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6mainmenu "U-Boot $UBOOTVERSION Configuration"
7
8config UBOOTVERSION
9 string
10 option env="UBOOTVERSION"
11
12
13source "arch/Kconfig"
14
15menu "General setup"
16
17config BROKEN
18 bool
19 help
20 This option cannot be enabled. It is used as dependency
21 for broken and incomplete features.
22
23config LOCALVERSION
24 string "Local version - append to U-Boot release"
25 help
26 Append an extra string to the end of your U-Boot version.
27 This will show up in your boot log, for example.
28 The string you set here will be appended after the contents of
29 any files with a filename matching localversion* in your
30 object and source tree, in that order. Your total string can
31 be a maximum of 64 characters.
32
33config LOCALVERSION_AUTO
34 bool "Automatically append version information to the version string"
35 default y
36 help
37 This will try to automatically determine if the current tree is a
38 release tree by looking for Git tags that belong to the current
39 top of tree revision.
40
41 A string of the format -gxxxxxxxx will be added to the localversion
42 if a Git-based tree is found. The string generated by this will be
43 appended after any matching localversion* files, and after the value
44 set in CONFIG_LOCALVERSION.
45
46 (The actual string used here is the first eight characters produced
47 by running the command:
48
49 $ git rev-parse --verify HEAD
50
51 which is done within the script "scripts/setlocalversion".)
52
53config CC_OPTIMIZE_FOR_SIZE
54 bool "Optimize for size"
55 default y
56 help
57 Enabling this option will pass "-Os" instead of "-O2" to gcc
58 resulting in a smaller U-Boot image.
59
60 This option is enabled by default for U-Boot.
61
62config DISTRO_DEFAULTS
63 bool "Select defaults suitable for booting general purpose Linux distributions"
64 default y if ARCH_SUNXI || TEGRA
65 default y if ARCH_LS2080A
66 default y if ARCH_MESON
67 default y if ARCH_ROCKCHIP
68 default n
69 imply USE_BOOTCOMMAND
70 select CMD_BOOTZ if ARM && !ARM64
71 select CMD_BOOTI if ARM64
72 select CMD_DHCP if NET
73 select CMD_PXE if NET
74 select CMD_EXT2
75 select CMD_EXT4
76 select CMD_FAT
77 select CMD_FS_GENERIC
78 select CMD_MII if NET
79 select CMD_PING if NET
80 select CMD_PART
81 select HUSH_PARSER
82 help
83 Select this to enable various options and commands which are suitable
84 for building u-boot for booting general purpose Linux distributions.
85
86config SYS_MALLOC_F
87 bool "Enable malloc() pool before relocation"
88 default y if DM
89 help
90 Before relocation, memory is very limited on many platforms. Still,
91 we can provide a small malloc() pool if needed. Driver model in
92 particular needs this to operate, so that it can allocate the
93 initial serial device and any others that are needed.
94
95config SYS_MALLOC_F_LEN
96 hex "Size of malloc() pool before relocation"
97 depends on SYS_MALLOC_F
98 default 0x400
99 help
100 Before relocation, memory is very limited on many platforms. Still,
101 we can provide a small malloc() pool if needed. Driver model in
102 particular needs this to operate, so that it can allocate the
103 initial serial device and any others that are needed.
104
105config SYS_MALLOC_LEN
106 hex "Define memory for Dynamic allocation"
107 depends on ARCH_ZYNQ
108 help
109 This defines memory to be allocated for Dynamic allocation
110 TODO: Use for other architectures
111
112config SPL_SYS_MALLOC_F_LEN
113 hex "Size of malloc() pool in SPL before relocation"
114 depends on SYS_MALLOC_F
115 default SYS_MALLOC_F_LEN
116 help
117 Before relocation, memory is very limited on many platforms. Still,
118 we can provide a small malloc() pool if needed. Driver model in
119 particular needs this to operate, so that it can allocate the
120 initial serial device and any others that are needed.
121
122config TPL_SYS_MALLOC_F_LEN
123 hex "Size of malloc() pool in TPL before relocation"
124 depends on SYS_MALLOC_F
125 default SYS_MALLOC_F_LEN
126 help
127 Before relocation, memory is very limited on many platforms. Still,
128 we can provide a small malloc() pool if needed. Driver model in
129 particular needs this to operate, so that it can allocate the
130 initial serial device and any others that are needed.
131
132menuconfig EXPERT
133 bool "Configure standard U-Boot features (expert users)"
134 default y
135 help
136 This option allows certain base U-Boot options and settings
137 to be disabled or tweaked. This is for specialized
138 environments which can tolerate a "non-standard" U-Boot.
139 Use this only if you really know what you are doing.
140
141if EXPERT
142 config SYS_MALLOC_CLEAR_ON_INIT
143 bool "Init with zeros the memory reserved for malloc (slow)"
144 default y
145 help
146 This setting is enabled by default. The reserved malloc
147 memory is initialized with zeros, so first malloc calls
148 will return the pointer to the zeroed memory. But this
149 slows the boot time.
150
151 It is recommended to disable it, when CONFIG_SYS_MALLOC_LEN
152 value, has more than few MiB, e.g. when uses bzip2 or bmp logo.
153 Then the boot time can be significantly reduced.
154 Warning:
155 When disabling this, please check if malloc calls, maybe
156 should be replaced by calloc - if one expects zeroed memory.
157
158config TOOLS_DEBUG
159 bool "Enable debug information for tools"
160 help
161 Enable generation of debug information for tools such as mkimage.
162 This can be used for debugging purposes. With debug information
163 it is possible to set breakpoints on particular lines, single-step
164 debug through the source code, etc.
165
166endif
167
168config PHYS_64BIT
169 bool "64bit physical address support"
170 help
171 Say Y here to support 64bit physical memory address.
172 This can be used not only for 64bit SoCs, but also for
173 large physical address extention on 32bit SoCs.
174
175config BUILD_ROM
176 bool "Build U-Boot as BIOS replacement"
177 depends on X86
178 help
179 This option allows to build a ROM version of U-Boot.
180 The build process generally requires several binary blobs
181 which are not shipped in the U-Boot source tree.
182 Please, see doc/README.x86 for details.
183
184endmenu
185
186menu "Boot images"
187
188config ANDROID_BOOT_IMAGE
189 bool "Enable support for Android Boot Images"
190 default y if FASTBOOT
191 help
192 This enables support for booting images which use the Android
193 image format header.
194
195config FIT
196 bool "Support Flattened Image Tree"
197 select MD5
198 select SHA1
199 help
200 This option allows you to boot the new uImage structure,
201 Flattened Image Tree. FIT is formally a FDT, which can include
202 images of various types (kernel, FDT blob, ramdisk, etc.)
203 in a single blob. To boot this new uImage structure,
204 pass the address of the blob to the "bootm" command.
205 FIT is very flexible, supporting compression, multiple images,
206 multiple configurations, verification through hashing and also
207 verified boot (secure boot using RSA).
208
209if FIT
210
211config FIT_ENABLE_SHA256_SUPPORT
212 bool "Support SHA256 checksum of FIT image contents"
213 select SHA256
214 default y
215 help
216 Enable this to support SHA256 checksum of FIT image contents. A
217 SHA256 checksum is a 256-bit (32-byte) hash value used to check that
218 the image contents have not been corrupted. SHA256 is recommended
219 for use in secure applications since (as at 2016) there is no known
220 feasible attack that could produce a 'collision' with differing
221 input data. Use this for the highest security. Note that only the
222 SHA256 variant is supported: SHA512 and others are not currently
223 supported in U-Boot.
224
225config FIT_SIGNATURE
226 bool "Enable signature verification of FIT uImages"
227 depends on DM
228 select RSA
229 help
230 This option enables signature verification of FIT uImages,
231 using a hash signed and verified using RSA. If
232 CONFIG_SHA_PROG_HW_ACCEL is defined, i.e support for progressive
233 hashing is available using hardware, then the RSA library will use
234 it. See doc/uImage.FIT/signature.txt for more details.
235
236 WARNING: When relying on signed FIT images with a required signature
237 check the legacy image format is disabled by default, so that
238 unsigned images cannot be loaded. If a board needs the legacy image
239 format support in this case, enable it using
240 CONFIG_IMAGE_FORMAT_LEGACY.
241
242config FIT_VERBOSE
243 bool "Show verbose messages when FIT images fail"
244 help
245 Generally a system will have valid FIT images so debug messages
246 are a waste of code space. If you are debugging your images then
247 you can enable this option to get more verbose information about
248 failures.
249
250config FIT_BEST_MATCH
251 bool "Select the best match for the kernel device tree"
252 help
253 When no configuration is explicitly selected, default to the
254 one whose fdt's compatibility field best matches that of
255 U-Boot itself. A match is considered "best" if it matches the
256 most specific compatibility entry of U-Boot's fdt's root node.
257 The order of entries in the configuration's fdt is ignored.
258
259config FIT_IMAGE_POST_PROCESS
260 bool "Enable post-processing of FIT artifacts after loading by U-Boot"
261 depends on TI_SECURE_DEVICE
262 help
263 Allows doing any sort of manipulation to blobs after they got extracted
264 from FIT images like stripping off headers or modifying the size of the
265 blob, verification, authentication, decryption etc. in a platform or
266 board specific way. In order to use this feature a platform or board-
267 specific implementation of board_fit_image_post_process() must be
268 provided. Also, anything done during this post-processing step would
269 need to be comprehended in how the images were prepared before being
270 injected into the FIT creation (i.e. the blobs would have been pre-
271 processed before being added to the FIT image).
272
273if SPL
274
275config SPL_FIT
276 bool "Support Flattened Image Tree within SPL"
277 depends on SPL
278 select SPL_OF_LIBFDT
279
280config SPL_FIT_SIGNATURE
281 bool "Enable signature verification of FIT firmware within SPL"
282 depends on SPL_DM
283 select SPL_FIT
284 select SPL_RSA
285
286config SPL_LOAD_FIT
287 bool "Enable SPL loading U-Boot as a FIT"
288 select SPL_FIT
289 help
290 Normally with the SPL framework a legacy image is generated as part
291 of the build. This contains U-Boot along with information as to
292 where it should be loaded. This option instead enables generation
293 of a FIT (Flat Image Tree) which provides more flexibility. In
294 particular it can handle selecting from multiple device tree
295 and passing the correct one to U-Boot.
296
297config SPL_FIT_IMAGE_POST_PROCESS
298 bool "Enable post-processing of FIT artifacts after loading by the SPL"
299 depends on SPL_LOAD_FIT
300 help
301 Allows doing any sort of manipulation to blobs after they got extracted
302 from the U-Boot FIT image like stripping off headers or modifying the
303 size of the blob, verification, authentication, decryption etc. in a
304 platform or board specific way. In order to use this feature a platform
305 or board-specific implementation of board_fit_image_post_process() must
306 be provided. Also, anything done during this post-processing step would
307 need to be comprehended in how the images were prepared before being
308 injected into the FIT creation (i.e. the blobs would have been pre-
309 processed before being added to the FIT image).
310
311config SPL_FIT_SOURCE
312 string ".its source file for U-Boot FIT image"
313 depends on SPL_FIT
314 help
315 Specifies a (platform specific) FIT source file to generate the
316 U-Boot FIT image. This could specify further image to load and/or
317 execute.
318
319config SPL_FIT_GENERATOR
320 string ".its file generator script for U-Boot FIT image"
321 depends on SPL_FIT
322 default "board/sunxi/mksunxi_fit_atf.sh" if SPL_LOAD_FIT && ARCH_SUNXI
323 help
324 Specifies a (platform specific) script file to generate the FIT
325 source file used to build the U-Boot FIT image file. This gets
326 passed a list of supported device tree file stub names to
327 include in the generated image.
328
329endif
330
331endif
332
333config OF_BOARD_SETUP
334 bool "Set up board-specific details in device tree before boot"
335 depends on OF_LIBFDT
336 help
337 This causes U-Boot to call ft_board_setup() before booting into
338 the Operating System. This function can set up various
339 board-specific information in the device tree for use by the OS.
340 The device tree is then passed to the OS.
341
342config OF_SYSTEM_SETUP
343 bool "Set up system-specific details in device tree before boot"
344 depends on OF_LIBFDT
345 help
346 This causes U-Boot to call ft_system_setup() before booting into
347 the Operating System. This function can set up various
348 system-specific information in the device tree for use by the OS.
349 The device tree is then passed to the OS.
350
351config OF_STDOUT_VIA_ALIAS
352 bool "Update the device-tree stdout alias from U-Boot"
353 depends on OF_LIBFDT
354 help
355 This uses U-Boot's serial alias from the aliases node to update
356 the device tree passed to the OS. The "linux,stdout-path" property
357 in the chosen node is set to point to the correct serial node.
358 This option currently references CONFIG_CONS_INDEX, which is
359 incorrect when used with device tree as this option does not
360 exist / should not be used.
361
362config SYS_EXTRA_OPTIONS
363 string "Extra Options (DEPRECATED)"
364 help
365 The old configuration infrastructure (= mkconfig + boards.cfg)
366 provided the extra options field. If you have something like
367 "HAS_BAR,BAZ=64", the optional options
368 #define CONFIG_HAS
369 #define CONFIG_BAZ 64
370 will be defined in include/config.h.
371 This option was prepared for the smooth migration from the old
372 configuration to Kconfig. Since this option will be removed sometime,
373 new boards should not use this option.
374
375config SYS_TEXT_BASE
376 depends on ARC || X86 || ARCH_UNIPHIER || ARCH_ZYNQMP || \
377 (M68K && !TARGET_ASTRO_MCF5373L) || MICROBLAZE || MIPS || \
378 ARCH_ZYNQ || ARCH_KEYSTONE || ARCH_OMAP2PLUS
379 depends on !EFI_APP
380 hex "Text Base"
381 help
382 TODO: Move CONFIG_SYS_TEXT_BASE for all the architecture
383
384 default 0x80800000 if ARCH_OMAP2PLUS
385
386
387config SYS_CLK_FREQ
388 depends on ARC || ARCH_SUNXI
389 int "CPU clock frequency"
390 help
391 TODO: Move CONFIG_SYS_CLK_FREQ for all the architecture
392
393config ARCH_FIXUP_FDT_MEMORY
394 bool "Enable arch_fixup_memory_banks() call"
395 default y
396 help
397 Enable FDT memory map syncup before OS boot. This feature can be
398 used for booting OS with different memory setup where the part of
399 the memory location should be used for different purpose.
400
401endmenu
402
403source "api/Kconfig"
404
405source "common/Kconfig"
406
407source "cmd/Kconfig"
408
409source "disk/Kconfig"
410
411source "dts/Kconfig"
412
413source "env/Kconfig"
414
415source "net/Kconfig"
416
417source "drivers/Kconfig"
418
419source "fs/Kconfig"
420
421source "lib/Kconfig"
422
423source "test/Kconfig"
424
