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 select PROVE_LOCKING_SMALL if PROVE_LOCKING 47 48config SPARC32 49 def_bool !64BIT 50 select GENERIC_ATOMIC64 51 select CLZ_TAB 52 select HAVE_UID16 53 select OLD_SIGACTION 54 55config SPARC64 56 def_bool 64BIT 57 select HAVE_FUNCTION_TRACER 58 select HAVE_FUNCTION_GRAPH_TRACER 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 ARCH_ATU 94 bool 95 default y if SPARC64 96 97config ARCH_DMA_ADDR_T_64BIT 98 bool 99 default y if ARCH_ATU 100 101config IOMMU_HELPER 102 bool 103 default y if SPARC64 104 105config STACKTRACE_SUPPORT 106 bool 107 default y if SPARC64 108 109config LOCKDEP_SUPPORT 110 bool 111 default y if SPARC64 112 113config ARCH_HIBERNATION_POSSIBLE 114 def_bool y if SPARC64 115 116config AUDIT_ARCH 117 bool 118 default y 119 120config HAVE_SETUP_PER_CPU_AREA 121 def_bool y if SPARC64 122 123config NEED_PER_CPU_EMBED_FIRST_CHUNK 124 def_bool y if SPARC64 125 126config NEED_PER_CPU_PAGE_FIRST_CHUNK 127 def_bool y if SPARC64 128 129config MMU 130 bool 131 default y 132 133config HIGHMEM 134 bool 135 default y if SPARC32 136 137config ZONE_DMA 138 bool 139 default y if SPARC32 140 141config NEED_DMA_MAP_STATE 142 def_bool y 143 144config NEED_SG_DMA_LENGTH 145 def_bool y 146 147config GENERIC_ISA_DMA 148 bool 149 default y if SPARC32 150 151config ARCH_SUPPORTS_DEBUG_PAGEALLOC 152 def_bool y if SPARC64 153 154config PGTABLE_LEVELS 155 default 4 if 64BIT 156 default 3 157 158source "init/Kconfig" 159 160source "kernel/Kconfig.freezer" 161 162menu "Processor type and features" 163 164config SMP 165 bool "Symmetric multi-processing support" 166 ---help--- 167 This enables support for systems with more than one CPU. If you have 168 a system with only one CPU, say N. If you have a system with more 169 than one CPU, say Y. 170 171 If you say N here, the kernel will run on uni- and multiprocessor 172 machines, but will use only one CPU of a multiprocessor machine. If 173 you say Y here, the kernel will run on many, but not all, 174 uniprocessor machines. On a uniprocessor machine, the kernel 175 will run faster if you say N here. 176 177 People using multiprocessor machines who say Y here should also say 178 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power 179 Management" code will be disabled if you say Y here. 180 181 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO 182 available at <http://www.tldp.org/docs.html#howto>. 183 184 If you don't know what to do here, say N. 185 186config NR_CPUS 187 int "Maximum number of CPUs" 188 depends on SMP 189 range 2 32 if SPARC32 190 range 2 1024 if SPARC64 191 default 32 if SPARC32 192 default 64 if SPARC64 193 194source kernel/Kconfig.hz 195 196config RWSEM_GENERIC_SPINLOCK 197 bool 198 default y if SPARC32 199 200config RWSEM_XCHGADD_ALGORITHM 201 bool 202 default y if SPARC64 203 204config GENERIC_HWEIGHT 205 bool 206 default y 207 208config GENERIC_CALIBRATE_DELAY 209 bool 210 default y 211 212config ARCH_MAY_HAVE_PC_FDC 213 bool 214 default y 215 216config EMULATED_CMPXCHG 217 bool 218 default y if SPARC32 219 help 220 Sparc32 does not have a CAS instruction like sparc64. cmpxchg() 221 is emulated, and therefore it is not completely atomic. 222 223# Makefile helpers 224config SPARC32_SMP 225 bool 226 default y 227 depends on SPARC32 && SMP 228 229config SPARC64_SMP 230 bool 231 default y 232 depends on SPARC64 && SMP 233 234config EARLYFB 235 bool "Support for early boot text console" 236 default y 237 depends on SPARC64 238 help 239 Say Y here to enable a faster early framebuffer boot console. 240 241config SECCOMP 242 bool "Enable seccomp to safely compute untrusted bytecode" 243 depends on SPARC64 && PROC_FS 244 default y 245 help 246 This kernel feature is useful for number crunching applications 247 that may need to compute untrusted bytecode during their 248 execution. By using pipes or other transports made available to 249 the process as file descriptors supporting the read/write 250 syscalls, it's possible to isolate those applications in 251 their own address space using seccomp. Once seccomp is 252 enabled via /proc/<pid>/seccomp, it cannot be disabled 253 and the task is only allowed to execute a few safe syscalls 254 defined by each seccomp mode. 255 256 If unsure, say Y. Only embedded should say N here. 257 258config HOTPLUG_CPU 259 bool "Support for hot-pluggable CPUs" 260 depends on SPARC64 && SMP 261 help 262 Say Y here to experiment with turning CPUs off and on. CPUs 263 can be controlled through /sys/devices/system/cpu/cpu#. 264 Say N if you want to disable CPU hotplug. 265 266if SPARC64 267source "drivers/cpufreq/Kconfig" 268endif 269 270config US3_MC 271 tristate "UltraSPARC-III Memory Controller driver" 272 depends on SPARC64 273 default y 274 help 275 This adds a driver for the UltraSPARC-III memory controller. 276 Loading this driver allows exact mnemonic strings to be 277 printed in the event of a memory error, so that the faulty DIMM 278 on the motherboard can be matched to the error. 279 280 If in doubt, say Y, as this information can be very useful. 281 282# Global things across all Sun machines. 283config GENERIC_LOCKBREAK 284 bool 285 default y 286 depends on SPARC64 && SMP && PREEMPT 287 288config NUMA 289 bool "NUMA support" 290 depends on SPARC64 && SMP 291 292config NODES_SHIFT 293 int 294 default "4" 295 depends on NEED_MULTIPLE_NODES 296 297# Some NUMA nodes have memory ranges that span 298# other nodes. Even though a pfn is valid and 299# between a node's start and end pfns, it may not 300# reside on that node. See memmap_init_zone() 301# for details. 302config NODES_SPAN_OTHER_NODES 303 def_bool y 304 depends on NEED_MULTIPLE_NODES 305 306config ARCH_SELECT_MEMORY_MODEL 307 def_bool y if SPARC64 308 309config ARCH_SPARSEMEM_ENABLE 310 def_bool y if SPARC64 311 select SPARSEMEM_VMEMMAP_ENABLE 312 313config ARCH_SPARSEMEM_DEFAULT 314 def_bool y if SPARC64 315 316config FORCE_MAX_ZONEORDER 317 int "Maximum zone order" 318 default "13" 319 help 320 The kernel memory allocator divides physically contiguous memory 321 blocks into "zones", where each zone is a power of two number of 322 pages. This option selects the largest power of two that the kernel 323 keeps in the memory allocator. If you need to allocate very large 324 blocks of physically contiguous memory, then you may need to 325 increase this value. 326 327 This config option is actually maximum order plus one. For example, 328 a value of 13 means that the largest free memory block is 2^12 pages. 329 330source "mm/Kconfig" 331 332if SPARC64 333source "kernel/power/Kconfig" 334endif 335 336config SCHED_SMT 337 bool "SMT (Hyperthreading) scheduler support" 338 depends on SPARC64 && SMP 339 default y 340 help 341 SMT scheduler support improves the CPU scheduler's decision making 342 when dealing with SPARC cpus at a cost of slightly increased overhead 343 in some places. If unsure say N here. 344 345config SCHED_MC 346 bool "Multi-core scheduler support" 347 depends on SPARC64 && SMP 348 default y 349 help 350 Multi-core scheduler support improves the CPU scheduler's decision 351 making when dealing with multi-core CPU chips at a cost of slightly 352 increased overhead in some places. If unsure say N here. 353 354source "kernel/Kconfig.preempt" 355 356config CMDLINE_BOOL 357 bool "Default bootloader kernel arguments" 358 depends on SPARC64 359 360config CMDLINE 361 string "Initial kernel command string" 362 depends on CMDLINE_BOOL 363 default "console=ttyS0,9600 root=/dev/sda1" 364 help 365 Say Y here if you want to be able to pass default arguments to 366 the kernel. This will be overridden by the bootloader, if you 367 use one (such as SILO). This is most useful if you want to boot 368 a kernel from TFTP, and want default options to be available 369 with having them passed on the command line. 370 371 NOTE: This option WILL override the PROM bootargs setting! 372 373config SUN_PM 374 bool 375 default y if SPARC32 376 help 377 Enable power management and CPU standby features on supported 378 SPARC platforms. 379 380config SPARC_LED 381 tristate "Sun4m LED driver" 382 depends on SPARC32 383 help 384 This driver toggles the front-panel LED on sun4m systems 385 in a user-specifiable manner. Its state can be probed 386 by reading /proc/led and its blinking mode can be changed 387 via writes to /proc/led 388 389config SERIAL_CONSOLE 390 bool 391 depends on SPARC32 392 default y 393 ---help--- 394 If you say Y here, it will be possible to use a serial port as the 395 system console (the system console is the device which receives all 396 kernel messages and warnings and which allows logins in single user 397 mode). This could be useful if some terminal or printer is connected 398 to that serial port. 399 400 Even if you say Y here, the currently visible virtual console 401 (/dev/tty0) will still be used as the system console by default, but 402 you can alter that using a kernel command line option such as 403 "console=ttyS1". (Try "man bootparam" or see the documentation of 404 your boot loader (silo) about how to pass options to the kernel at 405 boot time.) 406 407 If you don't have a graphics card installed and you say Y here, the 408 kernel will automatically use the first serial line, /dev/ttyS0, as 409 system console. 410 411 If unsure, say N. 412 413config SPARC_LEON 414 bool "Sparc Leon processor family" 415 depends on SPARC32 416 select USB_EHCI_BIG_ENDIAN_MMIO 417 select USB_EHCI_BIG_ENDIAN_DESC 418 ---help--- 419 If you say Y here if you are running on a SPARC-LEON processor. 420 The LEON processor is a synthesizable VHDL model of the 421 SPARC-v8 standard. LEON is part of the GRLIB collection of 422 IP cores that are distributed under GPL. GRLIB can be downloaded 423 from www.gaisler.com. You can download a sparc-linux cross-compilation 424 toolchain at www.gaisler.com. 425 426if SPARC_LEON 427menu "U-Boot options" 428 429config UBOOT_LOAD_ADDR 430 hex "uImage Load Address" 431 default 0x40004000 432 ---help--- 433 U-Boot kernel load address, the address in physical address space 434 where u-boot will place the Linux kernel before booting it. 435 This address is normally the base address of main memory + 0x4000. 436 437config UBOOT_FLASH_ADDR 438 hex "uImage.o Load Address" 439 default 0x00080000 440 ---help--- 441 Optional setting only affecting the uImage.o ELF-image used to 442 download the uImage file to the target using a ELF-loader other than 443 U-Boot. It may for example be used to download an uImage to FLASH with 444 the GRMON utility before even starting u-boot. 445 446config UBOOT_ENTRY_ADDR 447 hex "uImage Entry Address" 448 default 0xf0004000 449 ---help--- 450 Do not change this unless you know what you're doing. This is 451 hardcoded by the SPARC32 and LEON port. 452 453 This is the virtual address u-boot jumps to when booting the Linux 454 Kernel. 455 456endmenu 457endif 458 459endmenu 460 461menu "Bus options (PCI etc.)" 462config SBUS 463 bool 464 default y 465 466config SBUSCHAR 467 bool 468 default y 469 470config SUN_LDOMS 471 bool "Sun Logical Domains support" 472 depends on SPARC64 473 help 474 Say Y here is you want to support virtual devices via 475 Logical Domains. 476 477config PCI 478 bool "Support for PCI and PS/2 keyboard/mouse" 479 help 480 Find out whether your system includes a PCI bus. PCI is the name of 481 a bus system, i.e. the way the CPU talks to the other stuff inside 482 your box. If you say Y here, the kernel will include drivers and 483 infrastructure code to support PCI bus devices. 484 485 CONFIG_PCI is needed for all JavaStation's (including MrCoffee), 486 CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC. 487 All of these platforms are extremely obscure, so say N if unsure. 488 489config PCI_DOMAINS 490 def_bool PCI if SPARC64 491 492config PCI_SYSCALL 493 def_bool PCI 494 495config PCIC_PCI 496 bool 497 depends on PCI && SPARC32 && !SPARC_LEON 498 default y 499 500config LEON_PCI 501 bool 502 depends on PCI && SPARC_LEON 503 default y 504 505config SPARC_GRPCI1 506 bool "GRPCI Host Bridge Support" 507 depends on LEON_PCI 508 default y 509 help 510 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI 511 PCI host controller is typically found in GRLIB SPARC32/LEON 512 systems. The driver has one property (all_pci_errors) controlled 513 from the bootloader that makes the GRPCI to generate interrupts 514 on detected PCI Parity and System errors. 515 516config SPARC_GRPCI2 517 bool "GRPCI2 Host Bridge Support" 518 depends on LEON_PCI 519 default y 520 help 521 Say Y here to include the GRPCI2 Host Bridge Driver. 522 523source "drivers/pci/Kconfig" 524 525source "drivers/pcmcia/Kconfig" 526 527config SUN_OPENPROMFS 528 tristate "Openprom tree appears in /proc/openprom" 529 help 530 If you say Y, the OpenPROM device tree will be available as a 531 virtual file system, which you can mount to /proc/openprom by "mount 532 -t openpromfs none /proc/openprom". 533 534 To compile the /proc/openprom support as a module, choose M here: the 535 module will be called openpromfs. 536 537 Only choose N if you know in advance that you will not need to modify 538 OpenPROM settings on the running system. 539 540# Makefile helpers 541config SPARC64_PCI 542 bool 543 default y 544 depends on SPARC64 && PCI 545 546config SPARC64_PCI_MSI 547 bool 548 default y 549 depends on SPARC64_PCI && PCI_MSI 550 551endmenu 552 553menu "Executable file formats" 554 555source "fs/Kconfig.binfmt" 556 557config COMPAT 558 bool 559 depends on SPARC64 560 default y 561 select COMPAT_BINFMT_ELF 562 select HAVE_UID16 563 select ARCH_WANT_OLD_COMPAT_IPC 564 select COMPAT_OLD_SIGACTION 565 566config SYSVIPC_COMPAT 567 bool 568 depends on COMPAT && SYSVIPC 569 default y 570 571config KEYS_COMPAT 572 def_bool y if COMPAT && KEYS 573 574endmenu 575 576source "net/Kconfig" 577 578source "drivers/Kconfig" 579 580source "drivers/sbus/char/Kconfig" 581 582source "fs/Kconfig" 583 584source "arch/sparc/Kconfig.debug" 585 586source "security/Kconfig" 587 588source "crypto/Kconfig" 589 590source "lib/Kconfig" 591