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1 | # | |
2 | # For a description of the syntax of this configuration file, | |
3 | # see the file Documentation/kbuild/kconfig-language.txt in the | |
4 | # Linux kernel source tree. | |
5 | # | |
6 | mainmenu "U-Boot $UBOOTVERSION Configuration" | |
7 | ||
8 | config UBOOTVERSION | |
9 | string | |
10 | option env="UBOOTVERSION" | |
11 | ||
12 | # Allow defaults in arch-specific code to override any given here | |
13 | source "arch/Kconfig" | |
14 | ||
15 | menu "General setup" | |
16 | ||
17 | config BROKEN | |
18 | bool | |
19 | help | |
20 | This option cannot be enabled. It is used as dependency | |
21 | for broken and incomplete features. | |
22 | ||
23 | config 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 | ||
33 | config 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 | ||
53 | config 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 | ||
62 | config 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 if PARTITIONS | |
81 | select HUSH_PARSER | |
82 | select BOOTP_BOOTPATH if NET | |
83 | select BOOTP_DNS if NET | |
84 | select BOOTP_GATEWAY if NET | |
85 | select BOOTP_HOSTNAME if NET | |
86 | select BOOTP_PXE if NET | |
87 | select BOOTP_SUBNETMASK if NET | |
88 | select CMDLINE_EDITING | |
89 | select AUTO_COMPLETE | |
90 | select SYS_LONGHELP | |
91 | select SUPPORT_RAW_INITRD | |
92 | select ENV_VARS_UBOOT_CONFIG | |
93 | help | |
94 | Select this to enable various options and commands which are suitable | |
95 | for building u-boot for booting general purpose Linux distributions. | |
96 | ||
97 | config ENV_VARS_UBOOT_CONFIG | |
98 | bool "Add arch, board, vendor and soc variables to default environment" | |
99 | help | |
100 | Define this in order to add variables describing the | |
101 | U-Boot build configuration to the default environment. | |
102 | These will be named arch, cpu, board, vendor, and soc. | |
103 | Enabling this option will cause the following to be defined: | |
104 | - CONFIG_SYS_ARCH | |
105 | - CONFIG_SYS_CPU | |
106 | - CONFIG_SYS_BOARD | |
107 | - CONFIG_SYS_VENDOR | |
108 | - CONFIG_SYS_SOC | |
109 | ||
110 | config SYS_BOOT_GET_CMDLINE | |
111 | bool "Enable kernel command line setup" | |
112 | help | |
113 | Enables allocating and saving kernel cmdline in space between | |
114 | "bootm_low" and "bootm_low" + BOOTMAPSZ. | |
115 | ||
116 | config SYS_BOOT_GET_KBD | |
117 | bool "Enable kernel board information setup" | |
118 | help | |
119 | Enables allocating and saving a kernel copy of the bd_info in | |
120 | space between "bootm_low" and "bootm_low" + BOOTMAPSZ. | |
121 | ||
122 | config SYS_MALLOC_F | |
123 | bool "Enable malloc() pool before relocation" | |
124 | default y if DM | |
125 | help | |
126 | Before relocation, memory is very limited on many platforms. Still, | |
127 | we can provide a small malloc() pool if needed. Driver model in | |
128 | particular needs this to operate, so that it can allocate the | |
129 | initial serial device and any others that are needed. | |
130 | ||
131 | config SYS_MALLOC_F_LEN | |
132 | hex "Size of malloc() pool before relocation" | |
133 | depends on SYS_MALLOC_F | |
134 | default 0x400 | |
135 | help | |
136 | Before relocation, memory is very limited on many platforms. Still, | |
137 | we can provide a small malloc() pool if needed. Driver model in | |
138 | particular needs this to operate, so that it can allocate the | |
139 | initial serial device and any others that are needed. | |
140 | ||
141 | config SPL_SYS_MALLOC_F_LEN | |
142 | hex "Size of malloc() pool in SPL before relocation" | |
143 | depends on SYS_MALLOC_F | |
144 | default SYS_MALLOC_F_LEN | |
145 | help | |
146 | Before relocation, memory is very limited on many platforms. Still, | |
147 | we can provide a small malloc() pool if needed. Driver model in | |
148 | particular needs this to operate, so that it can allocate the | |
149 | initial serial device and any others that are needed. | |
150 | ||
151 | config TPL_SYS_MALLOC_F_LEN | |
152 | hex "Size of malloc() pool in TPL before relocation" | |
153 | depends on SYS_MALLOC_F | |
154 | default SYS_MALLOC_F_LEN | |
155 | help | |
156 | Before relocation, memory is very limited on many platforms. Still, | |
157 | we can provide a small malloc() pool if needed. Driver model in | |
158 | particular needs this to operate, so that it can allocate the | |
159 | initial serial device and any others that are needed. | |
160 | ||
161 | menuconfig EXPERT | |
162 | bool "Configure standard U-Boot features (expert users)" | |
163 | default y | |
164 | help | |
165 | This option allows certain base U-Boot options and settings | |
166 | to be disabled or tweaked. This is for specialized | |
167 | environments which can tolerate a "non-standard" U-Boot. | |
168 | Use this only if you really know what you are doing. | |
169 | ||
170 | if EXPERT | |
171 | config SYS_MALLOC_CLEAR_ON_INIT | |
172 | bool "Init with zeros the memory reserved for malloc (slow)" | |
173 | default y | |
174 | help | |
175 | This setting is enabled by default. The reserved malloc | |
176 | memory is initialized with zeros, so first malloc calls | |
177 | will return the pointer to the zeroed memory. But this | |
178 | slows the boot time. | |
179 | ||
180 | It is recommended to disable it, when CONFIG_SYS_MALLOC_LEN | |
181 | value, has more than few MiB, e.g. when uses bzip2 or bmp logo. | |
182 | Then the boot time can be significantly reduced. | |
183 | Warning: | |
184 | When disabling this, please check if malloc calls, maybe | |
185 | should be replaced by calloc - if one expects zeroed memory. | |
186 | ||
187 | config TOOLS_DEBUG | |
188 | bool "Enable debug information for tools" | |
189 | help | |
190 | Enable generation of debug information for tools such as mkimage. | |
191 | This can be used for debugging purposes. With debug information | |
192 | it is possible to set breakpoints on particular lines, single-step | |
193 | debug through the source code, etc. | |
194 | ||
195 | endif # EXPERT | |
196 | ||
197 | config PHYS_64BIT | |
198 | bool "64bit physical address support" | |
199 | help | |
200 | Say Y here to support 64bit physical memory address. | |
201 | This can be used not only for 64bit SoCs, but also for | |
202 | large physical address extention on 32bit SoCs. | |
203 | ||
204 | config BUILD_ROM | |
205 | bool "Build U-Boot as BIOS replacement" | |
206 | depends on X86 | |
207 | help | |
208 | This option allows to build a ROM version of U-Boot. | |
209 | The build process generally requires several binary blobs | |
210 | which are not shipped in the U-Boot source tree. | |
211 | Please, see doc/README.x86 for details. | |
212 | ||
213 | endmenu # General setup | |
214 | ||
215 | menu "Boot images" | |
216 | ||
217 | config ANDROID_BOOT_IMAGE | |
218 | bool "Enable support for Android Boot Images" | |
219 | default y if FASTBOOT | |
220 | help | |
221 | This enables support for booting images which use the Android | |
222 | image format header. | |
223 | ||
224 | config FIT | |
225 | bool "Support Flattened Image Tree" | |
226 | select MD5 | |
227 | select SHA1 | |
228 | help | |
229 | This option allows you to boot the new uImage structure, | |
230 | Flattened Image Tree. FIT is formally a FDT, which can include | |
231 | images of various types (kernel, FDT blob, ramdisk, etc.) | |
232 | in a single blob. To boot this new uImage structure, | |
233 | pass the address of the blob to the "bootm" command. | |
234 | FIT is very flexible, supporting compression, multiple images, | |
235 | multiple configurations, verification through hashing and also | |
236 | verified boot (secure boot using RSA). | |
237 | ||
238 | if FIT | |
239 | ||
240 | config FIT_ENABLE_SHA256_SUPPORT | |
241 | bool "Support SHA256 checksum of FIT image contents" | |
242 | select SHA256 | |
243 | default y | |
244 | help | |
245 | Enable this to support SHA256 checksum of FIT image contents. A | |
246 | SHA256 checksum is a 256-bit (32-byte) hash value used to check that | |
247 | the image contents have not been corrupted. SHA256 is recommended | |
248 | for use in secure applications since (as at 2016) there is no known | |
249 | feasible attack that could produce a 'collision' with differing | |
250 | input data. Use this for the highest security. Note that only the | |
251 | SHA256 variant is supported: SHA512 and others are not currently | |
252 | supported in U-Boot. | |
253 | ||
254 | config FIT_SIGNATURE | |
255 | bool "Enable signature verification of FIT uImages" | |
256 | depends on DM | |
257 | select RSA | |
258 | help | |
259 | This option enables signature verification of FIT uImages, | |
260 | using a hash signed and verified using RSA. If | |
261 | CONFIG_SHA_PROG_HW_ACCEL is defined, i.e support for progressive | |
262 | hashing is available using hardware, then the RSA library will use | |
263 | it. See doc/uImage.FIT/signature.txt for more details. | |
264 | ||
265 | WARNING: When relying on signed FIT images with a required signature | |
266 | check the legacy image format is disabled by default, so that | |
267 | unsigned images cannot be loaded. If a board needs the legacy image | |
268 | format support in this case, enable it using | |
269 | CONFIG_IMAGE_FORMAT_LEGACY. | |
270 | ||
271 | config FIT_VERBOSE | |
272 | bool "Show verbose messages when FIT images fail" | |
273 | help | |
274 | Generally a system will have valid FIT images so debug messages | |
275 | are a waste of code space. If you are debugging your images then | |
276 | you can enable this option to get more verbose information about | |
277 | failures. | |
278 | ||
279 | config FIT_BEST_MATCH | |
280 | bool "Select the best match for the kernel device tree" | |
281 | help | |
282 | When no configuration is explicitly selected, default to the | |
283 | one whose fdt's compatibility field best matches that of | |
284 | U-Boot itself. A match is considered "best" if it matches the | |
285 | most specific compatibility entry of U-Boot's fdt's root node. | |
286 | The order of entries in the configuration's fdt is ignored. | |
287 | ||
288 | config FIT_IMAGE_POST_PROCESS | |
289 | bool "Enable post-processing of FIT artifacts after loading by U-Boot" | |
290 | depends on TI_SECURE_DEVICE | |
291 | help | |
292 | Allows doing any sort of manipulation to blobs after they got extracted | |
293 | from FIT images like stripping off headers or modifying the size of the | |
294 | blob, verification, authentication, decryption etc. in a platform or | |
295 | board specific way. In order to use this feature a platform or board- | |
296 | specific implementation of board_fit_image_post_process() must be | |
297 | provided. Also, anything done during this post-processing step would | |
298 | need to be comprehended in how the images were prepared before being | |
299 | injected into the FIT creation (i.e. the blobs would have been pre- | |
300 | processed before being added to the FIT image). | |
301 | ||
302 | if SPL | |
303 | ||
304 | config SPL_FIT | |
305 | bool "Support Flattened Image Tree within SPL" | |
306 | depends on SPL | |
307 | select SPL_OF_LIBFDT | |
308 | ||
309 | config SPL_FIT_SIGNATURE | |
310 | bool "Enable signature verification of FIT firmware within SPL" | |
311 | depends on SPL_DM | |
312 | select SPL_FIT | |
313 | select SPL_RSA | |
314 | ||
315 | config SPL_LOAD_FIT | |
316 | bool "Enable SPL loading U-Boot as a FIT" | |
317 | select SPL_FIT | |
318 | help | |
319 | Normally with the SPL framework a legacy image is generated as part | |
320 | of the build. This contains U-Boot along with information as to | |
321 | where it should be loaded. This option instead enables generation | |
322 | of a FIT (Flat Image Tree) which provides more flexibility. In | |
323 | particular it can handle selecting from multiple device tree | |
324 | and passing the correct one to U-Boot. | |
325 | ||
326 | config SPL_FIT_IMAGE_POST_PROCESS | |
327 | bool "Enable post-processing of FIT artifacts after loading by the SPL" | |
328 | depends on SPL_LOAD_FIT | |
329 | help | |
330 | Allows doing any sort of manipulation to blobs after they got extracted | |
331 | from the U-Boot FIT image like stripping off headers or modifying the | |
332 | size of the blob, verification, authentication, decryption etc. in a | |
333 | platform or board specific way. In order to use this feature a platform | |
334 | or board-specific implementation of board_fit_image_post_process() must | |
335 | be provided. Also, anything done during this post-processing step would | |
336 | need to be comprehended in how the images were prepared before being | |
337 | injected into the FIT creation (i.e. the blobs would have been pre- | |
338 | processed before being added to the FIT image). | |
339 | ||
340 | config SPL_FIT_SOURCE | |
341 | string ".its source file for U-Boot FIT image" | |
342 | depends on SPL_FIT | |
343 | help | |
344 | Specifies a (platform specific) FIT source file to generate the | |
345 | U-Boot FIT image. This could specify further image to load and/or | |
346 | execute. | |
347 | ||
348 | config SPL_FIT_GENERATOR | |
349 | string ".its file generator script for U-Boot FIT image" | |
350 | depends on SPL_FIT | |
351 | default "board/sunxi/mksunxi_fit_atf.sh" if SPL_LOAD_FIT && ARCH_SUNXI | |
352 | help | |
353 | Specifies a (platform specific) script file to generate the FIT | |
354 | source file used to build the U-Boot FIT image file. This gets | |
355 | passed a list of supported device tree file stub names to | |
356 | include in the generated image. | |
357 | ||
358 | endif # SPL | |
359 | ||
360 | endif # FIT | |
361 | ||
362 | config OF_BOARD_SETUP | |
363 | bool "Set up board-specific details in device tree before boot" | |
364 | depends on OF_LIBFDT | |
365 | help | |
366 | This causes U-Boot to call ft_board_setup() before booting into | |
367 | the Operating System. This function can set up various | |
368 | board-specific information in the device tree for use by the OS. | |
369 | The device tree is then passed to the OS. | |
370 | ||
371 | config OF_SYSTEM_SETUP | |
372 | bool "Set up system-specific details in device tree before boot" | |
373 | depends on OF_LIBFDT | |
374 | help | |
375 | This causes U-Boot to call ft_system_setup() before booting into | |
376 | the Operating System. This function can set up various | |
377 | system-specific information in the device tree for use by the OS. | |
378 | The device tree is then passed to the OS. | |
379 | ||
380 | config OF_STDOUT_VIA_ALIAS | |
381 | bool "Update the device-tree stdout alias from U-Boot" | |
382 | depends on OF_LIBFDT | |
383 | help | |
384 | This uses U-Boot's serial alias from the aliases node to update | |
385 | the device tree passed to the OS. The "linux,stdout-path" property | |
386 | in the chosen node is set to point to the correct serial node. | |
387 | This option currently references CONFIG_CONS_INDEX, which is | |
388 | incorrect when used with device tree as this option does not | |
389 | exist / should not be used. | |
390 | ||
391 | config SYS_EXTRA_OPTIONS | |
392 | string "Extra Options (DEPRECATED)" | |
393 | help | |
394 | The old configuration infrastructure (= mkconfig + boards.cfg) | |
395 | provided the extra options field. If you have something like | |
396 | "HAS_BAR,BAZ=64", the optional options | |
397 | #define CONFIG_HAS | |
398 | #define CONFIG_BAZ 64 | |
399 | will be defined in include/config.h. | |
400 | This option was prepared for the smooth migration from the old | |
401 | configuration to Kconfig. Since this option will be removed sometime, | |
402 | new boards should not use this option. | |
403 | ||
404 | config SYS_TEXT_BASE | |
405 | depends on !NIOS2 && !XTENSA | |
406 | depends on !EFI_APP | |
407 | default 0x80800000 if ARCH_OMAP2PLUS | |
408 | hex "Text Base" | |
409 | help | |
410 | The address in memory that U-Boot will be running from, initially. | |
411 | ||
412 | ||
413 | ||
414 | config SYS_CLK_FREQ | |
415 | depends on ARC || ARCH_SUNXI | |
416 | int "CPU clock frequency" | |
417 | help | |
418 | TODO: Move CONFIG_SYS_CLK_FREQ for all the architecture | |
419 | ||
420 | config ARCH_FIXUP_FDT_MEMORY | |
421 | bool "Enable arch_fixup_memory_banks() call" | |
422 | default y | |
423 | help | |
424 | Enable FDT memory map syncup before OS boot. This feature can be | |
425 | used for booting OS with different memory setup where the part of | |
426 | the memory location should be used for different purpose. | |
427 | ||
428 | endmenu # Boot images | |
429 | ||
430 | source "api/Kconfig" | |
431 | ||
432 | source "common/Kconfig" | |
433 | ||
434 | source "cmd/Kconfig" | |
435 | ||
436 | source "disk/Kconfig" | |
437 | ||
438 | source "dts/Kconfig" | |
439 | ||
440 | source "env/Kconfig" | |
441 | ||
442 | source "net/Kconfig" | |
443 | ||
444 | source "drivers/Kconfig" | |
445 | ||
446 | source "fs/Kconfig" | |
447 | ||
448 | source "lib/Kconfig" | |
449 | ||
450 | source "test/Kconfig" |