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_STRNCPY_FROM_USER
43 select GENERIC_STRNLEN_USER
44 select MODULES_USE_ELF_RELA
45 select PCI_SYSCALL if PCI
46 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
47 select ODD_RT_SIGACTION
49 select CPU_NO_EFFICIENT_FFS
50 select LOCKDEP_SMALL if LOCKDEP
51 select NEED_DMA_MAP_STATE
52 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
90 select ARCH_SUPPORTS_DEBUG_PAGEALLOC
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
148 config GENERIC_ISA_DMA
152 config PGTABLE_LEVELS
156 config ARCH_SUPPORTS_UPROBES
157 def_bool y if SPARC64
159 menu "Processor type and features"
162 bool "Symmetric multi-processing support"
164 This enables support for systems with more than one CPU. If you have
165 a system with only one CPU, say N. If you have a system with more
168 If you say N here, the kernel will run on uni- and multiprocessor
169 machines, but will use only one CPU of a multiprocessor machine. If
170 you say Y here, the kernel will run on many, but not all,
171 uniprocessor machines. On a uniprocessor machine, the kernel
172 will run faster if you say N here.
174 People using multiprocessor machines who say Y here should also say
175 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
176 Management" code will be disabled if you say Y here.
178 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
179 available at <http://www.tldp.org/docs.html#howto>.
181 If you don't know what to do here, say N.
184 int "Maximum number of CPUs"
186 range 2 32 if SPARC32
187 range 2 4096 if SPARC64
188 default 32 if SPARC32
189 default 4096 if SPARC64
191 source "kernel/Kconfig.hz"
193 config GENERIC_HWEIGHT
197 config GENERIC_CALIBRATE_DELAY
201 config ARCH_MAY_HAVE_PC_FDC
205 config EMULATED_CMPXCHG
209 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
210 is emulated, and therefore it is not completely atomic.
216 depends on SPARC32 && SMP
221 depends on SPARC64 && SMP
224 bool "Support for early boot text console"
228 Say Y here to enable a faster early framebuffer boot console.
231 bool "Support for hot-pluggable CPUs"
232 depends on SPARC64 && SMP
234 Say Y here to experiment with turning CPUs off and on. CPUs
235 can be controlled through /sys/devices/system/cpu/cpu#.
236 Say N if you want to disable CPU hotplug.
239 source "drivers/cpufreq/Kconfig"
243 tristate "UltraSPARC-III Memory Controller driver"
247 This adds a driver for the UltraSPARC-III memory controller.
248 Loading this driver allows exact mnemonic strings to be
249 printed in the event of a memory error, so that the faulty DIMM
250 on the motherboard can be matched to the error.
252 If in doubt, say Y, as this information can be very useful.
254 # Global things across all Sun machines.
255 config GENERIC_LOCKBREAK
258 depends on SPARC64 && SMP && PREEMPTION
262 depends on SPARC64 && SMP
265 int "Maximum NUMA Nodes (as a power of 2)"
268 depends on NEED_MULTIPLE_NODES
270 Specify the maximum number of NUMA Nodes available on the target
271 system. Increases memory reserved to accommodate various tables.
273 config ARCH_SPARSEMEM_ENABLE
274 def_bool y if SPARC64
275 select SPARSEMEM_VMEMMAP_ENABLE
277 config ARCH_SPARSEMEM_DEFAULT
278 def_bool y if SPARC64
280 config FORCE_MAX_ZONEORDER
281 int "Maximum zone order"
284 The kernel memory allocator divides physically contiguous memory
285 blocks into "zones", where each zone is a power of two number of
286 pages. This option selects the largest power of two that the kernel
287 keeps in the memory allocator. If you need to allocate very large
288 blocks of physically contiguous memory, then you may need to
291 This config option is actually maximum order plus one. For example,
292 a value of 13 means that the largest free memory block is 2^12 pages.
295 source "kernel/power/Kconfig"
299 bool "SMT (Hyperthreading) scheduler support"
300 depends on SPARC64 && SMP
303 SMT scheduler support improves the CPU scheduler's decision making
304 when dealing with SPARC cpus at a cost of slightly increased overhead
305 in some places. If unsure say N here.
308 bool "Multi-core scheduler support"
309 depends on SPARC64 && SMP
312 Multi-core scheduler support improves the CPU scheduler's decision
313 making when dealing with multi-core CPU chips at a cost of slightly
314 increased overhead in some places. If unsure say N here.
317 bool "Default bootloader kernel arguments"
321 string "Initial kernel command string"
322 depends on CMDLINE_BOOL
323 default "console=ttyS0,9600 root=/dev/sda1"
325 Say Y here if you want to be able to pass default arguments to
326 the kernel. This will be overridden by the bootloader, if you
327 use one (such as SILO). This is most useful if you want to boot
328 a kernel from TFTP, and want default options to be available
329 with having them passed on the command line.
331 NOTE: This option WILL override the PROM bootargs setting!
337 Enable power management and CPU standby features on supported
341 tristate "Sun4m LED driver"
344 This driver toggles the front-panel LED on sun4m systems
345 in a user-specifiable manner. Its state can be probed
346 by reading /proc/led and its blinking mode can be changed
347 via writes to /proc/led
349 config SERIAL_CONSOLE
354 If you say Y here, it will be possible to use a serial port as the
355 system console (the system console is the device which receives all
356 kernel messages and warnings and which allows logins in single user
357 mode). This could be useful if some terminal or printer is connected
360 Even if you say Y here, the currently visible virtual console
361 (/dev/tty0) will still be used as the system console by default, but
362 you can alter that using a kernel command line option such as
363 "console=ttyS1". (Try "man bootparam" or see the documentation of
364 your boot loader (silo) about how to pass options to the kernel at
367 If you don't have a graphics card installed and you say Y here, the
368 kernel will automatically use the first serial line, /dev/ttyS0, as
374 bool "Sparc Leon processor family"
376 select USB_EHCI_BIG_ENDIAN_MMIO
377 select USB_EHCI_BIG_ENDIAN_DESC
378 select USB_UHCI_BIG_ENDIAN_MMIO
379 select USB_UHCI_BIG_ENDIAN_DESC
381 If you say Y here if you are running on a SPARC-LEON processor.
382 The LEON processor is a synthesizable VHDL model of the
383 SPARC-v8 standard. LEON is part of the GRLIB collection of
384 IP cores that are distributed under GPL. GRLIB can be downloaded
385 from www.gaisler.com. You can download a sparc-linux cross-compilation
386 toolchain at www.gaisler.com.
389 menu "U-Boot options"
391 config UBOOT_LOAD_ADDR
392 hex "uImage Load Address"
395 U-Boot kernel load address, the address in physical address space
396 where u-boot will place the Linux kernel before booting it.
397 This address is normally the base address of main memory + 0x4000.
399 config UBOOT_FLASH_ADDR
400 hex "uImage.o Load Address"
403 Optional setting only affecting the uImage.o ELF-image used to
404 download the uImage file to the target using a ELF-loader other than
405 U-Boot. It may for example be used to download an uImage to FLASH with
406 the GRMON utility before even starting u-boot.
408 config UBOOT_ENTRY_ADDR
409 hex "uImage Entry Address"
412 Do not change this unless you know what you're doing. This is
413 hardcoded by the SPARC32 and LEON port.
415 This is the virtual address u-boot jumps to when booting the Linux
423 menu "Bus options (PCI etc.)"
433 bool "Sun Logical Domains support"
436 Say Y here is you want to support virtual devices via
441 depends on PCI && SPARC32 && !SPARC_LEON
446 depends on PCI && SPARC_LEON
450 bool "GRPCI Host Bridge Support"
454 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
455 PCI host controller is typically found in GRLIB SPARC32/LEON
456 systems. The driver has one property (all_pci_errors) controlled
457 from the bootloader that makes the GRPCI to generate interrupts
458 on detected PCI Parity and System errors.
461 bool "GRPCI2 Host Bridge Support"
465 Say Y here to include the GRPCI2 Host Bridge Driver.
467 config SUN_OPENPROMFS
468 tristate "Openprom tree appears in /proc/openprom"
470 If you say Y, the OpenPROM device tree will be available as a
471 virtual file system, which you can mount to /proc/openprom by "mount
472 -t openpromfs none /proc/openprom".
474 To compile the /proc/openprom support as a module, choose M here: the
475 module will be called openpromfs.
477 Only choose N if you know in advance that you will not need to modify
478 OpenPROM settings on the running system.
484 depends on SPARC64 && PCI
486 config SPARC64_PCI_MSI
489 depends on SPARC64_PCI && PCI_MSI
497 select COMPAT_BINFMT_ELF
499 select ARCH_WANT_OLD_COMPAT_IPC
500 select COMPAT_OLD_SIGACTION
502 config SYSVIPC_COMPAT
504 depends on COMPAT && SYSVIPC
507 source "drivers/sbus/char/Kconfig"