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