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 select ARCH_HAS_GIGANTIC_PAGE 96 97config ARCH_DEFCONFIG 98 string 99 default "arch/sparc/configs/sparc32_defconfig" if SPARC32 100 default "arch/sparc/configs/sparc64_defconfig" if SPARC64 101 102config ARCH_PROC_KCORE_TEXT 103 def_bool y 104 105config CPU_BIG_ENDIAN 106 def_bool y 107 108config ARCH_ATU 109 bool 110 default y if SPARC64 111 112config STACKTRACE_SUPPORT 113 bool 114 default y if SPARC64 115 116config LOCKDEP_SUPPORT 117 bool 118 default y if SPARC64 119 120config ARCH_HIBERNATION_POSSIBLE 121 def_bool y if SPARC64 122 123config AUDIT_ARCH 124 bool 125 default y 126 127config HAVE_SETUP_PER_CPU_AREA 128 def_bool y if SPARC64 129 130config NEED_PER_CPU_EMBED_FIRST_CHUNK 131 def_bool y if SPARC64 132 133config NEED_PER_CPU_PAGE_FIRST_CHUNK 134 def_bool y if SPARC64 135 136config MMU 137 bool 138 default y 139 140config HIGHMEM 141 bool 142 default y if SPARC32 143 144config ZONE_DMA 145 bool 146 default y if SPARC32 147 148config GENERIC_ISA_DMA 149 bool 150 default y if SPARC32 151 152config ARCH_SUPPORTS_DEBUG_PAGEALLOC 153 def_bool y if SPARC64 154 155config PGTABLE_LEVELS 156 default 4 if 64BIT 157 default 3 158 159config ARCH_SUPPORTS_UPROBES 160 def_bool y if SPARC64 161 162menu "Processor type and features" 163 164config SMP 165 bool "Symmetric multi-processing support" 166 ---help--- 167 This enables support for systems with more than one CPU. If you have 168 a system with only one CPU, say N. If you have a system with more 169 than one CPU, say Y. 170 171 If you say N here, the kernel will run on uni- and multiprocessor 172 machines, but will use only one CPU of a multiprocessor machine. If 173 you say Y here, the kernel will run on many, but not all, 174 uniprocessor machines. On a uniprocessor machine, the kernel 175 will run faster if you say N here. 176 177 People using multiprocessor machines who say Y here should also say 178 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power 179 Management" code will be disabled if you say Y here. 180 181 See also <file:Documentation/lockup-watchdogs.txt> and the SMP-HOWTO 182 available at <http://www.tldp.org/docs.html#howto>. 183 184 If you don't know what to do here, say N. 185 186config NR_CPUS 187 int "Maximum number of CPUs" 188 depends on SMP 189 range 2 32 if SPARC32 190 range 2 4096 if SPARC64 191 default 32 if SPARC32 192 default 4096 if SPARC64 193 194source "kernel/Kconfig.hz" 195 196config GENERIC_HWEIGHT 197 bool 198 default y 199 200config GENERIC_CALIBRATE_DELAY 201 bool 202 default y 203 204config ARCH_MAY_HAVE_PC_FDC 205 bool 206 default y 207 208config EMULATED_CMPXCHG 209 bool 210 default y if SPARC32 211 help 212 Sparc32 does not have a CAS instruction like sparc64. cmpxchg() 213 is emulated, and therefore it is not completely atomic. 214 215# Makefile helpers 216config SPARC32_SMP 217 bool 218 default y 219 depends on SPARC32 && SMP 220 221config SPARC64_SMP 222 bool 223 default y 224 depends on SPARC64 && SMP 225 226config EARLYFB 227 bool "Support for early boot text console" 228 default y 229 depends on SPARC64 230 help 231 Say Y here to enable a faster early framebuffer boot console. 232 233config SECCOMP 234 bool "Enable seccomp to safely compute untrusted bytecode" 235 depends on SPARC64 && PROC_FS 236 default y 237 help 238 This kernel feature is useful for number crunching applications 239 that may need to compute untrusted bytecode during their 240 execution. By using pipes or other transports made available to 241 the process as file descriptors supporting the read/write 242 syscalls, it's possible to isolate those applications in 243 their own address space using seccomp. Once seccomp is 244 enabled via /proc/<pid>/seccomp, it cannot be disabled 245 and the task is only allowed to execute a few safe syscalls 246 defined by each seccomp mode. 247 248 If unsure, say Y. Only embedded should say N here. 249 250config HOTPLUG_CPU 251 bool "Support for hot-pluggable CPUs" 252 depends on SPARC64 && SMP 253 help 254 Say Y here to experiment with turning CPUs off and on. CPUs 255 can be controlled through /sys/devices/system/cpu/cpu#. 256 Say N if you want to disable CPU hotplug. 257 258if SPARC64 259source "drivers/cpufreq/Kconfig" 260endif 261 262config US3_MC 263 tristate "UltraSPARC-III Memory Controller driver" 264 depends on SPARC64 265 default y 266 help 267 This adds a driver for the UltraSPARC-III memory controller. 268 Loading this driver allows exact mnemonic strings to be 269 printed in the event of a memory error, so that the faulty DIMM 270 on the motherboard can be matched to the error. 271 272 If in doubt, say Y, as this information can be very useful. 273 274# Global things across all Sun machines. 275config GENERIC_LOCKBREAK 276 bool 277 default y 278 depends on SPARC64 && SMP && PREEMPT 279 280config NUMA 281 bool "NUMA support" 282 depends on SPARC64 && SMP 283 284config NODES_SHIFT 285 int "Maximum NUMA Nodes (as a power of 2)" 286 range 4 5 if SPARC64 287 default "5" 288 depends on NEED_MULTIPLE_NODES 289 help 290 Specify the maximum number of NUMA Nodes available on the target 291 system. Increases memory reserved to accommodate various tables. 292 293# Some NUMA nodes have memory ranges that span 294# other nodes. Even though a pfn is valid and 295# between a node's start and end pfns, it may not 296# reside on that node. See memmap_init_zone() 297# for details. 298config NODES_SPAN_OTHER_NODES 299 def_bool y 300 depends on NEED_MULTIPLE_NODES 301 302config ARCH_SELECT_MEMORY_MODEL 303 def_bool y if SPARC64 304 305config ARCH_SPARSEMEM_ENABLE 306 def_bool y if SPARC64 307 select SPARSEMEM_VMEMMAP_ENABLE 308 309config ARCH_SPARSEMEM_DEFAULT 310 def_bool y if SPARC64 311 312config FORCE_MAX_ZONEORDER 313 int "Maximum zone order" 314 default "13" 315 help 316 The kernel memory allocator divides physically contiguous memory 317 blocks into "zones", where each zone is a power of two number of 318 pages. This option selects the largest power of two that the kernel 319 keeps in the memory allocator. If you need to allocate very large 320 blocks of physically contiguous memory, then you may need to 321 increase this value. 322 323 This config option is actually maximum order plus one. For example, 324 a value of 13 means that the largest free memory block is 2^12 pages. 325 326if SPARC64 327source "kernel/power/Kconfig" 328endif 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 348config CMDLINE_BOOL 349 bool "Default bootloader kernel arguments" 350 depends on SPARC64 351 352config CMDLINE 353 string "Initial kernel command string" 354 depends on CMDLINE_BOOL 355 default "console=ttyS0,9600 root=/dev/sda1" 356 help 357 Say Y here if you want to be able to pass default arguments to 358 the kernel. This will be overridden by the bootloader, if you 359 use one (such as SILO). This is most useful if you want to boot 360 a kernel from TFTP, and want default options to be available 361 with having them passed on the command line. 362 363 NOTE: This option WILL override the PROM bootargs setting! 364 365config SUN_PM 366 bool 367 default y if SPARC32 368 help 369 Enable power management and CPU standby features on supported 370 SPARC platforms. 371 372config SPARC_LED 373 tristate "Sun4m LED driver" 374 depends on SPARC32 375 help 376 This driver toggles the front-panel LED on sun4m systems 377 in a user-specifiable manner. Its state can be probed 378 by reading /proc/led and its blinking mode can be changed 379 via writes to /proc/led 380 381config SERIAL_CONSOLE 382 bool 383 depends on SPARC32 384 default y 385 ---help--- 386 If you say Y here, it will be possible to use a serial port as the 387 system console (the system console is the device which receives all 388 kernel messages and warnings and which allows logins in single user 389 mode). This could be useful if some terminal or printer is connected 390 to that serial port. 391 392 Even if you say Y here, the currently visible virtual console 393 (/dev/tty0) will still be used as the system console by default, but 394 you can alter that using a kernel command line option such as 395 "console=ttyS1". (Try "man bootparam" or see the documentation of 396 your boot loader (silo) about how to pass options to the kernel at 397 boot time.) 398 399 If you don't have a graphics card installed and you say Y here, the 400 kernel will automatically use the first serial line, /dev/ttyS0, as 401 system console. 402 403 If unsure, say N. 404 405config SPARC_LEON 406 bool "Sparc Leon processor family" 407 depends on SPARC32 408 select USB_EHCI_BIG_ENDIAN_MMIO 409 select USB_EHCI_BIG_ENDIAN_DESC 410 select USB_UHCI_BIG_ENDIAN_MMIO 411 select USB_UHCI_BIG_ENDIAN_DESC 412 ---help--- 413 If you say Y here if you are running on a SPARC-LEON processor. 414 The LEON processor is a synthesizable VHDL model of the 415 SPARC-v8 standard. LEON is part of the GRLIB collection of 416 IP cores that are distributed under GPL. GRLIB can be downloaded 417 from www.gaisler.com. You can download a sparc-linux cross-compilation 418 toolchain at www.gaisler.com. 419 420if SPARC_LEON 421menu "U-Boot options" 422 423config UBOOT_LOAD_ADDR 424 hex "uImage Load Address" 425 default 0x40004000 426 ---help--- 427 U-Boot kernel load address, the address in physical address space 428 where u-boot will place the Linux kernel before booting it. 429 This address is normally the base address of main memory + 0x4000. 430 431config UBOOT_FLASH_ADDR 432 hex "uImage.o Load Address" 433 default 0x00080000 434 ---help--- 435 Optional setting only affecting the uImage.o ELF-image used to 436 download the uImage file to the target using a ELF-loader other than 437 U-Boot. It may for example be used to download an uImage to FLASH with 438 the GRMON utility before even starting u-boot. 439 440config UBOOT_ENTRY_ADDR 441 hex "uImage Entry Address" 442 default 0xf0004000 443 ---help--- 444 Do not change this unless you know what you're doing. This is 445 hardcoded by the SPARC32 and LEON port. 446 447 This is the virtual address u-boot jumps to when booting the Linux 448 Kernel. 449 450endmenu 451endif 452 453endmenu 454 455menu "Bus options (PCI etc.)" 456config SBUS 457 bool 458 default y 459 460config SBUSCHAR 461 bool 462 default y 463 464config SUN_LDOMS 465 bool "Sun Logical Domains support" 466 depends on SPARC64 467 help 468 Say Y here is you want to support virtual devices via 469 Logical Domains. 470 471config PCIC_PCI 472 bool 473 depends on PCI && SPARC32 && !SPARC_LEON 474 default y 475 476config LEON_PCI 477 bool 478 depends on PCI && SPARC_LEON 479 default y 480 481config SPARC_GRPCI1 482 bool "GRPCI Host Bridge Support" 483 depends on LEON_PCI 484 default y 485 help 486 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI 487 PCI host controller is typically found in GRLIB SPARC32/LEON 488 systems. The driver has one property (all_pci_errors) controlled 489 from the bootloader that makes the GRPCI to generate interrupts 490 on detected PCI Parity and System errors. 491 492config SPARC_GRPCI2 493 bool "GRPCI2 Host Bridge Support" 494 depends on LEON_PCI 495 default y 496 help 497 Say Y here to include the GRPCI2 Host Bridge Driver. 498 499config SUN_OPENPROMFS 500 tristate "Openprom tree appears in /proc/openprom" 501 help 502 If you say Y, the OpenPROM device tree will be available as a 503 virtual file system, which you can mount to /proc/openprom by "mount 504 -t openpromfs none /proc/openprom". 505 506 To compile the /proc/openprom support as a module, choose M here: the 507 module will be called openpromfs. 508 509 Only choose N if you know in advance that you will not need to modify 510 OpenPROM settings on the running system. 511 512# Makefile helpers 513config SPARC64_PCI 514 bool 515 default y 516 depends on SPARC64 && PCI 517 518config SPARC64_PCI_MSI 519 bool 520 default y 521 depends on SPARC64_PCI && PCI_MSI 522 523endmenu 524 525config COMPAT 526 bool 527 depends on SPARC64 528 default y 529 select COMPAT_BINFMT_ELF 530 select HAVE_UID16 531 select ARCH_WANT_OLD_COMPAT_IPC 532 select COMPAT_OLD_SIGACTION 533 534config SYSVIPC_COMPAT 535 bool 536 depends on COMPAT && SYSVIPC 537 default y 538 539source "drivers/sbus/char/Kconfig" 540