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 29config SPARC32 30 def_bool !64BIT 31 32config SPARC64 33 def_bool 64BIT 34 select ARCH_SUPPORTS_MSI 35 select HAVE_FUNCTION_TRACER 36 select HAVE_FUNCTION_GRAPH_TRACER 37 select HAVE_FUNCTION_GRAPH_FP_TEST 38 select HAVE_FUNCTION_TRACE_MCOUNT_TEST 39 select HAVE_KRETPROBES 40 select HAVE_KPROBES 41 select HAVE_MEMBLOCK 42 select HAVE_SYSCALL_WRAPPERS 43 select HAVE_DYNAMIC_FTRACE 44 select HAVE_FTRACE_MCOUNT_RECORD 45 select HAVE_SYSCALL_TRACEPOINTS 46 select USE_GENERIC_SMP_HELPERS if SMP 47 select RTC_DRV_CMOS 48 select RTC_DRV_BQ4802 49 select RTC_DRV_SUN4V 50 select RTC_DRV_STARFIRE 51 select HAVE_PERF_EVENTS 52 select PERF_USE_VMALLOC 53 select HAVE_GENERIC_HARDIRQS 54 55config ARCH_DEFCONFIG 56 string 57 default "arch/sparc/configs/sparc32_defconfig" if SPARC32 58 default "arch/sparc/configs/sparc64_defconfig" if SPARC64 59 60# CONFIG_BITS can be used at source level to get 32/64 bits 61config BITS 62 int 63 default 32 if SPARC32 64 default 64 if SPARC64 65 66config ARCH_USES_GETTIMEOFFSET 67 bool 68 default y if SPARC32 69 70config GENERIC_CMOS_UPDATE 71 bool 72 default y 73 74config GENERIC_CLOCKEVENTS 75 bool 76 default y if SPARC64 77 78config IOMMU_HELPER 79 bool 80 default y if SPARC64 81 82config QUICKLIST 83 bool 84 default y if SPARC64 85 86config STACKTRACE_SUPPORT 87 bool 88 default y if SPARC64 89 90config LOCKDEP_SUPPORT 91 bool 92 default y if SPARC64 93 94config HAVE_LATENCYTOP_SUPPORT 95 bool 96 default y if SPARC64 97 98config AUDIT_ARCH 99 bool 100 default y 101 102config HAVE_SETUP_PER_CPU_AREA 103 def_bool y if SPARC64 104 105config NEED_PER_CPU_EMBED_FIRST_CHUNK 106 def_bool y if SPARC64 107 108config NEED_PER_CPU_PAGE_FIRST_CHUNK 109 def_bool y if SPARC64 110 111config MMU 112 bool 113 default y 114 115config HIGHMEM 116 bool 117 default y if SPARC32 118 119config ZONE_DMA 120 bool 121 default y if SPARC32 122 123config NEED_DMA_MAP_STATE 124 def_bool y 125 126config NEED_SG_DMA_LENGTH 127 def_bool y 128 129config GENERIC_ISA_DMA 130 bool 131 default y if SPARC32 132 133config GENERIC_GPIO 134 bool 135 help 136 Generic GPIO API support 137 138config ARCH_NO_VIRT_TO_BUS 139 def_bool y 140 141config ARCH_SUPPORTS_DEBUG_PAGEALLOC 142 def_bool y if SPARC64 143 144source "init/Kconfig" 145 146source "kernel/Kconfig.freezer" 147 148menu "Processor type and features" 149 150config SMP 151 bool "Symmetric multi-processing support (does not work on sun4/sun4c)" 152 ---help--- 153 This enables support for systems with more than one CPU. If you have 154 a system with only one CPU, say N. If you have a system with more 155 than one CPU, say Y. 156 157 If you say N here, the kernel will run on single and multiprocessor 158 machines, but will use only one CPU of a multiprocessor machine. If 159 you say Y here, the kernel will run on many, but not all, 160 singleprocessor machines. On a singleprocessor machine, the kernel 161 will run faster if you say N here. 162 163 People using multiprocessor machines who say Y here should also say 164 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power 165 Management" code will be disabled if you say Y here. 166 167 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO 168 available at <http://www.tldp.org/docs.html#howto>. 169 170 If you don't know what to do here, say N. 171 172config NR_CPUS 173 int "Maximum number of CPUs" 174 depends on SMP 175 range 2 32 if SPARC32 176 range 2 1024 if SPARC64 177 default 32 if SPARC32 178 default 64 if SPARC64 179 180source kernel/Kconfig.hz 181 182config RWSEM_GENERIC_SPINLOCK 183 bool 184 default y if SPARC32 185 186config RWSEM_XCHGADD_ALGORITHM 187 bool 188 default y if SPARC64 189 190config GENERIC_FIND_NEXT_BIT 191 bool 192 default y 193 194config GENERIC_HWEIGHT 195 bool 196 default y if !ULTRA_HAS_POPULATION_COUNT 197 198config GENERIC_CALIBRATE_DELAY 199 bool 200 default y 201 202config ARCH_MAY_HAVE_PC_FDC 203 bool 204 default y 205 206config EMULATED_CMPXCHG 207 bool 208 default y if SPARC32 209 help 210 Sparc32 does not have a CAS instruction like sparc64. cmpxchg() 211 is emulated, and therefore it is not completely atomic. 212 213# Makefile helpers 214config SPARC32_SMP 215 bool 216 default y 217 depends on SPARC32 && SMP 218 219config SPARC64_SMP 220 bool 221 default y 222 depends on SPARC64 && SMP 223 224config EARLYFB 225 bool "Support for early boot text console" 226 default y 227 depends on SPARC64 228 help 229 Say Y here to enable a faster early framebuffer boot console. 230 231choice 232 prompt "Kernel page size" if SPARC64 233 default SPARC64_PAGE_SIZE_8KB 234 235config SPARC64_PAGE_SIZE_8KB 236 bool "8KB" 237 help 238 This lets you select the page size of the kernel. 239 240 8KB and 64KB work quite well, since SPARC ELF sections 241 provide for up to 64KB alignment. 242 243 If you don't know what to do, choose 8KB. 244 245config SPARC64_PAGE_SIZE_64KB 246 bool "64KB" 247 248endchoice 249 250config SECCOMP 251 bool "Enable seccomp to safely compute untrusted bytecode" 252 depends on SPARC64 && PROC_FS 253 default y 254 help 255 This kernel feature is useful for number crunching applications 256 that may need to compute untrusted bytecode during their 257 execution. By using pipes or other transports made available to 258 the process as file descriptors supporting the read/write 259 syscalls, it's possible to isolate those applications in 260 their own address space using seccomp. Once seccomp is 261 enabled via /proc/<pid>/seccomp, it cannot be disabled 262 and the task is only allowed to execute a few safe syscalls 263 defined by each seccomp mode. 264 265 If unsure, say Y. Only embedded should say N here. 266 267config HOTPLUG_CPU 268 bool "Support for hot-pluggable CPUs" 269 depends on SPARC64 && SMP 270 select HOTPLUG 271 help 272 Say Y here to experiment with turning CPUs off and on. CPUs 273 can be controlled through /sys/devices/system/cpu/cpu#. 274 Say N if you want to disable CPU hotplug. 275 276source "kernel/time/Kconfig" 277 278if SPARC64 279source "drivers/cpufreq/Kconfig" 280 281config US3_FREQ 282 tristate "UltraSPARC-III CPU Frequency driver" 283 depends on CPU_FREQ 284 select CPU_FREQ_TABLE 285 help 286 This adds the CPUFreq driver for UltraSPARC-III processors. 287 288 For details, take a look at <file:Documentation/cpu-freq>. 289 290 If in doubt, say N. 291 292config US2E_FREQ 293 tristate "UltraSPARC-IIe CPU Frequency driver" 294 depends on CPU_FREQ 295 select CPU_FREQ_TABLE 296 help 297 This adds the CPUFreq driver for UltraSPARC-IIe processors. 298 299 For details, take a look at <file:Documentation/cpu-freq>. 300 301 If in doubt, say N. 302 303endif 304 305config US3_MC 306 tristate "UltraSPARC-III Memory Controller driver" 307 depends on SPARC64 308 default y 309 help 310 This adds a driver for the UltraSPARC-III memory controller. 311 Loading this driver allows exact mnemonic strings to be 312 printed in the event of a memory error, so that the faulty DIMM 313 on the motherboard can be matched to the error. 314 315 If in doubt, say Y, as this information can be very useful. 316 317# Global things across all Sun machines. 318config GENERIC_LOCKBREAK 319 bool 320 default y 321 depends on SPARC64 && SMP && PREEMPT 322 323choice 324 prompt "SPARC64 Huge TLB Page Size" 325 depends on SPARC64 && HUGETLB_PAGE 326 default HUGETLB_PAGE_SIZE_4MB 327 328config HUGETLB_PAGE_SIZE_4MB 329 bool "4MB" 330 331config HUGETLB_PAGE_SIZE_512K 332 bool "512K" 333 334config HUGETLB_PAGE_SIZE_64K 335 depends on !SPARC64_PAGE_SIZE_64KB 336 bool "64K" 337 338endchoice 339 340config NUMA 341 bool "NUMA support" 342 depends on SPARC64 && SMP 343 344config NODES_SHIFT 345 int 346 default "4" 347 depends on NEED_MULTIPLE_NODES 348 349# Some NUMA nodes have memory ranges that span 350# other nodes. Even though a pfn is valid and 351# between a node's start and end pfns, it may not 352# reside on that node. See memmap_init_zone() 353# for details. 354config NODES_SPAN_OTHER_NODES 355 def_bool y 356 depends on NEED_MULTIPLE_NODES 357 358config ARCH_POPULATES_NODE_MAP 359 def_bool y if SPARC64 360 361config ARCH_SELECT_MEMORY_MODEL 362 def_bool y if SPARC64 363 364config ARCH_SPARSEMEM_ENABLE 365 def_bool y if SPARC64 366 select SPARSEMEM_VMEMMAP_ENABLE 367 368config ARCH_SPARSEMEM_DEFAULT 369 def_bool y if SPARC64 370 371source "mm/Kconfig" 372 373config SCHED_SMT 374 bool "SMT (Hyperthreading) scheduler support" 375 depends on SPARC64 && SMP 376 default y 377 help 378 SMT scheduler support improves the CPU scheduler's decision making 379 when dealing with SPARC cpus at a cost of slightly increased overhead 380 in some places. If unsure say N here. 381 382config SCHED_MC 383 bool "Multi-core scheduler support" 384 depends on SPARC64 && SMP 385 default y 386 help 387 Multi-core scheduler support improves the CPU scheduler's decision 388 making when dealing with multi-core CPU chips at a cost of slightly 389 increased overhead in some places. If unsure say N here. 390 391if SPARC64 392source "kernel/Kconfig.preempt" 393endif 394 395config CMDLINE_BOOL 396 bool "Default bootloader kernel arguments" 397 depends on SPARC64 398 399config CMDLINE 400 string "Initial kernel command string" 401 depends on CMDLINE_BOOL 402 default "console=ttyS0,9600 root=/dev/sda1" 403 help 404 Say Y here if you want to be able to pass default arguments to 405 the kernel. This will be overridden by the bootloader, if you 406 use one (such as SILO). This is most useful if you want to boot 407 a kernel from TFTP, and want default options to be available 408 with having them passed on the command line. 409 410 NOTE: This option WILL override the PROM bootargs setting! 411 412config SUN_PM 413 bool 414 default y if SPARC32 415 help 416 Enable power management and CPU standby features on supported 417 SPARC platforms. 418 419config SPARC_LED 420 tristate "Sun4m LED driver" 421 depends on SPARC32 422 help 423 This driver toggles the front-panel LED on sun4m systems 424 in a user-specifiable manner. Its state can be probed 425 by reading /proc/led and its blinking mode can be changed 426 via writes to /proc/led 427 428config SERIAL_CONSOLE 429 bool 430 depends on SPARC32 431 default y 432 ---help--- 433 If you say Y here, it will be possible to use a serial port as the 434 system console (the system console is the device which receives all 435 kernel messages and warnings and which allows logins in single user 436 mode). This could be useful if some terminal or printer is connected 437 to that serial port. 438 439 Even if you say Y here, the currently visible virtual console 440 (/dev/tty0) will still be used as the system console by default, but 441 you can alter that using a kernel command line option such as 442 "console=ttyS1". (Try "man bootparam" or see the documentation of 443 your boot loader (silo) about how to pass options to the kernel at 444 boot time.) 445 446 If you don't have a graphics card installed and you say Y here, the 447 kernel will automatically use the first serial line, /dev/ttyS0, as 448 system console. 449 450 If unsure, say N. 451 452config SPARC_LEON 453 bool "Sparc Leon processor family" 454 depends on SPARC32 455 ---help--- 456 If you say Y here if you are running on a SPARC-LEON processor. 457 The LEON processor is a synthesizable VHDL model of the 458 SPARC-v8 standard. LEON is part of the GRLIB collection of 459 IP cores that are distributed under GPL. GRLIB can be downloaded 460 from www.gaisler.com. You can download a sparc-linux cross-compilation 461 toolchain at www.gaisler.com. 462 463endmenu 464 465menu "Bus options (PCI etc.)" 466config SBUS 467 bool 468 default y 469 470config SBUSCHAR 471 bool 472 default y 473 474config SUN_LDOMS 475 bool "Sun Logical Domains support" 476 depends on SPARC64 477 help 478 Say Y here is you want to support virtual devices via 479 Logical Domains. 480 481config PCI 482 bool "Support for PCI and PS/2 keyboard/mouse" 483 help 484 Find out whether your system includes a PCI bus. PCI is the name of 485 a bus system, i.e. the way the CPU talks to the other stuff inside 486 your box. If you say Y here, the kernel will include drivers and 487 infrastructure code to support PCI bus devices. 488 489 CONFIG_PCI is needed for all JavaStation's (including MrCoffee), 490 CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC. 491 All of these platforms are extremely obscure, so say N if unsure. 492 493config PCI_DOMAINS 494 def_bool PCI if SPARC64 495 496config PCI_SYSCALL 497 def_bool PCI 498 499source "drivers/pci/Kconfig" 500 501source "drivers/pcmcia/Kconfig" 502 503config SUN_OPENPROMFS 504 tristate "Openprom tree appears in /proc/openprom" 505 help 506 If you say Y, the OpenPROM device tree will be available as a 507 virtual file system, which you can mount to /proc/openprom by "mount 508 -t openpromfs none /proc/openprom". 509 510 To compile the /proc/openprom support as a module, choose M here: the 511 module will be called openpromfs. 512 513 Only choose N if you know in advance that you will not need to modify 514 OpenPROM settings on the running system. 515 516# Makefile helpers 517config SPARC32_PCI 518 bool 519 default y 520 depends on SPARC32 && PCI 521 522config SPARC64_PCI 523 bool 524 default y 525 depends on SPARC64 && PCI 526 527endmenu 528 529menu "Executable file formats" 530 531source "fs/Kconfig.binfmt" 532 533config COMPAT 534 bool 535 depends on SPARC64 536 default y 537 select COMPAT_BINFMT_ELF 538 539config SYSVIPC_COMPAT 540 bool 541 depends on COMPAT && SYSVIPC 542 default y 543 544endmenu 545 546source "net/Kconfig" 547 548source "drivers/Kconfig" 549 550source "drivers/sbus/char/Kconfig" 551 552source "fs/Kconfig" 553 554source "arch/sparc/Kconfig.debug" 555 556source "security/Kconfig" 557 558source "crypto/Kconfig" 559 560source "lib/Kconfig" 561