1 # SPDX-License-Identifier: GPL-2.0-only
3 bool "64-bit kernel" if "$(ARCH)" = "sparc"
4 default "$(ARCH)" = "sparc64"
6 SPARC is a family of RISC microprocessors designed and marketed by
7 Sun Microsystems, incorporated. They are very widely found in Sun
8 workstations and clones.
10 Say yes to build a 64-bit kernel - formerly known as sparc64
11 Say no to build a 32-bit kernel - formerly known as sparc
16 select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI
17 select ARCH_MIGHT_HAVE_PC_SERIO
20 select HAVE_ASM_MODVERSIONS
23 select HAVE_ARCH_KGDB if !SMP || SPARC64
24 select HAVE_ARCH_TRACEHOOK
25 select HAVE_EXIT_THREAD
27 select SYSCTL_EXCEPTION_TRACE
31 select HAVE_ARCH_JUMP_LABEL if SPARC64
32 select HAVE_FAST_GUP if SPARC64
33 select GENERIC_IRQ_SHOW
34 select ARCH_WANT_IPC_PARSE_VERSION
35 select GENERIC_PCI_IOMAP
36 select HAVE_NMI_WATCHDOG if SPARC64
37 select HAVE_CBPF_JIT if SPARC32
38 select HAVE_EBPF_JIT if SPARC64
39 select HAVE_DEBUG_BUGVERBOSE
40 select GENERIC_SMP_IDLE_THREAD
41 select GENERIC_CLOCKEVENTS
42 select GENERIC_STRNCPY_FROM_USER
43 select GENERIC_STRNLEN_USER
44 select MODULES_USE_ELF_RELA
45 select PCI_SYSCALL if PCI
46 select ODD_RT_SIGACTION
48 select CPU_NO_EFFICIENT_FFS
49 select LOCKDEP_SMALL if LOCKDEP
50 select NEED_DMA_MAP_STATE
51 select NEED_SG_DMA_LENGTH
55 select ARCH_32BIT_OFF_T
56 select ARCH_HAS_SYNC_DMA_FOR_CPU
57 select GENERIC_ATOMIC64
64 select HAVE_FUNCTION_TRACER
65 select HAVE_FUNCTION_GRAPH_TRACER
66 select HAVE_KRETPROBES
68 select HAVE_RCU_TABLE_FREE if SMP
69 select HAVE_RCU_TABLE_NO_INVALIDATE if HAVE_RCU_TABLE_FREE
70 select HAVE_MEMBLOCK_NODE_MAP
71 select HAVE_ARCH_TRANSPARENT_HUGEPAGE
72 select HAVE_DYNAMIC_FTRACE
73 select HAVE_FTRACE_MCOUNT_RECORD
74 select HAVE_SYSCALL_TRACEPOINTS
75 select HAVE_CONTEXT_TRACKING
76 select HAVE_DEBUG_KMEMLEAK
82 select RTC_DRV_STARFIRE
83 select HAVE_PERF_EVENTS
84 select PERF_USE_VMALLOC
85 select IRQ_PREFLOW_FASTEOI
86 select ARCH_HAVE_NMI_SAFE_CMPXCHG
87 select HAVE_C_RECORDMCOUNT
88 select HAVE_ARCH_AUDITSYSCALL
89 select ARCH_SUPPORTS_ATOMIC_RMW
91 select HAVE_REGS_AND_STACK_ACCESS_API
92 select ARCH_USE_QUEUED_RWLOCKS
93 select ARCH_USE_QUEUED_SPINLOCKS
94 select GENERIC_TIME_VSYSCALL
95 select ARCH_CLOCKSOURCE_DATA
96 select ARCH_HAS_PTE_SPECIAL
97 select PCI_DOMAINS if PCI
98 select ARCH_HAS_GIGANTIC_PAGE
100 config ARCH_DEFCONFIG
102 default "arch/sparc/configs/sparc32_defconfig" if SPARC32
103 default "arch/sparc/configs/sparc64_defconfig" if SPARC64
105 config ARCH_PROC_KCORE_TEXT
108 config CPU_BIG_ENDIAN
115 config STACKTRACE_SUPPORT
119 config LOCKDEP_SUPPORT
123 config ARCH_HIBERNATION_POSSIBLE
124 def_bool y if SPARC64
130 config HAVE_SETUP_PER_CPU_AREA
131 def_bool y if SPARC64
133 config NEED_PER_CPU_EMBED_FIRST_CHUNK
134 def_bool y if SPARC64
136 config NEED_PER_CPU_PAGE_FIRST_CHUNK
137 def_bool y if SPARC64
151 config GENERIC_ISA_DMA
155 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
156 def_bool y if SPARC64
158 config PGTABLE_LEVELS
162 config ARCH_SUPPORTS_UPROBES
163 def_bool y if SPARC64
165 menu "Processor type and features"
168 bool "Symmetric multi-processing support"
170 This enables support for systems with more than one CPU. If you have
171 a system with only one CPU, say N. If you have a system with more
174 If you say N here, the kernel will run on uni- and multiprocessor
175 machines, but will use only one CPU of a multiprocessor machine. If
176 you say Y here, the kernel will run on many, but not all,
177 uniprocessor machines. On a uniprocessor machine, the kernel
178 will run faster if you say N here.
180 People using multiprocessor machines who say Y here should also say
181 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
182 Management" code will be disabled if you say Y here.
184 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
185 available at <http://www.tldp.org/docs.html#howto>.
187 If you don't know what to do here, say N.
190 int "Maximum number of CPUs"
192 range 2 32 if SPARC32
193 range 2 4096 if SPARC64
194 default 32 if SPARC32
195 default 4096 if SPARC64
197 source "kernel/Kconfig.hz"
199 config GENERIC_HWEIGHT
203 config GENERIC_CALIBRATE_DELAY
207 config ARCH_MAY_HAVE_PC_FDC
211 config EMULATED_CMPXCHG
215 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
216 is emulated, and therefore it is not completely atomic.
222 depends on SPARC32 && SMP
227 depends on SPARC64 && SMP
230 bool "Support for early boot text console"
234 Say Y here to enable a faster early framebuffer boot console.
237 bool "Enable seccomp to safely compute untrusted bytecode"
238 depends on SPARC64 && PROC_FS
241 This kernel feature is useful for number crunching applications
242 that may need to compute untrusted bytecode during their
243 execution. By using pipes or other transports made available to
244 the process as file descriptors supporting the read/write
245 syscalls, it's possible to isolate those applications in
246 their own address space using seccomp. Once seccomp is
247 enabled via /proc/<pid>/seccomp, it cannot be disabled
248 and the task is only allowed to execute a few safe syscalls
249 defined by each seccomp mode.
251 If unsure, say Y. Only embedded should say N here.
254 bool "Support for hot-pluggable CPUs"
255 depends on SPARC64 && SMP
257 Say Y here to experiment with turning CPUs off and on. CPUs
258 can be controlled through /sys/devices/system/cpu/cpu#.
259 Say N if you want to disable CPU hotplug.
262 source "drivers/cpufreq/Kconfig"
266 tristate "UltraSPARC-III Memory Controller driver"
270 This adds a driver for the UltraSPARC-III memory controller.
271 Loading this driver allows exact mnemonic strings to be
272 printed in the event of a memory error, so that the faulty DIMM
273 on the motherboard can be matched to the error.
275 If in doubt, say Y, as this information can be very useful.
277 # Global things across all Sun machines.
278 config GENERIC_LOCKBREAK
281 depends on SPARC64 && SMP && PREEMPT
285 depends on SPARC64 && SMP
288 int "Maximum NUMA Nodes (as a power of 2)"
291 depends on NEED_MULTIPLE_NODES
293 Specify the maximum number of NUMA Nodes available on the target
294 system. Increases memory reserved to accommodate various tables.
296 # Some NUMA nodes have memory ranges that span
297 # other nodes. Even though a pfn is valid and
298 # between a node's start and end pfns, it may not
299 # reside on that node. See memmap_init_zone()
301 config NODES_SPAN_OTHER_NODES
303 depends on NEED_MULTIPLE_NODES
305 config ARCH_SPARSEMEM_ENABLE
306 def_bool y if SPARC64
307 select SPARSEMEM_VMEMMAP_ENABLE
309 config ARCH_SPARSEMEM_DEFAULT
310 def_bool y if SPARC64
312 config FORCE_MAX_ZONEORDER
313 int "Maximum zone order"
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
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.
327 source "kernel/power/Kconfig"
331 bool "SMT (Hyperthreading) scheduler support"
332 depends on SPARC64 && SMP
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.
340 bool "Multi-core scheduler support"
341 depends on SPARC64 && SMP
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.
349 bool "Default bootloader kernel arguments"
353 string "Initial kernel command string"
354 depends on CMDLINE_BOOL
355 default "console=ttyS0,9600 root=/dev/sda1"
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.
363 NOTE: This option WILL override the PROM bootargs setting!
369 Enable power management and CPU standby features on supported
373 tristate "Sun4m LED driver"
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
381 config SERIAL_CONSOLE
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
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
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
406 bool "Sparc Leon processor family"
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
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.
421 menu "U-Boot options"
423 config UBOOT_LOAD_ADDR
424 hex "uImage Load Address"
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.
431 config UBOOT_FLASH_ADDR
432 hex "uImage.o Load Address"
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.
440 config UBOOT_ENTRY_ADDR
441 hex "uImage Entry Address"
444 Do not change this unless you know what you're doing. This is
445 hardcoded by the SPARC32 and LEON port.
447 This is the virtual address u-boot jumps to when booting the Linux
455 menu "Bus options (PCI etc.)"
465 bool "Sun Logical Domains support"
468 Say Y here is you want to support virtual devices via
473 depends on PCI && SPARC32 && !SPARC_LEON
478 depends on PCI && SPARC_LEON
482 bool "GRPCI Host Bridge Support"
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.
493 bool "GRPCI2 Host Bridge Support"
497 Say Y here to include the GRPCI2 Host Bridge Driver.
499 config SUN_OPENPROMFS
500 tristate "Openprom tree appears in /proc/openprom"
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".
506 To compile the /proc/openprom support as a module, choose M here: the
507 module will be called openpromfs.
509 Only choose N if you know in advance that you will not need to modify
510 OpenPROM settings on the running system.
516 depends on SPARC64 && PCI
518 config SPARC64_PCI_MSI
521 depends on SPARC64_PCI && PCI_MSI
529 select COMPAT_BINFMT_ELF
531 select ARCH_WANT_OLD_COMPAT_IPC
532 select COMPAT_OLD_SIGACTION
534 config SYSVIPC_COMPAT
536 depends on COMPAT && SYSVIPC
539 source "drivers/sbus/char/Kconfig"