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_MXG 292 bool "Support MX-G processor" 293 select CPU_SH2A 294 select SYS_SUPPORTS_MTU2 295 help 296 Select MX-G if running on an R8A03022BG part. 297 298# SH-3 Processor Support 299 300config CPU_SUBTYPE_SH7705 301 bool "Support SH7705 processor" 302 select CPU_SH3 303 304config CPU_SUBTYPE_SH7706 305 bool "Support SH7706 processor" 306 select CPU_SH3 307 help 308 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU. 309 310config CPU_SUBTYPE_SH7707 311 bool "Support SH7707 processor" 312 select CPU_SH3 313 help 314 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU. 315 316config CPU_SUBTYPE_SH7708 317 bool "Support SH7708 processor" 318 select CPU_SH3 319 help 320 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or 321 if you have a 100 Mhz SH-3 HD6417708R CPU. 322 323config CPU_SUBTYPE_SH7709 324 bool "Support SH7709 processor" 325 select CPU_SH3 326 help 327 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU. 328 329config CPU_SUBTYPE_SH7710 330 bool "Support SH7710 processor" 331 select CPU_SH3 332 select CPU_HAS_DSP 333 help 334 Select SH7710 if you have a SH3-DSP SH7710 CPU. 335 336config CPU_SUBTYPE_SH7712 337 bool "Support SH7712 processor" 338 select CPU_SH3 339 select CPU_HAS_DSP 340 help 341 Select SH7712 if you have a SH3-DSP SH7712 CPU. 342 343config CPU_SUBTYPE_SH7720 344 bool "Support SH7720 processor" 345 select CPU_SH3 346 select CPU_HAS_DSP 347 select SYS_SUPPORTS_CMT 348 select ARCH_WANT_OPTIONAL_GPIOLIB 349 select USB_ARCH_HAS_OHCI 350 select USB_OHCI_SH if USB_OHCI_HCD 351 help 352 Select SH7720 if you have a SH3-DSP SH7720 CPU. 353 354config CPU_SUBTYPE_SH7721 355 bool "Support SH7721 processor" 356 select CPU_SH3 357 select CPU_HAS_DSP 358 select SYS_SUPPORTS_CMT 359 select USB_ARCH_HAS_OHCI 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_CMT 415 select ARCH_WANT_OPTIONAL_GPIOLIB 416 help 417 Select SH7723 if you have an SH-MobileR2 CPU. 418 419config CPU_SUBTYPE_SH7724 420 bool "Support SH7724 processor" 421 select CPU_SH4A 422 select CPU_SHX2 423 select ARCH_SHMOBILE 424 select ARCH_SPARSEMEM_ENABLE 425 select SYS_SUPPORTS_CMT 426 select ARCH_WANT_OPTIONAL_GPIOLIB 427 help 428 Select SH7724 if you have an SH-MobileR2R CPU. 429 430config CPU_SUBTYPE_SH7734 431 bool "Support SH7734 processor" 432 select CPU_SH4A 433 select CPU_SHX2 434 select ARCH_WANT_OPTIONAL_GPIOLIB 435 select USB_ARCH_HAS_OHCI 436 select USB_ARCH_HAS_EHCI 437 help 438 Select SH7734 if you have a SH4A SH7734 CPU. 439 440config CPU_SUBTYPE_SH7757 441 bool "Support SH7757 processor" 442 select CPU_SH4A 443 select CPU_SHX2 444 select ARCH_WANT_OPTIONAL_GPIOLIB 445 select USB_ARCH_HAS_OHCI 446 select USB_ARCH_HAS_EHCI 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_ARCH_HAS_OHCI 454 select USB_OHCI_SH if USB_OHCI_HCD 455 help 456 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU. 457 458config CPU_SUBTYPE_SH7770 459 bool "Support SH7770 processor" 460 select CPU_SH4A 461 462config CPU_SUBTYPE_SH7780 463 bool "Support SH7780 processor" 464 select CPU_SH4A 465 466config CPU_SUBTYPE_SH7785 467 bool "Support SH7785 processor" 468 select CPU_SH4A 469 select CPU_SHX2 470 select ARCH_SPARSEMEM_ENABLE 471 select SYS_SUPPORTS_NUMA 472 select ARCH_WANT_OPTIONAL_GPIOLIB 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_ARCH_HAS_OHCI 482 select USB_OHCI_SH if USB_OHCI_HCD 483 select USB_ARCH_HAS_EHCI 484 select USB_EHCI_SH if USB_EHCI_HCD 485 486config CPU_SUBTYPE_SHX3 487 bool "Support SH-X3 processor" 488 select CPU_SH4A 489 select CPU_SHX3 490 select GENERIC_CLOCKEVENTS_BROADCAST if SMP 491 select ARCH_REQUIRE_GPIOLIB 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_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_CMT 509 select ARCH_WANT_OPTIONAL_GPIOLIB 510 511config CPU_SUBTYPE_SH7366 512 bool "Support SH7366 processor" 513 select CPU_SH4AL_DSP 514 select CPU_SHX2 515 select ARCH_SHMOBILE 516 select ARCH_SPARSEMEM_ENABLE 517 select SYS_SUPPORTS_NUMA 518 select SYS_SUPPORTS_CMT 519 520endchoice 521 522endif 523 524if SUPERH64 525 526choice 527 prompt "Processor sub-type selection" 528 529# SH-5 Processor Support 530 531config CPU_SUBTYPE_SH5_101 532 bool "Support SH5-101 processor" 533 select CPU_SH5 534 535config CPU_SUBTYPE_SH5_103 536 bool "Support SH5-103 processor" 537 select CPU_SH5 538 539endchoice 540 541endif 542 543source "arch/sh/mm/Kconfig" 544 545source "arch/sh/Kconfig.cpu" 546 547source "arch/sh/boards/Kconfig" 548 549menu "Timer and clock configuration" 550 551config SH_TIMER_TMU 552 bool "TMU timer driver" 553 depends on SYS_SUPPORTS_TMU 554 default y 555 help 556 This enables the build of the TMU timer driver. 557 558config SH_TIMER_CMT 559 bool "CMT timer driver" 560 depends on SYS_SUPPORTS_CMT 561 default y 562 help 563 This enables build of the CMT timer driver. 564 565config SH_TIMER_MTU2 566 bool "MTU2 timer driver" 567 depends on SYS_SUPPORTS_MTU2 568 default y 569 help 570 This enables build of the MTU2 timer driver. 571 572config SH_PCLK_FREQ 573 int "Peripheral clock frequency (in Hz)" 574 depends on SH_CLK_CPG_LEGACY 575 default "31250000" if CPU_SUBTYPE_SH7619 576 default "33333333" if CPU_SUBTYPE_SH7770 || \ 577 CPU_SUBTYPE_SH7760 || \ 578 CPU_SUBTYPE_SH7705 || \ 579 CPU_SUBTYPE_SH7203 || \ 580 CPU_SUBTYPE_SH7206 || \ 581 CPU_SUBTYPE_SH7263 || \ 582 CPU_SUBTYPE_MXG 583 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R 584 default "66000000" if CPU_SUBTYPE_SH4_202 585 default "50000000" 586 help 587 This option is used to specify the peripheral clock frequency. 588 This is necessary for determining the reference clock value on 589 platforms lacking an RTC. 590 591config SH_CLK_CPG 592 def_bool y 593 594config SH_CLK_CPG_LEGACY 595 depends on SH_CLK_CPG 596 def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \ 597 !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && !CPU_SUBTYPE_SH7734 598 599source "kernel/time/Kconfig" 600 601endmenu 602 603menu "CPU Frequency scaling" 604 605source "drivers/cpufreq/Kconfig" 606 607config SH_CPU_FREQ 608 tristate "SuperH CPU Frequency driver" 609 depends on CPU_FREQ 610 select CPU_FREQ_TABLE 611 help 612 This adds the cpufreq driver for SuperH. Any CPU that supports 613 clock rate rounding through the clock framework can use this 614 driver. While it will make the kernel slightly larger, this is 615 harmless for CPUs that don't support rate rounding. The driver 616 will also generate a notice in the boot log before disabling 617 itself if the CPU in question is not capable of rate rounding. 618 619 For details, take a look at <file:Documentation/cpu-freq>. 620 621 If unsure, say N. 622 623endmenu 624 625source "arch/sh/drivers/Kconfig" 626 627endmenu 628 629menu "Kernel features" 630 631source kernel/Kconfig.hz 632 633config KEXEC 634 bool "kexec system call (EXPERIMENTAL)" 635 depends on SUPERH32 && EXPERIMENTAL && MMU 636 help 637 kexec is a system call that implements the ability to shutdown your 638 current kernel, and to start another kernel. It is like a reboot 639 but it is independent of the system firmware. And like a reboot 640 you can start any kernel with it, not just Linux. 641 642 The name comes from the similarity to the exec system call. 643 644 It is an ongoing process to be certain the hardware in a machine 645 is properly shutdown, so do not be surprised if this code does not 646 initially work for you. It may help to enable device hotplugging 647 support. As of this writing the exact hardware interface is 648 strongly in flux, so no good recommendation can be made. 649 650config CRASH_DUMP 651 bool "kernel crash dumps (EXPERIMENTAL)" 652 depends on SUPERH32 && EXPERIMENTAL && BROKEN_ON_SMP 653 help 654 Generate crash dump after being started by kexec. 655 This should be normally only set in special crash dump kernels 656 which are loaded in the main kernel with kexec-tools into 657 a specially reserved region and then later executed after 658 a crash by kdump/kexec. The crash dump kernel must be compiled 659 to a memory address not used by the main kernel using 660 PHYSICAL_START. 661 662 For more details see Documentation/kdump/kdump.txt 663 664config KEXEC_JUMP 665 bool "kexec jump (EXPERIMENTAL)" 666 depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL 667 help 668 Jump between original kernel and kexeced kernel and invoke 669 code via KEXEC 670 671config PHYSICAL_START 672 hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP) 673 default MEMORY_START 674 ---help--- 675 This gives the physical address where the kernel is loaded 676 and is ordinarily the same as MEMORY_START. 677 678 Different values are primarily used in the case of kexec on panic 679 where the fail safe kernel needs to run at a different address 680 than the panic-ed kernel. 681 682config SECCOMP 683 bool "Enable seccomp to safely compute untrusted bytecode" 684 depends on PROC_FS 685 help 686 This kernel feature is useful for number crunching applications 687 that may need to compute untrusted bytecode during their 688 execution. By using pipes or other transports made available to 689 the process as file descriptors supporting the read/write 690 syscalls, it's possible to isolate those applications in 691 their own address space using seccomp. Once seccomp is 692 enabled via prctl, it cannot be disabled and the task is only 693 allowed to execute a few safe syscalls defined by each seccomp 694 mode. 695 696 If unsure, say N. 697 698config SMP 699 bool "Symmetric multi-processing support" 700 depends on SYS_SUPPORTS_SMP 701 select USE_GENERIC_SMP_HELPERS 702 ---help--- 703 This enables support for systems with more than one CPU. If you have 704 a system with only one CPU, like most personal computers, say N. If 705 you have a system with more than one CPU, say Y. 706 707 If you say N here, the kernel will run on single and multiprocessor 708 machines, but will use only one CPU of a multiprocessor machine. If 709 you say Y here, the kernel will run on many, but not all, 710 singleprocessor machines. On a singleprocessor machine, the kernel 711 will run faster if you say N here. 712 713 People using multiprocessor machines who say Y here should also say 714 Y to "Enhanced Real Time Clock Support", below. 715 716 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO 717 available at <http://www.tldp.org/docs.html#howto>. 718 719 If you don't know what to do here, say N. 720 721config NR_CPUS 722 int "Maximum number of CPUs (2-32)" 723 range 2 32 724 depends on SMP 725 default "4" if CPU_SUBTYPE_SHX3 726 default "2" 727 help 728 This allows you to specify the maximum number of CPUs which this 729 kernel will support. The maximum supported value is 32 and the 730 minimum value which makes sense is 2. 731 732 This is purely to save memory - each supported CPU adds 733 approximately eight kilobytes to the kernel image. 734 735config HOTPLUG_CPU 736 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" 737 depends on SMP && HOTPLUG && EXPERIMENTAL 738 help 739 Say Y here to experiment with turning CPUs off and on. CPUs 740 can be controlled through /sys/devices/system/cpu. 741 742source "kernel/Kconfig.preempt" 743 744config GUSA 745 def_bool y 746 depends on !SMP && SUPERH32 747 help 748 This enables support for gUSA (general UserSpace Atomicity). 749 This is the default implementation for both UP and non-ll/sc 750 CPUs, and is used by the libc, amongst others. 751 752 For additional information, design information can be found 753 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>. 754 755 This should only be disabled for special cases where alternate 756 atomicity implementations exist. 757 758config GUSA_RB 759 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)" 760 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A) 761 help 762 Enabling this option will allow the kernel to implement some 763 atomic operations using a software implementation of load-locked/ 764 store-conditional (LLSC). On machines which do not have hardware 765 LLSC, this should be more efficient than the other alternative of 766 disabling interrupts around the atomic sequence. 767 768config HW_PERF_EVENTS 769 bool "Enable hardware performance counter support for perf events" 770 depends on PERF_EVENTS && CPU_HAS_PMU 771 default y 772 help 773 Enable hardware performance counter support for perf events. If 774 disabled, perf events will use software events only. 775 776source "drivers/sh/Kconfig" 777 778endmenu 779 780menu "Boot options" 781 782config ZERO_PAGE_OFFSET 783 hex 784 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \ 785 SH_7751_SOLUTION_ENGINE 786 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03 787 default "0x00002000" if PAGE_SIZE_8KB 788 default "0x00001000" 789 help 790 This sets the default offset of zero page. 791 792config BOOT_LINK_OFFSET 793 hex 794 default "0x00210000" if SH_SHMIN 795 default "0x00400000" if SH_CAYMAN 796 default "0x00810000" if SH_7780_SOLUTION_ENGINE 797 default "0x009e0000" if SH_TITAN 798 default "0x01800000" if SH_SDK7780 799 default "0x02000000" if SH_EDOSK7760 800 default "0x00800000" 801 help 802 This option allows you to set the link address offset of the zImage. 803 This can be useful if you are on a board which has a small amount of 804 memory. 805 806config ENTRY_OFFSET 807 hex 808 default "0x00001000" if PAGE_SIZE_4KB 809 default "0x00002000" if PAGE_SIZE_8KB 810 default "0x00004000" if PAGE_SIZE_16KB 811 default "0x00010000" if PAGE_SIZE_64KB 812 default "0x00000000" 813 814config ROMIMAGE_MMCIF 815 bool "Include MMCIF loader in romImage (EXPERIMENTAL)" 816 depends on CPU_SUBTYPE_SH7724 && EXPERIMENTAL 817 help 818 Say Y here to include experimental MMCIF loading code in 819 romImage. With this enabled it is possible to write the romImage 820 kernel image to an MMC card and boot the kernel straight from 821 the reset vector. At reset the processor Mask ROM will load the 822 first part of the romImage which in turn loads the rest the kernel 823 image to RAM using the MMCIF hardware block. 824 825choice 826 prompt "Kernel command line" 827 optional 828 default CMDLINE_OVERWRITE 829 help 830 Setting this option allows the kernel command line arguments 831 to be set. 832 833config CMDLINE_OVERWRITE 834 bool "Overwrite bootloader kernel arguments" 835 help 836 Given string will overwrite any arguments passed in by 837 a bootloader. 838 839config CMDLINE_EXTEND 840 bool "Extend bootloader kernel arguments" 841 help 842 Given string will be concatenated with arguments passed in 843 by a bootloader. 844 845endchoice 846 847config CMDLINE 848 string "Kernel command line arguments string" 849 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND 850 default "console=ttySC1,115200" 851 852endmenu 853 854menu "Bus options" 855 856config SUPERHYWAY 857 tristate "SuperHyway Bus support" 858 depends on CPU_SUBTYPE_SH4_202 859 860config MAPLE 861 bool "Maple Bus support" 862 depends on SH_DREAMCAST 863 help 864 The Maple Bus is SEGA's serial communication bus for peripherals 865 on the Dreamcast. Without this bus support you won't be able to 866 get your Dreamcast keyboard etc to work, so most users 867 probably want to say 'Y' here, unless you are only using the 868 Dreamcast with a serial line terminal or a remote network 869 connection. 870 871config PCI 872 bool "PCI support" 873 depends on SYS_SUPPORTS_PCI 874 select PCI_DOMAINS 875 select GENERIC_PCI_IOMAP 876 select NO_GENERIC_PCI_IOPORT_MAP 877 help 878 Find out whether you have a PCI motherboard. PCI is the name of a 879 bus system, i.e. the way the CPU talks to the other stuff inside 880 your box. If you have PCI, say Y, otherwise N. 881 882config PCI_DOMAINS 883 bool 884 885source "drivers/pci/pcie/Kconfig" 886 887source "drivers/pci/Kconfig" 888 889source "drivers/pcmcia/Kconfig" 890 891source "drivers/pci/hotplug/Kconfig" 892 893endmenu 894 895menu "Executable file formats" 896 897source "fs/Kconfig.binfmt" 898 899endmenu 900 901menu "Power management options (EXPERIMENTAL)" 902depends on EXPERIMENTAL 903 904source "kernel/power/Kconfig" 905 906source "drivers/cpuidle/Kconfig" 907 908endmenu 909 910source "net/Kconfig" 911 912source "drivers/Kconfig" 913 914source "fs/Kconfig" 915 916source "arch/sh/Kconfig.debug" 917 918source "security/Kconfig" 919 920source "crypto/Kconfig" 921 922source "lib/Kconfig" 923