1config 64BIT 2 bool "64-bit kernel" if ARCH = "sparc" 3 default ARCH = "sparc64" 4 help 5 SPARC is a family of RISC microprocessors designed and marketed by 6 Sun Microsystems, incorporated. They are very widely found in Sun 7 workstations and clones. 8 9 Say yes to build a 64-bit kernel - formerly known as sparc64 10 Say no to build a 32-bit kernel - formerly known as sparc 11 12config SPARC 13 bool 14 default y 15 select OF 16 select OF_PROMTREE 17 select HAVE_IDE 18 select HAVE_OPROFILE 19 select HAVE_ARCH_KGDB if !SMP || SPARC64 20 select HAVE_ARCH_TRACEHOOK 21 select ARCH_WANT_OPTIONAL_GPIOLIB 22 select RTC_CLASS 23 select RTC_DRV_M48T59 24 select HAVE_IRQ_WORK 25 select HAVE_DMA_ATTRS 26 select HAVE_DMA_API_DEBUG 27 select HAVE_ARCH_JUMP_LABEL 28 select HAVE_GENERIC_HARDIRQS 29 select GENERIC_IRQ_SHOW 30 select USE_GENERIC_SMP_HELPERS if SMP 31 select GENERIC_PCI_IOMAP 32 select HAVE_NMI_WATCHDOG if SPARC64 33 34config SPARC32 35 def_bool !64BIT 36 select GENERIC_ATOMIC64 37 select CLZ_TAB 38 39config SPARC64 40 def_bool 64BIT 41 select ARCH_SUPPORTS_MSI 42 select HAVE_FUNCTION_TRACER 43 select HAVE_FUNCTION_GRAPH_TRACER 44 select HAVE_FUNCTION_GRAPH_FP_TEST 45 select HAVE_FUNCTION_TRACE_MCOUNT_TEST 46 select HAVE_KRETPROBES 47 select HAVE_KPROBES 48 select HAVE_RCU_TABLE_FREE if SMP 49 select HAVE_MEMBLOCK 50 select HAVE_MEMBLOCK_NODE_MAP 51 select HAVE_SYSCALL_WRAPPERS 52 select HAVE_DYNAMIC_FTRACE 53 select HAVE_FTRACE_MCOUNT_RECORD 54 select HAVE_SYSCALL_TRACEPOINTS 55 select RTC_DRV_CMOS 56 select RTC_DRV_BQ4802 57 select RTC_DRV_SUN4V 58 select RTC_DRV_STARFIRE 59 select HAVE_PERF_EVENTS 60 select PERF_USE_VMALLOC 61 select IRQ_PREFLOW_FASTEOI 62 select ARCH_HAVE_NMI_SAFE_CMPXCHG 63 select HAVE_C_RECORDMCOUNT 64 65config ARCH_DEFCONFIG 66 string 67 default "arch/sparc/configs/sparc32_defconfig" if SPARC32 68 default "arch/sparc/configs/sparc64_defconfig" if SPARC64 69 70# CONFIG_BITS can be used at source level to get 32/64 bits 71config BITS 72 int 73 default 32 if SPARC32 74 default 64 if SPARC64 75 76config ARCH_USES_GETTIMEOFFSET 77 bool 78 default y if SPARC32 79 80config GENERIC_CMOS_UPDATE 81 bool 82 default y 83 84config GENERIC_CLOCKEVENTS 85 bool 86 default y if SPARC64 87 88config IOMMU_HELPER 89 bool 90 default y if SPARC64 91 92config STACKTRACE_SUPPORT 93 bool 94 default y if SPARC64 95 96config LOCKDEP_SUPPORT 97 bool 98 default y if SPARC64 99 100config HAVE_LATENCYTOP_SUPPORT 101 bool 102 default y if SPARC64 103 104config AUDIT_ARCH 105 bool 106 default y 107 108config HAVE_SETUP_PER_CPU_AREA 109 def_bool y if SPARC64 110 111config NEED_PER_CPU_EMBED_FIRST_CHUNK 112 def_bool y if SPARC64 113 114config NEED_PER_CPU_PAGE_FIRST_CHUNK 115 def_bool y if SPARC64 116 117config MMU 118 bool 119 default y 120 121config HIGHMEM 122 bool 123 default y if SPARC32 124 125config ZONE_DMA 126 bool 127 default y if SPARC32 128 129config NEED_DMA_MAP_STATE 130 def_bool y 131 132config NEED_SG_DMA_LENGTH 133 def_bool y 134 135config GENERIC_ISA_DMA 136 bool 137 default y if SPARC32 138 139config GENERIC_GPIO 140 bool 141 help 142 Generic GPIO API support 143 144config ARCH_NO_VIRT_TO_BUS 145 def_bool y 146 147config ARCH_SUPPORTS_DEBUG_PAGEALLOC 148 def_bool y if SPARC64 149 150source "init/Kconfig" 151 152source "kernel/Kconfig.freezer" 153 154menu "Processor type and features" 155 156config SMP 157 bool "Symmetric multi-processing support (does not work on sun4/sun4c)" 158 ---help--- 159 This enables support for systems with more than one CPU. If you have 160 a system with only one CPU, say N. If you have a system with more 161 than one CPU, say Y. 162 163 If you say N here, the kernel will run on single and multiprocessor 164 machines, but will use only one CPU of a multiprocessor machine. If 165 you say Y here, the kernel will run on many, but not all, 166 singleprocessor machines. On a singleprocessor machine, the kernel 167 will run faster if you say N here. 168 169 People using multiprocessor machines who say Y here should also say 170 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power 171 Management" code will be disabled if you say Y here. 172 173 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO 174 available at <http://www.tldp.org/docs.html#howto>. 175 176 If you don't know what to do here, say N. 177 178config NR_CPUS 179 int "Maximum number of CPUs" 180 depends on SMP 181 range 2 32 if SPARC32 182 range 2 1024 if SPARC64 183 default 32 if SPARC32 184 default 64 if SPARC64 185 186source kernel/Kconfig.hz 187 188config RWSEM_GENERIC_SPINLOCK 189 bool 190 default y if SPARC32 191 192config RWSEM_XCHGADD_ALGORITHM 193 bool 194 default y if SPARC64 195 196config GENERIC_HWEIGHT 197 bool 198 default y if !ULTRA_HAS_POPULATION_COUNT 199 200config GENERIC_CALIBRATE_DELAY 201 bool 202 default y 203 204config ARCH_MAY_HAVE_PC_FDC 205 bool 206 default y 207 208config EMULATED_CMPXCHG 209 bool 210 default y if SPARC32 211 help 212 Sparc32 does not have a CAS instruction like sparc64. cmpxchg() 213 is emulated, and therefore it is not completely atomic. 214 215# Makefile helpers 216config SPARC32_SMP 217 bool 218 default y 219 depends on SPARC32 && SMP 220 221config SPARC64_SMP 222 bool 223 default y 224 depends on SPARC64 && SMP 225 226config EARLYFB 227 bool "Support for early boot text console" 228 default y 229 depends on SPARC64 230 help 231 Say Y here to enable a faster early framebuffer boot console. 232 233choice 234 prompt "Kernel page size" if SPARC64 235 default SPARC64_PAGE_SIZE_8KB 236 237config SPARC64_PAGE_SIZE_8KB 238 bool "8KB" 239 help 240 This lets you select the page size of the kernel. 241 242 8KB and 64KB work quite well, since SPARC ELF sections 243 provide for up to 64KB alignment. 244 245 If you don't know what to do, choose 8KB. 246 247config SPARC64_PAGE_SIZE_64KB 248 bool "64KB" 249 250endchoice 251 252config SECCOMP 253 bool "Enable seccomp to safely compute untrusted bytecode" 254 depends on SPARC64 && PROC_FS 255 default y 256 help 257 This kernel feature is useful for number crunching applications 258 that may need to compute untrusted bytecode during their 259 execution. By using pipes or other transports made available to 260 the process as file descriptors supporting the read/write 261 syscalls, it's possible to isolate those applications in 262 their own address space using seccomp. Once seccomp is 263 enabled via /proc/<pid>/seccomp, it cannot be disabled 264 and the task is only allowed to execute a few safe syscalls 265 defined by each seccomp mode. 266 267 If unsure, say Y. Only embedded should say N here. 268 269config HOTPLUG_CPU 270 bool "Support for hot-pluggable CPUs" 271 depends on SPARC64 && SMP 272 select HOTPLUG 273 help 274 Say Y here to experiment with turning CPUs off and on. CPUs 275 can be controlled through /sys/devices/system/cpu/cpu#. 276 Say N if you want to disable CPU hotplug. 277 278source "kernel/time/Kconfig" 279 280if SPARC64 281source "drivers/cpufreq/Kconfig" 282 283config US3_FREQ 284 tristate "UltraSPARC-III CPU Frequency driver" 285 depends on CPU_FREQ 286 select CPU_FREQ_TABLE 287 help 288 This adds the CPUFreq driver for UltraSPARC-III processors. 289 290 For details, take a look at <file:Documentation/cpu-freq>. 291 292 If in doubt, say N. 293 294config US2E_FREQ 295 tristate "UltraSPARC-IIe CPU Frequency driver" 296 depends on CPU_FREQ 297 select CPU_FREQ_TABLE 298 help 299 This adds the CPUFreq driver for UltraSPARC-IIe processors. 300 301 For details, take a look at <file:Documentation/cpu-freq>. 302 303 If in doubt, say N. 304 305endif 306 307config US3_MC 308 tristate "UltraSPARC-III Memory Controller driver" 309 depends on SPARC64 310 default y 311 help 312 This adds a driver for the UltraSPARC-III memory controller. 313 Loading this driver allows exact mnemonic strings to be 314 printed in the event of a memory error, so that the faulty DIMM 315 on the motherboard can be matched to the error. 316 317 If in doubt, say Y, as this information can be very useful. 318 319# Global things across all Sun machines. 320config GENERIC_LOCKBREAK 321 bool 322 default y 323 depends on SPARC64 && SMP && PREEMPT 324 325choice 326 prompt "SPARC64 Huge TLB Page Size" 327 depends on SPARC64 && HUGETLB_PAGE 328 default HUGETLB_PAGE_SIZE_4MB 329 330config HUGETLB_PAGE_SIZE_4MB 331 bool "4MB" 332 333config HUGETLB_PAGE_SIZE_512K 334 bool "512K" 335 336config HUGETLB_PAGE_SIZE_64K 337 depends on !SPARC64_PAGE_SIZE_64KB 338 bool "64K" 339 340endchoice 341 342config NUMA 343 bool "NUMA support" 344 depends on SPARC64 && SMP 345 346config NODES_SHIFT 347 int 348 default "4" 349 depends on NEED_MULTIPLE_NODES 350 351# Some NUMA nodes have memory ranges that span 352# other nodes. Even though a pfn is valid and 353# between a node's start and end pfns, it may not 354# reside on that node. See memmap_init_zone() 355# for details. 356config NODES_SPAN_OTHER_NODES 357 def_bool y 358 depends on NEED_MULTIPLE_NODES 359 360config ARCH_SELECT_MEMORY_MODEL 361 def_bool y if SPARC64 362 363config ARCH_SPARSEMEM_ENABLE 364 def_bool y if SPARC64 365 select SPARSEMEM_VMEMMAP_ENABLE 366 367config ARCH_SPARSEMEM_DEFAULT 368 def_bool y if SPARC64 369 370source "mm/Kconfig" 371 372config SCHED_SMT 373 bool "SMT (Hyperthreading) scheduler support" 374 depends on SPARC64 && SMP 375 default y 376 help 377 SMT scheduler support improves the CPU scheduler's decision making 378 when dealing with SPARC cpus at a cost of slightly increased overhead 379 in some places. If unsure say N here. 380 381config SCHED_MC 382 bool "Multi-core scheduler support" 383 depends on SPARC64 && SMP 384 default y 385 help 386 Multi-core scheduler support improves the CPU scheduler's decision 387 making when dealing with multi-core CPU chips at a cost of slightly 388 increased overhead in some places. If unsure say N here. 389 390source "kernel/Kconfig.preempt" 391 392config CMDLINE_BOOL 393 bool "Default bootloader kernel arguments" 394 depends on SPARC64 395 396config CMDLINE 397 string "Initial kernel command string" 398 depends on CMDLINE_BOOL 399 default "console=ttyS0,9600 root=/dev/sda1" 400 help 401 Say Y here if you want to be able to pass default arguments to 402 the kernel. This will be overridden by the bootloader, if you 403 use one (such as SILO). This is most useful if you want to boot 404 a kernel from TFTP, and want default options to be available 405 with having them passed on the command line. 406 407 NOTE: This option WILL override the PROM bootargs setting! 408 409config SUN_PM 410 bool 411 default y if SPARC32 412 help 413 Enable power management and CPU standby features on supported 414 SPARC platforms. 415 416config SPARC_LED 417 tristate "Sun4m LED driver" 418 depends on SPARC32 419 help 420 This driver toggles the front-panel LED on sun4m systems 421 in a user-specifiable manner. Its state can be probed 422 by reading /proc/led and its blinking mode can be changed 423 via writes to /proc/led 424 425config SERIAL_CONSOLE 426 bool 427 depends on SPARC32 428 default y 429 ---help--- 430 If you say Y here, it will be possible to use a serial port as the 431 system console (the system console is the device which receives all 432 kernel messages and warnings and which allows logins in single user 433 mode). This could be useful if some terminal or printer is connected 434 to that serial port. 435 436 Even if you say Y here, the currently visible virtual console 437 (/dev/tty0) will still be used as the system console by default, but 438 you can alter that using a kernel command line option such as 439 "console=ttyS1". (Try "man bootparam" or see the documentation of 440 your boot loader (silo) about how to pass options to the kernel at 441 boot time.) 442 443 If you don't have a graphics card installed and you say Y here, the 444 kernel will automatically use the first serial line, /dev/ttyS0, as 445 system console. 446 447 If unsure, say N. 448 449config SPARC_LEON 450 bool "Sparc Leon processor family" 451 depends on SPARC32 452 ---help--- 453 If you say Y here if you are running on a SPARC-LEON processor. 454 The LEON processor is a synthesizable VHDL model of the 455 SPARC-v8 standard. LEON is part of the GRLIB collection of 456 IP cores that are distributed under GPL. GRLIB can be downloaded 457 from www.gaisler.com. You can download a sparc-linux cross-compilation 458 toolchain at www.gaisler.com. 459 460if SPARC_LEON 461menu "U-Boot options" 462 463config UBOOT_LOAD_ADDR 464 hex "uImage Load Address" 465 default 0x40004000 466 ---help--- 467 U-Boot kernel load address, the address in physical address space 468 where u-boot will place the Linux kernel before booting it. 469 This address is normally the base address of main memory + 0x4000. 470 471config UBOOT_FLASH_ADDR 472 hex "uImage.o Load Address" 473 default 0x00080000 474 ---help--- 475 Optional setting only affecting the uImage.o ELF-image used to 476 download the uImage file to the target using a ELF-loader other than 477 U-Boot. It may for example be used to download an uImage to FLASH with 478 the GRMON utility before even starting u-boot. 479 480config UBOOT_ENTRY_ADDR 481 hex "uImage Entry Address" 482 default 0xf0004000 483 ---help--- 484 Do not change this unless you know what you're doing. This is 485 hardcoded by the SPARC32 and LEON port. 486 487 This is the virtual address u-boot jumps to when booting the Linux 488 Kernel. 489 490endmenu 491endif 492 493endmenu 494 495menu "Bus options (PCI etc.)" 496config SBUS 497 bool 498 default y 499 500config SBUSCHAR 501 bool 502 default y 503 504config SUN_LDOMS 505 bool "Sun Logical Domains support" 506 depends on SPARC64 507 help 508 Say Y here is you want to support virtual devices via 509 Logical Domains. 510 511config PCI 512 bool "Support for PCI and PS/2 keyboard/mouse" 513 help 514 Find out whether your system includes a PCI bus. PCI is the name of 515 a bus system, i.e. the way the CPU talks to the other stuff inside 516 your box. If you say Y here, the kernel will include drivers and 517 infrastructure code to support PCI bus devices. 518 519 CONFIG_PCI is needed for all JavaStation's (including MrCoffee), 520 CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC. 521 All of these platforms are extremely obscure, so say N if unsure. 522 523config PCI_DOMAINS 524 def_bool PCI if SPARC64 525 526config PCI_SYSCALL 527 def_bool PCI 528 529config PCIC_PCI 530 bool 531 depends on PCI && SPARC32 && !SPARC_LEON 532 default y 533 534config LEON_PCI 535 bool 536 depends on PCI && SPARC_LEON 537 default y 538 539config GRPCI2 540 bool "GRPCI2 Host Bridge Support" 541 depends on LEON_PCI 542 default y 543 help 544 Say Y here to include the GRPCI2 Host Bridge Driver. 545 546source "drivers/pci/Kconfig" 547 548source "drivers/pcmcia/Kconfig" 549 550config SUN_OPENPROMFS 551 tristate "Openprom tree appears in /proc/openprom" 552 help 553 If you say Y, the OpenPROM device tree will be available as a 554 virtual file system, which you can mount to /proc/openprom by "mount 555 -t openpromfs none /proc/openprom". 556 557 To compile the /proc/openprom support as a module, choose M here: the 558 module will be called openpromfs. 559 560 Only choose N if you know in advance that you will not need to modify 561 OpenPROM settings on the running system. 562 563# Makefile helper 564config SPARC64_PCI 565 bool 566 default y 567 depends on SPARC64 && PCI 568 569endmenu 570 571menu "Executable file formats" 572 573source "fs/Kconfig.binfmt" 574 575config COMPAT 576 bool 577 depends on SPARC64 578 default y 579 select COMPAT_BINFMT_ELF 580 select ARCH_WANT_OLD_COMPAT_IPC 581 582config SYSVIPC_COMPAT 583 bool 584 depends on COMPAT && SYSVIPC 585 default y 586 587endmenu 588 589source "net/Kconfig" 590 591source "drivers/Kconfig" 592 593source "drivers/sbus/char/Kconfig" 594 595source "fs/Kconfig" 596 597source "arch/sparc/Kconfig.debug" 598 599source "security/Kconfig" 600 601source "crypto/Kconfig" 602 603source "lib/Kconfig" 604