1# SPDX-License-Identifier: GPL-2.0-only
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 CLZ_TAB
57	select DMA_DIRECT_REMAP
58	select GENERIC_ATOMIC64
59	select HAVE_UID16
60	select OLD_SIGACTION
61	select ZONE_DMA
62
63config SPARC64
64	def_bool 64BIT
65	select HAVE_FUNCTION_TRACER
66	select HAVE_FUNCTION_GRAPH_TRACER
67	select HAVE_KRETPROBES
68	select HAVE_KPROBES
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
75	select HAVE_TIF_NOHZ
76	select HAVE_DEBUG_KMEMLEAK
77	select IOMMU_HELPER
78	select SPARSE_IRQ
79	select RTC_DRV_CMOS
80	select RTC_DRV_BQ4802
81	select RTC_DRV_SUN4V
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
90	select HAVE_NMI
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
100
101config ARCH_PROC_KCORE_TEXT
102	def_bool y
103
104config CPU_BIG_ENDIAN
105	def_bool y
106
107config ARCH_ATU
108	bool
109	default y if SPARC64
110
111config STACKTRACE_SUPPORT
112	bool
113	default y if SPARC64
114
115config LOCKDEP_SUPPORT
116	bool
117	default y if SPARC64
118
119config ARCH_HIBERNATION_POSSIBLE
120	def_bool y if SPARC64
121
122config AUDIT_ARCH
123	bool
124	default y
125
126config HAVE_SETUP_PER_CPU_AREA
127	def_bool y if SPARC64
128
129config NEED_PER_CPU_EMBED_FIRST_CHUNK
130	def_bool y if SPARC64
131
132config NEED_PER_CPU_PAGE_FIRST_CHUNK
133	def_bool y if SPARC64
134
135config MMU
136	bool
137	default y
138
139config HIGHMEM
140	bool
141	default y if SPARC32
142	select KMAP_LOCAL
143
144config GENERIC_ISA_DMA
145	bool
146	default y if SPARC32
147
148config PGTABLE_LEVELS
149	default 4 if 64BIT
150	default 3
151
152config ARCH_SUPPORTS_UPROBES
153	def_bool y if SPARC64
154
155menu "Processor type and features"
156
157config SMP
158	bool "Symmetric multi-processing support"
159	help
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
162	  than one CPU, say Y.
163
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.
169
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.
173
174	  See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
175	  available at <https://www.tldp.org/docs.html#howto>.
176
177	  If you don't know what to do here, say N.
178
179config NR_CPUS
180	int "Maximum number of CPUs"
181	depends on SMP
182	range 2 32 if SPARC32
183	range 2 4096 if SPARC64
184	default 32 if SPARC32
185	default 4096 if SPARC64
186
187source "kernel/Kconfig.hz"
188
189config GENERIC_HWEIGHT
190	bool
191	default y
192
193config GENERIC_CALIBRATE_DELAY
194	bool
195	default y
196
197config ARCH_MAY_HAVE_PC_FDC
198	bool
199	default y
200
201config EMULATED_CMPXCHG
202	bool
203	default y if SPARC32
204	help
205	  Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
206	  is emulated, and therefore it is not completely atomic.
207
208# Makefile helpers
209config SPARC32_SMP
210	bool
211	default y
212	depends on SPARC32 && SMP
213
214config SPARC64_SMP
215	bool
216	default y
217	depends on SPARC64 && SMP
218
219config EARLYFB
220	bool "Support for early boot text console"
221	default y
222	depends on SPARC64
223	help
224	  Say Y here to enable a faster early framebuffer boot console.
225
226config HOTPLUG_CPU
227	bool "Support for hot-pluggable CPUs"
228	depends on SPARC64 && SMP
229	help
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.
233
234if SPARC64
235source "drivers/cpufreq/Kconfig"
236endif
237
238config US3_MC
239	tristate "UltraSPARC-III Memory Controller driver"
240	depends on SPARC64
241	default y
242	help
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.
247
248	  If in doubt, say Y, as this information can be very useful.
249
250# Global things across all Sun machines.
251config GENERIC_LOCKBREAK
252	bool
253	default y
254	depends on SPARC64 && SMP && PREEMPTION
255
256config NUMA
257	bool "NUMA support"
258	depends on SPARC64 && SMP
259
260config NODES_SHIFT
261	int "Maximum NUMA Nodes (as a power of 2)"
262	range 4 5 if SPARC64
263	default "5"
264	depends on NUMA
265	help
266	  Specify the maximum number of NUMA Nodes available on the target
267	  system.  Increases memory reserved to accommodate various tables.
268
269config ARCH_SPARSEMEM_ENABLE
270	def_bool y if SPARC64
271	select SPARSEMEM_VMEMMAP_ENABLE
272
273config ARCH_SPARSEMEM_DEFAULT
274	def_bool y if SPARC64
275
276config FORCE_MAX_ZONEORDER
277	int "Maximum zone order"
278	default "13"
279	help
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
285	  increase this value.
286
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.
289
290if SPARC64
291source "kernel/power/Kconfig"
292endif
293
294config SCHED_SMT
295	bool "SMT (Hyperthreading) scheduler support"
296	depends on SPARC64 && SMP
297	default y
298	help
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.
302
303config SCHED_MC
304	bool "Multi-core scheduler support"
305	depends on SPARC64 && SMP
306	default y
307	help
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.
311
312config CMDLINE_BOOL
313	bool "Default bootloader kernel arguments"
314	depends on SPARC64
315
316config CMDLINE
317	string "Initial kernel command string"
318	depends on CMDLINE_BOOL
319	default "console=ttyS0,9600 root=/dev/sda1"
320	help
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.
326
327	  NOTE: This option WILL override the PROM bootargs setting!
328
329config SUN_PM
330	bool
331	default y if SPARC32
332	help
333	  Enable power management and CPU standby features on supported
334	  SPARC platforms.
335
336config SPARC_LED
337	tristate "Sun4m LED driver"
338	depends on SPARC32
339	help
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
344
345config SERIAL_CONSOLE
346	bool
347	depends on SPARC32
348	default y
349	help
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
354	  to that serial port.
355
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
361	  boot time.)
362
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
365	  system console.
366
367	  If unsure, say N.
368
369config SPARC_LEON
370	bool "Sparc Leon processor family"
371	depends on SPARC32
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
376	help
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.
383
384if SPARC_LEON
385menu "U-Boot options"
386
387config UBOOT_LOAD_ADDR
388	hex "uImage Load Address"
389	default 0x40004000
390	help
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.
394
395config UBOOT_FLASH_ADDR
396	hex "uImage.o Load Address"
397	default 0x00080000
398	help
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.
403
404config UBOOT_ENTRY_ADDR
405	hex "uImage Entry Address"
406	default 0xf0004000
407	help
408	 Do not change this unless you know what you're doing. This is
409	 hardcoded by the SPARC32 and LEON port.
410
411	 This is the virtual address u-boot jumps to when booting the Linux
412	 Kernel.
413
414endmenu
415endif
416
417endmenu
418
419menu "Bus options (PCI etc.)"
420config SBUS
421	bool
422	default y
423
424config SBUSCHAR
425	bool
426	default y
427
428config SUN_LDOMS
429	bool "Sun Logical Domains support"
430	depends on SPARC64
431	help
432	  Say Y here is you want to support virtual devices via
433	  Logical Domains.
434
435config PCIC_PCI
436	bool
437	depends on PCI && SPARC32 && !SPARC_LEON
438	default y
439
440config LEON_PCI
441	bool
442	depends on PCI && SPARC_LEON
443	default y
444
445config SPARC_GRPCI1
446	bool "GRPCI Host Bridge Support"
447	depends on LEON_PCI
448	default y
449	help
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.
455
456config SPARC_GRPCI2
457	bool "GRPCI2 Host Bridge Support"
458	depends on LEON_PCI
459	default y
460	help
461	  Say Y here to include the GRPCI2 Host Bridge Driver.
462
463config SUN_OPENPROMFS
464	tristate "Openprom tree appears in /proc/openprom"
465	help
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".
469
470	  To compile the /proc/openprom support as a module, choose M here: the
471	  module will be called openpromfs.
472
473	  Only choose N if you know in advance that you will not need to modify
474	  OpenPROM settings on the running system.
475
476# Makefile helpers
477config SPARC64_PCI
478	bool
479	default y
480	depends on SPARC64 && PCI
481
482config SPARC64_PCI_MSI
483	bool
484	default y
485	depends on SPARC64_PCI && PCI_MSI
486
487endmenu
488
489config COMPAT
490	bool
491	depends on SPARC64
492	default y
493	select HAVE_UID16
494	select ARCH_WANT_OLD_COMPAT_IPC
495	select COMPAT_OLD_SIGACTION
496
497config SYSVIPC_COMPAT
498	bool
499	depends on COMPAT && SYSVIPC
500	default y
501
502source "drivers/sbus/char/Kconfig"
503