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 HAVE_OPROFILE 9 select HAVE_GENERIC_DMA_COHERENT 10 select HAVE_ARCH_TRACEHOOK 11 select HAVE_DMA_API_DEBUG 12 select HAVE_DMA_ATTRS 13 select HAVE_IRQ_WORK 14 select HAVE_PERF_EVENTS 15 select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A) 16 select PERF_USE_VMALLOC 17 select HAVE_KERNEL_GZIP 18 select HAVE_KERNEL_BZIP2 19 select HAVE_KERNEL_LZMA 20 select HAVE_KERNEL_XZ 21 select HAVE_KERNEL_LZO 22 select HAVE_SYSCALL_TRACEPOINTS 23 select HAVE_REGS_AND_STACK_ACCESS_API 24 select HAVE_GENERIC_HARDIRQS 25 select HAVE_SPARSE_IRQ 26 select IRQ_FORCED_THREADING 27 select RTC_LIB 28 select GENERIC_ATOMIC64 29 select GENERIC_IRQ_SHOW 30 help 31 The SuperH is a RISC processor targeted for use in embedded systems 32 and consumer electronics; it was also used in the Sega Dreamcast 33 gaming console. The SuperH port has a home page at 34 <http://www.linux-sh.org/>. 35 36config SUPERH32 37 def_bool ARCH = "sh" 38 select HAVE_KPROBES 39 select HAVE_KRETPROBES 40 select HAVE_IOREMAP_PROT if MMU && !X2TLB 41 select HAVE_FUNCTION_TRACER 42 select HAVE_FTRACE_MCOUNT_RECORD 43 select HAVE_DYNAMIC_FTRACE 44 select HAVE_FUNCTION_TRACE_MCOUNT_TEST 45 select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE 46 select HAVE_FUNCTION_GRAPH_TRACER 47 select HAVE_ARCH_KGDB 48 select HAVE_HW_BREAKPOINT 49 select HAVE_MIXED_BREAKPOINTS_REGS 50 select PERF_EVENTS 51 select ARCH_HIBERNATION_POSSIBLE if MMU 52 select SPARSE_IRQ 53 54config SUPERH64 55 def_bool ARCH = "sh64" 56 57config ARCH_DEFCONFIG 58 string 59 default "arch/sh/configs/shx3_defconfig" if SUPERH32 60 default "arch/sh/configs/cayman_defconfig" if SUPERH64 61 62config RWSEM_GENERIC_SPINLOCK 63 def_bool y 64 65config RWSEM_XCHGADD_ALGORITHM 66 bool 67 68config GENERIC_BUG 69 def_bool y 70 depends on BUG && SUPERH32 71 72config GENERIC_CSUM 73 def_bool y 74 depends on SUPERH64 75 76config GENERIC_HWEIGHT 77 def_bool y 78 79config IRQ_PER_CPU 80 def_bool y 81 82config GENERIC_GPIO 83 def_bool n 84 85config GENERIC_CALIBRATE_DELAY 86 bool 87 88config GENERIC_CLOCKEVENTS 89 def_bool y 90 91config GENERIC_CLOCKEVENTS_BROADCAST 92 bool 93 94config GENERIC_CMOS_UPDATE 95 def_bool y 96 depends on SH_SH03 || SH_DREAMCAST 97 98config GENERIC_LOCKBREAK 99 def_bool y 100 depends on SMP && PREEMPT 101 102config ARCH_SUSPEND_POSSIBLE 103 def_bool n 104 105config ARCH_HIBERNATION_POSSIBLE 106 def_bool n 107 108config SYS_SUPPORTS_APM_EMULATION 109 bool 110 select ARCH_SUSPEND_POSSIBLE 111 112config SYS_SUPPORTS_HUGETLBFS 113 bool 114 115config SYS_SUPPORTS_SMP 116 bool 117 118config SYS_SUPPORTS_NUMA 119 bool 120 121config SYS_SUPPORTS_PCI 122 bool 123 124config SYS_SUPPORTS_CMT 125 bool 126 127config SYS_SUPPORTS_MTU2 128 bool 129 130config SYS_SUPPORTS_TMU 131 bool 132 133config STACKTRACE_SUPPORT 134 def_bool y 135 136config LOCKDEP_SUPPORT 137 def_bool y 138 139config HAVE_LATENCYTOP_SUPPORT 140 def_bool y 141 142config ARCH_HAS_ILOG2_U32 143 def_bool n 144 145config ARCH_HAS_ILOG2_U64 146 def_bool n 147 148config ARCH_NO_VIRT_TO_BUS 149 def_bool y 150 151config ARCH_HAS_DEFAULT_IDLE 152 def_bool y 153 154config ARCH_HAS_CPU_IDLE_WAIT 155 def_bool y 156 157config NO_IOPORT 158 def_bool !PCI 159 depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN 160 161config IO_TRAPPED 162 bool 163 164config DMA_COHERENT 165 bool 166 167config DMA_NONCOHERENT 168 def_bool !DMA_COHERENT 169 170config NEED_DMA_MAP_STATE 171 def_bool DMA_NONCOHERENT 172 173config NEED_SG_DMA_LENGTH 174 def_bool y 175 176source "init/Kconfig" 177 178source "kernel/Kconfig.freezer" 179 180menu "System type" 181 182# 183# Processor families 184# 185config CPU_SH2 186 bool 187 188config CPU_SH2A 189 bool 190 select CPU_SH2 191 select UNCACHED_MAPPING 192 193config CPU_SH3 194 bool 195 select CPU_HAS_INTEVT 196 select CPU_HAS_SR_RB 197 select SYS_SUPPORTS_TMU 198 199config CPU_SH4 200 bool 201 select CPU_HAS_INTEVT 202 select CPU_HAS_SR_RB 203 select CPU_HAS_FPU if !CPU_SH4AL_DSP 204 select SYS_SUPPORTS_TMU 205 select SYS_SUPPORTS_HUGETLBFS if MMU 206 207config CPU_SH4A 208 bool 209 select CPU_SH4 210 211config CPU_SH4AL_DSP 212 bool 213 select CPU_SH4A 214 select CPU_HAS_DSP 215 216config CPU_SH5 217 bool 218 select CPU_HAS_FPU 219 select SYS_SUPPORTS_TMU 220 select SYS_SUPPORTS_HUGETLBFS if MMU 221 222config CPU_SHX2 223 bool 224 225config CPU_SHX3 226 bool 227 select DMA_COHERENT 228 select SYS_SUPPORTS_SMP 229 select SYS_SUPPORTS_NUMA 230 231config ARCH_SHMOBILE 232 bool 233 select ARCH_SUSPEND_POSSIBLE 234 select PM 235 select PM_RUNTIME 236 237config CPU_HAS_PMU 238 depends on CPU_SH4 || CPU_SH4A 239 default y 240 bool 241 242if SUPERH32 243 244choice 245 prompt "Processor sub-type selection" 246 247# 248# Processor subtypes 249# 250 251# SH-2 Processor Support 252 253config CPU_SUBTYPE_SH7619 254 bool "Support SH7619 processor" 255 select CPU_SH2 256 select SYS_SUPPORTS_CMT 257 258# SH-2A Processor Support 259 260config CPU_SUBTYPE_SH7201 261 bool "Support SH7201 processor" 262 select CPU_SH2A 263 select CPU_HAS_FPU 264 select SYS_SUPPORTS_MTU2 265 266config CPU_SUBTYPE_SH7203 267 bool "Support SH7203 processor" 268 select CPU_SH2A 269 select CPU_HAS_FPU 270 select SYS_SUPPORTS_CMT 271 select SYS_SUPPORTS_MTU2 272 select ARCH_WANT_OPTIONAL_GPIOLIB 273 274config CPU_SUBTYPE_SH7206 275 bool "Support SH7206 processor" 276 select CPU_SH2A 277 select SYS_SUPPORTS_CMT 278 select SYS_SUPPORTS_MTU2 279 280config CPU_SUBTYPE_SH7263 281 bool "Support SH7263 processor" 282 select CPU_SH2A 283 select CPU_HAS_FPU 284 select SYS_SUPPORTS_CMT 285 select SYS_SUPPORTS_MTU2 286 287config CPU_SUBTYPE_MXG 288 bool "Support MX-G processor" 289 select CPU_SH2A 290 select SYS_SUPPORTS_MTU2 291 help 292 Select MX-G if running on an R8A03022BG part. 293 294# SH-3 Processor Support 295 296config CPU_SUBTYPE_SH7705 297 bool "Support SH7705 processor" 298 select CPU_SH3 299 300config CPU_SUBTYPE_SH7706 301 bool "Support SH7706 processor" 302 select CPU_SH3 303 help 304 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU. 305 306config CPU_SUBTYPE_SH7707 307 bool "Support SH7707 processor" 308 select CPU_SH3 309 help 310 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU. 311 312config CPU_SUBTYPE_SH7708 313 bool "Support SH7708 processor" 314 select CPU_SH3 315 help 316 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or 317 if you have a 100 Mhz SH-3 HD6417708R CPU. 318 319config CPU_SUBTYPE_SH7709 320 bool "Support SH7709 processor" 321 select CPU_SH3 322 help 323 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU. 324 325config CPU_SUBTYPE_SH7710 326 bool "Support SH7710 processor" 327 select CPU_SH3 328 select CPU_HAS_DSP 329 help 330 Select SH7710 if you have a SH3-DSP SH7710 CPU. 331 332config CPU_SUBTYPE_SH7712 333 bool "Support SH7712 processor" 334 select CPU_SH3 335 select CPU_HAS_DSP 336 help 337 Select SH7712 if you have a SH3-DSP SH7712 CPU. 338 339config CPU_SUBTYPE_SH7720 340 bool "Support SH7720 processor" 341 select CPU_SH3 342 select CPU_HAS_DSP 343 select SYS_SUPPORTS_CMT 344 select ARCH_WANT_OPTIONAL_GPIOLIB 345 select USB_ARCH_HAS_OHCI 346 select USB_OHCI_SH if USB_OHCI_HCD 347 help 348 Select SH7720 if you have a SH3-DSP SH7720 CPU. 349 350config CPU_SUBTYPE_SH7721 351 bool "Support SH7721 processor" 352 select CPU_SH3 353 select CPU_HAS_DSP 354 select SYS_SUPPORTS_CMT 355 select USB_ARCH_HAS_OHCI 356 select USB_OHCI_SH if USB_OHCI_HCD 357 help 358 Select SH7721 if you have a SH3-DSP SH7721 CPU. 359 360# SH-4 Processor Support 361 362config CPU_SUBTYPE_SH7750 363 bool "Support SH7750 processor" 364 select CPU_SH4 365 help 366 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU. 367 368config CPU_SUBTYPE_SH7091 369 bool "Support SH7091 processor" 370 select CPU_SH4 371 help 372 Select SH7091 if you have an SH-4 based Sega device (such as 373 the Dreamcast, Naomi, and Naomi 2). 374 375config CPU_SUBTYPE_SH7750R 376 bool "Support SH7750R processor" 377 select CPU_SH4 378 379config CPU_SUBTYPE_SH7750S 380 bool "Support SH7750S processor" 381 select CPU_SH4 382 383config CPU_SUBTYPE_SH7751 384 bool "Support SH7751 processor" 385 select CPU_SH4 386 help 387 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU, 388 or if you have a HD6417751R CPU. 389 390config CPU_SUBTYPE_SH7751R 391 bool "Support SH7751R processor" 392 select CPU_SH4 393 394config CPU_SUBTYPE_SH7760 395 bool "Support SH7760 processor" 396 select CPU_SH4 397 398config CPU_SUBTYPE_SH4_202 399 bool "Support SH4-202 processor" 400 select CPU_SH4 401 402# SH-4A Processor Support 403 404config CPU_SUBTYPE_SH7723 405 bool "Support SH7723 processor" 406 select CPU_SH4A 407 select CPU_SHX2 408 select ARCH_SHMOBILE 409 select ARCH_SPARSEMEM_ENABLE 410 select SYS_SUPPORTS_CMT 411 select ARCH_WANT_OPTIONAL_GPIOLIB 412 help 413 Select SH7723 if you have an SH-MobileR2 CPU. 414 415config CPU_SUBTYPE_SH7724 416 bool "Support SH7724 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 SH7724 if you have an SH-MobileR2R CPU. 425 426config CPU_SUBTYPE_SH7757 427 bool "Support SH7757 processor" 428 select CPU_SH4A 429 select CPU_SHX2 430 select ARCH_WANT_OPTIONAL_GPIOLIB 431 select USB_ARCH_HAS_OHCI 432 select USB_ARCH_HAS_EHCI 433 help 434 Select SH7757 if you have a SH4A SH7757 CPU. 435 436config CPU_SUBTYPE_SH7763 437 bool "Support SH7763 processor" 438 select CPU_SH4A 439 select USB_ARCH_HAS_OHCI 440 select USB_OHCI_SH if USB_OHCI_HCD 441 help 442 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU. 443 444config CPU_SUBTYPE_SH7770 445 bool "Support SH7770 processor" 446 select CPU_SH4A 447 448config CPU_SUBTYPE_SH7780 449 bool "Support SH7780 processor" 450 select CPU_SH4A 451 452config CPU_SUBTYPE_SH7785 453 bool "Support SH7785 processor" 454 select CPU_SH4A 455 select CPU_SHX2 456 select ARCH_SPARSEMEM_ENABLE 457 select SYS_SUPPORTS_NUMA 458 select ARCH_WANT_OPTIONAL_GPIOLIB 459 460config CPU_SUBTYPE_SH7786 461 bool "Support SH7786 processor" 462 select CPU_SH4A 463 select CPU_SHX3 464 select CPU_HAS_PTEAEX 465 select GENERIC_CLOCKEVENTS_BROADCAST if SMP 466 select ARCH_WANT_OPTIONAL_GPIOLIB 467 select USB_ARCH_HAS_OHCI 468 select USB_OHCI_SH if USB_OHCI_HCD 469 select USB_ARCH_HAS_EHCI 470 select USB_EHCI_SH if USB_EHCI_HCD 471 472config CPU_SUBTYPE_SHX3 473 bool "Support SH-X3 processor" 474 select CPU_SH4A 475 select CPU_SHX3 476 select GENERIC_CLOCKEVENTS_BROADCAST if SMP 477 select ARCH_REQUIRE_GPIOLIB 478 479# SH4AL-DSP Processor Support 480 481config CPU_SUBTYPE_SH7343 482 bool "Support SH7343 processor" 483 select CPU_SH4AL_DSP 484 select ARCH_SHMOBILE 485 select SYS_SUPPORTS_CMT 486 487config CPU_SUBTYPE_SH7722 488 bool "Support SH7722 processor" 489 select CPU_SH4AL_DSP 490 select CPU_SHX2 491 select ARCH_SHMOBILE 492 select ARCH_SPARSEMEM_ENABLE 493 select SYS_SUPPORTS_NUMA 494 select SYS_SUPPORTS_CMT 495 select ARCH_WANT_OPTIONAL_GPIOLIB 496 497config CPU_SUBTYPE_SH7366 498 bool "Support SH7366 processor" 499 select CPU_SH4AL_DSP 500 select CPU_SHX2 501 select ARCH_SHMOBILE 502 select ARCH_SPARSEMEM_ENABLE 503 select SYS_SUPPORTS_NUMA 504 select SYS_SUPPORTS_CMT 505 506endchoice 507 508endif 509 510if SUPERH64 511 512choice 513 prompt "Processor sub-type selection" 514 515# SH-5 Processor Support 516 517config CPU_SUBTYPE_SH5_101 518 bool "Support SH5-101 processor" 519 select CPU_SH5 520 521config CPU_SUBTYPE_SH5_103 522 bool "Support SH5-103 processor" 523 select CPU_SH5 524 525endchoice 526 527endif 528 529source "arch/sh/mm/Kconfig" 530 531source "arch/sh/Kconfig.cpu" 532 533source "arch/sh/boards/Kconfig" 534 535menu "Timer and clock configuration" 536 537config SH_TIMER_TMU 538 bool "TMU timer driver" 539 depends on SYS_SUPPORTS_TMU 540 default y 541 help 542 This enables the build of the TMU timer driver. 543 544config SH_TIMER_CMT 545 bool "CMT timer driver" 546 depends on SYS_SUPPORTS_CMT 547 default y 548 help 549 This enables build of the CMT timer driver. 550 551config SH_TIMER_MTU2 552 bool "MTU2 timer driver" 553 depends on SYS_SUPPORTS_MTU2 554 default y 555 help 556 This enables build of the MTU2 timer driver. 557 558config SH_PCLK_FREQ 559 int "Peripheral clock frequency (in Hz)" 560 depends on SH_CLK_CPG_LEGACY 561 default "31250000" if CPU_SUBTYPE_SH7619 562 default "33333333" if CPU_SUBTYPE_SH7770 || \ 563 CPU_SUBTYPE_SH7760 || \ 564 CPU_SUBTYPE_SH7705 || \ 565 CPU_SUBTYPE_SH7203 || \ 566 CPU_SUBTYPE_SH7206 || \ 567 CPU_SUBTYPE_SH7263 || \ 568 CPU_SUBTYPE_MXG 569 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R 570 default "66000000" if CPU_SUBTYPE_SH4_202 571 default "50000000" 572 help 573 This option is used to specify the peripheral clock frequency. 574 This is necessary for determining the reference clock value on 575 platforms lacking an RTC. 576 577config SH_CLK_CPG 578 def_bool y 579 580config SH_CLK_CPG_LEGACY 581 depends on SH_CLK_CPG 582 def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \ 583 !CPU_SHX3 && !CPU_SUBTYPE_SH7757 584 585source "kernel/time/Kconfig" 586 587endmenu 588 589menu "CPU Frequency scaling" 590 591source "drivers/cpufreq/Kconfig" 592 593config SH_CPU_FREQ 594 tristate "SuperH CPU Frequency driver" 595 depends on CPU_FREQ 596 select CPU_FREQ_TABLE 597 help 598 This adds the cpufreq driver for SuperH. Any CPU that supports 599 clock rate rounding through the clock framework can use this 600 driver. While it will make the kernel slightly larger, this is 601 harmless for CPUs that don't support rate rounding. The driver 602 will also generate a notice in the boot log before disabling 603 itself if the CPU in question is not capable of rate rounding. 604 605 For details, take a look at <file:Documentation/cpu-freq>. 606 607 If unsure, say N. 608 609endmenu 610 611source "arch/sh/drivers/Kconfig" 612 613endmenu 614 615menu "Kernel features" 616 617source kernel/Kconfig.hz 618 619config KEXEC 620 bool "kexec system call (EXPERIMENTAL)" 621 depends on SUPERH32 && EXPERIMENTAL && MMU 622 help 623 kexec is a system call that implements the ability to shutdown your 624 current kernel, and to start another kernel. It is like a reboot 625 but it is independent of the system firmware. And like a reboot 626 you can start any kernel with it, not just Linux. 627 628 The name comes from the similarity to the exec system call. 629 630 It is an ongoing process to be certain the hardware in a machine 631 is properly shutdown, so do not be surprised if this code does not 632 initially work for you. It may help to enable device hotplugging 633 support. As of this writing the exact hardware interface is 634 strongly in flux, so no good recommendation can be made. 635 636config CRASH_DUMP 637 bool "kernel crash dumps (EXPERIMENTAL)" 638 depends on SUPERH32 && EXPERIMENTAL && BROKEN_ON_SMP 639 help 640 Generate crash dump after being started by kexec. 641 This should be normally only set in special crash dump kernels 642 which are loaded in the main kernel with kexec-tools into 643 a specially reserved region and then later executed after 644 a crash by kdump/kexec. The crash dump kernel must be compiled 645 to a memory address not used by the main kernel using 646 PHYSICAL_START. 647 648 For more details see Documentation/kdump/kdump.txt 649 650config KEXEC_JUMP 651 bool "kexec jump (EXPERIMENTAL)" 652 depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL 653 help 654 Jump between original kernel and kexeced kernel and invoke 655 code via KEXEC 656 657config PHYSICAL_START 658 hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP) 659 default MEMORY_START 660 ---help--- 661 This gives the physical address where the kernel is loaded 662 and is ordinarily the same as MEMORY_START. 663 664 Different values are primarily used in the case of kexec on panic 665 where the fail safe kernel needs to run at a different address 666 than the panic-ed kernel. 667 668config SECCOMP 669 bool "Enable seccomp to safely compute untrusted bytecode" 670 depends on PROC_FS 671 help 672 This kernel feature is useful for number crunching applications 673 that may need to compute untrusted bytecode during their 674 execution. By using pipes or other transports made available to 675 the process as file descriptors supporting the read/write 676 syscalls, it's possible to isolate those applications in 677 their own address space using seccomp. Once seccomp is 678 enabled via prctl, it cannot be disabled and the task is only 679 allowed to execute a few safe syscalls defined by each seccomp 680 mode. 681 682 If unsure, say N. 683 684config SMP 685 bool "Symmetric multi-processing support" 686 depends on SYS_SUPPORTS_SMP 687 select USE_GENERIC_SMP_HELPERS 688 ---help--- 689 This enables support for systems with more than one CPU. If you have 690 a system with only one CPU, like most personal computers, say N. If 691 you have a system with more than one CPU, say Y. 692 693 If you say N here, the kernel will run on single and multiprocessor 694 machines, but will use only one CPU of a multiprocessor machine. If 695 you say Y here, the kernel will run on many, but not all, 696 singleprocessor machines. On a singleprocessor machine, the kernel 697 will run faster if you say N here. 698 699 People using multiprocessor machines who say Y here should also say 700 Y to "Enhanced Real Time Clock Support", below. 701 702 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO 703 available at <http://www.tldp.org/docs.html#howto>. 704 705 If you don't know what to do here, say N. 706 707config NR_CPUS 708 int "Maximum number of CPUs (2-32)" 709 range 2 32 710 depends on SMP 711 default "4" if CPU_SUBTYPE_SHX3 712 default "2" 713 help 714 This allows you to specify the maximum number of CPUs which this 715 kernel will support. The maximum supported value is 32 and the 716 minimum value which makes sense is 2. 717 718 This is purely to save memory - each supported CPU adds 719 approximately eight kilobytes to the kernel image. 720 721config HOTPLUG_CPU 722 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" 723 depends on SMP && HOTPLUG && EXPERIMENTAL 724 help 725 Say Y here to experiment with turning CPUs off and on. CPUs 726 can be controlled through /sys/devices/system/cpu. 727 728source "kernel/Kconfig.preempt" 729 730config GUSA 731 def_bool y 732 depends on !SMP && SUPERH32 733 help 734 This enables support for gUSA (general UserSpace Atomicity). 735 This is the default implementation for both UP and non-ll/sc 736 CPUs, and is used by the libc, amongst others. 737 738 For additional information, design information can be found 739 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>. 740 741 This should only be disabled for special cases where alternate 742 atomicity implementations exist. 743 744config GUSA_RB 745 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)" 746 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A) 747 help 748 Enabling this option will allow the kernel to implement some 749 atomic operations using a software implementation of load-locked/ 750 store-conditional (LLSC). On machines which do not have hardware 751 LLSC, this should be more efficient than the other alternative of 752 disabling interrupts around the atomic sequence. 753 754config HW_PERF_EVENTS 755 bool "Enable hardware performance counter support for perf events" 756 depends on PERF_EVENTS && CPU_HAS_PMU 757 default y 758 help 759 Enable hardware performance counter support for perf events. If 760 disabled, perf events will use software events only. 761 762source "drivers/sh/Kconfig" 763 764endmenu 765 766menu "Boot options" 767 768config ZERO_PAGE_OFFSET 769 hex 770 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \ 771 SH_7751_SOLUTION_ENGINE 772 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03 773 default "0x00002000" if PAGE_SIZE_8KB 774 default "0x00001000" 775 help 776 This sets the default offset of zero page. 777 778config BOOT_LINK_OFFSET 779 hex 780 default "0x00210000" if SH_SHMIN 781 default "0x00400000" if SH_CAYMAN 782 default "0x00810000" if SH_7780_SOLUTION_ENGINE 783 default "0x009e0000" if SH_TITAN 784 default "0x01800000" if SH_SDK7780 785 default "0x02000000" if SH_EDOSK7760 786 default "0x00800000" 787 help 788 This option allows you to set the link address offset of the zImage. 789 This can be useful if you are on a board which has a small amount of 790 memory. 791 792config ENTRY_OFFSET 793 hex 794 default "0x00001000" if PAGE_SIZE_4KB 795 default "0x00002000" if PAGE_SIZE_8KB 796 default "0x00004000" if PAGE_SIZE_16KB 797 default "0x00010000" if PAGE_SIZE_64KB 798 default "0x00000000" 799 800config ROMIMAGE_MMCIF 801 bool "Include MMCIF loader in romImage (EXPERIMENTAL)" 802 depends on CPU_SUBTYPE_SH7724 && EXPERIMENTAL 803 help 804 Say Y here to include experimental MMCIF loading code in 805 romImage. With this enabled it is possible to write the romImage 806 kernel image to an MMC card and boot the kernel straight from 807 the reset vector. At reset the processor Mask ROM will load the 808 first part of the romImage which in turn loads the rest the kernel 809 image to RAM using the MMCIF hardware block. 810 811choice 812 prompt "Kernel command line" 813 optional 814 default CMDLINE_OVERWRITE 815 help 816 Setting this option allows the kernel command line arguments 817 to be set. 818 819config CMDLINE_OVERWRITE 820 bool "Overwrite bootloader kernel arguments" 821 help 822 Given string will overwrite any arguments passed in by 823 a bootloader. 824 825config CMDLINE_EXTEND 826 bool "Extend bootloader kernel arguments" 827 help 828 Given string will be concatenated with arguments passed in 829 by a bootloader. 830 831endchoice 832 833config CMDLINE 834 string "Kernel command line arguments string" 835 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND 836 default "console=ttySC1,115200" 837 838endmenu 839 840menu "Bus options" 841 842config SUPERHYWAY 843 tristate "SuperHyway Bus support" 844 depends on CPU_SUBTYPE_SH4_202 845 846config MAPLE 847 bool "Maple Bus support" 848 depends on SH_DREAMCAST 849 help 850 The Maple Bus is SEGA's serial communication bus for peripherals 851 on the Dreamcast. Without this bus support you won't be able to 852 get your Dreamcast keyboard etc to work, so most users 853 probably want to say 'Y' here, unless you are only using the 854 Dreamcast with a serial line terminal or a remote network 855 connection. 856 857config PCI 858 bool "PCI support" 859 depends on SYS_SUPPORTS_PCI 860 select PCI_DOMAINS 861 select GENERIC_PCI_IOMAP 862 help 863 Find out whether you have a PCI motherboard. PCI is the name of a 864 bus system, i.e. the way the CPU talks to the other stuff inside 865 your box. If you have PCI, say Y, otherwise N. 866 867config PCI_DOMAINS 868 bool 869 870source "drivers/pci/pcie/Kconfig" 871 872source "drivers/pci/Kconfig" 873 874source "drivers/pcmcia/Kconfig" 875 876source "drivers/pci/hotplug/Kconfig" 877 878endmenu 879 880menu "Executable file formats" 881 882source "fs/Kconfig.binfmt" 883 884endmenu 885 886menu "Power management options (EXPERIMENTAL)" 887depends on EXPERIMENTAL 888 889source "kernel/power/Kconfig" 890 891source "drivers/cpuidle/Kconfig" 892 893endmenu 894 895source "net/Kconfig" 896 897source "drivers/Kconfig" 898 899source "fs/Kconfig" 900 901source "arch/sh/Kconfig.debug" 902 903source "security/Kconfig" 904 905source "crypto/Kconfig" 906 907source "lib/Kconfig" 908