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_MAP 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 select HAVE_ARCH_AUDITSYSCALL 46 help 47 The SuperH is a RISC processor targeted for use in embedded systems 48 and consumer electronics; it was also used in the Sega Dreamcast 49 gaming console. The SuperH port has a home page at 50 <http://www.linux-sh.org/>. 51 52config SUPERH32 53 def_bool ARCH = "sh" 54 select HAVE_KPROBES 55 select HAVE_KRETPROBES 56 select HAVE_IOREMAP_PROT if MMU && !X2TLB 57 select HAVE_FUNCTION_TRACER 58 select HAVE_FTRACE_MCOUNT_RECORD 59 select HAVE_DYNAMIC_FTRACE 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 select HAVE_CC_STACKPROTECTOR 70 71config SUPERH64 72 def_bool ARCH = "sh64" 73 select KALLSYMS 74 75config ARCH_DEFCONFIG 76 string 77 default "arch/sh/configs/shx3_defconfig" if SUPERH32 78 default "arch/sh/configs/cayman_defconfig" if SUPERH64 79 80config RWSEM_GENERIC_SPINLOCK 81 def_bool y 82 83config RWSEM_XCHGADD_ALGORITHM 84 bool 85 86config GENERIC_BUG 87 def_bool y 88 depends on BUG && SUPERH32 89 90config GENERIC_CSUM 91 def_bool y 92 depends on SUPERH64 93 94config GENERIC_HWEIGHT 95 def_bool y 96 97config GENERIC_CALIBRATE_DELAY 98 bool 99 100config GENERIC_LOCKBREAK 101 def_bool y 102 depends on SMP && PREEMPT 103 104config ARCH_SUSPEND_POSSIBLE 105 def_bool n 106 107config ARCH_HIBERNATION_POSSIBLE 108 def_bool n 109 110config SYS_SUPPORTS_APM_EMULATION 111 bool 112 select ARCH_SUSPEND_POSSIBLE 113 114config SYS_SUPPORTS_HUGETLBFS 115 bool 116 117config SYS_SUPPORTS_SMP 118 bool 119 120config SYS_SUPPORTS_NUMA 121 bool 122 123config SYS_SUPPORTS_PCI 124 bool 125 126config STACKTRACE_SUPPORT 127 def_bool y 128 129config LOCKDEP_SUPPORT 130 def_bool y 131 132config HAVE_LATENCYTOP_SUPPORT 133 def_bool y 134 135config ARCH_HAS_ILOG2_U32 136 def_bool n 137 138config ARCH_HAS_ILOG2_U64 139 def_bool n 140 141config NO_IOPORT_MAP 142 def_bool !PCI 143 depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN && \ 144 !SH_HP6XX && !SH_SOLUTION_ENGINE 145 146config IO_TRAPPED 147 bool 148 149config SWAP_IO_SPACE 150 bool 151 152config DMA_COHERENT 153 bool 154 155config DMA_NONCOHERENT 156 def_bool !DMA_COHERENT 157 158config NEED_DMA_MAP_STATE 159 def_bool DMA_NONCOHERENT 160 161config NEED_SG_DMA_LENGTH 162 def_bool y 163 164source "init/Kconfig" 165 166source "kernel/Kconfig.freezer" 167 168menu "System type" 169 170# 171# Processor families 172# 173config CPU_SH2 174 bool 175 176config CPU_SH2A 177 bool 178 select CPU_SH2 179 select UNCACHED_MAPPING 180 181config CPU_SH3 182 bool 183 select CPU_HAS_INTEVT 184 select CPU_HAS_SR_RB 185 select SYS_SUPPORTS_SH_TMU 186 187config CPU_SH4 188 bool 189 select CPU_HAS_INTEVT 190 select CPU_HAS_SR_RB 191 select CPU_HAS_FPU if !CPU_SH4AL_DSP 192 select SYS_SUPPORTS_SH_TMU 193 select SYS_SUPPORTS_HUGETLBFS if MMU 194 195config CPU_SH4A 196 bool 197 select CPU_SH4 198 199config CPU_SH4AL_DSP 200 bool 201 select CPU_SH4A 202 select CPU_HAS_DSP 203 204config CPU_SH5 205 bool 206 select CPU_HAS_FPU 207 select SYS_SUPPORTS_SH_TMU 208 select SYS_SUPPORTS_HUGETLBFS if MMU 209 210config CPU_SHX2 211 bool 212 213config CPU_SHX3 214 bool 215 select DMA_COHERENT 216 select SYS_SUPPORTS_SMP 217 select SYS_SUPPORTS_NUMA 218 219config ARCH_SHMOBILE 220 bool 221 select ARCH_SUSPEND_POSSIBLE 222 select PM 223 select PM_RUNTIME 224 225config CPU_HAS_PMU 226 depends on CPU_SH4 || CPU_SH4A 227 default y 228 bool 229 230if SUPERH32 231 232choice 233 prompt "Processor sub-type selection" 234 235# 236# Processor subtypes 237# 238 239# SH-2 Processor Support 240 241config CPU_SUBTYPE_SH7619 242 bool "Support SH7619 processor" 243 select CPU_SH2 244 select SYS_SUPPORTS_SH_CMT 245 246# SH-2A Processor Support 247 248config CPU_SUBTYPE_SH7201 249 bool "Support SH7201 processor" 250 select CPU_SH2A 251 select CPU_HAS_FPU 252 select SYS_SUPPORTS_SH_MTU2 253 254config CPU_SUBTYPE_SH7203 255 bool "Support SH7203 processor" 256 select CPU_SH2A 257 select CPU_HAS_FPU 258 select SYS_SUPPORTS_SH_CMT 259 select SYS_SUPPORTS_SH_MTU2 260 select ARCH_WANT_OPTIONAL_GPIOLIB 261 select PINCTRL 262 263config CPU_SUBTYPE_SH7206 264 bool "Support SH7206 processor" 265 select CPU_SH2A 266 select SYS_SUPPORTS_SH_CMT 267 select SYS_SUPPORTS_SH_MTU2 268 269config CPU_SUBTYPE_SH7263 270 bool "Support SH7263 processor" 271 select CPU_SH2A 272 select CPU_HAS_FPU 273 select SYS_SUPPORTS_SH_CMT 274 select SYS_SUPPORTS_SH_MTU2 275 276config CPU_SUBTYPE_SH7264 277 bool "Support SH7264 processor" 278 select CPU_SH2A 279 select CPU_HAS_FPU 280 select SYS_SUPPORTS_SH_CMT 281 select SYS_SUPPORTS_SH_MTU2 282 select PINCTRL 283 284config CPU_SUBTYPE_SH7269 285 bool "Support SH7269 processor" 286 select CPU_SH2A 287 select CPU_HAS_FPU 288 select SYS_SUPPORTS_SH_CMT 289 select SYS_SUPPORTS_SH_MTU2 290 select PINCTRL 291 292config CPU_SUBTYPE_MXG 293 bool "Support MX-G processor" 294 select CPU_SH2A 295 select SYS_SUPPORTS_SH_MTU2 296 help 297 Select MX-G if running on an R8A03022BG part. 298 299# SH-3 Processor Support 300 301config CPU_SUBTYPE_SH7705 302 bool "Support SH7705 processor" 303 select CPU_SH3 304 305config CPU_SUBTYPE_SH7706 306 bool "Support SH7706 processor" 307 select CPU_SH3 308 help 309 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU. 310 311config CPU_SUBTYPE_SH7707 312 bool "Support SH7707 processor" 313 select CPU_SH3 314 help 315 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU. 316 317config CPU_SUBTYPE_SH7708 318 bool "Support SH7708 processor" 319 select CPU_SH3 320 help 321 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or 322 if you have a 100 Mhz SH-3 HD6417708R CPU. 323 324config CPU_SUBTYPE_SH7709 325 bool "Support SH7709 processor" 326 select CPU_SH3 327 help 328 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU. 329 330config CPU_SUBTYPE_SH7710 331 bool "Support SH7710 processor" 332 select CPU_SH3 333 select CPU_HAS_DSP 334 help 335 Select SH7710 if you have a SH3-DSP SH7710 CPU. 336 337config CPU_SUBTYPE_SH7712 338 bool "Support SH7712 processor" 339 select CPU_SH3 340 select CPU_HAS_DSP 341 help 342 Select SH7712 if you have a SH3-DSP SH7712 CPU. 343 344config CPU_SUBTYPE_SH7720 345 bool "Support SH7720 processor" 346 select CPU_SH3 347 select CPU_HAS_DSP 348 select SYS_SUPPORTS_SH_CMT 349 select ARCH_WANT_OPTIONAL_GPIOLIB 350 select USB_OHCI_SH if USB_OHCI_HCD 351 select PINCTRL 352 help 353 Select SH7720 if you have a SH3-DSP SH7720 CPU. 354 355config CPU_SUBTYPE_SH7721 356 bool "Support SH7721 processor" 357 select CPU_SH3 358 select CPU_HAS_DSP 359 select SYS_SUPPORTS_SH_CMT 360 select USB_OHCI_SH if USB_OHCI_HCD 361 help 362 Select SH7721 if you have a SH3-DSP SH7721 CPU. 363 364# SH-4 Processor Support 365 366config CPU_SUBTYPE_SH7750 367 bool "Support SH7750 processor" 368 select CPU_SH4 369 help 370 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU. 371 372config CPU_SUBTYPE_SH7091 373 bool "Support SH7091 processor" 374 select CPU_SH4 375 help 376 Select SH7091 if you have an SH-4 based Sega device (such as 377 the Dreamcast, Naomi, and Naomi 2). 378 379config CPU_SUBTYPE_SH7750R 380 bool "Support SH7750R processor" 381 select CPU_SH4 382 383config CPU_SUBTYPE_SH7750S 384 bool "Support SH7750S processor" 385 select CPU_SH4 386 387config CPU_SUBTYPE_SH7751 388 bool "Support SH7751 processor" 389 select CPU_SH4 390 help 391 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU, 392 or if you have a HD6417751R CPU. 393 394config CPU_SUBTYPE_SH7751R 395 bool "Support SH7751R processor" 396 select CPU_SH4 397 398config CPU_SUBTYPE_SH7760 399 bool "Support SH7760 processor" 400 select CPU_SH4 401 402config CPU_SUBTYPE_SH4_202 403 bool "Support SH4-202 processor" 404 select CPU_SH4 405 406# SH-4A Processor Support 407 408config CPU_SUBTYPE_SH7723 409 bool "Support SH7723 processor" 410 select CPU_SH4A 411 select CPU_SHX2 412 select ARCH_SHMOBILE 413 select ARCH_SPARSEMEM_ENABLE 414 select SYS_SUPPORTS_SH_CMT 415 select ARCH_WANT_OPTIONAL_GPIOLIB 416 select PINCTRL 417 help 418 Select SH7723 if you have an SH-MobileR2 CPU. 419 420config CPU_SUBTYPE_SH7724 421 bool "Support SH7724 processor" 422 select CPU_SH4A 423 select CPU_SHX2 424 select ARCH_SHMOBILE 425 select ARCH_SPARSEMEM_ENABLE 426 select SYS_SUPPORTS_SH_CMT 427 select ARCH_WANT_OPTIONAL_GPIOLIB 428 select PINCTRL 429 help 430 Select SH7724 if you have an SH-MobileR2R CPU. 431 432config CPU_SUBTYPE_SH7734 433 bool "Support SH7734 processor" 434 select CPU_SH4A 435 select CPU_SHX2 436 select ARCH_WANT_OPTIONAL_GPIOLIB 437 select PINCTRL 438 help 439 Select SH7734 if you have a SH4A SH7734 CPU. 440 441config CPU_SUBTYPE_SH7757 442 bool "Support SH7757 processor" 443 select CPU_SH4A 444 select CPU_SHX2 445 select ARCH_WANT_OPTIONAL_GPIOLIB 446 select PINCTRL 447 help 448 Select SH7757 if you have a SH4A SH7757 CPU. 449 450config CPU_SUBTYPE_SH7763 451 bool "Support SH7763 processor" 452 select CPU_SH4A 453 select USB_OHCI_SH if USB_OHCI_HCD 454 help 455 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU. 456 457config CPU_SUBTYPE_SH7770 458 bool "Support SH7770 processor" 459 select CPU_SH4A 460 461config CPU_SUBTYPE_SH7780 462 bool "Support SH7780 processor" 463 select CPU_SH4A 464 465config CPU_SUBTYPE_SH7785 466 bool "Support SH7785 processor" 467 select CPU_SH4A 468 select CPU_SHX2 469 select ARCH_SPARSEMEM_ENABLE 470 select SYS_SUPPORTS_NUMA 471 select ARCH_WANT_OPTIONAL_GPIOLIB 472 select PINCTRL 473 474config CPU_SUBTYPE_SH7786 475 bool "Support SH7786 processor" 476 select CPU_SH4A 477 select CPU_SHX3 478 select CPU_HAS_PTEAEX 479 select GENERIC_CLOCKEVENTS_BROADCAST if SMP 480 select ARCH_WANT_OPTIONAL_GPIOLIB 481 select USB_OHCI_SH if USB_OHCI_HCD 482 select USB_EHCI_SH if USB_EHCI_HCD 483 select PINCTRL 484 485config CPU_SUBTYPE_SHX3 486 bool "Support SH-X3 processor" 487 select CPU_SH4A 488 select CPU_SHX3 489 select GENERIC_CLOCKEVENTS_BROADCAST if SMP 490 select ARCH_REQUIRE_GPIOLIB 491 select PINCTRL 492 493# SH4AL-DSP Processor Support 494 495config CPU_SUBTYPE_SH7343 496 bool "Support SH7343 processor" 497 select CPU_SH4AL_DSP 498 select ARCH_SHMOBILE 499 select SYS_SUPPORTS_SH_CMT 500 501config CPU_SUBTYPE_SH7722 502 bool "Support SH7722 processor" 503 select CPU_SH4AL_DSP 504 select CPU_SHX2 505 select ARCH_SHMOBILE 506 select ARCH_SPARSEMEM_ENABLE 507 select SYS_SUPPORTS_NUMA 508 select SYS_SUPPORTS_SH_CMT 509 select ARCH_WANT_OPTIONAL_GPIOLIB 510 select PINCTRL 511 512config CPU_SUBTYPE_SH7366 513 bool "Support SH7366 processor" 514 select CPU_SH4AL_DSP 515 select CPU_SHX2 516 select ARCH_SHMOBILE 517 select ARCH_SPARSEMEM_ENABLE 518 select SYS_SUPPORTS_NUMA 519 select SYS_SUPPORTS_SH_CMT 520 521endchoice 522 523endif 524 525if SUPERH64 526 527choice 528 prompt "Processor sub-type selection" 529 530# SH-5 Processor Support 531 532config CPU_SUBTYPE_SH5_101 533 bool "Support SH5-101 processor" 534 select CPU_SH5 535 536config CPU_SUBTYPE_SH5_103 537 bool "Support SH5-103 processor" 538 select CPU_SH5 539 540endchoice 541 542endif 543 544source "arch/sh/mm/Kconfig" 545 546source "arch/sh/Kconfig.cpu" 547 548source "arch/sh/boards/Kconfig" 549 550menu "Timer and clock configuration" 551 552config SH_PCLK_FREQ 553 int "Peripheral clock frequency (in Hz)" 554 depends on SH_CLK_CPG_LEGACY 555 default "31250000" if CPU_SUBTYPE_SH7619 556 default "33333333" if CPU_SUBTYPE_SH7770 || \ 557 CPU_SUBTYPE_SH7760 || \ 558 CPU_SUBTYPE_SH7705 || \ 559 CPU_SUBTYPE_SH7203 || \ 560 CPU_SUBTYPE_SH7206 || \ 561 CPU_SUBTYPE_SH7263 || \ 562 CPU_SUBTYPE_MXG 563 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R 564 default "66000000" if CPU_SUBTYPE_SH4_202 565 default "50000000" 566 help 567 This option is used to specify the peripheral clock frequency. 568 This is necessary for determining the reference clock value on 569 platforms lacking an RTC. 570 571config SH_CLK_CPG 572 def_bool y 573 574config SH_CLK_CPG_LEGACY 575 depends on SH_CLK_CPG 576 def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \ 577 !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \ 578 !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \ 579 !CPU_SUBTYPE_SH7269 580 581endmenu 582 583menu "CPU Frequency scaling" 584source "drivers/cpufreq/Kconfig" 585endmenu 586 587source "arch/sh/drivers/Kconfig" 588 589endmenu 590 591menu "Kernel features" 592 593source kernel/Kconfig.hz 594 595config KEXEC 596 bool "kexec system call (EXPERIMENTAL)" 597 depends on SUPERH32 && MMU 598 help 599 kexec is a system call that implements the ability to shutdown your 600 current kernel, and to start another kernel. It is like a reboot 601 but it is independent of the system firmware. And like a reboot 602 you can start any kernel with it, not just Linux. 603 604 The name comes from the similarity to the exec system call. 605 606 It is an ongoing process to be certain the hardware in a machine 607 is properly shutdown, so do not be surprised if this code does not 608 initially work for you. As of this writing the exact hardware 609 interface is strongly in flux, so no good recommendation can be 610 made. 611 612config CRASH_DUMP 613 bool "kernel crash dumps (EXPERIMENTAL)" 614 depends on SUPERH32 && BROKEN_ON_SMP 615 help 616 Generate crash dump after being started by kexec. 617 This should be normally only set in special crash dump kernels 618 which are loaded in the main kernel with kexec-tools into 619 a specially reserved region and then later executed after 620 a crash by kdump/kexec. The crash dump kernel must be compiled 621 to a memory address not used by the main kernel using 622 PHYSICAL_START. 623 624 For more details see Documentation/kdump/kdump.txt 625 626config KEXEC_JUMP 627 bool "kexec jump (EXPERIMENTAL)" 628 depends on SUPERH32 && KEXEC && HIBERNATION 629 help 630 Jump between original kernel and kexeced kernel and invoke 631 code via KEXEC 632 633config PHYSICAL_START 634 hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP) 635 default MEMORY_START 636 ---help--- 637 This gives the physical address where the kernel is loaded 638 and is ordinarily the same as MEMORY_START. 639 640 Different values are primarily used in the case of kexec on panic 641 where the fail safe kernel needs to run at a different address 642 than the panic-ed kernel. 643 644config SECCOMP 645 bool "Enable seccomp to safely compute untrusted bytecode" 646 depends on PROC_FS 647 help 648 This kernel feature is useful for number crunching applications 649 that may need to compute untrusted bytecode during their 650 execution. By using pipes or other transports made available to 651 the process as file descriptors supporting the read/write 652 syscalls, it's possible to isolate those applications in 653 their own address space using seccomp. Once seccomp is 654 enabled via prctl, it cannot be disabled and the task is only 655 allowed to execute a few safe syscalls defined by each seccomp 656 mode. 657 658 If unsure, say N. 659 660config SMP 661 bool "Symmetric multi-processing support" 662 depends on SYS_SUPPORTS_SMP 663 ---help--- 664 This enables support for systems with more than one CPU. If you have 665 a system with only one CPU, say N. If you have a system with more 666 than one CPU, say Y. 667 668 If you say N here, the kernel will run on uni- and multiprocessor 669 machines, but will use only one CPU of a multiprocessor machine. If 670 you say Y here, the kernel will run on many, but not all, 671 uniprocessor machines. On a uniprocessor machine, the kernel 672 will run faster if you say N here. 673 674 People using multiprocessor machines who say Y here should also say 675 Y to "Enhanced Real Time Clock Support", below. 676 677 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO 678 available at <http://www.tldp.org/docs.html#howto>. 679 680 If you don't know what to do here, say N. 681 682config NR_CPUS 683 int "Maximum number of CPUs (2-32)" 684 range 2 32 685 depends on SMP 686 default "4" if CPU_SUBTYPE_SHX3 687 default "2" 688 help 689 This allows you to specify the maximum number of CPUs which this 690 kernel will support. The maximum supported value is 32 and the 691 minimum value which makes sense is 2. 692 693 This is purely to save memory - each supported CPU adds 694 approximately eight kilobytes to the kernel image. 695 696config HOTPLUG_CPU 697 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" 698 depends on SMP 699 help 700 Say Y here to experiment with turning CPUs off and on. CPUs 701 can be controlled through /sys/devices/system/cpu. 702 703source "kernel/Kconfig.preempt" 704 705config GUSA 706 def_bool y 707 depends on !SMP && SUPERH32 708 help 709 This enables support for gUSA (general UserSpace Atomicity). 710 This is the default implementation for both UP and non-ll/sc 711 CPUs, and is used by the libc, amongst others. 712 713 For additional information, design information can be found 714 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>. 715 716 This should only be disabled for special cases where alternate 717 atomicity implementations exist. 718 719config GUSA_RB 720 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)" 721 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A) 722 help 723 Enabling this option will allow the kernel to implement some 724 atomic operations using a software implementation of load-locked/ 725 store-conditional (LLSC). On machines which do not have hardware 726 LLSC, this should be more efficient than the other alternative of 727 disabling interrupts around the atomic sequence. 728 729config HW_PERF_EVENTS 730 bool "Enable hardware performance counter support for perf events" 731 depends on PERF_EVENTS && CPU_HAS_PMU 732 default y 733 help 734 Enable hardware performance counter support for perf events. If 735 disabled, perf events will use software events only. 736 737source "drivers/sh/Kconfig" 738 739endmenu 740 741menu "Boot options" 742 743config ZERO_PAGE_OFFSET 744 hex 745 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \ 746 SH_7751_SOLUTION_ENGINE 747 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03 748 default "0x00002000" if PAGE_SIZE_8KB 749 default "0x00001000" 750 help 751 This sets the default offset of zero page. 752 753config BOOT_LINK_OFFSET 754 hex 755 default "0x00210000" if SH_SHMIN 756 default "0x00400000" if SH_CAYMAN 757 default "0x00810000" if SH_7780_SOLUTION_ENGINE 758 default "0x009e0000" if SH_TITAN 759 default "0x01800000" if SH_SDK7780 760 default "0x02000000" if SH_EDOSK7760 761 default "0x00800000" 762 help 763 This option allows you to set the link address offset of the zImage. 764 This can be useful if you are on a board which has a small amount of 765 memory. 766 767config ENTRY_OFFSET 768 hex 769 default "0x00001000" if PAGE_SIZE_4KB 770 default "0x00002000" if PAGE_SIZE_8KB 771 default "0x00004000" if PAGE_SIZE_16KB 772 default "0x00010000" if PAGE_SIZE_64KB 773 default "0x00000000" 774 775config ROMIMAGE_MMCIF 776 bool "Include MMCIF loader in romImage (EXPERIMENTAL)" 777 depends on CPU_SUBTYPE_SH7724 778 help 779 Say Y here to include experimental MMCIF loading code in 780 romImage. With this enabled it is possible to write the romImage 781 kernel image to an MMC card and boot the kernel straight from 782 the reset vector. At reset the processor Mask ROM will load the 783 first part of the romImage which in turn loads the rest the kernel 784 image to RAM using the MMCIF hardware block. 785 786choice 787 prompt "Kernel command line" 788 optional 789 default CMDLINE_OVERWRITE 790 help 791 Setting this option allows the kernel command line arguments 792 to be set. 793 794config CMDLINE_OVERWRITE 795 bool "Overwrite bootloader kernel arguments" 796 help 797 Given string will overwrite any arguments passed in by 798 a bootloader. 799 800config CMDLINE_EXTEND 801 bool "Extend bootloader kernel arguments" 802 help 803 Given string will be concatenated with arguments passed in 804 by a bootloader. 805 806endchoice 807 808config CMDLINE 809 string "Kernel command line arguments string" 810 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND 811 default "console=ttySC1,115200" 812 813endmenu 814 815menu "Bus options" 816 817config SUPERHYWAY 818 tristate "SuperHyway Bus support" 819 depends on CPU_SUBTYPE_SH4_202 820 821config MAPLE 822 bool "Maple Bus support" 823 depends on SH_DREAMCAST 824 help 825 The Maple Bus is SEGA's serial communication bus for peripherals 826 on the Dreamcast. Without this bus support you won't be able to 827 get your Dreamcast keyboard etc to work, so most users 828 probably want to say 'Y' here, unless you are only using the 829 Dreamcast with a serial line terminal or a remote network 830 connection. 831 832config PCI 833 bool "PCI support" 834 depends on SYS_SUPPORTS_PCI 835 select PCI_DOMAINS 836 select GENERIC_PCI_IOMAP 837 select NO_GENERIC_PCI_IOPORT_MAP 838 help 839 Find out whether you have a PCI motherboard. PCI is the name of a 840 bus system, i.e. the way the CPU talks to the other stuff inside 841 your box. If you have PCI, say Y, otherwise N. 842 843config PCI_DOMAINS 844 bool 845 846source "drivers/pci/pcie/Kconfig" 847 848source "drivers/pci/Kconfig" 849 850source "drivers/pcmcia/Kconfig" 851 852source "drivers/pci/hotplug/Kconfig" 853 854endmenu 855 856menu "Executable file formats" 857 858source "fs/Kconfig.binfmt" 859 860endmenu 861 862menu "Power management options (EXPERIMENTAL)" 863 864source "kernel/power/Kconfig" 865 866source "drivers/cpuidle/Kconfig" 867 868endmenu 869 870source "net/Kconfig" 871 872source "drivers/Kconfig" 873 874source "fs/Kconfig" 875 876source "arch/sh/Kconfig.debug" 877 878source "security/Kconfig" 879 880source "crypto/Kconfig" 881 882source "lib/Kconfig" 883