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_HAS_CPU_CACHE_ALIASING
17 select ARCH_HAS_DMA_OPS
18 select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI
19 select ARCH_MIGHT_HAVE_PC_SERIO
22 select HAVE_ASM_MODVERSIONS
23 select HAVE_ARCH_KGDB if !SMP || SPARC64
24 select HAVE_ARCH_TRACEHOOK
25 select HAVE_ARCH_SECCOMP if SPARC64
26 select HAVE_EXIT_THREAD
28 select SYSCTL_EXCEPTION_TRACE
32 select HAVE_ARCH_JUMP_LABEL if SPARC64
33 select GENERIC_IRQ_SHOW
34 select ARCH_WANT_IPC_PARSE_VERSION
35 select GENERIC_PCI_IOMAP
37 select HAVE_HARDLOCKUP_DETECTOR_SPARC64 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 MODULES_USE_ELF_RELA
43 select PCI_SYSCALL if PCI
44 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
45 select ODD_RT_SIGACTION
47 select CPU_NO_EFFICIENT_FFS
48 select LOCKDEP_SMALL if LOCKDEP
49 select NEED_DMA_MAP_STATE
50 select NEED_SG_DMA_LENGTH
51 select TRACE_IRQFLAGS_SUPPORT
55 select ARCH_32BIT_OFF_T
56 select ARCH_HAS_CPU_FINALIZE_INIT if !SMP
57 select ARCH_HAS_SYNC_DMA_FOR_CPU
59 select DMA_DIRECT_REMAP
60 select GENERIC_ATOMIC64
61 select GENERIC_LIB_CMPDI2
62 select GENERIC_LIB_UCMPDI2
64 select HAVE_PAGE_SIZE_4KB
65 select LOCK_MM_AND_FIND_VMA
71 select ALTERNATE_USER_ADDRESS_SPACE
72 select HAVE_FUNCTION_TRACER
73 select HAVE_FUNCTION_GRAPH_TRACER
74 select HAVE_KRETPROBES
76 select MMU_GATHER_RCU_TABLE_FREE if SMP
77 select MMU_GATHER_MERGE_VMAS
78 select MMU_GATHER_NO_FLUSH_CACHE
79 select HAVE_ARCH_TRANSPARENT_HUGEPAGE
80 select HAVE_DYNAMIC_FTRACE
81 select HAVE_FTRACE_MCOUNT_RECORD
82 select HAVE_PAGE_SIZE_8KB
83 select HAVE_SYSCALL_TRACEPOINTS
84 select HAVE_CONTEXT_TRACKING_USER
86 select HAVE_DEBUG_KMEMLEAK
92 select RTC_DRV_STARFIRE
93 select HAVE_PERF_EVENTS
94 select PERF_USE_VMALLOC
95 select ARCH_HAVE_NMI_SAFE_CMPXCHG
96 select HAVE_C_RECORDMCOUNT
97 select HAVE_ARCH_AUDITSYSCALL
98 select ARCH_SUPPORTS_ATOMIC_RMW
99 select ARCH_SUPPORTS_DEBUG_PAGEALLOC
101 select HAVE_REGS_AND_STACK_ACCESS_API
102 select ARCH_USE_QUEUED_RWLOCKS
103 select ARCH_USE_QUEUED_SPINLOCKS
104 select GENERIC_TIME_VSYSCALL
105 select ARCH_CLOCKSOURCE_DATA
106 select ARCH_HAS_PTE_SPECIAL
107 select PCI_DOMAINS if PCI
108 select ARCH_HAS_GIGANTIC_PAGE
109 select HAVE_SOFTIRQ_ON_OWN_STACK
110 select HAVE_SETUP_PER_CPU_AREA
111 select NEED_PER_CPU_EMBED_FIRST_CHUNK
112 select NEED_PER_CPU_PAGE_FIRST_CHUNK
114 config ARCH_PROC_KCORE_TEXT
117 config CPU_BIG_ENDIAN
120 config STACKTRACE_SUPPORT
124 config LOCKDEP_SUPPORT
128 config ARCH_HIBERNATION_POSSIBLE
129 def_bool y if SPARC64
144 config PGTABLE_LEVELS
148 config ARCH_SUPPORTS_UPROBES
149 def_bool y if SPARC64
151 menu "Processor type and features"
154 bool "Symmetric multi-processing support"
156 This enables support for systems with more than one CPU. If you have
157 a system with only one CPU, say N. If you have a system with more
160 If you say N here, the kernel will run on uni- and multiprocessor
161 machines, but will use only one CPU of a multiprocessor machine. If
162 you say Y here, the kernel will run on many, but not all,
163 uniprocessor machines. On a uniprocessor machine, the kernel
164 will run faster if you say N here.
166 People using multiprocessor machines who say Y here should also say
167 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
168 Management" code will be disabled if you say Y here.
170 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
171 available at <https://www.tldp.org/docs.html#howto>.
173 If you don't know what to do here, say N.
176 int "Maximum number of CPUs"
178 range 2 32 if SPARC32
179 range 2 4096 if SPARC64
180 default 32 if SPARC32
181 default 4096 if SPARC64
183 source "kernel/Kconfig.hz"
185 config GENERIC_HWEIGHT
189 config GENERIC_CALIBRATE_DELAY
193 config ARCH_MAY_HAVE_PC_FDC
197 config EMULATED_CMPXCHG
201 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
202 is emulated, and therefore it is not completely atomic.
208 depends on SPARC32 && SMP
213 depends on SPARC64 && SMP
216 bool "Support for early boot text console"
222 Say Y here to enable a faster early framebuffer boot console.
225 bool "Support for hot-pluggable CPUs"
226 depends on SPARC64 && SMP
228 Say Y here to experiment with turning CPUs off and on. CPUs
229 can be controlled through /sys/devices/system/cpu/cpu#.
230 Say N if you want to disable CPU hotplug.
233 source "drivers/cpufreq/Kconfig"
237 tristate "UltraSPARC-III Memory Controller driver"
241 This adds a driver for the UltraSPARC-III memory controller.
242 Loading this driver allows exact mnemonic strings to be
243 printed in the event of a memory error, so that the faulty DIMM
244 on the motherboard can be matched to the error.
246 If in doubt, say Y, as this information can be very useful.
248 # Global things across all Sun machines.
249 config GENERIC_LOCKBREAK
252 depends on SPARC64 && SMP && PREEMPTION
256 depends on SPARC64 && SMP
259 int "Maximum NUMA Nodes (as a power of 2)"
264 Specify the maximum number of NUMA Nodes available on the target
265 system. Increases memory reserved to accommodate various tables.
267 config ARCH_SPARSEMEM_ENABLE
268 def_bool y if SPARC64
269 select SPARSEMEM_VMEMMAP_ENABLE
271 config ARCH_SPARSEMEM_DEFAULT
272 def_bool y if SPARC64
274 config ARCH_FORCE_MAX_ORDER
275 int "Order of maximal physically contiguous allocations"
278 The kernel page allocator limits the size of maximal physically
279 contiguous allocations. The limit is called MAX_PAGE_ORDER and it
280 defines the maximal power of two of number of pages that can be
281 allocated as a single contiguous block. This option allows
282 overriding the default setting when ability to allocate very
283 large blocks of physically contiguous memory is required.
285 Don't change if unsure.
287 if SPARC64 || COMPILE_TEST
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"