1config SUPERH 2 def_bool y 3 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST 4 select ARCH_MIGHT_HAVE_PC_PARPORT 5 select HAVE_PATA_PLATFORM 6 select CLKDEV_LOOKUP 7 select HAVE_IDE if HAS_IOPORT_MAP 8 select HAVE_MEMBLOCK 9 select HAVE_MEMBLOCK_NODE_MAP 10 select ARCH_DISCARD_MEMBLOCK 11 select HAVE_OPROFILE 12 select HAVE_GENERIC_DMA_COHERENT 13 select HAVE_ARCH_TRACEHOOK 14 select HAVE_DMA_API_DEBUG 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 ARCH_HAS_GCOV_PROFILE_ALL 20 select PERF_USE_VMALLOC 21 select HAVE_DEBUG_KMEMLEAK 22 select HAVE_KERNEL_GZIP 23 select CPU_NO_EFFICIENT_FFS 24 select HAVE_KERNEL_BZIP2 25 select HAVE_KERNEL_LZMA 26 select HAVE_KERNEL_XZ 27 select HAVE_KERNEL_LZO 28 select HAVE_UID16 29 select ARCH_WANT_IPC_PARSE_VERSION 30 select HAVE_SYSCALL_TRACEPOINTS 31 select HAVE_REGS_AND_STACK_ACCESS_API 32 select MAY_HAVE_SPARSE_IRQ 33 select IRQ_FORCED_THREADING 34 select RTC_LIB 35 select GENERIC_ATOMIC64 36 select GENERIC_IRQ_SHOW 37 select GENERIC_SMP_IDLE_THREAD 38 select GENERIC_IDLE_POLL_SETUP 39 select GENERIC_CLOCKEVENTS 40 select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST 41 select GENERIC_STRNCPY_FROM_USER 42 select GENERIC_STRNLEN_USER 43 select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER 44 select MODULES_USE_ELF_RELA 45 select OLD_SIGSUSPEND 46 select OLD_SIGACTION 47 select HAVE_ARCH_AUDITSYSCALL 48 select HAVE_NMI 49 help 50 The SuperH is a RISC processor targeted for use in embedded systems 51 and consumer electronics; it was also used in the Sega Dreamcast 52 gaming console. The SuperH port has a home page at 53 <http://www.linux-sh.org/>. 54 55config SUPERH32 56 def_bool ARCH = "sh" 57 select HAVE_KPROBES 58 select HAVE_KRETPROBES 59 select HAVE_IOREMAP_PROT if MMU && !X2TLB 60 select HAVE_FUNCTION_TRACER 61 select HAVE_FTRACE_MCOUNT_RECORD 62 select HAVE_DYNAMIC_FTRACE 63 select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE 64 select ARCH_WANT_IPC_PARSE_VERSION 65 select HAVE_FUNCTION_GRAPH_TRACER 66 select HAVE_ARCH_KGDB 67 select HAVE_HW_BREAKPOINT 68 select HAVE_MIXED_BREAKPOINTS_REGS 69 select PERF_EVENTS 70 select ARCH_HIBERNATION_POSSIBLE if MMU 71 select SPARSE_IRQ 72 select HAVE_CC_STACKPROTECTOR 73 74config SUPERH64 75 def_bool ARCH = "sh64" 76 select HAVE_EXIT_THREAD 77 select KALLSYMS 78 79config ARCH_DEFCONFIG 80 string 81 default "arch/sh/configs/shx3_defconfig" if SUPERH32 82 default "arch/sh/configs/cayman_defconfig" if SUPERH64 83 84config RWSEM_GENERIC_SPINLOCK 85 def_bool y 86 87config RWSEM_XCHGADD_ALGORITHM 88 bool 89 90config GENERIC_BUG 91 def_bool y 92 depends on BUG && SUPERH32 93 94config GENERIC_CSUM 95 def_bool y 96 depends on SUPERH64 97 98config GENERIC_HWEIGHT 99 def_bool y 100 101config GENERIC_CALIBRATE_DELAY 102 bool 103 104config GENERIC_LOCKBREAK 105 def_bool y 106 depends on SMP && PREEMPT 107 108config ARCH_SUSPEND_POSSIBLE 109 def_bool n 110 111config ARCH_HIBERNATION_POSSIBLE 112 def_bool n 113 114config SYS_SUPPORTS_APM_EMULATION 115 bool 116 select ARCH_SUSPEND_POSSIBLE 117 118config SYS_SUPPORTS_HUGETLBFS 119 bool 120 121config SYS_SUPPORTS_SMP 122 bool 123 124config SYS_SUPPORTS_NUMA 125 bool 126 127config SYS_SUPPORTS_PCI 128 bool 129 130config STACKTRACE_SUPPORT 131 def_bool y 132 133config LOCKDEP_SUPPORT 134 def_bool y 135 136config ARCH_HAS_ILOG2_U32 137 def_bool n 138 139config ARCH_HAS_ILOG2_U64 140 def_bool n 141 142config NO_IOPORT_MAP 143 def_bool !PCI 144 depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN && \ 145 !SH_HP6XX && !SH_SOLUTION_ENGINE 146 147config IO_TRAPPED 148 bool 149 150config SWAP_IO_SPACE 151 bool 152 153config DMA_COHERENT 154 bool 155 156config DMA_NONCOHERENT 157 def_bool !DMA_COHERENT 158 159config NEED_DMA_MAP_STATE 160 def_bool DMA_NONCOHERENT 161 162config NEED_SG_DMA_LENGTH 163 def_bool y 164 165config PGTABLE_LEVELS 166 default 3 if X2TLB 167 default 2 168 169source "init/Kconfig" 170 171source "kernel/Kconfig.freezer" 172 173menu "System type" 174 175# 176# Processor families 177# 178config CPU_SH2 179 bool 180 select SH_INTC 181 182config CPU_SH2A 183 bool 184 select CPU_SH2 185 select UNCACHED_MAPPING 186 187config CPU_SH3 188 bool 189 select CPU_HAS_INTEVT 190 select CPU_HAS_SR_RB 191 select SH_INTC 192 select SYS_SUPPORTS_SH_TMU 193 194config CPU_SH4 195 bool 196 select CPU_HAS_INTEVT 197 select CPU_HAS_SR_RB 198 select CPU_HAS_FPU if !CPU_SH4AL_DSP 199 select SH_INTC 200 select SYS_SUPPORTS_SH_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_SH_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 232config CPU_HAS_PMU 233 depends on CPU_SH4 || CPU_SH4A 234 default y 235 bool 236 237if SUPERH32 238 239choice 240 prompt "Processor sub-type selection" 241 242# 243# Processor subtypes 244# 245 246# SH-2 Processor Support 247 248config CPU_SUBTYPE_SH7619 249 bool "Support SH7619 processor" 250 select CPU_SH2 251 select SYS_SUPPORTS_SH_CMT 252 253# SH-2A Processor Support 254 255config CPU_SUBTYPE_SH7201 256 bool "Support SH7201 processor" 257 select CPU_SH2A 258 select CPU_HAS_FPU 259 select SYS_SUPPORTS_SH_MTU2 260 261config CPU_SUBTYPE_SH7203 262 bool "Support SH7203 processor" 263 select CPU_SH2A 264 select CPU_HAS_FPU 265 select SYS_SUPPORTS_SH_CMT 266 select SYS_SUPPORTS_SH_MTU2 267 select ARCH_WANT_OPTIONAL_GPIOLIB 268 select PINCTRL 269 270config CPU_SUBTYPE_SH7206 271 bool "Support SH7206 processor" 272 select CPU_SH2A 273 select SYS_SUPPORTS_SH_CMT 274 select SYS_SUPPORTS_SH_MTU2 275 276config CPU_SUBTYPE_SH7263 277 bool "Support SH7263 processor" 278 select CPU_SH2A 279 select CPU_HAS_FPU 280 select SYS_SUPPORTS_SH_CMT 281 select SYS_SUPPORTS_SH_MTU2 282 283config CPU_SUBTYPE_SH7264 284 bool "Support SH7264 processor" 285 select CPU_SH2A 286 select CPU_HAS_FPU 287 select SYS_SUPPORTS_SH_CMT 288 select SYS_SUPPORTS_SH_MTU2 289 select PINCTRL 290 291config CPU_SUBTYPE_SH7269 292 bool "Support SH7269 processor" 293 select CPU_SH2A 294 select CPU_HAS_FPU 295 select SYS_SUPPORTS_SH_CMT 296 select SYS_SUPPORTS_SH_MTU2 297 select PINCTRL 298 299config CPU_SUBTYPE_MXG 300 bool "Support MX-G processor" 301 select CPU_SH2A 302 select SYS_SUPPORTS_SH_MTU2 303 help 304 Select MX-G if running on an R8A03022BG part. 305 306# SH-3 Processor Support 307 308config CPU_SUBTYPE_SH7705 309 bool "Support SH7705 processor" 310 select CPU_SH3 311 312config CPU_SUBTYPE_SH7706 313 bool "Support SH7706 processor" 314 select CPU_SH3 315 help 316 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU. 317 318config CPU_SUBTYPE_SH7707 319 bool "Support SH7707 processor" 320 select CPU_SH3 321 help 322 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU. 323 324config CPU_SUBTYPE_SH7708 325 bool "Support SH7708 processor" 326 select CPU_SH3 327 help 328 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or 329 if you have a 100 Mhz SH-3 HD6417708R CPU. 330 331config CPU_SUBTYPE_SH7709 332 bool "Support SH7709 processor" 333 select CPU_SH3 334 help 335 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU. 336 337config CPU_SUBTYPE_SH7710 338 bool "Support SH7710 processor" 339 select CPU_SH3 340 select CPU_HAS_DSP 341 help 342 Select SH7710 if you have a SH3-DSP SH7710 CPU. 343 344config CPU_SUBTYPE_SH7712 345 bool "Support SH7712 processor" 346 select CPU_SH3 347 select CPU_HAS_DSP 348 help 349 Select SH7712 if you have a SH3-DSP SH7712 CPU. 350 351config CPU_SUBTYPE_SH7720 352 bool "Support SH7720 processor" 353 select CPU_SH3 354 select CPU_HAS_DSP 355 select SYS_SUPPORTS_SH_CMT 356 select ARCH_WANT_OPTIONAL_GPIOLIB 357 select USB_OHCI_SH if USB_OHCI_HCD 358 select PINCTRL 359 help 360 Select SH7720 if you have a SH3-DSP SH7720 CPU. 361 362config CPU_SUBTYPE_SH7721 363 bool "Support SH7721 processor" 364 select CPU_SH3 365 select CPU_HAS_DSP 366 select SYS_SUPPORTS_SH_CMT 367 select USB_OHCI_SH if USB_OHCI_HCD 368 help 369 Select SH7721 if you have a SH3-DSP SH7721 CPU. 370 371# SH-4 Processor Support 372 373config CPU_SUBTYPE_SH7750 374 bool "Support SH7750 processor" 375 select CPU_SH4 376 help 377 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU. 378 379config CPU_SUBTYPE_SH7091 380 bool "Support SH7091 processor" 381 select CPU_SH4 382 help 383 Select SH7091 if you have an SH-4 based Sega device (such as 384 the Dreamcast, Naomi, and Naomi 2). 385 386config CPU_SUBTYPE_SH7750R 387 bool "Support SH7750R processor" 388 select CPU_SH4 389 390config CPU_SUBTYPE_SH7750S 391 bool "Support SH7750S processor" 392 select CPU_SH4 393 394config CPU_SUBTYPE_SH7751 395 bool "Support SH7751 processor" 396 select CPU_SH4 397 help 398 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU, 399 or if you have a HD6417751R CPU. 400 401config CPU_SUBTYPE_SH7751R 402 bool "Support SH7751R processor" 403 select CPU_SH4 404 405config CPU_SUBTYPE_SH7760 406 bool "Support SH7760 processor" 407 select CPU_SH4 408 409config CPU_SUBTYPE_SH4_202 410 bool "Support SH4-202 processor" 411 select CPU_SH4 412 413# SH-4A Processor Support 414 415config CPU_SUBTYPE_SH7723 416 bool "Support SH7723 processor" 417 select CPU_SH4A 418 select CPU_SHX2 419 select ARCH_SHMOBILE 420 select ARCH_SPARSEMEM_ENABLE 421 select SYS_SUPPORTS_SH_CMT 422 select ARCH_WANT_OPTIONAL_GPIOLIB 423 select PINCTRL 424 help 425 Select SH7723 if you have an SH-MobileR2 CPU. 426 427config CPU_SUBTYPE_SH7724 428 bool "Support SH7724 processor" 429 select CPU_SH4A 430 select CPU_SHX2 431 select ARCH_SHMOBILE 432 select ARCH_SPARSEMEM_ENABLE 433 select SYS_SUPPORTS_SH_CMT 434 select ARCH_WANT_OPTIONAL_GPIOLIB 435 select PINCTRL 436 help 437 Select SH7724 if you have an SH-MobileR2R CPU. 438 439config CPU_SUBTYPE_SH7734 440 bool "Support SH7734 processor" 441 select CPU_SH4A 442 select CPU_SHX2 443 select ARCH_WANT_OPTIONAL_GPIOLIB 444 select PINCTRL 445 help 446 Select SH7734 if you have a SH4A SH7734 CPU. 447 448config CPU_SUBTYPE_SH7757 449 bool "Support SH7757 processor" 450 select CPU_SH4A 451 select CPU_SHX2 452 select ARCH_WANT_OPTIONAL_GPIOLIB 453 select PINCTRL 454 help 455 Select SH7757 if you have a SH4A SH7757 CPU. 456 457config CPU_SUBTYPE_SH7763 458 bool "Support SH7763 processor" 459 select CPU_SH4A 460 select USB_OHCI_SH if USB_OHCI_HCD 461 help 462 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU. 463 464config CPU_SUBTYPE_SH7770 465 bool "Support SH7770 processor" 466 select CPU_SH4A 467 468config CPU_SUBTYPE_SH7780 469 bool "Support SH7780 processor" 470 select CPU_SH4A 471 472config CPU_SUBTYPE_SH7785 473 bool "Support SH7785 processor" 474 select CPU_SH4A 475 select CPU_SHX2 476 select ARCH_SPARSEMEM_ENABLE 477 select SYS_SUPPORTS_NUMA 478 select ARCH_WANT_OPTIONAL_GPIOLIB 479 select PINCTRL 480 481config CPU_SUBTYPE_SH7786 482 bool "Support SH7786 processor" 483 select CPU_SH4A 484 select CPU_SHX3 485 select CPU_HAS_PTEAEX 486 select GENERIC_CLOCKEVENTS_BROADCAST if SMP 487 select ARCH_WANT_OPTIONAL_GPIOLIB 488 select USB_OHCI_SH if USB_OHCI_HCD 489 select USB_EHCI_SH if USB_EHCI_HCD 490 select PINCTRL 491 492config CPU_SUBTYPE_SHX3 493 bool "Support SH-X3 processor" 494 select CPU_SH4A 495 select CPU_SHX3 496 select GENERIC_CLOCKEVENTS_BROADCAST if SMP 497 select ARCH_REQUIRE_GPIOLIB 498 select PINCTRL 499 500# SH4AL-DSP Processor Support 501 502config CPU_SUBTYPE_SH7343 503 bool "Support SH7343 processor" 504 select CPU_SH4AL_DSP 505 select ARCH_SHMOBILE 506 select SYS_SUPPORTS_SH_CMT 507 508config CPU_SUBTYPE_SH7722 509 bool "Support SH7722 processor" 510 select CPU_SH4AL_DSP 511 select CPU_SHX2 512 select ARCH_SHMOBILE 513 select ARCH_SPARSEMEM_ENABLE 514 select SYS_SUPPORTS_NUMA 515 select SYS_SUPPORTS_SH_CMT 516 select ARCH_WANT_OPTIONAL_GPIOLIB 517 select PINCTRL 518 519config CPU_SUBTYPE_SH7366 520 bool "Support SH7366 processor" 521 select CPU_SH4AL_DSP 522 select CPU_SHX2 523 select ARCH_SHMOBILE 524 select ARCH_SPARSEMEM_ENABLE 525 select SYS_SUPPORTS_NUMA 526 select SYS_SUPPORTS_SH_CMT 527 528endchoice 529 530endif 531 532if SUPERH64 533 534choice 535 prompt "Processor sub-type selection" 536 537# SH-5 Processor Support 538 539config CPU_SUBTYPE_SH5_101 540 bool "Support SH5-101 processor" 541 select CPU_SH5 542 543config CPU_SUBTYPE_SH5_103 544 bool "Support SH5-103 processor" 545 select CPU_SH5 546 547endchoice 548 549endif 550 551source "arch/sh/mm/Kconfig" 552 553source "arch/sh/Kconfig.cpu" 554 555source "arch/sh/boards/Kconfig" 556 557menu "Timer and clock configuration" 558 559config SH_PCLK_FREQ 560 int "Peripheral clock frequency (in Hz)" 561 depends on SH_CLK_CPG_LEGACY 562 default "31250000" if CPU_SUBTYPE_SH7619 563 default "33333333" if CPU_SUBTYPE_SH7770 || \ 564 CPU_SUBTYPE_SH7760 || \ 565 CPU_SUBTYPE_SH7705 || \ 566 CPU_SUBTYPE_SH7203 || \ 567 CPU_SUBTYPE_SH7206 || \ 568 CPU_SUBTYPE_SH7263 || \ 569 CPU_SUBTYPE_MXG 570 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R 571 default "66000000" if CPU_SUBTYPE_SH4_202 572 default "50000000" 573 help 574 This option is used to specify the peripheral clock frequency. 575 This is necessary for determining the reference clock value on 576 platforms lacking an RTC. 577 578config SH_CLK_CPG 579 def_bool y 580 581config SH_CLK_CPG_LEGACY 582 depends on SH_CLK_CPG 583 def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \ 584 !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \ 585 !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \ 586 !CPU_SUBTYPE_SH7269 587 588endmenu 589 590menu "CPU Frequency scaling" 591source "drivers/cpufreq/Kconfig" 592endmenu 593 594source "arch/sh/drivers/Kconfig" 595 596endmenu 597 598menu "Kernel features" 599 600source kernel/Kconfig.hz 601 602config KEXEC 603 bool "kexec system call (EXPERIMENTAL)" 604 depends on SUPERH32 && MMU 605 select KEXEC_CORE 606 help 607 kexec is a system call that implements the ability to shutdown your 608 current kernel, and to start another kernel. It is like a reboot 609 but it is independent of the system firmware. And like a reboot 610 you can start any kernel with it, not just Linux. 611 612 The name comes from the similarity to the exec system call. 613 614 It is an ongoing process to be certain the hardware in a machine 615 is properly shutdown, so do not be surprised if this code does not 616 initially work for you. As of this writing the exact hardware 617 interface is strongly in flux, so no good recommendation can be 618 made. 619 620config CRASH_DUMP 621 bool "kernel crash dumps (EXPERIMENTAL)" 622 depends on SUPERH32 && BROKEN_ON_SMP 623 help 624 Generate crash dump after being started by kexec. 625 This should be normally only set in special crash dump kernels 626 which are loaded in the main kernel with kexec-tools into 627 a specially reserved region and then later executed after 628 a crash by kdump/kexec. The crash dump kernel must be compiled 629 to a memory address not used by the main kernel using 630 PHYSICAL_START. 631 632 For more details see Documentation/kdump/kdump.txt 633 634config KEXEC_JUMP 635 bool "kexec jump (EXPERIMENTAL)" 636 depends on SUPERH32 && KEXEC && HIBERNATION 637 help 638 Jump between original kernel and kexeced kernel and invoke 639 code via KEXEC 640 641config PHYSICAL_START 642 hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP) 643 default MEMORY_START 644 ---help--- 645 This gives the physical address where the kernel is loaded 646 and is ordinarily the same as MEMORY_START. 647 648 Different values are primarily used in the case of kexec on panic 649 where the fail safe kernel needs to run at a different address 650 than the panic-ed kernel. 651 652config SECCOMP 653 bool "Enable seccomp to safely compute untrusted bytecode" 654 depends on PROC_FS 655 help 656 This kernel feature is useful for number crunching applications 657 that may need to compute untrusted bytecode during their 658 execution. By using pipes or other transports made available to 659 the process as file descriptors supporting the read/write 660 syscalls, it's possible to isolate those applications in 661 their own address space using seccomp. Once seccomp is 662 enabled via prctl, it cannot be disabled and the task is only 663 allowed to execute a few safe syscalls defined by each seccomp 664 mode. 665 666 If unsure, say N. 667 668config SMP 669 bool "Symmetric multi-processing support" 670 depends on SYS_SUPPORTS_SMP 671 ---help--- 672 This enables support for systems with more than one CPU. If you have 673 a system with only one CPU, say N. If you have a system with more 674 than one CPU, say Y. 675 676 If you say N here, the kernel will run on uni- and multiprocessor 677 machines, but will use only one CPU of a multiprocessor machine. If 678 you say Y here, the kernel will run on many, but not all, 679 uniprocessor machines. On a uniprocessor machine, the kernel 680 will run faster if you say N here. 681 682 People using multiprocessor machines who say Y here should also say 683 Y to "Enhanced Real Time Clock Support", below. 684 685 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO 686 available at <http://www.tldp.org/docs.html#howto>. 687 688 If you don't know what to do here, say N. 689 690config NR_CPUS 691 int "Maximum number of CPUs (2-32)" 692 range 2 32 693 depends on SMP 694 default "4" if CPU_SUBTYPE_SHX3 695 default "2" 696 help 697 This allows you to specify the maximum number of CPUs which this 698 kernel will support. The maximum supported value is 32 and the 699 minimum value which makes sense is 2. 700 701 This is purely to save memory - each supported CPU adds 702 approximately eight kilobytes to the kernel image. 703 704config HOTPLUG_CPU 705 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" 706 depends on SMP 707 help 708 Say Y here to experiment with turning CPUs off and on. CPUs 709 can be controlled through /sys/devices/system/cpu. 710 711source "kernel/Kconfig.preempt" 712 713config GUSA 714 def_bool y 715 depends on !SMP && SUPERH32 716 help 717 This enables support for gUSA (general UserSpace Atomicity). 718 This is the default implementation for both UP and non-ll/sc 719 CPUs, and is used by the libc, amongst others. 720 721 For additional information, design information can be found 722 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>. 723 724 This should only be disabled for special cases where alternate 725 atomicity implementations exist. 726 727config GUSA_RB 728 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)" 729 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A) 730 help 731 Enabling this option will allow the kernel to implement some 732 atomic operations using a software implementation of load-locked/ 733 store-conditional (LLSC). On machines which do not have hardware 734 LLSC, this should be more efficient than the other alternative of 735 disabling interrupts around the atomic sequence. 736 737config HW_PERF_EVENTS 738 bool "Enable hardware performance counter support for perf events" 739 depends on PERF_EVENTS && CPU_HAS_PMU 740 default y 741 help 742 Enable hardware performance counter support for perf events. If 743 disabled, perf events will use software events only. 744 745source "drivers/sh/Kconfig" 746 747endmenu 748 749menu "Boot options" 750 751config ZERO_PAGE_OFFSET 752 hex 753 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \ 754 SH_7751_SOLUTION_ENGINE 755 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03 756 default "0x00002000" if PAGE_SIZE_8KB 757 default "0x00001000" 758 help 759 This sets the default offset of zero page. 760 761config BOOT_LINK_OFFSET 762 hex 763 default "0x00210000" if SH_SHMIN 764 default "0x00400000" if SH_CAYMAN 765 default "0x00810000" if SH_7780_SOLUTION_ENGINE 766 default "0x009e0000" if SH_TITAN 767 default "0x01800000" if SH_SDK7780 768 default "0x02000000" if SH_EDOSK7760 769 default "0x00800000" 770 help 771 This option allows you to set the link address offset of the zImage. 772 This can be useful if you are on a board which has a small amount of 773 memory. 774 775config ENTRY_OFFSET 776 hex 777 default "0x00001000" if PAGE_SIZE_4KB 778 default "0x00002000" if PAGE_SIZE_8KB 779 default "0x00004000" if PAGE_SIZE_16KB 780 default "0x00010000" if PAGE_SIZE_64KB 781 default "0x00000000" 782 783config ROMIMAGE_MMCIF 784 bool "Include MMCIF loader in romImage (EXPERIMENTAL)" 785 depends on CPU_SUBTYPE_SH7724 786 help 787 Say Y here to include experimental MMCIF loading code in 788 romImage. With this enabled it is possible to write the romImage 789 kernel image to an MMC card and boot the kernel straight from 790 the reset vector. At reset the processor Mask ROM will load the 791 first part of the romImage which in turn loads the rest the kernel 792 image to RAM using the MMCIF hardware block. 793 794choice 795 prompt "Kernel command line" 796 optional 797 default CMDLINE_OVERWRITE 798 help 799 Setting this option allows the kernel command line arguments 800 to be set. 801 802config CMDLINE_OVERWRITE 803 bool "Overwrite bootloader kernel arguments" 804 help 805 Given string will overwrite any arguments passed in by 806 a bootloader. 807 808config CMDLINE_EXTEND 809 bool "Extend bootloader kernel arguments" 810 help 811 Given string will be concatenated with arguments passed in 812 by a bootloader. 813 814endchoice 815 816config CMDLINE 817 string "Kernel command line arguments string" 818 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND 819 default "console=ttySC1,115200" 820 821endmenu 822 823menu "Bus options" 824 825config SUPERHYWAY 826 tristate "SuperHyway Bus support" 827 depends on CPU_SUBTYPE_SH4_202 828 829config MAPLE 830 bool "Maple Bus support" 831 depends on SH_DREAMCAST 832 help 833 The Maple Bus is SEGA's serial communication bus for peripherals 834 on the Dreamcast. Without this bus support you won't be able to 835 get your Dreamcast keyboard etc to work, so most users 836 probably want to say 'Y' here, unless you are only using the 837 Dreamcast with a serial line terminal or a remote network 838 connection. 839 840config PCI 841 bool "PCI support" 842 depends on SYS_SUPPORTS_PCI 843 select PCI_DOMAINS 844 select GENERIC_PCI_IOMAP 845 select NO_GENERIC_PCI_IOPORT_MAP 846 help 847 Find out whether you have a PCI motherboard. PCI is the name of a 848 bus system, i.e. the way the CPU talks to the other stuff inside 849 your box. If you have PCI, say Y, otherwise N. 850 851config PCI_DOMAINS 852 bool 853 854source "drivers/pci/Kconfig" 855 856source "drivers/pcmcia/Kconfig" 857 858endmenu 859 860menu "Executable file formats" 861 862source "fs/Kconfig.binfmt" 863 864endmenu 865 866menu "Power management options (EXPERIMENTAL)" 867 868source "kernel/power/Kconfig" 869 870source "drivers/cpuidle/Kconfig" 871 872endmenu 873 874source "net/Kconfig" 875 876source "drivers/Kconfig" 877 878source "fs/Kconfig" 879 880source "arch/sh/Kconfig.debug" 881 882source "security/Kconfig" 883 884source "crypto/Kconfig" 885 886source "lib/Kconfig" 887