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
36 select HAVE_NMI_WATCHDOG if SPARC64
37 select HAVE_CBPF_JIT if SPARC32
38 select HAVE_EBPF_JIT if SPARC64
39 select HAVE_DEBUG_BUGVERBOSE
40 select GENERIC_SMP_IDLE_THREAD
41 select MODULES_USE_ELF_RELA
42 select PCI_SYSCALL if PCI
43 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
44 select ODD_RT_SIGACTION
46 select CPU_NO_EFFICIENT_FFS
47 select LOCKDEP_SMALL if LOCKDEP
48 select NEED_DMA_MAP_STATE
49 select NEED_SG_DMA_LENGTH
50 select TRACE_IRQFLAGS_SUPPORT
54 select ARCH_32BIT_OFF_T
55 select ARCH_HAS_SYNC_DMA_FOR_CPU
57 select DMA_DIRECT_REMAP
58 select GENERIC_ATOMIC64
65 select ALTERNATE_USER_ADDRESS_SPACE
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 MMU_GATHER_MERGE_VMAS
72 select MMU_GATHER_NO_FLUSH_CACHE
73 select HAVE_ARCH_TRANSPARENT_HUGEPAGE
74 select HAVE_DYNAMIC_FTRACE
75 select HAVE_FTRACE_MCOUNT_RECORD
76 select HAVE_SYSCALL_TRACEPOINTS
77 select HAVE_CONTEXT_TRACKING_USER
79 select HAVE_DEBUG_KMEMLEAK
85 select RTC_DRV_STARFIRE
86 select HAVE_PERF_EVENTS
87 select PERF_USE_VMALLOC
88 select ARCH_HAVE_NMI_SAFE_CMPXCHG
89 select HAVE_C_RECORDMCOUNT
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 ARCH_FORCE_MAX_ORDER
274 int "Order of maximal physically contiguous allocations"
277 The kernel page allocator limits the size of maximal physically
278 contiguous allocations. The limit is called MAX_ORDER and it
279 defines the maximal power of two of number of pages that can be
280 allocated as a single contiguous block. This option allows
281 overriding the default setting when ability to allocate very
282 large blocks of physically contiguous memory is required.
284 Don't change if unsure.
286 if SPARC64 || COMPILE_TEST
287 source "kernel/power/Kconfig"
291 bool "SMT (Hyperthreading) scheduler support"
292 depends on SPARC64 && SMP
295 SMT scheduler support improves the CPU scheduler's decision making
296 when dealing with SPARC cpus at a cost of slightly increased overhead
297 in some places. If unsure say N here.
300 bool "Multi-core scheduler support"
301 depends on SPARC64 && SMP
304 Multi-core scheduler support improves the CPU scheduler's decision
305 making when dealing with multi-core CPU chips at a cost of slightly
306 increased overhead in some places. If unsure say N here.
309 bool "Default bootloader kernel arguments"
313 string "Initial kernel command string"
314 depends on CMDLINE_BOOL
315 default "console=ttyS0,9600 root=/dev/sda1"
317 Say Y here if you want to be able to pass default arguments to
318 the kernel. This will be overridden by the bootloader, if you
319 use one (such as SILO). This is most useful if you want to boot
320 a kernel from TFTP, and want default options to be available
321 with having them passed on the command line.
323 NOTE: This option WILL override the PROM bootargs setting!
329 Enable power management and CPU standby features on supported
333 tristate "Sun4m LED driver"
336 This driver toggles the front-panel LED on sun4m systems
337 in a user-specifiable manner. Its state can be probed
338 by reading /proc/led and its blinking mode can be changed
339 via writes to /proc/led
341 config SERIAL_CONSOLE
346 If you say Y here, it will be possible to use a serial port as the
347 system console (the system console is the device which receives all
348 kernel messages and warnings and which allows logins in single user
349 mode). This could be useful if some terminal or printer is connected
352 Even if you say Y here, the currently visible virtual console
353 (/dev/tty0) will still be used as the system console by default, but
354 you can alter that using a kernel command line option such as
355 "console=ttyS1". (Try "man bootparam" or see the documentation of
356 your boot loader (silo) about how to pass options to the kernel at
359 If you don't have a graphics card installed and you say Y here, the
360 kernel will automatically use the first serial line, /dev/ttyS0, as
366 bool "Sparc Leon processor family"
368 select USB_EHCI_BIG_ENDIAN_MMIO
369 select USB_EHCI_BIG_ENDIAN_DESC
370 select USB_UHCI_BIG_ENDIAN_MMIO
371 select USB_UHCI_BIG_ENDIAN_DESC
373 If you say Y here if you are running on a SPARC-LEON processor.
374 The LEON processor is a synthesizable VHDL model of the
375 SPARC-v8 standard. LEON is part of the GRLIB collection of
376 IP cores that are distributed under GPL. GRLIB can be downloaded
377 from www.gaisler.com. You can download a sparc-linux cross-compilation
378 toolchain at www.gaisler.com.
381 menu "U-Boot options"
383 config UBOOT_LOAD_ADDR
384 hex "uImage Load Address"
387 U-Boot kernel load address, the address in physical address space
388 where u-boot will place the Linux kernel before booting it.
389 This address is normally the base address of main memory + 0x4000.
391 config UBOOT_FLASH_ADDR
392 hex "uImage.o Load Address"
395 Optional setting only affecting the uImage.o ELF-image used to
396 download the uImage file to the target using a ELF-loader other than
397 U-Boot. It may for example be used to download an uImage to FLASH with
398 the GRMON utility before even starting u-boot.
400 config UBOOT_ENTRY_ADDR
401 hex "uImage Entry Address"
404 Do not change this unless you know what you're doing. This is
405 hardcoded by the SPARC32 and LEON port.
407 This is the virtual address u-boot jumps to when booting the Linux
415 menu "Bus options (PCI etc.)"
425 bool "Sun Logical Domains support"
428 Say Y here is you want to support virtual devices via
433 depends on PCI && SPARC32 && !SPARC_LEON
438 depends on PCI && SPARC_LEON
442 bool "GRPCI Host Bridge Support"
446 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
447 PCI host controller is typically found in GRLIB SPARC32/LEON
448 systems. The driver has one property (all_pci_errors) controlled
449 from the bootloader that makes the GRPCI to generate interrupts
450 on detected PCI Parity and System errors.
453 bool "GRPCI2 Host Bridge Support"
457 Say Y here to include the GRPCI2 Host Bridge Driver.
459 config SUN_OPENPROMFS
460 tristate "Openprom tree appears in /proc/openprom"
462 If you say Y, the OpenPROM device tree will be available as a
463 virtual file system, which you can mount to /proc/openprom by "mount
464 -t openpromfs none /proc/openprom".
466 To compile the /proc/openprom support as a module, choose M here: the
467 module will be called openpromfs.
469 Only choose N if you know in advance that you will not need to modify
470 OpenPROM settings on the running system.
476 depends on SPARC64 && PCI
478 config SPARC64_PCI_MSI
481 depends on SPARC64_PCI && PCI_MSI
490 select ARCH_WANT_OLD_COMPAT_IPC
491 select COMPAT_OLD_SIGACTION
493 source "drivers/sbus/char/Kconfig"