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
53 select ARCH_32BIT_OFF_T
54 select ARCH_HAS_SYNC_DMA_FOR_CPU
55 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_ARCH_TRANSPARENT_HUGEPAGE
69 select HAVE_DYNAMIC_FTRACE
70 select HAVE_FTRACE_MCOUNT_RECORD
71 select HAVE_SYSCALL_TRACEPOINTS
72 select HAVE_CONTEXT_TRACKING
74 select HAVE_DEBUG_KMEMLEAK
80 select RTC_DRV_STARFIRE
81 select HAVE_PERF_EVENTS
82 select PERF_USE_VMALLOC
83 select ARCH_HAVE_NMI_SAFE_CMPXCHG
84 select HAVE_C_RECORDMCOUNT
85 select HAVE_ARCH_AUDITSYSCALL
86 select ARCH_SUPPORTS_ATOMIC_RMW
87 select ARCH_SUPPORTS_DEBUG_PAGEALLOC
89 select HAVE_REGS_AND_STACK_ACCESS_API
90 select ARCH_USE_QUEUED_RWLOCKS
91 select ARCH_USE_QUEUED_SPINLOCKS
92 select GENERIC_TIME_VSYSCALL
93 select ARCH_CLOCKSOURCE_DATA
94 select ARCH_HAS_PTE_SPECIAL
95 select PCI_DOMAINS if PCI
96 select ARCH_HAS_GIGANTIC_PAGE
97 select HAVE_SOFTIRQ_ON_OWN_STACK
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
142 config GENERIC_ISA_DMA
146 config PGTABLE_LEVELS
150 config ARCH_SUPPORTS_UPROBES
151 def_bool y if SPARC64
153 menu "Processor type and features"
156 bool "Symmetric multi-processing support"
158 This enables support for systems with more than one CPU. If you have
159 a system with only one CPU, say N. If you have a system with more
162 If you say N here, the kernel will run on uni- and multiprocessor
163 machines, but will use only one CPU of a multiprocessor machine. If
164 you say Y here, the kernel will run on many, but not all,
165 uniprocessor machines. On a uniprocessor machine, the kernel
166 will run faster if you say N here.
168 People using multiprocessor machines who say Y here should also say
169 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
170 Management" code will be disabled if you say Y here.
172 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
173 available at <https://www.tldp.org/docs.html#howto>.
175 If you don't know what to do here, say N.
178 int "Maximum number of CPUs"
180 range 2 32 if SPARC32
181 range 2 4096 if SPARC64
182 default 32 if SPARC32
183 default 4096 if SPARC64
185 source "kernel/Kconfig.hz"
187 config GENERIC_HWEIGHT
191 config GENERIC_CALIBRATE_DELAY
195 config ARCH_MAY_HAVE_PC_FDC
199 config EMULATED_CMPXCHG
203 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
204 is emulated, and therefore it is not completely atomic.
210 depends on SPARC32 && SMP
215 depends on SPARC64 && SMP
218 bool "Support for early boot text console"
222 Say Y here to enable a faster early framebuffer boot console.
225 bool "Support for hot-pluggable CPUs"
226 depends on SPARC64 && SMP
228 Say Y here to experiment with turning CPUs off and on. CPUs
229 can be controlled through /sys/devices/system/cpu/cpu#.
230 Say N if you want to disable CPU hotplug.
233 source "drivers/cpufreq/Kconfig"
237 tristate "UltraSPARC-III Memory Controller driver"
241 This adds a driver for the UltraSPARC-III memory controller.
242 Loading this driver allows exact mnemonic strings to be
243 printed in the event of a memory error, so that the faulty DIMM
244 on the motherboard can be matched to the error.
246 If in doubt, say Y, as this information can be very useful.
248 # Global things across all Sun machines.
249 config GENERIC_LOCKBREAK
252 depends on SPARC64 && SMP && PREEMPTION
256 depends on SPARC64 && SMP
259 int "Maximum NUMA Nodes (as a power of 2)"
264 Specify the maximum number of NUMA Nodes available on the target
265 system. Increases memory reserved to accommodate various tables.
267 config ARCH_SPARSEMEM_ENABLE
268 def_bool y if SPARC64
269 select SPARSEMEM_VMEMMAP_ENABLE
271 config ARCH_SPARSEMEM_DEFAULT
272 def_bool y if SPARC64
274 config FORCE_MAX_ZONEORDER
275 int "Maximum zone order"
278 The kernel memory allocator divides physically contiguous memory
279 blocks into "zones", where each zone is a power of two number of
280 pages. This option selects the largest power of two that the kernel
281 keeps in the memory allocator. If you need to allocate very large
282 blocks of physically contiguous memory, then you may need to
285 This config option is actually maximum order plus one. For example,
286 a value of 13 means that the largest free memory block is 2^12 pages.
289 source "kernel/power/Kconfig"
293 bool "SMT (Hyperthreading) scheduler support"
294 depends on SPARC64 && SMP
297 SMT scheduler support improves the CPU scheduler's decision making
298 when dealing with SPARC cpus at a cost of slightly increased overhead
299 in some places. If unsure say N here.
302 bool "Multi-core scheduler support"
303 depends on SPARC64 && SMP
306 Multi-core scheduler support improves the CPU scheduler's decision
307 making when dealing with multi-core CPU chips at a cost of slightly
308 increased overhead in some places. If unsure say N here.
311 bool "Default bootloader kernel arguments"
315 string "Initial kernel command string"
316 depends on CMDLINE_BOOL
317 default "console=ttyS0,9600 root=/dev/sda1"
319 Say Y here if you want to be able to pass default arguments to
320 the kernel. This will be overridden by the bootloader, if you
321 use one (such as SILO). This is most useful if you want to boot
322 a kernel from TFTP, and want default options to be available
323 with having them passed on the command line.
325 NOTE: This option WILL override the PROM bootargs setting!
331 Enable power management and CPU standby features on supported
335 tristate "Sun4m LED driver"
338 This driver toggles the front-panel LED on sun4m systems
339 in a user-specifiable manner. Its state can be probed
340 by reading /proc/led and its blinking mode can be changed
341 via writes to /proc/led
343 config SERIAL_CONSOLE
348 If you say Y here, it will be possible to use a serial port as the
349 system console (the system console is the device which receives all
350 kernel messages and warnings and which allows logins in single user
351 mode). This could be useful if some terminal or printer is connected
354 Even if you say Y here, the currently visible virtual console
355 (/dev/tty0) will still be used as the system console by default, but
356 you can alter that using a kernel command line option such as
357 "console=ttyS1". (Try "man bootparam" or see the documentation of
358 your boot loader (silo) about how to pass options to the kernel at
361 If you don't have a graphics card installed and you say Y here, the
362 kernel will automatically use the first serial line, /dev/ttyS0, as
368 bool "Sparc Leon processor family"
370 select USB_EHCI_BIG_ENDIAN_MMIO
371 select USB_EHCI_BIG_ENDIAN_DESC
372 select USB_UHCI_BIG_ENDIAN_MMIO
373 select USB_UHCI_BIG_ENDIAN_DESC
375 If you say Y here if you are running on a SPARC-LEON processor.
376 The LEON processor is a synthesizable VHDL model of the
377 SPARC-v8 standard. LEON is part of the GRLIB collection of
378 IP cores that are distributed under GPL. GRLIB can be downloaded
379 from www.gaisler.com. You can download a sparc-linux cross-compilation
380 toolchain at www.gaisler.com.
383 menu "U-Boot options"
385 config UBOOT_LOAD_ADDR
386 hex "uImage Load Address"
389 U-Boot kernel load address, the address in physical address space
390 where u-boot will place the Linux kernel before booting it.
391 This address is normally the base address of main memory + 0x4000.
393 config UBOOT_FLASH_ADDR
394 hex "uImage.o Load Address"
397 Optional setting only affecting the uImage.o ELF-image used to
398 download the uImage file to the target using a ELF-loader other than
399 U-Boot. It may for example be used to download an uImage to FLASH with
400 the GRMON utility before even starting u-boot.
402 config UBOOT_ENTRY_ADDR
403 hex "uImage Entry Address"
406 Do not change this unless you know what you're doing. This is
407 hardcoded by the SPARC32 and LEON port.
409 This is the virtual address u-boot jumps to when booting the Linux
417 menu "Bus options (PCI etc.)"
427 bool "Sun Logical Domains support"
430 Say Y here is you want to support virtual devices via
435 depends on PCI && SPARC32 && !SPARC_LEON
440 depends on PCI && SPARC_LEON
444 bool "GRPCI Host Bridge Support"
448 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
449 PCI host controller is typically found in GRLIB SPARC32/LEON
450 systems. The driver has one property (all_pci_errors) controlled
451 from the bootloader that makes the GRPCI to generate interrupts
452 on detected PCI Parity and System errors.
455 bool "GRPCI2 Host Bridge Support"
459 Say Y here to include the GRPCI2 Host Bridge Driver.
461 config SUN_OPENPROMFS
462 tristate "Openprom tree appears in /proc/openprom"
464 If you say Y, the OpenPROM device tree will be available as a
465 virtual file system, which you can mount to /proc/openprom by "mount
466 -t openpromfs none /proc/openprom".
468 To compile the /proc/openprom support as a module, choose M here: the
469 module will be called openpromfs.
471 Only choose N if you know in advance that you will not need to modify
472 OpenPROM settings on the running system.
478 depends on SPARC64 && PCI
480 config SPARC64_PCI_MSI
483 depends on SPARC64_PCI && PCI_MSI
492 select ARCH_WANT_OLD_COMPAT_IPC
493 select COMPAT_OLD_SIGACTION
495 config SYSVIPC_COMPAT
497 depends on COMPAT && SYSVIPC
500 source "drivers/sbus/char/Kconfig"