2 # Copyright (c) 2006 Ondrej Palkovsky
3 # Copyright (c) 2009 Martin Decky
6 # Redistribution and use in source and binary forms, with or without
7 # modification, are permitted provided that the following conditions
10 # - Redistributions of source code must retain the above copyright
11 # notice, this list of conditions and the following disclaimer.
12 # - Redistributions in binary form must reproduce the above copyright
13 # notice, this list of conditions and the following disclaimer in the
14 # documentation and/or other materials provided with the distribution.
15 # - The name of the author may not be used to endorse or promote products
16 # derived from this software without specific prior written permission.
18 # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 ## General platform options
33 @ "abs32le" abstract 32-bit little endian
34 @ "amd64" AMD64/EM64T 64-bit (PC)
36 @ "ia32" IA-32 32-bit (PC)
38 @ "mips32" MIPS 32-bit
39 @ "ppc32" PowerPC 32-bit
40 @ "riscv64" RISC-V 64-bit
41 @ "sparc64" SPARCv9 64-bit
46 @ "bmalta" MIPS Malta Development Board big endian
47 @ "lmalta" MIPS Malta Development Board little endian
48 ! [PLATFORM=mips32] MACHINE (choice)
51 @ "i460GX" i460GX chipset machine
52 @ "ski" Ski ia64 simulator
53 ! [PLATFORM=ia64] MACHINE (choice)
56 @ "generic" Generic Sun workstation or server
57 ! [PLATFORM=sparc64] MACHINE (choice)
60 @ "gta02" GTA02 / Neo FreeRunner
61 @ "integratorcp" Integratorcp
62 @ "beagleboardxm" BeagleBoard-xM
63 @ "beaglebone" BeagleBone
64 @ "raspberrypi" Raspberry Pi
65 ! [PLATFORM=arm32] MACHINE (choice)
68 @ "pentium4" Pentium 4
69 @ "pentium3" Pentium 3
70 @ "core" Core Solo/Duo
71 @ "athlon_xp" Athlon XP
72 @ "athlon_mp" Athlon MP
74 ! [PLATFORM=ia32] PROCESSOR (choice)
78 ! [PLATFORM=amd64] PROCESSOR (choice)
81 @ "us" UltraSPARC I-II subarchitecture
82 @ "us3" UltraSPARC III-IV subarchitecture
83 @ "sun4v" Niagara (sun4v)
84 ! [PLATFORM=sparc64&MACHINE=generic] PROCESSOR (choice)
87 @ "cortex_a8" ARM Cortex A-8
88 ! [PLATFORM=arm32&(MACHINE=beagleboardxm|MACHINE=beaglebone)] PROCESSOR (choice)
92 ! [PLATFORM=arm32&MACHINE=gta02] PROCESSOR (choice)
95 @ "arm926ej_s" ARM926EJ-S
96 ! [PLATFORM=arm32&MACHINE=integratorcp] PROCESSOR (choice)
100 ! [PLATFORM=arm32&MACHINE=raspberrypi] PROCESSOR (choice)
102 # Add more ARMv4 CPUs
105 ! [PLATFORM=arm32&(PROCESSOR=arm920t)] PROCESSOR_ARCH (choice)
107 # Add more ARMv5 CPUs
110 ! [PLATFORM=arm32&(PROCESSOR=arm926ej_s)] PROCESSOR_ARCH (choice)
112 # Add more ARMv6 CPUs
115 ! [PLATFORM=arm32&(PROCESSOR=arm1176)] PROCESSOR_ARCH (choice)
117 # Add more ARMv7-A CPUs
120 ! [PLATFORM=arm32&(PROCESSOR=cortex_a8)] PROCESSOR_ARCH (choice)
124 ! [PLATFORM=mips32&MACHINE=msim] PROCESSOR (choice)
128 ! [PLATFORM=mips32&(MACHINE=bmalta|MACHINE=lmalta)] PROCESSOR (choice)
130 % Kernel memory model
133 ! [PLATFORM=amd64] MEMORY_MODEL (choice)
136 @ "tmpfs" TMPFS image
138 @ "ext4fs" ext4 image
142 ## Mapping between platform and kernel architecture
144 % Kernel architecture
146 ! [PLATFORM=abs32le] KARCH (choice)
148 % Kernel architecture
150 ! [PLATFORM=amd64] KARCH (choice)
152 % Kernel architecture
154 ! [PLATFORM=arm32] KARCH (choice)
156 % Kernel architecture
158 ! [PLATFORM=ia32] KARCH (choice)
160 % Kernel architecture
162 ! [PLATFORM=ia32xen] KARCH (choice)
164 % Kernel architecture
166 ! [PLATFORM=ia64] KARCH (choice)
168 % Kernel architecture
170 ! [PLATFORM=mips32] KARCH (choice)
172 % Kernel architecture
174 ! [PLATFORM=ppc32] KARCH (choice)
176 % Kernel architecture
178 ! [PLATFORM=ppc64] KARCH (choice)
180 % Kernel architecture
182 ! [PLATFORM=riscv64] KARCH (choice)
184 % Kernel architecture
186 ! [PLATFORM=sparc64] KARCH (choice)
189 ## Mapping between platform and user space architecture
191 % User space architecture
193 ! [PLATFORM=abs32le] UARCH (choice)
195 % User space architecture
197 ! [PLATFORM=amd64] UARCH (choice)
199 % User space architecture
201 ! [PLATFORM=arm32] UARCH (choice)
203 % User space architecture
205 ! [PLATFORM=ia32|PLATFORM=ia32xen] UARCH (choice)
207 % User space architecture
209 ! [PLATFORM=ia64] UARCH (choice)
211 % User space architecture
213 ! [PLATFORM=mips32&(MACHINE=msim|MACHINE=lmalta)] UARCH (choice)
215 % User space architecture
217 ! [PLATFORM=mips32&MACHINE=bmalta] UARCH (choice)
219 % User space architecture
221 ! [PLATFORM=ppc32] UARCH (choice)
223 % User space architecture
225 ! [PLATFORM=ppc64] UARCH (choice)
227 % User space architecture
229 ! [PLATFORM=riscv64] UARCH (choice)
231 % User space architecture
233 ! [PLATFORM=sparc64] UARCH (choice)
236 ## Mapping between platform and boot architecture
240 ! [PLATFORM=abs32le] BARCH (choice)
244 ! [PLATFORM=amd64] BARCH (choice)
248 ! [PLATFORM=arm32] BARCH (choice)
252 ! [PLATFORM=ia32] BARCH (choice)
256 ! [PLATFORM=ia32xen] BARCH (choice)
260 ! [PLATFORM=ia64] BARCH (choice)
264 ! [PLATFORM=mips32] BARCH (choice)
268 ! [PLATFORM=ppc32] BARCH (choice)
272 ! [PLATFORM=ppc64] BARCH (choice)
276 ! [PLATFORM=riscv64] BARCH (choice)
280 ! [PLATFORM=sparc64] BARCH (choice)
283 ## Mapping between platform and image format
287 ! [PLATFORM=mips32&MACHINE=msim] IMAGE (choice)
291 ! [PLATFORM=mips32&(MACHINE=bmalta|MACHINE=lmalta)] IMAGE (choice)
297 @ "gcc_cross" GNU C Compiler (cross-compiler)
299 @ "gcc_helenos" GNU C Compiler (experimental HelenOS-specific cross-compiler)
300 @ "icc" Intel C Compiler
301 @ "gcc_native" GNU C Compiler (native)
302 ! [PLATFORM=amd64|PLATFORM=ia32|PLATFORM=ia64] COMPILER (choice)
305 @ "gcc_cross" GNU C Compiler (cross-compiler)
307 @ "gcc_helenos" GNU C Compiler (experimental HelenOS-specific cross-compiler)
308 @ "gcc_native" GNU C Compiler (native)
309 ! [PLATFORM=mips32|PLATFORM=ppc32|PLATFORM=abs32le|PLATFORM=arm32|PLATFORM=sparc64|PLATFORM=riscv64] COMPILER (choice)
311 % Clang Integrated Assembler
312 @ "default" Use architecture default.
313 @ "yes" Use integrated assembler.
314 @ "no" Use GNU Assembler.
315 ! [COMPILER=clang] INTEGRATED_AS (choice)
317 ## Cross-compiler target for abstract architecture
319 % Cross-compiler target
322 @ "mips32" MIPS 32-bit
323 ! [PLATFORM=abs32le&(COMPILER=gcc_cross|COMPILER=gcc_helenos)] CROSS_TARGET (choice)
326 ## Kernel configuration
329 ! [PLATFORM=ia32&(PROCESSOR=athlon_xp|PROCESSOR=athlon_mp|PROCESSOR=pentium3)] CONFIG_FENCES_P3 (y)
332 ! [PLATFORM=ia32&(PROCESSOR=pentium4|PROCESSOR=core)] CONFIG_FENCES_P4 (y)
335 ! [PLATFORM=amd64] CONFIG_FENCES_P4 (y)
337 % IOMAP bitmap support
338 ! [PLATFORM=ia32|PLATFORM=amd64] CONFIG_IOMAP_BITMAP (y)
340 % IOMAP dummy support
341 ! [PLATFORM=abs32le|PLATFORM=arm32|PLATFORM=mips32|PLATFORM=ppc32|PLATFORM=riscv64|PLATFORM=sparc64] CONFIG_IOMAP_DUMMY (y)
344 ! [PLATFORM=ia32|PLATFORM=amd64] CONFIG_ACPI (y)
346 % Hierarchical page tables support
347 ! [PLATFORM=abs32le|PLATFORM=ia32|PLATFORM=amd64|PLATFORM=arm32|PLATFORM=mips32|PLATFORM=ppc32|PLATFORM=riscv64] CONFIG_PAGE_PT (y)
349 % Page hash table support
350 ! [PLATFORM=ia64|PLATFORM=sparc64] CONFIG_PAGE_HT (y)
352 % Software integer division support
353 ! [PLATFORM=abs32le|PLATFORM=ia32|PLATFORM=arm32|PLATFORM=ia64|PLATFORM=mips32|PLATFORM=ppc32] CONFIG_SOFTINT (y)
356 ! [PLATFORM=ia64|PLATFORM=mips32|PLATFORM=ppc32|PLATFORM=sparc64] CONFIG_ASID (y)
359 ! [PLATFORM=ia64|PLATFORM=mips32|PLATFORM=ppc32|PLATFORM=sparc64] CONFIG_ASID_FIFO (y)
361 % OpenFirmware tree support
362 ! [PLATFORM=ppc32|PLATFORM=sparc64] CONFIG_OFW_TREE (y)
364 % OpenFirmware PCI bus support
365 ! [PLATFORM=sparc64] CONFIG_OFW_PCI (y)
367 % Multiboot standard support
368 ! [PLATFORM=ia32|PLATFORM=amd64] CONFIG_MULTIBOOT (y)
371 ! [PLATFORM=ia32|PLATFORM=amd64|PLATFORM=ia64|PLATFORM=ppc32|PLATFORM=sparc64] CONFIG_FPU (y)
373 ## ARMv7 made FPU hardware compulsory
375 ! [PLATFORM=arm32&PROCESSOR_ARCH=armv7_a] CONFIG_FPU (y)
378 ! [PLATFORM=arm32&MACHINE=integratorcp] CONFIG_FPU (y)
381 ## Kernel features options
384 ! [(PLATFORM=ia32&PROCESSOR!=athlon_xp)|PLATFORM=amd64|PLATFORM=sparc64|PLATFORM=ia64|(PLATFORM=mips32&MACHINE=msim)|PLATFORM=abs32le] CONFIG_SMP (y/n)
389 % Deadlock detection support for spinlocks
390 ! [CONFIG_DEBUG=y&CONFIG_SMP=y] CONFIG_DEBUG_SPINLOCK (y/n)
392 % Lazy FPU context switching
393 ! [CONFIG_FPU=y] CONFIG_FPU_LAZY (y/n)
396 ! [PLATFORM=ia64] CONFIG_VHPT (n/y)
399 ! [PLATFORM=sparc64] CONFIG_TSB (y/n)
401 % IO SAPIC on default address support
402 ! [PLATFORM=ia64&MACHINE!=ski] CONFIG_IOSAPIC (y/n)
404 % Virtually indexed D-cache support
405 ! [PLATFORM=sparc64] CONFIG_VIRT_IDX_DCACHE (y/n)
408 ! [PROCESSOR=sun4v&CONFIG_SMP=y] CONFIG_SIMICS_SMP_HACK (n/y)
410 % Support for userspace debuggers
411 ! CONFIG_UDEBUG (y/n)
413 % Kernel console support
414 ! CONFIG_KCONSOLE (y/n)
416 % Kernel symbol information
417 ! CONFIG_SYMTAB (y/n)
419 % Detailed kernel logging
422 % Kernel function tracing
425 % Compile kernel tests
428 % Use link-time optimization
429 ! [COMPILER=gcc_cross|COMPILER=gcc_native] CONFIG_LTO (n/y)
431 % Kernel RCU algorithm
432 @ "PREEMPT_PODZIMEK" Preemptible Podzimek-RCU
433 @ "PREEMPT_A" Preemptible A-RCU
437 ## User space features options
439 % Light weight futex locks
440 ! FUTEX_UPGRADABLE (n/y)
446 @ "generic" Keyboard or serial line
447 ! [PLATFORM=arm32&MACHINE=integratorcp] CONFIG_HID_IN (choice)
450 @ "generic" Keyboard or serial line
451 @ "none" No input device
452 ! [PLATFORM=ia32|PLATFORM=amd64|PLATFORM=mips32|PLATFORM=ppc32|PLATFORM=riscv64|PLATFORM=sparc64] CONFIG_HID_IN (choice)
455 @ "generic" Keyboard or serial line
456 @ "keyboard" Keyboard
457 @ "serial" Serial line
458 @ "none" No input device
459 ! [PLATFORM=ia64&MACHINE=i460GX] CONFIG_HID_IN (choice)
461 % Output device class
462 @ "generic" Monitor or serial line
463 ! [PLATFORM=arm32&(MACHINE=gta02|MACHINE=integratorcp|MACHINE=beagleboardxm|MACHINE=beaglebone|MACHINE=raspberrypi)] CONFIG_HID_OUT (choice)
465 % Output device class
466 @ "generic" Monitor or serial line
467 @ "none" No output device
468 ! [PLATFORM=ia32|PLATFORM=amd64|PLATFORM=sparc64|PLATFORM=ppc32|(PLATFORM=ia64&MACHINE=i460GX)|(PLATFORM=mips32&(MACHINE=msim|MACHINE=bmalta|MACHINE=lmalta))|PLATFORM=riscv64] CONFIG_HID_OUT (choice)
470 % PC keyboard support
471 ! [(CONFIG_HID_IN=generic|CONFIG_HID_IN=keyboard)&(PLATFORM=ia32|PLATFORM=amd64)] CONFIG_PC_KBD (y/n)
473 % PC keyboard support
474 ! [(CONFIG_HID_IN=generic|CONFIG_HID_IN=keyboard)&PLATFORM=ia64&MACHINE=i460GX] CONFIG_PC_KBD (y/n)
476 % PC keyboard support
477 ! [(CONFIG_HID_IN=generic|CONFIG_HID_IN=keyboard)&PLATFORM=arm32&MACHINE=integratorcp] CONFIG_AT_KBD (y/n)
479 % Support for msim keyboard
480 ! [CONFIG_HID_IN=generic&MACHINE=msim] CONFIG_MSIM_KBD (y/n)
482 % Support for msim printer
483 ! [(CONFIG_HID_OUT=generic|CONFIG_HID_OUT=serial)&MACHINE=msim] CONFIG_MSIM_PRN (y/n)
485 % Support for VIA CUDA controller
486 ! [CONFIG_HID_IN=generic&PLATFORM=ppc32] CONFIG_VIA_CUDA (y/n)
488 % Support for NS16550 controller
489 ! [(CONFIG_HID_IN=generic|CONFIG_HID_IN=keyboard)&PLATFORM=sparc64&MACHINE=generic] CONFIG_NS16550 (y/n)
491 % Support for NS16550 controller
492 ! [(CONFIG_HID_IN=generic|CONFIG_HID_IN=serial)&PLATFORM=ia64&MACHINE=i460GX] CONFIG_NS16550 (y/n)
494 % Support for PL011 UART
495 ! [(CONFIG_HID_OUT=generic|CONFIG_HID_OUT=serial)&PLATFORM=arm32&(MACHINE=integratorcp|MACHINE=raspberrypi)] CONFIG_PL011_UART (y/n)
497 % Support for NS16550 controller (kernel console)
498 ! [(CONFIG_HID_IN=generic|CONFIG_HID_IN=serial|CONFIG_HID_OUT=generic|CONFIG_HID_OUT=serial)&(PLATFORM=ia32|PLATFORM=amd64)] CONFIG_NS16550_KCON (n/y)
500 % Use NS16550 controller as serial input (kernel console)
501 ! [(CONFIG_HID_IN=generic|CONFIG_HID_IN=serial)&(PLATFORM=ia32|PLATFORM=amd64)&CONFIG_NS16550_KCON=y] CONFIG_NS16550 (y)
503 % Use NS16550 controller as dummy serial output (kernel console)
504 ! [(CONFIG_HID_OUT=generic|CONFIG_HID_OUT=serial)&(PLATFORM=ia32|PLATFORM=amd64)&CONFIG_NS16550_KCON=y] CONFIG_NS16550_OUT (y)
506 % Support for Samsung S3C24XX on-chip UART
507 ! [(CONFIG_HID_OUT=generic|CONFIG_HID_OUT=serial)&PLATFORM=arm32&MACHINE=gta02] CONFIG_S3C24XX_UART (y/n)
509 % Support for Samsung S3C24XX on-chip interrupt controller
510 ! [PLATFORM=arm32&MACHINE=gta02] CONFIG_S3C24XX_IRQC (y)
512 % Support for TI AM335x timers support
513 ! [PLATFORM=arm32&MACHINE=beaglebone] CONFIG_AM335X_TIMERS (y)
515 % Support for OMAP on-chip UART
516 ! [(CONFIG_HID_OUT=generic|CONFIG_HID_OUT=serial)&PLATFORM=arm32&(MACHINE=beagleboardxm|MACHINE=beaglebone)] CONFIG_OMAP_UART (y/n)
518 % Support for BCM2835 mailbox
519 ! [PLATFORM=arm32&MACHINE=raspberrypi] CONFIG_BCM2835_MAILBOX (y/n)
521 % Support for i8042 controller
522 ! [CONFIG_PC_KBD=y] CONFIG_I8042 (y)
524 % Support for pl050 controller
525 ! [CONFIG_HID_IN=generic&PLATFORM=arm32&MACHINE=integratorcp] CONFIG_PL050 (y)
527 % Sun keyboard support
528 ! [(CONFIG_HID_IN=generic|CONFIG_HID_IN=keyboard)&PLATFORM=sparc64&MACHINE=generic&CONFIG_NS16550=y] CONFIG_SUN_KBD (y)
530 % Macintosh ADB keyboard support
531 ! [(CONFIG_HID_IN=generic|CONFIG_HID_IN=keyboard)&PLATFORM=ppc32&(CONFIG_VIA_CUDA=y)] CONFIG_MAC_KBD (y)
533 % Dummy serial line input
534 ! [CONFIG_MSIM_KBD=y|CONFIG_ARM_KBD=y] CONFIG_DSRLNIN (y)
536 % Dummy serial line output
537 ! [CONFIG_MSIM_PRN=y|CONFIG_ARM_PRN=y] CONFIG_DSRLNOUT (y)
539 % Serial line input module
540 ! [CONFIG_DSRLNIN=y|(PLATFORM=arm32&MACHINE=gta02)|(PLATFORM=arm32&MACHINE=integratorcp&CONFIG_PL011_UART=y)|(PLATFORM=arm32&MACHINE=beaglebone&CONFIG_OMAP_UART=y)|(PLATFORM=arm32&MACHINE=beagleboardxm&CONFIG_OMAP_UART=y)|(PLATFORM=ia64&MACHINE=i460GX&CONFIG_NS16550=y)|(PLATFORM=ia64&MACHINE=ski)|(PLATFORM=sparc64&PROCESSOR=sun4v)|(PLATFORM=arm32&MACHINE=raspberrypi&CONFIG_PL011_UART=y)|(PLATFORM=ia32&CONFIG_NS16550=y)|(PLATFORM=amd64&CONFIG_NS16550=y)] CONFIG_SRLN (y)
543 ! [CONFIG_HID_OUT=generic&(PLATFORM=ia32|PLATFORM=amd64)] CONFIG_EGA (y/n)
546 ! [CONFIG_HID_OUT=generic&PLATFORM=ia64&MACHINE=i460GX] CONFIG_EGA (y/n)
548 % Framebuffer support
549 ! [CONFIG_HID_OUT=generic&(PLATFORM=ia32|PLATFORM=amd64|PLATFORM=ppc32)] CONFIG_FB (y/n)
551 % Framebuffer support
552 ! [(CONFIG_HID_OUT=generic|CONFIG_HID_OUT=monitor)&PLATFORM=arm32] CONFIG_FB (y/n)
554 % Framebuffer support
555 ! [(CONFIG_HID_OUT=generic|CONFIG_HID_OUT=monitor)&PLATFORM=sparc64&MACHINE=generic] CONFIG_FB (y/n)
557 % Default framebuffer mode
573 ! [(PLATFORM=ia32|PLATFORM=amd64|MACHINE=beagleboardxm)&CONFIG_HID_OUT!=none&CONFIG_FB=y] CONFIG_BFB_MODE (choice)
575 % Default framebuffer depth
580 ! [(PLATFORM=ia32|PLATFORM=amd64|MACHINE=beagleboardxm)&CONFIG_HID_OUT!=none&CONFIG_FB=y] CONFIG_BFB_BPP (choice)
582 % Start AP processors by the loader
583 ! [PLATFORM=sparc64&CONFIG_SMP=y] CONFIG_AP (y/n)
585 % Dynamic linking support
586 ! [PLATFORM=ia32] CONFIG_RTLD (n/y)
587 ! [PLATFORM=abs32le|PLATFORM=amd64|PLATFORM=arm32|PLATFORM=ia64|PLATFORM=mips32|PLATFORM=ppc32|PLATFORM=riscv64|PLATFORM=sparc64] CONFIG_RTLD (n)
589 % Build shared libraries
590 ! [CONFIG_RTLD=y] CONFIG_BUILD_SHARED_LIBS (n/y)
591 ! [CONFIG_RTLD=n] CONFIG_BUILD_SHARED_LIBS (n)
593 % Link against shared libraries
594 ! [CONFIG_BUILD_SHARED_LIBS=y] CONFIG_USE_SHARED_LIBS (n/y)
595 ! [CONFIG_BUILD_SHARED_LIBS=n] CONFIG_USE_SHARED_LIBS (n)
597 % Launch (devman) test drivers
598 ! [CONFIG_DEBUG=y] CONFIG_TEST_DRIVERS (n/y)
601 ! CONFIG_WRITE_CORE_FILES (n/y)
603 % Include userspace unit tests (PCUT)
604 ! CONFIG_PCUT_TESTS (n/y)
606 % Include PCUT self-tests
607 ! CONFIG_PCUT_SELF_TESTS (n/y)
609 % Include development files (headers, libraries)
610 ! CONFIG_DEVEL_FILES (n/y)
613 ! CONFIG_STRIP_BINARIES (n/y)
616 @ "3" Level 3 (recommended).
619 @ "0" Disable optimizations.
620 @ "s" Optimize for size.
621 @ "g" Enable only optimizations that don't harm debugging.
622 @ "fast" Level 3 + aggressive optimizations that can affect adherence to standards.
623 ! OPTIMIZATION (choice)
625 % Barebone build with essential binaries only
626 ! CONFIG_BAREBONE (n/y)
628 % Line debugging information
629 ! [CONFIG_STRIP_BINARIES!=y] CONFIG_LINE_DEBUG (n/y)
633 % Start virtual USB host controller
634 ! CONFIG_RUN_VIRTUAL_USB_HC (n/y)
636 % OHCI root hub port power switching
637 @ "no" All root hub ports are always powered.
638 @ "ganged" Root hub ports are all powered or all off.
639 @ "per_port" Powered status of every root hub port is independent.
640 ! [PLATFORM=ia32|PLATFORM=amd64|PLATFORM=ppc32] OHCI_POWER_SWITCH (choice)
642 % GRUB boot loader architecture
644 @ "efi" GRUB for UEFI
645 ! [PLATFORM=ia32|PLATFORM=amd64] GRUB_ARCH (choice)
648 @ "2" NetBSD stage 2 boot loader
649 ! [PLATFORM=arm32&(MACHINE=beagleboardxm|MACHINE=beaglebone)] UIMAGE_OS (choice)
653 ! [PLATFORM=arm32&MACHINE!=beagleboardxm&MACHINE!=beaglebone] UIMAGE_OS (choice)