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