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
36 select HAVE_HARDLOCKUP_DETECTOR_SPARC64 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 MODULES_USE_ELF_RELA
42 select PCI_SYSCALL if PCI
43 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
44 select ODD_RT_SIGACTION
46 select CPU_NO_EFFICIENT_FFS
47 select LOCKDEP_SMALL if LOCKDEP
48 select NEED_DMA_MAP_STATE
49 select NEED_SG_DMA_LENGTH
50 select TRACE_IRQFLAGS_SUPPORT
54 select ARCH_32BIT_OFF_T
55 select ARCH_HAS_CPU_FINALIZE_INIT if !SMP
56 select ARCH_HAS_SYNC_DMA_FOR_CPU
58 select DMA_DIRECT_REMAP
59 select GENERIC_ATOMIC64
61 select LOCK_MM_AND_FIND_VMA
67 select ALTERNATE_USER_ADDRESS_SPACE
68 select HAVE_FUNCTION_TRACER
69 select HAVE_FUNCTION_GRAPH_TRACER
70 select HAVE_KRETPROBES
72 select MMU_GATHER_RCU_TABLE_FREE if SMP
73 select MMU_GATHER_MERGE_VMAS
74 select MMU_GATHER_NO_FLUSH_CACHE
75 select HAVE_ARCH_TRANSPARENT_HUGEPAGE
76 select HAVE_DYNAMIC_FTRACE
77 select HAVE_FTRACE_MCOUNT_RECORD
78 select HAVE_SYSCALL_TRACEPOINTS
79 select HAVE_CONTEXT_TRACKING_USER
81 select HAVE_DEBUG_KMEMLEAK
87 select RTC_DRV_STARFIRE
88 select HAVE_PERF_EVENTS
89 select PERF_USE_VMALLOC
90 select ARCH_HAVE_NMI_SAFE_CMPXCHG
91 select HAVE_C_RECORDMCOUNT
92 select HAVE_ARCH_AUDITSYSCALL
93 select ARCH_SUPPORTS_ATOMIC_RMW
94 select ARCH_SUPPORTS_DEBUG_PAGEALLOC
96 select HAVE_REGS_AND_STACK_ACCESS_API
97 select ARCH_USE_QUEUED_RWLOCKS
98 select ARCH_USE_QUEUED_SPINLOCKS
99 select GENERIC_TIME_VSYSCALL
100 select ARCH_CLOCKSOURCE_DATA
101 select ARCH_HAS_PTE_SPECIAL
102 select PCI_DOMAINS if PCI
103 select ARCH_HAS_GIGANTIC_PAGE
104 select HAVE_SOFTIRQ_ON_OWN_STACK
105 select HAVE_SETUP_PER_CPU_AREA
106 select NEED_PER_CPU_EMBED_FIRST_CHUNK
107 select NEED_PER_CPU_PAGE_FIRST_CHUNK
109 config ARCH_PROC_KCORE_TEXT
112 config CPU_BIG_ENDIAN
119 config STACKTRACE_SUPPORT
123 config LOCKDEP_SUPPORT
127 config ARCH_HIBERNATION_POSSIBLE
128 def_bool y if SPARC64
143 config GENERIC_ISA_DMA
147 config PGTABLE_LEVELS
151 config ARCH_SUPPORTS_UPROBES
152 def_bool y if SPARC64
154 menu "Processor type and features"
157 bool "Symmetric multi-processing support"
159 This enables support for systems with more than one CPU. If you have
160 a system with only one CPU, say N. If you have a system with more
163 If you say N here, the kernel will run on uni- and multiprocessor
164 machines, but will use only one CPU of a multiprocessor machine. If
165 you say Y here, the kernel will run on many, but not all,
166 uniprocessor machines. On a uniprocessor machine, the kernel
167 will run faster if you say N here.
169 People using multiprocessor machines who say Y here should also say
170 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
171 Management" code will be disabled if you say Y here.
173 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
174 available at <https://www.tldp.org/docs.html#howto>.
176 If you don't know what to do here, say N.
179 int "Maximum number of CPUs"
181 range 2 32 if SPARC32
182 range 2 4096 if SPARC64
183 default 32 if SPARC32
184 default 4096 if SPARC64
186 source "kernel/Kconfig.hz"
188 config GENERIC_HWEIGHT
192 config GENERIC_CALIBRATE_DELAY
196 config ARCH_MAY_HAVE_PC_FDC
200 config EMULATED_CMPXCHG
204 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
205 is emulated, and therefore it is not completely atomic.
211 depends on SPARC32 && SMP
216 depends on SPARC64 && SMP
219 bool "Support for early boot text console"
223 Say Y here to enable a faster early framebuffer boot console.
226 bool "Support for hot-pluggable CPUs"
227 depends on SPARC64 && SMP
229 Say Y here to experiment with turning CPUs off and on. CPUs
230 can be controlled through /sys/devices/system/cpu/cpu#.
231 Say N if you want to disable CPU hotplug.
234 source "drivers/cpufreq/Kconfig"
238 tristate "UltraSPARC-III Memory Controller driver"
242 This adds a driver for the UltraSPARC-III memory controller.
243 Loading this driver allows exact mnemonic strings to be
244 printed in the event of a memory error, so that the faulty DIMM
245 on the motherboard can be matched to the error.
247 If in doubt, say Y, as this information can be very useful.
249 # Global things across all Sun machines.
250 config GENERIC_LOCKBREAK
253 depends on SPARC64 && SMP && PREEMPTION
257 depends on SPARC64 && SMP
260 int "Maximum NUMA Nodes (as a power of 2)"
265 Specify the maximum number of NUMA Nodes available on the target
266 system. Increases memory reserved to accommodate various tables.
268 config ARCH_SPARSEMEM_ENABLE
269 def_bool y if SPARC64
270 select SPARSEMEM_VMEMMAP_ENABLE
272 config ARCH_SPARSEMEM_DEFAULT
273 def_bool y if SPARC64
275 config ARCH_FORCE_MAX_ORDER
276 int "Order of maximal physically contiguous allocations"
279 The kernel page allocator limits the size of maximal physically
280 contiguous allocations. The limit is called MAX_ORDER and it
281 defines the maximal power of two of number of pages that can be
282 allocated as a single contiguous block. This option allows
283 overriding the default setting when ability to allocate very
284 large blocks of physically contiguous memory is required.
286 Don't change if unsure.
288 if SPARC64 || COMPILE_TEST
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 source "drivers/sbus/char/Kconfig"