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 ARCH_WANT_IPC_PARSE_VERSION 31 select USE_GENERIC_SMP_HELPERS if SMP 32 select GENERIC_PCI_IOMAP 33 select HAVE_NMI_WATCHDOG if SPARC64 34 select HAVE_BPF_JIT 35 select GENERIC_SMP_IDLE_THREAD 36 select GENERIC_CMOS_UPDATE 37 select GENERIC_CLOCKEVENTS 38 select GENERIC_STRNCPY_FROM_USER 39 select GENERIC_STRNLEN_USER 40 41config SPARC32 42 def_bool !64BIT 43 select GENERIC_ATOMIC64 44 select CLZ_TAB 45 46config SPARC64 47 def_bool 64BIT 48 select ARCH_SUPPORTS_MSI 49 select HAVE_FUNCTION_TRACER 50 select HAVE_FUNCTION_GRAPH_TRACER 51 select HAVE_FUNCTION_GRAPH_FP_TEST 52 select HAVE_FUNCTION_TRACE_MCOUNT_TEST 53 select HAVE_KRETPROBES 54 select HAVE_KPROBES 55 select HAVE_RCU_TABLE_FREE if SMP 56 select HAVE_MEMBLOCK 57 select HAVE_MEMBLOCK_NODE_MAP 58 select HAVE_SYSCALL_WRAPPERS 59 select HAVE_DYNAMIC_FTRACE 60 select HAVE_FTRACE_MCOUNT_RECORD 61 select HAVE_SYSCALL_TRACEPOINTS 62 select RTC_DRV_CMOS 63 select RTC_DRV_BQ4802 64 select RTC_DRV_SUN4V 65 select RTC_DRV_STARFIRE 66 select HAVE_PERF_EVENTS 67 select PERF_USE_VMALLOC 68 select IRQ_PREFLOW_FASTEOI 69 select ARCH_HAVE_NMI_SAFE_CMPXCHG 70 select HAVE_C_RECORDMCOUNT 71 select NO_BOOTMEM 72 73config ARCH_DEFCONFIG 74 string 75 default "arch/sparc/configs/sparc32_defconfig" if SPARC32 76 default "arch/sparc/configs/sparc64_defconfig" if SPARC64 77 78# CONFIG_BITS can be used at source level to get 32/64 bits 79config BITS 80 int 81 default 32 if SPARC32 82 default 64 if SPARC64 83 84config IOMMU_HELPER 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" 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 274if SPARC64 275source "drivers/cpufreq/Kconfig" 276 277config US3_FREQ 278 tristate "UltraSPARC-III CPU Frequency driver" 279 depends on CPU_FREQ 280 select CPU_FREQ_TABLE 281 help 282 This adds the CPUFreq driver for UltraSPARC-III processors. 283 284 For details, take a look at <file:Documentation/cpu-freq>. 285 286 If in doubt, say N. 287 288config US2E_FREQ 289 tristate "UltraSPARC-IIe CPU Frequency driver" 290 depends on CPU_FREQ 291 select CPU_FREQ_TABLE 292 help 293 This adds the CPUFreq driver for UltraSPARC-IIe processors. 294 295 For details, take a look at <file:Documentation/cpu-freq>. 296 297 If in doubt, say N. 298 299endif 300 301config US3_MC 302 tristate "UltraSPARC-III Memory Controller driver" 303 depends on SPARC64 304 default y 305 help 306 This adds a driver for the UltraSPARC-III memory controller. 307 Loading this driver allows exact mnemonic strings to be 308 printed in the event of a memory error, so that the faulty DIMM 309 on the motherboard can be matched to the error. 310 311 If in doubt, say Y, as this information can be very useful. 312 313# Global things across all Sun machines. 314config GENERIC_LOCKBREAK 315 bool 316 default y 317 depends on SPARC64 && SMP && PREEMPT 318 319choice 320 prompt "SPARC64 Huge TLB Page Size" 321 depends on SPARC64 && HUGETLB_PAGE 322 default HUGETLB_PAGE_SIZE_4MB 323 324config HUGETLB_PAGE_SIZE_4MB 325 bool "4MB" 326 327config HUGETLB_PAGE_SIZE_512K 328 bool "512K" 329 330config HUGETLB_PAGE_SIZE_64K 331 depends on !SPARC64_PAGE_SIZE_64KB 332 bool "64K" 333 334endchoice 335 336config NUMA 337 bool "NUMA support" 338 depends on SPARC64 && SMP 339 340config NODES_SHIFT 341 int 342 default "4" 343 depends on NEED_MULTIPLE_NODES 344 345# Some NUMA nodes have memory ranges that span 346# other nodes. Even though a pfn is valid and 347# between a node's start and end pfns, it may not 348# reside on that node. See memmap_init_zone() 349# for details. 350config NODES_SPAN_OTHER_NODES 351 def_bool y 352 depends on NEED_MULTIPLE_NODES 353 354config ARCH_SELECT_MEMORY_MODEL 355 def_bool y if SPARC64 356 357config ARCH_SPARSEMEM_ENABLE 358 def_bool y if SPARC64 359 select SPARSEMEM_VMEMMAP_ENABLE 360 361config ARCH_SPARSEMEM_DEFAULT 362 def_bool y if SPARC64 363 364source "mm/Kconfig" 365 366config SCHED_SMT 367 bool "SMT (Hyperthreading) scheduler support" 368 depends on SPARC64 && SMP 369 default y 370 help 371 SMT scheduler support improves the CPU scheduler's decision making 372 when dealing with SPARC cpus at a cost of slightly increased overhead 373 in some places. If unsure say N here. 374 375config SCHED_MC 376 bool "Multi-core scheduler support" 377 depends on SPARC64 && SMP 378 default y 379 help 380 Multi-core scheduler support improves the CPU scheduler's decision 381 making when dealing with multi-core CPU chips at a cost of slightly 382 increased overhead in some places. If unsure say N here. 383 384source "kernel/Kconfig.preempt" 385 386config CMDLINE_BOOL 387 bool "Default bootloader kernel arguments" 388 depends on SPARC64 389 390config CMDLINE 391 string "Initial kernel command string" 392 depends on CMDLINE_BOOL 393 default "console=ttyS0,9600 root=/dev/sda1" 394 help 395 Say Y here if you want to be able to pass default arguments to 396 the kernel. This will be overridden by the bootloader, if you 397 use one (such as SILO). This is most useful if you want to boot 398 a kernel from TFTP, and want default options to be available 399 with having them passed on the command line. 400 401 NOTE: This option WILL override the PROM bootargs setting! 402 403config SUN_PM 404 bool 405 default y if SPARC32 406 help 407 Enable power management and CPU standby features on supported 408 SPARC platforms. 409 410config SPARC_LED 411 tristate "Sun4m LED driver" 412 depends on SPARC32 413 help 414 This driver toggles the front-panel LED on sun4m systems 415 in a user-specifiable manner. Its state can be probed 416 by reading /proc/led and its blinking mode can be changed 417 via writes to /proc/led 418 419config SERIAL_CONSOLE 420 bool 421 depends on SPARC32 422 default y 423 ---help--- 424 If you say Y here, it will be possible to use a serial port as the 425 system console (the system console is the device which receives all 426 kernel messages and warnings and which allows logins in single user 427 mode). This could be useful if some terminal or printer is connected 428 to that serial port. 429 430 Even if you say Y here, the currently visible virtual console 431 (/dev/tty0) will still be used as the system console by default, but 432 you can alter that using a kernel command line option such as 433 "console=ttyS1". (Try "man bootparam" or see the documentation of 434 your boot loader (silo) about how to pass options to the kernel at 435 boot time.) 436 437 If you don't have a graphics card installed and you say Y here, the 438 kernel will automatically use the first serial line, /dev/ttyS0, as 439 system console. 440 441 If unsure, say N. 442 443config SPARC_LEON 444 bool "Sparc Leon processor family" 445 depends on SPARC32 446 ---help--- 447 If you say Y here if you are running on a SPARC-LEON processor. 448 The LEON processor is a synthesizable VHDL model of the 449 SPARC-v8 standard. LEON is part of the GRLIB collection of 450 IP cores that are distributed under GPL. GRLIB can be downloaded 451 from www.gaisler.com. You can download a sparc-linux cross-compilation 452 toolchain at www.gaisler.com. 453 454if SPARC_LEON 455menu "U-Boot options" 456 457config UBOOT_LOAD_ADDR 458 hex "uImage Load Address" 459 default 0x40004000 460 ---help--- 461 U-Boot kernel load address, the address in physical address space 462 where u-boot will place the Linux kernel before booting it. 463 This address is normally the base address of main memory + 0x4000. 464 465config UBOOT_FLASH_ADDR 466 hex "uImage.o Load Address" 467 default 0x00080000 468 ---help--- 469 Optional setting only affecting the uImage.o ELF-image used to 470 download the uImage file to the target using a ELF-loader other than 471 U-Boot. It may for example be used to download an uImage to FLASH with 472 the GRMON utility before even starting u-boot. 473 474config UBOOT_ENTRY_ADDR 475 hex "uImage Entry Address" 476 default 0xf0004000 477 ---help--- 478 Do not change this unless you know what you're doing. This is 479 hardcoded by the SPARC32 and LEON port. 480 481 This is the virtual address u-boot jumps to when booting the Linux 482 Kernel. 483 484endmenu 485endif 486 487endmenu 488 489menu "Bus options (PCI etc.)" 490config SBUS 491 bool 492 default y 493 494config SBUSCHAR 495 bool 496 default y 497 498config SUN_LDOMS 499 bool "Sun Logical Domains support" 500 depends on SPARC64 501 help 502 Say Y here is you want to support virtual devices via 503 Logical Domains. 504 505config PCI 506 bool "Support for PCI and PS/2 keyboard/mouse" 507 help 508 Find out whether your system includes a PCI bus. PCI is the name of 509 a bus system, i.e. the way the CPU talks to the other stuff inside 510 your box. If you say Y here, the kernel will include drivers and 511 infrastructure code to support PCI bus devices. 512 513 CONFIG_PCI is needed for all JavaStation's (including MrCoffee), 514 CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC. 515 All of these platforms are extremely obscure, so say N if unsure. 516 517config PCI_DOMAINS 518 def_bool PCI if SPARC64 519 520config PCI_SYSCALL 521 def_bool PCI 522 523config PCIC_PCI 524 bool 525 depends on PCI && SPARC32 && !SPARC_LEON 526 default y 527 528config LEON_PCI 529 bool 530 depends on PCI && SPARC_LEON 531 default y 532 533config GRPCI2 534 bool "GRPCI2 Host Bridge Support" 535 depends on LEON_PCI 536 default y 537 help 538 Say Y here to include the GRPCI2 Host Bridge Driver. 539 540source "drivers/pci/Kconfig" 541 542source "drivers/pcmcia/Kconfig" 543 544config SUN_OPENPROMFS 545 tristate "Openprom tree appears in /proc/openprom" 546 help 547 If you say Y, the OpenPROM device tree will be available as a 548 virtual file system, which you can mount to /proc/openprom by "mount 549 -t openpromfs none /proc/openprom". 550 551 To compile the /proc/openprom support as a module, choose M here: the 552 module will be called openpromfs. 553 554 Only choose N if you know in advance that you will not need to modify 555 OpenPROM settings on the running system. 556 557# Makefile helper 558config SPARC64_PCI 559 bool 560 default y 561 depends on SPARC64 && PCI 562 563endmenu 564 565menu "Executable file formats" 566 567source "fs/Kconfig.binfmt" 568 569config COMPAT 570 bool 571 depends on SPARC64 572 default y 573 select COMPAT_BINFMT_ELF 574 select ARCH_WANT_OLD_COMPAT_IPC 575 576config SYSVIPC_COMPAT 577 bool 578 depends on COMPAT && SYSVIPC 579 default y 580 581config KEYS_COMPAT 582 def_bool y if COMPAT && KEYS 583 584endmenu 585 586source "net/Kconfig" 587 588source "drivers/Kconfig" 589 590source "drivers/sbus/char/Kconfig" 591 592source "fs/Kconfig" 593 594source "arch/sparc/Kconfig.debug" 595 596source "security/Kconfig" 597 598source "crypto/Kconfig" 599 600source "lib/Kconfig" 601