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 GENERIC_IRQ_SHOW
33 select ARCH_WANT_IPC_PARSE_VERSION
34 select GENERIC_PCI_IOMAP
35 select HAVE_NMI_WATCHDOG if SPARC64
36 select HAVE_CBPF_JIT if SPARC32
37 select HAVE_EBPF_JIT if SPARC64
38 select HAVE_DEBUG_BUGVERBOSE
39 select GENERIC_SMP_IDLE_THREAD
40 select GENERIC_CLOCKEVENTS
41 select GENERIC_STRNCPY_FROM_USER
42 select GENERIC_STRNLEN_USER
43 select MODULES_USE_ELF_RELA
44 select PCI_SYSCALL if PCI
45 select ODD_RT_SIGACTION
47 select CPU_NO_EFFICIENT_FFS
48 select LOCKDEP_SMALL if LOCKDEP
49 select NEED_DMA_MAP_STATE
50 select NEED_SG_DMA_LENGTH
54 select ARCH_32BIT_OFF_T
55 select ARCH_HAS_SYNC_DMA_FOR_CPU
56 select GENERIC_ATOMIC64
63 select HAVE_FUNCTION_TRACER
64 select HAVE_FUNCTION_GRAPH_TRACER
65 select HAVE_KRETPROBES
67 select MMU_GATHER_RCU_TABLE_FREE if SMP
68 select HAVE_MEMBLOCK_NODE_MAP
69 select HAVE_ARCH_TRANSPARENT_HUGEPAGE
70 select HAVE_DYNAMIC_FTRACE
71 select HAVE_FTRACE_MCOUNT_RECORD
72 select HAVE_SYSCALL_TRACEPOINTS
73 select HAVE_CONTEXT_TRACKING
75 select HAVE_DEBUG_KMEMLEAK
81 select RTC_DRV_STARFIRE
82 select HAVE_PERF_EVENTS
83 select PERF_USE_VMALLOC
84 select IRQ_PREFLOW_FASTEOI
85 select ARCH_HAVE_NMI_SAFE_CMPXCHG
86 select HAVE_C_RECORDMCOUNT
87 select HAVE_ARCH_AUDITSYSCALL
88 select ARCH_SUPPORTS_ATOMIC_RMW
90 select HAVE_REGS_AND_STACK_ACCESS_API
91 select ARCH_USE_QUEUED_RWLOCKS
92 select ARCH_USE_QUEUED_SPINLOCKS
93 select GENERIC_TIME_VSYSCALL
94 select ARCH_CLOCKSOURCE_DATA
95 select ARCH_HAS_PTE_SPECIAL
96 select PCI_DOMAINS if PCI
97 select ARCH_HAS_GIGANTIC_PAGE
99 config ARCH_PROC_KCORE_TEXT
102 config CPU_BIG_ENDIAN
109 config STACKTRACE_SUPPORT
113 config LOCKDEP_SUPPORT
117 config ARCH_HIBERNATION_POSSIBLE
118 def_bool y if SPARC64
124 config HAVE_SETUP_PER_CPU_AREA
125 def_bool y if SPARC64
127 config NEED_PER_CPU_EMBED_FIRST_CHUNK
128 def_bool y if SPARC64
130 config NEED_PER_CPU_PAGE_FIRST_CHUNK
131 def_bool y if SPARC64
145 config GENERIC_ISA_DMA
149 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
150 def_bool y if SPARC64
152 config PGTABLE_LEVELS
156 config ARCH_SUPPORTS_UPROBES
157 def_bool y if SPARC64
159 menu "Processor type and features"
162 bool "Symmetric multi-processing support"
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
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.
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.
178 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
179 available at <http://www.tldp.org/docs.html#howto>.
181 If you don't know what to do here, say N.
184 int "Maximum number of CPUs"
186 range 2 32 if SPARC32
187 range 2 4096 if SPARC64
188 default 32 if SPARC32
189 default 4096 if SPARC64
191 source "kernel/Kconfig.hz"
193 config GENERIC_HWEIGHT
197 config GENERIC_CALIBRATE_DELAY
201 config ARCH_MAY_HAVE_PC_FDC
205 config EMULATED_CMPXCHG
209 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
210 is emulated, and therefore it is not completely atomic.
216 depends on SPARC32 && SMP
221 depends on SPARC64 && SMP
224 bool "Support for early boot text console"
228 Say Y here to enable a faster early framebuffer boot console.
231 bool "Enable seccomp to safely compute untrusted bytecode"
232 depends on SPARC64 && PROC_FS
235 This kernel feature is useful for number crunching applications
236 that may need to compute untrusted bytecode during their
237 execution. By using pipes or other transports made available to
238 the process as file descriptors supporting the read/write
239 syscalls, it's possible to isolate those applications in
240 their own address space using seccomp. Once seccomp is
241 enabled via /proc/<pid>/seccomp, it cannot be disabled
242 and the task is only allowed to execute a few safe syscalls
243 defined by each seccomp mode.
245 If unsure, say Y. Only embedded should say N here.
248 bool "Support for hot-pluggable CPUs"
249 depends on SPARC64 && SMP
251 Say Y here to experiment with turning CPUs off and on. CPUs
252 can be controlled through /sys/devices/system/cpu/cpu#.
253 Say N if you want to disable CPU hotplug.
256 source "drivers/cpufreq/Kconfig"
260 tristate "UltraSPARC-III Memory Controller driver"
264 This adds a driver for the UltraSPARC-III memory controller.
265 Loading this driver allows exact mnemonic strings to be
266 printed in the event of a memory error, so that the faulty DIMM
267 on the motherboard can be matched to the error.
269 If in doubt, say Y, as this information can be very useful.
271 # Global things across all Sun machines.
272 config GENERIC_LOCKBREAK
275 depends on SPARC64 && SMP && PREEMPTION
279 depends on SPARC64 && SMP
282 int "Maximum NUMA Nodes (as a power of 2)"
285 depends on NEED_MULTIPLE_NODES
287 Specify the maximum number of NUMA Nodes available on the target
288 system. Increases memory reserved to accommodate various tables.
290 # Some NUMA nodes have memory ranges that span
291 # other nodes. Even though a pfn is valid and
292 # between a node's start and end pfns, it may not
293 # reside on that node. See memmap_init_zone()
295 config NODES_SPAN_OTHER_NODES
297 depends on NEED_MULTIPLE_NODES
299 config ARCH_SPARSEMEM_ENABLE
300 def_bool y if SPARC64
301 select SPARSEMEM_VMEMMAP_ENABLE
303 config ARCH_SPARSEMEM_DEFAULT
304 def_bool y if SPARC64
306 config FORCE_MAX_ZONEORDER
307 int "Maximum zone order"
310 The kernel memory allocator divides physically contiguous memory
311 blocks into "zones", where each zone is a power of two number of
312 pages. This option selects the largest power of two that the kernel
313 keeps in the memory allocator. If you need to allocate very large
314 blocks of physically contiguous memory, then you may need to
317 This config option is actually maximum order plus one. For example,
318 a value of 13 means that the largest free memory block is 2^12 pages.
321 source "kernel/power/Kconfig"
325 bool "SMT (Hyperthreading) scheduler support"
326 depends on SPARC64 && SMP
329 SMT scheduler support improves the CPU scheduler's decision making
330 when dealing with SPARC cpus at a cost of slightly increased overhead
331 in some places. If unsure say N here.
334 bool "Multi-core scheduler support"
335 depends on SPARC64 && SMP
338 Multi-core scheduler support improves the CPU scheduler's decision
339 making when dealing with multi-core CPU chips at a cost of slightly
340 increased overhead in some places. If unsure say N here.
343 bool "Default bootloader kernel arguments"
347 string "Initial kernel command string"
348 depends on CMDLINE_BOOL
349 default "console=ttyS0,9600 root=/dev/sda1"
351 Say Y here if you want to be able to pass default arguments to
352 the kernel. This will be overridden by the bootloader, if you
353 use one (such as SILO). This is most useful if you want to boot
354 a kernel from TFTP, and want default options to be available
355 with having them passed on the command line.
357 NOTE: This option WILL override the PROM bootargs setting!
363 Enable power management and CPU standby features on supported
367 tristate "Sun4m LED driver"
370 This driver toggles the front-panel LED on sun4m systems
371 in a user-specifiable manner. Its state can be probed
372 by reading /proc/led and its blinking mode can be changed
373 via writes to /proc/led
375 config SERIAL_CONSOLE
380 If you say Y here, it will be possible to use a serial port as the
381 system console (the system console is the device which receives all
382 kernel messages and warnings and which allows logins in single user
383 mode). This could be useful if some terminal or printer is connected
386 Even if you say Y here, the currently visible virtual console
387 (/dev/tty0) will still be used as the system console by default, but
388 you can alter that using a kernel command line option such as
389 "console=ttyS1". (Try "man bootparam" or see the documentation of
390 your boot loader (silo) about how to pass options to the kernel at
393 If you don't have a graphics card installed and you say Y here, the
394 kernel will automatically use the first serial line, /dev/ttyS0, as
400 bool "Sparc Leon processor family"
402 select USB_EHCI_BIG_ENDIAN_MMIO
403 select USB_EHCI_BIG_ENDIAN_DESC
404 select USB_UHCI_BIG_ENDIAN_MMIO
405 select USB_UHCI_BIG_ENDIAN_DESC
407 If you say Y here if you are running on a SPARC-LEON processor.
408 The LEON processor is a synthesizable VHDL model of the
409 SPARC-v8 standard. LEON is part of the GRLIB collection of
410 IP cores that are distributed under GPL. GRLIB can be downloaded
411 from www.gaisler.com. You can download a sparc-linux cross-compilation
412 toolchain at www.gaisler.com.
415 menu "U-Boot options"
417 config UBOOT_LOAD_ADDR
418 hex "uImage Load Address"
421 U-Boot kernel load address, the address in physical address space
422 where u-boot will place the Linux kernel before booting it.
423 This address is normally the base address of main memory + 0x4000.
425 config UBOOT_FLASH_ADDR
426 hex "uImage.o Load Address"
429 Optional setting only affecting the uImage.o ELF-image used to
430 download the uImage file to the target using a ELF-loader other than
431 U-Boot. It may for example be used to download an uImage to FLASH with
432 the GRMON utility before even starting u-boot.
434 config UBOOT_ENTRY_ADDR
435 hex "uImage Entry Address"
438 Do not change this unless you know what you're doing. This is
439 hardcoded by the SPARC32 and LEON port.
441 This is the virtual address u-boot jumps to when booting the Linux
449 menu "Bus options (PCI etc.)"
459 bool "Sun Logical Domains support"
462 Say Y here is you want to support virtual devices via
467 depends on PCI && SPARC32 && !SPARC_LEON
472 depends on PCI && SPARC_LEON
476 bool "GRPCI Host Bridge Support"
480 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
481 PCI host controller is typically found in GRLIB SPARC32/LEON
482 systems. The driver has one property (all_pci_errors) controlled
483 from the bootloader that makes the GRPCI to generate interrupts
484 on detected PCI Parity and System errors.
487 bool "GRPCI2 Host Bridge Support"
491 Say Y here to include the GRPCI2 Host Bridge Driver.
493 config SUN_OPENPROMFS
494 tristate "Openprom tree appears in /proc/openprom"
496 If you say Y, the OpenPROM device tree will be available as a
497 virtual file system, which you can mount to /proc/openprom by "mount
498 -t openpromfs none /proc/openprom".
500 To compile the /proc/openprom support as a module, choose M here: the
501 module will be called openpromfs.
503 Only choose N if you know in advance that you will not need to modify
504 OpenPROM settings on the running system.
510 depends on SPARC64 && PCI
512 config SPARC64_PCI_MSI
515 depends on SPARC64_PCI && PCI_MSI
523 select COMPAT_BINFMT_ELF
525 select ARCH_WANT_OLD_COMPAT_IPC
526 select COMPAT_OLD_SIGACTION
528 config SYSVIPC_COMPAT
530 depends on COMPAT && SYSVIPC
533 source "drivers/sbus/char/Kconfig"