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 ARCH_WANT_OPTIONAL_GPIOLIB 22 select RTC_CLASS 23 select RTC_DRV_M48T59 24 select HAVE_IRQ_WORK 25 select HAVE_DMA_ATTRS 26 select HAVE_DMA_API_DEBUG 27 select HAVE_ARCH_JUMP_LABEL 28 select HAVE_GENERIC_HARDIRQS 29 select GENERIC_IRQ_SHOW 30 select USE_GENERIC_SMP_HELPERS if SMP 31 select GENERIC_PCI_IOMAP 32 select HAVE_NMI_WATCHDOG if SPARC64 33 select HAVE_BPF_JIT 34 select GENERIC_SMP_IDLE_THREAD 35 select GENERIC_CMOS_UPDATE 36 select GENERIC_CLOCKEVENTS 37 select GENERIC_STRNCPY_FROM_USER 38 select GENERIC_STRNLEN_USER 39 40config SPARC32 41 def_bool !64BIT 42 select GENERIC_ATOMIC64 43 select CLZ_TAB 44 45config SPARC64 46 def_bool 64BIT 47 select ARCH_SUPPORTS_MSI 48 select HAVE_FUNCTION_TRACER 49 select HAVE_FUNCTION_GRAPH_TRACER 50 select HAVE_FUNCTION_GRAPH_FP_TEST 51 select HAVE_FUNCTION_TRACE_MCOUNT_TEST 52 select HAVE_KRETPROBES 53 select HAVE_KPROBES 54 select HAVE_RCU_TABLE_FREE if SMP 55 select HAVE_MEMBLOCK 56 select HAVE_MEMBLOCK_NODE_MAP 57 select HAVE_SYSCALL_WRAPPERS 58 select HAVE_DYNAMIC_FTRACE 59 select HAVE_FTRACE_MCOUNT_RECORD 60 select HAVE_SYSCALL_TRACEPOINTS 61 select RTC_DRV_CMOS 62 select RTC_DRV_BQ4802 63 select RTC_DRV_SUN4V 64 select RTC_DRV_STARFIRE 65 select HAVE_PERF_EVENTS 66 select PERF_USE_VMALLOC 67 select IRQ_PREFLOW_FASTEOI 68 select ARCH_HAVE_NMI_SAFE_CMPXCHG 69 select HAVE_C_RECORDMCOUNT 70 select NO_BOOTMEM 71 72config ARCH_DEFCONFIG 73 string 74 default "arch/sparc/configs/sparc32_defconfig" if SPARC32 75 default "arch/sparc/configs/sparc64_defconfig" if SPARC64 76 77# CONFIG_BITS can be used at source level to get 32/64 bits 78config BITS 79 int 80 default 32 if SPARC32 81 default 64 if SPARC64 82 83config IOMMU_HELPER 84 bool 85 default y if SPARC64 86 87config STACKTRACE_SUPPORT 88 bool 89 default y if SPARC64 90 91config LOCKDEP_SUPPORT 92 bool 93 default y if SPARC64 94 95config HAVE_LATENCYTOP_SUPPORT 96 bool 97 default y if SPARC64 98 99config AUDIT_ARCH 100 bool 101 default y 102 103config HAVE_SETUP_PER_CPU_AREA 104 def_bool y if SPARC64 105 106config NEED_PER_CPU_EMBED_FIRST_CHUNK 107 def_bool y if SPARC64 108 109config NEED_PER_CPU_PAGE_FIRST_CHUNK 110 def_bool y if SPARC64 111 112config MMU 113 bool 114 default y 115 116config HIGHMEM 117 bool 118 default y if SPARC32 119 120config ZONE_DMA 121 bool 122 default y if SPARC32 123 124config NEED_DMA_MAP_STATE 125 def_bool y 126 127config NEED_SG_DMA_LENGTH 128 def_bool y 129 130config GENERIC_ISA_DMA 131 bool 132 default y if SPARC32 133 134config GENERIC_GPIO 135 bool 136 help 137 Generic GPIO API support 138 139config ARCH_NO_VIRT_TO_BUS 140 def_bool y 141 142config ARCH_SUPPORTS_DEBUG_PAGEALLOC 143 def_bool y if SPARC64 144 145source "init/Kconfig" 146 147source "kernel/Kconfig.freezer" 148 149menu "Processor type and features" 150 151config SMP 152 bool "Symmetric multi-processing support" 153 ---help--- 154 This enables support for systems with more than one CPU. If you have 155 a system with only one CPU, say N. If you have a system with more 156 than one CPU, say Y. 157 158 If you say N here, the kernel will run on single and multiprocessor 159 machines, but will use only one CPU of a multiprocessor machine. If 160 you say Y here, the kernel will run on many, but not all, 161 singleprocessor machines. On a singleprocessor machine, the kernel 162 will run faster if you say N here. 163 164 People using multiprocessor machines who say Y here should also say 165 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power 166 Management" code will be disabled if you say Y here. 167 168 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO 169 available at <http://www.tldp.org/docs.html#howto>. 170 171 If you don't know what to do here, say N. 172 173config NR_CPUS 174 int "Maximum number of CPUs" 175 depends on SMP 176 range 2 32 if SPARC32 177 range 2 1024 if SPARC64 178 default 32 if SPARC32 179 default 64 if SPARC64 180 181source kernel/Kconfig.hz 182 183config RWSEM_GENERIC_SPINLOCK 184 bool 185 default y if SPARC32 186 187config RWSEM_XCHGADD_ALGORITHM 188 bool 189 default y if SPARC64 190 191config GENERIC_HWEIGHT 192 bool 193 default y if !ULTRA_HAS_POPULATION_COUNT 194 195config GENERIC_CALIBRATE_DELAY 196 bool 197 default y 198 199config ARCH_MAY_HAVE_PC_FDC 200 bool 201 default y 202 203config EMULATED_CMPXCHG 204 bool 205 default y if SPARC32 206 help 207 Sparc32 does not have a CAS instruction like sparc64. cmpxchg() 208 is emulated, and therefore it is not completely atomic. 209 210# Makefile helpers 211config SPARC32_SMP 212 bool 213 default y 214 depends on SPARC32 && SMP 215 216config SPARC64_SMP 217 bool 218 default y 219 depends on SPARC64 && SMP 220 221config EARLYFB 222 bool "Support for early boot text console" 223 default y 224 depends on SPARC64 225 help 226 Say Y here to enable a faster early framebuffer boot console. 227 228choice 229 prompt "Kernel page size" if SPARC64 230 default SPARC64_PAGE_SIZE_8KB 231 232config SPARC64_PAGE_SIZE_8KB 233 bool "8KB" 234 help 235 This lets you select the page size of the kernel. 236 237 8KB and 64KB work quite well, since SPARC ELF sections 238 provide for up to 64KB alignment. 239 240 If you don't know what to do, choose 8KB. 241 242config SPARC64_PAGE_SIZE_64KB 243 bool "64KB" 244 245endchoice 246 247config SECCOMP 248 bool "Enable seccomp to safely compute untrusted bytecode" 249 depends on SPARC64 && PROC_FS 250 default y 251 help 252 This kernel feature is useful for number crunching applications 253 that may need to compute untrusted bytecode during their 254 execution. By using pipes or other transports made available to 255 the process as file descriptors supporting the read/write 256 syscalls, it's possible to isolate those applications in 257 their own address space using seccomp. Once seccomp is 258 enabled via /proc/<pid>/seccomp, it cannot be disabled 259 and the task is only allowed to execute a few safe syscalls 260 defined by each seccomp mode. 261 262 If unsure, say Y. Only embedded should say N here. 263 264config HOTPLUG_CPU 265 bool "Support for hot-pluggable CPUs" 266 depends on SPARC64 && SMP 267 select HOTPLUG 268 help 269 Say Y here to experiment with turning CPUs off and on. CPUs 270 can be controlled through /sys/devices/system/cpu/cpu#. 271 Say N if you want to disable CPU hotplug. 272 273if SPARC64 274source "drivers/cpufreq/Kconfig" 275 276config US3_FREQ 277 tristate "UltraSPARC-III CPU Frequency driver" 278 depends on CPU_FREQ 279 select CPU_FREQ_TABLE 280 help 281 This adds the CPUFreq driver for UltraSPARC-III processors. 282 283 For details, take a look at <file:Documentation/cpu-freq>. 284 285 If in doubt, say N. 286 287config US2E_FREQ 288 tristate "UltraSPARC-IIe CPU Frequency driver" 289 depends on CPU_FREQ 290 select CPU_FREQ_TABLE 291 help 292 This adds the CPUFreq driver for UltraSPARC-IIe processors. 293 294 For details, take a look at <file:Documentation/cpu-freq>. 295 296 If in doubt, say N. 297 298endif 299 300config US3_MC 301 tristate "UltraSPARC-III Memory Controller driver" 302 depends on SPARC64 303 default y 304 help 305 This adds a driver for the UltraSPARC-III memory controller. 306 Loading this driver allows exact mnemonic strings to be 307 printed in the event of a memory error, so that the faulty DIMM 308 on the motherboard can be matched to the error. 309 310 If in doubt, say Y, as this information can be very useful. 311 312# Global things across all Sun machines. 313config GENERIC_LOCKBREAK 314 bool 315 default y 316 depends on SPARC64 && SMP && PREEMPT 317 318choice 319 prompt "SPARC64 Huge TLB Page Size" 320 depends on SPARC64 && HUGETLB_PAGE 321 default HUGETLB_PAGE_SIZE_4MB 322 323config HUGETLB_PAGE_SIZE_4MB 324 bool "4MB" 325 326config HUGETLB_PAGE_SIZE_512K 327 bool "512K" 328 329config HUGETLB_PAGE_SIZE_64K 330 depends on !SPARC64_PAGE_SIZE_64KB 331 bool "64K" 332 333endchoice 334 335config NUMA 336 bool "NUMA support" 337 depends on SPARC64 && SMP 338 339config NODES_SHIFT 340 int 341 default "4" 342 depends on NEED_MULTIPLE_NODES 343 344# Some NUMA nodes have memory ranges that span 345# other nodes. Even though a pfn is valid and 346# between a node's start and end pfns, it may not 347# reside on that node. See memmap_init_zone() 348# for details. 349config NODES_SPAN_OTHER_NODES 350 def_bool y 351 depends on NEED_MULTIPLE_NODES 352 353config ARCH_SELECT_MEMORY_MODEL 354 def_bool y if SPARC64 355 356config ARCH_SPARSEMEM_ENABLE 357 def_bool y if SPARC64 358 select SPARSEMEM_VMEMMAP_ENABLE 359 360config ARCH_SPARSEMEM_DEFAULT 361 def_bool y if SPARC64 362 363source "mm/Kconfig" 364 365config SCHED_SMT 366 bool "SMT (Hyperthreading) scheduler support" 367 depends on SPARC64 && SMP 368 default y 369 help 370 SMT scheduler support improves the CPU scheduler's decision making 371 when dealing with SPARC cpus at a cost of slightly increased overhead 372 in some places. If unsure say N here. 373 374config SCHED_MC 375 bool "Multi-core scheduler support" 376 depends on SPARC64 && SMP 377 default y 378 help 379 Multi-core scheduler support improves the CPU scheduler's decision 380 making when dealing with multi-core CPU chips at a cost of slightly 381 increased overhead in some places. If unsure say N here. 382 383source "kernel/Kconfig.preempt" 384 385config CMDLINE_BOOL 386 bool "Default bootloader kernel arguments" 387 depends on SPARC64 388 389config CMDLINE 390 string "Initial kernel command string" 391 depends on CMDLINE_BOOL 392 default "console=ttyS0,9600 root=/dev/sda1" 393 help 394 Say Y here if you want to be able to pass default arguments to 395 the kernel. This will be overridden by the bootloader, if you 396 use one (such as SILO). This is most useful if you want to boot 397 a kernel from TFTP, and want default options to be available 398 with having them passed on the command line. 399 400 NOTE: This option WILL override the PROM bootargs setting! 401 402config SUN_PM 403 bool 404 default y if SPARC32 405 help 406 Enable power management and CPU standby features on supported 407 SPARC platforms. 408 409config SPARC_LED 410 tristate "Sun4m LED driver" 411 depends on SPARC32 412 help 413 This driver toggles the front-panel LED on sun4m systems 414 in a user-specifiable manner. Its state can be probed 415 by reading /proc/led and its blinking mode can be changed 416 via writes to /proc/led 417 418config SERIAL_CONSOLE 419 bool 420 depends on SPARC32 421 default y 422 ---help--- 423 If you say Y here, it will be possible to use a serial port as the 424 system console (the system console is the device which receives all 425 kernel messages and warnings and which allows logins in single user 426 mode). This could be useful if some terminal or printer is connected 427 to that serial port. 428 429 Even if you say Y here, the currently visible virtual console 430 (/dev/tty0) will still be used as the system console by default, but 431 you can alter that using a kernel command line option such as 432 "console=ttyS1". (Try "man bootparam" or see the documentation of 433 your boot loader (silo) about how to pass options to the kernel at 434 boot time.) 435 436 If you don't have a graphics card installed and you say Y here, the 437 kernel will automatically use the first serial line, /dev/ttyS0, as 438 system console. 439 440 If unsure, say N. 441 442config SPARC_LEON 443 bool "Sparc Leon processor family" 444 depends on SPARC32 445 ---help--- 446 If you say Y here if you are running on a SPARC-LEON processor. 447 The LEON processor is a synthesizable VHDL model of the 448 SPARC-v8 standard. LEON is part of the GRLIB collection of 449 IP cores that are distributed under GPL. GRLIB can be downloaded 450 from www.gaisler.com. You can download a sparc-linux cross-compilation 451 toolchain at www.gaisler.com. 452 453if SPARC_LEON 454menu "U-Boot options" 455 456config UBOOT_LOAD_ADDR 457 hex "uImage Load Address" 458 default 0x40004000 459 ---help--- 460 U-Boot kernel load address, the address in physical address space 461 where u-boot will place the Linux kernel before booting it. 462 This address is normally the base address of main memory + 0x4000. 463 464config UBOOT_FLASH_ADDR 465 hex "uImage.o Load Address" 466 default 0x00080000 467 ---help--- 468 Optional setting only affecting the uImage.o ELF-image used to 469 download the uImage file to the target using a ELF-loader other than 470 U-Boot. It may for example be used to download an uImage to FLASH with 471 the GRMON utility before even starting u-boot. 472 473config UBOOT_ENTRY_ADDR 474 hex "uImage Entry Address" 475 default 0xf0004000 476 ---help--- 477 Do not change this unless you know what you're doing. This is 478 hardcoded by the SPARC32 and LEON port. 479 480 This is the virtual address u-boot jumps to when booting the Linux 481 Kernel. 482 483endmenu 484endif 485 486endmenu 487 488menu "Bus options (PCI etc.)" 489config SBUS 490 bool 491 default y 492 493config SBUSCHAR 494 bool 495 default y 496 497config SUN_LDOMS 498 bool "Sun Logical Domains support" 499 depends on SPARC64 500 help 501 Say Y here is you want to support virtual devices via 502 Logical Domains. 503 504config PCI 505 bool "Support for PCI and PS/2 keyboard/mouse" 506 help 507 Find out whether your system includes a PCI bus. PCI is the name of 508 a bus system, i.e. the way the CPU talks to the other stuff inside 509 your box. If you say Y here, the kernel will include drivers and 510 infrastructure code to support PCI bus devices. 511 512 CONFIG_PCI is needed for all JavaStation's (including MrCoffee), 513 CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC. 514 All of these platforms are extremely obscure, so say N if unsure. 515 516config PCI_DOMAINS 517 def_bool PCI if SPARC64 518 519config PCI_SYSCALL 520 def_bool PCI 521 522config PCIC_PCI 523 bool 524 depends on PCI && SPARC32 && !SPARC_LEON 525 default y 526 527config LEON_PCI 528 bool 529 depends on PCI && SPARC_LEON 530 default y 531 532config GRPCI2 533 bool "GRPCI2 Host Bridge Support" 534 depends on LEON_PCI 535 default y 536 help 537 Say Y here to include the GRPCI2 Host Bridge Driver. 538 539source "drivers/pci/Kconfig" 540 541source "drivers/pcmcia/Kconfig" 542 543config SUN_OPENPROMFS 544 tristate "Openprom tree appears in /proc/openprom" 545 help 546 If you say Y, the OpenPROM device tree will be available as a 547 virtual file system, which you can mount to /proc/openprom by "mount 548 -t openpromfs none /proc/openprom". 549 550 To compile the /proc/openprom support as a module, choose M here: the 551 module will be called openpromfs. 552 553 Only choose N if you know in advance that you will not need to modify 554 OpenPROM settings on the running system. 555 556# Makefile helper 557config SPARC64_PCI 558 bool 559 default y 560 depends on SPARC64 && PCI 561 562endmenu 563 564menu "Executable file formats" 565 566source "fs/Kconfig.binfmt" 567 568config COMPAT 569 bool 570 depends on SPARC64 571 default y 572 select COMPAT_BINFMT_ELF 573 select ARCH_WANT_OLD_COMPAT_IPC 574 575config SYSVIPC_COMPAT 576 bool 577 depends on COMPAT && SYSVIPC 578 default y 579 580config KEYS_COMPAT 581 def_bool y if COMPAT && KEYS 582 583endmenu 584 585source "net/Kconfig" 586 587source "drivers/Kconfig" 588 589source "drivers/sbus/char/Kconfig" 590 591source "fs/Kconfig" 592 593source "arch/sparc/Kconfig.debug" 594 595source "security/Kconfig" 596 597source "crypto/Kconfig" 598 599source "lib/Kconfig" 600