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
57 select ARCH_32BIT_OFF_T
58 select ARCH_HAS_SYNC_DMA_FOR_CPU
59 select GENERIC_ATOMIC64
66 select HAVE_FUNCTION_TRACER
67 select HAVE_FUNCTION_GRAPH_TRACER
68 select HAVE_KRETPROBES
70 select MMU_GATHER_RCU_TABLE_FREE if SMP
71 select HAVE_ARCH_TRANSPARENT_HUGEPAGE
72 select HAVE_DYNAMIC_FTRACE
73 select HAVE_FTRACE_MCOUNT_RECORD
74 select HAVE_SYSCALL_TRACEPOINTS
75 select HAVE_CONTEXT_TRACKING
77 select HAVE_DEBUG_KMEMLEAK
83 select RTC_DRV_STARFIRE
84 select HAVE_PERF_EVENTS
85 select PERF_USE_VMALLOC
86 select ARCH_HAVE_NMI_SAFE_CMPXCHG
87 select HAVE_C_RECORDMCOUNT
88 select HAVE_ARCH_AUDITSYSCALL
89 select ARCH_SUPPORTS_ATOMIC_RMW
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
100 config ARCH_PROC_KCORE_TEXT
103 config CPU_BIG_ENDIAN
110 config STACKTRACE_SUPPORT
114 config LOCKDEP_SUPPORT
118 config ARCH_HIBERNATION_POSSIBLE
119 def_bool y if SPARC64
125 config HAVE_SETUP_PER_CPU_AREA
126 def_bool y if SPARC64
128 config NEED_PER_CPU_EMBED_FIRST_CHUNK
129 def_bool y if SPARC64
131 config NEED_PER_CPU_PAGE_FIRST_CHUNK
132 def_bool y if SPARC64
146 config GENERIC_ISA_DMA
150 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
151 def_bool y if SPARC64
153 config PGTABLE_LEVELS
157 config ARCH_SUPPORTS_UPROBES
158 def_bool y if SPARC64
160 menu "Processor type and features"
163 bool "Symmetric multi-processing support"
165 This enables support for systems with more than one CPU. If you have
166 a system with only one CPU, say N. If you have a system with more
169 If you say N here, the kernel will run on uni- and multiprocessor
170 machines, but will use only one CPU of a multiprocessor machine. If
171 you say Y here, the kernel will run on many, but not all,
172 uniprocessor machines. On a uniprocessor machine, the kernel
173 will run faster if you say N here.
175 People using multiprocessor machines who say Y here should also say
176 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
177 Management" code will be disabled if you say Y here.
179 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
180 available at <http://www.tldp.org/docs.html#howto>.
182 If you don't know what to do here, say N.
185 int "Maximum number of CPUs"
187 range 2 32 if SPARC32
188 range 2 4096 if SPARC64
189 default 32 if SPARC32
190 default 4096 if SPARC64
192 source "kernel/Kconfig.hz"
194 config GENERIC_HWEIGHT
198 config GENERIC_CALIBRATE_DELAY
202 config ARCH_MAY_HAVE_PC_FDC
206 config EMULATED_CMPXCHG
210 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
211 is emulated, and therefore it is not completely atomic.
217 depends on SPARC32 && SMP
222 depends on SPARC64 && SMP
225 bool "Support for early boot text console"
229 Say Y here to enable a faster early framebuffer boot console.
232 bool "Support for hot-pluggable CPUs"
233 depends on SPARC64 && SMP
235 Say Y here to experiment with turning CPUs off and on. CPUs
236 can be controlled through /sys/devices/system/cpu/cpu#.
237 Say N if you want to disable CPU hotplug.
240 source "drivers/cpufreq/Kconfig"
244 tristate "UltraSPARC-III Memory Controller driver"
248 This adds a driver for the UltraSPARC-III memory controller.
249 Loading this driver allows exact mnemonic strings to be
250 printed in the event of a memory error, so that the faulty DIMM
251 on the motherboard can be matched to the error.
253 If in doubt, say Y, as this information can be very useful.
255 # Global things across all Sun machines.
256 config GENERIC_LOCKBREAK
259 depends on SPARC64 && SMP && PREEMPTION
263 depends on SPARC64 && SMP
266 int "Maximum NUMA Nodes (as a power of 2)"
269 depends on NEED_MULTIPLE_NODES
271 Specify the maximum number of NUMA Nodes available on the target
272 system. Increases memory reserved to accommodate various tables.
274 config ARCH_SPARSEMEM_ENABLE
275 def_bool y if SPARC64
276 select SPARSEMEM_VMEMMAP_ENABLE
278 config ARCH_SPARSEMEM_DEFAULT
279 def_bool y if SPARC64
281 config FORCE_MAX_ZONEORDER
282 int "Maximum zone order"
285 The kernel memory allocator divides physically contiguous memory
286 blocks into "zones", where each zone is a power of two number of
287 pages. This option selects the largest power of two that the kernel
288 keeps in the memory allocator. If you need to allocate very large
289 blocks of physically contiguous memory, then you may need to
292 This config option is actually maximum order plus one. For example,
293 a value of 13 means that the largest free memory block is 2^12 pages.
296 source "kernel/power/Kconfig"
300 bool "SMT (Hyperthreading) scheduler support"
301 depends on SPARC64 && SMP
304 SMT scheduler support improves the CPU scheduler's decision making
305 when dealing with SPARC cpus at a cost of slightly increased overhead
306 in some places. If unsure say N here.
309 bool "Multi-core scheduler support"
310 depends on SPARC64 && SMP
313 Multi-core scheduler support improves the CPU scheduler's decision
314 making when dealing with multi-core CPU chips at a cost of slightly
315 increased overhead in some places. If unsure say N here.
318 bool "Default bootloader kernel arguments"
322 string "Initial kernel command string"
323 depends on CMDLINE_BOOL
324 default "console=ttyS0,9600 root=/dev/sda1"
326 Say Y here if you want to be able to pass default arguments to
327 the kernel. This will be overridden by the bootloader, if you
328 use one (such as SILO). This is most useful if you want to boot
329 a kernel from TFTP, and want default options to be available
330 with having them passed on the command line.
332 NOTE: This option WILL override the PROM bootargs setting!
338 Enable power management and CPU standby features on supported
342 tristate "Sun4m LED driver"
345 This driver toggles the front-panel LED on sun4m systems
346 in a user-specifiable manner. Its state can be probed
347 by reading /proc/led and its blinking mode can be changed
348 via writes to /proc/led
350 config SERIAL_CONSOLE
355 If you say Y here, it will be possible to use a serial port as the
356 system console (the system console is the device which receives all
357 kernel messages and warnings and which allows logins in single user
358 mode). This could be useful if some terminal or printer is connected
361 Even if you say Y here, the currently visible virtual console
362 (/dev/tty0) will still be used as the system console by default, but
363 you can alter that using a kernel command line option such as
364 "console=ttyS1". (Try "man bootparam" or see the documentation of
365 your boot loader (silo) about how to pass options to the kernel at
368 If you don't have a graphics card installed and you say Y here, the
369 kernel will automatically use the first serial line, /dev/ttyS0, as
375 bool "Sparc Leon processor family"
377 select USB_EHCI_BIG_ENDIAN_MMIO
378 select USB_EHCI_BIG_ENDIAN_DESC
379 select USB_UHCI_BIG_ENDIAN_MMIO
380 select USB_UHCI_BIG_ENDIAN_DESC
382 If you say Y here if you are running on a SPARC-LEON processor.
383 The LEON processor is a synthesizable VHDL model of the
384 SPARC-v8 standard. LEON is part of the GRLIB collection of
385 IP cores that are distributed under GPL. GRLIB can be downloaded
386 from www.gaisler.com. You can download a sparc-linux cross-compilation
387 toolchain at www.gaisler.com.
390 menu "U-Boot options"
392 config UBOOT_LOAD_ADDR
393 hex "uImage Load Address"
396 U-Boot kernel load address, the address in physical address space
397 where u-boot will place the Linux kernel before booting it.
398 This address is normally the base address of main memory + 0x4000.
400 config UBOOT_FLASH_ADDR
401 hex "uImage.o Load Address"
404 Optional setting only affecting the uImage.o ELF-image used to
405 download the uImage file to the target using a ELF-loader other than
406 U-Boot. It may for example be used to download an uImage to FLASH with
407 the GRMON utility before even starting u-boot.
409 config UBOOT_ENTRY_ADDR
410 hex "uImage Entry Address"
413 Do not change this unless you know what you're doing. This is
414 hardcoded by the SPARC32 and LEON port.
416 This is the virtual address u-boot jumps to when booting the Linux
424 menu "Bus options (PCI etc.)"
434 bool "Sun Logical Domains support"
437 Say Y here is you want to support virtual devices via
442 depends on PCI && SPARC32 && !SPARC_LEON
447 depends on PCI && SPARC_LEON
451 bool "GRPCI Host Bridge Support"
455 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
456 PCI host controller is typically found in GRLIB SPARC32/LEON
457 systems. The driver has one property (all_pci_errors) controlled
458 from the bootloader that makes the GRPCI to generate interrupts
459 on detected PCI Parity and System errors.
462 bool "GRPCI2 Host Bridge Support"
466 Say Y here to include the GRPCI2 Host Bridge Driver.
468 config SUN_OPENPROMFS
469 tristate "Openprom tree appears in /proc/openprom"
471 If you say Y, the OpenPROM device tree will be available as a
472 virtual file system, which you can mount to /proc/openprom by "mount
473 -t openpromfs none /proc/openprom".
475 To compile the /proc/openprom support as a module, choose M here: the
476 module will be called openpromfs.
478 Only choose N if you know in advance that you will not need to modify
479 OpenPROM settings on the running system.
485 depends on SPARC64 && PCI
487 config SPARC64_PCI_MSI
490 depends on SPARC64_PCI && PCI_MSI
498 select COMPAT_BINFMT_ELF
500 select ARCH_WANT_OLD_COMPAT_IPC
501 select COMPAT_OLD_SIGACTION
503 config SYSVIPC_COMPAT
505 depends on COMPAT && SYSVIPC
508 source "drivers/sbus/char/Kconfig"