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 ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI 16 select ARCH_MIGHT_HAVE_PC_SERIO 17 select OF 18 select OF_PROMTREE 19 select HAVE_IDE 20 select HAVE_OPROFILE 21 select HAVE_ARCH_KGDB if !SMP || SPARC64 22 select HAVE_ARCH_TRACEHOOK 23 select HAVE_EXIT_THREAD 24 select SYSCTL_EXCEPTION_TRACE 25 select RTC_CLASS 26 select RTC_DRV_M48T59 27 select RTC_SYSTOHC 28 select HAVE_DMA_API_DEBUG 29 select HAVE_ARCH_JUMP_LABEL if SPARC64 30 select GENERIC_IRQ_SHOW 31 select ARCH_WANT_IPC_PARSE_VERSION 32 select GENERIC_PCI_IOMAP 33 select HAVE_NMI_WATCHDOG if SPARC64 34 select HAVE_CBPF_JIT 35 select HAVE_DEBUG_BUGVERBOSE 36 select GENERIC_SMP_IDLE_THREAD 37 select GENERIC_CLOCKEVENTS 38 select GENERIC_STRNCPY_FROM_USER 39 select GENERIC_STRNLEN_USER 40 select MODULES_USE_ELF_RELA 41 select ODD_RT_SIGACTION 42 select OLD_SIGSUSPEND 43 select ARCH_HAS_SG_CHAIN 44 select CPU_NO_EFFICIENT_FFS 45 select HAVE_ARCH_HARDENED_USERCOPY 46 47config SPARC32 48 def_bool !64BIT 49 select GENERIC_ATOMIC64 50 select CLZ_TAB 51 select HAVE_UID16 52 select OLD_SIGACTION 53 54config SPARC64 55 def_bool 64BIT 56 select HAVE_FUNCTION_TRACER 57 select HAVE_FUNCTION_GRAPH_TRACER 58 select HAVE_KRETPROBES 59 select HAVE_KPROBES 60 select HAVE_RCU_TABLE_FREE if SMP 61 select HAVE_MEMBLOCK 62 select HAVE_MEMBLOCK_NODE_MAP 63 select HAVE_ARCH_TRANSPARENT_HUGEPAGE 64 select HAVE_DYNAMIC_FTRACE 65 select HAVE_FTRACE_MCOUNT_RECORD 66 select HAVE_SYSCALL_TRACEPOINTS 67 select HAVE_CONTEXT_TRACKING 68 select HAVE_DEBUG_KMEMLEAK 69 select SPARSE_IRQ 70 select RTC_DRV_CMOS 71 select RTC_DRV_BQ4802 72 select RTC_DRV_SUN4V 73 select RTC_DRV_STARFIRE 74 select HAVE_PERF_EVENTS 75 select PERF_USE_VMALLOC 76 select IRQ_PREFLOW_FASTEOI 77 select ARCH_HAVE_NMI_SAFE_CMPXCHG 78 select HAVE_C_RECORDMCOUNT 79 select NO_BOOTMEM 80 select HAVE_ARCH_AUDITSYSCALL 81 select ARCH_SUPPORTS_ATOMIC_RMW 82 select HAVE_NMI 83 84config ARCH_DEFCONFIG 85 string 86 default "arch/sparc/configs/sparc32_defconfig" if SPARC32 87 default "arch/sparc/configs/sparc64_defconfig" if SPARC64 88 89config ARCH_PROC_KCORE_TEXT 90 def_bool y 91 92config IOMMU_HELPER 93 bool 94 default y if SPARC64 95 96config STACKTRACE_SUPPORT 97 bool 98 default y if SPARC64 99 100config LOCKDEP_SUPPORT 101 bool 102 default y if SPARC64 103 104config ARCH_HIBERNATION_POSSIBLE 105 def_bool y if SPARC64 106 107config AUDIT_ARCH 108 bool 109 default y 110 111config HAVE_SETUP_PER_CPU_AREA 112 def_bool y if SPARC64 113 114config NEED_PER_CPU_EMBED_FIRST_CHUNK 115 def_bool y if SPARC64 116 117config NEED_PER_CPU_PAGE_FIRST_CHUNK 118 def_bool y if SPARC64 119 120config MMU 121 bool 122 default y 123 124config HIGHMEM 125 bool 126 default y if SPARC32 127 128config ZONE_DMA 129 bool 130 default y if SPARC32 131 132config NEED_DMA_MAP_STATE 133 def_bool y 134 135config NEED_SG_DMA_LENGTH 136 def_bool y 137 138config GENERIC_ISA_DMA 139 bool 140 default y if SPARC32 141 142config ARCH_SUPPORTS_DEBUG_PAGEALLOC 143 def_bool y if SPARC64 144 145config PGTABLE_LEVELS 146 default 4 if 64BIT 147 default 3 148 149source "init/Kconfig" 150 151source "kernel/Kconfig.freezer" 152 153menu "Processor type and features" 154 155config SMP 156 bool "Symmetric multi-processing support" 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 uni- 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 uniprocessor machines. On a uniprocessor 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 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 232config SECCOMP 233 bool "Enable seccomp to safely compute untrusted bytecode" 234 depends on SPARC64 && PROC_FS 235 default y 236 help 237 This kernel feature is useful for number crunching applications 238 that may need to compute untrusted bytecode during their 239 execution. By using pipes or other transports made available to 240 the process as file descriptors supporting the read/write 241 syscalls, it's possible to isolate those applications in 242 their own address space using seccomp. Once seccomp is 243 enabled via /proc/<pid>/seccomp, it cannot be disabled 244 and the task is only allowed to execute a few safe syscalls 245 defined by each seccomp mode. 246 247 If unsure, say Y. Only embedded should say N here. 248 249config HOTPLUG_CPU 250 bool "Support for hot-pluggable CPUs" 251 depends on SPARC64 && SMP 252 help 253 Say Y here to experiment with turning CPUs off and on. CPUs 254 can be controlled through /sys/devices/system/cpu/cpu#. 255 Say N if you want to disable CPU hotplug. 256 257if SPARC64 258source "drivers/cpufreq/Kconfig" 259endif 260 261config US3_MC 262 tristate "UltraSPARC-III Memory Controller driver" 263 depends on SPARC64 264 default y 265 help 266 This adds a driver for the UltraSPARC-III memory controller. 267 Loading this driver allows exact mnemonic strings to be 268 printed in the event of a memory error, so that the faulty DIMM 269 on the motherboard can be matched to the error. 270 271 If in doubt, say Y, as this information can be very useful. 272 273# Global things across all Sun machines. 274config GENERIC_LOCKBREAK 275 bool 276 default y 277 depends on SPARC64 && SMP && PREEMPT 278 279config NUMA 280 bool "NUMA support" 281 depends on SPARC64 && SMP 282 283config NODES_SHIFT 284 int 285 default "4" 286 depends on NEED_MULTIPLE_NODES 287 288# Some NUMA nodes have memory ranges that span 289# other nodes. Even though a pfn is valid and 290# between a node's start and end pfns, it may not 291# reside on that node. See memmap_init_zone() 292# for details. 293config NODES_SPAN_OTHER_NODES 294 def_bool y 295 depends on NEED_MULTIPLE_NODES 296 297config ARCH_SELECT_MEMORY_MODEL 298 def_bool y if SPARC64 299 300config ARCH_SPARSEMEM_ENABLE 301 def_bool y if SPARC64 302 select SPARSEMEM_VMEMMAP_ENABLE 303 304config ARCH_SPARSEMEM_DEFAULT 305 def_bool y if SPARC64 306 307source "mm/Kconfig" 308 309if SPARC64 310source "kernel/power/Kconfig" 311endif 312 313config SCHED_SMT 314 bool "SMT (Hyperthreading) scheduler support" 315 depends on SPARC64 && SMP 316 default y 317 help 318 SMT scheduler support improves the CPU scheduler's decision making 319 when dealing with SPARC cpus at a cost of slightly increased overhead 320 in some places. If unsure say N here. 321 322config SCHED_MC 323 bool "Multi-core scheduler support" 324 depends on SPARC64 && SMP 325 default y 326 help 327 Multi-core scheduler support improves the CPU scheduler's decision 328 making when dealing with multi-core CPU chips at a cost of slightly 329 increased overhead in some places. If unsure say N here. 330 331source "kernel/Kconfig.preempt" 332 333config CMDLINE_BOOL 334 bool "Default bootloader kernel arguments" 335 depends on SPARC64 336 337config CMDLINE 338 string "Initial kernel command string" 339 depends on CMDLINE_BOOL 340 default "console=ttyS0,9600 root=/dev/sda1" 341 help 342 Say Y here if you want to be able to pass default arguments to 343 the kernel. This will be overridden by the bootloader, if you 344 use one (such as SILO). This is most useful if you want to boot 345 a kernel from TFTP, and want default options to be available 346 with having them passed on the command line. 347 348 NOTE: This option WILL override the PROM bootargs setting! 349 350config SUN_PM 351 bool 352 default y if SPARC32 353 help 354 Enable power management and CPU standby features on supported 355 SPARC platforms. 356 357config SPARC_LED 358 tristate "Sun4m LED driver" 359 depends on SPARC32 360 help 361 This driver toggles the front-panel LED on sun4m systems 362 in a user-specifiable manner. Its state can be probed 363 by reading /proc/led and its blinking mode can be changed 364 via writes to /proc/led 365 366config SERIAL_CONSOLE 367 bool 368 depends on SPARC32 369 default y 370 ---help--- 371 If you say Y here, it will be possible to use a serial port as the 372 system console (the system console is the device which receives all 373 kernel messages and warnings and which allows logins in single user 374 mode). This could be useful if some terminal or printer is connected 375 to that serial port. 376 377 Even if you say Y here, the currently visible virtual console 378 (/dev/tty0) will still be used as the system console by default, but 379 you can alter that using a kernel command line option such as 380 "console=ttyS1". (Try "man bootparam" or see the documentation of 381 your boot loader (silo) about how to pass options to the kernel at 382 boot time.) 383 384 If you don't have a graphics card installed and you say Y here, the 385 kernel will automatically use the first serial line, /dev/ttyS0, as 386 system console. 387 388 If unsure, say N. 389 390config SPARC_LEON 391 bool "Sparc Leon processor family" 392 depends on SPARC32 393 select USB_EHCI_BIG_ENDIAN_MMIO 394 select USB_EHCI_BIG_ENDIAN_DESC 395 ---help--- 396 If you say Y here if you are running on a SPARC-LEON processor. 397 The LEON processor is a synthesizable VHDL model of the 398 SPARC-v8 standard. LEON is part of the GRLIB collection of 399 IP cores that are distributed under GPL. GRLIB can be downloaded 400 from www.gaisler.com. You can download a sparc-linux cross-compilation 401 toolchain at www.gaisler.com. 402 403if SPARC_LEON 404menu "U-Boot options" 405 406config UBOOT_LOAD_ADDR 407 hex "uImage Load Address" 408 default 0x40004000 409 ---help--- 410 U-Boot kernel load address, the address in physical address space 411 where u-boot will place the Linux kernel before booting it. 412 This address is normally the base address of main memory + 0x4000. 413 414config UBOOT_FLASH_ADDR 415 hex "uImage.o Load Address" 416 default 0x00080000 417 ---help--- 418 Optional setting only affecting the uImage.o ELF-image used to 419 download the uImage file to the target using a ELF-loader other than 420 U-Boot. It may for example be used to download an uImage to FLASH with 421 the GRMON utility before even starting u-boot. 422 423config UBOOT_ENTRY_ADDR 424 hex "uImage Entry Address" 425 default 0xf0004000 426 ---help--- 427 Do not change this unless you know what you're doing. This is 428 hardcoded by the SPARC32 and LEON port. 429 430 This is the virtual address u-boot jumps to when booting the Linux 431 Kernel. 432 433endmenu 434endif 435 436endmenu 437 438menu "Bus options (PCI etc.)" 439config SBUS 440 bool 441 default y 442 443config SBUSCHAR 444 bool 445 default y 446 447config SUN_LDOMS 448 bool "Sun Logical Domains support" 449 depends on SPARC64 450 help 451 Say Y here is you want to support virtual devices via 452 Logical Domains. 453 454config PCI 455 bool "Support for PCI and PS/2 keyboard/mouse" 456 help 457 Find out whether your system includes a PCI bus. PCI is the name of 458 a bus system, i.e. the way the CPU talks to the other stuff inside 459 your box. If you say Y here, the kernel will include drivers and 460 infrastructure code to support PCI bus devices. 461 462 CONFIG_PCI is needed for all JavaStation's (including MrCoffee), 463 CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC. 464 All of these platforms are extremely obscure, so say N if unsure. 465 466config PCI_DOMAINS 467 def_bool PCI if SPARC64 468 469config PCI_SYSCALL 470 def_bool PCI 471 472config PCIC_PCI 473 bool 474 depends on PCI && SPARC32 && !SPARC_LEON 475 default y 476 477config LEON_PCI 478 bool 479 depends on PCI && SPARC_LEON 480 default y 481 482config SPARC_GRPCI1 483 bool "GRPCI Host Bridge Support" 484 depends on LEON_PCI 485 default y 486 help 487 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI 488 PCI host controller is typically found in GRLIB SPARC32/LEON 489 systems. The driver has one property (all_pci_errors) controlled 490 from the bootloader that makes the GRPCI to generate interrupts 491 on detected PCI Parity and System errors. 492 493config SPARC_GRPCI2 494 bool "GRPCI2 Host Bridge Support" 495 depends on LEON_PCI 496 default y 497 help 498 Say Y here to include the GRPCI2 Host Bridge Driver. 499 500source "drivers/pci/Kconfig" 501 502source "drivers/pcmcia/Kconfig" 503 504config SUN_OPENPROMFS 505 tristate "Openprom tree appears in /proc/openprom" 506 help 507 If you say Y, the OpenPROM device tree will be available as a 508 virtual file system, which you can mount to /proc/openprom by "mount 509 -t openpromfs none /proc/openprom". 510 511 To compile the /proc/openprom support as a module, choose M here: the 512 module will be called openpromfs. 513 514 Only choose N if you know in advance that you will not need to modify 515 OpenPROM settings on the running system. 516 517# Makefile helpers 518config SPARC64_PCI 519 bool 520 default y 521 depends on SPARC64 && PCI 522 523config SPARC64_PCI_MSI 524 bool 525 default y 526 depends on SPARC64_PCI && PCI_MSI 527 528endmenu 529 530menu "Executable file formats" 531 532source "fs/Kconfig.binfmt" 533 534config COMPAT 535 bool 536 depends on SPARC64 537 default y 538 select COMPAT_BINFMT_ELF 539 select HAVE_UID16 540 select ARCH_WANT_OLD_COMPAT_IPC 541 select COMPAT_OLD_SIGACTION 542 543config SYSVIPC_COMPAT 544 bool 545 depends on COMPAT && SYSVIPC 546 default y 547 548config KEYS_COMPAT 549 def_bool y if COMPAT && KEYS 550 551endmenu 552 553source "net/Kconfig" 554 555source "drivers/Kconfig" 556 557source "drivers/sbus/char/Kconfig" 558 559source "fs/Kconfig" 560 561source "arch/sparc/Kconfig.debug" 562 563source "security/Kconfig" 564 565source "crypto/Kconfig" 566 567source "lib/Kconfig" 568