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 MMU_GATHER_MERGE_VMAS
71 select MMU_GATHER_NO_FLUSH_CACHE
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 ARCH_HAS_VM_GET_PAGE_PROT
90 select HAVE_ARCH_AUDITSYSCALL
91 select ARCH_SUPPORTS_ATOMIC_RMW
92 select ARCH_SUPPORTS_DEBUG_PAGEALLOC
94 select HAVE_REGS_AND_STACK_ACCESS_API
95 select ARCH_USE_QUEUED_RWLOCKS
96 select ARCH_USE_QUEUED_SPINLOCKS
97 select GENERIC_TIME_VSYSCALL
98 select ARCH_CLOCKSOURCE_DATA
99 select ARCH_HAS_PTE_SPECIAL
100 select PCI_DOMAINS if PCI
101 select ARCH_HAS_GIGANTIC_PAGE
102 select HAVE_SOFTIRQ_ON_OWN_STACK
103 select HAVE_SETUP_PER_CPU_AREA
104 select NEED_PER_CPU_EMBED_FIRST_CHUNK
105 select NEED_PER_CPU_PAGE_FIRST_CHUNK
107 config ARCH_PROC_KCORE_TEXT
110 config CPU_BIG_ENDIAN
117 config STACKTRACE_SUPPORT
121 config LOCKDEP_SUPPORT
125 config ARCH_HIBERNATION_POSSIBLE
126 def_bool y if SPARC64
141 config GENERIC_ISA_DMA
145 config PGTABLE_LEVELS
149 config ARCH_SUPPORTS_UPROBES
150 def_bool y if SPARC64
152 menu "Processor type and features"
155 bool "Symmetric multi-processing support"
157 This enables support for systems with more than one CPU. If you have
158 a system with only one CPU, say N. If you have a system with more
161 If you say N here, the kernel will run on uni- and multiprocessor
162 machines, but will use only one CPU of a multiprocessor machine. If
163 you say Y here, the kernel will run on many, but not all,
164 uniprocessor machines. On a uniprocessor machine, the kernel
165 will run faster if you say N here.
167 People using multiprocessor machines who say Y here should also say
168 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
169 Management" code will be disabled if you say Y here.
171 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
172 available at <https://www.tldp.org/docs.html#howto>.
174 If you don't know what to do here, say N.
177 int "Maximum number of CPUs"
179 range 2 32 if SPARC32
180 range 2 4096 if SPARC64
181 default 32 if SPARC32
182 default 4096 if SPARC64
184 source "kernel/Kconfig.hz"
186 config GENERIC_HWEIGHT
190 config GENERIC_CALIBRATE_DELAY
194 config ARCH_MAY_HAVE_PC_FDC
198 config EMULATED_CMPXCHG
202 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
203 is emulated, and therefore it is not completely atomic.
209 depends on SPARC32 && SMP
214 depends on SPARC64 && SMP
217 bool "Support for early boot text console"
221 Say Y here to enable a faster early framebuffer boot console.
224 bool "Support for hot-pluggable CPUs"
225 depends on SPARC64 && SMP
227 Say Y here to experiment with turning CPUs off and on. CPUs
228 can be controlled through /sys/devices/system/cpu/cpu#.
229 Say N if you want to disable CPU hotplug.
232 source "drivers/cpufreq/Kconfig"
236 tristate "UltraSPARC-III Memory Controller driver"
240 This adds a driver for the UltraSPARC-III memory controller.
241 Loading this driver allows exact mnemonic strings to be
242 printed in the event of a memory error, so that the faulty DIMM
243 on the motherboard can be matched to the error.
245 If in doubt, say Y, as this information can be very useful.
247 # Global things across all Sun machines.
248 config GENERIC_LOCKBREAK
251 depends on SPARC64 && SMP && PREEMPTION
255 depends on SPARC64 && SMP
258 int "Maximum NUMA Nodes (as a power of 2)"
263 Specify the maximum number of NUMA Nodes available on the target
264 system. Increases memory reserved to accommodate various tables.
266 config ARCH_SPARSEMEM_ENABLE
267 def_bool y if SPARC64
268 select SPARSEMEM_VMEMMAP_ENABLE
270 config ARCH_SPARSEMEM_DEFAULT
271 def_bool y if SPARC64
273 config FORCE_MAX_ZONEORDER
274 int "Maximum zone order"
277 The kernel memory allocator divides physically contiguous memory
278 blocks into "zones", where each zone is a power of two number of
279 pages. This option selects the largest power of two that the kernel
280 keeps in the memory allocator. If you need to allocate very large
281 blocks of physically contiguous memory, then you may need to
284 This config option is actually maximum order plus one. For example,
285 a value of 13 means that the largest free memory block is 2^12 pages.
288 source "kernel/power/Kconfig"
292 bool "SMT (Hyperthreading) scheduler support"
293 depends on SPARC64 && SMP
296 SMT scheduler support improves the CPU scheduler's decision making
297 when dealing with SPARC cpus at a cost of slightly increased overhead
298 in some places. If unsure say N here.
301 bool "Multi-core scheduler support"
302 depends on SPARC64 && SMP
305 Multi-core scheduler support improves the CPU scheduler's decision
306 making when dealing with multi-core CPU chips at a cost of slightly
307 increased overhead in some places. If unsure say N here.
310 bool "Default bootloader kernel arguments"
314 string "Initial kernel command string"
315 depends on CMDLINE_BOOL
316 default "console=ttyS0,9600 root=/dev/sda1"
318 Say Y here if you want to be able to pass default arguments to
319 the kernel. This will be overridden by the bootloader, if you
320 use one (such as SILO). This is most useful if you want to boot
321 a kernel from TFTP, and want default options to be available
322 with having them passed on the command line.
324 NOTE: This option WILL override the PROM bootargs setting!
330 Enable power management and CPU standby features on supported
334 tristate "Sun4m LED driver"
337 This driver toggles the front-panel LED on sun4m systems
338 in a user-specifiable manner. Its state can be probed
339 by reading /proc/led and its blinking mode can be changed
340 via writes to /proc/led
342 config SERIAL_CONSOLE
347 If you say Y here, it will be possible to use a serial port as the
348 system console (the system console is the device which receives all
349 kernel messages and warnings and which allows logins in single user
350 mode). This could be useful if some terminal or printer is connected
353 Even if you say Y here, the currently visible virtual console
354 (/dev/tty0) will still be used as the system console by default, but
355 you can alter that using a kernel command line option such as
356 "console=ttyS1". (Try "man bootparam" or see the documentation of
357 your boot loader (silo) about how to pass options to the kernel at
360 If you don't have a graphics card installed and you say Y here, the
361 kernel will automatically use the first serial line, /dev/ttyS0, as
367 bool "Sparc Leon processor family"
369 select USB_EHCI_BIG_ENDIAN_MMIO
370 select USB_EHCI_BIG_ENDIAN_DESC
371 select USB_UHCI_BIG_ENDIAN_MMIO
372 select USB_UHCI_BIG_ENDIAN_DESC
374 If you say Y here if you are running on a SPARC-LEON processor.
375 The LEON processor is a synthesizable VHDL model of the
376 SPARC-v8 standard. LEON is part of the GRLIB collection of
377 IP cores that are distributed under GPL. GRLIB can be downloaded
378 from www.gaisler.com. You can download a sparc-linux cross-compilation
379 toolchain at www.gaisler.com.
382 menu "U-Boot options"
384 config UBOOT_LOAD_ADDR
385 hex "uImage Load Address"
388 U-Boot kernel load address, the address in physical address space
389 where u-boot will place the Linux kernel before booting it.
390 This address is normally the base address of main memory + 0x4000.
392 config UBOOT_FLASH_ADDR
393 hex "uImage.o Load Address"
396 Optional setting only affecting the uImage.o ELF-image used to
397 download the uImage file to the target using a ELF-loader other than
398 U-Boot. It may for example be used to download an uImage to FLASH with
399 the GRMON utility before even starting u-boot.
401 config UBOOT_ENTRY_ADDR
402 hex "uImage Entry Address"
405 Do not change this unless you know what you're doing. This is
406 hardcoded by the SPARC32 and LEON port.
408 This is the virtual address u-boot jumps to when booting the Linux
416 menu "Bus options (PCI etc.)"
426 bool "Sun Logical Domains support"
429 Say Y here is you want to support virtual devices via
434 depends on PCI && SPARC32 && !SPARC_LEON
439 depends on PCI && SPARC_LEON
443 bool "GRPCI Host Bridge Support"
447 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
448 PCI host controller is typically found in GRLIB SPARC32/LEON
449 systems. The driver has one property (all_pci_errors) controlled
450 from the bootloader that makes the GRPCI to generate interrupts
451 on detected PCI Parity and System errors.
454 bool "GRPCI2 Host Bridge Support"
458 Say Y here to include the GRPCI2 Host Bridge Driver.
460 config SUN_OPENPROMFS
461 tristate "Openprom tree appears in /proc/openprom"
463 If you say Y, the OpenPROM device tree will be available as a
464 virtual file system, which you can mount to /proc/openprom by "mount
465 -t openpromfs none /proc/openprom".
467 To compile the /proc/openprom support as a module, choose M here: the
468 module will be called openpromfs.
470 Only choose N if you know in advance that you will not need to modify
471 OpenPROM settings on the running system.
477 depends on SPARC64 && PCI
479 config SPARC64_PCI_MSI
482 depends on SPARC64_PCI && PCI_MSI
491 select ARCH_WANT_OLD_COMPAT_IPC
492 select COMPAT_OLD_SIGACTION
494 source "drivers/sbus/char/Kconfig"