1config SUPERH 2 def_bool y 3 select ARCH_MIGHT_HAVE_PC_PARPORT 4 select EXPERT 5 select CLKDEV_LOOKUP 6 select HAVE_IDE if HAS_IOPORT 7 select HAVE_MEMBLOCK 8 select HAVE_MEMBLOCK_NODE_MAP 9 select ARCH_DISCARD_MEMBLOCK 10 select HAVE_OPROFILE 11 select HAVE_GENERIC_DMA_COHERENT 12 select HAVE_ARCH_TRACEHOOK 13 select HAVE_DMA_API_DEBUG 14 select HAVE_DMA_ATTRS 15 select HAVE_PERF_EVENTS 16 select HAVE_DEBUG_BUGVERBOSE 17 select ARCH_HAVE_CUSTOM_GPIO_H 18 select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A) 19 select PERF_USE_VMALLOC 20 select HAVE_DEBUG_KMEMLEAK 21 select HAVE_KERNEL_GZIP 22 select HAVE_KERNEL_BZIP2 23 select HAVE_KERNEL_LZMA 24 select HAVE_KERNEL_XZ 25 select HAVE_KERNEL_LZO 26 select HAVE_UID16 27 select ARCH_WANT_IPC_PARSE_VERSION 28 select HAVE_SYSCALL_TRACEPOINTS 29 select HAVE_REGS_AND_STACK_ACCESS_API 30 select MAY_HAVE_SPARSE_IRQ 31 select IRQ_FORCED_THREADING 32 select RTC_LIB 33 select GENERIC_ATOMIC64 34 select GENERIC_IRQ_SHOW 35 select GENERIC_SMP_IDLE_THREAD 36 select GENERIC_IDLE_POLL_SETUP 37 select GENERIC_CLOCKEVENTS 38 select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST 39 select GENERIC_STRNCPY_FROM_USER 40 select GENERIC_STRNLEN_USER 41 select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER 42 select MODULES_USE_ELF_RELA 43 select OLD_SIGSUSPEND 44 select OLD_SIGACTION 45 help 46 The SuperH is a RISC processor targeted for use in embedded systems 47 and consumer electronics; it was also used in the Sega Dreamcast 48 gaming console. The SuperH port has a home page at 49 <http://www.linux-sh.org/>. 50 51config SUPERH32 52 def_bool ARCH = "sh" 53 select HAVE_KPROBES 54 select HAVE_KRETPROBES 55 select HAVE_IOREMAP_PROT if MMU && !X2TLB 56 select HAVE_FUNCTION_TRACER 57 select HAVE_FTRACE_MCOUNT_RECORD 58 select HAVE_DYNAMIC_FTRACE 59 select HAVE_FUNCTION_TRACE_MCOUNT_TEST 60 select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE 61 select ARCH_WANT_IPC_PARSE_VERSION 62 select HAVE_FUNCTION_GRAPH_TRACER 63 select HAVE_ARCH_KGDB 64 select HAVE_HW_BREAKPOINT 65 select HAVE_MIXED_BREAKPOINTS_REGS 66 select PERF_EVENTS 67 select ARCH_HIBERNATION_POSSIBLE if MMU 68 select SPARSE_IRQ 69 70config SUPERH64 71 def_bool ARCH = "sh64" 72 select KALLSYMS 73 74config ARCH_DEFCONFIG 75 string 76 default "arch/sh/configs/shx3_defconfig" if SUPERH32 77 default "arch/sh/configs/cayman_defconfig" if SUPERH64 78 79config RWSEM_GENERIC_SPINLOCK 80 def_bool y 81 82config RWSEM_XCHGADD_ALGORITHM 83 bool 84 85config GENERIC_BUG 86 def_bool y 87 depends on BUG && SUPERH32 88 89config GENERIC_CSUM 90 def_bool y 91 depends on SUPERH64 92 93config GENERIC_HWEIGHT 94 def_bool y 95 96config GENERIC_CALIBRATE_DELAY 97 bool 98 99config GENERIC_LOCKBREAK 100 def_bool y 101 depends on SMP && PREEMPT 102 103config ARCH_SUSPEND_POSSIBLE 104 def_bool n 105 106config ARCH_HIBERNATION_POSSIBLE 107 def_bool n 108 109config SYS_SUPPORTS_APM_EMULATION 110 bool 111 select ARCH_SUSPEND_POSSIBLE 112 113config SYS_SUPPORTS_HUGETLBFS 114 bool 115 116config SYS_SUPPORTS_SMP 117 bool 118 119config SYS_SUPPORTS_NUMA 120 bool 121 122config SYS_SUPPORTS_PCI 123 bool 124 125config SYS_SUPPORTS_CMT 126 bool 127 128config SYS_SUPPORTS_MTU2 129 bool 130 131config SYS_SUPPORTS_TMU 132 bool 133 134config STACKTRACE_SUPPORT 135 def_bool y 136 137config LOCKDEP_SUPPORT 138 def_bool y 139 140config HAVE_LATENCYTOP_SUPPORT 141 def_bool y 142 143config ARCH_HAS_ILOG2_U32 144 def_bool n 145 146config ARCH_HAS_ILOG2_U64 147 def_bool n 148 149config NO_IOPORT 150 def_bool !PCI 151 depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN && \ 152 !SH_HP6XX && !SH_SOLUTION_ENGINE 153 154config IO_TRAPPED 155 bool 156 157config SWAP_IO_SPACE 158 bool 159 160config DMA_COHERENT 161 bool 162 163config DMA_NONCOHERENT 164 def_bool !DMA_COHERENT 165 166config NEED_DMA_MAP_STATE 167 def_bool DMA_NONCOHERENT 168 169config NEED_SG_DMA_LENGTH 170 def_bool y 171 172source "init/Kconfig" 173 174source "kernel/Kconfig.freezer" 175 176menu "System type" 177 178# 179# Processor families 180# 181config CPU_SH2 182 bool 183 184config CPU_SH2A 185 bool 186 select CPU_SH2 187 select UNCACHED_MAPPING 188 189config CPU_SH3 190 bool 191 select CPU_HAS_INTEVT 192 select CPU_HAS_SR_RB 193 select SYS_SUPPORTS_TMU 194 195config CPU_SH4 196 bool 197 select CPU_HAS_INTEVT 198 select CPU_HAS_SR_RB 199 select CPU_HAS_FPU if !CPU_SH4AL_DSP 200 select SYS_SUPPORTS_TMU 201 select SYS_SUPPORTS_HUGETLBFS if MMU 202 203config CPU_SH4A 204 bool 205 select CPU_SH4 206 207config CPU_SH4AL_DSP 208 bool 209 select CPU_SH4A 210 select CPU_HAS_DSP 211 212config CPU_SH5 213 bool 214 select CPU_HAS_FPU 215 select SYS_SUPPORTS_TMU 216 select SYS_SUPPORTS_HUGETLBFS if MMU 217 218config CPU_SHX2 219 bool 220 221config CPU_SHX3 222 bool 223 select DMA_COHERENT 224 select SYS_SUPPORTS_SMP 225 select SYS_SUPPORTS_NUMA 226 227config ARCH_SHMOBILE 228 bool 229 select ARCH_SUSPEND_POSSIBLE 230 select PM 231 select PM_RUNTIME 232 233config CPU_HAS_PMU 234 depends on CPU_SH4 || CPU_SH4A 235 default y 236 bool 237 238if SUPERH32 239 240choice 241 prompt "Processor sub-type selection" 242 243# 244# Processor subtypes 245# 246 247# SH-2 Processor Support 248 249config CPU_SUBTYPE_SH7619 250 bool "Support SH7619 processor" 251 select CPU_SH2 252 select SYS_SUPPORTS_CMT 253 254# SH-2A Processor Support 255 256config CPU_SUBTYPE_SH7201 257 bool "Support SH7201 processor" 258 select CPU_SH2A 259 select CPU_HAS_FPU 260 select SYS_SUPPORTS_MTU2 261 262config CPU_SUBTYPE_SH7203 263 bool "Support SH7203 processor" 264 select CPU_SH2A 265 select CPU_HAS_FPU 266 select SYS_SUPPORTS_CMT 267 select SYS_SUPPORTS_MTU2 268 select ARCH_WANT_OPTIONAL_GPIOLIB 269 select PINCTRL 270 271config CPU_SUBTYPE_SH7206 272 bool "Support SH7206 processor" 273 select CPU_SH2A 274 select SYS_SUPPORTS_CMT 275 select SYS_SUPPORTS_MTU2 276 277config CPU_SUBTYPE_SH7263 278 bool "Support SH7263 processor" 279 select CPU_SH2A 280 select CPU_HAS_FPU 281 select SYS_SUPPORTS_CMT 282 select SYS_SUPPORTS_MTU2 283 284config CPU_SUBTYPE_SH7264 285 bool "Support SH7264 processor" 286 select CPU_SH2A 287 select CPU_HAS_FPU 288 select SYS_SUPPORTS_CMT 289 select SYS_SUPPORTS_MTU2 290 select PINCTRL 291 292config CPU_SUBTYPE_SH7269 293 bool "Support SH7269 processor" 294 select CPU_SH2A 295 select CPU_HAS_FPU 296 select SYS_SUPPORTS_CMT 297 select SYS_SUPPORTS_MTU2 298 select PINCTRL 299 300config CPU_SUBTYPE_MXG 301 bool "Support MX-G processor" 302 select CPU_SH2A 303 select SYS_SUPPORTS_MTU2 304 help 305 Select MX-G if running on an R8A03022BG part. 306 307# SH-3 Processor Support 308 309config CPU_SUBTYPE_SH7705 310 bool "Support SH7705 processor" 311 select CPU_SH3 312 313config CPU_SUBTYPE_SH7706 314 bool "Support SH7706 processor" 315 select CPU_SH3 316 help 317 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU. 318 319config CPU_SUBTYPE_SH7707 320 bool "Support SH7707 processor" 321 select CPU_SH3 322 help 323 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU. 324 325config CPU_SUBTYPE_SH7708 326 bool "Support SH7708 processor" 327 select CPU_SH3 328 help 329 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or 330 if you have a 100 Mhz SH-3 HD6417708R CPU. 331 332config CPU_SUBTYPE_SH7709 333 bool "Support SH7709 processor" 334 select CPU_SH3 335 help 336 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU. 337 338config CPU_SUBTYPE_SH7710 339 bool "Support SH7710 processor" 340 select CPU_SH3 341 select CPU_HAS_DSP 342 help 343 Select SH7710 if you have a SH3-DSP SH7710 CPU. 344 345config CPU_SUBTYPE_SH7712 346 bool "Support SH7712 processor" 347 select CPU_SH3 348 select CPU_HAS_DSP 349 help 350 Select SH7712 if you have a SH3-DSP SH7712 CPU. 351 352config CPU_SUBTYPE_SH7720 353 bool "Support SH7720 processor" 354 select CPU_SH3 355 select CPU_HAS_DSP 356 select SYS_SUPPORTS_CMT 357 select ARCH_WANT_OPTIONAL_GPIOLIB 358 select USB_ARCH_HAS_OHCI 359 select USB_OHCI_SH if USB_OHCI_HCD 360 select PINCTRL 361 help 362 Select SH7720 if you have a SH3-DSP SH7720 CPU. 363 364config CPU_SUBTYPE_SH7721 365 bool "Support SH7721 processor" 366 select CPU_SH3 367 select CPU_HAS_DSP 368 select SYS_SUPPORTS_CMT 369 select USB_ARCH_HAS_OHCI 370 select USB_OHCI_SH if USB_OHCI_HCD 371 help 372 Select SH7721 if you have a SH3-DSP SH7721 CPU. 373 374# SH-4 Processor Support 375 376config CPU_SUBTYPE_SH7750 377 bool "Support SH7750 processor" 378 select CPU_SH4 379 help 380 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU. 381 382config CPU_SUBTYPE_SH7091 383 bool "Support SH7091 processor" 384 select CPU_SH4 385 help 386 Select SH7091 if you have an SH-4 based Sega device (such as 387 the Dreamcast, Naomi, and Naomi 2). 388 389config CPU_SUBTYPE_SH7750R 390 bool "Support SH7750R processor" 391 select CPU_SH4 392 393config CPU_SUBTYPE_SH7750S 394 bool "Support SH7750S processor" 395 select CPU_SH4 396 397config CPU_SUBTYPE_SH7751 398 bool "Support SH7751 processor" 399 select CPU_SH4 400 help 401 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU, 402 or if you have a HD6417751R CPU. 403 404config CPU_SUBTYPE_SH7751R 405 bool "Support SH7751R processor" 406 select CPU_SH4 407 408config CPU_SUBTYPE_SH7760 409 bool "Support SH7760 processor" 410 select CPU_SH4 411 412config CPU_SUBTYPE_SH4_202 413 bool "Support SH4-202 processor" 414 select CPU_SH4 415 416# SH-4A Processor Support 417 418config CPU_SUBTYPE_SH7723 419 bool "Support SH7723 processor" 420 select CPU_SH4A 421 select CPU_SHX2 422 select ARCH_SHMOBILE 423 select ARCH_SPARSEMEM_ENABLE 424 select SYS_SUPPORTS_CMT 425 select ARCH_WANT_OPTIONAL_GPIOLIB 426 select PINCTRL 427 help 428 Select SH7723 if you have an SH-MobileR2 CPU. 429 430config CPU_SUBTYPE_SH7724 431 bool "Support SH7724 processor" 432 select CPU_SH4A 433 select CPU_SHX2 434 select ARCH_SHMOBILE 435 select ARCH_SPARSEMEM_ENABLE 436 select SYS_SUPPORTS_CMT 437 select ARCH_WANT_OPTIONAL_GPIOLIB 438 select PINCTRL 439 help 440 Select SH7724 if you have an SH-MobileR2R CPU. 441 442config CPU_SUBTYPE_SH7734 443 bool "Support SH7734 processor" 444 select CPU_SH4A 445 select CPU_SHX2 446 select ARCH_WANT_OPTIONAL_GPIOLIB 447 select USB_ARCH_HAS_OHCI 448 select USB_ARCH_HAS_EHCI 449 select PINCTRL 450 help 451 Select SH7734 if you have a SH4A SH7734 CPU. 452 453config CPU_SUBTYPE_SH7757 454 bool "Support SH7757 processor" 455 select CPU_SH4A 456 select CPU_SHX2 457 select ARCH_WANT_OPTIONAL_GPIOLIB 458 select USB_ARCH_HAS_OHCI 459 select USB_ARCH_HAS_EHCI 460 select PINCTRL 461 help 462 Select SH7757 if you have a SH4A SH7757 CPU. 463 464config CPU_SUBTYPE_SH7763 465 bool "Support SH7763 processor" 466 select CPU_SH4A 467 select USB_ARCH_HAS_OHCI 468 select USB_OHCI_SH if USB_OHCI_HCD 469 help 470 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU. 471 472config CPU_SUBTYPE_SH7770 473 bool "Support SH7770 processor" 474 select CPU_SH4A 475 476config CPU_SUBTYPE_SH7780 477 bool "Support SH7780 processor" 478 select CPU_SH4A 479 480config CPU_SUBTYPE_SH7785 481 bool "Support SH7785 processor" 482 select CPU_SH4A 483 select CPU_SHX2 484 select ARCH_SPARSEMEM_ENABLE 485 select SYS_SUPPORTS_NUMA 486 select ARCH_WANT_OPTIONAL_GPIOLIB 487 select PINCTRL 488 489config CPU_SUBTYPE_SH7786 490 bool "Support SH7786 processor" 491 select CPU_SH4A 492 select CPU_SHX3 493 select CPU_HAS_PTEAEX 494 select GENERIC_CLOCKEVENTS_BROADCAST if SMP 495 select ARCH_WANT_OPTIONAL_GPIOLIB 496 select USB_ARCH_HAS_OHCI 497 select USB_OHCI_SH if USB_OHCI_HCD 498 select USB_ARCH_HAS_EHCI 499 select USB_EHCI_SH if USB_EHCI_HCD 500 select PINCTRL 501 502config CPU_SUBTYPE_SHX3 503 bool "Support SH-X3 processor" 504 select CPU_SH4A 505 select CPU_SHX3 506 select GENERIC_CLOCKEVENTS_BROADCAST if SMP 507 select ARCH_REQUIRE_GPIOLIB 508 select PINCTRL 509 510# SH4AL-DSP Processor Support 511 512config CPU_SUBTYPE_SH7343 513 bool "Support SH7343 processor" 514 select CPU_SH4AL_DSP 515 select ARCH_SHMOBILE 516 select SYS_SUPPORTS_CMT 517 518config CPU_SUBTYPE_SH7722 519 bool "Support SH7722 processor" 520 select CPU_SH4AL_DSP 521 select CPU_SHX2 522 select ARCH_SHMOBILE 523 select ARCH_SPARSEMEM_ENABLE 524 select SYS_SUPPORTS_NUMA 525 select SYS_SUPPORTS_CMT 526 select ARCH_WANT_OPTIONAL_GPIOLIB 527 select PINCTRL 528 529config CPU_SUBTYPE_SH7366 530 bool "Support SH7366 processor" 531 select CPU_SH4AL_DSP 532 select CPU_SHX2 533 select ARCH_SHMOBILE 534 select ARCH_SPARSEMEM_ENABLE 535 select SYS_SUPPORTS_NUMA 536 select SYS_SUPPORTS_CMT 537 538endchoice 539 540endif 541 542if SUPERH64 543 544choice 545 prompt "Processor sub-type selection" 546 547# SH-5 Processor Support 548 549config CPU_SUBTYPE_SH5_101 550 bool "Support SH5-101 processor" 551 select CPU_SH5 552 553config CPU_SUBTYPE_SH5_103 554 bool "Support SH5-103 processor" 555 select CPU_SH5 556 557endchoice 558 559endif 560 561source "arch/sh/mm/Kconfig" 562 563source "arch/sh/Kconfig.cpu" 564 565source "arch/sh/boards/Kconfig" 566 567menu "Timer and clock configuration" 568 569config SH_TIMER_TMU 570 bool "TMU timer driver" 571 depends on SYS_SUPPORTS_TMU 572 default y 573 help 574 This enables the build of the TMU timer driver. 575 576config SH_TIMER_CMT 577 bool "CMT timer driver" 578 depends on SYS_SUPPORTS_CMT 579 default y 580 help 581 This enables build of the CMT timer driver. 582 583config SH_TIMER_MTU2 584 bool "MTU2 timer driver" 585 depends on SYS_SUPPORTS_MTU2 586 default y 587 help 588 This enables build of the MTU2 timer driver. 589 590config SH_PCLK_FREQ 591 int "Peripheral clock frequency (in Hz)" 592 depends on SH_CLK_CPG_LEGACY 593 default "31250000" if CPU_SUBTYPE_SH7619 594 default "33333333" if CPU_SUBTYPE_SH7770 || \ 595 CPU_SUBTYPE_SH7760 || \ 596 CPU_SUBTYPE_SH7705 || \ 597 CPU_SUBTYPE_SH7203 || \ 598 CPU_SUBTYPE_SH7206 || \ 599 CPU_SUBTYPE_SH7263 || \ 600 CPU_SUBTYPE_MXG 601 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R 602 default "66000000" if CPU_SUBTYPE_SH4_202 603 default "50000000" 604 help 605 This option is used to specify the peripheral clock frequency. 606 This is necessary for determining the reference clock value on 607 platforms lacking an RTC. 608 609config SH_CLK_CPG 610 def_bool y 611 612config SH_CLK_CPG_LEGACY 613 depends on SH_CLK_CPG 614 def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \ 615 !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \ 616 !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \ 617 !CPU_SUBTYPE_SH7269 618 619endmenu 620 621menu "CPU Frequency scaling" 622source "drivers/cpufreq/Kconfig" 623endmenu 624 625source "arch/sh/drivers/Kconfig" 626 627endmenu 628 629menu "Kernel features" 630 631source kernel/Kconfig.hz 632 633config KEXEC 634 bool "kexec system call (EXPERIMENTAL)" 635 depends on SUPERH32 && MMU 636 help 637 kexec is a system call that implements the ability to shutdown your 638 current kernel, and to start another kernel. It is like a reboot 639 but it is independent of the system firmware. And like a reboot 640 you can start any kernel with it, not just Linux. 641 642 The name comes from the similarity to the exec system call. 643 644 It is an ongoing process to be certain the hardware in a machine 645 is properly shutdown, so do not be surprised if this code does not 646 initially work for you. As of this writing the exact hardware 647 interface is strongly in flux, so no good recommendation can be 648 made. 649 650config CRASH_DUMP 651 bool "kernel crash dumps (EXPERIMENTAL)" 652 depends on SUPERH32 && BROKEN_ON_SMP 653 help 654 Generate crash dump after being started by kexec. 655 This should be normally only set in special crash dump kernels 656 which are loaded in the main kernel with kexec-tools into 657 a specially reserved region and then later executed after 658 a crash by kdump/kexec. The crash dump kernel must be compiled 659 to a memory address not used by the main kernel using 660 PHYSICAL_START. 661 662 For more details see Documentation/kdump/kdump.txt 663 664config KEXEC_JUMP 665 bool "kexec jump (EXPERIMENTAL)" 666 depends on SUPERH32 && KEXEC && HIBERNATION 667 help 668 Jump between original kernel and kexeced kernel and invoke 669 code via KEXEC 670 671config PHYSICAL_START 672 hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP) 673 default MEMORY_START 674 ---help--- 675 This gives the physical address where the kernel is loaded 676 and is ordinarily the same as MEMORY_START. 677 678 Different values are primarily used in the case of kexec on panic 679 where the fail safe kernel needs to run at a different address 680 than the panic-ed kernel. 681 682config SECCOMP 683 bool "Enable seccomp to safely compute untrusted bytecode" 684 depends on PROC_FS 685 help 686 This kernel feature is useful for number crunching applications 687 that may need to compute untrusted bytecode during their 688 execution. By using pipes or other transports made available to 689 the process as file descriptors supporting the read/write 690 syscalls, it's possible to isolate those applications in 691 their own address space using seccomp. Once seccomp is 692 enabled via prctl, it cannot be disabled and the task is only 693 allowed to execute a few safe syscalls defined by each seccomp 694 mode. 695 696 If unsure, say N. 697 698config CC_STACKPROTECTOR 699 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)" 700 depends on SUPERH32 701 help 702 This option turns on the -fstack-protector GCC feature. This 703 feature puts, at the beginning of functions, a canary value on 704 the stack just before the return address, and validates 705 the value just before actually returning. Stack based buffer 706 overflows (that need to overwrite this return address) now also 707 overwrite the canary, which gets detected and the attack is then 708 neutralized via a kernel panic. 709 710 This feature requires gcc version 4.2 or above. 711 712config SMP 713 bool "Symmetric multi-processing support" 714 depends on SYS_SUPPORTS_SMP 715 ---help--- 716 This enables support for systems with more than one CPU. If you have 717 a system with only one CPU, like most personal computers, say N. If 718 you have a system with more than one CPU, say Y. 719 720 If you say N here, the kernel will run on single and multiprocessor 721 machines, but will use only one CPU of a multiprocessor machine. If 722 you say Y here, the kernel will run on many, but not all, 723 singleprocessor machines. On a singleprocessor machine, the kernel 724 will run faster if you say N here. 725 726 People using multiprocessor machines who say Y here should also say 727 Y to "Enhanced Real Time Clock Support", below. 728 729 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO 730 available at <http://www.tldp.org/docs.html#howto>. 731 732 If you don't know what to do here, say N. 733 734config NR_CPUS 735 int "Maximum number of CPUs (2-32)" 736 range 2 32 737 depends on SMP 738 default "4" if CPU_SUBTYPE_SHX3 739 default "2" 740 help 741 This allows you to specify the maximum number of CPUs which this 742 kernel will support. The maximum supported value is 32 and the 743 minimum value which makes sense is 2. 744 745 This is purely to save memory - each supported CPU adds 746 approximately eight kilobytes to the kernel image. 747 748config HOTPLUG_CPU 749 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" 750 depends on SMP 751 help 752 Say Y here to experiment with turning CPUs off and on. CPUs 753 can be controlled through /sys/devices/system/cpu. 754 755source "kernel/Kconfig.preempt" 756 757config GUSA 758 def_bool y 759 depends on !SMP && SUPERH32 760 help 761 This enables support for gUSA (general UserSpace Atomicity). 762 This is the default implementation for both UP and non-ll/sc 763 CPUs, and is used by the libc, amongst others. 764 765 For additional information, design information can be found 766 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>. 767 768 This should only be disabled for special cases where alternate 769 atomicity implementations exist. 770 771config GUSA_RB 772 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)" 773 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A) 774 help 775 Enabling this option will allow the kernel to implement some 776 atomic operations using a software implementation of load-locked/ 777 store-conditional (LLSC). On machines which do not have hardware 778 LLSC, this should be more efficient than the other alternative of 779 disabling interrupts around the atomic sequence. 780 781config HW_PERF_EVENTS 782 bool "Enable hardware performance counter support for perf events" 783 depends on PERF_EVENTS && CPU_HAS_PMU 784 default y 785 help 786 Enable hardware performance counter support for perf events. If 787 disabled, perf events will use software events only. 788 789source "drivers/sh/Kconfig" 790 791endmenu 792 793menu "Boot options" 794 795config ZERO_PAGE_OFFSET 796 hex 797 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \ 798 SH_7751_SOLUTION_ENGINE 799 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03 800 default "0x00002000" if PAGE_SIZE_8KB 801 default "0x00001000" 802 help 803 This sets the default offset of zero page. 804 805config BOOT_LINK_OFFSET 806 hex 807 default "0x00210000" if SH_SHMIN 808 default "0x00400000" if SH_CAYMAN 809 default "0x00810000" if SH_7780_SOLUTION_ENGINE 810 default "0x009e0000" if SH_TITAN 811 default "0x01800000" if SH_SDK7780 812 default "0x02000000" if SH_EDOSK7760 813 default "0x00800000" 814 help 815 This option allows you to set the link address offset of the zImage. 816 This can be useful if you are on a board which has a small amount of 817 memory. 818 819config ENTRY_OFFSET 820 hex 821 default "0x00001000" if PAGE_SIZE_4KB 822 default "0x00002000" if PAGE_SIZE_8KB 823 default "0x00004000" if PAGE_SIZE_16KB 824 default "0x00010000" if PAGE_SIZE_64KB 825 default "0x00000000" 826 827config ROMIMAGE_MMCIF 828 bool "Include MMCIF loader in romImage (EXPERIMENTAL)" 829 depends on CPU_SUBTYPE_SH7724 830 help 831 Say Y here to include experimental MMCIF loading code in 832 romImage. With this enabled it is possible to write the romImage 833 kernel image to an MMC card and boot the kernel straight from 834 the reset vector. At reset the processor Mask ROM will load the 835 first part of the romImage which in turn loads the rest the kernel 836 image to RAM using the MMCIF hardware block. 837 838choice 839 prompt "Kernel command line" 840 optional 841 default CMDLINE_OVERWRITE 842 help 843 Setting this option allows the kernel command line arguments 844 to be set. 845 846config CMDLINE_OVERWRITE 847 bool "Overwrite bootloader kernel arguments" 848 help 849 Given string will overwrite any arguments passed in by 850 a bootloader. 851 852config CMDLINE_EXTEND 853 bool "Extend bootloader kernel arguments" 854 help 855 Given string will be concatenated with arguments passed in 856 by a bootloader. 857 858endchoice 859 860config CMDLINE 861 string "Kernel command line arguments string" 862 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND 863 default "console=ttySC1,115200" 864 865endmenu 866 867menu "Bus options" 868 869config SUPERHYWAY 870 tristate "SuperHyway Bus support" 871 depends on CPU_SUBTYPE_SH4_202 872 873config MAPLE 874 bool "Maple Bus support" 875 depends on SH_DREAMCAST 876 help 877 The Maple Bus is SEGA's serial communication bus for peripherals 878 on the Dreamcast. Without this bus support you won't be able to 879 get your Dreamcast keyboard etc to work, so most users 880 probably want to say 'Y' here, unless you are only using the 881 Dreamcast with a serial line terminal or a remote network 882 connection. 883 884config PCI 885 bool "PCI support" 886 depends on SYS_SUPPORTS_PCI 887 select PCI_DOMAINS 888 select GENERIC_PCI_IOMAP 889 select NO_GENERIC_PCI_IOPORT_MAP 890 help 891 Find out whether you have a PCI motherboard. PCI is the name of a 892 bus system, i.e. the way the CPU talks to the other stuff inside 893 your box. If you have PCI, say Y, otherwise N. 894 895config PCI_DOMAINS 896 bool 897 898source "drivers/pci/pcie/Kconfig" 899 900source "drivers/pci/Kconfig" 901 902source "drivers/pcmcia/Kconfig" 903 904source "drivers/pci/hotplug/Kconfig" 905 906endmenu 907 908menu "Executable file formats" 909 910source "fs/Kconfig.binfmt" 911 912endmenu 913 914menu "Power management options (EXPERIMENTAL)" 915 916source "kernel/power/Kconfig" 917 918source "drivers/cpuidle/Kconfig" 919 920endmenu 921 922source "net/Kconfig" 923 924source "drivers/Kconfig" 925 926source "fs/Kconfig" 927 928source "arch/sh/Kconfig.debug" 929 930source "security/Kconfig" 931 932source "crypto/Kconfig" 933 934source "lib/Kconfig" 935