]>
Commit | Line | Data |
---|---|---|
1 | # | |
2 | # For a description of the syntax of this configuration file, | |
3 | # see Documentation/kbuild/kconfig-language.txt. | |
4 | # | |
5 | mainmenu "U-Boot $UBOOTVERSION Configuration" | |
6 | ||
7 | config UBOOTVERSION | |
8 | string | |
9 | option env="UBOOTVERSION" | |
10 | ||
11 | # Allow defaults in arch-specific code to override any given here | |
12 | source "arch/Kconfig" | |
13 | ||
14 | menu "General setup" | |
15 | ||
16 | config LOCALVERSION | |
17 | string "Local version - append to U-Boot release" | |
18 | 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 | ||
26 | config LOCALVERSION_AUTO | |
27 | bool "Automatically append version information to the version string" | |
28 | 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 | ||
46 | config CC_OPTIMIZE_FOR_SIZE | |
47 | bool "Optimize for size" | |
48 | 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 | ||
55 | config SYS_MALLOC_F | |
56 | bool "Enable malloc() pool before relocation" | |
57 | default y if DM | |
58 | 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 | ||
64 | config 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 | ||
74 | menuconfig EXPERT | |
75 | 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. | |
82 | ||
83 | if 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. | |
99 | endif | |
100 | endmenu # General setup | |
101 | ||
102 | menu "Boot images" | |
103 | ||
104 | config SUPPORT_SPL | |
105 | bool | |
106 | ||
107 | config SUPPORT_TPL | |
108 | bool | |
109 | ||
110 | config SPL | |
111 | bool | |
112 | depends on SUPPORT_SPL | |
113 | prompt "Enable SPL" | |
114 | help | |
115 | If you want to build SPL as well as the normal image, say Y. | |
116 | ||
117 | config 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 | ||
127 | config 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 | ||
138 | config 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 | ||
145 | config 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 | ||
155 | config 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 | ||
165 | config TPL | |
166 | bool | |
167 | depends on SPL && SUPPORT_TPL | |
168 | prompt "Enable TPL" | |
169 | help | |
170 | If you want to build TPL as well as the normal image and SPL, say Y. | |
171 | ||
172 | config FIT | |
173 | bool "Support Flattened Image Tree" | |
174 | 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, | |
179 | pass the address of the blob to the "bootm" command. | |
180 | 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. | |
184 | ||
185 | config FIT_VERBOSE | |
186 | bool "Display verbose messages on FIT boot" | |
187 | depends on FIT | |
188 | ||
189 | config FIT_SIGNATURE | |
190 | bool "Enable signature verification of FIT uImages" | |
191 | depends on FIT | |
192 | depends on DM | |
193 | select RSA | |
194 | help | |
195 | This option enables signature verification of FIT uImages, | |
196 | using a hash signed and verified using RSA. If | |
197 | CONFIG_SHA_PROG_HW_ACCEL is defined, i.e support for progressive | |
198 | 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 | ||
207 | config 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 | ||
217 | config 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 | ||
226 | config 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 | ||
235 | config 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 | ||
244 | config 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. | |
254 | ||
255 | config SYS_EXTRA_OPTIONS | |
256 | string "Extra Options (DEPRECATED)" | |
257 | help | |
258 | The old configuration infrastructure (= mkconfig + boards.cfg) | |
259 | provided the extra options field. If you have something like | |
260 | "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 | ||
268 | config SYS_TEXT_BASE | |
269 | depends on SPARC || ARC || X86 || ARCH_UNIPHIER || ARCH_ZYNQMP || \ | |
270 | (M68K && !TARGET_ASTRO_MCF5373L) || MICROBLAZE | |
271 | depends on !EFI_APP | |
272 | hex "Text Base" | |
273 | help | |
274 | TODO: Move CONFIG_SYS_TEXT_BASE for all the architecture | |
275 | ||
276 | config 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 | ||
287 | config SYS_CLK_FREQ | |
288 | depends on ARC || ARCH_SUNXI | |
289 | int "CPU clock frequency" | |
290 | help | |
291 | TODO: Move CONFIG_SYS_CLK_FREQ for all the architecture | |
292 | ||
293 | endmenu # Boot images | |
294 | ||
295 | source "common/Kconfig" | |
296 | ||
297 | source "cmd/Kconfig" | |
298 | ||
299 | source "dts/Kconfig" | |
300 | ||
301 | source "net/Kconfig" | |
302 | ||
303 | source "drivers/Kconfig" | |
304 | ||
305 | source "fs/Kconfig" | |
306 | ||
307 | source "lib/Kconfig" | |
308 | ||
309 | source "test/Kconfig" |