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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 | # General configuration options # Copyright (c) 2014-2015 Wind River Systems, Inc. # Copyright (c) 2016 Intel Corporation # SPDX-License-Identifier: Apache-2.0 menu "Modules" source "$(KCONFIG_BINARY_DIR)/Kconfig.modules" source "modules/Kconfig" endmenu # Include Kconfig.defconfig files first so that they can override defaults and # other symbol/choice properties by adding extra symbol/choice definitions. # After merging all definitions for a symbol/choice, Kconfig picks the first # property (e.g. the first default) with a satisfied condition. # # Shield defaults should have precedence over board defaults, which should have # precedence over SoC defaults, so include them in that order. # # $ARCH and $BOARD_DIR will be glob patterns when building documentation. source "boards/shields/*/Kconfig.defconfig" source "$(BOARD_DIR)/Kconfig.defconfig" source "$(KCONFIG_BINARY_DIR)/Kconfig.soc.defconfig" source "boards/Kconfig" source "soc/Kconfig" source "arch/Kconfig" source "kernel/Kconfig" source "dts/Kconfig" source "drivers/Kconfig" source "lib/Kconfig" source "subsys/Kconfig" osource "$(TOOLCHAIN_KCONFIG_DIR)/Kconfig" menu "Build and Link Features" menu "Linker Options" choice prompt "Linker Orphan Section Handling" default LINKER_ORPHAN_SECTION_WARN config LINKER_ORPHAN_SECTION_PLACE bool "Place" help Linker puts orphan sections in place without warnings or errors. config LINKER_ORPHAN_SECTION_WARN bool "Warn" help Linker places the orphan sections in output and issues warning about those sections. config LINKER_ORPHAN_SECTION_ERROR bool "Error" help Linker exits with error when an orphan section is found. endchoice config CODE_DATA_RELOCATION bool "Relocate code/data sections" depends on ARM help When selected this will relocate .text, data and .bss sections from the specified files and places it in the required memory region. The files should be specified in the CMakeList.txt file with a cmake API zephyr_code_relocate(). config HAS_FLASH_LOAD_OFFSET bool help This option is selected by targets having a FLASH_LOAD_OFFSET and FLASH_LOAD_SIZE. if HAS_FLASH_LOAD_OFFSET config USE_DT_CODE_PARTITION bool "Link application into /chosen/zephyr,code-partition from devicetree" help When enabled, the application will be linked into the flash partition selected by the zephyr,code-partition property in /chosen in devicetree. When this is disabled, the flash load offset and size can be set manually below. # Workaround for not being able to have commas in macro arguments DT_CHOSEN_Z_CODE_PARTITION := zephyr,code-partition config FLASH_LOAD_OFFSET # Only user-configurable when USE_DT_CODE_PARTITION is disabled hex "Kernel load offset" if !USE_DT_CODE_PARTITION default $(dt_chosen_reg_addr_hex,$(DT_CHOSEN_Z_CODE_PARTITION)) if USE_DT_CODE_PARTITION default 0 help This option specifies the byte offset from the beginning of flash that the kernel should be loaded into. Changing this value from zero will affect the Zephyr image's link, and will decrease the total amount of flash available for use by application code. If unsure, leave at the default value 0. config FLASH_LOAD_SIZE # Only user-configurable when USE_DT_CODE_PARTITION is disabled hex "Kernel load size" if !USE_DT_CODE_PARTITION default $(dt_chosen_reg_size_hex,$(DT_CHOSEN_Z_CODE_PARTITION)) if USE_DT_CODE_PARTITION default 0 help If non-zero, this option specifies the size, in bytes, of the flash area that the Zephyr image will be allowed to occupy. If zero, the image will be able to occupy from the FLASH_LOAD_OFFSET to the end of the device. If unsure, leave at the default value 0. endif # HAS_FLASH_LOAD_OFFSET config ROM_START_OFFSET hex prompt "ROM start offset" if !BOOTLOADER_MCUBOOT default 0x200 if BOOTLOADER_MCUBOOT default 0 help If the application is built for chain-loading by a bootloader this variable is required to be set to value that leaves sufficient space between the beginning of the image and the start of the first section to store an image header or any other metadata. In the particular case of the MCUboot bootloader this reserves enough space to store the image header, which should also meet vector table alignment requirements on most ARM targets, although some targets may require smaller or larger values. config HAVE_CUSTOM_LINKER_SCRIPT bool "Custom linker scripts provided" help Set this option if you have a custom linker script which needed to be define in CUSTOM_LINKER_SCRIPT. config CUSTOM_LINKER_SCRIPT string "Path to custom linker script" depends on HAVE_CUSTOM_LINKER_SCRIPT help Path to the linker script to be used instead of the one define by the board. The linker script must be based on a version provided by Zephyr since the kernel can expect a certain layout/certain regions. This is useful when an application needs to add sections into the linker script and avoid having to change the script provided by Zephyr. config KERNEL_ENTRY string "Kernel entry symbol" default "__start" help Code entry symbol, to be set at linking phase. config LINKER_SORT_BY_ALIGNMENT bool "Sort input sections by alignment" default y help This turns on the linker flag to sort sections by alignment in decreasing size of symbols. This helps to minimize padding between symbols. endmenu menu "Compiler Options" config CODING_GUIDELINE_CHECK bool "Enforce coding guideline rules" help Use available compiler flags to check coding guideline rules during the build. config NATIVE_APPLICATION bool "Build as a native host application" help Build as a native application that can run on the host and using resources and libraries provided by the host. choice prompt "Optimization level" default NO_OPTIMIZATIONS if COVERAGE default DEBUG_OPTIMIZATIONS if DEBUG default SIZE_OPTIMIZATIONS help Note that these flags shall only control the compiler optimization level, and that no extra debug code shall be conditionally compiled based on them. config SIZE_OPTIMIZATIONS bool "Optimize for size" help Compiler optimizations will be set to -Os independently of other options. config SPEED_OPTIMIZATIONS bool "Optimize for speed" help Compiler optimizations will be set to -O2 independently of other options. config DEBUG_OPTIMIZATIONS bool "Optimize debugging experience" help Compiler optimizations will be set to -Og independently of other options. config NO_OPTIMIZATIONS bool "Optimize nothing" help Compiler optimizations will be set to -O0 independently of other options. endchoice config COMPILER_OPT string "Custom compiler options" help This option is a free-form string that is passed to the compiler when building all parts of a project (i.e. kernel). The compiler options specified by this string supplement the predefined set of compiler supplied by the build system, and can be used to change compiler optimization, warning and error messages, and so on. endmenu choice prompt "Error checking behavior for CHECK macro" default RUNTIME_ERROR_CHECKS config ASSERT_ON_ERRORS bool "Assert on all errors" help Assert on errors covered with the CHECK macro. config NO_RUNTIME_CHECKS bool "No runtime error checks" help Do not do any runtime checks or asserts when using the CHECK macro. config RUNTIME_ERROR_CHECKS bool "Enable runtime error checks" help Always perform runtime checks covered with the CHECK macro. This option is the default and the only option used during testing. endchoice menu "Build Options" config KERNEL_BIN_NAME string "The kernel binary name" default "zephyr" help This option sets the name of the generated kernel binary. config OUTPUT_STAT bool "Create a statistics file" default y help Create a stat file using readelf -e <elf> config OUTPUT_DISASSEMBLY bool "Create a disassembly file" default y help Create an .lst file with the assembly listing of the firmware. config OUTPUT_DISASSEMBLE_ALL bool "Disassemble all sections with source. Fill zeros." default n depends on OUTPUT_DISASSEMBLY help The .lst file will contain complete disassembly of the firmware not just those expected to contain instructions including zeros config OUTPUT_PRINT_MEMORY_USAGE bool "Print memory usage to stdout" default y help If the toolchain supports it, this option will pass --print-memory-region to the linker when it is doing it's first linker pass. Note that the memory regions are symbolic concepts defined by the linker scripts and do not necessarily map directly to the real physical address space. Take also note that some platforms do two passes of the linker so the results do not match exactly to the final elf file. See also rom_report, ram_report and https://sourceware.org/binutils/docs/ld/MEMORY.html config BUILD_NO_GAP_FILL bool "Don't fill gaps in generated hex/bin/s19 files." config BUILD_OUTPUT_HEX bool "Build a binary in HEX format" help Build an Intel HEX binary zephyr/zephyr.hex in the build directory. The name of this file can be customized with CONFIG_KERNEL_BIN_NAME. config BUILD_OUTPUT_BIN bool "Build a binary in BIN format" default y help Build a "raw" binary zephyr/zephyr.bin in the build directory. The name of this file can be customized with CONFIG_KERNEL_BIN_NAME. config BUILD_OUTPUT_EXE bool "Build a binary in ELF format with .exe extension" help Build an ELF binary that can run in the host system at zephyr/zephyr.exe in the build directory. The name of this file can be customized with CONFIG_KERNEL_BIN_NAME. config BUILD_OUTPUT_S19 bool "Build a binary in S19 format" help Build an S19 binary zephyr/zephyr.s19 in the build directory. The name of this file can be customized with CONFIG_KERNEL_BIN_NAME. config BUILD_OUTPUT_STRIPPED bool "Build a stripped binary" help Build a stripped binary zephyr/zephyr.strip in the build directory. The name of this file can be customized with CONFIG_KERNEL_BIN_NAME. config APPLICATION_DEFINED_SYSCALL bool "Scan application folder for any syscall definition" help Scan additional folders inside application source folder for application defined syscalls. config MAKEFILE_EXPORTS bool "Generate build metadata files named Makefile.exports" help Generates a file with build information that can be read by third party Makefile-based build systems. config LEGACY_DEVICETREE_MACROS bool "Allow use of legacy devicetree macros" help Allows use of legacy devicetree macros which were used in Zephyr 2.2 and previous versions, rather than the devicetree.h API introduced during the Zephyr 2.3 development cycle. config DEPRECATED_ZEPHYR_INT_TYPES bool "Allow the use of the deprecated zephyr integer types" help Allows the use of the deprecated Zephyr integer typedefs defined in Zephyr 2.3 and previous versions. These types are: u8_t, u16_t, u32_t, u64_t, s8_t, s16_t, s32_t, and s64_t. endmenu endmenu menu "Boot Options" config IS_BOOTLOADER bool "Act as a bootloader" depends on XIP depends on ARM help This option indicates that Zephyr will act as a bootloader to execute a separate Zephyr image payload. config BOOTLOADER_SRAM_SIZE int "SRAM reserved for bootloader" default 16 depends on !XIP || IS_BOOTLOADER depends on ARM || XTENSA help This option specifies the amount of SRAM (measure in kB) reserved for a bootloader image, when either: - the Zephyr image itself is to act as the bootloader, or - Zephyr is a !XIP image, which implicitly assumes existence of a bootloader that loads the Zephyr !XIP image onto SRAM. config BOOTLOADER_MCUBOOT bool "MCUboot bootloader support" select USE_DT_CODE_PARTITION help This option signifies that the target uses MCUboot as a bootloader, or in other words that the image is to be chain-loaded by MCUboot. This sets several required build system and Device Tree options in order for the image generated to be bootable using the MCUboot open source bootloader. Currently this includes: * Setting ROM_START_OFFSET to a default value that allows space for the MCUboot image header * Activating SW_VECTOR_RELAY_CLIENT on Cortex-M0 (or Armv8-M baseline) targets with no built-in vector relocation mechanisms if BOOTLOADER_MCUBOOT config MCUBOOT_SIGNATURE_KEY_FILE string "Path to the mcuboot signing key file" default "" help The file contains a key pair whose public half is verified by your target's MCUboot image. The file is in PEM format. If set to a non-empty value, the build system tries to sign the final binaries using a 'west sign -t imgtool' command. The signed binaries are placed in the build directory at zephyr/zephyr.signed.bin and zephyr/zephyr.signed.hex. The file names can be customized with CONFIG_KERNEL_BIN_NAME. The existence of bin and hex files depends on CONFIG_BUILD_OUTPUT_BIN and CONFIG_BUILD_OUTPUT_HEX. This option should contain an absolute path to the same file as the BOOT_SIGNATURE_KEY_FILE option in your MCUboot .config. (The MCUboot config option is used for the MCUboot bootloader image; this option is for your application which is to be loaded by MCUboot. The MCUboot config option can be a relative path from the MCUboot repository root; this option's behavior is undefined for relative paths.) If left empty, you must sign the Zephyr binaries manually. config MCUBOOT_EXTRA_IMGTOOL_ARGS string "Extra arguments to pass to imgtool" default "" help If CONFIG_MCUBOOT_SIGNATURE_KEY_FILE is a non-empty string, you can use this option to pass extra options to imgtool. For example, you could set this to "--version 1.2". config MCUBOOT_GENERATE_CONFIRMED_IMAGE bool "Also generate a padded, confirmed image" help The signed, padded, and confirmed binaries are placed in the build directory at zephyr/zephyr.signed.confirmed.bin and zephyr/zephyr.signed.confirmed.hex. The file names can be customized with CONFIG_KERNEL_BIN_NAME. The existence of bin and hex files depends on CONFIG_BUILD_OUTPUT_BIN and CONFIG_BUILD_OUTPUT_HEX. endif # BOOTLOADER_MCUBOOT config BOOTLOADER_ESP_IDF bool "ESP-IDF bootloader support" depends on SOC_ESP32 help This option will trigger the compilation of the ESP-IDF bootloader inside the build folder. At flash time, the bootloader will be flashed with the zephyr image config BOOTLOADER_BOSSA bool "BOSSA bootloader support" select USE_DT_CODE_PARTITION depends on SOC_FAMILY_SAM0 help Signifies that the target uses a BOSSA compatible bootloader. If CDC ACM USB support is also enabled then the board will reboot into the bootloader automatically when bossac is run. config BOOTLOADER_BOSSA_DEVICE_NAME string "BOSSA CDC ACM device name" depends on BOOTLOADER_BOSSA && CDC_ACM_DTE_RATE_CALLBACK_SUPPORT default "CDC_ACM_0" help Sets the CDC ACM port to watch for reboot commands. choice prompt "BOSSA bootloader variant" depends on BOOTLOADER_BOSSA config BOOTLOADER_BOSSA_ARDUINO bool "Arduino" help Select the Arduino variant of the BOSSA bootloader. Uses 0x07738135 as the magic value to enter the bootloader. config BOOTLOADER_BOSSA_ADAFRUIT_UF2 bool "Adafruit UF2" help Select the Adafruit UF2 variant of the BOSSA bootloader. Uses 0xf01669ef as the magic value to enter the bootloader. endchoice config BOOTLOADER_KEXEC bool "Boot using Linux kexec() system call" depends on X86 help This option signifies that Linux boots the kernel using kexec system call and utility. This method is used to boot the kernel over the network. config BOOTLOADER_CONTEXT_RESTORE bool "Boot loader has context restore support" default y depends on SYS_POWER_DEEP_SLEEP_STATES && BOOTLOADER_CONTEXT_RESTORE_SUPPORTED help This option signifies that the target has a bootloader that restores CPU context upon resuming from deep sleep power state. config REBOOT bool "Reboot functionality" select SYSTEM_CLOCK_DISABLE help Enable the sys_reboot() API. Enabling this can drag in other subsystems needed to perform a "safe" reboot (e.g. SYSTEM_CLOCK_DISABLE, to stop the system clock before issuing a reset). config MISRA_SANE bool "MISRA standards compliance features" help Causes the source code to build in "MISRA" mode, which disallows some otherwise-permitted features of the C standard for safety reasons. Specifically variable length arrays are not permitted (and gcc will enforce this). endmenu menu "Compatibility" config COMPAT_INCLUDES bool "Suppress warnings when using header shims" default y help Suppress any warnings from the pre-processor when including deprecated header files. endmenu |