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 HAVE_PCI 25 select SYSCTL_EXCEPTION_TRACE 26 select RTC_CLASS 27 select RTC_DRV_M48T59 28 select RTC_SYSTOHC 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 if SPARC32 35 select HAVE_EBPF_JIT if SPARC64 36 select HAVE_DEBUG_BUGVERBOSE 37 select GENERIC_SMP_IDLE_THREAD 38 select GENERIC_CLOCKEVENTS 39 select GENERIC_STRNCPY_FROM_USER 40 select GENERIC_STRNLEN_USER 41 select MODULES_USE_ELF_RELA 42 select PCI_SYSCALL if PCI 43 select ODD_RT_SIGACTION 44 select OLD_SIGSUSPEND 45 select CPU_NO_EFFICIENT_FFS 46 select LOCKDEP_SMALL if LOCKDEP 47 select NEED_DMA_MAP_STATE 48 select NEED_SG_DMA_LENGTH 49 50config SPARC32 51 def_bool !64BIT 52 select ARCH_HAS_SYNC_DMA_FOR_CPU 53 select GENERIC_ATOMIC64 54 select CLZ_TAB 55 select HAVE_UID16 56 select OLD_SIGACTION 57 58config SPARC64 59 def_bool 64BIT 60 select HAVE_FUNCTION_TRACER 61 select HAVE_FUNCTION_GRAPH_TRACER 62 select HAVE_KRETPROBES 63 select HAVE_KPROBES 64 select HAVE_RCU_TABLE_FREE if SMP 65 select HAVE_MEMBLOCK_NODE_MAP 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_CONTEXT_TRACKING 71 select HAVE_DEBUG_KMEMLEAK 72 select IOMMU_HELPER 73 select SPARSE_IRQ 74 select RTC_DRV_CMOS 75 select RTC_DRV_BQ4802 76 select RTC_DRV_SUN4V 77 select RTC_DRV_STARFIRE 78 select HAVE_PERF_EVENTS 79 select PERF_USE_VMALLOC 80 select IRQ_PREFLOW_FASTEOI 81 select ARCH_HAVE_NMI_SAFE_CMPXCHG 82 select HAVE_C_RECORDMCOUNT 83 select HAVE_ARCH_AUDITSYSCALL 84 select ARCH_SUPPORTS_ATOMIC_RMW 85 select HAVE_NMI 86 select HAVE_REGS_AND_STACK_ACCESS_API 87 select ARCH_USE_QUEUED_RWLOCKS 88 select ARCH_USE_QUEUED_SPINLOCKS 89 select GENERIC_TIME_VSYSCALL 90 select ARCH_CLOCKSOURCE_DATA 91 select ARCH_HAS_PTE_SPECIAL 92 select PCI_DOMAINS if PCI 93 94config ARCH_DEFCONFIG 95 string 96 default "arch/sparc/configs/sparc32_defconfig" if SPARC32 97 default "arch/sparc/configs/sparc64_defconfig" if SPARC64 98 99config ARCH_PROC_KCORE_TEXT 100 def_bool y 101 102config CPU_BIG_ENDIAN 103 def_bool y 104 105config ARCH_ATU 106 bool 107 default y if SPARC64 108 109config STACKTRACE_SUPPORT 110 bool 111 default y if SPARC64 112 113config LOCKDEP_SUPPORT 114 bool 115 default y if SPARC64 116 117config ARCH_HIBERNATION_POSSIBLE 118 def_bool y if SPARC64 119 120config AUDIT_ARCH 121 bool 122 default y 123 124config HAVE_SETUP_PER_CPU_AREA 125 def_bool y if SPARC64 126 127config NEED_PER_CPU_EMBED_FIRST_CHUNK 128 def_bool y if SPARC64 129 130config NEED_PER_CPU_PAGE_FIRST_CHUNK 131 def_bool y if SPARC64 132 133config MMU 134 bool 135 default y 136 137config HIGHMEM 138 bool 139 default y if SPARC32 140 141config ZONE_DMA 142 bool 143 default y if SPARC32 144 145config GENERIC_ISA_DMA 146 bool 147 default y if SPARC32 148 149config ARCH_SUPPORTS_DEBUG_PAGEALLOC 150 def_bool y if SPARC64 151 152config PGTABLE_LEVELS 153 default 4 if 64BIT 154 default 3 155 156config ARCH_SUPPORTS_UPROBES 157 def_bool y if SPARC64 158 159menu "Processor type and features" 160 161config SMP 162 bool "Symmetric multi-processing support" 163 ---help--- 164 This enables support for systems with more than one CPU. If you have 165 a system with only one CPU, say N. If you have a system with more 166 than one CPU, say Y. 167 168 If you say N here, the kernel will run on uni- and multiprocessor 169 machines, but will use only one CPU of a multiprocessor machine. If 170 you say Y here, the kernel will run on many, but not all, 171 uniprocessor machines. On a uniprocessor machine, the kernel 172 will run faster if you say N here. 173 174 People using multiprocessor machines who say Y here should also say 175 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power 176 Management" code will be disabled if you say Y here. 177 178 See also <file:Documentation/lockup-watchdogs.txt> and the SMP-HOWTO 179 available at <http://www.tldp.org/docs.html#howto>. 180 181 If you don't know what to do here, say N. 182 183config NR_CPUS 184 int "Maximum number of CPUs" 185 depends on SMP 186 range 2 32 if SPARC32 187 range 2 4096 if SPARC64 188 default 32 if SPARC32 189 default 4096 if SPARC64 190 191source "kernel/Kconfig.hz" 192 193config RWSEM_GENERIC_SPINLOCK 194 bool 195 default y if SPARC32 196 197config RWSEM_XCHGADD_ALGORITHM 198 bool 199 default y if SPARC64 200 201config GENERIC_HWEIGHT 202 bool 203 default y 204 205config GENERIC_CALIBRATE_DELAY 206 bool 207 default y 208 209config ARCH_MAY_HAVE_PC_FDC 210 bool 211 default y 212 213config EMULATED_CMPXCHG 214 bool 215 default y if SPARC32 216 help 217 Sparc32 does not have a CAS instruction like sparc64. cmpxchg() 218 is emulated, and therefore it is not completely atomic. 219 220# Makefile helpers 221config SPARC32_SMP 222 bool 223 default y 224 depends on SPARC32 && SMP 225 226config SPARC64_SMP 227 bool 228 default y 229 depends on SPARC64 && SMP 230 231config EARLYFB 232 bool "Support for early boot text console" 233 default y 234 depends on SPARC64 235 help 236 Say Y here to enable a faster early framebuffer boot console. 237 238config SECCOMP 239 bool "Enable seccomp to safely compute untrusted bytecode" 240 depends on SPARC64 && PROC_FS 241 default y 242 help 243 This kernel feature is useful for number crunching applications 244 that may need to compute untrusted bytecode during their 245 execution. By using pipes or other transports made available to 246 the process as file descriptors supporting the read/write 247 syscalls, it's possible to isolate those applications in 248 their own address space using seccomp. Once seccomp is 249 enabled via /proc/<pid>/seccomp, it cannot be disabled 250 and the task is only allowed to execute a few safe syscalls 251 defined by each seccomp mode. 252 253 If unsure, say Y. Only embedded should say N here. 254 255config HOTPLUG_CPU 256 bool "Support for hot-pluggable CPUs" 257 depends on SPARC64 && SMP 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" 265endif 266 267config US3_MC 268 tristate "UltraSPARC-III Memory Controller driver" 269 depends on SPARC64 270 default y 271 help 272 This adds a driver for the UltraSPARC-III memory controller. 273 Loading this driver allows exact mnemonic strings to be 274 printed in the event of a memory error, so that the faulty DIMM 275 on the motherboard can be matched to the error. 276 277 If in doubt, say Y, as this information can be very useful. 278 279# Global things across all Sun machines. 280config GENERIC_LOCKBREAK 281 bool 282 default y 283 depends on SPARC64 && SMP && PREEMPT 284 285config NUMA 286 bool "NUMA support" 287 depends on SPARC64 && SMP 288 289config NODES_SHIFT 290 int "Maximum NUMA Nodes (as a power of 2)" 291 range 4 5 if SPARC64 292 default "5" 293 depends on NEED_MULTIPLE_NODES 294 help 295 Specify the maximum number of NUMA Nodes available on the target 296 system. Increases memory reserved to accommodate various tables. 297 298# Some NUMA nodes have memory ranges that span 299# other nodes. Even though a pfn is valid and 300# between a node's start and end pfns, it may not 301# reside on that node. See memmap_init_zone() 302# for details. 303config NODES_SPAN_OTHER_NODES 304 def_bool y 305 depends on NEED_MULTIPLE_NODES 306 307config ARCH_SELECT_MEMORY_MODEL 308 def_bool y if SPARC64 309 310config ARCH_SPARSEMEM_ENABLE 311 def_bool y if SPARC64 312 select SPARSEMEM_VMEMMAP_ENABLE 313 314config ARCH_SPARSEMEM_DEFAULT 315 def_bool y if SPARC64 316 317config FORCE_MAX_ZONEORDER 318 int "Maximum zone order" 319 default "13" 320 help 321 The kernel memory allocator divides physically contiguous memory 322 blocks into "zones", where each zone is a power of two number of 323 pages. This option selects the largest power of two that the kernel 324 keeps in the memory allocator. If you need to allocate very large 325 blocks of physically contiguous memory, then you may need to 326 increase this value. 327 328 This config option is actually maximum order plus one. For example, 329 a value of 13 means that the largest free memory block is 2^12 pages. 330 331if SPARC64 332source "kernel/power/Kconfig" 333endif 334 335config SCHED_SMT 336 bool "SMT (Hyperthreading) scheduler support" 337 depends on SPARC64 && SMP 338 default y 339 help 340 SMT scheduler support improves the CPU scheduler's decision making 341 when dealing with SPARC cpus at a cost of slightly increased overhead 342 in some places. If unsure say N here. 343 344config SCHED_MC 345 bool "Multi-core scheduler support" 346 depends on SPARC64 && SMP 347 default y 348 help 349 Multi-core scheduler support improves the CPU scheduler's decision 350 making when dealing with multi-core CPU chips at a cost of slightly 351 increased overhead in some places. If unsure say N here. 352 353config CMDLINE_BOOL 354 bool "Default bootloader kernel arguments" 355 depends on SPARC64 356 357config CMDLINE 358 string "Initial kernel command string" 359 depends on CMDLINE_BOOL 360 default "console=ttyS0,9600 root=/dev/sda1" 361 help 362 Say Y here if you want to be able to pass default arguments to 363 the kernel. This will be overridden by the bootloader, if you 364 use one (such as SILO). This is most useful if you want to boot 365 a kernel from TFTP, and want default options to be available 366 with having them passed on the command line. 367 368 NOTE: This option WILL override the PROM bootargs setting! 369 370config SUN_PM 371 bool 372 default y if SPARC32 373 help 374 Enable power management and CPU standby features on supported 375 SPARC platforms. 376 377config SPARC_LED 378 tristate "Sun4m LED driver" 379 depends on SPARC32 380 help 381 This driver toggles the front-panel LED on sun4m systems 382 in a user-specifiable manner. Its state can be probed 383 by reading /proc/led and its blinking mode can be changed 384 via writes to /proc/led 385 386config SERIAL_CONSOLE 387 bool 388 depends on SPARC32 389 default y 390 ---help--- 391 If you say Y here, it will be possible to use a serial port as the 392 system console (the system console is the device which receives all 393 kernel messages and warnings and which allows logins in single user 394 mode). This could be useful if some terminal or printer is connected 395 to that serial port. 396 397 Even if you say Y here, the currently visible virtual console 398 (/dev/tty0) will still be used as the system console by default, but 399 you can alter that using a kernel command line option such as 400 "console=ttyS1". (Try "man bootparam" or see the documentation of 401 your boot loader (silo) about how to pass options to the kernel at 402 boot time.) 403 404 If you don't have a graphics card installed and you say Y here, the 405 kernel will automatically use the first serial line, /dev/ttyS0, as 406 system console. 407 408 If unsure, say N. 409 410config SPARC_LEON 411 bool "Sparc Leon processor family" 412 depends on SPARC32 413 select USB_EHCI_BIG_ENDIAN_MMIO 414 select USB_EHCI_BIG_ENDIAN_DESC 415 select USB_UHCI_BIG_ENDIAN_MMIO 416 select USB_UHCI_BIG_ENDIAN_DESC 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 PCIC_PCI 477 bool 478 depends on PCI && SPARC32 && !SPARC_LEON 479 default y 480 481config LEON_PCI 482 bool 483 depends on PCI && SPARC_LEON 484 default y 485 486config SPARC_GRPCI1 487 bool "GRPCI Host Bridge Support" 488 depends on LEON_PCI 489 default y 490 help 491 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI 492 PCI host controller is typically found in GRLIB SPARC32/LEON 493 systems. The driver has one property (all_pci_errors) controlled 494 from the bootloader that makes the GRPCI to generate interrupts 495 on detected PCI Parity and System errors. 496 497config SPARC_GRPCI2 498 bool "GRPCI2 Host Bridge Support" 499 depends on LEON_PCI 500 default y 501 help 502 Say Y here to include the GRPCI2 Host Bridge Driver. 503 504config SUN_OPENPROMFS 505 tristate "Openprom tree appears in /proc/openprom" 506 help 507 If you say Y, the OpenPROM device tree will be available as a 508 virtual file system, which you can mount to /proc/openprom by "mount 509 -t openpromfs none /proc/openprom". 510 511 To compile the /proc/openprom support as a module, choose M here: the 512 module will be called openpromfs. 513 514 Only choose N if you know in advance that you will not need to modify 515 OpenPROM settings on the running system. 516 517# Makefile helpers 518config SPARC64_PCI 519 bool 520 default y 521 depends on SPARC64 && PCI 522 523config SPARC64_PCI_MSI 524 bool 525 default y 526 depends on SPARC64_PCI && PCI_MSI 527 528endmenu 529 530config COMPAT 531 bool 532 depends on SPARC64 533 default y 534 select COMPAT_BINFMT_ELF 535 select HAVE_UID16 536 select ARCH_WANT_OLD_COMPAT_IPC 537 select COMPAT_OLD_SIGACTION 538 539config SYSVIPC_COMPAT 540 bool 541 depends on COMPAT && SYSVIPC 542 default y 543 544source "drivers/sbus/char/Kconfig" 545