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
50 select TRACE_IRQFLAGS_SUPPORT
54 select ARCH_32BIT_OFF_T
55 select ARCH_HAS_CPU_FINALIZE_INIT if !SMP
56 select ARCH_HAS_SYNC_DMA_FOR_CPU
57 select GENERIC_ATOMIC64
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 HAVE_ARCH_TRANSPARENT_HUGEPAGE
71 select HAVE_DYNAMIC_FTRACE
72 select HAVE_FTRACE_MCOUNT_RECORD
73 select HAVE_SYSCALL_TRACEPOINTS
74 select HAVE_CONTEXT_TRACKING
76 select HAVE_DEBUG_KMEMLEAK
82 select RTC_DRV_STARFIRE
83 select HAVE_PERF_EVENTS
84 select PERF_USE_VMALLOC
85 select ARCH_HAVE_NMI_SAFE_CMPXCHG
86 select HAVE_C_RECORDMCOUNT
87 select HAVE_ARCH_AUDITSYSCALL
88 select ARCH_SUPPORTS_ATOMIC_RMW
89 select ARCH_SUPPORTS_DEBUG_PAGEALLOC
91 select HAVE_REGS_AND_STACK_ACCESS_API
92 select ARCH_USE_QUEUED_RWLOCKS
93 select ARCH_USE_QUEUED_SPINLOCKS
94 select GENERIC_TIME_VSYSCALL
95 select ARCH_CLOCKSOURCE_DATA
96 select ARCH_HAS_PTE_SPECIAL
97 select PCI_DOMAINS if PCI
98 select ARCH_HAS_GIGANTIC_PAGE
99 select HAVE_SOFTIRQ_ON_OWN_STACK
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
144 config GENERIC_ISA_DMA
148 config PGTABLE_LEVELS
152 config ARCH_SUPPORTS_UPROBES
153 def_bool y if SPARC64
155 menu "Processor type and features"
158 bool "Symmetric multi-processing support"
160 This enables support for systems with more than one CPU. If you have
161 a system with only one CPU, say N. If you have a system with more
164 If you say N here, the kernel will run on uni- and multiprocessor
165 machines, but will use only one CPU of a multiprocessor machine. If
166 you say Y here, the kernel will run on many, but not all,
167 uniprocessor machines. On a uniprocessor machine, the kernel
168 will run faster if you say N here.
170 People using multiprocessor machines who say Y here should also say
171 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
172 Management" code will be disabled if you say Y here.
174 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
175 available at <https://www.tldp.org/docs.html#howto>.
177 If you don't know what to do here, say N.
180 int "Maximum number of CPUs"
182 range 2 32 if SPARC32
183 range 2 4096 if SPARC64
184 default 32 if SPARC32
185 default 4096 if SPARC64
187 source "kernel/Kconfig.hz"
189 config GENERIC_HWEIGHT
193 config GENERIC_CALIBRATE_DELAY
197 config ARCH_MAY_HAVE_PC_FDC
201 config EMULATED_CMPXCHG
205 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
206 is emulated, and therefore it is not completely atomic.
212 depends on SPARC32 && SMP
217 depends on SPARC64 && SMP
220 bool "Support for early boot text console"
224 Say Y here to enable a faster early framebuffer boot console.
227 bool "Support for hot-pluggable CPUs"
228 depends on SPARC64 && SMP
230 Say Y here to experiment with turning CPUs off and on. CPUs
231 can be controlled through /sys/devices/system/cpu/cpu#.
232 Say N if you want to disable CPU hotplug.
235 source "drivers/cpufreq/Kconfig"
239 tristate "UltraSPARC-III Memory Controller driver"
243 This adds a driver for the UltraSPARC-III memory controller.
244 Loading this driver allows exact mnemonic strings to be
245 printed in the event of a memory error, so that the faulty DIMM
246 on the motherboard can be matched to the error.
248 If in doubt, say Y, as this information can be very useful.
250 # Global things across all Sun machines.
251 config GENERIC_LOCKBREAK
254 depends on SPARC64 && SMP && PREEMPTION
258 depends on SPARC64 && SMP
261 int "Maximum NUMA Nodes (as a power of 2)"
266 Specify the maximum number of NUMA Nodes available on the target
267 system. Increases memory reserved to accommodate various tables.
269 config ARCH_SPARSEMEM_ENABLE
270 def_bool y if SPARC64
271 select SPARSEMEM_VMEMMAP_ENABLE
273 config ARCH_SPARSEMEM_DEFAULT
274 def_bool y if SPARC64
276 config FORCE_MAX_ZONEORDER
277 int "Maximum zone order"
280 The kernel memory allocator divides physically contiguous memory
281 blocks into "zones", where each zone is a power of two number of
282 pages. This option selects the largest power of two that the kernel
283 keeps in the memory allocator. If you need to allocate very large
284 blocks of physically contiguous memory, then you may need to
287 This config option is actually maximum order plus one. For example,
288 a value of 13 means that the largest free memory block is 2^12 pages.
290 if SPARC64 || COMPILE_TEST
291 source "kernel/power/Kconfig"
295 bool "SMT (Hyperthreading) scheduler support"
296 depends on SPARC64 && SMP
299 SMT scheduler support improves the CPU scheduler's decision making
300 when dealing with SPARC cpus at a cost of slightly increased overhead
301 in some places. If unsure say N here.
304 bool "Multi-core scheduler support"
305 depends on SPARC64 && SMP
308 Multi-core scheduler support improves the CPU scheduler's decision
309 making when dealing with multi-core CPU chips at a cost of slightly
310 increased overhead in some places. If unsure say N here.
313 bool "Default bootloader kernel arguments"
317 string "Initial kernel command string"
318 depends on CMDLINE_BOOL
319 default "console=ttyS0,9600 root=/dev/sda1"
321 Say Y here if you want to be able to pass default arguments to
322 the kernel. This will be overridden by the bootloader, if you
323 use one (such as SILO). This is most useful if you want to boot
324 a kernel from TFTP, and want default options to be available
325 with having them passed on the command line.
327 NOTE: This option WILL override the PROM bootargs setting!
333 Enable power management and CPU standby features on supported
337 tristate "Sun4m LED driver"
340 This driver toggles the front-panel LED on sun4m systems
341 in a user-specifiable manner. Its state can be probed
342 by reading /proc/led and its blinking mode can be changed
343 via writes to /proc/led
345 config SERIAL_CONSOLE
350 If you say Y here, it will be possible to use a serial port as the
351 system console (the system console is the device which receives all
352 kernel messages and warnings and which allows logins in single user
353 mode). This could be useful if some terminal or printer is connected
356 Even if you say Y here, the currently visible virtual console
357 (/dev/tty0) will still be used as the system console by default, but
358 you can alter that using a kernel command line option such as
359 "console=ttyS1". (Try "man bootparam" or see the documentation of
360 your boot loader (silo) about how to pass options to the kernel at
363 If you don't have a graphics card installed and you say Y here, the
364 kernel will automatically use the first serial line, /dev/ttyS0, as
370 bool "Sparc Leon processor family"
372 select USB_EHCI_BIG_ENDIAN_MMIO
373 select USB_EHCI_BIG_ENDIAN_DESC
374 select USB_UHCI_BIG_ENDIAN_MMIO
375 select USB_UHCI_BIG_ENDIAN_DESC
377 If you say Y here if you are running on a SPARC-LEON processor.
378 The LEON processor is a synthesizable VHDL model of the
379 SPARC-v8 standard. LEON is part of the GRLIB collection of
380 IP cores that are distributed under GPL. GRLIB can be downloaded
381 from www.gaisler.com. You can download a sparc-linux cross-compilation
382 toolchain at www.gaisler.com.
385 menu "U-Boot options"
387 config UBOOT_LOAD_ADDR
388 hex "uImage Load Address"
391 U-Boot kernel load address, the address in physical address space
392 where u-boot will place the Linux kernel before booting it.
393 This address is normally the base address of main memory + 0x4000.
395 config UBOOT_FLASH_ADDR
396 hex "uImage.o Load Address"
399 Optional setting only affecting the uImage.o ELF-image used to
400 download the uImage file to the target using a ELF-loader other than
401 U-Boot. It may for example be used to download an uImage to FLASH with
402 the GRMON utility before even starting u-boot.
404 config UBOOT_ENTRY_ADDR
405 hex "uImage Entry Address"
408 Do not change this unless you know what you're doing. This is
409 hardcoded by the SPARC32 and LEON port.
411 This is the virtual address u-boot jumps to when booting the Linux
419 menu "Bus options (PCI etc.)"
429 bool "Sun Logical Domains support"
432 Say Y here is you want to support virtual devices via
437 depends on PCI && SPARC32 && !SPARC_LEON
442 depends on PCI && SPARC_LEON
446 bool "GRPCI Host Bridge Support"
450 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
451 PCI host controller is typically found in GRLIB SPARC32/LEON
452 systems. The driver has one property (all_pci_errors) controlled
453 from the bootloader that makes the GRPCI to generate interrupts
454 on detected PCI Parity and System errors.
457 bool "GRPCI2 Host Bridge Support"
461 Say Y here to include the GRPCI2 Host Bridge Driver.
463 config SUN_OPENPROMFS
464 tristate "Openprom tree appears in /proc/openprom"
466 If you say Y, the OpenPROM device tree will be available as a
467 virtual file system, which you can mount to /proc/openprom by "mount
468 -t openpromfs none /proc/openprom".
470 To compile the /proc/openprom support as a module, choose M here: the
471 module will be called openpromfs.
473 Only choose N if you know in advance that you will not need to modify
474 OpenPROM settings on the running system.
480 depends on SPARC64 && PCI
482 config SPARC64_PCI_MSI
485 depends on SPARC64_PCI && PCI_MSI
494 select ARCH_WANT_OLD_COMPAT_IPC
495 select COMPAT_OLD_SIGACTION
497 config SYSVIPC_COMPAT
499 depends on COMPAT && SYSVIPC
502 source "drivers/sbus/char/Kconfig"