1config SUPERH 2 def_bool y 3 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST 4 select ARCH_MIGHT_HAVE_PC_PARPORT 5 select ARCH_NO_COHERENT_DMA_MMAP if !MMU 6 select HAVE_PATA_PLATFORM 7 select CLKDEV_LOOKUP 8 select HAVE_IDE if HAS_IOPORT_MAP 9 select HAVE_MEMBLOCK 10 select HAVE_MEMBLOCK_NODE_MAP 11 select ARCH_DISCARD_MEMBLOCK 12 select HAVE_OPROFILE 13 select HAVE_GENERIC_DMA_COHERENT 14 select HAVE_ARCH_TRACEHOOK 15 select HAVE_DMA_API_DEBUG 16 select HAVE_PERF_EVENTS 17 select HAVE_DEBUG_BUGVERBOSE 18 select ARCH_HAVE_CUSTOM_GPIO_H 19 select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A) 20 select ARCH_HAS_GCOV_PROFILE_ALL 21 select PERF_USE_VMALLOC 22 select HAVE_DEBUG_KMEMLEAK 23 select HAVE_KERNEL_GZIP 24 select CPU_NO_EFFICIENT_FFS 25 select HAVE_KERNEL_BZIP2 26 select HAVE_KERNEL_LZMA 27 select HAVE_KERNEL_XZ 28 select HAVE_KERNEL_LZO 29 select HAVE_UID16 30 select ARCH_WANT_IPC_PARSE_VERSION 31 select HAVE_SYSCALL_TRACEPOINTS 32 select HAVE_REGS_AND_STACK_ACCESS_API 33 select MAY_HAVE_SPARSE_IRQ 34 select IRQ_FORCED_THREADING 35 select RTC_LIB 36 select GENERIC_ATOMIC64 37 select GENERIC_IRQ_SHOW 38 select GENERIC_SMP_IDLE_THREAD 39 select GENERIC_IDLE_POLL_SETUP 40 select GENERIC_CLOCKEVENTS 41 select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST 42 select GENERIC_SCHED_CLOCK 43 select GENERIC_STRNCPY_FROM_USER 44 select GENERIC_STRNLEN_USER 45 select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER 46 select MODULES_USE_ELF_RELA 47 select OLD_SIGSUSPEND 48 select OLD_SIGACTION 49 select HAVE_ARCH_AUDITSYSCALL 50 select HAVE_FUTEX_CMPXCHG if FUTEX 51 select HAVE_NMI 52 help 53 The SuperH is a RISC processor targeted for use in embedded systems 54 and consumer electronics; it was also used in the Sega Dreamcast 55 gaming console. The SuperH port has a home page at 56 <http://www.linux-sh.org/>. 57 58config SUPERH32 59 def_bool ARCH = "sh" 60 select HAVE_KPROBES 61 select HAVE_KRETPROBES 62 select HAVE_IOREMAP_PROT if MMU && !X2TLB 63 select HAVE_FUNCTION_TRACER 64 select HAVE_FTRACE_MCOUNT_RECORD 65 select HAVE_DYNAMIC_FTRACE 66 select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE 67 select ARCH_WANT_IPC_PARSE_VERSION 68 select HAVE_FUNCTION_GRAPH_TRACER 69 select HAVE_ARCH_KGDB 70 select HAVE_HW_BREAKPOINT 71 select HAVE_MIXED_BREAKPOINTS_REGS 72 select PERF_EVENTS 73 select ARCH_HIBERNATION_POSSIBLE if MMU 74 select SPARSE_IRQ 75 select HAVE_CC_STACKPROTECTOR 76 77config SUPERH64 78 def_bool ARCH = "sh64" 79 select HAVE_EXIT_THREAD 80 select KALLSYMS 81 82config ARCH_DEFCONFIG 83 string 84 default "arch/sh/configs/shx3_defconfig" if SUPERH32 85 default "arch/sh/configs/cayman_defconfig" if SUPERH64 86 87config RWSEM_GENERIC_SPINLOCK 88 def_bool y 89 90config RWSEM_XCHGADD_ALGORITHM 91 bool 92 93config GENERIC_BUG 94 def_bool y 95 depends on BUG && SUPERH32 96 97config GENERIC_CSUM 98 def_bool y 99 depends on SUPERH64 100 101config GENERIC_HWEIGHT 102 def_bool y 103 104config GENERIC_CALIBRATE_DELAY 105 bool 106 107config GENERIC_LOCKBREAK 108 def_bool y 109 depends on SMP && PREEMPT 110 111config ARCH_SUSPEND_POSSIBLE 112 def_bool n 113 114config ARCH_HIBERNATION_POSSIBLE 115 def_bool n 116 117config SYS_SUPPORTS_APM_EMULATION 118 bool 119 select ARCH_SUSPEND_POSSIBLE 120 121config SYS_SUPPORTS_HUGETLBFS 122 bool 123 124config SYS_SUPPORTS_SMP 125 bool 126 127config SYS_SUPPORTS_NUMA 128 bool 129 130config SYS_SUPPORTS_PCI 131 bool 132 133config STACKTRACE_SUPPORT 134 def_bool y 135 136config LOCKDEP_SUPPORT 137 def_bool y 138 139config ARCH_HAS_ILOG2_U32 140 def_bool n 141 142config ARCH_HAS_ILOG2_U64 143 def_bool n 144 145config NO_IOPORT_MAP 146 def_bool !PCI 147 depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN && \ 148 !SH_HP6XX && !SH_SOLUTION_ENGINE 149 150config IO_TRAPPED 151 bool 152 153config SWAP_IO_SPACE 154 bool 155 156config DMA_COHERENT 157 bool 158 159config DMA_NONCOHERENT 160 def_bool !DMA_COHERENT 161 162config NEED_DMA_MAP_STATE 163 def_bool DMA_NONCOHERENT 164 165config NEED_SG_DMA_LENGTH 166 def_bool y 167 168config PGTABLE_LEVELS 169 default 3 if X2TLB 170 default 2 171 172source "init/Kconfig" 173 174source "kernel/Kconfig.freezer" 175 176menu "System type" 177 178# 179# Processor families 180# 181config CPU_SH2 182 bool 183 select SH_INTC 184 185config CPU_SH2A 186 bool 187 select CPU_SH2 188 select UNCACHED_MAPPING 189 190config CPU_J2 191 bool 192 select CPU_SH2 193 select OF 194 select OF_EARLY_FLATTREE 195 196config CPU_SH3 197 bool 198 select CPU_HAS_INTEVT 199 select CPU_HAS_SR_RB 200 select SH_INTC 201 select SYS_SUPPORTS_SH_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 SH_INTC 209 select SYS_SUPPORTS_SH_TMU 210 select SYS_SUPPORTS_HUGETLBFS if MMU 211 212config CPU_SH4A 213 bool 214 select CPU_SH4 215 216config CPU_SH4AL_DSP 217 bool 218 select CPU_SH4A 219 select CPU_HAS_DSP 220 221config CPU_SH5 222 bool 223 select CPU_HAS_FPU 224 select SYS_SUPPORTS_SH_TMU 225 select SYS_SUPPORTS_HUGETLBFS if MMU 226 227config CPU_SHX2 228 bool 229 230config CPU_SHX3 231 bool 232 select DMA_COHERENT 233 select SYS_SUPPORTS_SMP 234 select SYS_SUPPORTS_NUMA 235 236config ARCH_SHMOBILE 237 bool 238 select ARCH_SUSPEND_POSSIBLE 239 select PM 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_SH_CMT 261 262config CPU_SUBTYPE_J2 263 bool "Support J2 processor" 264 select CPU_J2 265 select SYS_SUPPORTS_SMP 266 select GENERIC_CLOCKEVENTS_BROADCAST if SMP 267 268# SH-2A Processor Support 269 270config CPU_SUBTYPE_SH7201 271 bool "Support SH7201 processor" 272 select CPU_SH2A 273 select CPU_HAS_FPU 274 select SYS_SUPPORTS_SH_MTU2 275 276config CPU_SUBTYPE_SH7203 277 bool "Support SH7203 processor" 278 select CPU_SH2A 279 select CPU_HAS_FPU 280 select SYS_SUPPORTS_SH_CMT 281 select SYS_SUPPORTS_SH_MTU2 282 select PINCTRL 283 284config CPU_SUBTYPE_SH7206 285 bool "Support SH7206 processor" 286 select CPU_SH2A 287 select SYS_SUPPORTS_SH_CMT 288 select SYS_SUPPORTS_SH_MTU2 289 290config CPU_SUBTYPE_SH7263 291 bool "Support SH7263 processor" 292 select CPU_SH2A 293 select CPU_HAS_FPU 294 select SYS_SUPPORTS_SH_CMT 295 select SYS_SUPPORTS_SH_MTU2 296 297config CPU_SUBTYPE_SH7264 298 bool "Support SH7264 processor" 299 select CPU_SH2A 300 select CPU_HAS_FPU 301 select SYS_SUPPORTS_SH_CMT 302 select SYS_SUPPORTS_SH_MTU2 303 select PINCTRL 304 305config CPU_SUBTYPE_SH7269 306 bool "Support SH7269 processor" 307 select CPU_SH2A 308 select CPU_HAS_FPU 309 select SYS_SUPPORTS_SH_CMT 310 select SYS_SUPPORTS_SH_MTU2 311 select PINCTRL 312 313config CPU_SUBTYPE_MXG 314 bool "Support MX-G processor" 315 select CPU_SH2A 316 select SYS_SUPPORTS_SH_MTU2 317 help 318 Select MX-G if running on an R8A03022BG part. 319 320# SH-3 Processor Support 321 322config CPU_SUBTYPE_SH7705 323 bool "Support SH7705 processor" 324 select CPU_SH3 325 326config CPU_SUBTYPE_SH7706 327 bool "Support SH7706 processor" 328 select CPU_SH3 329 help 330 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU. 331 332config CPU_SUBTYPE_SH7707 333 bool "Support SH7707 processor" 334 select CPU_SH3 335 help 336 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU. 337 338config CPU_SUBTYPE_SH7708 339 bool "Support SH7708 processor" 340 select CPU_SH3 341 help 342 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or 343 if you have a 100 Mhz SH-3 HD6417708R CPU. 344 345config CPU_SUBTYPE_SH7709 346 bool "Support SH7709 processor" 347 select CPU_SH3 348 help 349 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU. 350 351config CPU_SUBTYPE_SH7710 352 bool "Support SH7710 processor" 353 select CPU_SH3 354 select CPU_HAS_DSP 355 help 356 Select SH7710 if you have a SH3-DSP SH7710 CPU. 357 358config CPU_SUBTYPE_SH7712 359 bool "Support SH7712 processor" 360 select CPU_SH3 361 select CPU_HAS_DSP 362 help 363 Select SH7712 if you have a SH3-DSP SH7712 CPU. 364 365config CPU_SUBTYPE_SH7720 366 bool "Support SH7720 processor" 367 select CPU_SH3 368 select CPU_HAS_DSP 369 select SYS_SUPPORTS_SH_CMT 370 select USB_OHCI_SH if USB_OHCI_HCD 371 select PINCTRL 372 help 373 Select SH7720 if you have a SH3-DSP SH7720 CPU. 374 375config CPU_SUBTYPE_SH7721 376 bool "Support SH7721 processor" 377 select CPU_SH3 378 select CPU_HAS_DSP 379 select SYS_SUPPORTS_SH_CMT 380 select USB_OHCI_SH if USB_OHCI_HCD 381 help 382 Select SH7721 if you have a SH3-DSP SH7721 CPU. 383 384# SH-4 Processor Support 385 386config CPU_SUBTYPE_SH7750 387 bool "Support SH7750 processor" 388 select CPU_SH4 389 help 390 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU. 391 392config CPU_SUBTYPE_SH7091 393 bool "Support SH7091 processor" 394 select CPU_SH4 395 help 396 Select SH7091 if you have an SH-4 based Sega device (such as 397 the Dreamcast, Naomi, and Naomi 2). 398 399config CPU_SUBTYPE_SH7750R 400 bool "Support SH7750R processor" 401 select CPU_SH4 402 403config CPU_SUBTYPE_SH7750S 404 bool "Support SH7750S processor" 405 select CPU_SH4 406 407config CPU_SUBTYPE_SH7751 408 bool "Support SH7751 processor" 409 select CPU_SH4 410 help 411 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU, 412 or if you have a HD6417751R CPU. 413 414config CPU_SUBTYPE_SH7751R 415 bool "Support SH7751R processor" 416 select CPU_SH4 417 418config CPU_SUBTYPE_SH7760 419 bool "Support SH7760 processor" 420 select CPU_SH4 421 422config CPU_SUBTYPE_SH4_202 423 bool "Support SH4-202 processor" 424 select CPU_SH4 425 426# SH-4A Processor Support 427 428config CPU_SUBTYPE_SH7723 429 bool "Support SH7723 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 PINCTRL 436 help 437 Select SH7723 if you have an SH-MobileR2 CPU. 438 439config CPU_SUBTYPE_SH7724 440 bool "Support SH7724 processor" 441 select CPU_SH4A 442 select CPU_SHX2 443 select ARCH_SHMOBILE 444 select ARCH_SPARSEMEM_ENABLE 445 select SYS_SUPPORTS_SH_CMT 446 select PINCTRL 447 help 448 Select SH7724 if you have an SH-MobileR2R CPU. 449 450config CPU_SUBTYPE_SH7734 451 bool "Support SH7734 processor" 452 select CPU_SH4A 453 select CPU_SHX2 454 select PINCTRL 455 help 456 Select SH7734 if you have a SH4A SH7734 CPU. 457 458config CPU_SUBTYPE_SH7757 459 bool "Support SH7757 processor" 460 select CPU_SH4A 461 select CPU_SHX2 462 select PINCTRL 463 help 464 Select SH7757 if you have a SH4A SH7757 CPU. 465 466config CPU_SUBTYPE_SH7763 467 bool "Support SH7763 processor" 468 select CPU_SH4A 469 select USB_OHCI_SH if USB_OHCI_HCD 470 help 471 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU. 472 473config CPU_SUBTYPE_SH7770 474 bool "Support SH7770 processor" 475 select CPU_SH4A 476 477config CPU_SUBTYPE_SH7780 478 bool "Support SH7780 processor" 479 select CPU_SH4A 480 481config CPU_SUBTYPE_SH7785 482 bool "Support SH7785 processor" 483 select CPU_SH4A 484 select CPU_SHX2 485 select ARCH_SPARSEMEM_ENABLE 486 select SYS_SUPPORTS_NUMA 487 select PINCTRL 488 489config CPU_SUBTYPE_SH7786 490 bool "Support SH7786 processor" 491 select CPU_SH4A 492 select CPU_SHX3 493 select CPU_HAS_PTEAEX 494 select GENERIC_CLOCKEVENTS_BROADCAST if SMP 495 select USB_OHCI_SH if USB_OHCI_HCD 496 select USB_EHCI_SH if USB_EHCI_HCD 497 select PINCTRL 498 499config CPU_SUBTYPE_SHX3 500 bool "Support SH-X3 processor" 501 select CPU_SH4A 502 select CPU_SHX3 503 select GENERIC_CLOCKEVENTS_BROADCAST if SMP 504 select GPIOLIB 505 select PINCTRL 506 507# SH4AL-DSP Processor Support 508 509config CPU_SUBTYPE_SH7343 510 bool "Support SH7343 processor" 511 select CPU_SH4AL_DSP 512 select ARCH_SHMOBILE 513 select SYS_SUPPORTS_SH_CMT 514 515config CPU_SUBTYPE_SH7722 516 bool "Support SH7722 processor" 517 select CPU_SH4AL_DSP 518 select CPU_SHX2 519 select ARCH_SHMOBILE 520 select ARCH_SPARSEMEM_ENABLE 521 select SYS_SUPPORTS_NUMA 522 select SYS_SUPPORTS_SH_CMT 523 select PINCTRL 524 525config CPU_SUBTYPE_SH7366 526 bool "Support SH7366 processor" 527 select CPU_SH4AL_DSP 528 select CPU_SHX2 529 select ARCH_SHMOBILE 530 select ARCH_SPARSEMEM_ENABLE 531 select SYS_SUPPORTS_NUMA 532 select SYS_SUPPORTS_SH_CMT 533 534endchoice 535 536endif 537 538if SUPERH64 539 540choice 541 prompt "Processor sub-type selection" 542 543# SH-5 Processor Support 544 545config CPU_SUBTYPE_SH5_101 546 bool "Support SH5-101 processor" 547 select CPU_SH5 548 549config CPU_SUBTYPE_SH5_103 550 bool "Support SH5-103 processor" 551 select CPU_SH5 552 553endchoice 554 555endif 556 557source "arch/sh/mm/Kconfig" 558 559source "arch/sh/Kconfig.cpu" 560 561source "arch/sh/boards/Kconfig" 562 563menu "Timer and clock configuration" 564 565config SH_PCLK_FREQ 566 int "Peripheral clock frequency (in Hz)" 567 depends on SH_CLK_CPG_LEGACY 568 default "31250000" if CPU_SUBTYPE_SH7619 569 default "33333333" if CPU_SUBTYPE_SH7770 || \ 570 CPU_SUBTYPE_SH7760 || \ 571 CPU_SUBTYPE_SH7705 || \ 572 CPU_SUBTYPE_SH7203 || \ 573 CPU_SUBTYPE_SH7206 || \ 574 CPU_SUBTYPE_SH7263 || \ 575 CPU_SUBTYPE_MXG 576 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R 577 default "66000000" if CPU_SUBTYPE_SH4_202 578 default "50000000" 579 help 580 This option is used to specify the peripheral clock frequency. 581 This is necessary for determining the reference clock value on 582 platforms lacking an RTC. 583 584config SH_CLK_CPG 585 def_bool y 586 587config SH_CLK_CPG_LEGACY 588 depends on SH_CLK_CPG 589 def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \ 590 !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \ 591 !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \ 592 !CPU_SUBTYPE_SH7269 593 594endmenu 595 596menu "CPU Frequency scaling" 597source "drivers/cpufreq/Kconfig" 598endmenu 599 600source "arch/sh/drivers/Kconfig" 601 602endmenu 603 604menu "Kernel features" 605 606source kernel/Kconfig.hz 607 608config KEXEC 609 bool "kexec system call (EXPERIMENTAL)" 610 depends on SUPERH32 && MMU 611 select KEXEC_CORE 612 help 613 kexec is a system call that implements the ability to shutdown your 614 current kernel, and to start another kernel. It is like a reboot 615 but it is independent of the system firmware. And like a reboot 616 you can start any kernel with it, not just Linux. 617 618 The name comes from the similarity to the exec system call. 619 620 It is an ongoing process to be certain the hardware in a machine 621 is properly shutdown, so do not be surprised if this code does not 622 initially work for you. As of this writing the exact hardware 623 interface is strongly in flux, so no good recommendation can be 624 made. 625 626config CRASH_DUMP 627 bool "kernel crash dumps (EXPERIMENTAL)" 628 depends on SUPERH32 && BROKEN_ON_SMP 629 help 630 Generate crash dump after being started by kexec. 631 This should be normally only set in special crash dump kernels 632 which are loaded in the main kernel with kexec-tools into 633 a specially reserved region and then later executed after 634 a crash by kdump/kexec. The crash dump kernel must be compiled 635 to a memory address not used by the main kernel using 636 PHYSICAL_START. 637 638 For more details see Documentation/kdump/kdump.txt 639 640config KEXEC_JUMP 641 bool "kexec jump (EXPERIMENTAL)" 642 depends on SUPERH32 && KEXEC && HIBERNATION 643 help 644 Jump between original kernel and kexeced kernel and invoke 645 code via KEXEC 646 647config PHYSICAL_START 648 hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP) 649 default MEMORY_START 650 ---help--- 651 This gives the physical address where the kernel is loaded 652 and is ordinarily the same as MEMORY_START. 653 654 Different values are primarily used in the case of kexec on panic 655 where the fail safe kernel needs to run at a different address 656 than the panic-ed kernel. 657 658config SECCOMP 659 bool "Enable seccomp to safely compute untrusted bytecode" 660 depends on PROC_FS 661 help 662 This kernel feature is useful for number crunching applications 663 that may need to compute untrusted bytecode during their 664 execution. By using pipes or other transports made available to 665 the process as file descriptors supporting the read/write 666 syscalls, it's possible to isolate those applications in 667 their own address space using seccomp. Once seccomp is 668 enabled via prctl, it cannot be disabled and the task is only 669 allowed to execute a few safe syscalls defined by each seccomp 670 mode. 671 672 If unsure, say N. 673 674config SMP 675 bool "Symmetric multi-processing support" 676 depends on SYS_SUPPORTS_SMP 677 ---help--- 678 This enables support for systems with more than one CPU. If you have 679 a system with only one CPU, say N. If you have a system with more 680 than one CPU, say Y. 681 682 If you say N here, the kernel will run on uni- and multiprocessor 683 machines, but will use only one CPU of a multiprocessor machine. If 684 you say Y here, the kernel will run on many, but not all, 685 uniprocessor machines. On a uniprocessor machine, the kernel 686 will run faster if you say N here. 687 688 People using multiprocessor machines who say Y here should also say 689 Y to "Enhanced Real Time Clock Support", below. 690 691 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO 692 available at <http://www.tldp.org/docs.html#howto>. 693 694 If you don't know what to do here, say N. 695 696config NR_CPUS 697 int "Maximum number of CPUs (2-32)" 698 range 2 32 699 depends on SMP 700 default "4" if CPU_SUBTYPE_SHX3 701 default "2" 702 help 703 This allows you to specify the maximum number of CPUs which this 704 kernel will support. The maximum supported value is 32 and the 705 minimum value which makes sense is 2. 706 707 This is purely to save memory - each supported CPU adds 708 approximately eight kilobytes to the kernel image. 709 710config HOTPLUG_CPU 711 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" 712 depends on SMP 713 help 714 Say Y here to experiment with turning CPUs off and on. CPUs 715 can be controlled through /sys/devices/system/cpu. 716 717source "kernel/Kconfig.preempt" 718 719config GUSA 720 def_bool y 721 depends on !SMP && SUPERH32 722 help 723 This enables support for gUSA (general UserSpace Atomicity). 724 This is the default implementation for both UP and non-ll/sc 725 CPUs, and is used by the libc, amongst others. 726 727 For additional information, design information can be found 728 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>. 729 730 This should only be disabled for special cases where alternate 731 atomicity implementations exist. 732 733config GUSA_RB 734 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)" 735 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A) 736 help 737 Enabling this option will allow the kernel to implement some 738 atomic operations using a software implementation of load-locked/ 739 store-conditional (LLSC). On machines which do not have hardware 740 LLSC, this should be more efficient than the other alternative of 741 disabling interrupts around the atomic sequence. 742 743config HW_PERF_EVENTS 744 bool "Enable hardware performance counter support for perf events" 745 depends on PERF_EVENTS && CPU_HAS_PMU 746 default y 747 help 748 Enable hardware performance counter support for perf events. If 749 disabled, perf events will use software events only. 750 751source "drivers/sh/Kconfig" 752 753endmenu 754 755menu "Boot options" 756 757config USE_BUILTIN_DTB 758 bool "Use builtin DTB" 759 default n 760 depends on SH_DEVICE_TREE 761 help 762 Link a device tree blob for particular hardware into the kernel, 763 suppressing use of the DTB pointer provided by the bootloader. 764 This option should only be used with legacy bootloaders that are 765 not capable of providing a DTB to the kernel, or for experimental 766 hardware without stable device tree bindings. 767 768config BUILTIN_DTB_SOURCE 769 string "Source file for builtin DTB" 770 default "" 771 depends on USE_BUILTIN_DTB 772 help 773 Base name (without suffix, relative to arch/sh/boot/dts) for the 774 a DTS file that will be used to produce the DTB linked into the 775 kernel. 776 777config ZERO_PAGE_OFFSET 778 hex 779 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \ 780 SH_7751_SOLUTION_ENGINE 781 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03 782 default "0x00002000" if PAGE_SIZE_8KB 783 default "0x00001000" 784 help 785 This sets the default offset of zero page. 786 787config BOOT_LINK_OFFSET 788 hex 789 default "0x00210000" if SH_SHMIN 790 default "0x00400000" if SH_CAYMAN 791 default "0x00810000" if SH_7780_SOLUTION_ENGINE 792 default "0x009e0000" if SH_TITAN 793 default "0x01800000" if SH_SDK7780 794 default "0x02000000" if SH_EDOSK7760 795 default "0x00800000" 796 help 797 This option allows you to set the link address offset of the zImage. 798 This can be useful if you are on a board which has a small amount of 799 memory. 800 801config ENTRY_OFFSET 802 hex 803 default "0x00001000" if PAGE_SIZE_4KB 804 default "0x00002000" if PAGE_SIZE_8KB 805 default "0x00004000" if PAGE_SIZE_16KB 806 default "0x00010000" if PAGE_SIZE_64KB 807 default "0x00000000" 808 809config ROMIMAGE_MMCIF 810 bool "Include MMCIF loader in romImage (EXPERIMENTAL)" 811 depends on CPU_SUBTYPE_SH7724 812 help 813 Say Y here to include experimental MMCIF loading code in 814 romImage. With this enabled it is possible to write the romImage 815 kernel image to an MMC card and boot the kernel straight from 816 the reset vector. At reset the processor Mask ROM will load the 817 first part of the romImage which in turn loads the rest the kernel 818 image to RAM using the MMCIF hardware block. 819 820choice 821 prompt "Kernel command line" 822 optional 823 default CMDLINE_OVERWRITE 824 help 825 Setting this option allows the kernel command line arguments 826 to be set. 827 828config CMDLINE_OVERWRITE 829 bool "Overwrite bootloader kernel arguments" 830 help 831 Given string will overwrite any arguments passed in by 832 a bootloader. 833 834config CMDLINE_EXTEND 835 bool "Extend bootloader kernel arguments" 836 help 837 Given string will be concatenated with arguments passed in 838 by a bootloader. 839 840endchoice 841 842config CMDLINE 843 string "Kernel command line arguments string" 844 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND 845 default "console=ttySC1,115200" 846 847endmenu 848 849menu "Bus options" 850 851config SUPERHYWAY 852 tristate "SuperHyway Bus support" 853 depends on CPU_SUBTYPE_SH4_202 854 855config MAPLE 856 bool "Maple Bus support" 857 depends on SH_DREAMCAST 858 help 859 The Maple Bus is SEGA's serial communication bus for peripherals 860 on the Dreamcast. Without this bus support you won't be able to 861 get your Dreamcast keyboard etc to work, so most users 862 probably want to say 'Y' here, unless you are only using the 863 Dreamcast with a serial line terminal or a remote network 864 connection. 865 866config PCI 867 bool "PCI support" 868 depends on SYS_SUPPORTS_PCI 869 select PCI_DOMAINS 870 select GENERIC_PCI_IOMAP 871 select NO_GENERIC_PCI_IOPORT_MAP 872 help 873 Find out whether you have a PCI motherboard. PCI is the name of a 874 bus system, i.e. the way the CPU talks to the other stuff inside 875 your box. If you have PCI, say Y, otherwise N. 876 877config PCI_DOMAINS 878 bool 879 880source "drivers/pci/Kconfig" 881 882source "drivers/pcmcia/Kconfig" 883 884endmenu 885 886menu "Executable file formats" 887 888source "fs/Kconfig.binfmt" 889 890endmenu 891 892menu "Power management options (EXPERIMENTAL)" 893 894source "kernel/power/Kconfig" 895 896source "drivers/cpuidle/Kconfig" 897 898endmenu 899 900source "net/Kconfig" 901 902source "drivers/Kconfig" 903 904source "fs/Kconfig" 905 906source "arch/sh/Kconfig.debug" 907 908source "security/Kconfig" 909 910source "crypto/Kconfig" 911 912source "lib/Kconfig" 913