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
21 select HAVE_ASM_MODVERSIONS
23 select HAVE_ARCH_KGDB if !SMP || SPARC64
24 select HAVE_ARCH_TRACEHOOK
25 select HAVE_ARCH_SECCOMP if SPARC64
26 select HAVE_EXIT_THREAD
28 select SYSCTL_EXCEPTION_TRACE
32 select HAVE_ARCH_JUMP_LABEL 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_STRNCPY_FROM_USER
42 select GENERIC_STRNLEN_USER
43 select MODULES_USE_ELF_RELA
44 select PCI_SYSCALL if PCI
45 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
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
53 select TRACE_IRQFLAGS_SUPPORT
57 select ARCH_32BIT_OFF_T
58 select ARCH_HAS_SYNC_DMA_FOR_CPU
59 select GENERIC_ATOMIC64
67 select HAVE_FUNCTION_TRACER
68 select HAVE_FUNCTION_GRAPH_TRACER
69 select HAVE_KRETPROBES
71 select MMU_GATHER_RCU_TABLE_FREE if SMP
72 select HAVE_ARCH_TRANSPARENT_HUGEPAGE
73 select HAVE_DYNAMIC_FTRACE
74 select HAVE_FTRACE_MCOUNT_RECORD
75 select HAVE_SYSCALL_TRACEPOINTS
76 select HAVE_CONTEXT_TRACKING
78 select HAVE_DEBUG_KMEMLEAK
84 select RTC_DRV_STARFIRE
85 select HAVE_PERF_EVENTS
86 select PERF_USE_VMALLOC
87 select ARCH_HAVE_NMI_SAFE_CMPXCHG
88 select HAVE_C_RECORDMCOUNT
89 select HAVE_ARCH_AUDITSYSCALL
90 select ARCH_SUPPORTS_ATOMIC_RMW
91 select ARCH_SUPPORTS_DEBUG_PAGEALLOC
93 select HAVE_REGS_AND_STACK_ACCESS_API
94 select ARCH_USE_QUEUED_RWLOCKS
95 select ARCH_USE_QUEUED_SPINLOCKS
96 select GENERIC_TIME_VSYSCALL
97 select ARCH_CLOCKSOURCE_DATA
98 select ARCH_HAS_PTE_SPECIAL
99 select PCI_DOMAINS if PCI
100 select ARCH_HAS_GIGANTIC_PAGE
101 select HAVE_SOFTIRQ_ON_OWN_STACK
103 config ARCH_PROC_KCORE_TEXT
106 config CPU_BIG_ENDIAN
113 config STACKTRACE_SUPPORT
117 config LOCKDEP_SUPPORT
121 config ARCH_HIBERNATION_POSSIBLE
122 def_bool y if SPARC64
128 config HAVE_SETUP_PER_CPU_AREA
129 def_bool y if SPARC64
131 config NEED_PER_CPU_EMBED_FIRST_CHUNK
132 def_bool y if SPARC64
134 config NEED_PER_CPU_PAGE_FIRST_CHUNK
135 def_bool y if SPARC64
146 config GENERIC_ISA_DMA
150 config PGTABLE_LEVELS
154 config ARCH_SUPPORTS_UPROBES
155 def_bool y if SPARC64
157 menu "Processor type and features"
160 bool "Symmetric multi-processing support"
162 This enables support for systems with more than one CPU. If you have
163 a system with only one CPU, say N. If you have a system with more
166 If you say N here, the kernel will run on uni- and multiprocessor
167 machines, but will use only one CPU of a multiprocessor machine. If
168 you say Y here, the kernel will run on many, but not all,
169 uniprocessor machines. On a uniprocessor machine, the kernel
170 will run faster if you say N here.
172 People using multiprocessor machines who say Y here should also say
173 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
174 Management" code will be disabled if you say Y here.
176 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
177 available at <https://www.tldp.org/docs.html#howto>.
179 If you don't know what to do here, say N.
182 int "Maximum number of CPUs"
184 range 2 32 if SPARC32
185 range 2 4096 if SPARC64
186 default 32 if SPARC32
187 default 4096 if SPARC64
189 source "kernel/Kconfig.hz"
191 config GENERIC_HWEIGHT
195 config GENERIC_CALIBRATE_DELAY
199 config ARCH_MAY_HAVE_PC_FDC
203 config EMULATED_CMPXCHG
207 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
208 is emulated, and therefore it is not completely atomic.
214 depends on SPARC32 && SMP
219 depends on SPARC64 && SMP
222 bool "Support for early boot text console"
226 Say Y here to enable a faster early framebuffer boot console.
229 bool "Support for hot-pluggable CPUs"
230 depends on SPARC64 && SMP
232 Say Y here to experiment with turning CPUs off and on. CPUs
233 can be controlled through /sys/devices/system/cpu/cpu#.
234 Say N if you want to disable CPU hotplug.
237 source "drivers/cpufreq/Kconfig"
241 tristate "UltraSPARC-III Memory Controller driver"
245 This adds a driver for the UltraSPARC-III memory controller.
246 Loading this driver allows exact mnemonic strings to be
247 printed in the event of a memory error, so that the faulty DIMM
248 on the motherboard can be matched to the error.
250 If in doubt, say Y, as this information can be very useful.
252 # Global things across all Sun machines.
253 config GENERIC_LOCKBREAK
256 depends on SPARC64 && SMP && PREEMPTION
260 depends on SPARC64 && SMP
263 int "Maximum NUMA Nodes (as a power of 2)"
268 Specify the maximum number of NUMA Nodes available on the target
269 system. Increases memory reserved to accommodate various tables.
271 config ARCH_SPARSEMEM_ENABLE
272 def_bool y if SPARC64
273 select SPARSEMEM_VMEMMAP_ENABLE
275 config ARCH_SPARSEMEM_DEFAULT
276 def_bool y if SPARC64
278 config FORCE_MAX_ZONEORDER
279 int "Maximum zone order"
282 The kernel memory allocator divides physically contiguous memory
283 blocks into "zones", where each zone is a power of two number of
284 pages. This option selects the largest power of two that the kernel
285 keeps in the memory allocator. If you need to allocate very large
286 blocks of physically contiguous memory, then you may need to
289 This config option is actually maximum order plus one. For example,
290 a value of 13 means that the largest free memory block is 2^12 pages.
293 source "kernel/power/Kconfig"
297 bool "SMT (Hyperthreading) scheduler support"
298 depends on SPARC64 && SMP
301 SMT scheduler support improves the CPU scheduler's decision making
302 when dealing with SPARC cpus at a cost of slightly increased overhead
303 in some places. If unsure say N here.
306 bool "Multi-core scheduler support"
307 depends on SPARC64 && SMP
310 Multi-core scheduler support improves the CPU scheduler's decision
311 making when dealing with multi-core CPU chips at a cost of slightly
312 increased overhead in some places. If unsure say N here.
315 bool "Default bootloader kernel arguments"
319 string "Initial kernel command string"
320 depends on CMDLINE_BOOL
321 default "console=ttyS0,9600 root=/dev/sda1"
323 Say Y here if you want to be able to pass default arguments to
324 the kernel. This will be overridden by the bootloader, if you
325 use one (such as SILO). This is most useful if you want to boot
326 a kernel from TFTP, and want default options to be available
327 with having them passed on the command line.
329 NOTE: This option WILL override the PROM bootargs setting!
335 Enable power management and CPU standby features on supported
339 tristate "Sun4m LED driver"
342 This driver toggles the front-panel LED on sun4m systems
343 in a user-specifiable manner. Its state can be probed
344 by reading /proc/led and its blinking mode can be changed
345 via writes to /proc/led
347 config SERIAL_CONSOLE
352 If you say Y here, it will be possible to use a serial port as the
353 system console (the system console is the device which receives all
354 kernel messages and warnings and which allows logins in single user
355 mode). This could be useful if some terminal or printer is connected
358 Even if you say Y here, the currently visible virtual console
359 (/dev/tty0) will still be used as the system console by default, but
360 you can alter that using a kernel command line option such as
361 "console=ttyS1". (Try "man bootparam" or see the documentation of
362 your boot loader (silo) about how to pass options to the kernel at
365 If you don't have a graphics card installed and you say Y here, the
366 kernel will automatically use the first serial line, /dev/ttyS0, as
372 bool "Sparc Leon processor family"
374 select USB_EHCI_BIG_ENDIAN_MMIO
375 select USB_EHCI_BIG_ENDIAN_DESC
376 select USB_UHCI_BIG_ENDIAN_MMIO
377 select USB_UHCI_BIG_ENDIAN_DESC
379 If you say Y here if you are running on a SPARC-LEON processor.
380 The LEON processor is a synthesizable VHDL model of the
381 SPARC-v8 standard. LEON is part of the GRLIB collection of
382 IP cores that are distributed under GPL. GRLIB can be downloaded
383 from www.gaisler.com. You can download a sparc-linux cross-compilation
384 toolchain at www.gaisler.com.
387 menu "U-Boot options"
389 config UBOOT_LOAD_ADDR
390 hex "uImage Load Address"
393 U-Boot kernel load address, the address in physical address space
394 where u-boot will place the Linux kernel before booting it.
395 This address is normally the base address of main memory + 0x4000.
397 config UBOOT_FLASH_ADDR
398 hex "uImage.o Load Address"
401 Optional setting only affecting the uImage.o ELF-image used to
402 download the uImage file to the target using a ELF-loader other than
403 U-Boot. It may for example be used to download an uImage to FLASH with
404 the GRMON utility before even starting u-boot.
406 config UBOOT_ENTRY_ADDR
407 hex "uImage Entry Address"
410 Do not change this unless you know what you're doing. This is
411 hardcoded by the SPARC32 and LEON port.
413 This is the virtual address u-boot jumps to when booting the Linux
421 menu "Bus options (PCI etc.)"
431 bool "Sun Logical Domains support"
434 Say Y here is you want to support virtual devices via
439 depends on PCI && SPARC32 && !SPARC_LEON
444 depends on PCI && SPARC_LEON
448 bool "GRPCI Host Bridge Support"
452 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
453 PCI host controller is typically found in GRLIB SPARC32/LEON
454 systems. The driver has one property (all_pci_errors) controlled
455 from the bootloader that makes the GRPCI to generate interrupts
456 on detected PCI Parity and System errors.
459 bool "GRPCI2 Host Bridge Support"
463 Say Y here to include the GRPCI2 Host Bridge Driver.
465 config SUN_OPENPROMFS
466 tristate "Openprom tree appears in /proc/openprom"
468 If you say Y, the OpenPROM device tree will be available as a
469 virtual file system, which you can mount to /proc/openprom by "mount
470 -t openpromfs none /proc/openprom".
472 To compile the /proc/openprom support as a module, choose M here: the
473 module will be called openpromfs.
475 Only choose N if you know in advance that you will not need to modify
476 OpenPROM settings on the running system.
482 depends on SPARC64 && PCI
484 config SPARC64_PCI_MSI
487 depends on SPARC64_PCI && PCI_MSI
496 select ARCH_WANT_OLD_COMPAT_IPC
497 select COMPAT_OLD_SIGACTION
499 config SYSVIPC_COMPAT
501 depends on COMPAT && SYSVIPC
504 source "drivers/sbus/char/Kconfig"