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
24 select HAVE_ARCH_KGDB if !SMP || SPARC64
25 select HAVE_ARCH_TRACEHOOK
26 select HAVE_ARCH_SECCOMP if SPARC64
27 select HAVE_EXIT_THREAD
29 select SYSCTL_EXCEPTION_TRACE
33 select HAVE_ARCH_JUMP_LABEL if SPARC64
34 select GENERIC_IRQ_SHOW
35 select ARCH_WANT_IPC_PARSE_VERSION
36 select GENERIC_PCI_IOMAP
37 select HAVE_NMI_WATCHDOG if SPARC64
38 select HAVE_CBPF_JIT if SPARC32
39 select HAVE_EBPF_JIT if SPARC64
40 select HAVE_DEBUG_BUGVERBOSE
41 select GENERIC_SMP_IDLE_THREAD
42 select GENERIC_CLOCKEVENTS
43 select GENERIC_STRNCPY_FROM_USER
44 select GENERIC_STRNLEN_USER
45 select MODULES_USE_ELF_RELA
46 select PCI_SYSCALL if PCI
47 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
48 select ODD_RT_SIGACTION
50 select CPU_NO_EFFICIENT_FFS
51 select LOCKDEP_SMALL if LOCKDEP
52 select NEED_DMA_MAP_STATE
53 select NEED_SG_DMA_LENGTH
58 select ARCH_32BIT_OFF_T
59 select ARCH_HAS_SYNC_DMA_FOR_CPU
60 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
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
101 config ARCH_PROC_KCORE_TEXT
104 config CPU_BIG_ENDIAN
111 config STACKTRACE_SUPPORT
115 config LOCKDEP_SUPPORT
119 config ARCH_HIBERNATION_POSSIBLE
120 def_bool y if SPARC64
126 config HAVE_SETUP_PER_CPU_AREA
127 def_bool y if SPARC64
129 config NEED_PER_CPU_EMBED_FIRST_CHUNK
130 def_bool y if SPARC64
132 config NEED_PER_CPU_PAGE_FIRST_CHUNK
133 def_bool y if SPARC64
147 config GENERIC_ISA_DMA
151 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
152 def_bool y if SPARC64
154 config PGTABLE_LEVELS
158 config ARCH_SUPPORTS_UPROBES
159 def_bool y if SPARC64
161 menu "Processor type and features"
164 bool "Symmetric multi-processing support"
166 This enables support for systems with more than one CPU. If you have
167 a system with only one CPU, say N. If you have a system with more
170 If you say N here, the kernel will run on uni- and multiprocessor
171 machines, but will use only one CPU of a multiprocessor machine. If
172 you say Y here, the kernel will run on many, but not all,
173 uniprocessor machines. On a uniprocessor machine, the kernel
174 will run faster if you say N here.
176 People using multiprocessor machines who say Y here should also say
177 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
178 Management" code will be disabled if you say Y here.
180 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
181 available at <http://www.tldp.org/docs.html#howto>.
183 If you don't know what to do here, say N.
186 int "Maximum number of CPUs"
188 range 2 32 if SPARC32
189 range 2 4096 if SPARC64
190 default 32 if SPARC32
191 default 4096 if SPARC64
193 source "kernel/Kconfig.hz"
195 config GENERIC_HWEIGHT
199 config GENERIC_CALIBRATE_DELAY
203 config ARCH_MAY_HAVE_PC_FDC
207 config EMULATED_CMPXCHG
211 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
212 is emulated, and therefore it is not completely atomic.
218 depends on SPARC32 && SMP
223 depends on SPARC64 && SMP
226 bool "Support for early boot text console"
230 Say Y here to enable a faster early framebuffer boot console.
233 bool "Support for hot-pluggable CPUs"
234 depends on SPARC64 && SMP
236 Say Y here to experiment with turning CPUs off and on. CPUs
237 can be controlled through /sys/devices/system/cpu/cpu#.
238 Say N if you want to disable CPU hotplug.
241 source "drivers/cpufreq/Kconfig"
245 tristate "UltraSPARC-III Memory Controller driver"
249 This adds a driver for the UltraSPARC-III memory controller.
250 Loading this driver allows exact mnemonic strings to be
251 printed in the event of a memory error, so that the faulty DIMM
252 on the motherboard can be matched to the error.
254 If in doubt, say Y, as this information can be very useful.
256 # Global things across all Sun machines.
257 config GENERIC_LOCKBREAK
260 depends on SPARC64 && SMP && PREEMPTION
264 depends on SPARC64 && SMP
267 int "Maximum NUMA Nodes (as a power of 2)"
270 depends on NEED_MULTIPLE_NODES
272 Specify the maximum number of NUMA Nodes available on the target
273 system. Increases memory reserved to accommodate various tables.
275 config ARCH_SPARSEMEM_ENABLE
276 def_bool y if SPARC64
277 select SPARSEMEM_VMEMMAP_ENABLE
279 config ARCH_SPARSEMEM_DEFAULT
280 def_bool y if SPARC64
282 config FORCE_MAX_ZONEORDER
283 int "Maximum zone order"
286 The kernel memory allocator divides physically contiguous memory
287 blocks into "zones", where each zone is a power of two number of
288 pages. This option selects the largest power of two that the kernel
289 keeps in the memory allocator. If you need to allocate very large
290 blocks of physically contiguous memory, then you may need to
293 This config option is actually maximum order plus one. For example,
294 a value of 13 means that the largest free memory block is 2^12 pages.
297 source "kernel/power/Kconfig"
301 bool "SMT (Hyperthreading) scheduler support"
302 depends on SPARC64 && SMP
305 SMT scheduler support improves the CPU scheduler's decision making
306 when dealing with SPARC cpus at a cost of slightly increased overhead
307 in some places. If unsure say N here.
310 bool "Multi-core scheduler support"
311 depends on SPARC64 && SMP
314 Multi-core scheduler support improves the CPU scheduler's decision
315 making when dealing with multi-core CPU chips at a cost of slightly
316 increased overhead in some places. If unsure say N here.
319 bool "Default bootloader kernel arguments"
323 string "Initial kernel command string"
324 depends on CMDLINE_BOOL
325 default "console=ttyS0,9600 root=/dev/sda1"
327 Say Y here if you want to be able to pass default arguments to
328 the kernel. This will be overridden by the bootloader, if you
329 use one (such as SILO). This is most useful if you want to boot
330 a kernel from TFTP, and want default options to be available
331 with having them passed on the command line.
333 NOTE: This option WILL override the PROM bootargs setting!
339 Enable power management and CPU standby features on supported
343 tristate "Sun4m LED driver"
346 This driver toggles the front-panel LED on sun4m systems
347 in a user-specifiable manner. Its state can be probed
348 by reading /proc/led and its blinking mode can be changed
349 via writes to /proc/led
351 config SERIAL_CONSOLE
356 If you say Y here, it will be possible to use a serial port as the
357 system console (the system console is the device which receives all
358 kernel messages and warnings and which allows logins in single user
359 mode). This could be useful if some terminal or printer is connected
362 Even if you say Y here, the currently visible virtual console
363 (/dev/tty0) will still be used as the system console by default, but
364 you can alter that using a kernel command line option such as
365 "console=ttyS1". (Try "man bootparam" or see the documentation of
366 your boot loader (silo) about how to pass options to the kernel at
369 If you don't have a graphics card installed and you say Y here, the
370 kernel will automatically use the first serial line, /dev/ttyS0, as
376 bool "Sparc Leon processor family"
378 select USB_EHCI_BIG_ENDIAN_MMIO
379 select USB_EHCI_BIG_ENDIAN_DESC
380 select USB_UHCI_BIG_ENDIAN_MMIO
381 select USB_UHCI_BIG_ENDIAN_DESC
383 If you say Y here if you are running on a SPARC-LEON processor.
384 The LEON processor is a synthesizable VHDL model of the
385 SPARC-v8 standard. LEON is part of the GRLIB collection of
386 IP cores that are distributed under GPL. GRLIB can be downloaded
387 from www.gaisler.com. You can download a sparc-linux cross-compilation
388 toolchain at www.gaisler.com.
391 menu "U-Boot options"
393 config UBOOT_LOAD_ADDR
394 hex "uImage Load Address"
397 U-Boot kernel load address, the address in physical address space
398 where u-boot will place the Linux kernel before booting it.
399 This address is normally the base address of main memory + 0x4000.
401 config UBOOT_FLASH_ADDR
402 hex "uImage.o Load Address"
405 Optional setting only affecting the uImage.o ELF-image used to
406 download the uImage file to the target using a ELF-loader other than
407 U-Boot. It may for example be used to download an uImage to FLASH with
408 the GRMON utility before even starting u-boot.
410 config UBOOT_ENTRY_ADDR
411 hex "uImage Entry Address"
414 Do not change this unless you know what you're doing. This is
415 hardcoded by the SPARC32 and LEON port.
417 This is the virtual address u-boot jumps to when booting the Linux
425 menu "Bus options (PCI etc.)"
435 bool "Sun Logical Domains support"
438 Say Y here is you want to support virtual devices via
443 depends on PCI && SPARC32 && !SPARC_LEON
448 depends on PCI && SPARC_LEON
452 bool "GRPCI Host Bridge Support"
456 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
457 PCI host controller is typically found in GRLIB SPARC32/LEON
458 systems. The driver has one property (all_pci_errors) controlled
459 from the bootloader that makes the GRPCI to generate interrupts
460 on detected PCI Parity and System errors.
463 bool "GRPCI2 Host Bridge Support"
467 Say Y here to include the GRPCI2 Host Bridge Driver.
469 config SUN_OPENPROMFS
470 tristate "Openprom tree appears in /proc/openprom"
472 If you say Y, the OpenPROM device tree will be available as a
473 virtual file system, which you can mount to /proc/openprom by "mount
474 -t openpromfs none /proc/openprom".
476 To compile the /proc/openprom support as a module, choose M here: the
477 module will be called openpromfs.
479 Only choose N if you know in advance that you will not need to modify
480 OpenPROM settings on the running system.
486 depends on SPARC64 && PCI
488 config SPARC64_PCI_MSI
491 depends on SPARC64_PCI && PCI_MSI
499 select COMPAT_BINFMT_ELF
501 select ARCH_WANT_OLD_COMPAT_IPC
502 select COMPAT_OLD_SIGACTION
504 config SYSVIPC_COMPAT
506 depends on COMPAT && SYSVIPC
509 source "drivers/sbus/char/Kconfig"