Specify the amount of the stack to use as memory pool for
152 malloc_simple after switching the stack to DRAM. This may be set
153 to give board_init_r() a larger heap then the initial heap in
154 SRAM which is limited to SYS_MALLOC_F_LEN bytes.
155
Simon Glass10172962015-10-17 19:41:19 -0600156config SPL_SEPARATE_BSS
157 depends on SPL
158 bool "BSS section is in a different memory region from text"
159 help
160 Some platforms need a large BSS region in SPL and can provide this
161 because RAM is already set up. In this case BSS can be moved to RAM.
162 This option should then be enabled so that the correct device tree
163 location is used. Normally we put the device tree at the end of BSS
164 but with this option enabled, it goes at _image_binary_end.
165
Masahiro Yamada51631252014-07-30 14:08:15 +0900166config TPL
167 bool
Masahiro Yamadacf6bbe42014-10-20 17:45:57 +0900168 depends on SPL && SUPPORT_TPL
Masahiro Yamadad6489642015-02-24 22:26:21 +0900169 prompt "Enable TPL"
Masahiro Yamada51631252014-07-30 14:08:15 +0900170 help
171 If you want to build TPL as well as the normal image and SPL, say Y.
172
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900173config FIT
174 bool "Support Flattened Image Tree"
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900175 help
176 This option allows to boot the new uImage structrure,
177 Flattened Image Tree. FIT is formally a FDT, which can include
178 images of various types (kernel, FDT blob, ramdisk, etc.)
179 in a single blob. To boot this new uImage structure,
Igor Grinberg1f9ac4a2015-08-26 17:54:45 +0300180 pass the address of the blob to the "bootm" command.
Simon Glass73223f02016-02-22 22:55:43 -0700181 FIT is very flexible, supporting compression, multiple images,
182 multiple configurations, verification through hashing and also
183 verified boot (secure boot using RSA). This option enables that
184 feature.
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900185
186config FIT_VERBOSE
187 bool "Display verbose messages on FIT boot"
188 depends on FIT
189
190config FIT_SIGNATURE
Ruchika Guptac4beb222015-01-23 16:01:51 +0530191 bool "Enable signature verification of FIT uImages"
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900192 depends on FIT
Chris Kuethe90097982015-02-04 19:16:14 -0800193 depends on DM
Ruchika Guptac4beb222015-01-23 16:01:51 +0530194 select RSA
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900195 help
196 This option enables signature verification of FIT uImages,
gaurav rana94e3c8c2015-02-20 12:51:46 +0530197 using a hash signed and verified using RSA. If
198 CONFIG_SHA_PROG_HW_ACCEL is defined, i.e support for progressive
Simon Glass73223f02016-02-22 22:55:43 -0700199 hashing is available using hardware, then then RSA library will use
200 it. See doc/uImage.FIT/signature.txt for more details.
201
202 WARNING: When relying on signed FIT images with a required signature
203 check the legacy image format is disabled by default, so that
204 unsigned images cannot be loaded. If a board needs the legacy image
205 format support in this case, enable it using
206 CONFIG_IMAGE_FORMAT_LEGACY.
207
208config FIT_BEST_MATCH
209 bool "Select the best match for the kernel device tree"
210 depends on FIT
211 help
212 When no configuration is explicitly selected, default to the
213 one whose fdt's compatibility field best matches that of
214 U-Boot itself. A match is considered "best" if it matches the
215 most specific compatibility entry of U-Boot's fdt's root node.
216 The order of entries in the configuration's fdt is ignored.
217
218config FIT_VERBOSE
219 bool "Show verbose messages when FIT images fails"
220 depends on FIT
221 help
222 Generally a system will have valid FIT images so debug messages
223 are a waste of code space. If you are debugging your images then
224 you can enable this option to get more verbose information about
225 failures.
226
227config OF_BOARD_SETUP
228 bool "Set up board-specific details in device tree before boot"
229 depends on OF_LIBFDT
230 help
231 This causes U-Boot to call ft_board_setup() before booting into
232 the Operating System. This function can set up various
233 board-specific information in the device tree for use by the OS.
234 The device tree is then passed to the OS.
235
236config OF_SYSTEM_SETUP
237 bool "Set up system-specific details in device tree before boot"
238 depends on OF_LIBFDT
239 help
240 This causes U-Boot to call ft_system_setup() before booting into
241 the Operating System. This function can set up various
242 system-specific information in the device tree for use by the OS.
243 The device tree is then passed to the OS.
244
245config OF_STDOUT_VIA_ALIAS
246 bool "Update the device-tree stdout alias from U-Boot"
247 depends on OF_LIBFDT
248 help
249 This uses U-Boot's serial alias from the aliases node to update
250 the device tree passed to the OS. The "linux,stdout-path" property
251 in the chosen node is set to point to the correct serial node.
252 This option currently references CONFIG_CONS_INDEX, which is
253 incorrect when used with device tree as this option does not
254 exist / should not be used.
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900255
Masahiro Yamada51631252014-07-30 14:08:15 +0900256config SYS_EXTRA_OPTIONS
257 string "Extra Options (DEPRECATED)"
Masahiro Yamada51631252014-07-30 14:08:15 +0900258 help
259 The old configuration infrastructure (= mkconfig + boards.cfg)
Masahiro Yamadaed363232014-09-16 16:32:58 +0900260 provided the extra options field. If you have something like
Masahiro Yamada51631252014-07-30 14:08:15 +0900261 "HAS_BAR,BAZ=64", the optional options
262 #define CONFIG_HAS
263 #define CONFIG_BAZ 64
264 will be defined in include/config.h.
265 This option was prepared for the smooth migration from the old
266 configuration to Kconfig. Since this option will be removed sometime,
267 new boards should not use this option.
268
Masahiro Yamada7f7563c2014-10-30 15:30:58 +0900269config SYS_TEXT_BASE
Masahiro Yamadac6e18142015-12-11 12:22:24 +0900270 depends on SPARC || ARC || X86 || ARCH_UNIPHIER || ARCH_ZYNQMP || \
Paul Burtonec35e122016-05-17 11:56:39 +0100271 (M68K && !TARGET_ASTRO_MCF5373L) || MICROBLAZE || MIPS
Ben Stoltz484cce02015-08-04 12:33:41 -0600272 depends on !EFI_APP
Masahiro Yamada7f7563c2014-10-30 15:30:58 +0900273 hex "Text Base"
274 help
275 TODO: Move CONFIG_SYS_TEXT_BASE for all the architecture
276
Simon Glassf1dcee52016-02-22 22:55:56 -0700277config SPL_LOAD_FIT
278 bool "Enable SPL loading U-Boot as a FIT"
279 depends on FIT
280 help
281 Normally with the SPL framework a legacy image is generated as part
282 of the build. This contains U-Boot along with information as to
283 where it should be loaded. This option instead enables generation
284 of a FIT (Flat Image Tree) which provides more flexibility. In
285 particular it can handle selecting from multiple device tree
286 and passing the correct one to U-Boot.
287
Alexey Brodkin33d88182015-01-13 18:49:01 +0300288config SYS_CLK_FREQ
Iain Patone71b4222015-03-28 10:26:38 +0000289 depends on ARC || ARCH_SUNXI
Alexey Brodkin33d88182015-01-13 18:49:01 +0300290 int "CPU clock frequency"
291 help
292 TODO: Move CONFIG_SYS_CLK_FREQ for all the architecture
293
Masahiro Yamadae91c3c32014-08-22 19:42:27 +0900294endmenu # Boot images
Masahiro Yamada51631252014-07-30 14:08:15 +0900295
Masahiro Yamadaed363232014-09-16 16:32:58 +0900296source "common/Kconfig"
297
Simon Glass72a8cf82016-01-17 20:53:51 -0700298source "cmd/Kconfig"
299
Masahiro Yamada783e6a72014-09-22 19:59:05 +0900300source "dts/Kconfig"
301
Masahiro Yamadaed363232014-09-16 16:32:58 +0900302source "net/Kconfig"
303
304source "drivers/Kconfig"
305
306source "fs/Kconfig"
307
308source "lib/Kconfig"
Simon Glass19679822015-02-05 21:41:37 -0700309
310source "test/Kconfig"