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