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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_HAS_CPU_CACHE_ALIASING
17 select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI
18 select ARCH_MIGHT_HAVE_PC_SERIO
19 select DMA_OPS
20 select OF
21 select OF_PROMTREE
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
27 select HAVE_PCI
28 select SYSCTL_EXCEPTION_TRACE
29 select RTC_CLASS
30 select RTC_DRV_M48T59
31 select RTC_SYSTOHC
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
36 select HAS_IOPORT
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
46 select OLD_SIGSUSPEND
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
52
53config SPARC32
54 def_bool !64BIT
55 select ARCH_32BIT_OFF_T
56 select ARCH_HAS_CPU_FINALIZE_INIT if !SMP
57 select ARCH_HAS_SYNC_DMA_FOR_CPU
58 select CLZ_TAB
59 select DMA_DIRECT_REMAP
60 select GENERIC_ATOMIC64
61 select GENERIC_LIB_CMPDI2
62 select GENERIC_LIB_UCMPDI2
63 select HAVE_UID16
64 select HAVE_PAGE_SIZE_4KB
65 select LOCK_MM_AND_FIND_VMA
66 select OLD_SIGACTION
67 select ZONE_DMA
68
69config SPARC64
70 def_bool 64BIT
71 select ALTERNATE_USER_ADDRESS_SPACE
72 select HAVE_FUNCTION_TRACER
73 select HAVE_FUNCTION_GRAPH_TRACER
74 select HAVE_KRETPROBES
75 select HAVE_KPROBES
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
85 select HAVE_TIF_NOHZ
86 select HAVE_DEBUG_KMEMLEAK
87 select IOMMU_HELPER
88 select SPARSE_IRQ
89 select RTC_DRV_CMOS
90 select RTC_DRV_BQ4802
91 select RTC_DRV_SUN4V
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
100 select HAVE_NMI
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
113
114config ARCH_PROC_KCORE_TEXT
115 def_bool y
116
117config CPU_BIG_ENDIAN
118 def_bool y
119
120config STACKTRACE_SUPPORT
121 bool
122 default y if SPARC64
123
124config LOCKDEP_SUPPORT
125 bool
126 default y if SPARC64
127
128config ARCH_HIBERNATION_POSSIBLE
129 def_bool y if SPARC64
130
131config AUDIT_ARCH
132 bool
133 default y
134
135config MMU
136 bool
137 default y
138
139config HIGHMEM
140 bool
141 default y if SPARC32
142 select KMAP_LOCAL
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 select FONT_SUN8x16
220 select FONT_SUPPORT
221 help
222 Say Y here to enable a faster early framebuffer boot console.
223
224config HOTPLUG_CPU
225 bool "Support for hot-pluggable CPUs"
226 depends on SPARC64 && SMP
227 help
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.
231
232if SPARC64
233source "drivers/cpufreq/Kconfig"
234endif
235
236config US3_MC
237 tristate "UltraSPARC-III Memory Controller driver"
238 depends on SPARC64
239 default y
240 help
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.
245
246 If in doubt, say Y, as this information can be very useful.
247
248# Global things across all Sun machines.
249config GENERIC_LOCKBREAK
250 bool
251 default y
252 depends on SPARC64 && SMP && PREEMPTION
253
254config NUMA
255 bool "NUMA support"
256 depends on SPARC64 && SMP
257
258config NODES_SHIFT
259 int "Maximum NUMA Nodes (as a power of 2)"
260 range 4 5 if SPARC64
261 default "5"
262 depends on NUMA
263 help
264 Specify the maximum number of NUMA Nodes available on the target
265 system. Increases memory reserved to accommodate various tables.
266
267config ARCH_SPARSEMEM_ENABLE
268 def_bool y if SPARC64
269 select SPARSEMEM_VMEMMAP_ENABLE
270
271config ARCH_SPARSEMEM_DEFAULT
272 def_bool y if SPARC64
273
274config ARCH_FORCE_MAX_ORDER
275 int "Order of maximal physically contiguous allocations"
276 default "12"
277 help
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.
284
285 Don't change if unsure.
286
287if SPARC64 || COMPILE_TEST
288source "kernel/power/Kconfig"
289endif
290
291config SCHED_SMT
292 bool "SMT (Hyperthreading) scheduler support"
293 depends on SPARC64 && SMP
294 default y
295 help
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.
299
300config SCHED_MC
301 bool "Multi-core scheduler support"
302 depends on SPARC64 && SMP
303 default y
304 help
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.
308
309config CMDLINE_BOOL
310 bool "Default bootloader kernel arguments"
311 depends on SPARC64
312
313config CMDLINE
314 string "Initial kernel command string"
315 depends on CMDLINE_BOOL
316 default "console=ttyS0,9600 root=/dev/sda1"
317 help
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.
323
324 NOTE: This option WILL override the PROM bootargs setting!
325
326config SUN_PM
327 bool
328 default y if SPARC32
329 help
330 Enable power management and CPU standby features on supported
331 SPARC platforms.
332
333config SPARC_LED
334 tristate "Sun4m LED driver"
335 depends on SPARC32
336 help
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
341
342config SERIAL_CONSOLE
343 bool
344 depends on SPARC32
345 default y
346 help
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
351 to that serial port.
352
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
358 boot time.)
359
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
362 system console.
363
364 If unsure, say N.
365
366config SPARC_LEON
367 bool "Sparc Leon processor family"
368 depends on SPARC32
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
373 help
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.
380
381if SPARC_LEON
382menu "U-Boot options"
383
384config UBOOT_LOAD_ADDR
385 hex "uImage Load Address"
386 default 0x40004000
387 help
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.
391
392config UBOOT_FLASH_ADDR
393 hex "uImage.o Load Address"
394 default 0x00080000
395 help
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.
400
401config UBOOT_ENTRY_ADDR
402 hex "uImage Entry Address"
403 default 0xf0004000
404 help
405 Do not change this unless you know what you're doing. This is
406 hardcoded by the SPARC32 and LEON port.
407
408 This is the virtual address u-boot jumps to when booting the Linux
409 Kernel.
410
411endmenu
412endif
413
414endmenu
415
416menu "Bus options (PCI etc.)"
417config SBUS
418 bool
419 default y
420
421config SBUSCHAR
422 bool
423 default y
424
425config SUN_LDOMS
426 bool "Sun Logical Domains support"
427 depends on SPARC64
428 help
429 Say Y here is you want to support virtual devices via
430 Logical Domains.
431
432config PCIC_PCI
433 bool
434 depends on PCI && SPARC32 && !SPARC_LEON
435 default y
436
437config LEON_PCI
438 bool
439 depends on PCI && SPARC_LEON
440 default y
441
442config SPARC_GRPCI1
443 bool "GRPCI Host Bridge Support"
444 depends on LEON_PCI
445 default y
446 help
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.
452
453config SPARC_GRPCI2
454 bool "GRPCI2 Host Bridge Support"
455 depends on LEON_PCI
456 default y
457 help
458 Say Y here to include the GRPCI2 Host Bridge Driver.
459
460config SUN_OPENPROMFS
461 tristate "Openprom tree appears in /proc/openprom"
462 help
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".
466
467 To compile the /proc/openprom support as a module, choose M here: the
468 module will be called openpromfs.
469
470 Only choose N if you know in advance that you will not need to modify
471 OpenPROM settings on the running system.
472
473# Makefile helpers
474config SPARC64_PCI
475 bool
476 default y
477 depends on SPARC64 && PCI
478
479config SPARC64_PCI_MSI
480 bool
481 default y
482 depends on SPARC64_PCI && PCI_MSI
483
484endmenu
485
486config COMPAT
487 bool
488 depends on SPARC64
489 default y
490 select HAVE_UID16
491 select ARCH_WANT_OLD_COMPAT_IPC
492 select COMPAT_OLD_SIGACTION
493
494source "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 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"