1
2config 64BIT
3 bool "64-bit kernel" if "$(ARCH)" = "sparc"
4 default "$(ARCH)" = "sparc64"
5 help
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.
9
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
12
13config SPARC
14 bool
15 default y
16 select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI
17 select ARCH_MIGHT_HAVE_PC_SERIO
18 select DMA_OPS
19 select OF
20 select OF_PROMTREE
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
26 select HAVE_PCI
27 select SYSCTL_EXCEPTION_TRACE
28 select RTC_CLASS
29 select RTC_DRV_M48T59
30 select RTC_SYSTOHC
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
44 select OLD_SIGSUSPEND
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 SET_FS
50 select TRACE_IRQFLAGS_SUPPORT
51
52config SPARC32
53 def_bool !64BIT
54 select ARCH_32BIT_OFF_T
55 select ARCH_HAS_SYNC_DMA_FOR_CPU
56 select GENERIC_ATOMIC64
57 select CLZ_TAB
58 select HAVE_UID16
59 select OLD_SIGACTION
60 select ZONE_DMA
61
62config SPARC64
63 def_bool 64BIT
64 select HAVE_FUNCTION_TRACER
65 select HAVE_FUNCTION_GRAPH_TRACER
66 select HAVE_KRETPROBES
67 select HAVE_KPROBES
68 select MMU_GATHER_RCU_TABLE_FREE if SMP
69 select HAVE_ARCH_TRANSPARENT_HUGEPAGE
70 select HAVE_DYNAMIC_FTRACE
71 select HAVE_FTRACE_MCOUNT_RECORD
72 select HAVE_SYSCALL_TRACEPOINTS
73 select HAVE_CONTEXT_TRACKING
74 select HAVE_TIF_NOHZ
75 select HAVE_DEBUG_KMEMLEAK
76 select IOMMU_HELPER
77 select SPARSE_IRQ
78 select RTC_DRV_CMOS
79 select RTC_DRV_BQ4802
80 select RTC_DRV_SUN4V
81 select RTC_DRV_STARFIRE
82 select HAVE_PERF_EVENTS
83 select PERF_USE_VMALLOC
84 select ARCH_HAVE_NMI_SAFE_CMPXCHG
85 select HAVE_C_RECORDMCOUNT
86 select HAVE_ARCH_AUDITSYSCALL
87 select ARCH_SUPPORTS_ATOMIC_RMW
88 select ARCH_SUPPORTS_DEBUG_PAGEALLOC
89 select HAVE_NMI
90 select HAVE_REGS_AND_STACK_ACCESS_API
91 select ARCH_USE_QUEUED_RWLOCKS
92 select ARCH_USE_QUEUED_SPINLOCKS
93 select GENERIC_TIME_VSYSCALL
94 select ARCH_CLOCKSOURCE_DATA
95 select ARCH_HAS_PTE_SPECIAL
96 select PCI_DOMAINS if PCI
97 select ARCH_HAS_GIGANTIC_PAGE
98 select HAVE_SOFTIRQ_ON_OWN_STACK
99
100config ARCH_PROC_KCORE_TEXT
101 def_bool y
102
103config CPU_BIG_ENDIAN
104 def_bool y
105
106config ARCH_ATU
107 bool
108 default y if SPARC64
109
110config STACKTRACE_SUPPORT
111 bool
112 default y if SPARC64
113
114config LOCKDEP_SUPPORT
115 bool
116 default y if SPARC64
117
118config ARCH_HIBERNATION_POSSIBLE
119 def_bool y if SPARC64
120
121config AUDIT_ARCH
122 bool
123 default y
124
125config HAVE_SETUP_PER_CPU_AREA
126 def_bool y if SPARC64
127
128config NEED_PER_CPU_EMBED_FIRST_CHUNK
129 def_bool y if SPARC64
130
131config NEED_PER_CPU_PAGE_FIRST_CHUNK
132 def_bool y if SPARC64
133
134config MMU
135 bool
136 default y
137
138config HIGHMEM
139 bool
140 default y if SPARC32
141 select KMAP_LOCAL
142
143config GENERIC_ISA_DMA
144 bool
145 default y if SPARC32
146
147config PGTABLE_LEVELS
148 default 4 if 64BIT
149 default 3
150
151config ARCH_SUPPORTS_UPROBES
152 def_bool y if SPARC64
153
154menu "Processor type and features"
155
156config SMP
157 bool "Symmetric multi-processing support"
158 help
159 This enables support for systems with more than one CPU. If you have
160 a system with only one CPU, say N. If you have a system with more
161 than one CPU, say Y.
162
163 If you say N here, the kernel will run on uni- and multiprocessor
164 machines, but will use only one CPU of a multiprocessor machine. If
165 you say Y here, the kernel will run on many, but not all,
166 uniprocessor machines. On a uniprocessor machine, the kernel
167 will run faster if you say N here.
168
169 People using multiprocessor machines who say Y here should also say
170 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
171 Management" code will be disabled if you say Y here.
172
173 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
174 available at <https://www.tldp.org/docs.html#howto>.
175
176 If you don't know what to do here, say N.
177
178config NR_CPUS
179 int "Maximum number of CPUs"
180 depends on SMP
181 range 2 32 if SPARC32
182 range 2 4096 if SPARC64
183 default 32 if SPARC32
184 default 4096 if SPARC64
185
186source "kernel/Kconfig.hz"
187
188config GENERIC_HWEIGHT
189 bool
190 default y
191
192config GENERIC_CALIBRATE_DELAY
193 bool
194 default y
195
196config ARCH_MAY_HAVE_PC_FDC
197 bool
198 default y
199
200config EMULATED_CMPXCHG
201 bool
202 default y if SPARC32
203 help
204 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
205 is emulated, and therefore it is not completely atomic.
206
207
208config SPARC32_SMP
209 bool
210 default y
211 depends on SPARC32 && SMP
212
213config SPARC64_SMP
214 bool
215 default y
216 depends on SPARC64 && SMP
217
218config EARLYFB
219 bool "Support for early boot text console"
220 default y
221 depends on SPARC64
222 help
223 Say Y here to enable a faster early framebuffer boot console.
224
225config HOTPLUG_CPU
226 bool "Support for hot-pluggable CPUs"
227 depends on SPARC64 && SMP
228 help
229 Say Y here to experiment with turning CPUs off and on. CPUs
230 can be controlled through /sys/devices/system/cpu/cpu#.
231 Say N if you want to disable CPU hotplug.
232
233if SPARC64
234source "drivers/cpufreq/Kconfig"
235endif
236
237config US3_MC
238 tristate "UltraSPARC-III Memory Controller driver"
239 depends on SPARC64
240 default y
241 help
242 This adds a driver for the UltraSPARC-III memory controller.
243 Loading this driver allows exact mnemonic strings to be
244 printed in the event of a memory error, so that the faulty DIMM
245 on the motherboard can be matched to the error.
246
247 If in doubt, say Y, as this information can be very useful.
248
249
250config GENERIC_LOCKBREAK
251 bool
252 default y
253 depends on SPARC64 && SMP && PREEMPTION
254
255config NUMA
256 bool "NUMA support"
257 depends on SPARC64 && SMP
258
259config NODES_SHIFT
260 int "Maximum NUMA Nodes (as a power of 2)"
261 range 4 5 if SPARC64
262 default "5"
263 depends on NUMA
264 help
265 Specify the maximum number of NUMA Nodes available on the target
266 system. Increases memory reserved to accommodate various tables.
267
268config ARCH_SPARSEMEM_ENABLE
269 def_bool y if SPARC64
270 select SPARSEMEM_VMEMMAP_ENABLE
271
272config ARCH_SPARSEMEM_DEFAULT
273 def_bool y if SPARC64
274
275config FORCE_MAX_ZONEORDER
276 int "Maximum zone order"
277 default "13"
278 help
279 The kernel memory allocator divides physically contiguous memory
280 blocks into "zones", where each zone is a power of two number of
281 pages. This option selects the largest power of two that the kernel
282 keeps in the memory allocator. If you need to allocate very large
283 blocks of physically contiguous memory, then you may need to
284 increase this value.
285
286 This config option is actually maximum order plus one. For example,
287 a value of 13 means that the largest free memory block is 2^12 pages.
288
289if SPARC64
290source "kernel/power/Kconfig"
291endif
292
293config SCHED_SMT
294 bool "SMT (Hyperthreading) scheduler support"
295 depends on SPARC64 && SMP
296 default y
297 help
298 SMT scheduler support improves the CPU scheduler's decision making
299 when dealing with SPARC cpus at a cost of slightly increased overhead
300 in some places. If unsure say N here.
301
302config SCHED_MC
303 bool "Multi-core scheduler support"
304 depends on SPARC64 && SMP
305 default y
306 help
307 Multi-core scheduler support improves the CPU scheduler's decision
308 making when dealing with multi-core CPU chips at a cost of slightly
309 increased overhead in some places. If unsure say N here.
310
311config CMDLINE_BOOL
312 bool "Default bootloader kernel arguments"
313 depends on SPARC64
314
315config CMDLINE
316 string "Initial kernel command string"
317 depends on CMDLINE_BOOL
318 default "console=ttyS0,9600 root=/dev/sda1"
319 help
320 Say Y here if you want to be able to pass default arguments to
321 the kernel. This will be overridden by the bootloader, if you
322 use one (such as SILO). This is most useful if you want to boot
323 a kernel from TFTP, and want default options to be available
324 with having them passed on the command line.
325
326 NOTE: This option WILL override the PROM bootargs setting!
327
328config SUN_PM
329 bool
330 default y if SPARC32
331 help
332 Enable power management and CPU standby features on supported
333 SPARC platforms.
334
335config SPARC_LED
336 tristate "Sun4m LED driver"
337 depends on SPARC32
338 help
339 This driver toggles the front-panel LED on sun4m systems
340 in a user-specifiable manner. Its state can be probed
341 by reading /proc/led and its blinking mode can be changed
342 via writes to /proc/led
343
344config SERIAL_CONSOLE
345 bool
346 depends on SPARC32
347 default y
348 help
349 If you say Y here, it will be possible to use a serial port as the
350 system console (the system console is the device which receives all
351 kernel messages and warnings and which allows logins in single user
352 mode). This could be useful if some terminal or printer is connected
353 to that serial port.
354
355 Even if you say Y here, the currently visible virtual console
356 (/dev/tty0) will still be used as the system console by default, but
357 you can alter that using a kernel command line option such as
358 "console=ttyS1". (Try "man bootparam" or see the documentation of
359 your boot loader (silo) about how to pass options to the kernel at
360 boot time.)
361
362 If you don't have a graphics card installed and you say Y here, the
363 kernel will automatically use the first serial line, /dev/ttyS0, as
364 system console.
365
366 If unsure, say N.
367
368config SPARC_LEON
369 bool "Sparc Leon processor family"
370 depends on SPARC32
371 select USB_EHCI_BIG_ENDIAN_MMIO
372 select USB_EHCI_BIG_ENDIAN_DESC
373 select USB_UHCI_BIG_ENDIAN_MMIO
374 select USB_UHCI_BIG_ENDIAN_DESC
375 help
376 If you say Y here if you are running on a SPARC-LEON processor.
377 The LEON processor is a synthesizable VHDL model of the
378 SPARC-v8 standard. LEON is part of the GRLIB collection of
379 IP cores that are distributed under GPL. GRLIB can be downloaded
380 from www.gaisler.com. You can download a sparc-linux cross-compilation
381 toolchain at www.gaisler.com.
382
383if SPARC_LEON
384menu "U-Boot options"
385
386config UBOOT_LOAD_ADDR
387 hex "uImage Load Address"
388 default 0x40004000
389 help
390 U-Boot kernel load address, the address in physical address space
391 where u-boot will place the Linux kernel before booting it.
392 This address is normally the base address of main memory + 0x4000.
393
394config UBOOT_FLASH_ADDR
395 hex "uImage.o Load Address"
396 default 0x00080000
397 help
398 Optional setting only affecting the uImage.o ELF-image used to
399 download the uImage file to the target using a ELF-loader other than
400 U-Boot. It may for example be used to download an uImage to FLASH with
401 the GRMON utility before even starting u-boot.
402
403config UBOOT_ENTRY_ADDR
404 hex "uImage Entry Address"
405 default 0xf0004000
406 help
407 Do not change this unless you know what you're doing. This is
408 hardcoded by the SPARC32 and LEON port.
409
410 This is the virtual address u-boot jumps to when booting the Linux
411 Kernel.
412
413endmenu
414endif
415
416endmenu
417
418menu "Bus options (PCI etc.)"
419config SBUS
420 bool
421 default y
422
423config SBUSCHAR
424 bool
425 default y
426
427config SUN_LDOMS
428 bool "Sun Logical Domains support"
429 depends on SPARC64
430 help
431 Say Y here is you want to support virtual devices via
432 Logical Domains.
433
434config PCIC_PCI
435 bool
436 depends on PCI && SPARC32 && !SPARC_LEON
437 default y
438
439config LEON_PCI
440 bool
441 depends on PCI && SPARC_LEON
442 default y
443
444config SPARC_GRPCI1
445 bool "GRPCI Host Bridge Support"
446 depends on LEON_PCI
447 default y
448 help
449 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
450 PCI host controller is typically found in GRLIB SPARC32/LEON
451 systems. The driver has one property (all_pci_errors) controlled
452 from the bootloader that makes the GRPCI to generate interrupts
453 on detected PCI Parity and System errors.
454
455config SPARC_GRPCI2
456 bool "GRPCI2 Host Bridge Support"
457 depends on LEON_PCI
458 default y
459 help
460 Say Y here to include the GRPCI2 Host Bridge Driver.
461
462config SUN_OPENPROMFS
463 tristate "Openprom tree appears in /proc/openprom"
464 help
465 If you say Y, the OpenPROM device tree will be available as a
466 virtual file system, which you can mount to /proc/openprom by "mount
467 -t openpromfs none /proc/openprom".
468
469 To compile the /proc/openprom support as a module, choose M here: the
470 module will be called openpromfs.
471
472 Only choose N if you know in advance that you will not need to modify
473 OpenPROM settings on the running system.
474
475
476config SPARC64_PCI
477 bool
478 default y
479 depends on SPARC64 && PCI
480
481config SPARC64_PCI_MSI
482 bool
483 default y
484 depends on SPARC64_PCI && PCI_MSI
485
486endmenu
487
488config COMPAT
489 bool
490 depends on SPARC64
491 default y
492 select HAVE_UID16
493 select ARCH_WANT_OLD_COMPAT_IPC
494 select COMPAT_OLD_SIGACTION
495
496config SYSVIPC_COMPAT
497 bool
498 depends on COMPAT && SYSVIPC
499 default y
500
501source "drivers/sbus/char/Kconfig"
502
