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 RTC_SYSTOHC 29 select HAVE_DMA_ATTRS 30 select HAVE_DMA_API_DEBUG 31 select HAVE_ARCH_JUMP_LABEL if SPARC64 32 select GENERIC_IRQ_SHOW 33 select ARCH_WANT_IPC_PARSE_VERSION 34 select GENERIC_PCI_IOMAP 35 select HAVE_NMI_WATCHDOG if SPARC64 36 select HAVE_BPF_JIT 37 select HAVE_DEBUG_BUGVERBOSE 38 select GENERIC_SMP_IDLE_THREAD 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 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 HAVE_LATENCYTOP_SUPPORT 105 bool 106 default y if SPARC64 107 108config ARCH_HIBERNATION_POSSIBLE 109 def_bool y if SPARC64 110 111config AUDIT_ARCH 112 bool 113 default y 114 115config HAVE_SETUP_PER_CPU_AREA 116 def_bool y if SPARC64 117 118config NEED_PER_CPU_EMBED_FIRST_CHUNK 119 def_bool y if SPARC64 120 121config NEED_PER_CPU_PAGE_FIRST_CHUNK 122 def_bool y if SPARC64 123 124config MMU 125 bool 126 default y 127 128config HIGHMEM 129 bool 130 default y if SPARC32 131 132config ZONE_DMA 133 bool 134 default y if SPARC32 135 136config NEED_DMA_MAP_STATE 137 def_bool y 138 139config NEED_SG_DMA_LENGTH 140 def_bool y 141 142config GENERIC_ISA_DMA 143 bool 144 default y if SPARC32 145 146config ARCH_SUPPORTS_DEBUG_PAGEALLOC 147 def_bool y if SPARC64 148 149config PGTABLE_LEVELS 150 default 4 if 64BIT 151 default 3 152 153source "init/Kconfig" 154 155source "kernel/Kconfig.freezer" 156 157menu "Processor type and features" 158 159config SMP 160 bool "Symmetric multi-processing support" 161 ---help--- 162 This enables support for systems with more than one CPU. If you have 163 a system with only one CPU, say N. If you have a system with more 164 than one CPU, say Y. 165 166 If you say N here, the kernel will run on uni- and multiprocessor 167 machines, but will use only one CPU of a multiprocessor machine. If 168 you say Y here, the kernel will run on many, but not all, 169 uniprocessor machines. On a uniprocessor machine, the kernel 170 will run faster if you say N here. 171 172 People using multiprocessor machines who say Y here should also say 173 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power 174 Management" code will be disabled if you say Y here. 175 176 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO 177 available at <http://www.tldp.org/docs.html#howto>. 178 179 If you don't know what to do here, say N. 180 181config NR_CPUS 182 int "Maximum number of CPUs" 183 depends on SMP 184 range 2 32 if SPARC32 185 range 2 1024 if SPARC64 186 default 32 if SPARC32 187 default 64 if SPARC64 188 189source kernel/Kconfig.hz 190 191config RWSEM_GENERIC_SPINLOCK 192 bool 193 default y if SPARC32 194 195config RWSEM_XCHGADD_ALGORITHM 196 bool 197 default y if SPARC64 198 199config GENERIC_HWEIGHT 200 bool 201 default y 202 203config GENERIC_CALIBRATE_DELAY 204 bool 205 default y 206 207config ARCH_MAY_HAVE_PC_FDC 208 bool 209 default y 210 211config EMULATED_CMPXCHG 212 bool 213 default y if SPARC32 214 help 215 Sparc32 does not have a CAS instruction like sparc64. cmpxchg() 216 is emulated, and therefore it is not completely atomic. 217 218# Makefile helpers 219config SPARC32_SMP 220 bool 221 default y 222 depends on SPARC32 && SMP 223 224config SPARC64_SMP 225 bool 226 default y 227 depends on SPARC64 && SMP 228 229config EARLYFB 230 bool "Support for early boot text console" 231 default y 232 depends on SPARC64 233 help 234 Say Y here to enable a faster early framebuffer boot console. 235 236config SECCOMP 237 bool "Enable seccomp to safely compute untrusted bytecode" 238 depends on SPARC64 && PROC_FS 239 default y 240 help 241 This kernel feature is useful for number crunching applications 242 that may need to compute untrusted bytecode during their 243 execution. By using pipes or other transports made available to 244 the process as file descriptors supporting the read/write 245 syscalls, it's possible to isolate those applications in 246 their own address space using seccomp. Once seccomp is 247 enabled via /proc/<pid>/seccomp, it cannot be disabled 248 and the task is only allowed to execute a few safe syscalls 249 defined by each seccomp mode. 250 251 If unsure, say Y. Only embedded should say N here. 252 253config HOTPLUG_CPU 254 bool "Support for hot-pluggable CPUs" 255 depends on SPARC64 && SMP 256 help 257 Say Y here to experiment with turning CPUs off and on. CPUs 258 can be controlled through /sys/devices/system/cpu/cpu#. 259 Say N if you want to disable CPU hotplug. 260 261if SPARC64 262source "drivers/cpufreq/Kconfig" 263endif 264 265config US3_MC 266 tristate "UltraSPARC-III Memory Controller driver" 267 depends on SPARC64 268 default y 269 help 270 This adds a driver for the UltraSPARC-III memory controller. 271 Loading this driver allows exact mnemonic strings to be 272 printed in the event of a memory error, so that the faulty DIMM 273 on the motherboard can be matched to the error. 274 275 If in doubt, say Y, as this information can be very useful. 276 277# Global things across all Sun machines. 278config GENERIC_LOCKBREAK 279 bool 280 default y 281 depends on SPARC64 && SMP && PREEMPT 282 283config NUMA 284 bool "NUMA support" 285 depends on SPARC64 && SMP 286 287config NODES_SHIFT 288 int 289 default "4" 290 depends on NEED_MULTIPLE_NODES 291 292# Some NUMA nodes have memory ranges that span 293# other nodes. Even though a pfn is valid and 294# between a node's start and end pfns, it may not 295# reside on that node. See memmap_init_zone() 296# for details. 297config NODES_SPAN_OTHER_NODES 298 def_bool y 299 depends on NEED_MULTIPLE_NODES 300 301config ARCH_SELECT_MEMORY_MODEL 302 def_bool y if SPARC64 303 304config ARCH_SPARSEMEM_ENABLE 305 def_bool y if SPARC64 306 select SPARSEMEM_VMEMMAP_ENABLE 307 308config ARCH_SPARSEMEM_DEFAULT 309 def_bool y if SPARC64 310 311source "mm/Kconfig" 312 313if SPARC64 314source "kernel/power/Kconfig" 315endif 316 317config SCHED_SMT 318 bool "SMT (Hyperthreading) scheduler support" 319 depends on SPARC64 && SMP 320 default y 321 help 322 SMT scheduler support improves the CPU scheduler's decision making 323 when dealing with SPARC cpus at a cost of slightly increased overhead 324 in some places. If unsure say N here. 325 326config SCHED_MC 327 bool "Multi-core scheduler support" 328 depends on SPARC64 && SMP 329 default y 330 help 331 Multi-core scheduler support improves the CPU scheduler's decision 332 making when dealing with multi-core CPU chips at a cost of slightly 333 increased overhead in some places. If unsure say N here. 334 335source "kernel/Kconfig.preempt" 336 337config CMDLINE_BOOL 338 bool "Default bootloader kernel arguments" 339 depends on SPARC64 340 341config CMDLINE 342 string "Initial kernel command string" 343 depends on CMDLINE_BOOL 344 default "console=ttyS0,9600 root=/dev/sda1" 345 help 346 Say Y here if you want to be able to pass default arguments to 347 the kernel. This will be overridden by the bootloader, if you 348 use one (such as SILO). This is most useful if you want to boot 349 a kernel from TFTP, and want default options to be available 350 with having them passed on the command line. 351 352 NOTE: This option WILL override the PROM bootargs setting! 353 354config SUN_PM 355 bool 356 default y if SPARC32 357 help 358 Enable power management and CPU standby features on supported 359 SPARC platforms. 360 361config SPARC_LED 362 tristate "Sun4m LED driver" 363 depends on SPARC32 364 help 365 This driver toggles the front-panel LED on sun4m systems 366 in a user-specifiable manner. Its state can be probed 367 by reading /proc/led and its blinking mode can be changed 368 via writes to /proc/led 369 370config SERIAL_CONSOLE 371 bool 372 depends on SPARC32 373 default y 374 ---help--- 375 If you say Y here, it will be possible to use a serial port as the 376 system console (the system console is the device which receives all 377 kernel messages and warnings and which allows logins in single user 378 mode). This could be useful if some terminal or printer is connected 379 to that serial port. 380 381 Even if you say Y here, the currently visible virtual console 382 (/dev/tty0) will still be used as the system console by default, but 383 you can alter that using a kernel command line option such as 384 "console=ttyS1". (Try "man bootparam" or see the documentation of 385 your boot loader (silo) about how to pass options to the kernel at 386 boot time.) 387 388 If you don't have a graphics card installed and you say Y here, the 389 kernel will automatically use the first serial line, /dev/ttyS0, as 390 system console. 391 392 If unsure, say N. 393 394config SPARC_LEON 395 bool "Sparc Leon processor family" 396 depends on SPARC32 397 select USB_EHCI_BIG_ENDIAN_MMIO 398 select USB_EHCI_BIG_ENDIAN_DESC 399 ---help--- 400 If you say Y here if you are running on a SPARC-LEON processor. 401 The LEON processor is a synthesizable VHDL model of the 402 SPARC-v8 standard. LEON is part of the GRLIB collection of 403 IP cores that are distributed under GPL. GRLIB can be downloaded 404 from www.gaisler.com. You can download a sparc-linux cross-compilation 405 toolchain at www.gaisler.com. 406 407if SPARC_LEON 408menu "U-Boot options" 409 410config UBOOT_LOAD_ADDR 411 hex "uImage Load Address" 412 default 0x40004000 413 ---help--- 414 U-Boot kernel load address, the address in physical address space 415 where u-boot will place the Linux kernel before booting it. 416 This address is normally the base address of main memory + 0x4000. 417 418config UBOOT_FLASH_ADDR 419 hex "uImage.o Load Address" 420 default 0x00080000 421 ---help--- 422 Optional setting only affecting the uImage.o ELF-image used to 423 download the uImage file to the target using a ELF-loader other than 424 U-Boot. It may for example be used to download an uImage to FLASH with 425 the GRMON utility before even starting u-boot. 426 427config UBOOT_ENTRY_ADDR 428 hex "uImage Entry Address" 429 default 0xf0004000 430 ---help--- 431 Do not change this unless you know what you're doing. This is 432 hardcoded by the SPARC32 and LEON port. 433 434 This is the virtual address u-boot jumps to when booting the Linux 435 Kernel. 436 437endmenu 438endif 439 440endmenu 441 442menu "Bus options (PCI etc.)" 443config SBUS 444 bool 445 default y 446 447config SBUSCHAR 448 bool 449 default y 450 451config SUN_LDOMS 452 bool "Sun Logical Domains support" 453 depends on SPARC64 454 help 455 Say Y here is you want to support virtual devices via 456 Logical Domains. 457 458config PCI 459 bool "Support for PCI and PS/2 keyboard/mouse" 460 help 461 Find out whether your system includes a PCI bus. PCI is the name of 462 a bus system, i.e. the way the CPU talks to the other stuff inside 463 your box. If you say Y here, the kernel will include drivers and 464 infrastructure code to support PCI bus devices. 465 466 CONFIG_PCI is needed for all JavaStation's (including MrCoffee), 467 CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC. 468 All of these platforms are extremely obscure, so say N if unsure. 469 470config PCI_DOMAINS 471 def_bool PCI if SPARC64 472 473config PCI_SYSCALL 474 def_bool PCI 475 476config PCIC_PCI 477 bool 478 depends on PCI && SPARC32 && !SPARC_LEON 479 default y 480 481config LEON_PCI 482 bool 483 depends on PCI && SPARC_LEON 484 default y 485 486config SPARC_GRPCI1 487 bool "GRPCI Host Bridge Support" 488 depends on LEON_PCI 489 default y 490 help 491 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI 492 PCI host controller is typically found in GRLIB SPARC32/LEON 493 systems. The driver has one property (all_pci_errors) controlled 494 from the bootloader that makes the GRPCI to generate interrupts 495 on detected PCI Parity and System errors. 496 497config SPARC_GRPCI2 498 bool "GRPCI2 Host Bridge Support" 499 depends on LEON_PCI 500 default y 501 help 502 Say Y here to include the GRPCI2 Host Bridge Driver. 503 504source "drivers/pci/Kconfig" 505 506source "drivers/pcmcia/Kconfig" 507 508config SUN_OPENPROMFS 509 tristate "Openprom tree appears in /proc/openprom" 510 help 511 If you say Y, the OpenPROM device tree will be available as a 512 virtual file system, which you can mount to /proc/openprom by "mount 513 -t openpromfs none /proc/openprom". 514 515 To compile the /proc/openprom support as a module, choose M here: the 516 module will be called openpromfs. 517 518 Only choose N if you know in advance that you will not need to modify 519 OpenPROM settings on the running system. 520 521# Makefile helpers 522config SPARC64_PCI 523 bool 524 default y 525 depends on SPARC64 && PCI 526 527config SPARC64_PCI_MSI 528 bool 529 default y 530 depends on SPARC64_PCI && PCI_MSI 531 532endmenu 533 534menu "Executable file formats" 535 536source "fs/Kconfig.binfmt" 537 538config COMPAT 539 bool 540 depends on SPARC64 541 default y 542 select COMPAT_BINFMT_ELF 543 select HAVE_UID16 544 select ARCH_WANT_OLD_COMPAT_IPC 545 select COMPAT_OLD_SIGACTION 546 547config SYSVIPC_COMPAT 548 bool 549 depends on COMPAT && SYSVIPC 550 default y 551 552config KEYS_COMPAT 553 def_bool y if COMPAT && KEYS 554 555endmenu 556 557source "net/Kconfig" 558 559source "drivers/Kconfig" 560 561source "drivers/sbus/char/Kconfig" 562 563source "fs/Kconfig" 564 565source "arch/sparc/Kconfig.debug" 566 567source "security/Kconfig" 568 569source "crypto/Kconfig" 570 571source "lib/Kconfig" 572