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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"
Tom Rini3337e3a2016-11-29 09:14:57 -050058 default y if ARCH_SUNXI || TEGRA
Alexander Grafb99ebaf2016-11-17 01:03:02 +010059 default y if ARCH_LS2080A
Andreas Färber70b8bd72017-01-15 20:22:30 +010060 default y if ARCH_MESON
Romain Perier7bdedf12017-01-11 11:46:14 +010061 default y if ARCH_ROCKCHIP
Hans de Goede9f823612016-06-20 23:16:28 +020062 default n
Tom Rinia391d502016-08-12 08:31:17 -040063 select CMD_BOOTZ if ARM && !ARM64
Masahiro Yamada26959272016-08-12 08:31:16 -040064 select CMD_BOOTI if ARM64
Hans de Goede9f823612016-06-20 23:16:28 +020065 select CMD_DHCP
Yann E. MORINbfb380b2016-11-13 21:59:52 +010066 select CMD_PXE
Hans de Goede9f823612016-06-20 23:16:28 +020067 select CMD_EXT2
68 select CMD_EXT4
69 select CMD_FAT
70 select CMD_FS_GENERIC
71 select CMD_MII
72 select CMD_PING
Patrick Delaunayb331cd62017-01-27 11:00:42 +010073 select CMD_PART
Hans de Goede9f823612016-06-20 23:16:28 +020074 select HUSH_PARSER
75 help
76 Select this to enable various options and commands which are suitable
77 for building u-boot for booting general purpose Linux distributions.
78
Simon Glassb724bd72015-02-11 16:32:59 -070079config SYS_MALLOC_F
80 bool "Enable malloc() pool before relocation"
Masahiro Yamada326a6822015-03-19 19:42:55 +090081 default y if DM
Simon Glassb724bd72015-02-11 16:32:59 -070082 help
Robert P. J. Day59d7c342016-04-16 05:53:07 -040083 Before relocation, memory is very limited on many platforms. Still,
Simon Glassb724bd72015-02-11 16:32:59 -070084 we can provide a small malloc() pool if needed. Driver model in
85 particular needs this to operate, so that it can allocate the
86 initial serial device and any others that are needed.
87
88config SYS_MALLOC_F_LEN
89 hex "Size of malloc() pool before relocation"
90 depends on SYS_MALLOC_F
91 default 0x400
92 help
Robert P. J. Day59d7c342016-04-16 05:53:07 -040093 Before relocation, memory is very limited on many platforms. Still,
Simon Glassb724bd72015-02-11 16:32:59 -070094 we can provide a small malloc() pool if needed. Driver model in
95 particular needs this to operate, so that it can allocate the
96 initial serial device and any others that are needed.
97
Tom Rini1bf09792014-11-14 09:34:29 +010098menuconfig EXPERT
Przemyslaw Marczak0aa8a4a2015-03-04 14:01:24 +010099 bool "Configure standard U-Boot features (expert users)"
100 default y
101 help
102 This option allows certain base U-Boot options and settings
103 to be disabled or tweaked. This is for specialized
104 environments which can tolerate a "non-standard" U-Boot.
Robert P. J. Day59d7c342016-04-16 05:53:07 -0400105 Use this only if you really know what you are doing.
Tom Rini1bf09792014-11-14 09:34:29 +0100106
Przemyslaw Marczak0aa8a4a2015-03-04 14:01:24 +0100107if EXPERT
108 config SYS_MALLOC_CLEAR_ON_INIT
109 bool "Init with zeros the memory reserved for malloc (slow)"
110 default y
111 help
112 This setting is enabled by default. The reserved malloc
113 memory is initialized with zeros, so first malloc calls
114 will return the pointer to the zeroed memory. But this
115 slows the boot time.
116
117 It is recommended to disable it, when CONFIG_SYS_MALLOC_LEN
118 value, has more than few MiB, e.g. when uses bzip2 or bmp logo.
119 Then the boot time can be significantly reduced.
120 Warning:
121 When disabling this, please check if malloc calls, maybe
Robert P. J. Day59d7c342016-04-16 05:53:07 -0400122 should be replaced by calloc - if one expects zeroed memory.
Simon Glass022885c2016-06-30 10:52:20 -0600123
124config TOOLS_DEBUG
125 bool "Enable debug information for tools"
126 help
127 Enable generation of debug information for tools such as mkimage.
128 This can be used for debugging purposes. With debug information
129 it is possible to set breakpoints on particular lines, single-step
130 debug through the source code, etc.
131
Robert P. J. Day266aa862017-01-02 16:32:13 -0500132endif # EXPERT
Masahiro Yamadabb6b1422016-07-25 19:56:03 +0900133
134config PHYS_64BIT
135 bool "64bit physical address support"
136 help
137 Say Y here to support 64bit physical memory address.
138 This can be used not only for 64bit SoCs, but also for
139 large physical address extention on 32bit SoCs.
140
Masahiro Yamada40ad4c42014-11-26 18:42:31 +0900141endmenu # General setup
142
Masahiro Yamadae91c3c32014-08-22 19:42:27 +0900143menu "Boot images"
144
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900145config FIT
146 bool "Support Flattened Image Tree"
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900147 help
Robert P. J. Day266aa862017-01-02 16:32:13 -0500148 This option allows you to boot the new uImage structure,
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900149 Flattened Image Tree. FIT is formally a FDT, which can include
150 images of various types (kernel, FDT blob, ramdisk, etc.)
151 in a single blob. To boot this new uImage structure,
Igor Grinberg1f9ac4a2015-08-26 17:54:45 +0300152 pass the address of the blob to the "bootm" command.
Simon Glass73223f02016-02-22 22:55:43 -0700153 FIT is very flexible, supporting compression, multiple images,
154 multiple configurations, verification through hashing and also
Robert P. J. Day266aa862017-01-02 16:32:13 -0500155 verified boot (secure boot using RSA).
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900156
Robert P. J. Day266aa862017-01-02 16:32:13 -0500157if FIT
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900158
159config FIT_SIGNATURE
Ruchika Guptac4beb222015-01-23 16:01:51 +0530160 bool "Enable signature verification of FIT uImages"
Chris Kuethe90097982015-02-04 19:16:14 -0800161 depends on DM
Ruchika Guptac4beb222015-01-23 16:01:51 +0530162 select RSA
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900163 help
164 This option enables signature verification of FIT uImages,
gaurav rana94e3c8c2015-02-20 12:51:46 +0530165 using a hash signed and verified using RSA. If
166 CONFIG_SHA_PROG_HW_ACCEL is defined, i.e support for progressive
Robert P. J. Day266aa862017-01-02 16:32:13 -0500167 hashing is available using hardware, then the RSA library will use
Simon Glass73223f02016-02-22 22:55:43 -0700168 it. See doc/uImage.FIT/signature.txt for more details.
169
170 WARNING: When relying on signed FIT images with a required signature
171 check the legacy image format is disabled by default, so that
172 unsigned images cannot be loaded. If a board needs the legacy image
173 format support in this case, enable it using
174 CONFIG_IMAGE_FORMAT_LEGACY.
175
Robert P. J. Day266aa862017-01-02 16:32:13 -0500176config FIT_VERBOSE
177 bool "Show verbose messages when FIT images fail"
178 help
179 Generally a system will have valid FIT images so debug messages
180 are a waste of code space. If you are debugging your images then
181 you can enable this option to get more verbose information about
182 failures.
Teddy Reed51c14cd2016-06-09 19:18:44 -0700183
Simon Glass73223f02016-02-22 22:55:43 -0700184config FIT_BEST_MATCH
185 bool "Select the best match for the kernel device tree"
Simon Glass73223f02016-02-22 22:55:43 -0700186 help
187 When no configuration is explicitly selected, default to the
188 one whose fdt's compatibility field best matches that of
189 U-Boot itself. A match is considered "best" if it matches the
190 most specific compatibility entry of U-Boot's fdt's root node.
191 The order of entries in the configuration's fdt is ignored.
192
Robert P. J. Day266aa862017-01-02 16:32:13 -0500193config FIT_IMAGE_POST_PROCESS
194 bool "Enable post-processing of FIT artifacts after loading by U-Boot"
195 depends on TI_SECURE_DEVICE
Simon Glass73223f02016-02-22 22:55:43 -0700196 help
Robert P. J. Day266aa862017-01-02 16:32:13 -0500197 Allows doing any sort of manipulation to blobs after they got extracted
198 from FIT images like stripping off headers or modifying the size of the
199 blob, verification, authentication, decryption etc. in a platform or
200 board specific way. In order to use this feature a platform or board-
201 specific implementation of board_fit_image_post_process() must be
202 provided. Also, anything done during this post-processing step would
203 need to be comprehended in how the images were prepared before being
204 injected into the FIT creation (i.e. the blobs would have been pre-
205 processed before being added to the FIT image).
206
207config SPL_FIT
208 bool "Support Flattened Image Tree within SPL"
209 depends on SPL
210
211config SPL_FIT_SIGNATURE
212 bool "Enable signature verification of FIT firmware within SPL"
213 depends on SPL_FIT
214 depends on SPL_DM
215 select SPL_RSA
216
217config SPL_LOAD_FIT
218 bool "Enable SPL loading U-Boot as a FIT"
219 help
220 Normally with the SPL framework a legacy image is generated as part
221 of the build. This contains U-Boot along with information as to
222 where it should be loaded. This option instead enables generation
223 of a FIT (Flat Image Tree) which provides more flexibility. In
224 particular it can handle selecting from multiple device tree
225 and passing the correct one to U-Boot.
226
227config SPL_FIT_IMAGE_POST_PROCESS
228 bool "Enable post-processing of FIT artifacts after loading by the SPL"
229 depends on SPL_LOAD_FIT && TI_SECURE_DEVICE
230 help
231 Allows doing any sort of manipulation to blobs after they got extracted
232 from the U-Boot FIT image like stripping off headers or modifying the
233 size of the blob, verification, authentication, decryption etc. in a
234 platform or board specific way. In order to use this feature a platform
235 or board-specific implementation of board_fit_image_post_process() must
236 be provided. Also, anything done during this post-processing step would
237 need to be comprehended in how the images were prepared before being
238 injected into the FIT creation (i.e. the blobs would have been pre-
239 processed before being added to the FIT image).
240
241endif # FIT
Simon Glass73223f02016-02-22 22:55:43 -0700242
243config OF_BOARD_SETUP
244 bool "Set up board-specific details in device tree before boot"
245 depends on OF_LIBFDT
246 help
247 This causes U-Boot to call ft_board_setup() before booting into
248 the Operating System. This function can set up various
249 board-specific information in the device tree for use by the OS.
250 The device tree is then passed to the OS.
251
252config OF_SYSTEM_SETUP
253 bool "Set up system-specific details in device tree before boot"
254 depends on OF_LIBFDT
255 help
256 This causes U-Boot to call ft_system_setup() before booting into
257 the Operating System. This function can set up various
258 system-specific information in the device tree for use by the OS.
259 The device tree is then passed to the OS.
260
261config OF_STDOUT_VIA_ALIAS
262 bool "Update the device-tree stdout alias from U-Boot"
263 depends on OF_LIBFDT
264 help
265 This uses U-Boot's serial alias from the aliases node to update
266 the device tree passed to the OS. The "linux,stdout-path" property
267 in the chosen node is set to point to the correct serial node.
268 This option currently references CONFIG_CONS_INDEX, which is
269 incorrect when used with device tree as this option does not
270 exist / should not be used.
Masahiro Yamadab6cf4432014-11-13 19:29:06 +0900271
Masahiro Yamada51631252014-07-30 14:08:15 +0900272config SYS_EXTRA_OPTIONS
273 string "Extra Options (DEPRECATED)"
Masahiro Yamada51631252014-07-30 14:08:15 +0900274 help
275 The old configuration infrastructure (= mkconfig + boards.cfg)
Masahiro Yamadaed363232014-09-16 16:32:58 +0900276 provided the extra options field. If you have something like
Masahiro Yamada51631252014-07-30 14:08:15 +0900277 "HAS_BAR,BAZ=64", the optional options
278 #define CONFIG_HAS
279 #define CONFIG_BAZ 64
280 will be defined in include/config.h.
281 This option was prepared for the smooth migration from the old
282 configuration to Kconfig. Since this option will be removed sometime,
283 new boards should not use this option.
284
Masahiro Yamada7f7563c2014-10-30 15:30:58 +0900285config SYS_TEXT_BASE
Masahiro Yamadac6e18142015-12-11 12:22:24 +0900286 depends on SPARC || ARC || X86 || ARCH_UNIPHIER || ARCH_ZYNQMP || \
Michal Simek6ebf8a42016-12-16 11:57:17 +0100287 (M68K && !TARGET_ASTRO_MCF5373L) || MICROBLAZE || MIPS || \
288 ARCH_ZYNQ
Ben Stoltz484cce02015-08-04 12:33:41 -0600289 depends on !EFI_APP
Masahiro Yamada7f7563c2014-10-30 15:30:58 +0900290 hex "Text Base"
291 help
292 TODO: Move CONFIG_SYS_TEXT_BASE for all the architecture
293
Andreas Dannenbergeba3fbd2016-07-27 12:12:39 -0500294
Alexey Brodkin33d88182015-01-13 18:49:01 +0300295config SYS_CLK_FREQ
Iain Patone71b4222015-03-28 10:26:38 +0000296 depends on ARC || ARCH_SUNXI
Alexey Brodkin33d88182015-01-13 18:49:01 +0300297 int "CPU clock frequency"
298 help
299 TODO: Move CONFIG_SYS_CLK_FREQ for all the architecture
300
Masahiro Yamada63c09412016-11-26 11:02:10 +0900301config ARCH_FIXUP_FDT_MEMORY
302 bool "Enable arch_fixup_memory_banks() call"
Michal Simeke2f88df2016-07-28 09:06:41 +0200303 default y
304 help
305 Enable FDT memory map syncup before OS boot. This feature can be
306 used for booting OS with different memory setup where the part of
307 the memory location should be used for different purpose.
308
Masahiro Yamadae91c3c32014-08-22 19:42:27 +0900309endmenu # Boot images
Masahiro Yamada51631252014-07-30 14:08:15 +0900310
Emmanuel Vadot4db98d32017-01-31 12:17:04 +0100311source "api/Kconfig"
312
Masahiro Yamadaed363232014-09-16 16:32:58 +0900313source "common/Kconfig"
314
Simon Glass72a8cf82016-01-17 20:53:51 -0700315source "cmd/Kconfig"
316
Patrick Delaunaye274ef62017-01-27 11:00:35 +0100317source "disk/Kconfig"
318
Masahiro Yamada783e6a72014-09-22 19:59:05 +0900319source "dts/Kconfig"
320
Masahiro Yamadaed363232014-09-16 16:32:58 +0900321source "net/Kconfig"
322
323source "drivers/Kconfig"
324
325source "fs/Kconfig"
326
327source "lib/Kconfig"
Simon Glass19679822015-02-05 21:41:37 -0700328
329source "test/Kconfig"
Masahiro Yamada61304db2017-01-30 11:12:07 +0900330
331source "scripts/Kconfig"