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 32config SPARC32 33 def_bool !64BIT 34 35config SPARC64 36 def_bool 64BIT 37 select ARCH_SUPPORTS_MSI 38 select HAVE_FUNCTION_TRACER 39 select HAVE_FUNCTION_GRAPH_TRACER 40 select HAVE_FUNCTION_GRAPH_FP_TEST 41 select HAVE_FUNCTION_TRACE_MCOUNT_TEST 42 select HAVE_KRETPROBES 43 select HAVE_KPROBES 44 select HAVE_MEMBLOCK 45 select HAVE_SYSCALL_WRAPPERS 46 select HAVE_DYNAMIC_FTRACE 47 select HAVE_FTRACE_MCOUNT_RECORD 48 select HAVE_SYSCALL_TRACEPOINTS 49 select RTC_DRV_CMOS 50 select RTC_DRV_BQ4802 51 select RTC_DRV_SUN4V 52 select RTC_DRV_STARFIRE 53 select HAVE_PERF_EVENTS 54 select PERF_USE_VMALLOC 55 select IRQ_PREFLOW_FASTEOI 56 57config ARCH_DEFCONFIG 58 string 59 default "arch/sparc/configs/sparc32_defconfig" if SPARC32 60 default "arch/sparc/configs/sparc64_defconfig" if SPARC64 61 62# CONFIG_BITS can be used at source level to get 32/64 bits 63config BITS 64 int 65 default 32 if SPARC32 66 default 64 if SPARC64 67 68config ARCH_USES_GETTIMEOFFSET 69 bool 70 default y if SPARC32 71 72config GENERIC_CMOS_UPDATE 73 bool 74 default y 75 76config GENERIC_CLOCKEVENTS 77 bool 78 default y if SPARC64 79 80config IOMMU_HELPER 81 bool 82 default y if SPARC64 83 84config QUICKLIST 85 bool 86 default y if SPARC64 87 88config STACKTRACE_SUPPORT 89 bool 90 default y if SPARC64 91 92config LOCKDEP_SUPPORT 93 bool 94 default y if SPARC64 95 96config HAVE_LATENCYTOP_SUPPORT 97 bool 98 default y if SPARC64 99 100config AUDIT_ARCH 101 bool 102 default y 103 104config HAVE_SETUP_PER_CPU_AREA 105 def_bool y if SPARC64 106 107config NEED_PER_CPU_EMBED_FIRST_CHUNK 108 def_bool y if SPARC64 109 110config NEED_PER_CPU_PAGE_FIRST_CHUNK 111 def_bool y if SPARC64 112 113config MMU 114 bool 115 default y 116 117config HIGHMEM 118 bool 119 default y if SPARC32 120 121config ZONE_DMA 122 bool 123 default y if SPARC32 124 125config NEED_DMA_MAP_STATE 126 def_bool y 127 128config NEED_SG_DMA_LENGTH 129 def_bool y 130 131config GENERIC_ISA_DMA 132 bool 133 default y if SPARC32 134 135config GENERIC_GPIO 136 bool 137 help 138 Generic GPIO API support 139 140config ARCH_NO_VIRT_TO_BUS 141 def_bool y 142 143config ARCH_SUPPORTS_DEBUG_PAGEALLOC 144 def_bool y if SPARC64 145 146source "init/Kconfig" 147 148source "kernel/Kconfig.freezer" 149 150menu "Processor type and features" 151 152config SMP 153 bool "Symmetric multi-processing support (does not work on sun4/sun4c)" 154 ---help--- 155 This enables support for systems with more than one CPU. If you have 156 a system with only one CPU, say N. If you have a system with more 157 than one CPU, say Y. 158 159 If you say N here, the kernel will run on single and multiprocessor 160 machines, but will use only one CPU of a multiprocessor machine. If 161 you say Y here, the kernel will run on many, but not all, 162 singleprocessor machines. On a singleprocessor machine, the kernel 163 will run faster if you say N here. 164 165 People using multiprocessor machines who say Y here should also say 166 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power 167 Management" code will be disabled if you say Y here. 168 169 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO 170 available at <http://www.tldp.org/docs.html#howto>. 171 172 If you don't know what to do here, say N. 173 174config NR_CPUS 175 int "Maximum number of CPUs" 176 depends on SMP 177 range 2 32 if SPARC32 178 range 2 1024 if SPARC64 179 default 32 if SPARC32 180 default 64 if SPARC64 181 182source kernel/Kconfig.hz 183 184config RWSEM_GENERIC_SPINLOCK 185 bool 186 default y if SPARC32 187 188config RWSEM_XCHGADD_ALGORITHM 189 bool 190 default y if SPARC64 191 192config GENERIC_HWEIGHT 193 bool 194 default y if !ULTRA_HAS_POPULATION_COUNT 195 196config GENERIC_CALIBRATE_DELAY 197 bool 198 default y 199 200config ARCH_MAY_HAVE_PC_FDC 201 bool 202 default y 203 204config EMULATED_CMPXCHG 205 bool 206 default y if SPARC32 207 help 208 Sparc32 does not have a CAS instruction like sparc64. cmpxchg() 209 is emulated, and therefore it is not completely atomic. 210 211# Makefile helpers 212config SPARC32_SMP 213 bool 214 default y 215 depends on SPARC32 && SMP 216 217config SPARC64_SMP 218 bool 219 default y 220 depends on SPARC64 && SMP 221 222config EARLYFB 223 bool "Support for early boot text console" 224 default y 225 depends on SPARC64 226 help 227 Say Y here to enable a faster early framebuffer boot console. 228 229choice 230 prompt "Kernel page size" if SPARC64 231 default SPARC64_PAGE_SIZE_8KB 232 233config SPARC64_PAGE_SIZE_8KB 234 bool "8KB" 235 help 236 This lets you select the page size of the kernel. 237 238 8KB and 64KB work quite well, since SPARC ELF sections 239 provide for up to 64KB alignment. 240 241 If you don't know what to do, choose 8KB. 242 243config SPARC64_PAGE_SIZE_64KB 244 bool "64KB" 245 246endchoice 247 248config SECCOMP 249 bool "Enable seccomp to safely compute untrusted bytecode" 250 depends on SPARC64 && PROC_FS 251 default y 252 help 253 This kernel feature is useful for number crunching applications 254 that may need to compute untrusted bytecode during their 255 execution. By using pipes or other transports made available to 256 the process as file descriptors supporting the read/write 257 syscalls, it's possible to isolate those applications in 258 their own address space using seccomp. Once seccomp is 259 enabled via /proc/<pid>/seccomp, it cannot be disabled 260 and the task is only allowed to execute a few safe syscalls 261 defined by each seccomp mode. 262 263 If unsure, say Y. Only embedded should say N here. 264 265config HOTPLUG_CPU 266 bool "Support for hot-pluggable CPUs" 267 depends on SPARC64 && SMP 268 select HOTPLUG 269 help 270 Say Y here to experiment with turning CPUs off and on. CPUs 271 can be controlled through /sys/devices/system/cpu/cpu#. 272 Say N if you want to disable CPU hotplug. 273 274source "kernel/time/Kconfig" 275 276if SPARC64 277source "drivers/cpufreq/Kconfig" 278 279config US3_FREQ 280 tristate "UltraSPARC-III CPU Frequency driver" 281 depends on CPU_FREQ 282 select CPU_FREQ_TABLE 283 help 284 This adds the CPUFreq driver for UltraSPARC-III processors. 285 286 For details, take a look at <file:Documentation/cpu-freq>. 287 288 If in doubt, say N. 289 290config US2E_FREQ 291 tristate "UltraSPARC-IIe CPU Frequency driver" 292 depends on CPU_FREQ 293 select CPU_FREQ_TABLE 294 help 295 This adds the CPUFreq driver for UltraSPARC-IIe processors. 296 297 For details, take a look at <file:Documentation/cpu-freq>. 298 299 If in doubt, say N. 300 301endif 302 303config US3_MC 304 tristate "UltraSPARC-III Memory Controller driver" 305 depends on SPARC64 306 default y 307 help 308 This adds a driver for the UltraSPARC-III memory controller. 309 Loading this driver allows exact mnemonic strings to be 310 printed in the event of a memory error, so that the faulty DIMM 311 on the motherboard can be matched to the error. 312 313 If in doubt, say Y, as this information can be very useful. 314 315# Global things across all Sun machines. 316config GENERIC_LOCKBREAK 317 bool 318 default y 319 depends on SPARC64 && SMP && PREEMPT 320 321choice 322 prompt "SPARC64 Huge TLB Page Size" 323 depends on SPARC64 && HUGETLB_PAGE 324 default HUGETLB_PAGE_SIZE_4MB 325 326config HUGETLB_PAGE_SIZE_4MB 327 bool "4MB" 328 329config HUGETLB_PAGE_SIZE_512K 330 bool "512K" 331 332config HUGETLB_PAGE_SIZE_64K 333 depends on !SPARC64_PAGE_SIZE_64KB 334 bool "64K" 335 336endchoice 337 338config NUMA 339 bool "NUMA support" 340 depends on SPARC64 && SMP 341 342config NODES_SHIFT 343 int 344 default "4" 345 depends on NEED_MULTIPLE_NODES 346 347# Some NUMA nodes have memory ranges that span 348# other nodes. Even though a pfn is valid and 349# between a node's start and end pfns, it may not 350# reside on that node. See memmap_init_zone() 351# for details. 352config NODES_SPAN_OTHER_NODES 353 def_bool y 354 depends on NEED_MULTIPLE_NODES 355 356config ARCH_POPULATES_NODE_MAP 357 def_bool y if SPARC64 358 359config ARCH_SELECT_MEMORY_MODEL 360 def_bool y if SPARC64 361 362config ARCH_SPARSEMEM_ENABLE 363 def_bool y if SPARC64 364 select SPARSEMEM_VMEMMAP_ENABLE 365 366config ARCH_SPARSEMEM_DEFAULT 367 def_bool y if SPARC64 368 369source "mm/Kconfig" 370 371config SCHED_SMT 372 bool "SMT (Hyperthreading) scheduler support" 373 depends on SPARC64 && SMP 374 default y 375 help 376 SMT scheduler support improves the CPU scheduler's decision making 377 when dealing with SPARC cpus at a cost of slightly increased overhead 378 in some places. If unsure say N here. 379 380config SCHED_MC 381 bool "Multi-core scheduler support" 382 depends on SPARC64 && SMP 383 default y 384 help 385 Multi-core scheduler support improves the CPU scheduler's decision 386 making when dealing with multi-core CPU chips at a cost of slightly 387 increased overhead in some places. If unsure say N here. 388 389if SPARC64 390source "kernel/Kconfig.preempt" 391endif 392 393config CMDLINE_BOOL 394 bool "Default bootloader kernel arguments" 395 depends on SPARC64 396 397config CMDLINE 398 string "Initial kernel command string" 399 depends on CMDLINE_BOOL 400 default "console=ttyS0,9600 root=/dev/sda1" 401 help 402 Say Y here if you want to be able to pass default arguments to 403 the kernel. This will be overridden by the bootloader, if you 404 use one (such as SILO). This is most useful if you want to boot 405 a kernel from TFTP, and want default options to be available 406 with having them passed on the command line. 407 408 NOTE: This option WILL override the PROM bootargs setting! 409 410config SUN_PM 411 bool 412 default y if SPARC32 413 help 414 Enable power management and CPU standby features on supported 415 SPARC platforms. 416 417config SPARC_LED 418 tristate "Sun4m LED driver" 419 depends on SPARC32 420 help 421 This driver toggles the front-panel LED on sun4m systems 422 in a user-specifiable manner. Its state can be probed 423 by reading /proc/led and its blinking mode can be changed 424 via writes to /proc/led 425 426config SERIAL_CONSOLE 427 bool 428 depends on SPARC32 429 default y 430 ---help--- 431 If you say Y here, it will be possible to use a serial port as the 432 system console (the system console is the device which receives all 433 kernel messages and warnings and which allows logins in single user 434 mode). This could be useful if some terminal or printer is connected 435 to that serial port. 436 437 Even if you say Y here, the currently visible virtual console 438 (/dev/tty0) will still be used as the system console by default, but 439 you can alter that using a kernel command line option such as 440 "console=ttyS1". (Try "man bootparam" or see the documentation of 441 your boot loader (silo) about how to pass options to the kernel at 442 boot time.) 443 444 If you don't have a graphics card installed and you say Y here, the 445 kernel will automatically use the first serial line, /dev/ttyS0, as 446 system console. 447 448 If unsure, say N. 449 450config SPARC_LEON 451 bool "Sparc Leon processor family" 452 depends on SPARC32 453 ---help--- 454 If you say Y here if you are running on a SPARC-LEON processor. 455 The LEON processor is a synthesizable VHDL model of the 456 SPARC-v8 standard. LEON is part of the GRLIB collection of 457 IP cores that are distributed under GPL. GRLIB can be downloaded 458 from www.gaisler.com. You can download a sparc-linux cross-compilation 459 toolchain at www.gaisler.com. 460 461if SPARC_LEON 462menu "U-Boot options" 463 464config UBOOT_LOAD_ADDR 465 hex "uImage Load Address" 466 default 0x40004000 467 ---help--- 468 U-Boot kernel load address, the address in physical address space 469 where u-boot will place the Linux kernel before booting it. 470 This address is normally the base address of main memory + 0x4000. 471 472config UBOOT_FLASH_ADDR 473 hex "uImage.o Load Address" 474 default 0x00080000 475 ---help--- 476 Optional setting only affecting the uImage.o ELF-image used to 477 download the uImage file to the target using a ELF-loader other than 478 U-Boot. It may for example be used to download an uImage to FLASH with 479 the GRMON utility before even starting u-boot. 480 481config UBOOT_ENTRY_ADDR 482 hex "uImage Entry Address" 483 default 0xf0004000 484 ---help--- 485 Do not change this unless you know what you're doing. This is 486 hardcoded by the SPARC32 and LEON port. 487 488 This is the virtual address u-boot jumps to when booting the Linux 489 Kernel. 490 491endmenu 492endif 493 494endmenu 495 496menu "Bus options (PCI etc.)" 497config SBUS 498 bool 499 default y 500 501config SBUSCHAR 502 bool 503 default y 504 505config SUN_LDOMS 506 bool "Sun Logical Domains support" 507 depends on SPARC64 508 help 509 Say Y here is you want to support virtual devices via 510 Logical Domains. 511 512config PCI 513 bool "Support for PCI and PS/2 keyboard/mouse" 514 help 515 Find out whether your system includes a PCI bus. PCI is the name of 516 a bus system, i.e. the way the CPU talks to the other stuff inside 517 your box. If you say Y here, the kernel will include drivers and 518 infrastructure code to support PCI bus devices. 519 520 CONFIG_PCI is needed for all JavaStation's (including MrCoffee), 521 CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC. 522 All of these platforms are extremely obscure, so say N if unsure. 523 524config PCI_DOMAINS 525 def_bool PCI if SPARC64 526 527config PCI_SYSCALL 528 def_bool PCI 529 530config PCIC_PCI 531 bool 532 depends on PCI && SPARC32 && !SPARC_LEON 533 default y 534 535config LEON_PCI 536 bool 537 depends on PCI && SPARC_LEON 538 default y 539 540config GRPCI2 541 bool "GRPCI2 Host Bridge Support" 542 depends on LEON_PCI 543 default y 544 help 545 Say Y here to include the GRPCI2 Host Bridge Driver. 546 547source "drivers/pci/Kconfig" 548 549source "drivers/pcmcia/Kconfig" 550 551config SUN_OPENPROMFS 552 tristate "Openprom tree appears in /proc/openprom" 553 help 554 If you say Y, the OpenPROM device tree will be available as a 555 virtual file system, which you can mount to /proc/openprom by "mount 556 -t openpromfs none /proc/openprom". 557 558 To compile the /proc/openprom support as a module, choose M here: the 559 module will be called openpromfs. 560 561 Only choose N if you know in advance that you will not need to modify 562 OpenPROM settings on the running system. 563 564# Makefile helpers 565config SPARC32_PCI 566 bool 567 default y 568 depends on SPARC32 && PCI 569 570config SPARC64_PCI 571 bool 572 default y 573 depends on SPARC64 && PCI 574 575endmenu 576 577menu "Executable file formats" 578 579source "fs/Kconfig.binfmt" 580 581config COMPAT 582 bool 583 depends on SPARC64 584 default y 585 select COMPAT_BINFMT_ELF 586 587config SYSVIPC_COMPAT 588 bool 589 depends on COMPAT && SYSVIPC 590 default y 591 592endmenu 593 594source "net/Kconfig" 595 596source "drivers/Kconfig" 597 598source "drivers/sbus/char/Kconfig" 599 600source "fs/Kconfig" 601 602source "arch/sparc/Kconfig.debug" 603 604source "security/Kconfig" 605 606source "crypto/Kconfig" 607 608source "lib/Kconfig" 609