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 ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE 26 select RTC_CLASS 27 select RTC_DRV_M48T59 28 select RTC_SYSTOHC 29 select HAVE_DMA_API_DEBUG 30 select HAVE_ARCH_JUMP_LABEL if SPARC64 31 select GENERIC_IRQ_SHOW 32 select ARCH_WANT_IPC_PARSE_VERSION 33 select GENERIC_PCI_IOMAP 34 select HAVE_NMI_WATCHDOG if SPARC64 35 select HAVE_CBPF_JIT 36 select HAVE_DEBUG_BUGVERBOSE 37 select GENERIC_SMP_IDLE_THREAD 38 select GENERIC_CLOCKEVENTS 39 select GENERIC_STRNCPY_FROM_USER 40 select GENERIC_STRNLEN_USER 41 select MODULES_USE_ELF_RELA 42 select ODD_RT_SIGACTION 43 select OLD_SIGSUSPEND 44 select ARCH_HAS_SG_CHAIN 45 select CPU_NO_EFFICIENT_FFS 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_FUNCTION_GRAPH_FP_TEST 59 select HAVE_KRETPROBES 60 select HAVE_KPROBES 61 select HAVE_RCU_TABLE_FREE if SMP 62 select HAVE_MEMBLOCK 63 select HAVE_MEMBLOCK_NODE_MAP 64 select HAVE_ARCH_TRANSPARENT_HUGEPAGE 65 select HAVE_DYNAMIC_FTRACE 66 select HAVE_FTRACE_MCOUNT_RECORD 67 select HAVE_SYSCALL_TRACEPOINTS 68 select HAVE_CONTEXT_TRACKING 69 select HAVE_DEBUG_KMEMLEAK 70 select SPARSE_IRQ 71 select RTC_DRV_CMOS 72 select RTC_DRV_BQ4802 73 select RTC_DRV_SUN4V 74 select RTC_DRV_STARFIRE 75 select HAVE_PERF_EVENTS 76 select PERF_USE_VMALLOC 77 select IRQ_PREFLOW_FASTEOI 78 select ARCH_HAVE_NMI_SAFE_CMPXCHG 79 select HAVE_C_RECORDMCOUNT 80 select NO_BOOTMEM 81 select HAVE_ARCH_AUDITSYSCALL 82 select ARCH_SUPPORTS_ATOMIC_RMW 83 select HAVE_NMI 84 85config ARCH_DEFCONFIG 86 string 87 default "arch/sparc/configs/sparc32_defconfig" if SPARC32 88 default "arch/sparc/configs/sparc64_defconfig" if SPARC64 89 90config ARCH_PROC_KCORE_TEXT 91 def_bool y 92 93config IOMMU_HELPER 94 bool 95 default y if SPARC64 96 97config STACKTRACE_SUPPORT 98 bool 99 default y if SPARC64 100 101config LOCKDEP_SUPPORT 102 bool 103 default y if SPARC64 104 105config ARCH_HIBERNATION_POSSIBLE 106 def_bool y if SPARC64 107 108config AUDIT_ARCH 109 bool 110 default y 111 112config HAVE_SETUP_PER_CPU_AREA 113 def_bool y if SPARC64 114 115config NEED_PER_CPU_EMBED_FIRST_CHUNK 116 def_bool y if SPARC64 117 118config NEED_PER_CPU_PAGE_FIRST_CHUNK 119 def_bool y if SPARC64 120 121config MMU 122 bool 123 default y 124 125config HIGHMEM 126 bool 127 default y if SPARC32 128 129config ZONE_DMA 130 bool 131 default y if SPARC32 132 133config NEED_DMA_MAP_STATE 134 def_bool y 135 136config NEED_SG_DMA_LENGTH 137 def_bool y 138 139config GENERIC_ISA_DMA 140 bool 141 default y if SPARC32 142 143config ARCH_SUPPORTS_DEBUG_PAGEALLOC 144 def_bool y if SPARC64 145 146config PGTABLE_LEVELS 147 default 4 if 64BIT 148 default 3 149 150source "init/Kconfig" 151 152source "kernel/Kconfig.freezer" 153 154menu "Processor type and features" 155 156config SMP 157 bool "Symmetric multi-processing support" 158 ---help--- 159 This enables support for systems with more than one CPU. If you have 160 a system with only one CPU, say N. If you have a system with more 161 than one CPU, say Y. 162 163 If you say N here, the kernel will run on uni- and multiprocessor 164 machines, but will use only one CPU of a multiprocessor machine. If 165 you say Y here, the kernel will run on many, but not all, 166 uniprocessor machines. On a uniprocessor machine, the kernel 167 will run faster if you say N here. 168 169 People using multiprocessor machines who say Y here should also say 170 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power 171 Management" code will be disabled if you say Y here. 172 173 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO 174 available at <http://www.tldp.org/docs.html#howto>. 175 176 If you don't know what to do here, say N. 177 178config NR_CPUS 179 int "Maximum number of CPUs" 180 depends on SMP 181 range 2 32 if SPARC32 182 range 2 1024 if SPARC64 183 default 32 if SPARC32 184 default 64 if SPARC64 185 186source kernel/Kconfig.hz 187 188config RWSEM_GENERIC_SPINLOCK 189 bool 190 default y if SPARC32 191 192config RWSEM_XCHGADD_ALGORITHM 193 bool 194 default y if SPARC64 195 196config GENERIC_HWEIGHT 197 bool 198 default y 199 200config GENERIC_CALIBRATE_DELAY 201 bool 202 default y 203 204config ARCH_MAY_HAVE_PC_FDC 205 bool 206 default y 207 208config EMULATED_CMPXCHG 209 bool 210 default y if SPARC32 211 help 212 Sparc32 does not have a CAS instruction like sparc64. cmpxchg() 213 is emulated, and therefore it is not completely atomic. 214 215# Makefile helpers 216config SPARC32_SMP 217 bool 218 default y 219 depends on SPARC32 && SMP 220 221config SPARC64_SMP 222 bool 223 default y 224 depends on SPARC64 && SMP 225 226config EARLYFB 227 bool "Support for early boot text console" 228 default y 229 depends on SPARC64 230 help 231 Say Y here to enable a faster early framebuffer boot console. 232 233config SECCOMP 234 bool "Enable seccomp to safely compute untrusted bytecode" 235 depends on SPARC64 && PROC_FS 236 default y 237 help 238 This kernel feature is useful for number crunching applications 239 that may need to compute untrusted bytecode during their 240 execution. By using pipes or other transports made available to 241 the process as file descriptors supporting the read/write 242 syscalls, it's possible to isolate those applications in 243 their own address space using seccomp. Once seccomp is 244 enabled via /proc/<pid>/seccomp, it cannot be disabled 245 and the task is only allowed to execute a few safe syscalls 246 defined by each seccomp mode. 247 248 If unsure, say Y. Only embedded should say N here. 249 250config HOTPLUG_CPU 251 bool "Support for hot-pluggable CPUs" 252 depends on SPARC64 && SMP 253 help 254 Say Y here to experiment with turning CPUs off and on. CPUs 255 can be controlled through /sys/devices/system/cpu/cpu#. 256 Say N if you want to disable CPU hotplug. 257 258if SPARC64 259source "drivers/cpufreq/Kconfig" 260endif 261 262config US3_MC 263 tristate "UltraSPARC-III Memory Controller driver" 264 depends on SPARC64 265 default y 266 help 267 This adds a driver for the UltraSPARC-III memory controller. 268 Loading this driver allows exact mnemonic strings to be 269 printed in the event of a memory error, so that the faulty DIMM 270 on the motherboard can be matched to the error. 271 272 If in doubt, say Y, as this information can be very useful. 273 274# Global things across all Sun machines. 275config GENERIC_LOCKBREAK 276 bool 277 default y 278 depends on SPARC64 && SMP && PREEMPT 279 280config NUMA 281 bool "NUMA support" 282 depends on SPARC64 && SMP 283 284config NODES_SHIFT 285 int 286 default "4" 287 depends on NEED_MULTIPLE_NODES 288 289# Some NUMA nodes have memory ranges that span 290# other nodes. Even though a pfn is valid and 291# between a node's start and end pfns, it may not 292# reside on that node. See memmap_init_zone() 293# for details. 294config NODES_SPAN_OTHER_NODES 295 def_bool y 296 depends on NEED_MULTIPLE_NODES 297 298config ARCH_SELECT_MEMORY_MODEL 299 def_bool y if SPARC64 300 301config ARCH_SPARSEMEM_ENABLE 302 def_bool y if SPARC64 303 select SPARSEMEM_VMEMMAP_ENABLE 304 305config ARCH_SPARSEMEM_DEFAULT 306 def_bool y if SPARC64 307 308source "mm/Kconfig" 309 310if SPARC64 311source "kernel/power/Kconfig" 312endif 313 314config SCHED_SMT 315 bool "SMT (Hyperthreading) scheduler support" 316 depends on SPARC64 && SMP 317 default y 318 help 319 SMT scheduler support improves the CPU scheduler's decision making 320 when dealing with SPARC cpus at a cost of slightly increased overhead 321 in some places. If unsure say N here. 322 323config SCHED_MC 324 bool "Multi-core scheduler support" 325 depends on SPARC64 && SMP 326 default y 327 help 328 Multi-core scheduler support improves the CPU scheduler's decision 329 making when dealing with multi-core CPU chips at a cost of slightly 330 increased overhead in some places. If unsure say N here. 331 332source "kernel/Kconfig.preempt" 333 334config CMDLINE_BOOL 335 bool "Default bootloader kernel arguments" 336 depends on SPARC64 337 338config CMDLINE 339 string "Initial kernel command string" 340 depends on CMDLINE_BOOL 341 default "console=ttyS0,9600 root=/dev/sda1" 342 help 343 Say Y here if you want to be able to pass default arguments to 344 the kernel. This will be overridden by the bootloader, if you 345 use one (such as SILO). This is most useful if you want to boot 346 a kernel from TFTP, and want default options to be available 347 with having them passed on the command line. 348 349 NOTE: This option WILL override the PROM bootargs setting! 350 351config SUN_PM 352 bool 353 default y if SPARC32 354 help 355 Enable power management and CPU standby features on supported 356 SPARC platforms. 357 358config SPARC_LED 359 tristate "Sun4m LED driver" 360 depends on SPARC32 361 help 362 This driver toggles the front-panel LED on sun4m systems 363 in a user-specifiable manner. Its state can be probed 364 by reading /proc/led and its blinking mode can be changed 365 via writes to /proc/led 366 367config SERIAL_CONSOLE 368 bool 369 depends on SPARC32 370 default y 371 ---help--- 372 If you say Y here, it will be possible to use a serial port as the 373 system console (the system console is the device which receives all 374 kernel messages and warnings and which allows logins in single user 375 mode). This could be useful if some terminal or printer is connected 376 to that serial port. 377 378 Even if you say Y here, the currently visible virtual console 379 (/dev/tty0) will still be used as the system console by default, but 380 you can alter that using a kernel command line option such as 381 "console=ttyS1". (Try "man bootparam" or see the documentation of 382 your boot loader (silo) about how to pass options to the kernel at 383 boot time.) 384 385 If you don't have a graphics card installed and you say Y here, the 386 kernel will automatically use the first serial line, /dev/ttyS0, as 387 system console. 388 389 If unsure, say N. 390 391config SPARC_LEON 392 bool "Sparc Leon processor family" 393 depends on SPARC32 394 select USB_EHCI_BIG_ENDIAN_MMIO 395 select USB_EHCI_BIG_ENDIAN_DESC 396 ---help--- 397 If you say Y here if you are running on a SPARC-LEON processor. 398 The LEON processor is a synthesizable VHDL model of the 399 SPARC-v8 standard. LEON is part of the GRLIB collection of 400 IP cores that are distributed under GPL. GRLIB can be downloaded 401 from www.gaisler.com. You can download a sparc-linux cross-compilation 402 toolchain at www.gaisler.com. 403 404if SPARC_LEON 405menu "U-Boot options" 406 407config UBOOT_LOAD_ADDR 408 hex "uImage Load Address" 409 default 0x40004000 410 ---help--- 411 U-Boot kernel load address, the address in physical address space 412 where u-boot will place the Linux kernel before booting it. 413 This address is normally the base address of main memory + 0x4000. 414 415config UBOOT_FLASH_ADDR 416 hex "uImage.o Load Address" 417 default 0x00080000 418 ---help--- 419 Optional setting only affecting the uImage.o ELF-image used to 420 download the uImage file to the target using a ELF-loader other than 421 U-Boot. It may for example be used to download an uImage to FLASH with 422 the GRMON utility before even starting u-boot. 423 424config UBOOT_ENTRY_ADDR 425 hex "uImage Entry Address" 426 default 0xf0004000 427 ---help--- 428 Do not change this unless you know what you're doing. This is 429 hardcoded by the SPARC32 and LEON port. 430 431 This is the virtual address u-boot jumps to when booting the Linux 432 Kernel. 433 434endmenu 435endif 436 437endmenu 438 439menu "Bus options (PCI etc.)" 440config SBUS 441 bool 442 default y 443 444config SBUSCHAR 445 bool 446 default y 447 448config SUN_LDOMS 449 bool "Sun Logical Domains support" 450 depends on SPARC64 451 help 452 Say Y here is you want to support virtual devices via 453 Logical Domains. 454 455config PCI 456 bool "Support for PCI and PS/2 keyboard/mouse" 457 help 458 Find out whether your system includes a PCI bus. PCI is the name of 459 a bus system, i.e. the way the CPU talks to the other stuff inside 460 your box. If you say Y here, the kernel will include drivers and 461 infrastructure code to support PCI bus devices. 462 463 CONFIG_PCI is needed for all JavaStation's (including MrCoffee), 464 CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC. 465 All of these platforms are extremely obscure, so say N if unsure. 466 467config PCI_DOMAINS 468 def_bool PCI if SPARC64 469 470config PCI_SYSCALL 471 def_bool PCI 472 473config PCIC_PCI 474 bool 475 depends on PCI && SPARC32 && !SPARC_LEON 476 default y 477 478config LEON_PCI 479 bool 480 depends on PCI && SPARC_LEON 481 default y 482 483config SPARC_GRPCI1 484 bool "GRPCI Host Bridge Support" 485 depends on LEON_PCI 486 default y 487 help 488 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI 489 PCI host controller is typically found in GRLIB SPARC32/LEON 490 systems. The driver has one property (all_pci_errors) controlled 491 from the bootloader that makes the GRPCI to generate interrupts 492 on detected PCI Parity and System errors. 493 494config SPARC_GRPCI2 495 bool "GRPCI2 Host Bridge Support" 496 depends on LEON_PCI 497 default y 498 help 499 Say Y here to include the GRPCI2 Host Bridge Driver. 500 501source "drivers/pci/Kconfig" 502 503source "drivers/pcmcia/Kconfig" 504 505config SUN_OPENPROMFS 506 tristate "Openprom tree appears in /proc/openprom" 507 help 508 If you say Y, the OpenPROM device tree will be available as a 509 virtual file system, which you can mount to /proc/openprom by "mount 510 -t openpromfs none /proc/openprom". 511 512 To compile the /proc/openprom support as a module, choose M here: the 513 module will be called openpromfs. 514 515 Only choose N if you know in advance that you will not need to modify 516 OpenPROM settings on the running system. 517 518# Makefile helpers 519config SPARC64_PCI 520 bool 521 default y 522 depends on SPARC64 && PCI 523 524config SPARC64_PCI_MSI 525 bool 526 default y 527 depends on SPARC64_PCI && PCI_MSI 528 529endmenu 530 531menu "Executable file formats" 532 533source "fs/Kconfig.binfmt" 534 535config COMPAT 536 bool 537 depends on SPARC64 538 default y 539 select COMPAT_BINFMT_ELF 540 select HAVE_UID16 541 select ARCH_WANT_OLD_COMPAT_IPC 542 select COMPAT_OLD_SIGACTION 543 544config SYSVIPC_COMPAT 545 bool 546 depends on COMPAT && SYSVIPC 547 default y 548 549config KEYS_COMPAT 550 def_bool y if COMPAT && KEYS 551 552endmenu 553 554source "net/Kconfig" 555 556source "drivers/Kconfig" 557 558source "drivers/sbus/char/Kconfig" 559 560source "fs/Kconfig" 561 562source "arch/sparc/Kconfig.debug" 563 564source "security/Kconfig" 565 566source "crypto/Kconfig" 567 568source "lib/Kconfig" 569