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
148 config GENERIC_ISA_DMA
152 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
153 def_bool y if SPARC64
155 config PGTABLE_LEVELS
159 config ARCH_SUPPORTS_UPROBES
160 def_bool y if SPARC64
162 menu "Processor type and features"
165 bool "Symmetric multi-processing support"
167 This enables support for systems with more than one CPU. If you have
168 a system with only one CPU, say N. If you have a system with more
171 If you say N here, the kernel will run on uni- and multiprocessor
172 machines, but will use only one CPU of a multiprocessor machine. If
173 you say Y here, the kernel will run on many, but not all,
174 uniprocessor machines. On a uniprocessor machine, the kernel
175 will run faster if you say N here.
177 People using multiprocessor machines who say Y here should also say
178 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
179 Management" code will be disabled if you say Y here.
181 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
182 available at <http://www.tldp.org/docs.html#howto>.
184 If you don't know what to do here, say N.
187 int "Maximum number of CPUs"
189 range 2 32 if SPARC32
190 range 2 4096 if SPARC64
191 default 32 if SPARC32
192 default 4096 if SPARC64
194 source "kernel/Kconfig.hz"
196 config GENERIC_HWEIGHT
200 config GENERIC_CALIBRATE_DELAY
204 config ARCH_MAY_HAVE_PC_FDC
208 config EMULATED_CMPXCHG
212 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
213 is emulated, and therefore it is not completely atomic.
219 depends on SPARC32 && SMP
224 depends on SPARC64 && SMP
227 bool "Support for early boot text console"
231 Say Y here to enable a faster early framebuffer boot console.
234 bool "Support for hot-pluggable CPUs"
235 depends on SPARC64 && SMP
237 Say Y here to experiment with turning CPUs off and on. CPUs
238 can be controlled through /sys/devices/system/cpu/cpu#.
239 Say N if you want to disable CPU hotplug.
242 source "drivers/cpufreq/Kconfig"
246 tristate "UltraSPARC-III Memory Controller driver"
250 This adds a driver for the UltraSPARC-III memory controller.
251 Loading this driver allows exact mnemonic strings to be
252 printed in the event of a memory error, so that the faulty DIMM
253 on the motherboard can be matched to the error.
255 If in doubt, say Y, as this information can be very useful.
257 # Global things across all Sun machines.
258 config GENERIC_LOCKBREAK
261 depends on SPARC64 && SMP && PREEMPTION
265 depends on SPARC64 && SMP
268 int "Maximum NUMA Nodes (as a power of 2)"
271 depends on NEED_MULTIPLE_NODES
273 Specify the maximum number of NUMA Nodes available on the target
274 system. Increases memory reserved to accommodate various tables.
276 config ARCH_SPARSEMEM_ENABLE
277 def_bool y if SPARC64
278 select SPARSEMEM_VMEMMAP_ENABLE
280 config ARCH_SPARSEMEM_DEFAULT
281 def_bool y if SPARC64
283 config FORCE_MAX_ZONEORDER
284 int "Maximum zone order"
287 The kernel memory allocator divides physically contiguous memory
288 blocks into "zones", where each zone is a power of two number of
289 pages. This option selects the largest power of two that the kernel
290 keeps in the memory allocator. If you need to allocate very large
291 blocks of physically contiguous memory, then you may need to
294 This config option is actually maximum order plus one. For example,
295 a value of 13 means that the largest free memory block is 2^12 pages.
298 source "kernel/power/Kconfig"
302 bool "SMT (Hyperthreading) scheduler support"
303 depends on SPARC64 && SMP
306 SMT scheduler support improves the CPU scheduler's decision making
307 when dealing with SPARC cpus at a cost of slightly increased overhead
308 in some places. If unsure say N here.
311 bool "Multi-core scheduler support"
312 depends on SPARC64 && SMP
315 Multi-core scheduler support improves the CPU scheduler's decision
316 making when dealing with multi-core CPU chips at a cost of slightly
317 increased overhead in some places. If unsure say N here.
320 bool "Default bootloader kernel arguments"
324 string "Initial kernel command string"
325 depends on CMDLINE_BOOL
326 default "console=ttyS0,9600 root=/dev/sda1"
328 Say Y here if you want to be able to pass default arguments to
329 the kernel. This will be overridden by the bootloader, if you
330 use one (such as SILO). This is most useful if you want to boot
331 a kernel from TFTP, and want default options to be available
332 with having them passed on the command line.
334 NOTE: This option WILL override the PROM bootargs setting!
340 Enable power management and CPU standby features on supported
344 tristate "Sun4m LED driver"
347 This driver toggles the front-panel LED on sun4m systems
348 in a user-specifiable manner. Its state can be probed
349 by reading /proc/led and its blinking mode can be changed
350 via writes to /proc/led
352 config SERIAL_CONSOLE
357 If you say Y here, it will be possible to use a serial port as the
358 system console (the system console is the device which receives all
359 kernel messages and warnings and which allows logins in single user
360 mode). This could be useful if some terminal or printer is connected
363 Even if you say Y here, the currently visible virtual console
364 (/dev/tty0) will still be used as the system console by default, but
365 you can alter that using a kernel command line option such as
366 "console=ttyS1". (Try "man bootparam" or see the documentation of
367 your boot loader (silo) about how to pass options to the kernel at
370 If you don't have a graphics card installed and you say Y here, the
371 kernel will automatically use the first serial line, /dev/ttyS0, as
377 bool "Sparc Leon processor family"
379 select USB_EHCI_BIG_ENDIAN_MMIO
380 select USB_EHCI_BIG_ENDIAN_DESC
381 select USB_UHCI_BIG_ENDIAN_MMIO
382 select USB_UHCI_BIG_ENDIAN_DESC
384 If you say Y here if you are running on a SPARC-LEON processor.
385 The LEON processor is a synthesizable VHDL model of the
386 SPARC-v8 standard. LEON is part of the GRLIB collection of
387 IP cores that are distributed under GPL. GRLIB can be downloaded
388 from www.gaisler.com. You can download a sparc-linux cross-compilation
389 toolchain at www.gaisler.com.
392 menu "U-Boot options"
394 config UBOOT_LOAD_ADDR
395 hex "uImage Load Address"
398 U-Boot kernel load address, the address in physical address space
399 where u-boot will place the Linux kernel before booting it.
400 This address is normally the base address of main memory + 0x4000.
402 config UBOOT_FLASH_ADDR
403 hex "uImage.o Load Address"
406 Optional setting only affecting the uImage.o ELF-image used to
407 download the uImage file to the target using a ELF-loader other than
408 U-Boot. It may for example be used to download an uImage to FLASH with
409 the GRMON utility before even starting u-boot.
411 config UBOOT_ENTRY_ADDR
412 hex "uImage Entry Address"
415 Do not change this unless you know what you're doing. This is
416 hardcoded by the SPARC32 and LEON port.
418 This is the virtual address u-boot jumps to when booting the Linux
426 menu "Bus options (PCI etc.)"
436 bool "Sun Logical Domains support"
439 Say Y here is you want to support virtual devices via
444 depends on PCI && SPARC32 && !SPARC_LEON
449 depends on PCI && SPARC_LEON
453 bool "GRPCI Host Bridge Support"
457 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
458 PCI host controller is typically found in GRLIB SPARC32/LEON
459 systems. The driver has one property (all_pci_errors) controlled
460 from the bootloader that makes the GRPCI to generate interrupts
461 on detected PCI Parity and System errors.
464 bool "GRPCI2 Host Bridge Support"
468 Say Y here to include the GRPCI2 Host Bridge Driver.
470 config SUN_OPENPROMFS
471 tristate "Openprom tree appears in /proc/openprom"
473 If you say Y, the OpenPROM device tree will be available as a
474 virtual file system, which you can mount to /proc/openprom by "mount
475 -t openpromfs none /proc/openprom".
477 To compile the /proc/openprom support as a module, choose M here: the
478 module will be called openpromfs.
480 Only choose N if you know in advance that you will not need to modify
481 OpenPROM settings on the running system.
487 depends on SPARC64 && PCI
489 config SPARC64_PCI_MSI
492 depends on SPARC64_PCI && PCI_MSI
500 select COMPAT_BINFMT_ELF
502 select ARCH_WANT_OLD_COMPAT_IPC
503 select COMPAT_OLD_SIGACTION
505 config SYSVIPC_COMPAT
507 depends on COMPAT && SYSVIPC
510 source "drivers/sbus/char/Kconfig"