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_DMA_ATTRS 27 select HAVE_DMA_API_DEBUG 28 select HAVE_ARCH_JUMP_LABEL 29 select HAVE_GENERIC_HARDIRQS 30 select GENERIC_IRQ_SHOW 31 select ARCH_WANT_IPC_PARSE_VERSION 32 select USE_GENERIC_SMP_HELPERS if SMP 33 select GENERIC_PCI_IOMAP 34 select HAVE_NMI_WATCHDOG if SPARC64 35 select HAVE_BPF_JIT 36 select HAVE_DEBUG_BUGVERBOSE 37 select GENERIC_SMP_IDLE_THREAD 38 select GENERIC_CMOS_UPDATE 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 46config SPARC32 47 def_bool !64BIT 48 select GENERIC_ATOMIC64 49 select CLZ_TAB 50 select HAVE_UID16 51 select OLD_SIGACTION 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_ARCH_TRANSPARENT_HUGEPAGE 67 select HAVE_DYNAMIC_FTRACE 68 select HAVE_FTRACE_MCOUNT_RECORD 69 select HAVE_SYSCALL_TRACEPOINTS 70 select HAVE_DEBUG_KMEMLEAK 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 82config ARCH_DEFCONFIG 83 string 84 default "arch/sparc/configs/sparc32_defconfig" if SPARC32 85 default "arch/sparc/configs/sparc64_defconfig" if SPARC64 86 87config IOMMU_HELPER 88 bool 89 default y if SPARC64 90 91config STACKTRACE_SUPPORT 92 bool 93 default y if SPARC64 94 95config LOCKDEP_SUPPORT 96 bool 97 default y if SPARC64 98 99config HAVE_LATENCYTOP_SUPPORT 100 bool 101 default y if SPARC64 102 103config AUDIT_ARCH 104 bool 105 default y 106 107config HAVE_SETUP_PER_CPU_AREA 108 def_bool y if SPARC64 109 110config NEED_PER_CPU_EMBED_FIRST_CHUNK 111 def_bool y if SPARC64 112 113config NEED_PER_CPU_PAGE_FIRST_CHUNK 114 def_bool y if SPARC64 115 116config MMU 117 bool 118 default y 119 120config HIGHMEM 121 bool 122 default y if SPARC32 123 124config ZONE_DMA 125 bool 126 default y if SPARC32 127 128config NEED_DMA_MAP_STATE 129 def_bool y 130 131config NEED_SG_DMA_LENGTH 132 def_bool y 133 134config GENERIC_ISA_DMA 135 bool 136 default y if SPARC32 137 138config GENERIC_GPIO 139 bool 140 help 141 Generic GPIO API support 142 143config ARCH_SUPPORTS_DEBUG_PAGEALLOC 144 def_bool y if SPARC64 145 146source "init/Kconfig" 147 148source "kernel/Kconfig.freezer" 149 150menu "Processor type and features" 151 152config SMP 153 bool "Symmetric multi-processing support" 154 ---help--- 155 This enables support for systems with more than one CPU. If you have 156 a system with only one CPU, say N. If you have a system with more 157 than one CPU, say Y. 158 159 If you say N here, the kernel will run on single and multiprocessor 160 machines, but will use only one CPU of a multiprocessor machine. If 161 you say Y here, the kernel will run on many, but not all, 162 singleprocessor machines. On a singleprocessor machine, the kernel 163 will run faster if you say N here. 164 165 People using multiprocessor machines who say Y here should also say 166 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power 167 Management" code will be disabled if you say Y here. 168 169 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO 170 available at <http://www.tldp.org/docs.html#howto>. 171 172 If you don't know what to do here, say N. 173 174config NR_CPUS 175 int "Maximum number of CPUs" 176 depends on SMP 177 range 2 32 if SPARC32 178 range 2 1024 if SPARC64 179 default 32 if SPARC32 180 default 64 if SPARC64 181 182source kernel/Kconfig.hz 183 184config RWSEM_GENERIC_SPINLOCK 185 bool 186 default y if SPARC32 187 188config RWSEM_XCHGADD_ALGORITHM 189 bool 190 default y if SPARC64 191 192config GENERIC_HWEIGHT 193 bool 194 default y 195 196config GENERIC_CALIBRATE_DELAY 197 bool 198 default y 199 200config ARCH_MAY_HAVE_PC_FDC 201 bool 202 default y 203 204config EMULATED_CMPXCHG 205 bool 206 default y if SPARC32 207 help 208 Sparc32 does not have a CAS instruction like sparc64. cmpxchg() 209 is emulated, and therefore it is not completely atomic. 210 211# Makefile helpers 212config SPARC32_SMP 213 bool 214 default y 215 depends on SPARC32 && SMP 216 217config SPARC64_SMP 218 bool 219 default y 220 depends on SPARC64 && SMP 221 222config EARLYFB 223 bool "Support for early boot text console" 224 default y 225 depends on SPARC64 226 help 227 Say Y here to enable a faster early framebuffer boot console. 228 229config SECCOMP 230 bool "Enable seccomp to safely compute untrusted bytecode" 231 depends on SPARC64 && PROC_FS 232 default y 233 help 234 This kernel feature is useful for number crunching applications 235 that may need to compute untrusted bytecode during their 236 execution. By using pipes or other transports made available to 237 the process as file descriptors supporting the read/write 238 syscalls, it's possible to isolate those applications in 239 their own address space using seccomp. Once seccomp is 240 enabled via /proc/<pid>/seccomp, it cannot be disabled 241 and the task is only allowed to execute a few safe syscalls 242 defined by each seccomp mode. 243 244 If unsure, say Y. Only embedded should say N here. 245 246config HOTPLUG_CPU 247 bool "Support for hot-pluggable CPUs" 248 depends on SPARC64 && SMP 249 select HOTPLUG 250 help 251 Say Y here to experiment with turning CPUs off and on. CPUs 252 can be controlled through /sys/devices/system/cpu/cpu#. 253 Say N if you want to disable CPU hotplug. 254 255if SPARC64 256source "drivers/cpufreq/Kconfig" 257 258config US3_FREQ 259 tristate "UltraSPARC-III CPU Frequency driver" 260 depends on CPU_FREQ 261 select CPU_FREQ_TABLE 262 help 263 This adds the CPUFreq driver for UltraSPARC-III processors. 264 265 For details, take a look at <file:Documentation/cpu-freq>. 266 267 If in doubt, say N. 268 269config US2E_FREQ 270 tristate "UltraSPARC-IIe CPU Frequency driver" 271 depends on CPU_FREQ 272 select CPU_FREQ_TABLE 273 help 274 This adds the CPUFreq driver for UltraSPARC-IIe processors. 275 276 For details, take a look at <file:Documentation/cpu-freq>. 277 278 If in doubt, say N. 279 280endif 281 282config US3_MC 283 tristate "UltraSPARC-III Memory Controller driver" 284 depends on SPARC64 285 default y 286 help 287 This adds a driver for the UltraSPARC-III memory controller. 288 Loading this driver allows exact mnemonic strings to be 289 printed in the event of a memory error, so that the faulty DIMM 290 on the motherboard can be matched to the error. 291 292 If in doubt, say Y, as this information can be very useful. 293 294# Global things across all Sun machines. 295config GENERIC_LOCKBREAK 296 bool 297 default y 298 depends on SPARC64 && SMP && PREEMPT 299 300config NUMA 301 bool "NUMA support" 302 depends on SPARC64 && SMP 303 304config NODES_SHIFT 305 int 306 default "4" 307 depends on NEED_MULTIPLE_NODES 308 309# Some NUMA nodes have memory ranges that span 310# other nodes. Even though a pfn is valid and 311# between a node's start and end pfns, it may not 312# reside on that node. See memmap_init_zone() 313# for details. 314config NODES_SPAN_OTHER_NODES 315 def_bool y 316 depends on NEED_MULTIPLE_NODES 317 318config ARCH_SELECT_MEMORY_MODEL 319 def_bool y if SPARC64 320 321config ARCH_SPARSEMEM_ENABLE 322 def_bool y if SPARC64 323 select SPARSEMEM_VMEMMAP_ENABLE 324 325config ARCH_SPARSEMEM_DEFAULT 326 def_bool y if SPARC64 327 328source "mm/Kconfig" 329 330config SCHED_SMT 331 bool "SMT (Hyperthreading) scheduler support" 332 depends on SPARC64 && SMP 333 default y 334 help 335 SMT scheduler support improves the CPU scheduler's decision making 336 when dealing with SPARC cpus at a cost of slightly increased overhead 337 in some places. If unsure say N here. 338 339config SCHED_MC 340 bool "Multi-core scheduler support" 341 depends on SPARC64 && SMP 342 default y 343 help 344 Multi-core scheduler support improves the CPU scheduler's decision 345 making when dealing with multi-core CPU chips at a cost of slightly 346 increased overhead in some places. If unsure say N here. 347 348source "kernel/Kconfig.preempt" 349 350config CMDLINE_BOOL 351 bool "Default bootloader kernel arguments" 352 depends on SPARC64 353 354config CMDLINE 355 string "Initial kernel command string" 356 depends on CMDLINE_BOOL 357 default "console=ttyS0,9600 root=/dev/sda1" 358 help 359 Say Y here if you want to be able to pass default arguments to 360 the kernel. This will be overridden by the bootloader, if you 361 use one (such as SILO). This is most useful if you want to boot 362 a kernel from TFTP, and want default options to be available 363 with having them passed on the command line. 364 365 NOTE: This option WILL override the PROM bootargs setting! 366 367config SUN_PM 368 bool 369 default y if SPARC32 370 help 371 Enable power management and CPU standby features on supported 372 SPARC platforms. 373 374config SPARC_LED 375 tristate "Sun4m LED driver" 376 depends on SPARC32 377 help 378 This driver toggles the front-panel LED on sun4m systems 379 in a user-specifiable manner. Its state can be probed 380 by reading /proc/led and its blinking mode can be changed 381 via writes to /proc/led 382 383config SERIAL_CONSOLE 384 bool 385 depends on SPARC32 386 default y 387 ---help--- 388 If you say Y here, it will be possible to use a serial port as the 389 system console (the system console is the device which receives all 390 kernel messages and warnings and which allows logins in single user 391 mode). This could be useful if some terminal or printer is connected 392 to that serial port. 393 394 Even if you say Y here, the currently visible virtual console 395 (/dev/tty0) will still be used as the system console by default, but 396 you can alter that using a kernel command line option such as 397 "console=ttyS1". (Try "man bootparam" or see the documentation of 398 your boot loader (silo) about how to pass options to the kernel at 399 boot time.) 400 401 If you don't have a graphics card installed and you say Y here, the 402 kernel will automatically use the first serial line, /dev/ttyS0, as 403 system console. 404 405 If unsure, say N. 406 407config SPARC_LEON 408 bool "Sparc Leon processor family" 409 depends on SPARC32 410 ---help--- 411 If you say Y here if you are running on a SPARC-LEON processor. 412 The LEON processor is a synthesizable VHDL model of the 413 SPARC-v8 standard. LEON is part of the GRLIB collection of 414 IP cores that are distributed under GPL. GRLIB can be downloaded 415 from www.gaisler.com. You can download a sparc-linux cross-compilation 416 toolchain at www.gaisler.com. 417 418if SPARC_LEON 419menu "U-Boot options" 420 421config UBOOT_LOAD_ADDR 422 hex "uImage Load Address" 423 default 0x40004000 424 ---help--- 425 U-Boot kernel load address, the address in physical address space 426 where u-boot will place the Linux kernel before booting it. 427 This address is normally the base address of main memory + 0x4000. 428 429config UBOOT_FLASH_ADDR 430 hex "uImage.o Load Address" 431 default 0x00080000 432 ---help--- 433 Optional setting only affecting the uImage.o ELF-image used to 434 download the uImage file to the target using a ELF-loader other than 435 U-Boot. It may for example be used to download an uImage to FLASH with 436 the GRMON utility before even starting u-boot. 437 438config UBOOT_ENTRY_ADDR 439 hex "uImage Entry Address" 440 default 0xf0004000 441 ---help--- 442 Do not change this unless you know what you're doing. This is 443 hardcoded by the SPARC32 and LEON port. 444 445 This is the virtual address u-boot jumps to when booting the Linux 446 Kernel. 447 448endmenu 449endif 450 451endmenu 452 453menu "Bus options (PCI etc.)" 454config SBUS 455 bool 456 default y 457 458config SBUSCHAR 459 bool 460 default y 461 462config SUN_LDOMS 463 bool "Sun Logical Domains support" 464 depends on SPARC64 465 help 466 Say Y here is you want to support virtual devices via 467 Logical Domains. 468 469config PCI 470 bool "Support for PCI and PS/2 keyboard/mouse" 471 help 472 Find out whether your system includes a PCI bus. PCI is the name of 473 a bus system, i.e. the way the CPU talks to the other stuff inside 474 your box. If you say Y here, the kernel will include drivers and 475 infrastructure code to support PCI bus devices. 476 477 CONFIG_PCI is needed for all JavaStation's (including MrCoffee), 478 CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC. 479 All of these platforms are extremely obscure, so say N if unsure. 480 481config PCI_DOMAINS 482 def_bool PCI if SPARC64 483 484config PCI_SYSCALL 485 def_bool PCI 486 487config PCIC_PCI 488 bool 489 depends on PCI && SPARC32 && !SPARC_LEON 490 default y 491 492config LEON_PCI 493 bool 494 depends on PCI && SPARC_LEON 495 default y 496 497config SPARC_GRPCI1 498 bool "GRPCI Host Bridge Support" 499 depends on LEON_PCI 500 default y 501 help 502 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI 503 PCI host controller is typically found in GRLIB SPARC32/LEON 504 systems. The driver has one property (all_pci_errors) controlled 505 from the bootloader that makes the GRPCI to generate interrupts 506 on detected PCI Parity and System errors. 507 508config GRPCI2 509 bool "GRPCI2 Host Bridge Support" 510 depends on LEON_PCI 511 default y 512 help 513 Say Y here to include the GRPCI2 Host Bridge Driver. 514 515source "drivers/pci/Kconfig" 516 517source "drivers/pcmcia/Kconfig" 518 519config SUN_OPENPROMFS 520 tristate "Openprom tree appears in /proc/openprom" 521 help 522 If you say Y, the OpenPROM device tree will be available as a 523 virtual file system, which you can mount to /proc/openprom by "mount 524 -t openpromfs none /proc/openprom". 525 526 To compile the /proc/openprom support as a module, choose M here: the 527 module will be called openpromfs. 528 529 Only choose N if you know in advance that you will not need to modify 530 OpenPROM settings on the running system. 531 532# Makefile helper 533config SPARC64_PCI 534 bool 535 default y 536 depends on SPARC64 && PCI 537 538endmenu 539 540menu "Executable file formats" 541 542source "fs/Kconfig.binfmt" 543 544config COMPAT 545 bool 546 depends on SPARC64 547 default y 548 select COMPAT_BINFMT_ELF 549 select HAVE_UID16 550 select ARCH_WANT_OLD_COMPAT_IPC 551 select COMPAT_OLD_SIGACTION 552 553config SYSVIPC_COMPAT 554 bool 555 depends on COMPAT && SYSVIPC 556 default y 557 558config KEYS_COMPAT 559 def_bool y if COMPAT && KEYS 560 561endmenu 562 563source "net/Kconfig" 564 565source "drivers/Kconfig" 566 567source "drivers/sbus/char/Kconfig" 568 569source "fs/Kconfig" 570 571source "arch/sparc/Kconfig.debug" 572 573source "security/Kconfig" 574 575source "crypto/Kconfig" 576 577source "lib/Kconfig" 578