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 select GENERIC_KERNEL_THREAD 45 select GENERIC_KERNEL_EXECVE 46 47config SPARC32 48 def_bool !64BIT 49 select GENERIC_ATOMIC64 50 select CLZ_TAB 51 select HAVE_UID16 52 53config SPARC64 54 def_bool 64BIT 55 select ARCH_SUPPORTS_MSI 56 select HAVE_FUNCTION_TRACER 57 select HAVE_FUNCTION_GRAPH_TRACER 58 select HAVE_FUNCTION_GRAPH_FP_TEST 59 select HAVE_FUNCTION_TRACE_MCOUNT_TEST 60 select HAVE_KRETPROBES 61 select HAVE_KPROBES 62 select HAVE_RCU_TABLE_FREE if SMP 63 select HAVE_MEMBLOCK 64 select HAVE_MEMBLOCK_NODE_MAP 65 select HAVE_SYSCALL_WRAPPERS 66 select HAVE_DYNAMIC_FTRACE 67 select HAVE_FTRACE_MCOUNT_RECORD 68 select HAVE_SYSCALL_TRACEPOINTS 69 select HAVE_DEBUG_KMEMLEAK 70 select RTC_DRV_CMOS 71 select RTC_DRV_BQ4802 72 select RTC_DRV_SUN4V 73 select RTC_DRV_STARFIRE 74 select HAVE_PERF_EVENTS 75 select PERF_USE_VMALLOC 76 select IRQ_PREFLOW_FASTEOI 77 select ARCH_HAVE_NMI_SAFE_CMPXCHG 78 select HAVE_C_RECORDMCOUNT 79 select NO_BOOTMEM 80 81config ARCH_DEFCONFIG 82 string 83 default "arch/sparc/configs/sparc32_defconfig" if SPARC32 84 default "arch/sparc/configs/sparc64_defconfig" if SPARC64 85 86# CONFIG_BITS can be used at source level to get 32/64 bits 87config BITS 88 int 89 default 32 if SPARC32 90 default 64 if SPARC64 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 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 GENERIC_GPIO 144 bool 145 help 146 Generic GPIO API support 147 148config ARCH_NO_VIRT_TO_BUS 149 def_bool y 150 151config ARCH_SUPPORTS_DEBUG_PAGEALLOC 152 def_bool y if SPARC64 153 154source "init/Kconfig" 155 156source "kernel/Kconfig.freezer" 157 158menu "Processor type and features" 159 160config SMP 161 bool "Symmetric multi-processing support" 162 ---help--- 163 This enables support for systems with more than one CPU. If you have 164 a system with only one CPU, say N. If you have a system with more 165 than one CPU, say Y. 166 167 If you say N here, the kernel will run on single and multiprocessor 168 machines, but will use only one CPU of a multiprocessor machine. If 169 you say Y here, the kernel will run on many, but not all, 170 singleprocessor machines. On a singleprocessor machine, the kernel 171 will run faster if you say N here. 172 173 People using multiprocessor machines who say Y here should also say 174 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power 175 Management" code will be disabled if you say Y here. 176 177 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO 178 available at <http://www.tldp.org/docs.html#howto>. 179 180 If you don't know what to do here, say N. 181 182config NR_CPUS 183 int "Maximum number of CPUs" 184 depends on SMP 185 range 2 32 if SPARC32 186 range 2 1024 if SPARC64 187 default 32 if SPARC32 188 default 64 if SPARC64 189 190source kernel/Kconfig.hz 191 192config RWSEM_GENERIC_SPINLOCK 193 bool 194 default y if SPARC32 195 196config RWSEM_XCHGADD_ALGORITHM 197 bool 198 default y if SPARC64 199 200config GENERIC_HWEIGHT 201 bool 202 default y if !ULTRA_HAS_POPULATION_COUNT 203 204config GENERIC_CALIBRATE_DELAY 205 bool 206 default y 207 208config ARCH_MAY_HAVE_PC_FDC 209 bool 210 default y 211 212config EMULATED_CMPXCHG 213 bool 214 default y if SPARC32 215 help 216 Sparc32 does not have a CAS instruction like sparc64. cmpxchg() 217 is emulated, and therefore it is not completely atomic. 218 219# Makefile helpers 220config SPARC32_SMP 221 bool 222 default y 223 depends on SPARC32 && SMP 224 225config SPARC64_SMP 226 bool 227 default y 228 depends on SPARC64 && SMP 229 230config EARLYFB 231 bool "Support for early boot text console" 232 default y 233 depends on SPARC64 234 help 235 Say Y here to enable a faster early framebuffer boot console. 236 237config SECCOMP 238 bool "Enable seccomp to safely compute untrusted bytecode" 239 depends on SPARC64 && PROC_FS 240 default y 241 help 242 This kernel feature is useful for number crunching applications 243 that may need to compute untrusted bytecode during their 244 execution. By using pipes or other transports made available to 245 the process as file descriptors supporting the read/write 246 syscalls, it's possible to isolate those applications in 247 their own address space using seccomp. Once seccomp is 248 enabled via /proc/<pid>/seccomp, it cannot be disabled 249 and the task is only allowed to execute a few safe syscalls 250 defined by each seccomp mode. 251 252 If unsure, say Y. Only embedded should say N here. 253 254config HOTPLUG_CPU 255 bool "Support for hot-pluggable CPUs" 256 depends on SPARC64 && SMP 257 select HOTPLUG 258 help 259 Say Y here to experiment with turning CPUs off and on. CPUs 260 can be controlled through /sys/devices/system/cpu/cpu#. 261 Say N if you want to disable CPU hotplug. 262 263if SPARC64 264source "drivers/cpufreq/Kconfig" 265 266config US3_FREQ 267 tristate "UltraSPARC-III CPU Frequency driver" 268 depends on CPU_FREQ 269 select CPU_FREQ_TABLE 270 help 271 This adds the CPUFreq driver for UltraSPARC-III processors. 272 273 For details, take a look at <file:Documentation/cpu-freq>. 274 275 If in doubt, say N. 276 277config US2E_FREQ 278 tristate "UltraSPARC-IIe CPU Frequency driver" 279 depends on CPU_FREQ 280 select CPU_FREQ_TABLE 281 help 282 This adds the CPUFreq driver for UltraSPARC-IIe processors. 283 284 For details, take a look at <file:Documentation/cpu-freq>. 285 286 If in doubt, say N. 287 288endif 289 290config US3_MC 291 tristate "UltraSPARC-III Memory Controller driver" 292 depends on SPARC64 293 default y 294 help 295 This adds a driver for the UltraSPARC-III memory controller. 296 Loading this driver allows exact mnemonic strings to be 297 printed in the event of a memory error, so that the faulty DIMM 298 on the motherboard can be matched to the error. 299 300 If in doubt, say Y, as this information can be very useful. 301 302# Global things across all Sun machines. 303config GENERIC_LOCKBREAK 304 bool 305 default y 306 depends on SPARC64 && SMP && PREEMPT 307 308config NUMA 309 bool "NUMA support" 310 depends on SPARC64 && SMP 311 312config NODES_SHIFT 313 int 314 default "4" 315 depends on NEED_MULTIPLE_NODES 316 317# Some NUMA nodes have memory ranges that span 318# other nodes. Even though a pfn is valid and 319# between a node's start and end pfns, it may not 320# reside on that node. See memmap_init_zone() 321# for details. 322config NODES_SPAN_OTHER_NODES 323 def_bool y 324 depends on NEED_MULTIPLE_NODES 325 326config ARCH_SELECT_MEMORY_MODEL 327 def_bool y if SPARC64 328 329config ARCH_SPARSEMEM_ENABLE 330 def_bool y if SPARC64 331 select SPARSEMEM_VMEMMAP_ENABLE 332 333config ARCH_SPARSEMEM_DEFAULT 334 def_bool y if SPARC64 335 336source "mm/Kconfig" 337 338config SCHED_SMT 339 bool "SMT (Hyperthreading) scheduler support" 340 depends on SPARC64 && SMP 341 default y 342 help 343 SMT scheduler support improves the CPU scheduler's decision making 344 when dealing with SPARC cpus at a cost of slightly increased overhead 345 in some places. If unsure say N here. 346 347config SCHED_MC 348 bool "Multi-core scheduler support" 349 depends on SPARC64 && SMP 350 default y 351 help 352 Multi-core scheduler support improves the CPU scheduler's decision 353 making when dealing with multi-core CPU chips at a cost of slightly 354 increased overhead in some places. If unsure say N here. 355 356source "kernel/Kconfig.preempt" 357 358config CMDLINE_BOOL 359 bool "Default bootloader kernel arguments" 360 depends on SPARC64 361 362config CMDLINE 363 string "Initial kernel command string" 364 depends on CMDLINE_BOOL 365 default "console=ttyS0,9600 root=/dev/sda1" 366 help 367 Say Y here if you want to be able to pass default arguments to 368 the kernel. This will be overridden by the bootloader, if you 369 use one (such as SILO). This is most useful if you want to boot 370 a kernel from TFTP, and want default options to be available 371 with having them passed on the command line. 372 373 NOTE: This option WILL override the PROM bootargs setting! 374 375config SUN_PM 376 bool 377 default y if SPARC32 378 help 379 Enable power management and CPU standby features on supported 380 SPARC platforms. 381 382config SPARC_LED 383 tristate "Sun4m LED driver" 384 depends on SPARC32 385 help 386 This driver toggles the front-panel LED on sun4m systems 387 in a user-specifiable manner. Its state can be probed 388 by reading /proc/led and its blinking mode can be changed 389 via writes to /proc/led 390 391config SERIAL_CONSOLE 392 bool 393 depends on SPARC32 394 default y 395 ---help--- 396 If you say Y here, it will be possible to use a serial port as the 397 system console (the system console is the device which receives all 398 kernel messages and warnings and which allows logins in single user 399 mode). This could be useful if some terminal or printer is connected 400 to that serial port. 401 402 Even if you say Y here, the currently visible virtual console 403 (/dev/tty0) will still be used as the system console by default, but 404 you can alter that using a kernel command line option such as 405 "console=ttyS1". (Try "man bootparam" or see the documentation of 406 your boot loader (silo) about how to pass options to the kernel at 407 boot time.) 408 409 If you don't have a graphics card installed and you say Y here, the 410 kernel will automatically use the first serial line, /dev/ttyS0, as 411 system console. 412 413 If unsure, say N. 414 415config SPARC_LEON 416 bool "Sparc Leon processor family" 417 depends on SPARC32 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 GRPCI2 506 bool "GRPCI2 Host Bridge Support" 507 depends on LEON_PCI 508 default y 509 help 510 Say Y here to include the GRPCI2 Host Bridge Driver. 511 512source "drivers/pci/Kconfig" 513 514source "drivers/pcmcia/Kconfig" 515 516config SUN_OPENPROMFS 517 tristate "Openprom tree appears in /proc/openprom" 518 help 519 If you say Y, the OpenPROM device tree will be available as a 520 virtual file system, which you can mount to /proc/openprom by "mount 521 -t openpromfs none /proc/openprom". 522 523 To compile the /proc/openprom support as a module, choose M here: the 524 module will be called openpromfs. 525 526 Only choose N if you know in advance that you will not need to modify 527 OpenPROM settings on the running system. 528 529# Makefile helper 530config SPARC64_PCI 531 bool 532 default y 533 depends on SPARC64 && PCI 534 535endmenu 536 537menu "Executable file formats" 538 539source "fs/Kconfig.binfmt" 540 541config COMPAT 542 bool 543 depends on SPARC64 544 default y 545 select COMPAT_BINFMT_ELF 546 select HAVE_UID16 547 select ARCH_WANT_OLD_COMPAT_IPC 548 549config SYSVIPC_COMPAT 550 bool 551 depends on COMPAT && SYSVIPC 552 default y 553 554config KEYS_COMPAT 555 def_bool y if COMPAT && KEYS 556 557endmenu 558 559source "net/Kconfig" 560 561source "drivers/Kconfig" 562 563source "drivers/sbus/char/Kconfig" 564 565source "fs/Kconfig" 566 567source "arch/sparc/Kconfig.debug" 568 569source "security/Kconfig" 570 571source "crypto/Kconfig" 572 573source "lib/Kconfig" 574