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_32BIT_OFF_T 53 select ARCH_HAS_SYNC_DMA_FOR_CPU 54 select GENERIC_ATOMIC64 55 select CLZ_TAB 56 select HAVE_UID16 57 select OLD_SIGACTION 58 59config SPARC64 60 def_bool 64BIT 61 select HAVE_FUNCTION_TRACER 62 select HAVE_FUNCTION_GRAPH_TRACER 63 select HAVE_KRETPROBES 64 select HAVE_KPROBES 65 select HAVE_RCU_TABLE_FREE if SMP 66 select HAVE_RCU_TABLE_NO_INVALIDATE if HAVE_RCU_TABLE_FREE 67 select HAVE_MEMBLOCK_NODE_MAP 68 select HAVE_ARCH_TRANSPARENT_HUGEPAGE 69 select HAVE_DYNAMIC_FTRACE 70 select HAVE_FTRACE_MCOUNT_RECORD 71 select HAVE_SYSCALL_TRACEPOINTS 72 select HAVE_CONTEXT_TRACKING 73 select HAVE_DEBUG_KMEMLEAK 74 select IOMMU_HELPER 75 select SPARSE_IRQ 76 select RTC_DRV_CMOS 77 select RTC_DRV_BQ4802 78 select RTC_DRV_SUN4V 79 select RTC_DRV_STARFIRE 80 select HAVE_PERF_EVENTS 81 select PERF_USE_VMALLOC 82 select IRQ_PREFLOW_FASTEOI 83 select ARCH_HAVE_NMI_SAFE_CMPXCHG 84 select HAVE_C_RECORDMCOUNT 85 select HAVE_ARCH_AUDITSYSCALL 86 select ARCH_SUPPORTS_ATOMIC_RMW 87 select HAVE_NMI 88 select HAVE_REGS_AND_STACK_ACCESS_API 89 select ARCH_USE_QUEUED_RWLOCKS 90 select ARCH_USE_QUEUED_SPINLOCKS 91 select GENERIC_TIME_VSYSCALL 92 select ARCH_CLOCKSOURCE_DATA 93 select ARCH_HAS_PTE_SPECIAL 94 select PCI_DOMAINS if PCI 95 96config ARCH_DEFCONFIG 97 string 98 default "arch/sparc/configs/sparc32_defconfig" if SPARC32 99 default "arch/sparc/configs/sparc64_defconfig" if SPARC64 100 101config ARCH_PROC_KCORE_TEXT 102 def_bool y 103 104config CPU_BIG_ENDIAN 105 def_bool y 106 107config ARCH_ATU 108 bool 109 default y if SPARC64 110 111config STACKTRACE_SUPPORT 112 bool 113 default y if SPARC64 114 115config LOCKDEP_SUPPORT 116 bool 117 default y if SPARC64 118 119config ARCH_HIBERNATION_POSSIBLE 120 def_bool y if SPARC64 121 122config AUDIT_ARCH 123 bool 124 default y 125 126config HAVE_SETUP_PER_CPU_AREA 127 def_bool y if SPARC64 128 129config NEED_PER_CPU_EMBED_FIRST_CHUNK 130 def_bool y if SPARC64 131 132config NEED_PER_CPU_PAGE_FIRST_CHUNK 133 def_bool y if SPARC64 134 135config MMU 136 bool 137 default y 138 139config HIGHMEM 140 bool 141 default y if SPARC32 142 143config ZONE_DMA 144 bool 145 default y if SPARC32 146 147config GENERIC_ISA_DMA 148 bool 149 default y if SPARC32 150 151config ARCH_SUPPORTS_DEBUG_PAGEALLOC 152 def_bool y if SPARC64 153 154config PGTABLE_LEVELS 155 default 4 if 64BIT 156 default 3 157 158config ARCH_SUPPORTS_UPROBES 159 def_bool y if SPARC64 160 161menu "Processor type and features" 162 163config SMP 164 bool "Symmetric multi-processing support" 165 ---help--- 166 This enables support for systems with more than one CPU. If you have 167 a system with only one CPU, say N. If you have a system with more 168 than one CPU, say Y. 169 170 If you say N here, the kernel will run on uni- and multiprocessor 171 machines, but will use only one CPU of a multiprocessor machine. If 172 you say Y here, the kernel will run on many, but not all, 173 uniprocessor machines. On a uniprocessor machine, the kernel 174 will run faster if you say N here. 175 176 People using multiprocessor machines who say Y here should also say 177 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power 178 Management" code will be disabled if you say Y here. 179 180 See also <file:Documentation/lockup-watchdogs.txt> and the SMP-HOWTO 181 available at <http://www.tldp.org/docs.html#howto>. 182 183 If you don't know what to do here, say N. 184 185config NR_CPUS 186 int "Maximum number of CPUs" 187 depends on SMP 188 range 2 32 if SPARC32 189 range 2 4096 if SPARC64 190 default 32 if SPARC32 191 default 4096 if SPARC64 192 193source "kernel/Kconfig.hz" 194 195config GENERIC_HWEIGHT 196 bool 197 default y 198 199config GENERIC_CALIBRATE_DELAY 200 bool 201 default y 202 203config ARCH_MAY_HAVE_PC_FDC 204 bool 205 default y 206 207config EMULATED_CMPXCHG 208 bool 209 default y if SPARC32 210 help 211 Sparc32 does not have a CAS instruction like sparc64. cmpxchg() 212 is emulated, and therefore it is not completely atomic. 213 214# Makefile helpers 215config SPARC32_SMP 216 bool 217 default y 218 depends on SPARC32 && SMP 219 220config SPARC64_SMP 221 bool 222 default y 223 depends on SPARC64 && SMP 224 225config EARLYFB 226 bool "Support for early boot text console" 227 default y 228 depends on SPARC64 229 help 230 Say Y here to enable a faster early framebuffer boot console. 231 232config SECCOMP 233 bool "Enable seccomp to safely compute untrusted bytecode" 234 depends on SPARC64 && PROC_FS 235 default y 236 help 237 This kernel feature is useful for number crunching applications 238 that may need to compute untrusted bytecode during their 239 execution. By using pipes or other transports made available to 240 the process as file descriptors supporting the read/write 241 syscalls, it's possible to isolate those applications in 242 their own address space using seccomp. Once seccomp is 243 enabled via /proc/<pid>/seccomp, it cannot be disabled 244 and the task is only allowed to execute a few safe syscalls 245 defined by each seccomp mode. 246 247 If unsure, say Y. Only embedded should say N here. 248 249config HOTPLUG_CPU 250 bool "Support for hot-pluggable CPUs" 251 depends on SPARC64 && SMP 252 help 253 Say Y here to experiment with turning CPUs off and on. CPUs 254 can be controlled through /sys/devices/system/cpu/cpu#. 255 Say N if you want to disable CPU hotplug. 256 257if SPARC64 258source "drivers/cpufreq/Kconfig" 259endif 260 261config US3_MC 262 tristate "UltraSPARC-III Memory Controller driver" 263 depends on SPARC64 264 default y 265 help 266 This adds a driver for the UltraSPARC-III memory controller. 267 Loading this driver allows exact mnemonic strings to be 268 printed in the event of a memory error, so that the faulty DIMM 269 on the motherboard can be matched to the error. 270 271 If in doubt, say Y, as this information can be very useful. 272 273# Global things across all Sun machines. 274config GENERIC_LOCKBREAK 275 bool 276 default y 277 depends on SPARC64 && SMP && PREEMPT 278 279config NUMA 280 bool "NUMA support" 281 depends on SPARC64 && SMP 282 283config NODES_SHIFT 284 int "Maximum NUMA Nodes (as a power of 2)" 285 range 4 5 if SPARC64 286 default "5" 287 depends on NEED_MULTIPLE_NODES 288 help 289 Specify the maximum number of NUMA Nodes available on the target 290 system. Increases memory reserved to accommodate various tables. 291 292# Some NUMA nodes have memory ranges that span 293# other nodes. Even though a pfn is valid and 294# between a node's start and end pfns, it may not 295# reside on that node. See memmap_init_zone() 296# for details. 297config NODES_SPAN_OTHER_NODES 298 def_bool y 299 depends on NEED_MULTIPLE_NODES 300 301config ARCH_SELECT_MEMORY_MODEL 302 def_bool y if SPARC64 303 304config ARCH_SPARSEMEM_ENABLE 305 def_bool y if SPARC64 306 select SPARSEMEM_VMEMMAP_ENABLE 307 308config ARCH_SPARSEMEM_DEFAULT 309 def_bool y if SPARC64 310 311config FORCE_MAX_ZONEORDER 312 int "Maximum zone order" 313 default "13" 314 help 315 The kernel memory allocator divides physically contiguous memory 316 blocks into "zones", where each zone is a power of two number of 317 pages. This option selects the largest power of two that the kernel 318 keeps in the memory allocator. If you need to allocate very large 319 blocks of physically contiguous memory, then you may need to 320 increase this value. 321 322 This config option is actually maximum order plus one. For example, 323 a value of 13 means that the largest free memory block is 2^12 pages. 324 325if SPARC64 326source "kernel/power/Kconfig" 327endif 328 329config SCHED_SMT 330 bool "SMT (Hyperthreading) scheduler support" 331 depends on SPARC64 && SMP 332 default y 333 help 334 SMT scheduler support improves the CPU scheduler's decision making 335 when dealing with SPARC cpus at a cost of slightly increased overhead 336 in some places. If unsure say N here. 337 338config SCHED_MC 339 bool "Multi-core scheduler support" 340 depends on SPARC64 && SMP 341 default y 342 help 343 Multi-core scheduler support improves the CPU scheduler's decision 344 making when dealing with multi-core CPU chips at a cost of slightly 345 increased overhead in some places. If unsure say N here. 346 347config CMDLINE_BOOL 348 bool "Default bootloader kernel arguments" 349 depends on SPARC64 350 351config CMDLINE 352 string "Initial kernel command string" 353 depends on CMDLINE_BOOL 354 default "console=ttyS0,9600 root=/dev/sda1" 355 help 356 Say Y here if you want to be able to pass default arguments to 357 the kernel. This will be overridden by the bootloader, if you 358 use one (such as SILO). This is most useful if you want to boot 359 a kernel from TFTP, and want default options to be available 360 with having them passed on the command line. 361 362 NOTE: This option WILL override the PROM bootargs setting! 363 364config SUN_PM 365 bool 366 default y if SPARC32 367 help 368 Enable power management and CPU standby features on supported 369 SPARC platforms. 370 371config SPARC_LED 372 tristate "Sun4m LED driver" 373 depends on SPARC32 374 help 375 This driver toggles the front-panel LED on sun4m systems 376 in a user-specifiable manner. Its state can be probed 377 by reading /proc/led and its blinking mode can be changed 378 via writes to /proc/led 379 380config SERIAL_CONSOLE 381 bool 382 depends on SPARC32 383 default y 384 ---help--- 385 If you say Y here, it will be possible to use a serial port as the 386 system console (the system console is the device which receives all 387 kernel messages and warnings and which allows logins in single user 388 mode). This could be useful if some terminal or printer is connected 389 to that serial port. 390 391 Even if you say Y here, the currently visible virtual console 392 (/dev/tty0) will still be used as the system console by default, but 393 you can alter that using a kernel command line option such as 394 "console=ttyS1". (Try "man bootparam" or see the documentation of 395 your boot loader (silo) about how to pass options to the kernel at 396 boot time.) 397 398 If you don't have a graphics card installed and you say Y here, the 399 kernel will automatically use the first serial line, /dev/ttyS0, as 400 system console. 401 402 If unsure, say N. 403 404config SPARC_LEON 405 bool "Sparc Leon processor family" 406 depends on SPARC32 407 select USB_EHCI_BIG_ENDIAN_MMIO 408 select USB_EHCI_BIG_ENDIAN_DESC 409 select USB_UHCI_BIG_ENDIAN_MMIO 410 select USB_UHCI_BIG_ENDIAN_DESC 411 ---help--- 412 If you say Y here if you are running on a SPARC-LEON processor. 413 The LEON processor is a synthesizable VHDL model of the 414 SPARC-v8 standard. LEON is part of the GRLIB collection of 415 IP cores that are distributed under GPL. GRLIB can be downloaded 416 from www.gaisler.com. You can download a sparc-linux cross-compilation 417 toolchain at www.gaisler.com. 418 419if SPARC_LEON 420menu "U-Boot options" 421 422config UBOOT_LOAD_ADDR 423 hex "uImage Load Address" 424 default 0x40004000 425 ---help--- 426 U-Boot kernel load address, the address in physical address space 427 where u-boot will place the Linux kernel before booting it. 428 This address is normally the base address of main memory + 0x4000. 429 430config UBOOT_FLASH_ADDR 431 hex "uImage.o Load Address" 432 default 0x00080000 433 ---help--- 434 Optional setting only affecting the uImage.o ELF-image used to 435 download the uImage file to the target using a ELF-loader other than 436 U-Boot. It may for example be used to download an uImage to FLASH with 437 the GRMON utility before even starting u-boot. 438 439config UBOOT_ENTRY_ADDR 440 hex "uImage Entry Address" 441 default 0xf0004000 442 ---help--- 443 Do not change this unless you know what you're doing. This is 444 hardcoded by the SPARC32 and LEON port. 445 446 This is the virtual address u-boot jumps to when booting the Linux 447 Kernel. 448 449endmenu 450endif 451 452endmenu 453 454menu "Bus options (PCI etc.)" 455config SBUS 456 bool 457 default y 458 459config SBUSCHAR 460 bool 461 default y 462 463config SUN_LDOMS 464 bool "Sun Logical Domains support" 465 depends on SPARC64 466 help 467 Say Y here is you want to support virtual devices via 468 Logical Domains. 469 470config PCIC_PCI 471 bool 472 depends on PCI && SPARC32 && !SPARC_LEON 473 default y 474 475config LEON_PCI 476 bool 477 depends on PCI && SPARC_LEON 478 default y 479 480config SPARC_GRPCI1 481 bool "GRPCI Host Bridge Support" 482 depends on LEON_PCI 483 default y 484 help 485 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI 486 PCI host controller is typically found in GRLIB SPARC32/LEON 487 systems. The driver has one property (all_pci_errors) controlled 488 from the bootloader that makes the GRPCI to generate interrupts 489 on detected PCI Parity and System errors. 490 491config SPARC_GRPCI2 492 bool "GRPCI2 Host Bridge Support" 493 depends on LEON_PCI 494 default y 495 help 496 Say Y here to include the GRPCI2 Host Bridge Driver. 497 498config SUN_OPENPROMFS 499 tristate "Openprom tree appears in /proc/openprom" 500 help 501 If you say Y, the OpenPROM device tree will be available as a 502 virtual file system, which you can mount to /proc/openprom by "mount 503 -t openpromfs none /proc/openprom". 504 505 To compile the /proc/openprom support as a module, choose M here: the 506 module will be called openpromfs. 507 508 Only choose N if you know in advance that you will not need to modify 509 OpenPROM settings on the running system. 510 511# Makefile helpers 512config SPARC64_PCI 513 bool 514 default y 515 depends on SPARC64 && PCI 516 517config SPARC64_PCI_MSI 518 bool 519 default y 520 depends on SPARC64_PCI && PCI_MSI 521 522endmenu 523 524config COMPAT 525 bool 526 depends on SPARC64 527 default y 528 select COMPAT_BINFMT_ELF 529 select HAVE_UID16 530 select ARCH_WANT_OLD_COMPAT_IPC 531 select COMPAT_OLD_SIGACTION 532 533config SYSVIPC_COMPAT 534 bool 535 depends on COMPAT && SYSVIPC 536 default y 537 538source "drivers/sbus/char/Kconfig" 539