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 OF 16 select OF_PROMTREE 17 select HAVE_IDE 18 select HAVE_OPROFILE 19 select HAVE_ARCH_KGDB if !SMP || SPARC64 20 select HAVE_ARCH_TRACEHOOK 21 select SYSCTL_EXCEPTION_TRACE 22 select ARCH_WANT_OPTIONAL_GPIOLIB 23 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE 24 select RTC_CLASS 25 select RTC_DRV_M48T59 26 select HAVE_IRQ_WORK 27 select HAVE_DMA_ATTRS 28 select HAVE_DMA_API_DEBUG 29 select HAVE_ARCH_JUMP_LABEL 30 select HAVE_GENERIC_HARDIRQS 31 select GENERIC_IRQ_SHOW 32 select ARCH_WANT_IPC_PARSE_VERSION 33 select USE_GENERIC_SMP_HELPERS if SMP 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_CMOS_UPDATE 40 select GENERIC_CLOCKEVENTS 41 select GENERIC_STRNCPY_FROM_USER 42 select GENERIC_STRNLEN_USER 43 select MODULES_USE_ELF_RELA 44 45config SPARC32 46 def_bool !64BIT 47 select GENERIC_ATOMIC64 48 select CLZ_TAB 49 select HAVE_UID16 50 51config SPARC64 52 def_bool 64BIT 53 select ARCH_SUPPORTS_MSI 54 select HAVE_FUNCTION_TRACER 55 select HAVE_FUNCTION_GRAPH_TRACER 56 select HAVE_FUNCTION_GRAPH_FP_TEST 57 select HAVE_FUNCTION_TRACE_MCOUNT_TEST 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_SYSCALL_WRAPPERS 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_DEBUG_KMEMLEAK 69 select RTC_DRV_CMOS 70 select RTC_DRV_BQ4802 71 select RTC_DRV_SUN4V 72 select RTC_DRV_STARFIRE 73 select HAVE_PERF_EVENTS 74 select PERF_USE_VMALLOC 75 select IRQ_PREFLOW_FASTEOI 76 select ARCH_HAVE_NMI_SAFE_CMPXCHG 77 select HAVE_C_RECORDMCOUNT 78 select NO_BOOTMEM 79 80config ARCH_DEFCONFIG 81 string 82 default "arch/sparc/configs/sparc32_defconfig" if SPARC32 83 default "arch/sparc/configs/sparc64_defconfig" if SPARC64 84 85# CONFIG_BITS can be used at source level to get 32/64 bits 86config BITS 87 int 88 default 32 if SPARC32 89 default 64 if SPARC64 90 91config IOMMU_HELPER 92 bool 93 default y if SPARC64 94 95config STACKTRACE_SUPPORT 96 bool 97 default y if SPARC64 98 99config LOCKDEP_SUPPORT 100 bool 101 default y if SPARC64 102 103config HAVE_LATENCYTOP_SUPPORT 104 bool 105 default 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 GENERIC_GPIO 143 bool 144 help 145 Generic GPIO API support 146 147config ARCH_NO_VIRT_TO_BUS 148 def_bool y 149 150config ARCH_SUPPORTS_DEBUG_PAGEALLOC 151 def_bool y if SPARC64 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 single 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 singleprocessor machines. On a singleprocessor 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 if !ULTRA_HAS_POPULATION_COUNT 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 select HOTPLUG 257 help 258 Say Y here to experiment with turning CPUs off and on. CPUs 259 can be controlled through /sys/devices/system/cpu/cpu#. 260 Say N if you want to disable CPU hotplug. 261 262if SPARC64 263source "drivers/cpufreq/Kconfig" 264 265config US3_FREQ 266 tristate "UltraSPARC-III CPU Frequency driver" 267 depends on CPU_FREQ 268 select CPU_FREQ_TABLE 269 help 270 This adds the CPUFreq driver for UltraSPARC-III processors. 271 272 For details, take a look at <file:Documentation/cpu-freq>. 273 274 If in doubt, say N. 275 276config US2E_FREQ 277 tristate "UltraSPARC-IIe CPU Frequency driver" 278 depends on CPU_FREQ 279 select CPU_FREQ_TABLE 280 help 281 This adds the CPUFreq driver for UltraSPARC-IIe processors. 282 283 For details, take a look at <file:Documentation/cpu-freq>. 284 285 If in doubt, say N. 286 287endif 288 289config US3_MC 290 tristate "UltraSPARC-III Memory Controller driver" 291 depends on SPARC64 292 default y 293 help 294 This adds a driver for the UltraSPARC-III memory controller. 295 Loading this driver allows exact mnemonic strings to be 296 printed in the event of a memory error, so that the faulty DIMM 297 on the motherboard can be matched to the error. 298 299 If in doubt, say Y, as this information can be very useful. 300 301# Global things across all Sun machines. 302config GENERIC_LOCKBREAK 303 bool 304 default y 305 depends on SPARC64 && SMP && PREEMPT 306 307config NUMA 308 bool "NUMA support" 309 depends on SPARC64 && SMP 310 311config NODES_SHIFT 312 int 313 default "4" 314 depends on NEED_MULTIPLE_NODES 315 316# Some NUMA nodes have memory ranges that span 317# other nodes. Even though a pfn is valid and 318# between a node's start and end pfns, it may not 319# reside on that node. See memmap_init_zone() 320# for details. 321config NODES_SPAN_OTHER_NODES 322 def_bool y 323 depends on NEED_MULTIPLE_NODES 324 325config ARCH_SELECT_MEMORY_MODEL 326 def_bool y if SPARC64 327 328config ARCH_SPARSEMEM_ENABLE 329 def_bool y if SPARC64 330 select SPARSEMEM_VMEMMAP_ENABLE 331 332config ARCH_SPARSEMEM_DEFAULT 333 def_bool y if SPARC64 334 335source "mm/Kconfig" 336 337config SCHED_SMT 338 bool "SMT (Hyperthreading) scheduler support" 339 depends on SPARC64 && SMP 340 default y 341 help 342 SMT scheduler support improves the CPU scheduler's decision making 343 when dealing with SPARC cpus at a cost of slightly increased overhead 344 in some places. If unsure say N here. 345 346config SCHED_MC 347 bool "Multi-core scheduler support" 348 depends on SPARC64 && SMP 349 default y 350 help 351 Multi-core scheduler support improves the CPU scheduler's decision 352 making when dealing with multi-core CPU chips at a cost of slightly 353 increased overhead in some places. If unsure say N here. 354 355source "kernel/Kconfig.preempt" 356 357config CMDLINE_BOOL 358 bool "Default bootloader kernel arguments" 359 depends on SPARC64 360 361config CMDLINE 362 string "Initial kernel command string" 363 depends on CMDLINE_BOOL 364 default "console=ttyS0,9600 root=/dev/sda1" 365 help 366 Say Y here if you want to be able to pass default arguments to 367 the kernel. This will be overridden by the bootloader, if you 368 use one (such as SILO). This is most useful if you want to boot 369 a kernel from TFTP, and want default options to be available 370 with having them passed on the command line. 371 372 NOTE: This option WILL override the PROM bootargs setting! 373 374config SUN_PM 375 bool 376 default y if SPARC32 377 help 378 Enable power management and CPU standby features on supported 379 SPARC platforms. 380 381config SPARC_LED 382 tristate "Sun4m LED driver" 383 depends on SPARC32 384 help 385 This driver toggles the front-panel LED on sun4m systems 386 in a user-specifiable manner. Its state can be probed 387 by reading /proc/led and its blinking mode can be changed 388 via writes to /proc/led 389 390config SERIAL_CONSOLE 391 bool 392 depends on SPARC32 393 default y 394 ---help--- 395 If you say Y here, it will be possible to use a serial port as the 396 system console (the system console is the device which receives all 397 kernel messages and warnings and which allows logins in single user 398 mode). This could be useful if some terminal or printer is connected 399 to that serial port. 400 401 Even if you say Y here, the currently visible virtual console 402 (/dev/tty0) will still be used as the system console by default, but 403 you can alter that using a kernel command line option such as 404 "console=ttyS1". (Try "man bootparam" or see the documentation of 405 your boot loader (silo) about how to pass options to the kernel at 406 boot time.) 407 408 If you don't have a graphics card installed and you say Y here, the 409 kernel will automatically use the first serial line, /dev/ttyS0, as 410 system console. 411 412 If unsure, say N. 413 414config SPARC_LEON 415 bool "Sparc Leon processor family" 416 depends on SPARC32 417 ---help--- 418 If you say Y here if you are running on a SPARC-LEON processor. 419 The LEON processor is a synthesizable VHDL model of the 420 SPARC-v8 standard. LEON is part of the GRLIB collection of 421 IP cores that are distributed under GPL. GRLIB can be downloaded 422 from www.gaisler.com. You can download a sparc-linux cross-compilation 423 toolchain at www.gaisler.com. 424 425if SPARC_LEON 426menu "U-Boot options" 427 428config UBOOT_LOAD_ADDR 429 hex "uImage Load Address" 430 default 0x40004000 431 ---help--- 432 U-Boot kernel load address, the address in physical address space 433 where u-boot will place the Linux kernel before booting it. 434 This address is normally the base address of main memory + 0x4000. 435 436config UBOOT_FLASH_ADDR 437 hex "uImage.o Load Address" 438 default 0x00080000 439 ---help--- 440 Optional setting only affecting the uImage.o ELF-image used to 441 download the uImage file to the target using a ELF-loader other than 442 U-Boot. It may for example be used to download an uImage to FLASH with 443 the GRMON utility before even starting u-boot. 444 445config UBOOT_ENTRY_ADDR 446 hex "uImage Entry Address" 447 default 0xf0004000 448 ---help--- 449 Do not change this unless you know what you're doing. This is 450 hardcoded by the SPARC32 and LEON port. 451 452 This is the virtual address u-boot jumps to when booting the Linux 453 Kernel. 454 455endmenu 456endif 457 458endmenu 459 460menu "Bus options (PCI etc.)" 461config SBUS 462 bool 463 default y 464 465config SBUSCHAR 466 bool 467 default y 468 469config SUN_LDOMS 470 bool "Sun Logical Domains support" 471 depends on SPARC64 472 help 473 Say Y here is you want to support virtual devices via 474 Logical Domains. 475 476config PCI 477 bool "Support for PCI and PS/2 keyboard/mouse" 478 help 479 Find out whether your system includes a PCI bus. PCI is the name of 480 a bus system, i.e. the way the CPU talks to the other stuff inside 481 your box. If you say Y here, the kernel will include drivers and 482 infrastructure code to support PCI bus devices. 483 484 CONFIG_PCI is needed for all JavaStation's (including MrCoffee), 485 CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC. 486 All of these platforms are extremely obscure, so say N if unsure. 487 488config PCI_DOMAINS 489 def_bool PCI if SPARC64 490 491config PCI_SYSCALL 492 def_bool PCI 493 494config PCIC_PCI 495 bool 496 depends on PCI && SPARC32 && !SPARC_LEON 497 default y 498 499config LEON_PCI 500 bool 501 depends on PCI && SPARC_LEON 502 default y 503 504config GRPCI2 505 bool "GRPCI2 Host Bridge Support" 506 depends on LEON_PCI 507 default y 508 help 509 Say Y here to include the GRPCI2 Host Bridge Driver. 510 511source "drivers/pci/Kconfig" 512 513source "drivers/pcmcia/Kconfig" 514 515config SUN_OPENPROMFS 516 tristate "Openprom tree appears in /proc/openprom" 517 help 518 If you say Y, the OpenPROM device tree will be available as a 519 virtual file system, which you can mount to /proc/openprom by "mount 520 -t openpromfs none /proc/openprom". 521 522 To compile the /proc/openprom support as a module, choose M here: the 523 module will be called openpromfs. 524 525 Only choose N if you know in advance that you will not need to modify 526 OpenPROM settings on the running system. 527 528# Makefile helper 529config SPARC64_PCI 530 bool 531 default y 532 depends on SPARC64 && PCI 533 534endmenu 535 536menu "Executable file formats" 537 538source "fs/Kconfig.binfmt" 539 540config COMPAT 541 bool 542 depends on SPARC64 543 default y 544 select COMPAT_BINFMT_ELF 545 select HAVE_UID16 546 select ARCH_WANT_OLD_COMPAT_IPC 547 548config SYSVIPC_COMPAT 549 bool 550 depends on COMPAT && SYSVIPC 551 default y 552 553config KEYS_COMPAT 554 def_bool y if COMPAT && KEYS 555 556endmenu 557 558source "net/Kconfig" 559 560source "drivers/Kconfig" 561 562source "drivers/sbus/char/Kconfig" 563 564source "fs/Kconfig" 565 566source "arch/sparc/Kconfig.debug" 567 568source "security/Kconfig" 569 570source "crypto/Kconfig" 571 572source "lib/Kconfig" 573