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_RCU_TABLE_FREE if SMP 45 select HAVE_MEMBLOCK 46 select HAVE_SYSCALL_WRAPPERS 47 select HAVE_DYNAMIC_FTRACE 48 select HAVE_FTRACE_MCOUNT_RECORD 49 select HAVE_SYSCALL_TRACEPOINTS 50 select RTC_DRV_CMOS 51 select RTC_DRV_BQ4802 52 select RTC_DRV_SUN4V 53 select RTC_DRV_STARFIRE 54 select HAVE_PERF_EVENTS 55 select PERF_USE_VMALLOC 56 select IRQ_PREFLOW_FASTEOI 57 select ARCH_HAVE_NMI_SAFE_CMPXCHG 58 select HAVE_C_RECORDMCOUNT 59 60config ARCH_DEFCONFIG 61 string 62 default "arch/sparc/configs/sparc32_defconfig" if SPARC32 63 default "arch/sparc/configs/sparc64_defconfig" if SPARC64 64 65# CONFIG_BITS can be used at source level to get 32/64 bits 66config BITS 67 int 68 default 32 if SPARC32 69 default 64 if SPARC64 70 71config ARCH_USES_GETTIMEOFFSET 72 bool 73 default y if SPARC32 74 75config GENERIC_CMOS_UPDATE 76 bool 77 default y 78 79config GENERIC_CLOCKEVENTS 80 bool 81 default y if SPARC64 82 83config IOMMU_HELPER 84 bool 85 default y if SPARC64 86 87config STACKTRACE_SUPPORT 88 bool 89 default y if SPARC64 90 91config LOCKDEP_SUPPORT 92 bool 93 default y if SPARC64 94 95config HAVE_LATENCYTOP_SUPPORT 96 bool 97 default y if SPARC64 98 99config AUDIT_ARCH 100 bool 101 default y 102 103config HAVE_SETUP_PER_CPU_AREA 104 def_bool y if SPARC64 105 106config NEED_PER_CPU_EMBED_FIRST_CHUNK 107 def_bool y if SPARC64 108 109config NEED_PER_CPU_PAGE_FIRST_CHUNK 110 def_bool y if SPARC64 111 112config MMU 113 bool 114 default y 115 116config HIGHMEM 117 bool 118 default y if SPARC32 119 120config ZONE_DMA 121 bool 122 default y if SPARC32 123 124config NEED_DMA_MAP_STATE 125 def_bool y 126 127config NEED_SG_DMA_LENGTH 128 def_bool y 129 130config GENERIC_ISA_DMA 131 bool 132 default y if SPARC32 133 134config GENERIC_GPIO 135 bool 136 help 137 Generic GPIO API support 138 139config ARCH_NO_VIRT_TO_BUS 140 def_bool y 141 142config ARCH_SUPPORTS_DEBUG_PAGEALLOC 143 def_bool y if SPARC64 144 145source "init/Kconfig" 146 147source "kernel/Kconfig.freezer" 148 149menu "Processor type and features" 150 151config SMP 152 bool "Symmetric multi-processing support (does not work on sun4/sun4c)" 153 ---help--- 154 This enables support for systems with more than one CPU. If you have 155 a system with only one CPU, say N. If you have a system with more 156 than one CPU, say Y. 157 158 If you say N here, the kernel will run on single and multiprocessor 159 machines, but will use only one CPU of a multiprocessor machine. If 160 you say Y here, the kernel will run on many, but not all, 161 singleprocessor machines. On a singleprocessor machine, the kernel 162 will run faster if you say N here. 163 164 People using multiprocessor machines who say Y here should also say 165 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power 166 Management" code will be disabled if you say Y here. 167 168 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO 169 available at <http://www.tldp.org/docs.html#howto>. 170 171 If you don't know what to do here, say N. 172 173config NR_CPUS 174 int "Maximum number of CPUs" 175 depends on SMP 176 range 2 32 if SPARC32 177 range 2 1024 if SPARC64 178 default 32 if SPARC32 179 default 64 if SPARC64 180 181source kernel/Kconfig.hz 182 183config RWSEM_GENERIC_SPINLOCK 184 bool 185 default y if SPARC32 186 187config RWSEM_XCHGADD_ALGORITHM 188 bool 189 default y if SPARC64 190 191config GENERIC_HWEIGHT 192 bool 193 default y if !ULTRA_HAS_POPULATION_COUNT 194 195config GENERIC_CALIBRATE_DELAY 196 bool 197 default y 198 199config ARCH_MAY_HAVE_PC_FDC 200 bool 201 default y 202 203config EMULATED_CMPXCHG 204 bool 205 default y if SPARC32 206 help 207 Sparc32 does not have a CAS instruction like sparc64. cmpxchg() 208 is emulated, and therefore it is not completely atomic. 209 210# Makefile helpers 211config SPARC32_SMP 212 bool 213 default y 214 depends on SPARC32 && SMP 215 216config SPARC64_SMP 217 bool 218 default y 219 depends on SPARC64 && SMP 220 221config EARLYFB 222 bool "Support for early boot text console" 223 default y 224 depends on SPARC64 225 help 226 Say Y here to enable a faster early framebuffer boot console. 227 228choice 229 prompt "Kernel page size" if SPARC64 230 default SPARC64_PAGE_SIZE_8KB 231 232config SPARC64_PAGE_SIZE_8KB 233 bool "8KB" 234 help 235 This lets you select the page size of the kernel. 236 237 8KB and 64KB work quite well, since SPARC ELF sections 238 provide for up to 64KB alignment. 239 240 If you don't know what to do, choose 8KB. 241 242config SPARC64_PAGE_SIZE_64KB 243 bool "64KB" 244 245endchoice 246 247config SECCOMP 248 bool "Enable seccomp to safely compute untrusted bytecode" 249 depends on SPARC64 && PROC_FS 250 default y 251 help 252 This kernel feature is useful for number crunching applications 253 that may need to compute untrusted bytecode during their 254 execution. By using pipes or other transports made available to 255 the process as file descriptors supporting the read/write 256 syscalls, it's possible to isolate those applications in 257 their own address space using seccomp. Once seccomp is 258 enabled via /proc/<pid>/seccomp, it cannot be disabled 259 and the task is only allowed to execute a few safe syscalls 260 defined by each seccomp mode. 261 262 If unsure, say Y. Only embedded should say N here. 263 264config HOTPLUG_CPU 265 bool "Support for hot-pluggable CPUs" 266 depends on SPARC64 && SMP 267 select HOTPLUG 268 help 269 Say Y here to experiment with turning CPUs off and on. CPUs 270 can be controlled through /sys/devices/system/cpu/cpu#. 271 Say N if you want to disable CPU hotplug. 272 273source "kernel/time/Kconfig" 274 275if SPARC64 276source "drivers/cpufreq/Kconfig" 277 278config US3_FREQ 279 tristate "UltraSPARC-III CPU Frequency driver" 280 depends on CPU_FREQ 281 select CPU_FREQ_TABLE 282 help 283 This adds the CPUFreq driver for UltraSPARC-III processors. 284 285 For details, take a look at <file:Documentation/cpu-freq>. 286 287 If in doubt, say N. 288 289config US2E_FREQ 290 tristate "UltraSPARC-IIe CPU Frequency driver" 291 depends on CPU_FREQ 292 select CPU_FREQ_TABLE 293 help 294 This adds the CPUFreq driver for UltraSPARC-IIe processors. 295 296 For details, take a look at <file:Documentation/cpu-freq>. 297 298 If in doubt, say N. 299 300endif 301 302config US3_MC 303 tristate "UltraSPARC-III Memory Controller driver" 304 depends on SPARC64 305 default y 306 help 307 This adds a driver for the UltraSPARC-III memory controller. 308 Loading this driver allows exact mnemonic strings to be 309 printed in the event of a memory error, so that the faulty DIMM 310 on the motherboard can be matched to the error. 311 312 If in doubt, say Y, as this information can be very useful. 313 314# Global things across all Sun machines. 315config GENERIC_LOCKBREAK 316 bool 317 default y 318 depends on SPARC64 && SMP && PREEMPT 319 320choice 321 prompt "SPARC64 Huge TLB Page Size" 322 depends on SPARC64 && HUGETLB_PAGE 323 default HUGETLB_PAGE_SIZE_4MB 324 325config HUGETLB_PAGE_SIZE_4MB 326 bool "4MB" 327 328config HUGETLB_PAGE_SIZE_512K 329 bool "512K" 330 331config HUGETLB_PAGE_SIZE_64K 332 depends on !SPARC64_PAGE_SIZE_64KB 333 bool "64K" 334 335endchoice 336 337config NUMA 338 bool "NUMA support" 339 depends on SPARC64 && SMP 340 341config NODES_SHIFT 342 int 343 default "4" 344 depends on NEED_MULTIPLE_NODES 345 346# Some NUMA nodes have memory ranges that span 347# other nodes. Even though a pfn is valid and 348# between a node's start and end pfns, it may not 349# reside on that node. See memmap_init_zone() 350# for details. 351config NODES_SPAN_OTHER_NODES 352 def_bool y 353 depends on NEED_MULTIPLE_NODES 354 355config ARCH_POPULATES_NODE_MAP 356 def_bool y if SPARC64 357 358config ARCH_SELECT_MEMORY_MODEL 359 def_bool y if SPARC64 360 361config ARCH_SPARSEMEM_ENABLE 362 def_bool y if SPARC64 363 select SPARSEMEM_VMEMMAP_ENABLE 364 365config ARCH_SPARSEMEM_DEFAULT 366 def_bool y if SPARC64 367 368source "mm/Kconfig" 369 370config SCHED_SMT 371 bool "SMT (Hyperthreading) scheduler support" 372 depends on SPARC64 && SMP 373 default y 374 help 375 SMT scheduler support improves the CPU scheduler's decision making 376 when dealing with SPARC cpus at a cost of slightly increased overhead 377 in some places. If unsure say N here. 378 379config SCHED_MC 380 bool "Multi-core scheduler support" 381 depends on SPARC64 && SMP 382 default y 383 help 384 Multi-core scheduler support improves the CPU scheduler's decision 385 making when dealing with multi-core CPU chips at a cost of slightly 386 increased overhead in some places. If unsure say N here. 387 388if SPARC64 389source "kernel/Kconfig.preempt" 390endif 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 helpers 564config SPARC32_PCI 565 bool 566 default y 567 depends on SPARC32 && PCI 568 569config SPARC64_PCI 570 bool 571 default y 572 depends on SPARC64 && PCI 573 574endmenu 575 576menu "Executable file formats" 577 578source "fs/Kconfig.binfmt" 579 580config COMPAT 581 bool 582 depends on SPARC64 583 default y 584 select COMPAT_BINFMT_ELF 585 586config SYSVIPC_COMPAT 587 bool 588 depends on COMPAT && SYSVIPC 589 default y 590 591endmenu 592 593source "net/Kconfig" 594 595source "drivers/Kconfig" 596 597source "drivers/sbus/char/Kconfig" 598 599source "fs/Kconfig" 600 601source "arch/sparc/Kconfig.debug" 602 603source "security/Kconfig" 604 605source "crypto/Kconfig" 606 607source "lib/Kconfig" 608