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Masahiro Yamada51631252014-07-30 14:08:15 +09001#
2# For a description of the syntax of this configuration file,
3# see Documentation/kbuild/kconfig-language.txt.
4#
5mainmenu "U-Boot $UBOOTVERSION Configuration"
6
7config UBOOTVERSION
8 string
9 option env="UBOOTVERSION"
10
Simon Glass66afaef2015-02-24 22:26:19 +090011# Allow defaults in arch-specific code to override any given here
12source "arch/Kconfig"
13
Masahiro Yamada51631252014-07-30 14:08:15 +090014menu "General setup"
15
Masahiro Yamadae91c3c32014-08-22 19:42:27 +090016config LOCALVERSION
17 string "Local version - append to U-Boot release"
Masahiro Yamadae91c3c32014-08-22 19:42:27 +090018 help
19 Append an extra string to the end of your U-Boot version.
20 This will show up on your boot log, for example.
21 The string you set here will be appended after the contents of
22 any files with a filename matching localversion* in your
23 object and source tree, in that order. Your total string can
24 be a maximum of 64 characters.
25
26config LOCALVERSION_AUTO
27 bool "Automatically append version information to the version string"
Masahiro Yamadae91c3c32014-08-22 19:42:27 +090028 default y
29 help
30 This will try to automatically determine if the current tree is a
31 release tree by looking for git tags that belong to the current
32 top of tree revision.
33
34 A string of the format -gxxxxxxxx will be added to the localversion
35 if a git-based tree is found. The string generated by this will be
36 appended after any matching localversion* files, and after the value
37 set in CONFIG_LOCALVERSION.
38
39 (The actual string used here is the first eight characters produced
40 by running the command:
41
42 $ git rev-parse --verify HEAD
43
44 which is done within the script "scripts/setlocalversion".)
45
Masahiro Yamada4a8ed8e2014-08-22 19:42:29 +090046config CC_OPTIMIZE_FOR_SIZE
47 bool "Optimize for size"
Masahiro Yamada4a8ed8e2014-08-22 19:42:29 +090048 default y
49 help
50 Enabling this option will pass "-Os" instead of "-O2" to gcc
51 resulting in a smaller U-Boot image.
52
53 This option is enabled by default for U-Boot.
54
Simon Glassb724bd72015-02-11 16:32:59 -070055config SYS_MALLOC_F
56 bool "Enable malloc() pool before relocation"
Masahiro Yamada326a6822015-03-19 19:42:55 +090057 default y if DM
Simon Glassb724bd72015-02-11 16:32:59 -070058 help
59 Before relocation memory is very limited on many platforms. Still,
60 we can provide a small malloc() pool if needed. Driver model in
61 particular needs this to operate, so that it can allocate the
62 initial serial device and any others that are needed.
63
64config SYS_MALLOC_F_LEN
65 hex "Size of malloc() pool before relocation"
66 depends on SYS_MALLOC_F
67 default 0x400
68 help
69 Before relocation memory is very limited on many platforms. Still,
70 we can provide a small malloc() pool if needed. Driver model in
71 particular needs this to operate, so that it can allocate the
72 initial serial device and any others that are needed.
73
Tom Rini1bf09792014-11-14 09:34:29 +010074menuconfig EXPERT
Przemyslaw Marczak0aa8a4a2015-03-04 14:01:24 +010075 bool "Configure standard U-Boot features (expert users)"
76 default y
77 help
78 This option allows certain base U-Boot options and settings
79 to be disabled or tweaked. This is for specialized
80 environments which can tolerate a "non-standard" U-Boot.
81 Only use this if you really know what you are doing.
Tom Rini1bf09792014-11-14 09:34:29 +010082
Przemyslaw Marczak0aa8a4a2015-03-04 14:01:24 +010083if EXPERT
84 config SYS_MALLOC_CLEAR_ON_INIT
85 bool "Init with zeros the memory reserved for malloc (slow)"
86 default y
87 help
88 This setting is enabled by default. The reserved malloc
89 memory is initialized with zeros, so first malloc calls
90 will return the pointer to the zeroed memory. But this
91 slows the boot time.
92
93 It is recommended to disable it, when CONFIG_SYS_MALLOC_LEN
94 value, has more than few MiB, e.g. when uses bzip2 or bmp logo.
95 Then the boot time can be significantly reduced.
96 Warning:
97 When disabling this, please check if malloc calls, maybe
98 should be replaced by calloc - if expects zeroed memory.
99endif
Masahiro Yamada40ad4c42014-11-26 18:42:31 +0900100endmenu # General setup
101
Masahiro Yamadae91c3c32014-08-22 19:42:27 +0900102menu "Boot images"
103
Masahiro Yamada02627352014-10-20 17:45:56 +0900104config SUPPORT_SPL
105 bool
106
Masahiro Yamadacf6bbe42014-10-20 17:45:57 +0900107config SUPPORT_TPL
108 bool
109
Masahiro Yamada51631252014-07-30 14:08:15 +0900110config SPL
111 bool
Masahiro Yamada02627352014-10-20 17:45:56 +0900112 depends on SUPPORT_SPL
Masahiro Yamadad6489642015-02-24 22:26:21 +0900113 prompt "Enable SPL"
Masahiro Yamada51631252014-07-30 14:08:15 +0900114 help
115 If you want to build SPL as well as the normal image, say Y.
116
Hans de Goede1eb0c032015-09-13 14:45:15 +0200117config SPL_SYS_MALLOC_SIMPLE
118 bool
119 depends on SPL
120 prompt "Only use malloc_simple functions in the spl"
121 help
122 Say Y here to only use the *_simple malloc functions from
123 malloc_simple.c, rather then using the versions from dlmalloc.c
124 this will make the SPL binary smaller at the cost of more heap
125 usage as the *_simple malloc functions do not re-use free-ed mem.
126
Simon Glassdb910352015-03-03 08:03:00 -0700127config SPL_STACK_R
128 depends on SPL
129 bool "Enable SDRAM location for SPL stack"
130 help
131 SPL starts off execution in SRAM and thus typically has only a small
132 stack available. Since SPL sets up DRAM while in its board_init_f()
133 function, it is possible for the stack to move there before
134 board_init_r() is reached. This option enables a special SDRAM
135 location for the SPL stack. U-Boot SPL switches to this after
136 board_init_f() completes, and before board_init_r() starts.
137
138config SPL_STACK_R_ADDR
139 depends on SPL_STACK_R
140 hex "SDRAM location for SPL stack"
141 help
142 Specify the address in SDRAM for the SPL stack. This will be set up
143 before board_init_r() is called.
144
Hans de Goededcfcb8d2015-09-13 15:04:17 +0200145config SPL_STACK_R_MALLOC_SIMPLE_LEN
146 depends on SPL_STACK_R && SPL_SYS_MALLOC_SIMPLE
147 hex "Size of malloc_simple heap after switching to DRAM SPL stack"
148 default 0x100000
149 help
150 Specify the amount of the stack to use as memory pool for
151 malloc_simple after switching the stack to DRAM. This may be set
152 to give board_init_r() a larger heap then the initial heap in
153 SRAM which is limited to SYS_MALLOC_F_LEN bytes.
154
Simon Glass10172962015-10-17 19:41:19 -0600155config SPL_SEPARATE_BSS
156 depends on SPL
157 bool "BSS section is in a different memory region from text"
158 help
159 Some platforms need a large BSS region in SPL and can provide this
160 because RAM is already set up. In this case BSS can be moved to RAM.
161 This option should then be enabled so that the correct device tree
162 location is used. Normally we put the device tree at the end of BSS
163 but with this option enabled, it goes at _image_binary_end.
164
Masahiro Yamada51631252014-07-30 14:08:15 +0900165config TPL
166 bool
Masahiro Yamadacf6bbe42014-10-20 17:45:57 +0900167 depends on SPL && SUPPORT_TPL
Masahiro Yamadad6489642015-02-24 22:26:21 +0900168 prompt "Enable TPL"
Masahiro Yamada51631252014-07-30 14:08:15 +0900169 help
170 If you want to build TPL as well as the normal image and SPL, say Y.
171
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900172config FIT
173 bool "Support Flattened Image Tree"
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900174 help
175 This option allows to boot the new uImage structrure,
176 Flattened Image Tree. FIT is formally a FDT, which can include
177 images of various types (kernel, FDT blob, ramdisk, etc.)
178 in a single blob. To boot this new uImage structure,
Igor Grinberg1f9ac4a2015-08-26 17:54:45 +0300179 pass the address of the blob to the "bootm" command.
Simon Glass73223f02016-02-22 22:55:43 -0700180 FIT is very flexible, supporting compression, multiple images,
181 multiple configurations, verification through hashing and also
182 verified boot (secure boot using RSA). This option enables that
183 feature.
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900184
185config FIT_VERBOSE
186 bool "Display verbose messages on FIT boot"
187 depends on FIT
188
189config FIT_SIGNATURE
Ruchika Guptac4beb222015-01-23 16:01:51 +0530190 bool "Enable signature verification of FIT uImages"
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900191 depends on FIT
Chris Kuethe90097982015-02-04 19:16:14 -0800192 depends on DM
Ruchika Guptac4beb222015-01-23 16:01:51 +0530193 select RSA
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900194 help
195 This option enables signature verification of FIT uImages,
gaurav rana94e3c8c2015-02-20 12:51:46 +0530196 using a hash signed and verified using RSA. If
197 CONFIG_SHA_PROG_HW_ACCEL is defined, i.e support for progressive
Simon Glass73223f02016-02-22 22:55:43 -0700198 hashing is available using hardware, then then RSA library will use
199 it. See doc/uImage.FIT/signature.txt for more details.
200
201 WARNING: When relying on signed FIT images with a required signature
202 check the legacy image format is disabled by default, so that
203 unsigned images cannot be loaded. If a board needs the legacy image
204 format support in this case, enable it using
205 CONFIG_IMAGE_FORMAT_LEGACY.
206
207config FIT_BEST_MATCH
208 bool "Select the best match for the kernel device tree"
209 depends on FIT
210 help
211 When no configuration is explicitly selected, default to the
212 one whose fdt's compatibility field best matches that of
213 U-Boot itself. A match is considered "best" if it matches the
214 most specific compatibility entry of U-Boot's fdt's root node.
215 The order of entries in the configuration's fdt is ignored.
216
217config FIT_VERBOSE
218 bool "Show verbose messages when FIT images fails"
219 depends on FIT
220 help
221 Generally a system will have valid FIT images so debug messages
222 are a waste of code space. If you are debugging your images then
223 you can enable this option to get more verbose information about
224 failures.
225
226config OF_BOARD_SETUP
227 bool "Set up board-specific details in device tree before boot"
228 depends on OF_LIBFDT
229 help
230 This causes U-Boot to call ft_board_setup() before booting into
231 the Operating System. This function can set up various
232 board-specific information in the device tree for use by the OS.
233 The device tree is then passed to the OS.
234
235config OF_SYSTEM_SETUP
236 bool "Set up system-specific details in device tree before boot"
237 depends on OF_LIBFDT
238 help
239 This causes U-Boot to call ft_system_setup() before booting into
240 the Operating System. This function can set up various
241 system-specific information in the device tree for use by the OS.
242 The device tree is then passed to the OS.
243
244config OF_STDOUT_VIA_ALIAS
245 bool "Update the device-tree stdout alias from U-Boot"
246 depends on OF_LIBFDT
247 help
248 This uses U-Boot's serial alias from the aliases node to update
249 the device tree passed to the OS. The "linux,stdout-path" property
250 in the chosen node is set to point to the correct serial node.
251 This option currently references CONFIG_CONS_INDEX, which is
252 incorrect when used with device tree as this option does not
253 exist / should not be used.
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900254
Masahiro Yamada51631252014-07-30 14:08:15 +0900255config SYS_EXTRA_OPTIONS
256 string "Extra Options (DEPRECATED)"
Masahiro Yamada51631252014-07-30 14:08:15 +0900257 help
258 The old configuration infrastructure (= mkconfig + boards.cfg)
Masahiro Yamadaed363232014-09-16 16:32:58 +0900259 provided the extra options field. If you have something like
Masahiro Yamada51631252014-07-30 14:08:15 +0900260 "HAS_BAR,BAZ=64", the optional options
261 #define CONFIG_HAS
262 #define CONFIG_BAZ 64
263 will be defined in include/config.h.
264 This option was prepared for the smooth migration from the old
265 configuration to Kconfig. Since this option will be removed sometime,
266 new boards should not use this option.
267
Masahiro Yamada7f7563c2014-10-30 15:30:58 +0900268config SYS_TEXT_BASE
Masahiro Yamadac6e18142015-12-11 12:22:24 +0900269 depends on SPARC || ARC || X86 || ARCH_UNIPHIER || ARCH_ZYNQMP || \
Masahiro Yamadab7664762015-12-11 12:22:26 +0900270 (M68K && !TARGET_ASTRO_MCF5373L) || MICROBLAZE
Ben Stoltz484cce02015-08-04 12:33:41 -0600271 depends on !EFI_APP
Masahiro Yamada7f7563c2014-10-30 15:30:58 +0900272 hex "Text Base"
273 help
274 TODO: Move CONFIG_SYS_TEXT_BASE for all the architecture
275
Simon Glassf1dcee52016-02-22 22:55:56 -0700276config SPL_LOAD_FIT
277 bool "Enable SPL loading U-Boot as a FIT"
278 depends on FIT
279 help
280 Normally with the SPL framework a legacy image is generated as part
281 of the build. This contains U-Boot along with information as to
282 where it should be loaded. This option instead enables generation
283 of a FIT (Flat Image Tree) which provides more flexibility. In
284 particular it can handle selecting from multiple device tree
285 and passing the correct one to U-Boot.
286
Alexey Brodkin33d88182015-01-13 18:49:01 +0300287config SYS_CLK_FREQ
Iain Patone71b4222015-03-28 10:26:38 +0000288 depends on ARC || ARCH_SUNXI
Alexey Brodkin33d88182015-01-13 18:49:01 +0300289 int "CPU clock frequency"
290 help
291 TODO: Move CONFIG_SYS_CLK_FREQ for all the architecture
292
Masahiro Yamadae91c3c32014-08-22 19:42:27 +0900293endmenu # Boot images
Masahiro Yamada51631252014-07-30 14:08:15 +0900294
Masahiro Yamadaed363232014-09-16 16:32:58 +0900295source "common/Kconfig"
296
Simon Glass72a8cf82016-01-17 20:53:51 -0700297source "cmd/Kconfig"
298
Masahiro Yamada783e6a72014-09-22 19:59:05 +0900299source "dts/Kconfig"
300
Masahiro Yamadaed363232014-09-16 16:32:58 +0900301source "net/Kconfig"
302
303source "drivers/Kconfig"
304
305source "fs/Kconfig"
306
307source "lib/Kconfig"
Simon Glass19679822015-02-05 21:41:37 -0700308
309source "test/Kconfig"