1config SUPERH 2 def_bool y 3 select ARCH_MIGHT_HAVE_PC_PARPORT 4 select HAVE_PATA_PLATFORM 5 select CLKDEV_LOOKUP 6 select HAVE_IDE if HAS_IOPORT_MAP 7 select HAVE_MEMBLOCK 8 select HAVE_MEMBLOCK_NODE_MAP 9 select ARCH_DISCARD_MEMBLOCK 10 select HAVE_OPROFILE 11 select HAVE_GENERIC_DMA_COHERENT 12 select HAVE_ARCH_TRACEHOOK 13 select HAVE_DMA_API_DEBUG 14 select HAVE_DMA_ATTRS 15 select HAVE_PERF_EVENTS 16 select HAVE_DEBUG_BUGVERBOSE 17 select ARCH_HAVE_CUSTOM_GPIO_H 18 select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A) 19 select ARCH_HAS_GCOV_PROFILE_ALL 20 select PERF_USE_VMALLOC 21 select HAVE_DEBUG_KMEMLEAK 22 select HAVE_KERNEL_GZIP 23 select HAVE_KERNEL_BZIP2 24 select HAVE_KERNEL_LZMA 25 select HAVE_KERNEL_XZ 26 select HAVE_KERNEL_LZO 27 select HAVE_UID16 28 select ARCH_WANT_IPC_PARSE_VERSION 29 select HAVE_SYSCALL_TRACEPOINTS 30 select HAVE_REGS_AND_STACK_ACCESS_API 31 select MAY_HAVE_SPARSE_IRQ 32 select IRQ_FORCED_THREADING 33 select RTC_LIB 34 select GENERIC_ATOMIC64 35 select GENERIC_IRQ_SHOW 36 select GENERIC_SMP_IDLE_THREAD 37 select GENERIC_IDLE_POLL_SETUP 38 select GENERIC_CLOCKEVENTS 39 select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST 40 select GENERIC_STRNCPY_FROM_USER 41 select GENERIC_STRNLEN_USER 42 select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER 43 select MODULES_USE_ELF_RELA 44 select OLD_SIGSUSPEND 45 select OLD_SIGACTION 46 select HAVE_ARCH_AUDITSYSCALL 47 help 48 The SuperH is a RISC processor targeted for use in embedded systems 49 and consumer electronics; it was also used in the Sega Dreamcast 50 gaming console. The SuperH port has a home page at 51 <http://www.linux-sh.org/>. 52 53config SUPERH32 54 def_bool ARCH = "sh" 55 select HAVE_KPROBES 56 select HAVE_KRETPROBES 57 select HAVE_IOREMAP_PROT if MMU && !X2TLB 58 select HAVE_FUNCTION_TRACER 59 select HAVE_FTRACE_MCOUNT_RECORD 60 select HAVE_DYNAMIC_FTRACE 61 select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE 62 select ARCH_WANT_IPC_PARSE_VERSION 63 select HAVE_FUNCTION_GRAPH_TRACER 64 select HAVE_ARCH_KGDB 65 select HAVE_HW_BREAKPOINT 66 select HAVE_MIXED_BREAKPOINTS_REGS 67 select PERF_EVENTS 68 select ARCH_HIBERNATION_POSSIBLE if MMU 69 select SPARSE_IRQ 70 select HAVE_CC_STACKPROTECTOR 71 72config SUPERH64 73 def_bool ARCH = "sh64" 74 select HAVE_EXIT_THREAD 75 select KALLSYMS 76 77config ARCH_DEFCONFIG 78 string 79 default "arch/sh/configs/shx3_defconfig" if SUPERH32 80 default "arch/sh/configs/cayman_defconfig" if SUPERH64 81 82config RWSEM_GENERIC_SPINLOCK 83 def_bool y 84 85config RWSEM_XCHGADD_ALGORITHM 86 bool 87 88config GENERIC_BUG 89 def_bool y 90 depends on BUG && SUPERH32 91 92config GENERIC_CSUM 93 def_bool y 94 depends on SUPERH64 95 96config GENERIC_HWEIGHT 97 def_bool y 98 99config GENERIC_CALIBRATE_DELAY 100 bool 101 102config GENERIC_LOCKBREAK 103 def_bool y 104 depends on SMP && PREEMPT 105 106config ARCH_SUSPEND_POSSIBLE 107 def_bool n 108 109config ARCH_HIBERNATION_POSSIBLE 110 def_bool n 111 112config SYS_SUPPORTS_APM_EMULATION 113 bool 114 select ARCH_SUSPEND_POSSIBLE 115 116config SYS_SUPPORTS_HUGETLBFS 117 bool 118 119config SYS_SUPPORTS_SMP 120 bool 121 122config SYS_SUPPORTS_NUMA 123 bool 124 125config SYS_SUPPORTS_PCI 126 bool 127 128config STACKTRACE_SUPPORT 129 def_bool y 130 131config LOCKDEP_SUPPORT 132 def_bool y 133 134config HAVE_LATENCYTOP_SUPPORT 135 def_bool y 136 137config ARCH_HAS_ILOG2_U32 138 def_bool n 139 140config ARCH_HAS_ILOG2_U64 141 def_bool n 142 143config NO_IOPORT_MAP 144 def_bool !PCI 145 depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN && \ 146 !SH_HP6XX && !SH_SOLUTION_ENGINE 147 148config IO_TRAPPED 149 bool 150 151config SWAP_IO_SPACE 152 bool 153 154config DMA_COHERENT 155 bool 156 157config DMA_NONCOHERENT 158 def_bool !DMA_COHERENT 159 160config NEED_DMA_MAP_STATE 161 def_bool DMA_NONCOHERENT 162 163config NEED_SG_DMA_LENGTH 164 def_bool y 165 166config PGTABLE_LEVELS 167 default 3 if X2TLB 168 default 2 169 170source "init/Kconfig" 171 172source "kernel/Kconfig.freezer" 173 174menu "System type" 175 176# 177# Processor families 178# 179config CPU_SH2 180 bool 181 select SH_INTC 182 183config CPU_SH2A 184 bool 185 select CPU_SH2 186 select UNCACHED_MAPPING 187 188config CPU_SH3 189 bool 190 select CPU_HAS_INTEVT 191 select CPU_HAS_SR_RB 192 select SH_INTC 193 select SYS_SUPPORTS_SH_TMU 194 195config CPU_SH4 196 bool 197 select CPU_HAS_INTEVT 198 select CPU_HAS_SR_RB 199 select CPU_HAS_FPU if !CPU_SH4AL_DSP 200 select SH_INTC 201 select SYS_SUPPORTS_SH_TMU 202 select SYS_SUPPORTS_HUGETLBFS if MMU 203 204config CPU_SH4A 205 bool 206 select CPU_SH4 207 208config CPU_SH4AL_DSP 209 bool 210 select CPU_SH4A 211 select CPU_HAS_DSP 212 213config CPU_SH5 214 bool 215 select CPU_HAS_FPU 216 select SYS_SUPPORTS_SH_TMU 217 select SYS_SUPPORTS_HUGETLBFS if MMU 218 219config CPU_SHX2 220 bool 221 222config CPU_SHX3 223 bool 224 select DMA_COHERENT 225 select SYS_SUPPORTS_SMP 226 select SYS_SUPPORTS_NUMA 227 228config ARCH_SHMOBILE 229 bool 230 select ARCH_SUSPEND_POSSIBLE 231 select PM 232 233config CPU_HAS_PMU 234 depends on CPU_SH4 || CPU_SH4A 235 default y 236 bool 237 238if SUPERH32 239 240choice 241 prompt "Processor sub-type selection" 242 243# 244# Processor subtypes 245# 246 247# SH-2 Processor Support 248 249config CPU_SUBTYPE_SH7619 250 bool "Support SH7619 processor" 251 select CPU_SH2 252 select SYS_SUPPORTS_SH_CMT 253 254# SH-2A Processor Support 255 256config CPU_SUBTYPE_SH7201 257 bool "Support SH7201 processor" 258 select CPU_SH2A 259 select CPU_HAS_FPU 260 select SYS_SUPPORTS_SH_MTU2 261 262config CPU_SUBTYPE_SH7203 263 bool "Support SH7203 processor" 264 select CPU_SH2A 265 select CPU_HAS_FPU 266 select SYS_SUPPORTS_SH_CMT 267 select SYS_SUPPORTS_SH_MTU2 268 select ARCH_WANT_OPTIONAL_GPIOLIB 269 select PINCTRL 270 271config CPU_SUBTYPE_SH7206 272 bool "Support SH7206 processor" 273 select CPU_SH2A 274 select SYS_SUPPORTS_SH_CMT 275 select SYS_SUPPORTS_SH_MTU2 276 277config CPU_SUBTYPE_SH7263 278 bool "Support SH7263 processor" 279 select CPU_SH2A 280 select CPU_HAS_FPU 281 select SYS_SUPPORTS_SH_CMT 282 select SYS_SUPPORTS_SH_MTU2 283 284config CPU_SUBTYPE_SH7264 285 bool "Support SH7264 processor" 286 select CPU_SH2A 287 select CPU_HAS_FPU 288 select SYS_SUPPORTS_SH_CMT 289 select SYS_SUPPORTS_SH_MTU2 290 select PINCTRL 291 292config CPU_SUBTYPE_SH7269 293 bool "Support SH7269 processor" 294 select CPU_SH2A 295 select CPU_HAS_FPU 296 select SYS_SUPPORTS_SH_CMT 297 select SYS_SUPPORTS_SH_MTU2 298 select PINCTRL 299 300config CPU_SUBTYPE_MXG 301 bool "Support MX-G processor" 302 select CPU_SH2A 303 select SYS_SUPPORTS_SH_MTU2 304 help 305 Select MX-G if running on an R8A03022BG part. 306 307# SH-3 Processor Support 308 309config CPU_SUBTYPE_SH7705 310 bool "Support SH7705 processor" 311 select CPU_SH3 312 313config CPU_SUBTYPE_SH7706 314 bool "Support SH7706 processor" 315 select CPU_SH3 316 help 317 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU. 318 319config CPU_SUBTYPE_SH7707 320 bool "Support SH7707 processor" 321 select CPU_SH3 322 help 323 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU. 324 325config CPU_SUBTYPE_SH7708 326 bool "Support SH7708 processor" 327 select CPU_SH3 328 help 329 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or 330 if you have a 100 Mhz SH-3 HD6417708R CPU. 331 332config CPU_SUBTYPE_SH7709 333 bool "Support SH7709 processor" 334 select CPU_SH3 335 help 336 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU. 337 338config CPU_SUBTYPE_SH7710 339 bool "Support SH7710 processor" 340 select CPU_SH3 341 select CPU_HAS_DSP 342 help 343 Select SH7710 if you have a SH3-DSP SH7710 CPU. 344 345config CPU_SUBTYPE_SH7712 346 bool "Support SH7712 processor" 347 select CPU_SH3 348 select CPU_HAS_DSP 349 help 350 Select SH7712 if you have a SH3-DSP SH7712 CPU. 351 352config CPU_SUBTYPE_SH7720 353 bool "Support SH7720 processor" 354 select CPU_SH3 355 select CPU_HAS_DSP 356 select SYS_SUPPORTS_SH_CMT 357 select ARCH_WANT_OPTIONAL_GPIOLIB 358 select USB_OHCI_SH if USB_OHCI_HCD 359 select PINCTRL 360 help 361 Select SH7720 if you have a SH3-DSP SH7720 CPU. 362 363config CPU_SUBTYPE_SH7721 364 bool "Support SH7721 processor" 365 select CPU_SH3 366 select CPU_HAS_DSP 367 select SYS_SUPPORTS_SH_CMT 368 select USB_OHCI_SH if USB_OHCI_HCD 369 help 370 Select SH7721 if you have a SH3-DSP SH7721 CPU. 371 372# SH-4 Processor Support 373 374config CPU_SUBTYPE_SH7750 375 bool "Support SH7750 processor" 376 select CPU_SH4 377 help 378 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU. 379 380config CPU_SUBTYPE_SH7091 381 bool "Support SH7091 processor" 382 select CPU_SH4 383 help 384 Select SH7091 if you have an SH-4 based Sega device (such as 385 the Dreamcast, Naomi, and Naomi 2). 386 387config CPU_SUBTYPE_SH7750R 388 bool "Support SH7750R processor" 389 select CPU_SH4 390 391config CPU_SUBTYPE_SH7750S 392 bool "Support SH7750S processor" 393 select CPU_SH4 394 395config CPU_SUBTYPE_SH7751 396 bool "Support SH7751 processor" 397 select CPU_SH4 398 help 399 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU, 400 or if you have a HD6417751R CPU. 401 402config CPU_SUBTYPE_SH7751R 403 bool "Support SH7751R processor" 404 select CPU_SH4 405 406config CPU_SUBTYPE_SH7760 407 bool "Support SH7760 processor" 408 select CPU_SH4 409 410config CPU_SUBTYPE_SH4_202 411 bool "Support SH4-202 processor" 412 select CPU_SH4 413 414# SH-4A Processor Support 415 416config CPU_SUBTYPE_SH7723 417 bool "Support SH7723 processor" 418 select CPU_SH4A 419 select CPU_SHX2 420 select ARCH_SHMOBILE 421 select ARCH_SPARSEMEM_ENABLE 422 select SYS_SUPPORTS_SH_CMT 423 select ARCH_WANT_OPTIONAL_GPIOLIB 424 select PINCTRL 425 help 426 Select SH7723 if you have an SH-MobileR2 CPU. 427 428config CPU_SUBTYPE_SH7724 429 bool "Support SH7724 processor" 430 select CPU_SH4A 431 select CPU_SHX2 432 select ARCH_SHMOBILE 433 select ARCH_SPARSEMEM_ENABLE 434 select SYS_SUPPORTS_SH_CMT 435 select ARCH_WANT_OPTIONAL_GPIOLIB 436 select PINCTRL 437 help 438 Select SH7724 if you have an SH-MobileR2R CPU. 439 440config CPU_SUBTYPE_SH7734 441 bool "Support SH7734 processor" 442 select CPU_SH4A 443 select CPU_SHX2 444 select ARCH_WANT_OPTIONAL_GPIOLIB 445 select PINCTRL 446 help 447 Select SH7734 if you have a SH4A SH7734 CPU. 448 449config CPU_SUBTYPE_SH7757 450 bool "Support SH7757 processor" 451 select CPU_SH4A 452 select CPU_SHX2 453 select ARCH_WANT_OPTIONAL_GPIOLIB 454 select PINCTRL 455 help 456 Select SH7757 if you have a SH4A SH7757 CPU. 457 458config CPU_SUBTYPE_SH7763 459 bool "Support SH7763 processor" 460 select CPU_SH4A 461 select USB_OHCI_SH if USB_OHCI_HCD 462 help 463 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU. 464 465config CPU_SUBTYPE_SH7770 466 bool "Support SH7770 processor" 467 select CPU_SH4A 468 469config CPU_SUBTYPE_SH7780 470 bool "Support SH7780 processor" 471 select CPU_SH4A 472 473config CPU_SUBTYPE_SH7785 474 bool "Support SH7785 processor" 475 select CPU_SH4A 476 select CPU_SHX2 477 select ARCH_SPARSEMEM_ENABLE 478 select SYS_SUPPORTS_NUMA 479 select ARCH_WANT_OPTIONAL_GPIOLIB 480 select PINCTRL 481 482config CPU_SUBTYPE_SH7786 483 bool "Support SH7786 processor" 484 select CPU_SH4A 485 select CPU_SHX3 486 select CPU_HAS_PTEAEX 487 select GENERIC_CLOCKEVENTS_BROADCAST if SMP 488 select ARCH_WANT_OPTIONAL_GPIOLIB 489 select USB_OHCI_SH if USB_OHCI_HCD 490 select USB_EHCI_SH if USB_EHCI_HCD 491 select PINCTRL 492 493config CPU_SUBTYPE_SHX3 494 bool "Support SH-X3 processor" 495 select CPU_SH4A 496 select CPU_SHX3 497 select GENERIC_CLOCKEVENTS_BROADCAST if SMP 498 select ARCH_REQUIRE_GPIOLIB 499 select PINCTRL 500 501# SH4AL-DSP Processor Support 502 503config CPU_SUBTYPE_SH7343 504 bool "Support SH7343 processor" 505 select CPU_SH4AL_DSP 506 select ARCH_SHMOBILE 507 select SYS_SUPPORTS_SH_CMT 508 509config CPU_SUBTYPE_SH7722 510 bool "Support SH7722 processor" 511 select CPU_SH4AL_DSP 512 select CPU_SHX2 513 select ARCH_SHMOBILE 514 select ARCH_SPARSEMEM_ENABLE 515 select SYS_SUPPORTS_NUMA 516 select SYS_SUPPORTS_SH_CMT 517 select ARCH_WANT_OPTIONAL_GPIOLIB 518 select PINCTRL 519 520config CPU_SUBTYPE_SH7366 521 bool "Support SH7366 processor" 522 select CPU_SH4AL_DSP 523 select CPU_SHX2 524 select ARCH_SHMOBILE 525 select ARCH_SPARSEMEM_ENABLE 526 select SYS_SUPPORTS_NUMA 527 select SYS_SUPPORTS_SH_CMT 528 529endchoice 530 531endif 532 533if SUPERH64 534 535choice 536 prompt "Processor sub-type selection" 537 538# SH-5 Processor Support 539 540config CPU_SUBTYPE_SH5_101 541 bool "Support SH5-101 processor" 542 select CPU_SH5 543 544config CPU_SUBTYPE_SH5_103 545 bool "Support SH5-103 processor" 546 select CPU_SH5 547 548endchoice 549 550endif 551 552source "arch/sh/mm/Kconfig" 553 554source "arch/sh/Kconfig.cpu" 555 556source "arch/sh/boards/Kconfig" 557 558menu "Timer and clock configuration" 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 !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \ 587 !CPU_SUBTYPE_SH7269 588 589endmenu 590 591menu "CPU Frequency scaling" 592source "drivers/cpufreq/Kconfig" 593endmenu 594 595source "arch/sh/drivers/Kconfig" 596 597endmenu 598 599menu "Kernel features" 600 601source kernel/Kconfig.hz 602 603config KEXEC 604 bool "kexec system call (EXPERIMENTAL)" 605 depends on SUPERH32 && MMU 606 select KEXEC_CORE 607 help 608 kexec is a system call that implements the ability to shutdown your 609 current kernel, and to start another kernel. It is like a reboot 610 but it is independent of the system firmware. And like a reboot 611 you can start any kernel with it, not just Linux. 612 613 The name comes from the similarity to the exec system call. 614 615 It is an ongoing process to be certain the hardware in a machine 616 is properly shutdown, so do not be surprised if this code does not 617 initially work for you. As of this writing the exact hardware 618 interface is strongly in flux, so no good recommendation can be 619 made. 620 621config CRASH_DUMP 622 bool "kernel crash dumps (EXPERIMENTAL)" 623 depends on SUPERH32 && BROKEN_ON_SMP 624 help 625 Generate crash dump after being started by kexec. 626 This should be normally only set in special crash dump kernels 627 which are loaded in the main kernel with kexec-tools into 628 a specially reserved region and then later executed after 629 a crash by kdump/kexec. The crash dump kernel must be compiled 630 to a memory address not used by the main kernel using 631 PHYSICAL_START. 632 633 For more details see Documentation/kdump/kdump.txt 634 635config KEXEC_JUMP 636 bool "kexec jump (EXPERIMENTAL)" 637 depends on SUPERH32 && KEXEC && HIBERNATION 638 help 639 Jump between original kernel and kexeced kernel and invoke 640 code via KEXEC 641 642config PHYSICAL_START 643 hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP) 644 default MEMORY_START 645 ---help--- 646 This gives the physical address where the kernel is loaded 647 and is ordinarily the same as MEMORY_START. 648 649 Different values are primarily used in the case of kexec on panic 650 where the fail safe kernel needs to run at a different address 651 than the panic-ed kernel. 652 653config SECCOMP 654 bool "Enable seccomp to safely compute untrusted bytecode" 655 depends on PROC_FS 656 help 657 This kernel feature is useful for number crunching applications 658 that may need to compute untrusted bytecode during their 659 execution. By using pipes or other transports made available to 660 the process as file descriptors supporting the read/write 661 syscalls, it's possible to isolate those applications in 662 their own address space using seccomp. Once seccomp is 663 enabled via prctl, it cannot be disabled and the task is only 664 allowed to execute a few safe syscalls defined by each seccomp 665 mode. 666 667 If unsure, say N. 668 669config SMP 670 bool "Symmetric multi-processing support" 671 depends on SYS_SUPPORTS_SMP 672 ---help--- 673 This enables support for systems with more than one CPU. If you have 674 a system with only one CPU, say N. If you have a system with more 675 than one CPU, say Y. 676 677 If you say N here, the kernel will run on uni- and multiprocessor 678 machines, but will use only one CPU of a multiprocessor machine. If 679 you say Y here, the kernel will run on many, but not all, 680 uniprocessor machines. On a uniprocessor machine, the kernel 681 will run faster if you say N here. 682 683 People using multiprocessor machines who say Y here should also say 684 Y to "Enhanced Real Time Clock Support", below. 685 686 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO 687 available at <http://www.tldp.org/docs.html#howto>. 688 689 If you don't know what to do here, say N. 690 691config NR_CPUS 692 int "Maximum number of CPUs (2-32)" 693 range 2 32 694 depends on SMP 695 default "4" if CPU_SUBTYPE_SHX3 696 default "2" 697 help 698 This allows you to specify the maximum number of CPUs which this 699 kernel will support. The maximum supported value is 32 and the 700 minimum value which makes sense is 2. 701 702 This is purely to save memory - each supported CPU adds 703 approximately eight kilobytes to the kernel image. 704 705config HOTPLUG_CPU 706 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" 707 depends on SMP 708 help 709 Say Y here to experiment with turning CPUs off and on. CPUs 710 can be controlled through /sys/devices/system/cpu. 711 712source "kernel/Kconfig.preempt" 713 714config GUSA 715 def_bool y 716 depends on !SMP && SUPERH32 717 help 718 This enables support for gUSA (general UserSpace Atomicity). 719 This is the default implementation for both UP and non-ll/sc 720 CPUs, and is used by the libc, amongst others. 721 722 For additional information, design information can be found 723 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>. 724 725 This should only be disabled for special cases where alternate 726 atomicity implementations exist. 727 728config GUSA_RB 729 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)" 730 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A) 731 help 732 Enabling this option will allow the kernel to implement some 733 atomic operations using a software implementation of load-locked/ 734 store-conditional (LLSC). On machines which do not have hardware 735 LLSC, this should be more efficient than the other alternative of 736 disabling interrupts around the atomic sequence. 737 738config HW_PERF_EVENTS 739 bool "Enable hardware performance counter support for perf events" 740 depends on PERF_EVENTS && CPU_HAS_PMU 741 default y 742 help 743 Enable hardware performance counter support for perf events. If 744 disabled, perf events will use software events only. 745 746source "drivers/sh/Kconfig" 747 748endmenu 749 750menu "Boot options" 751 752config ZERO_PAGE_OFFSET 753 hex 754 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \ 755 SH_7751_SOLUTION_ENGINE 756 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03 757 default "0x00002000" if PAGE_SIZE_8KB 758 default "0x00001000" 759 help 760 This sets the default offset of zero page. 761 762config BOOT_LINK_OFFSET 763 hex 764 default "0x00210000" if SH_SHMIN 765 default "0x00400000" if SH_CAYMAN 766 default "0x00810000" if SH_7780_SOLUTION_ENGINE 767 default "0x009e0000" if SH_TITAN 768 default "0x01800000" if SH_SDK7780 769 default "0x02000000" if SH_EDOSK7760 770 default "0x00800000" 771 help 772 This option allows you to set the link address offset of the zImage. 773 This can be useful if you are on a board which has a small amount of 774 memory. 775 776config ENTRY_OFFSET 777 hex 778 default "0x00001000" if PAGE_SIZE_4KB 779 default "0x00002000" if PAGE_SIZE_8KB 780 default "0x00004000" if PAGE_SIZE_16KB 781 default "0x00010000" if PAGE_SIZE_64KB 782 default "0x00000000" 783 784config ROMIMAGE_MMCIF 785 bool "Include MMCIF loader in romImage (EXPERIMENTAL)" 786 depends on CPU_SUBTYPE_SH7724 787 help 788 Say Y here to include experimental MMCIF loading code in 789 romImage. With this enabled it is possible to write the romImage 790 kernel image to an MMC card and boot the kernel straight from 791 the reset vector. At reset the processor Mask ROM will load the 792 first part of the romImage which in turn loads the rest the kernel 793 image to RAM using the MMCIF hardware block. 794 795choice 796 prompt "Kernel command line" 797 optional 798 default CMDLINE_OVERWRITE 799 help 800 Setting this option allows the kernel command line arguments 801 to be set. 802 803config CMDLINE_OVERWRITE 804 bool "Overwrite bootloader kernel arguments" 805 help 806 Given string will overwrite any arguments passed in by 807 a bootloader. 808 809config CMDLINE_EXTEND 810 bool "Extend bootloader kernel arguments" 811 help 812 Given string will be concatenated with arguments passed in 813 by a bootloader. 814 815endchoice 816 817config CMDLINE 818 string "Kernel command line arguments string" 819 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND 820 default "console=ttySC1,115200" 821 822endmenu 823 824menu "Bus options" 825 826config SUPERHYWAY 827 tristate "SuperHyway Bus support" 828 depends on CPU_SUBTYPE_SH4_202 829 830config MAPLE 831 bool "Maple Bus support" 832 depends on SH_DREAMCAST 833 help 834 The Maple Bus is SEGA's serial communication bus for peripherals 835 on the Dreamcast. Without this bus support you won't be able to 836 get your Dreamcast keyboard etc to work, so most users 837 probably want to say 'Y' here, unless you are only using the 838 Dreamcast with a serial line terminal or a remote network 839 connection. 840 841config PCI 842 bool "PCI support" 843 depends on SYS_SUPPORTS_PCI 844 select PCI_DOMAINS 845 select GENERIC_PCI_IOMAP 846 select NO_GENERIC_PCI_IOPORT_MAP 847 help 848 Find out whether you have a PCI motherboard. PCI is the name of a 849 bus system, i.e. the way the CPU talks to the other stuff inside 850 your box. If you have PCI, say Y, otherwise N. 851 852config PCI_DOMAINS 853 bool 854 855source "drivers/pci/pcie/Kconfig" 856 857source "drivers/pci/Kconfig" 858 859source "drivers/pcmcia/Kconfig" 860 861source "drivers/pci/hotplug/Kconfig" 862 863endmenu 864 865menu "Executable file formats" 866 867source "fs/Kconfig.binfmt" 868 869endmenu 870 871menu "Power management options (EXPERIMENTAL)" 872 873source "kernel/power/Kconfig" 874 875source "drivers/cpuidle/Kconfig" 876 877endmenu 878 879source "net/Kconfig" 880 881source "drivers/Kconfig" 882 883source "fs/Kconfig" 884 885source "arch/sh/Kconfig.debug" 886 887source "security/Kconfig" 888 889source "crypto/Kconfig" 890 891source "lib/Kconfig" 892