Kconfig 13.4 KB
Newer Older
1 2
#
# For a description of the syntax of this configuration file,
3 4
# see the file Documentation/kbuild/kconfig-language.txt in the
# Linux kernel source tree.
5 6 7 8 9 10 11
#
mainmenu "U-Boot $UBOOTVERSION Configuration"

config UBOOTVERSION
	string
	option env="UBOOTVERSION"

12 13 14
# Allow defaults in arch-specific code to override any given here
source "arch/Kconfig"

15 16
menu "General setup"

17 18 19 20
config LOCALVERSION
	string "Local version - append to U-Boot release"
	help
	  Append an extra string to the end of your U-Boot version.
21
	  This will show up in your boot log, for example.
22 23 24 25 26 27 28 29 30 31
	  The string you set here will be appended after the contents of
	  any files with a filename matching localversion* in your
	  object and source tree, in that order.  Your total string can
	  be a maximum of 64 characters.

config LOCALVERSION_AUTO
	bool "Automatically append version information to the version string"
	default y
	help
	  This will try to automatically determine if the current tree is a
32
	  release tree by looking for Git tags that belong to the current
33 34 35
	  top of tree revision.

	  A string of the format -gxxxxxxxx will be added to the localversion
36
	  if a Git-based tree is found.  The string generated by this will be
37 38 39 40 41 42 43 44 45 46
	  appended after any matching localversion* files, and after the value
	  set in CONFIG_LOCALVERSION.

	  (The actual string used here is the first eight characters produced
	  by running the command:

	    $ git rev-parse --verify HEAD

	  which is done within the script "scripts/setlocalversion".)

47 48 49 50 51 52 53 54 55
config CC_OPTIMIZE_FOR_SIZE
	bool "Optimize for size"
	default y
	help
	  Enabling this option will pass "-Os" instead of "-O2" to gcc
	  resulting in a smaller U-Boot image.

	  This option is enabled by default for U-Boot.

56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72
config DISTRO_DEFAULTS
	bool "Select defaults suitable for booting general purpose Linux distributions"
	default y if ARCH_SUNXI
	default n
	select CMD_BOOTZ
	select CMD_DHCP
	select CMD_EXT2
	select CMD_EXT4
	select CMD_FAT
	select CMD_FS_GENERIC
	select CMD_MII
	select CMD_PING
	select HUSH_PARSER
	help
	  Select this to enable various options and commands which are suitable
	  for building u-boot for booting general purpose Linux distributions.

73 74
config SYS_MALLOC_F
	bool "Enable malloc() pool before relocation"
75
	default y if DM
76
	help
77
	  Before relocation, memory is very limited on many platforms. Still,
78 79 80 81 82 83 84 85 86
	  we can provide a small malloc() pool if needed. Driver model in
	  particular needs this to operate, so that it can allocate the
	  initial serial device and any others that are needed.

config SYS_MALLOC_F_LEN
	hex "Size of malloc() pool before relocation"
	depends on SYS_MALLOC_F
	default 0x400
	help
87
	  Before relocation, memory is very limited on many platforms. Still,
88 89 90 91
	  we can provide a small malloc() pool if needed. Driver model in
	  particular needs this to operate, so that it can allocate the
	  initial serial device and any others that are needed.

Tom Rini's avatar
Tom Rini committed
92
menuconfig EXPERT
93 94 95 96 97 98
	bool "Configure standard U-Boot features (expert users)"
	default y
	help
	  This option allows certain base U-Boot options and settings
	  to be disabled or tweaked. This is for specialized
	  environments which can tolerate a "non-standard" U-Boot.
99
	  Use this only if you really know what you are doing.
100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115

if EXPERT
	config SYS_MALLOC_CLEAR_ON_INIT
	bool "Init with zeros the memory reserved for malloc (slow)"
	default y
	help
	  This setting is enabled by default. The reserved malloc
	  memory is initialized with zeros, so first malloc calls
	  will return the pointer to the zeroed memory. But this
	  slows the boot time.

	  It is recommended to disable it, when CONFIG_SYS_MALLOC_LEN
	  value, has more than few MiB, e.g. when uses bzip2 or bmp logo.
	  Then the boot time can be significantly reduced.
	  Warning:
	  When disabling this, please check if malloc calls, maybe
116
	  should be replaced by calloc - if one expects zeroed memory.
117 118 119 120 121 122 123 124 125

config TOOLS_DEBUG
	bool "Enable debug information for tools"
	help
	  Enable generation of debug information for tools such as mkimage.
	  This can be used for debugging purposes. With debug information
	  it is possible to set breakpoints on particular lines, single-step
	  debug through the source code, etc.

126
endif
127 128 129 130 131 132 133 134

config PHYS_64BIT
	bool "64bit physical address support"
	help
	  Say Y here to support 64bit physical memory address.
	  This can be used not only for 64bit SoCs, but also for
	  large physical address extention on 32bit SoCs.

135 136
endmenu		# General setup

137 138
menu "Boot images"

139 140 141
config SUPPORT_SPL
	bool

142 143 144
config SUPPORT_TPL
	bool

145 146
config SPL
	bool
147
	depends on SUPPORT_SPL
148
	prompt "Enable SPL"
149 150 151
	help
	  If you want to build SPL as well as the normal image, say Y.

152 153 154
config SPL_SYS_MALLOC_SIMPLE
	bool
	depends on SPL
155
	prompt "Only use malloc_simple functions in the SPL"
156 157
	help
	  Say Y here to only use the *_simple malloc functions from
158
	  malloc_simple.c, rather then using the versions from dlmalloc.c;
159 160 161
	  this will make the SPL binary smaller at the cost of more heap
	  usage as the *_simple malloc functions do not re-use free-ed mem.

162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179
config SPL_STACK_R
	depends on SPL
	bool "Enable SDRAM location for SPL stack"
	help
	  SPL starts off execution in SRAM and thus typically has only a small
	  stack available. Since SPL sets up DRAM while in its board_init_f()
	  function, it is possible for the stack to move there before
	  board_init_r() is reached. This option enables a special SDRAM
	  location for the SPL stack. U-Boot SPL switches to this after
	  board_init_f() completes, and before board_init_r() starts.

config SPL_STACK_R_ADDR
	depends on SPL_STACK_R
	hex "SDRAM location for SPL stack"
	help
	  Specify the address in SDRAM for the SPL stack. This will be set up
	  before board_init_r() is called.

180 181 182 183 184 185 186 187 188 189
config SPL_STACK_R_MALLOC_SIMPLE_LEN
	depends on SPL_STACK_R && SPL_SYS_MALLOC_SIMPLE
	hex "Size of malloc_simple heap after switching to DRAM SPL stack"
	default 0x100000
	help
	  Specify the amount of the stack to use as memory pool for
	  malloc_simple after switching the stack to DRAM. This may be set
	  to give board_init_r() a larger heap then the initial heap in
	  SRAM which is limited to SYS_MALLOC_F_LEN bytes.

190 191 192 193 194 195 196 197 198 199
config SPL_SEPARATE_BSS
	depends on SPL
	bool "BSS section is in a different memory region from text"
	help
	  Some platforms need a large BSS region in SPL and can provide this
	  because RAM is already set up. In this case BSS can be moved to RAM.
	  This option should then be enabled so that the correct device tree
	  location is used. Normally we put the device tree at the end of BSS
	  but with this option enabled, it goes at _image_binary_end.

200 201
config TPL
	bool
202
	depends on SPL && SUPPORT_TPL
203
	prompt "Enable TPL"
204 205 206
	help
	  If you want to build TPL as well as the normal image and SPL, say Y.

207 208 209 210 211 212 213
config FIT
	bool "Support Flattened Image Tree"
	help
	  This option allows to boot the new uImage structrure,
	  Flattened Image Tree.  FIT is formally a FDT, which can include
	  images of various types (kernel, FDT blob, ramdisk, etc.)
	  in a single blob.  To boot this new uImage structure,
214
	  pass the address of the blob to the "bootm" command.
215 216 217 218
	  FIT is very flexible, supporting compression, multiple images,
	  multiple configurations, verification through hashing and also
	  verified boot (secure boot using RSA). This option enables that
	  feature.
219

220 221 222 223 224
config SPL_FIT
	bool "Support Flattened Image Tree within SPL"
	depends on FIT
	depends on SPL

225 226 227 228 229
config FIT_VERBOSE
	bool "Display verbose messages on FIT boot"
	depends on FIT

config FIT_SIGNATURE
230
	bool "Enable signature verification of FIT uImages"
231
	depends on FIT
Chris Kuethe's avatar
Chris Kuethe committed
232
	depends on DM
233
	select RSA
234 235
	help
	  This option enables signature verification of FIT uImages,
236 237
	  using a hash signed and verified using RSA. If
	  CONFIG_SHA_PROG_HW_ACCEL is defined, i.e support for progressive
238 239 240 241 242 243 244 245 246
	  hashing is available using hardware, then then RSA library will use
	  it. See doc/uImage.FIT/signature.txt for more details.

	  WARNING: When relying on signed FIT images with a required signature
	  check the legacy image format is disabled by default, so that
	  unsigned images cannot be loaded. If a board needs the legacy image
	  format support in this case, enable it using
	  CONFIG_IMAGE_FORMAT_LEGACY.

247 248 249 250 251 252
config SPL_FIT_SIGNATURE
	bool "Enable signature verification of FIT firmware within SPL"
	depends on SPL_FIT
	depends on SPL_DM
	select SPL_RSA

253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299
config FIT_BEST_MATCH
	bool "Select the best match for the kernel device tree"
	depends on FIT
	help
	  When no configuration is explicitly selected, default to the
	  one whose fdt's compatibility field best matches that of
	  U-Boot itself. A match is considered "best" if it matches the
	  most specific compatibility entry of U-Boot's fdt's root node.
	  The order of entries in the configuration's fdt is ignored.

config FIT_VERBOSE
	bool "Show verbose messages when FIT images fails"
	depends on FIT
	help
	  Generally a system will have valid FIT images so debug messages
	  are a waste of code space. If you are debugging your images then
	  you can enable this option to get more verbose information about
	  failures.

config OF_BOARD_SETUP
	bool "Set up board-specific details in device tree before boot"
	depends on OF_LIBFDT
	help
	  This causes U-Boot to call ft_board_setup() before booting into
	  the Operating System. This function can set up various
	  board-specific information in the device tree for use by the OS.
	  The device tree is then passed to the OS.

config OF_SYSTEM_SETUP
	bool "Set up system-specific details in device tree before boot"
	depends on OF_LIBFDT
	help
	  This causes U-Boot to call ft_system_setup() before booting into
	  the Operating System. This function can set up various
	  system-specific information in the device tree for use by the OS.
	  The device tree is then passed to the OS.

config OF_STDOUT_VIA_ALIAS
	bool "Update the device-tree stdout alias from U-Boot"
	depends on OF_LIBFDT
	help
	  This uses U-Boot's serial alias from the aliases node to update
	  the device tree passed to the OS. The "linux,stdout-path" property
	  in the chosen node is set to point to the correct serial node.
	  This option currently references CONFIG_CONS_INDEX, which is
	  incorrect when used with device tree as this option does not
	  exist / should not be used.
300

301 302 303 304
config SYS_EXTRA_OPTIONS
	string "Extra Options (DEPRECATED)"
	help
	  The old configuration infrastructure (= mkconfig + boards.cfg)
305
	  provided the extra options field. If you have something like
306 307 308 309 310 311 312 313
	  "HAS_BAR,BAZ=64", the optional options
	    #define CONFIG_HAS
	    #define CONFIG_BAZ	64
	  will be defined in include/config.h.
	  This option was prepared for the smooth migration from the old
	  configuration to Kconfig. Since this option will be removed sometime,
	  new boards should not use this option.

314
config SYS_TEXT_BASE
315
	depends on SPARC || ARC || X86 || ARCH_UNIPHIER || ARCH_ZYNQMP || \
316
		(M68K && !TARGET_ASTRO_MCF5373L) || MICROBLAZE || MIPS
317
	depends on !EFI_APP
318 319 320 321
	hex "Text Base"
	help
	  TODO: Move CONFIG_SYS_TEXT_BASE for all the architecture

322 323 324 325 326 327 328 329 330 331 332
config SPL_LOAD_FIT
	bool "Enable SPL loading U-Boot as a FIT"
	depends on FIT
	help
	  Normally with the SPL framework a legacy image is generated as part
	  of the build. This contains U-Boot along with information as to
	  where it should be loaded. This option instead enables generation
	  of a FIT (Flat Image Tree) which provides more flexibility. In
	  particular it can handle selecting from multiple device tree
	  and passing the correct one to U-Boot.

333 334 335 336 337 338 339 340 341 342 343 344 345 346
config SPL_FIT_IMAGE_POST_PROCESS
	bool "Enable post-processing of FIT artifacts after loading by the SPL"
	depends on SPL_LOAD_FIT && TI_SECURE_DEVICE
	help
	  Allows doing any sort of manipulation to blobs after they got extracted
	  from the U-Boot FIT image like stripping off headers or modifying the
	  size of the blob, verification, authentication, decryption etc. in a
	  platform or board specific way. In order to use this feature a platform
	  or board-specific implementation of board_fit_image_post_process() must
	  be provided. Also, anything done during this post-processing step would
	  need to be comprehended in how the images were prepared before being
	  injected into the FIT creation (i.e. the blobs would have been pre-
	  processed before being added to the FIT image).

347 348 349 350 351 352 353 354 355 356 357 358 359 360
config FIT_IMAGE_POST_PROCESS
	bool "Enable post-processing of FIT artifacts after loading by U-Boot"
	depends on FIT && TI_SECURE_DEVICE
	help
	  Allows doing any sort of manipulation to blobs after they got extracted
	  from FIT images like stripping off headers or modifying the size of the
	  blob, verification, authentication, decryption etc. in a platform or
	  board specific way. In order to use this feature a platform or board-
	  specific implementation of board_fit_image_post_process() must be
	  provided. Also, anything done during this post-processing step would
	  need to be comprehended in how the images were prepared before being
	  injected into the FIT creation (i.e. the blobs would have been pre-
	  processed before being added to the FIT image).

361
config SYS_CLK_FREQ
362
	depends on ARC || ARCH_SUNXI
363 364 365 366
	int "CPU clock frequency"
	help
	  TODO: Move CONFIG_SYS_CLK_FREQ for all the architecture

367 368 369 370 371 372 373 374 375
config ARCH_FIXUP_FDT
	bool "Enable arch_fixup_fdt() call"
	depends on ARM || MIPS
	default y
	help
	  Enable FDT memory map syncup before OS boot. This feature can be
	  used for booting OS with different memory setup where the part of
	  the memory location should be used for different purpose.

376
endmenu		# Boot images
377

378 379
source "common/Kconfig"

380 381
source "cmd/Kconfig"

382 383
source "dts/Kconfig"

384 385 386 387 388 389 390
source "net/Kconfig"

source "drivers/Kconfig"

source "fs/Kconfig"

source "lib/Kconfig"
Simon Glass's avatar
Simon Glass committed
391 392

source "test/Kconfig"