2 bool "64-bit kernel" if "$(ARCH)" = "sparc"
3 default "$(ARCH)" = "sparc64"
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.
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
15 select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI
16 select ARCH_MIGHT_HAVE_PC_SERIO
21 select HAVE_ARCH_KGDB if !SMP || SPARC64
22 select HAVE_ARCH_TRACEHOOK
23 select HAVE_EXIT_THREAD
25 select SYSCTL_EXCEPTION_TRACE
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
45 select CPU_NO_EFFICIENT_FFS
46 select LOCKDEP_SMALL if LOCKDEP
47 select NEED_DMA_MAP_STATE
48 select NEED_SG_DMA_LENGTH
52 select ARCH_32BIT_OFF_T
53 select ARCH_HAS_SYNC_DMA_FOR_CPU
54 select GENERIC_ATOMIC64
61 select HAVE_FUNCTION_TRACER
62 select HAVE_FUNCTION_GRAPH_TRACER
63 select HAVE_KRETPROBES
65 select HAVE_RCU_TABLE_FREE if SMP
66 select HAVE_MEMBLOCK_NODE_MAP
67 select HAVE_ARCH_TRANSPARENT_HUGEPAGE
68 select HAVE_DYNAMIC_FTRACE
69 select HAVE_FTRACE_MCOUNT_RECORD
70 select HAVE_SYSCALL_TRACEPOINTS
71 select HAVE_CONTEXT_TRACKING
72 select HAVE_DEBUG_KMEMLEAK
78 select RTC_DRV_STARFIRE
79 select HAVE_PERF_EVENTS
80 select PERF_USE_VMALLOC
81 select IRQ_PREFLOW_FASTEOI
82 select ARCH_HAVE_NMI_SAFE_CMPXCHG
83 select HAVE_C_RECORDMCOUNT
84 select HAVE_ARCH_AUDITSYSCALL
85 select ARCH_SUPPORTS_ATOMIC_RMW
87 select HAVE_REGS_AND_STACK_ACCESS_API
88 select ARCH_USE_QUEUED_RWLOCKS
89 select ARCH_USE_QUEUED_SPINLOCKS
90 select GENERIC_TIME_VSYSCALL
91 select ARCH_CLOCKSOURCE_DATA
92 select ARCH_HAS_PTE_SPECIAL
93 select PCI_DOMAINS if PCI
97 default "arch/sparc/configs/sparc32_defconfig" if SPARC32
98 default "arch/sparc/configs/sparc64_defconfig" if SPARC64
100 config ARCH_PROC_KCORE_TEXT
103 config CPU_BIG_ENDIAN
110 config STACKTRACE_SUPPORT
114 config LOCKDEP_SUPPORT
118 config ARCH_HIBERNATION_POSSIBLE
119 def_bool y if SPARC64
125 config HAVE_SETUP_PER_CPU_AREA
126 def_bool y if SPARC64
128 config NEED_PER_CPU_EMBED_FIRST_CHUNK
129 def_bool y if SPARC64
131 config NEED_PER_CPU_PAGE_FIRST_CHUNK
132 def_bool y if SPARC64
146 config GENERIC_ISA_DMA
150 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
151 def_bool y if SPARC64
153 config PGTABLE_LEVELS
157 config ARCH_SUPPORTS_UPROBES
158 def_bool y if SPARC64
160 menu "Processor type and features"
163 bool "Symmetric multi-processing support"
165 This enables support for systems with more than one CPU. If you have
166 a system with only one CPU, say N. If you have a system with more
169 If you say N here, the kernel will run on uni- and multiprocessor
170 machines, but will use only one CPU of a multiprocessor machine. If
171 you say Y here, the kernel will run on many, but not all,
172 uniprocessor machines. On a uniprocessor machine, the kernel
173 will run faster if you say N here.
175 People using multiprocessor machines who say Y here should also say
176 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
177 Management" code will be disabled if you say Y here.
179 See also <file:Documentation/lockup-watchdogs.txt> and the SMP-HOWTO
180 available at <http://www.tldp.org/docs.html#howto>.
182 If you don't know what to do here, say N.
185 int "Maximum number of CPUs"
187 range 2 32 if SPARC32
188 range 2 4096 if SPARC64
189 default 32 if SPARC32
190 default 4096 if SPARC64
192 source "kernel/Kconfig.hz"
194 config RWSEM_GENERIC_SPINLOCK
198 config RWSEM_XCHGADD_ALGORITHM
202 config GENERIC_HWEIGHT
206 config GENERIC_CALIBRATE_DELAY
210 config ARCH_MAY_HAVE_PC_FDC
214 config EMULATED_CMPXCHG
218 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
219 is emulated, and therefore it is not completely atomic.
225 depends on SPARC32 && SMP
230 depends on SPARC64 && SMP
233 bool "Support for early boot text console"
237 Say Y here to enable a faster early framebuffer boot console.
240 bool "Enable seccomp to safely compute untrusted bytecode"
241 depends on SPARC64 && PROC_FS
244 This kernel feature is useful for number crunching applications
245 that may need to compute untrusted bytecode during their
246 execution. By using pipes or other transports made available to
247 the process as file descriptors supporting the read/write
248 syscalls, it's possible to isolate those applications in
249 their own address space using seccomp. Once seccomp is
250 enabled via /proc/<pid>/seccomp, it cannot be disabled
251 and the task is only allowed to execute a few safe syscalls
252 defined by each seccomp mode.
254 If unsure, say Y. Only embedded should say N here.
257 bool "Support for hot-pluggable CPUs"
258 depends on SPARC64 && SMP
260 Say Y here to experiment with turning CPUs off and on. CPUs
261 can be controlled through /sys/devices/system/cpu/cpu#.
262 Say N if you want to disable CPU hotplug.
265 source "drivers/cpufreq/Kconfig"
269 tristate "UltraSPARC-III Memory Controller driver"
273 This adds a driver for the UltraSPARC-III memory controller.
274 Loading this driver allows exact mnemonic strings to be
275 printed in the event of a memory error, so that the faulty DIMM
276 on the motherboard can be matched to the error.
278 If in doubt, say Y, as this information can be very useful.
280 # Global things across all Sun machines.
281 config GENERIC_LOCKBREAK
284 depends on SPARC64 && SMP && PREEMPT
288 depends on SPARC64 && SMP
291 int "Maximum NUMA Nodes (as a power of 2)"
294 depends on NEED_MULTIPLE_NODES
296 Specify the maximum number of NUMA Nodes available on the target
297 system. Increases memory reserved to accommodate various tables.
299 # Some NUMA nodes have memory ranges that span
300 # other nodes. Even though a pfn is valid and
301 # between a node's start and end pfns, it may not
302 # reside on that node. See memmap_init_zone()
304 config NODES_SPAN_OTHER_NODES
306 depends on NEED_MULTIPLE_NODES
308 config ARCH_SELECT_MEMORY_MODEL
309 def_bool y if SPARC64
311 config ARCH_SPARSEMEM_ENABLE
312 def_bool y if SPARC64
313 select SPARSEMEM_VMEMMAP_ENABLE
315 config ARCH_SPARSEMEM_DEFAULT
316 def_bool y if SPARC64
318 config FORCE_MAX_ZONEORDER
319 int "Maximum zone order"
322 The kernel memory allocator divides physically contiguous memory
323 blocks into "zones", where each zone is a power of two number of
324 pages. This option selects the largest power of two that the kernel
325 keeps in the memory allocator. If you need to allocate very large
326 blocks of physically contiguous memory, then you may need to
329 This config option is actually maximum order plus one. For example,
330 a value of 13 means that the largest free memory block is 2^12 pages.
333 source "kernel/power/Kconfig"
337 bool "SMT (Hyperthreading) scheduler support"
338 depends on SPARC64 && SMP
341 SMT scheduler support improves the CPU scheduler's decision making
342 when dealing with SPARC cpus at a cost of slightly increased overhead
343 in some places. If unsure say N here.
346 bool "Multi-core scheduler support"
347 depends on SPARC64 && SMP
350 Multi-core scheduler support improves the CPU scheduler's decision
351 making when dealing with multi-core CPU chips at a cost of slightly
352 increased overhead in some places. If unsure say N here.
355 bool "Default bootloader kernel arguments"
359 string "Initial kernel command string"
360 depends on CMDLINE_BOOL
361 default "console=ttyS0,9600 root=/dev/sda1"
363 Say Y here if you want to be able to pass default arguments to
364 the kernel. This will be overridden by the bootloader, if you
365 use one (such as SILO). This is most useful if you want to boot
366 a kernel from TFTP, and want default options to be available
367 with having them passed on the command line.
369 NOTE: This option WILL override the PROM bootargs setting!
375 Enable power management and CPU standby features on supported
379 tristate "Sun4m LED driver"
382 This driver toggles the front-panel LED on sun4m systems
383 in a user-specifiable manner. Its state can be probed
384 by reading /proc/led and its blinking mode can be changed
385 via writes to /proc/led
387 config SERIAL_CONSOLE
392 If you say Y here, it will be possible to use a serial port as the
393 system console (the system console is the device which receives all
394 kernel messages and warnings and which allows logins in single user
395 mode). This could be useful if some terminal or printer is connected
398 Even if you say Y here, the currently visible virtual console
399 (/dev/tty0) will still be used as the system console by default, but
400 you can alter that using a kernel command line option such as
401 "console=ttyS1". (Try "man bootparam" or see the documentation of
402 your boot loader (silo) about how to pass options to the kernel at
405 If you don't have a graphics card installed and you say Y here, the
406 kernel will automatically use the first serial line, /dev/ttyS0, as
412 bool "Sparc Leon processor family"
414 select USB_EHCI_BIG_ENDIAN_MMIO
415 select USB_EHCI_BIG_ENDIAN_DESC
416 select USB_UHCI_BIG_ENDIAN_MMIO
417 select USB_UHCI_BIG_ENDIAN_DESC
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.
427 menu "U-Boot options"
429 config UBOOT_LOAD_ADDR
430 hex "uImage Load Address"
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.
437 config UBOOT_FLASH_ADDR
438 hex "uImage.o Load Address"
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.
446 config UBOOT_ENTRY_ADDR
447 hex "uImage Entry Address"
450 Do not change this unless you know what you're doing. This is
451 hardcoded by the SPARC32 and LEON port.
453 This is the virtual address u-boot jumps to when booting the Linux
461 menu "Bus options (PCI etc.)"
471 bool "Sun Logical Domains support"
474 Say Y here is you want to support virtual devices via
479 depends on PCI && SPARC32 && !SPARC_LEON
484 depends on PCI && SPARC_LEON
488 bool "GRPCI Host Bridge Support"
492 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
493 PCI host controller is typically found in GRLIB SPARC32/LEON
494 systems. The driver has one property (all_pci_errors) controlled
495 from the bootloader that makes the GRPCI to generate interrupts
496 on detected PCI Parity and System errors.
499 bool "GRPCI2 Host Bridge Support"
503 Say Y here to include the GRPCI2 Host Bridge Driver.
505 config SUN_OPENPROMFS
506 tristate "Openprom tree appears in /proc/openprom"
508 If you say Y, the OpenPROM device tree will be available as a
509 virtual file system, which you can mount to /proc/openprom by "mount
510 -t openpromfs none /proc/openprom".
512 To compile the /proc/openprom support as a module, choose M here: the
513 module will be called openpromfs.
515 Only choose N if you know in advance that you will not need to modify
516 OpenPROM settings on the running system.
522 depends on SPARC64 && PCI
524 config SPARC64_PCI_MSI
527 depends on SPARC64_PCI && PCI_MSI
535 select COMPAT_BINFMT_ELF
537 select ARCH_WANT_OLD_COMPAT_IPC
538 select COMPAT_OLD_SIGACTION
540 config SYSVIPC_COMPAT
542 depends on COMPAT && SYSVIPC
545 source "drivers/sbus/char/Kconfig"