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
22 select HAVE_ARCH_KGDB if !SMP || SPARC64
23 select HAVE_ARCH_TRACEHOOK
24 select HAVE_ARCH_SECCOMP if SPARC64
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 MODULES_USE_ELF_RELA
41 select PCI_SYSCALL if PCI
42 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
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
49 select TRACE_IRQFLAGS_SUPPORT
53 select ARCH_32BIT_OFF_T
54 select ARCH_HAS_SYNC_DMA_FOR_CPU
56 select DMA_DIRECT_REMAP
57 select GENERIC_ATOMIC64
64 select ALTERNATE_USER_ADDRESS_SPACE
65 select HAVE_FUNCTION_TRACER
66 select HAVE_FUNCTION_GRAPH_TRACER
67 select HAVE_KRETPROBES
69 select MMU_GATHER_RCU_TABLE_FREE if SMP
70 select HAVE_ARCH_TRANSPARENT_HUGEPAGE
71 select HAVE_DYNAMIC_FTRACE
72 select HAVE_FTRACE_MCOUNT_RECORD
73 select HAVE_SYSCALL_TRACEPOINTS
74 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 ARCH_HAVE_NMI_SAFE_CMPXCHG
86 select HAVE_C_RECORDMCOUNT
87 select ARCH_HAS_VM_GET_PAGE_PROT
88 select HAVE_ARCH_AUDITSYSCALL
89 select ARCH_SUPPORTS_ATOMIC_RMW
90 select ARCH_SUPPORTS_DEBUG_PAGEALLOC
92 select HAVE_REGS_AND_STACK_ACCESS_API
93 select ARCH_USE_QUEUED_RWLOCKS
94 select ARCH_USE_QUEUED_SPINLOCKS
95 select GENERIC_TIME_VSYSCALL
96 select ARCH_CLOCKSOURCE_DATA
97 select ARCH_HAS_PTE_SPECIAL
98 select PCI_DOMAINS if PCI
99 select ARCH_HAS_GIGANTIC_PAGE
100 select HAVE_SOFTIRQ_ON_OWN_STACK
101 select HAVE_SETUP_PER_CPU_AREA
102 select NEED_PER_CPU_EMBED_FIRST_CHUNK
103 select NEED_PER_CPU_PAGE_FIRST_CHUNK
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
139 config GENERIC_ISA_DMA
143 config PGTABLE_LEVELS
147 config ARCH_SUPPORTS_UPROBES
148 def_bool y if SPARC64
150 menu "Processor type and features"
153 bool "Symmetric multi-processing support"
155 This enables support for systems with more than one CPU. If you have
156 a system with only one CPU, say N. If you have a system with more
159 If you say N here, the kernel will run on uni- and multiprocessor
160 machines, but will use only one CPU of a multiprocessor machine. If
161 you say Y here, the kernel will run on many, but not all,
162 uniprocessor machines. On a uniprocessor machine, the kernel
163 will run faster if you say N here.
165 People using multiprocessor machines who say Y here should also say
166 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
167 Management" code will be disabled if you say Y here.
169 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
170 available at <https://www.tldp.org/docs.html#howto>.
172 If you don't know what to do here, say N.
175 int "Maximum number of CPUs"
177 range 2 32 if SPARC32
178 range 2 4096 if SPARC64
179 default 32 if SPARC32
180 default 4096 if SPARC64
182 source "kernel/Kconfig.hz"
184 config GENERIC_HWEIGHT
188 config GENERIC_CALIBRATE_DELAY
192 config ARCH_MAY_HAVE_PC_FDC
196 config EMULATED_CMPXCHG
200 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
201 is emulated, and therefore it is not completely atomic.
207 depends on SPARC32 && SMP
212 depends on SPARC64 && SMP
215 bool "Support for early boot text console"
219 Say Y here to enable a faster early framebuffer boot console.
222 bool "Support for hot-pluggable CPUs"
223 depends on SPARC64 && SMP
225 Say Y here to experiment with turning CPUs off and on. CPUs
226 can be controlled through /sys/devices/system/cpu/cpu#.
227 Say N if you want to disable CPU hotplug.
230 source "drivers/cpufreq/Kconfig"
234 tristate "UltraSPARC-III Memory Controller driver"
238 This adds a driver for the UltraSPARC-III memory controller.
239 Loading this driver allows exact mnemonic strings to be
240 printed in the event of a memory error, so that the faulty DIMM
241 on the motherboard can be matched to the error.
243 If in doubt, say Y, as this information can be very useful.
245 # Global things across all Sun machines.
246 config GENERIC_LOCKBREAK
249 depends on SPARC64 && SMP && PREEMPTION
253 depends on SPARC64 && SMP
256 int "Maximum NUMA Nodes (as a power of 2)"
261 Specify the maximum number of NUMA Nodes available on the target
262 system. Increases memory reserved to accommodate various tables.
264 config ARCH_SPARSEMEM_ENABLE
265 def_bool y if SPARC64
266 select SPARSEMEM_VMEMMAP_ENABLE
268 config ARCH_SPARSEMEM_DEFAULT
269 def_bool y if SPARC64
271 config FORCE_MAX_ZONEORDER
272 int "Maximum zone order"
275 The kernel memory allocator divides physically contiguous memory
276 blocks into "zones", where each zone is a power of two number of
277 pages. This option selects the largest power of two that the kernel
278 keeps in the memory allocator. If you need to allocate very large
279 blocks of physically contiguous memory, then you may need to
282 This config option is actually maximum order plus one. For example,
283 a value of 13 means that the largest free memory block is 2^12 pages.
286 source "kernel/power/Kconfig"
290 bool "SMT (Hyperthreading) scheduler support"
291 depends on SPARC64 && SMP
294 SMT scheduler support improves the CPU scheduler's decision making
295 when dealing with SPARC cpus at a cost of slightly increased overhead
296 in some places. If unsure say N here.
299 bool "Multi-core scheduler support"
300 depends on SPARC64 && SMP
303 Multi-core scheduler support improves the CPU scheduler's decision
304 making when dealing with multi-core CPU chips at a cost of slightly
305 increased overhead in some places. If unsure say N here.
308 bool "Default bootloader kernel arguments"
312 string "Initial kernel command string"
313 depends on CMDLINE_BOOL
314 default "console=ttyS0,9600 root=/dev/sda1"
316 Say Y here if you want to be able to pass default arguments to
317 the kernel. This will be overridden by the bootloader, if you
318 use one (such as SILO). This is most useful if you want to boot
319 a kernel from TFTP, and want default options to be available
320 with having them passed on the command line.
322 NOTE: This option WILL override the PROM bootargs setting!
328 Enable power management and CPU standby features on supported
332 tristate "Sun4m LED driver"
335 This driver toggles the front-panel LED on sun4m systems
336 in a user-specifiable manner. Its state can be probed
337 by reading /proc/led and its blinking mode can be changed
338 via writes to /proc/led
340 config SERIAL_CONSOLE
345 If you say Y here, it will be possible to use a serial port as the
346 system console (the system console is the device which receives all
347 kernel messages and warnings and which allows logins in single user
348 mode). This could be useful if some terminal or printer is connected
351 Even if you say Y here, the currently visible virtual console
352 (/dev/tty0) will still be used as the system console by default, but
353 you can alter that using a kernel command line option such as
354 "console=ttyS1". (Try "man bootparam" or see the documentation of
355 your boot loader (silo) about how to pass options to the kernel at
358 If you don't have a graphics card installed and you say Y here, the
359 kernel will automatically use the first serial line, /dev/ttyS0, as
365 bool "Sparc Leon processor family"
367 select USB_EHCI_BIG_ENDIAN_MMIO
368 select USB_EHCI_BIG_ENDIAN_DESC
369 select USB_UHCI_BIG_ENDIAN_MMIO
370 select USB_UHCI_BIG_ENDIAN_DESC
372 If you say Y here if you are running on a SPARC-LEON processor.
373 The LEON processor is a synthesizable VHDL model of the
374 SPARC-v8 standard. LEON is part of the GRLIB collection of
375 IP cores that are distributed under GPL. GRLIB can be downloaded
376 from www.gaisler.com. You can download a sparc-linux cross-compilation
377 toolchain at www.gaisler.com.
380 menu "U-Boot options"
382 config UBOOT_LOAD_ADDR
383 hex "uImage Load Address"
386 U-Boot kernel load address, the address in physical address space
387 where u-boot will place the Linux kernel before booting it.
388 This address is normally the base address of main memory + 0x4000.
390 config UBOOT_FLASH_ADDR
391 hex "uImage.o Load Address"
394 Optional setting only affecting the uImage.o ELF-image used to
395 download the uImage file to the target using a ELF-loader other than
396 U-Boot. It may for example be used to download an uImage to FLASH with
397 the GRMON utility before even starting u-boot.
399 config UBOOT_ENTRY_ADDR
400 hex "uImage Entry Address"
403 Do not change this unless you know what you're doing. This is
404 hardcoded by the SPARC32 and LEON port.
406 This is the virtual address u-boot jumps to when booting the Linux
414 menu "Bus options (PCI etc.)"
424 bool "Sun Logical Domains support"
427 Say Y here is you want to support virtual devices via
432 depends on PCI && SPARC32 && !SPARC_LEON
437 depends on PCI && SPARC_LEON
441 bool "GRPCI Host Bridge Support"
445 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
446 PCI host controller is typically found in GRLIB SPARC32/LEON
447 systems. The driver has one property (all_pci_errors) controlled
448 from the bootloader that makes the GRPCI to generate interrupts
449 on detected PCI Parity and System errors.
452 bool "GRPCI2 Host Bridge Support"
456 Say Y here to include the GRPCI2 Host Bridge Driver.
458 config SUN_OPENPROMFS
459 tristate "Openprom tree appears in /proc/openprom"
461 If you say Y, the OpenPROM device tree will be available as a
462 virtual file system, which you can mount to /proc/openprom by "mount
463 -t openpromfs none /proc/openprom".
465 To compile the /proc/openprom support as a module, choose M here: the
466 module will be called openpromfs.
468 Only choose N if you know in advance that you will not need to modify
469 OpenPROM settings on the running system.
475 depends on SPARC64 && PCI
477 config SPARC64_PCI_MSI
480 depends on SPARC64_PCI && PCI_MSI
489 select ARCH_WANT_OLD_COMPAT_IPC
490 select COMPAT_OLD_SIGACTION
492 config SYSVIPC_COMPAT
494 depends on COMPAT && SYSVIPC
497 source "drivers/sbus/char/Kconfig"