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 SYSCTL_EXCEPTION_TRACE 24 select ARCH_WANT_OPTIONAL_GPIOLIB 25 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE 26 select RTC_CLASS 27 select RTC_DRV_M48T59 28 select HAVE_DMA_ATTRS 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_BPF_JIT 36 select HAVE_DEBUG_BUGVERBOSE 37 select GENERIC_SMP_IDLE_THREAD 38 select GENERIC_CMOS_UPDATE 39 select GENERIC_CLOCKEVENTS 40 select GENERIC_STRNCPY_FROM_USER 41 select GENERIC_STRNLEN_USER 42 select MODULES_USE_ELF_RELA 43 select ODD_RT_SIGACTION 44 select OLD_SIGSUSPEND 45 select ARCH_HAS_SG_CHAIN 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 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 IOMMU_HELPER 90 bool 91 default y if SPARC64 92 93config STACKTRACE_SUPPORT 94 bool 95 default y if SPARC64 96 97config LOCKDEP_SUPPORT 98 bool 99 default y if SPARC64 100 101config HAVE_LATENCYTOP_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 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 uni- 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 uniprocessor machines. On a uniprocessor 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 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 229config SECCOMP 230 bool "Enable seccomp to safely compute untrusted bytecode" 231 depends on SPARC64 && PROC_FS 232 default y 233 help 234 This kernel feature is useful for number crunching applications 235 that may need to compute untrusted bytecode during their 236 execution. By using pipes or other transports made available to 237 the process as file descriptors supporting the read/write 238 syscalls, it's possible to isolate those applications in 239 their own address space using seccomp. Once seccomp is 240 enabled via /proc/<pid>/seccomp, it cannot be disabled 241 and the task is only allowed to execute a few safe syscalls 242 defined by each seccomp mode. 243 244 If unsure, say Y. Only embedded should say N here. 245 246config HOTPLUG_CPU 247 bool "Support for hot-pluggable CPUs" 248 depends on SPARC64 && SMP 249 help 250 Say Y here to experiment with turning CPUs off and on. CPUs 251 can be controlled through /sys/devices/system/cpu/cpu#. 252 Say N if you want to disable CPU hotplug. 253 254if SPARC64 255source "drivers/cpufreq/Kconfig" 256endif 257 258config US3_MC 259 tristate "UltraSPARC-III Memory Controller driver" 260 depends on SPARC64 261 default y 262 help 263 This adds a driver for the UltraSPARC-III memory controller. 264 Loading this driver allows exact mnemonic strings to be 265 printed in the event of a memory error, so that the faulty DIMM 266 on the motherboard can be matched to the error. 267 268 If in doubt, say Y, as this information can be very useful. 269 270# Global things across all Sun machines. 271config GENERIC_LOCKBREAK 272 bool 273 default y 274 depends on SPARC64 && SMP && PREEMPT 275 276config NUMA 277 bool "NUMA support" 278 depends on SPARC64 && SMP 279 280config NODES_SHIFT 281 int 282 default "4" 283 depends on NEED_MULTIPLE_NODES 284 285# Some NUMA nodes have memory ranges that span 286# other nodes. Even though a pfn is valid and 287# between a node's start and end pfns, it may not 288# reside on that node. See memmap_init_zone() 289# for details. 290config NODES_SPAN_OTHER_NODES 291 def_bool y 292 depends on NEED_MULTIPLE_NODES 293 294config ARCH_SELECT_MEMORY_MODEL 295 def_bool y if SPARC64 296 297config ARCH_SPARSEMEM_ENABLE 298 def_bool y if SPARC64 299 select SPARSEMEM_VMEMMAP_ENABLE 300 301config ARCH_SPARSEMEM_DEFAULT 302 def_bool y if SPARC64 303 304source "mm/Kconfig" 305 306if SPARC64 307source "kernel/power/Kconfig" 308endif 309 310config SCHED_SMT 311 bool "SMT (Hyperthreading) scheduler support" 312 depends on SPARC64 && SMP 313 default y 314 help 315 SMT scheduler support improves the CPU scheduler's decision making 316 when dealing with SPARC cpus at a cost of slightly increased overhead 317 in some places. If unsure say N here. 318 319config SCHED_MC 320 bool "Multi-core scheduler support" 321 depends on SPARC64 && SMP 322 default y 323 help 324 Multi-core scheduler support improves the CPU scheduler's decision 325 making when dealing with multi-core CPU chips at a cost of slightly 326 increased overhead in some places. If unsure say N here. 327 328source "kernel/Kconfig.preempt" 329 330config CMDLINE_BOOL 331 bool "Default bootloader kernel arguments" 332 depends on SPARC64 333 334config CMDLINE 335 string "Initial kernel command string" 336 depends on CMDLINE_BOOL 337 default "console=ttyS0,9600 root=/dev/sda1" 338 help 339 Say Y here if you want to be able to pass default arguments to 340 the kernel. This will be overridden by the bootloader, if you 341 use one (such as SILO). This is most useful if you want to boot 342 a kernel from TFTP, and want default options to be available 343 with having them passed on the command line. 344 345 NOTE: This option WILL override the PROM bootargs setting! 346 347config SUN_PM 348 bool 349 default y if SPARC32 350 help 351 Enable power management and CPU standby features on supported 352 SPARC platforms. 353 354config SPARC_LED 355 tristate "Sun4m LED driver" 356 depends on SPARC32 357 help 358 This driver toggles the front-panel LED on sun4m systems 359 in a user-specifiable manner. Its state can be probed 360 by reading /proc/led and its blinking mode can be changed 361 via writes to /proc/led 362 363config SERIAL_CONSOLE 364 bool 365 depends on SPARC32 366 default y 367 ---help--- 368 If you say Y here, it will be possible to use a serial port as the 369 system console (the system console is the device which receives all 370 kernel messages and warnings and which allows logins in single user 371 mode). This could be useful if some terminal or printer is connected 372 to that serial port. 373 374 Even if you say Y here, the currently visible virtual console 375 (/dev/tty0) will still be used as the system console by default, but 376 you can alter that using a kernel command line option such as 377 "console=ttyS1". (Try "man bootparam" or see the documentation of 378 your boot loader (silo) about how to pass options to the kernel at 379 boot time.) 380 381 If you don't have a graphics card installed and you say Y here, the 382 kernel will automatically use the first serial line, /dev/ttyS0, as 383 system console. 384 385 If unsure, say N. 386 387config SPARC_LEON 388 bool "Sparc Leon processor family" 389 depends on SPARC32 390 select USB_EHCI_BIG_ENDIAN_MMIO 391 select USB_EHCI_BIG_ENDIAN_DESC 392 ---help--- 393 If you say Y here if you are running on a SPARC-LEON processor. 394 The LEON processor is a synthesizable VHDL model of the 395 SPARC-v8 standard. LEON is part of the GRLIB collection of 396 IP cores that are distributed under GPL. GRLIB can be downloaded 397 from www.gaisler.com. You can download a sparc-linux cross-compilation 398 toolchain at www.gaisler.com. 399 400if SPARC_LEON 401menu "U-Boot options" 402 403config UBOOT_LOAD_ADDR 404 hex "uImage Load Address" 405 default 0x40004000 406 ---help--- 407 U-Boot kernel load address, the address in physical address space 408 where u-boot will place the Linux kernel before booting it. 409 This address is normally the base address of main memory + 0x4000. 410 411config UBOOT_FLASH_ADDR 412 hex "uImage.o Load Address" 413 default 0x00080000 414 ---help--- 415 Optional setting only affecting the uImage.o ELF-image used to 416 download the uImage file to the target using a ELF-loader other than 417 U-Boot. It may for example be used to download an uImage to FLASH with 418 the GRMON utility before even starting u-boot. 419 420config UBOOT_ENTRY_ADDR 421 hex "uImage Entry Address" 422 default 0xf0004000 423 ---help--- 424 Do not change this unless you know what you're doing. This is 425 hardcoded by the SPARC32 and LEON port. 426 427 This is the virtual address u-boot jumps to when booting the Linux 428 Kernel. 429 430endmenu 431endif 432 433endmenu 434 435menu "Bus options (PCI etc.)" 436config SBUS 437 bool 438 default y 439 440config SBUSCHAR 441 bool 442 default y 443 444config SUN_LDOMS 445 bool "Sun Logical Domains support" 446 depends on SPARC64 447 help 448 Say Y here is you want to support virtual devices via 449 Logical Domains. 450 451config PCI 452 bool "Support for PCI and PS/2 keyboard/mouse" 453 help 454 Find out whether your system includes a PCI bus. PCI is the name of 455 a bus system, i.e. the way the CPU talks to the other stuff inside 456 your box. If you say Y here, the kernel will include drivers and 457 infrastructure code to support PCI bus devices. 458 459 CONFIG_PCI is needed for all JavaStation's (including MrCoffee), 460 CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC. 461 All of these platforms are extremely obscure, so say N if unsure. 462 463config PCI_DOMAINS 464 def_bool PCI if SPARC64 465 466config PCI_SYSCALL 467 def_bool PCI 468 469config PCIC_PCI 470 bool 471 depends on PCI && SPARC32 && !SPARC_LEON 472 default y 473 474config LEON_PCI 475 bool 476 depends on PCI && SPARC_LEON 477 default y 478 479config SPARC_GRPCI1 480 bool "GRPCI Host Bridge Support" 481 depends on LEON_PCI 482 default y 483 help 484 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI 485 PCI host controller is typically found in GRLIB SPARC32/LEON 486 systems. The driver has one property (all_pci_errors) controlled 487 from the bootloader that makes the GRPCI to generate interrupts 488 on detected PCI Parity and System errors. 489 490config SPARC_GRPCI2 491 bool "GRPCI2 Host Bridge Support" 492 depends on LEON_PCI 493 default y 494 help 495 Say Y here to include the GRPCI2 Host Bridge Driver. 496 497source "drivers/pci/Kconfig" 498 499source "drivers/pcmcia/Kconfig" 500 501config SUN_OPENPROMFS 502 tristate "Openprom tree appears in /proc/openprom" 503 help 504 If you say Y, the OpenPROM device tree will be available as a 505 virtual file system, which you can mount to /proc/openprom by "mount 506 -t openpromfs none /proc/openprom". 507 508 To compile the /proc/openprom support as a module, choose M here: the 509 module will be called openpromfs. 510 511 Only choose N if you know in advance that you will not need to modify 512 OpenPROM settings on the running system. 513 514# Makefile helpers 515config SPARC64_PCI 516 bool 517 default y 518 depends on SPARC64 && PCI 519 520config SPARC64_PCI_MSI 521 bool 522 default y 523 depends on SPARC64_PCI && PCI_MSI 524 525endmenu 526 527menu "Executable file formats" 528 529source "fs/Kconfig.binfmt" 530 531config COMPAT 532 bool 533 depends on SPARC64 534 default y 535 select COMPAT_BINFMT_ELF 536 select HAVE_UID16 537 select ARCH_WANT_OLD_COMPAT_IPC 538 select COMPAT_OLD_SIGACTION 539 540config SYSVIPC_COMPAT 541 bool 542 depends on COMPAT && SYSVIPC 543 default y 544 545config KEYS_COMPAT 546 def_bool y if COMPAT && KEYS 547 548endmenu 549 550source "net/Kconfig" 551 552source "drivers/Kconfig" 553 554source "drivers/sbus/char/Kconfig" 555 556source "fs/Kconfig" 557 558source "arch/sparc/Kconfig.debug" 559 560source "security/Kconfig" 561 562source "crypto/Kconfig" 563 564source "lib/Kconfig" 565