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 HAVE_ARCH_AUDITSYSCALL
88 select ARCH_SUPPORTS_ATOMIC_RMW
89 select ARCH_SUPPORTS_DEBUG_PAGEALLOC
91 select HAVE_REGS_AND_STACK_ACCESS_API
92 select ARCH_USE_QUEUED_RWLOCKS
93 select ARCH_USE_QUEUED_SPINLOCKS
94 select GENERIC_TIME_VSYSCALL
95 select ARCH_CLOCKSOURCE_DATA
96 select ARCH_HAS_PTE_SPECIAL
97 select PCI_DOMAINS if PCI
98 select ARCH_HAS_GIGANTIC_PAGE
99 select HAVE_SOFTIRQ_ON_OWN_STACK
100 select HAVE_SETUP_PER_CPU_AREA
101 select NEED_PER_CPU_EMBED_FIRST_CHUNK
102 select NEED_PER_CPU_PAGE_FIRST_CHUNK
104 config ARCH_PROC_KCORE_TEXT
107 config CPU_BIG_ENDIAN
114 config STACKTRACE_SUPPORT
118 config LOCKDEP_SUPPORT
122 config ARCH_HIBERNATION_POSSIBLE
123 def_bool y if SPARC64
138 config GENERIC_ISA_DMA
142 config PGTABLE_LEVELS
146 config ARCH_SUPPORTS_UPROBES
147 def_bool y if SPARC64
149 menu "Processor type and features"
152 bool "Symmetric multi-processing support"
154 This enables support for systems with more than one CPU. If you have
155 a system with only one CPU, say N. If you have a system with more
158 If you say N here, the kernel will run on uni- and multiprocessor
159 machines, but will use only one CPU of a multiprocessor machine. If
160 you say Y here, the kernel will run on many, but not all,
161 uniprocessor machines. On a uniprocessor machine, the kernel
162 will run faster if you say N here.
164 People using multiprocessor machines who say Y here should also say
165 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
166 Management" code will be disabled if you say Y here.
168 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
169 available at <https://www.tldp.org/docs.html#howto>.
171 If you don't know what to do here, say N.
174 int "Maximum number of CPUs"
176 range 2 32 if SPARC32
177 range 2 4096 if SPARC64
178 default 32 if SPARC32
179 default 4096 if SPARC64
181 source "kernel/Kconfig.hz"
183 config GENERIC_HWEIGHT
187 config GENERIC_CALIBRATE_DELAY
191 config ARCH_MAY_HAVE_PC_FDC
195 config EMULATED_CMPXCHG
199 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
200 is emulated, and therefore it is not completely atomic.
206 depends on SPARC32 && SMP
211 depends on SPARC64 && SMP
214 bool "Support for early boot text console"
218 Say Y here to enable a faster early framebuffer boot console.
221 bool "Support for hot-pluggable CPUs"
222 depends on SPARC64 && SMP
224 Say Y here to experiment with turning CPUs off and on. CPUs
225 can be controlled through /sys/devices/system/cpu/cpu#.
226 Say N if you want to disable CPU hotplug.
229 source "drivers/cpufreq/Kconfig"
233 tristate "UltraSPARC-III Memory Controller driver"
237 This adds a driver for the UltraSPARC-III memory controller.
238 Loading this driver allows exact mnemonic strings to be
239 printed in the event of a memory error, so that the faulty DIMM
240 on the motherboard can be matched to the error.
242 If in doubt, say Y, as this information can be very useful.
244 # Global things across all Sun machines.
245 config GENERIC_LOCKBREAK
248 depends on SPARC64 && SMP && PREEMPTION
252 depends on SPARC64 && SMP
255 int "Maximum NUMA Nodes (as a power of 2)"
260 Specify the maximum number of NUMA Nodes available on the target
261 system. Increases memory reserved to accommodate various tables.
263 config ARCH_SPARSEMEM_ENABLE
264 def_bool y if SPARC64
265 select SPARSEMEM_VMEMMAP_ENABLE
267 config ARCH_SPARSEMEM_DEFAULT
268 def_bool y if SPARC64
270 config FORCE_MAX_ZONEORDER
271 int "Maximum zone order"
274 The kernel memory allocator divides physically contiguous memory
275 blocks into "zones", where each zone is a power of two number of
276 pages. This option selects the largest power of two that the kernel
277 keeps in the memory allocator. If you need to allocate very large
278 blocks of physically contiguous memory, then you may need to
281 This config option is actually maximum order plus one. For example,
282 a value of 13 means that the largest free memory block is 2^12 pages.
285 source "kernel/power/Kconfig"
289 bool "SMT (Hyperthreading) scheduler support"
290 depends on SPARC64 && SMP
293 SMT scheduler support improves the CPU scheduler's decision making
294 when dealing with SPARC cpus at a cost of slightly increased overhead
295 in some places. If unsure say N here.
298 bool "Multi-core scheduler support"
299 depends on SPARC64 && SMP
302 Multi-core scheduler support improves the CPU scheduler's decision
303 making when dealing with multi-core CPU chips at a cost of slightly
304 increased overhead in some places. If unsure say N here.
307 bool "Default bootloader kernel arguments"
311 string "Initial kernel command string"
312 depends on CMDLINE_BOOL
313 default "console=ttyS0,9600 root=/dev/sda1"
315 Say Y here if you want to be able to pass default arguments to
316 the kernel. This will be overridden by the bootloader, if you
317 use one (such as SILO). This is most useful if you want to boot
318 a kernel from TFTP, and want default options to be available
319 with having them passed on the command line.
321 NOTE: This option WILL override the PROM bootargs setting!
327 Enable power management and CPU standby features on supported
331 tristate "Sun4m LED driver"
334 This driver toggles the front-panel LED on sun4m systems
335 in a user-specifiable manner. Its state can be probed
336 by reading /proc/led and its blinking mode can be changed
337 via writes to /proc/led
339 config SERIAL_CONSOLE
344 If you say Y here, it will be possible to use a serial port as the
345 system console (the system console is the device which receives all
346 kernel messages and warnings and which allows logins in single user
347 mode). This could be useful if some terminal or printer is connected
350 Even if you say Y here, the currently visible virtual console
351 (/dev/tty0) will still be used as the system console by default, but
352 you can alter that using a kernel command line option such as
353 "console=ttyS1". (Try "man bootparam" or see the documentation of
354 your boot loader (silo) about how to pass options to the kernel at
357 If you don't have a graphics card installed and you say Y here, the
358 kernel will automatically use the first serial line, /dev/ttyS0, as
364 bool "Sparc Leon processor family"
366 select USB_EHCI_BIG_ENDIAN_MMIO
367 select USB_EHCI_BIG_ENDIAN_DESC
368 select USB_UHCI_BIG_ENDIAN_MMIO
369 select USB_UHCI_BIG_ENDIAN_DESC
371 If you say Y here if you are running on a SPARC-LEON processor.
372 The LEON processor is a synthesizable VHDL model of the
373 SPARC-v8 standard. LEON is part of the GRLIB collection of
374 IP cores that are distributed under GPL. GRLIB can be downloaded
375 from www.gaisler.com. You can download a sparc-linux cross-compilation
376 toolchain at www.gaisler.com.
379 menu "U-Boot options"
381 config UBOOT_LOAD_ADDR
382 hex "uImage Load Address"
385 U-Boot kernel load address, the address in physical address space
386 where u-boot will place the Linux kernel before booting it.
387 This address is normally the base address of main memory + 0x4000.
389 config UBOOT_FLASH_ADDR
390 hex "uImage.o Load Address"
393 Optional setting only affecting the uImage.o ELF-image used to
394 download the uImage file to the target using a ELF-loader other than
395 U-Boot. It may for example be used to download an uImage to FLASH with
396 the GRMON utility before even starting u-boot.
398 config UBOOT_ENTRY_ADDR
399 hex "uImage Entry Address"
402 Do not change this unless you know what you're doing. This is
403 hardcoded by the SPARC32 and LEON port.
405 This is the virtual address u-boot jumps to when booting the Linux
413 menu "Bus options (PCI etc.)"
423 bool "Sun Logical Domains support"
426 Say Y here is you want to support virtual devices via
431 depends on PCI && SPARC32 && !SPARC_LEON
436 depends on PCI && SPARC_LEON
440 bool "GRPCI Host Bridge Support"
444 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
445 PCI host controller is typically found in GRLIB SPARC32/LEON
446 systems. The driver has one property (all_pci_errors) controlled
447 from the bootloader that makes the GRPCI to generate interrupts
448 on detected PCI Parity and System errors.
451 bool "GRPCI2 Host Bridge Support"
455 Say Y here to include the GRPCI2 Host Bridge Driver.
457 config SUN_OPENPROMFS
458 tristate "Openprom tree appears in /proc/openprom"
460 If you say Y, the OpenPROM device tree will be available as a
461 virtual file system, which you can mount to /proc/openprom by "mount
462 -t openpromfs none /proc/openprom".
464 To compile the /proc/openprom support as a module, choose M here: the
465 module will be called openpromfs.
467 Only choose N if you know in advance that you will not need to modify
468 OpenPROM settings on the running system.
474 depends on SPARC64 && PCI
476 config SPARC64_PCI_MSI
479 depends on SPARC64_PCI && PCI_MSI
488 select ARCH_WANT_OLD_COMPAT_IPC
489 select COMPAT_OLD_SIGACTION
491 config SYSVIPC_COMPAT
493 depends on COMPAT && SYSVIPC
496 source "drivers/sbus/char/Kconfig"