Loading...
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 TRACE_IRQFLAGS_SUPPORT
50
51config SPARC32
52 def_bool !64BIT
53 select ARCH_32BIT_OFF_T
54 select ARCH_HAS_SYNC_DMA_FOR_CPU
55 select CLZ_TAB
56 select DMA_DIRECT_REMAP
57 select GENERIC_ATOMIC64
58 select HAVE_UID16
59 select OLD_SIGACTION
60 select ZONE_DMA
61
62config SPARC64
63 def_bool 64BIT
64 select ALTERNATE_USER_ADDRESS_SPACE
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 MMU_GATHER_MERGE_VMAS
71 select MMU_GATHER_NO_FLUSH_CACHE
72 select HAVE_ARCH_TRANSPARENT_HUGEPAGE
73 select HAVE_DYNAMIC_FTRACE
74 select HAVE_FTRACE_MCOUNT_RECORD
75 select HAVE_SYSCALL_TRACEPOINTS
76 select HAVE_CONTEXT_TRACKING_USER
77 select HAVE_TIF_NOHZ
78 select HAVE_DEBUG_KMEMLEAK
79 select IOMMU_HELPER
80 select SPARSE_IRQ
81 select RTC_DRV_CMOS
82 select RTC_DRV_BQ4802
83 select RTC_DRV_SUN4V
84 select RTC_DRV_STARFIRE
85 select HAVE_PERF_EVENTS
86 select PERF_USE_VMALLOC
87 select ARCH_HAVE_NMI_SAFE_CMPXCHG
88 select HAVE_C_RECORDMCOUNT
89 select HAVE_ARCH_AUDITSYSCALL
90 select ARCH_SUPPORTS_ATOMIC_RMW
91 select ARCH_SUPPORTS_DEBUG_PAGEALLOC
92 select HAVE_NMI
93 select HAVE_REGS_AND_STACK_ACCESS_API
94 select ARCH_USE_QUEUED_RWLOCKS
95 select ARCH_USE_QUEUED_SPINLOCKS
96 select GENERIC_TIME_VSYSCALL
97 select ARCH_CLOCKSOURCE_DATA
98 select ARCH_HAS_PTE_SPECIAL
99 select PCI_DOMAINS if PCI
100 select ARCH_HAS_GIGANTIC_PAGE
101 select HAVE_SOFTIRQ_ON_OWN_STACK
102 select HAVE_SETUP_PER_CPU_AREA
103 select NEED_PER_CPU_EMBED_FIRST_CHUNK
104 select NEED_PER_CPU_PAGE_FIRST_CHUNK
105
106config ARCH_PROC_KCORE_TEXT
107 def_bool y
108
109config CPU_BIG_ENDIAN
110 def_bool y
111
112config ARCH_ATU
113 bool
114 default y if SPARC64
115
116config STACKTRACE_SUPPORT
117 bool
118 default y if SPARC64
119
120config LOCKDEP_SUPPORT
121 bool
122 default y if SPARC64
123
124config ARCH_HIBERNATION_POSSIBLE
125 def_bool y if SPARC64
126
127config AUDIT_ARCH
128 bool
129 default y
130
131config MMU
132 bool
133 default y
134
135config HIGHMEM
136 bool
137 default y if SPARC32
138 select KMAP_LOCAL
139
140config GENERIC_ISA_DMA
141 bool
142 default y if SPARC32
143
144config PGTABLE_LEVELS
145 default 4 if 64BIT
146 default 3
147
148config ARCH_SUPPORTS_UPROBES
149 def_bool y if SPARC64
150
151menu "Processor type and features"
152
153config SMP
154 bool "Symmetric multi-processing support"
155 help
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
158 than one CPU, say Y.
159
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.
165
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.
169
170 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
171 available at <https://www.tldp.org/docs.html#howto>.
172
173 If you don't know what to do here, say N.
174
175config NR_CPUS
176 int "Maximum number of CPUs"
177 depends on SMP
178 range 2 32 if SPARC32
179 range 2 4096 if SPARC64
180 default 32 if SPARC32
181 default 4096 if SPARC64
182
183source "kernel/Kconfig.hz"
184
185config GENERIC_HWEIGHT
186 bool
187 default y
188
189config GENERIC_CALIBRATE_DELAY
190 bool
191 default y
192
193config ARCH_MAY_HAVE_PC_FDC
194 bool
195 default y
196
197config EMULATED_CMPXCHG
198 bool
199 default y if SPARC32
200 help
201 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
202 is emulated, and therefore it is not completely atomic.
203
204# Makefile helpers
205config SPARC32_SMP
206 bool
207 default y
208 depends on SPARC32 && SMP
209
210config SPARC64_SMP
211 bool
212 default y
213 depends on SPARC64 && SMP
214
215config EARLYFB
216 bool "Support for early boot text console"
217 default y
218 depends on SPARC64
219 help
220 Say Y here to enable a faster early framebuffer boot console.
221
222config HOTPLUG_CPU
223 bool "Support for hot-pluggable CPUs"
224 depends on SPARC64 && SMP
225 help
226 Say Y here to experiment with turning CPUs off and on. CPUs
227 can be controlled through /sys/devices/system/cpu/cpu#.
228 Say N if you want to disable CPU hotplug.
229
230if SPARC64
231source "drivers/cpufreq/Kconfig"
232endif
233
234config US3_MC
235 tristate "UltraSPARC-III Memory Controller driver"
236 depends on SPARC64
237 default y
238 help
239 This adds a driver for the UltraSPARC-III memory controller.
240 Loading this driver allows exact mnemonic strings to be
241 printed in the event of a memory error, so that the faulty DIMM
242 on the motherboard can be matched to the error.
243
244 If in doubt, say Y, as this information can be very useful.
245
246# Global things across all Sun machines.
247config GENERIC_LOCKBREAK
248 bool
249 default y
250 depends on SPARC64 && SMP && PREEMPTION
251
252config NUMA
253 bool "NUMA support"
254 depends on SPARC64 && SMP
255
256config NODES_SHIFT
257 int "Maximum NUMA Nodes (as a power of 2)"
258 range 4 5 if SPARC64
259 default "5"
260 depends on NUMA
261 help
262 Specify the maximum number of NUMA Nodes available on the target
263 system. Increases memory reserved to accommodate various tables.
264
265config ARCH_SPARSEMEM_ENABLE
266 def_bool y if SPARC64
267 select SPARSEMEM_VMEMMAP_ENABLE
268
269config ARCH_SPARSEMEM_DEFAULT
270 def_bool y if SPARC64
271
272config ARCH_FORCE_MAX_ORDER
273 int "Maximum zone order"
274 default "13"
275 help
276 The kernel memory allocator divides physically contiguous memory
277 blocks into "zones", where each zone is a power of two number of
278 pages. This option selects the largest power of two that the kernel
279 keeps in the memory allocator. If you need to allocate very large
280 blocks of physically contiguous memory, then you may need to
281 increase this value.
282
283 This config option is actually maximum order plus one. For example,
284 a value of 13 means that the largest free memory block is 2^12 pages.
285
286if SPARC64
287source "kernel/power/Kconfig"
288endif
289
290config SCHED_SMT
291 bool "SMT (Hyperthreading) scheduler support"
292 depends on SPARC64 && SMP
293 default y
294 help
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.
298
299config SCHED_MC
300 bool "Multi-core scheduler support"
301 depends on SPARC64 && SMP
302 default y
303 help
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.
307
308config CMDLINE_BOOL
309 bool "Default bootloader kernel arguments"
310 depends on SPARC64
311
312config CMDLINE
313 string "Initial kernel command string"
314 depends on CMDLINE_BOOL
315 default "console=ttyS0,9600 root=/dev/sda1"
316 help
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.
322
323 NOTE: This option WILL override the PROM bootargs setting!
324
325config SUN_PM
326 bool
327 default y if SPARC32
328 help
329 Enable power management and CPU standby features on supported
330 SPARC platforms.
331
332config SPARC_LED
333 tristate "Sun4m LED driver"
334 depends on SPARC32
335 help
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
340
341config SERIAL_CONSOLE
342 bool
343 depends on SPARC32
344 default y
345 help
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
350 to that serial port.
351
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
357 boot time.)
358
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
361 system console.
362
363 If unsure, say N.
364
365config SPARC_LEON
366 bool "Sparc Leon processor family"
367 depends on SPARC32
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
372 help
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.
379
380if SPARC_LEON
381menu "U-Boot options"
382
383config UBOOT_LOAD_ADDR
384 hex "uImage Load Address"
385 default 0x40004000
386 help
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.
390
391config UBOOT_FLASH_ADDR
392 hex "uImage.o Load Address"
393 default 0x00080000
394 help
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.
399
400config UBOOT_ENTRY_ADDR
401 hex "uImage Entry Address"
402 default 0xf0004000
403 help
404 Do not change this unless you know what you're doing. This is
405 hardcoded by the SPARC32 and LEON port.
406
407 This is the virtual address u-boot jumps to when booting the Linux
408 Kernel.
409
410endmenu
411endif
412
413endmenu
414
415menu "Bus options (PCI etc.)"
416config SBUS
417 bool
418 default y
419
420config SBUSCHAR
421 bool
422 default y
423
424config SUN_LDOMS
425 bool "Sun Logical Domains support"
426 depends on SPARC64
427 help
428 Say Y here is you want to support virtual devices via
429 Logical Domains.
430
431config PCIC_PCI
432 bool
433 depends on PCI && SPARC32 && !SPARC_LEON
434 default y
435
436config LEON_PCI
437 bool
438 depends on PCI && SPARC_LEON
439 default y
440
441config SPARC_GRPCI1
442 bool "GRPCI Host Bridge Support"
443 depends on LEON_PCI
444 default y
445 help
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.
451
452config SPARC_GRPCI2
453 bool "GRPCI2 Host Bridge Support"
454 depends on LEON_PCI
455 default y
456 help
457 Say Y here to include the GRPCI2 Host Bridge Driver.
458
459config SUN_OPENPROMFS
460 tristate "Openprom tree appears in /proc/openprom"
461 help
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".
465
466 To compile the /proc/openprom support as a module, choose M here: the
467 module will be called openpromfs.
468
469 Only choose N if you know in advance that you will not need to modify
470 OpenPROM settings on the running system.
471
472# Makefile helpers
473config SPARC64_PCI
474 bool
475 default y
476 depends on SPARC64 && PCI
477
478config SPARC64_PCI_MSI
479 bool
480 default y
481 depends on SPARC64_PCI && PCI_MSI
482
483endmenu
484
485config COMPAT
486 bool
487 depends on SPARC64
488 default y
489 select HAVE_UID16
490 select ARCH_WANT_OLD_COMPAT_IPC
491 select COMPAT_OLD_SIGACTION
492
493source "drivers/sbus/char/Kconfig"
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 HAS_IOPORT
36 select HAVE_HARDLOCKUP_DETECTOR_SPARC64 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
45 select OLD_SIGSUSPEND
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
51
52config SPARC32
53 def_bool !64BIT
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 CLZ_TAB
58 select DMA_DIRECT_REMAP
59 select GENERIC_ATOMIC64
60 select HAVE_UID16
61 select LOCK_MM_AND_FIND_VMA
62 select OLD_SIGACTION
63 select ZONE_DMA
64
65config SPARC64
66 def_bool 64BIT
67 select ALTERNATE_USER_ADDRESS_SPACE
68 select HAVE_FUNCTION_TRACER
69 select HAVE_FUNCTION_GRAPH_TRACER
70 select HAVE_KRETPROBES
71 select HAVE_KPROBES
72 select MMU_GATHER_RCU_TABLE_FREE if SMP
73 select MMU_GATHER_MERGE_VMAS
74 select MMU_GATHER_NO_FLUSH_CACHE
75 select HAVE_ARCH_TRANSPARENT_HUGEPAGE
76 select HAVE_DYNAMIC_FTRACE
77 select HAVE_FTRACE_MCOUNT_RECORD
78 select HAVE_SYSCALL_TRACEPOINTS
79 select HAVE_CONTEXT_TRACKING_USER
80 select HAVE_TIF_NOHZ
81 select HAVE_DEBUG_KMEMLEAK
82 select IOMMU_HELPER
83 select SPARSE_IRQ
84 select RTC_DRV_CMOS
85 select RTC_DRV_BQ4802
86 select RTC_DRV_SUN4V
87 select RTC_DRV_STARFIRE
88 select HAVE_PERF_EVENTS
89 select PERF_USE_VMALLOC
90 select ARCH_HAVE_NMI_SAFE_CMPXCHG
91 select HAVE_C_RECORDMCOUNT
92 select HAVE_ARCH_AUDITSYSCALL
93 select ARCH_SUPPORTS_ATOMIC_RMW
94 select ARCH_SUPPORTS_DEBUG_PAGEALLOC
95 select HAVE_NMI
96 select HAVE_REGS_AND_STACK_ACCESS_API
97 select ARCH_USE_QUEUED_RWLOCKS
98 select ARCH_USE_QUEUED_SPINLOCKS
99 select GENERIC_TIME_VSYSCALL
100 select ARCH_CLOCKSOURCE_DATA
101 select ARCH_HAS_PTE_SPECIAL
102 select PCI_DOMAINS if PCI
103 select ARCH_HAS_GIGANTIC_PAGE
104 select HAVE_SOFTIRQ_ON_OWN_STACK
105 select HAVE_SETUP_PER_CPU_AREA
106 select NEED_PER_CPU_EMBED_FIRST_CHUNK
107 select NEED_PER_CPU_PAGE_FIRST_CHUNK
108
109config ARCH_PROC_KCORE_TEXT
110 def_bool y
111
112config CPU_BIG_ENDIAN
113 def_bool y
114
115config ARCH_ATU
116 bool
117 default y if SPARC64
118
119config STACKTRACE_SUPPORT
120 bool
121 default y if SPARC64
122
123config LOCKDEP_SUPPORT
124 bool
125 default y if SPARC64
126
127config ARCH_HIBERNATION_POSSIBLE
128 def_bool y if SPARC64
129
130config AUDIT_ARCH
131 bool
132 default y
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# Makefile helpers
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# Global things across all Sun machines.
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 ARCH_FORCE_MAX_ORDER
276 int "Order of maximal physically contiguous allocations"
277 default "12"
278 help
279 The kernel page allocator limits the size of maximal physically
280 contiguous allocations. The limit is called MAX_PAGE_ORDER and it
281 defines the maximal power of two of number of pages that can be
282 allocated as a single contiguous block. This option allows
283 overriding the default setting when ability to allocate very
284 large blocks of physically contiguous memory is required.
285
286 Don't change if unsure.
287
288if SPARC64 || COMPILE_TEST
289source "kernel/power/Kconfig"
290endif
291
292config SCHED_SMT
293 bool "SMT (Hyperthreading) scheduler support"
294 depends on SPARC64 && SMP
295 default y
296 help
297 SMT scheduler support improves the CPU scheduler's decision making
298 when dealing with SPARC cpus at a cost of slightly increased overhead
299 in some places. If unsure say N here.
300
301config SCHED_MC
302 bool "Multi-core scheduler support"
303 depends on SPARC64 && SMP
304 default y
305 help
306 Multi-core scheduler support improves the CPU scheduler's decision
307 making when dealing with multi-core CPU chips at a cost of slightly
308 increased overhead in some places. If unsure say N here.
309
310config CMDLINE_BOOL
311 bool "Default bootloader kernel arguments"
312 depends on SPARC64
313
314config CMDLINE
315 string "Initial kernel command string"
316 depends on CMDLINE_BOOL
317 default "console=ttyS0,9600 root=/dev/sda1"
318 help
319 Say Y here if you want to be able to pass default arguments to
320 the kernel. This will be overridden by the bootloader, if you
321 use one (such as SILO). This is most useful if you want to boot
322 a kernel from TFTP, and want default options to be available
323 with having them passed on the command line.
324
325 NOTE: This option WILL override the PROM bootargs setting!
326
327config SUN_PM
328 bool
329 default y if SPARC32
330 help
331 Enable power management and CPU standby features on supported
332 SPARC platforms.
333
334config SPARC_LED
335 tristate "Sun4m LED driver"
336 depends on SPARC32
337 help
338 This driver toggles the front-panel LED on sun4m systems
339 in a user-specifiable manner. Its state can be probed
340 by reading /proc/led and its blinking mode can be changed
341 via writes to /proc/led
342
343config SERIAL_CONSOLE
344 bool
345 depends on SPARC32
346 default y
347 help
348 If you say Y here, it will be possible to use a serial port as the
349 system console (the system console is the device which receives all
350 kernel messages and warnings and which allows logins in single user
351 mode). This could be useful if some terminal or printer is connected
352 to that serial port.
353
354 Even if you say Y here, the currently visible virtual console
355 (/dev/tty0) will still be used as the system console by default, but
356 you can alter that using a kernel command line option such as
357 "console=ttyS1". (Try "man bootparam" or see the documentation of
358 your boot loader (silo) about how to pass options to the kernel at
359 boot time.)
360
361 If you don't have a graphics card installed and you say Y here, the
362 kernel will automatically use the first serial line, /dev/ttyS0, as
363 system console.
364
365 If unsure, say N.
366
367config SPARC_LEON
368 bool "Sparc Leon processor family"
369 depends on SPARC32
370 select USB_EHCI_BIG_ENDIAN_MMIO
371 select USB_EHCI_BIG_ENDIAN_DESC
372 select USB_UHCI_BIG_ENDIAN_MMIO
373 select USB_UHCI_BIG_ENDIAN_DESC
374 help
375 If you say Y here if you are running on a SPARC-LEON processor.
376 The LEON processor is a synthesizable VHDL model of the
377 SPARC-v8 standard. LEON is part of the GRLIB collection of
378 IP cores that are distributed under GPL. GRLIB can be downloaded
379 from www.gaisler.com. You can download a sparc-linux cross-compilation
380 toolchain at www.gaisler.com.
381
382if SPARC_LEON
383menu "U-Boot options"
384
385config UBOOT_LOAD_ADDR
386 hex "uImage Load Address"
387 default 0x40004000
388 help
389 U-Boot kernel load address, the address in physical address space
390 where u-boot will place the Linux kernel before booting it.
391 This address is normally the base address of main memory + 0x4000.
392
393config UBOOT_FLASH_ADDR
394 hex "uImage.o Load Address"
395 default 0x00080000
396 help
397 Optional setting only affecting the uImage.o ELF-image used to
398 download the uImage file to the target using a ELF-loader other than
399 U-Boot. It may for example be used to download an uImage to FLASH with
400 the GRMON utility before even starting u-boot.
401
402config UBOOT_ENTRY_ADDR
403 hex "uImage Entry Address"
404 default 0xf0004000
405 help
406 Do not change this unless you know what you're doing. This is
407 hardcoded by the SPARC32 and LEON port.
408
409 This is the virtual address u-boot jumps to when booting the Linux
410 Kernel.
411
412endmenu
413endif
414
415endmenu
416
417menu "Bus options (PCI etc.)"
418config SBUS
419 bool
420 default y
421
422config SBUSCHAR
423 bool
424 default y
425
426config SUN_LDOMS
427 bool "Sun Logical Domains support"
428 depends on SPARC64
429 help
430 Say Y here is you want to support virtual devices via
431 Logical Domains.
432
433config PCIC_PCI
434 bool
435 depends on PCI && SPARC32 && !SPARC_LEON
436 default y
437
438config LEON_PCI
439 bool
440 depends on PCI && SPARC_LEON
441 default y
442
443config SPARC_GRPCI1
444 bool "GRPCI Host Bridge Support"
445 depends on LEON_PCI
446 default y
447 help
448 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
449 PCI host controller is typically found in GRLIB SPARC32/LEON
450 systems. The driver has one property (all_pci_errors) controlled
451 from the bootloader that makes the GRPCI to generate interrupts
452 on detected PCI Parity and System errors.
453
454config SPARC_GRPCI2
455 bool "GRPCI2 Host Bridge Support"
456 depends on LEON_PCI
457 default y
458 help
459 Say Y here to include the GRPCI2 Host Bridge Driver.
460
461config SUN_OPENPROMFS
462 tristate "Openprom tree appears in /proc/openprom"
463 help
464 If you say Y, the OpenPROM device tree will be available as a
465 virtual file system, which you can mount to /proc/openprom by "mount
466 -t openpromfs none /proc/openprom".
467
468 To compile the /proc/openprom support as a module, choose M here: the
469 module will be called openpromfs.
470
471 Only choose N if you know in advance that you will not need to modify
472 OpenPROM settings on the running system.
473
474# Makefile helpers
475config SPARC64_PCI
476 bool
477 default y
478 depends on SPARC64 && PCI
479
480config SPARC64_PCI_MSI
481 bool
482 default y
483 depends on SPARC64_PCI && PCI_MSI
484
485endmenu
486
487config COMPAT
488 bool
489 depends on SPARC64
490 default y
491 select HAVE_UID16
492 select ARCH_WANT_OLD_COMPAT_IPC
493 select COMPAT_OLD_SIGACTION
494
495source "drivers/sbus/char/Kconfig"