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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_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"
1config 64BIT
2 bool "64-bit kernel" if ARCH = "sparc"
3 default ARCH = "sparc64"
4 help
5 SPARC is a family of RISC microprocessors designed and marketed by
6 Sun Microsystems, incorporated. They are very widely found in Sun
7 workstations and clones.
8
9 Say yes to build a 64-bit kernel - formerly known as sparc64
10 Say no to build a 32-bit kernel - formerly known as sparc
11
12config SPARC
13 bool
14 default y
15 select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI
16 select ARCH_MIGHT_HAVE_PC_SERIO
17 select OF
18 select OF_PROMTREE
19 select HAVE_IDE
20 select HAVE_OPROFILE
21 select HAVE_ARCH_KGDB if !SMP || SPARC64
22 select HAVE_ARCH_TRACEHOOK
23 select SYSCTL_EXCEPTION_TRACE
24 select ARCH_WANT_OPTIONAL_GPIOLIB
25 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
26 select RTC_CLASS
27 select RTC_DRV_M48T59
28 select HAVE_DMA_ATTRS
29 select HAVE_DMA_API_DEBUG
30 select HAVE_ARCH_JUMP_LABEL if SPARC64
31 select GENERIC_IRQ_SHOW
32 select ARCH_WANT_IPC_PARSE_VERSION
33 select GENERIC_PCI_IOMAP
34 select HAVE_NMI_WATCHDOG if SPARC64
35 select HAVE_BPF_JIT
36 select HAVE_DEBUG_BUGVERBOSE
37 select GENERIC_SMP_IDLE_THREAD
38 select GENERIC_CMOS_UPDATE
39 select GENERIC_CLOCKEVENTS
40 select GENERIC_STRNCPY_FROM_USER
41 select GENERIC_STRNLEN_USER
42 select MODULES_USE_ELF_RELA
43 select ODD_RT_SIGACTION
44 select OLD_SIGSUSPEND
45
46config SPARC32
47 def_bool !64BIT
48 select GENERIC_ATOMIC64
49 select CLZ_TAB
50 select HAVE_UID16
51 select OLD_SIGACTION
52
53config SPARC64
54 def_bool 64BIT
55 select HAVE_FUNCTION_TRACER
56 select HAVE_FUNCTION_GRAPH_TRACER
57 select HAVE_FUNCTION_GRAPH_FP_TEST
58 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
59 select HAVE_KRETPROBES
60 select HAVE_KPROBES
61 select HAVE_RCU_TABLE_FREE if SMP
62 select HAVE_MEMBLOCK
63 select HAVE_MEMBLOCK_NODE_MAP
64 select HAVE_ARCH_TRANSPARENT_HUGEPAGE
65 select HAVE_DYNAMIC_FTRACE
66 select HAVE_FTRACE_MCOUNT_RECORD
67 select HAVE_SYSCALL_TRACEPOINTS
68 select HAVE_CONTEXT_TRACKING
69 select HAVE_DEBUG_KMEMLEAK
70 select RTC_DRV_CMOS
71 select RTC_DRV_BQ4802
72 select RTC_DRV_SUN4V
73 select RTC_DRV_STARFIRE
74 select HAVE_PERF_EVENTS
75 select PERF_USE_VMALLOC
76 select IRQ_PREFLOW_FASTEOI
77 select ARCH_HAVE_NMI_SAFE_CMPXCHG
78 select HAVE_C_RECORDMCOUNT
79 select NO_BOOTMEM
80 select HAVE_ARCH_AUDITSYSCALL
81
82config ARCH_DEFCONFIG
83 string
84 default "arch/sparc/configs/sparc32_defconfig" if SPARC32
85 default "arch/sparc/configs/sparc64_defconfig" if SPARC64
86
87config IOMMU_HELPER
88 bool
89 default y if SPARC64
90
91config STACKTRACE_SUPPORT
92 bool
93 default y if SPARC64
94
95config LOCKDEP_SUPPORT
96 bool
97 default y if SPARC64
98
99config HAVE_LATENCYTOP_SUPPORT
100 bool
101 default y if SPARC64
102
103config ARCH_HIBERNATION_POSSIBLE
104 def_bool y if SPARC64
105
106config AUDIT_ARCH
107 bool
108 default y
109
110config HAVE_SETUP_PER_CPU_AREA
111 def_bool y if SPARC64
112
113config NEED_PER_CPU_EMBED_FIRST_CHUNK
114 def_bool y if SPARC64
115
116config NEED_PER_CPU_PAGE_FIRST_CHUNK
117 def_bool y if SPARC64
118
119config MMU
120 bool
121 default y
122
123config HIGHMEM
124 bool
125 default y if SPARC32
126
127config ZONE_DMA
128 bool
129 default y if SPARC32
130
131config NEED_DMA_MAP_STATE
132 def_bool y
133
134config NEED_SG_DMA_LENGTH
135 def_bool y
136
137config GENERIC_ISA_DMA
138 bool
139 default y if SPARC32
140
141config ARCH_SUPPORTS_DEBUG_PAGEALLOC
142 def_bool y if SPARC64
143
144source "init/Kconfig"
145
146source "kernel/Kconfig.freezer"
147
148menu "Processor type and features"
149
150config SMP
151 bool "Symmetric multi-processing support"
152 ---help---
153 This enables support for systems with more than one CPU. If you have
154 a system with only one CPU, say N. If you have a system with more
155 than one CPU, say Y.
156
157 If you say N here, the kernel will run on uni- and multiprocessor
158 machines, but will use only one CPU of a multiprocessor machine. If
159 you say Y here, the kernel will run on many, but not all,
160 uniprocessor machines. On a uniprocessor machine, the kernel
161 will run faster if you say N here.
162
163 People using multiprocessor machines who say Y here should also say
164 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
165 Management" code will be disabled if you say Y here.
166
167 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
168 available at <http://www.tldp.org/docs.html#howto>.
169
170 If you don't know what to do here, say N.
171
172config NR_CPUS
173 int "Maximum number of CPUs"
174 depends on SMP
175 range 2 32 if SPARC32
176 range 2 1024 if SPARC64
177 default 32 if SPARC32
178 default 64 if SPARC64
179
180source kernel/Kconfig.hz
181
182config RWSEM_GENERIC_SPINLOCK
183 bool
184 default y if SPARC32
185
186config RWSEM_XCHGADD_ALGORITHM
187 bool
188 default y if SPARC64
189
190config GENERIC_HWEIGHT
191 bool
192 default y
193
194config GENERIC_CALIBRATE_DELAY
195 bool
196 default y
197
198config ARCH_MAY_HAVE_PC_FDC
199 bool
200 default y
201
202config EMULATED_CMPXCHG
203 bool
204 default y if SPARC32
205 help
206 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
207 is emulated, and therefore it is not completely atomic.
208
209# Makefile helpers
210config SPARC32_SMP
211 bool
212 default y
213 depends on SPARC32 && SMP
214
215config SPARC64_SMP
216 bool
217 default y
218 depends on SPARC64 && SMP
219
220config EARLYFB
221 bool "Support for early boot text console"
222 default y
223 depends on SPARC64
224 help
225 Say Y here to enable a faster early framebuffer boot console.
226
227config SECCOMP
228 bool "Enable seccomp to safely compute untrusted bytecode"
229 depends on SPARC64 && PROC_FS
230 default y
231 help
232 This kernel feature is useful for number crunching applications
233 that may need to compute untrusted bytecode during their
234 execution. By using pipes or other transports made available to
235 the process as file descriptors supporting the read/write
236 syscalls, it's possible to isolate those applications in
237 their own address space using seccomp. Once seccomp is
238 enabled via /proc/<pid>/seccomp, it cannot be disabled
239 and the task is only allowed to execute a few safe syscalls
240 defined by each seccomp mode.
241
242 If unsure, say Y. Only embedded should say N here.
243
244config HOTPLUG_CPU
245 bool "Support for hot-pluggable CPUs"
246 depends on SPARC64 && SMP
247 help
248 Say Y here to experiment with turning CPUs off and on. CPUs
249 can be controlled through /sys/devices/system/cpu/cpu#.
250 Say N if you want to disable CPU hotplug.
251
252if SPARC64
253source "drivers/cpufreq/Kconfig"
254endif
255
256config US3_MC
257 tristate "UltraSPARC-III Memory Controller driver"
258 depends on SPARC64
259 default y
260 help
261 This adds a driver for the UltraSPARC-III memory controller.
262 Loading this driver allows exact mnemonic strings to be
263 printed in the event of a memory error, so that the faulty DIMM
264 on the motherboard can be matched to the error.
265
266 If in doubt, say Y, as this information can be very useful.
267
268# Global things across all Sun machines.
269config GENERIC_LOCKBREAK
270 bool
271 default y
272 depends on SPARC64 && SMP && PREEMPT
273
274config NUMA
275 bool "NUMA support"
276 depends on SPARC64 && SMP
277
278config NODES_SHIFT
279 int
280 default "4"
281 depends on NEED_MULTIPLE_NODES
282
283# Some NUMA nodes have memory ranges that span
284# other nodes. Even though a pfn is valid and
285# between a node's start and end pfns, it may not
286# reside on that node. See memmap_init_zone()
287# for details.
288config NODES_SPAN_OTHER_NODES
289 def_bool y
290 depends on NEED_MULTIPLE_NODES
291
292config ARCH_SELECT_MEMORY_MODEL
293 def_bool y if SPARC64
294
295config ARCH_SPARSEMEM_ENABLE
296 def_bool y if SPARC64
297 select SPARSEMEM_VMEMMAP_ENABLE
298
299config ARCH_SPARSEMEM_DEFAULT
300 def_bool y if SPARC64
301
302source "mm/Kconfig"
303
304if SPARC64
305source "kernel/power/Kconfig"
306endif
307
308config SCHED_SMT
309 bool "SMT (Hyperthreading) scheduler support"
310 depends on SPARC64 && SMP
311 default y
312 help
313 SMT scheduler support improves the CPU scheduler's decision making
314 when dealing with SPARC cpus at a cost of slightly increased overhead
315 in some places. If unsure say N here.
316
317config SCHED_MC
318 bool "Multi-core scheduler support"
319 depends on SPARC64 && SMP
320 default y
321 help
322 Multi-core scheduler support improves the CPU scheduler's decision
323 making when dealing with multi-core CPU chips at a cost of slightly
324 increased overhead in some places. If unsure say N here.
325
326source "kernel/Kconfig.preempt"
327
328config CMDLINE_BOOL
329 bool "Default bootloader kernel arguments"
330 depends on SPARC64
331
332config CMDLINE
333 string "Initial kernel command string"
334 depends on CMDLINE_BOOL
335 default "console=ttyS0,9600 root=/dev/sda1"
336 help
337 Say Y here if you want to be able to pass default arguments to
338 the kernel. This will be overridden by the bootloader, if you
339 use one (such as SILO). This is most useful if you want to boot
340 a kernel from TFTP, and want default options to be available
341 with having them passed on the command line.
342
343 NOTE: This option WILL override the PROM bootargs setting!
344
345config SUN_PM
346 bool
347 default y if SPARC32
348 help
349 Enable power management and CPU standby features on supported
350 SPARC platforms.
351
352config SPARC_LED
353 tristate "Sun4m LED driver"
354 depends on SPARC32
355 help
356 This driver toggles the front-panel LED on sun4m systems
357 in a user-specifiable manner. Its state can be probed
358 by reading /proc/led and its blinking mode can be changed
359 via writes to /proc/led
360
361config SERIAL_CONSOLE
362 bool
363 depends on SPARC32
364 default y
365 ---help---
366 If you say Y here, it will be possible to use a serial port as the
367 system console (the system console is the device which receives all
368 kernel messages and warnings and which allows logins in single user
369 mode). This could be useful if some terminal or printer is connected
370 to that serial port.
371
372 Even if you say Y here, the currently visible virtual console
373 (/dev/tty0) will still be used as the system console by default, but
374 you can alter that using a kernel command line option such as
375 "console=ttyS1". (Try "man bootparam" or see the documentation of
376 your boot loader (silo) about how to pass options to the kernel at
377 boot time.)
378
379 If you don't have a graphics card installed and you say Y here, the
380 kernel will automatically use the first serial line, /dev/ttyS0, as
381 system console.
382
383 If unsure, say N.
384
385config SPARC_LEON
386 bool "Sparc Leon processor family"
387 depends on SPARC32
388 select USB_EHCI_BIG_ENDIAN_MMIO
389 select USB_EHCI_BIG_ENDIAN_DESC
390 ---help---
391 If you say Y here if you are running on a SPARC-LEON processor.
392 The LEON processor is a synthesizable VHDL model of the
393 SPARC-v8 standard. LEON is part of the GRLIB collection of
394 IP cores that are distributed under GPL. GRLIB can be downloaded
395 from www.gaisler.com. You can download a sparc-linux cross-compilation
396 toolchain at www.gaisler.com.
397
398if SPARC_LEON
399menu "U-Boot options"
400
401config UBOOT_LOAD_ADDR
402 hex "uImage Load Address"
403 default 0x40004000
404 ---help---
405 U-Boot kernel load address, the address in physical address space
406 where u-boot will place the Linux kernel before booting it.
407 This address is normally the base address of main memory + 0x4000.
408
409config UBOOT_FLASH_ADDR
410 hex "uImage.o Load Address"
411 default 0x00080000
412 ---help---
413 Optional setting only affecting the uImage.o ELF-image used to
414 download the uImage file to the target using a ELF-loader other than
415 U-Boot. It may for example be used to download an uImage to FLASH with
416 the GRMON utility before even starting u-boot.
417
418config UBOOT_ENTRY_ADDR
419 hex "uImage Entry Address"
420 default 0xf0004000
421 ---help---
422 Do not change this unless you know what you're doing. This is
423 hardcoded by the SPARC32 and LEON port.
424
425 This is the virtual address u-boot jumps to when booting the Linux
426 Kernel.
427
428endmenu
429endif
430
431endmenu
432
433menu "Bus options (PCI etc.)"
434config SBUS
435 bool
436 default y
437
438config SBUSCHAR
439 bool
440 default y
441
442config SUN_LDOMS
443 bool "Sun Logical Domains support"
444 depends on SPARC64
445 help
446 Say Y here is you want to support virtual devices via
447 Logical Domains.
448
449config PCI
450 bool "Support for PCI and PS/2 keyboard/mouse"
451 help
452 Find out whether your system includes a PCI bus. PCI is the name of
453 a bus system, i.e. the way the CPU talks to the other stuff inside
454 your box. If you say Y here, the kernel will include drivers and
455 infrastructure code to support PCI bus devices.
456
457 CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
458 CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
459 All of these platforms are extremely obscure, so say N if unsure.
460
461config PCI_DOMAINS
462 def_bool PCI if SPARC64
463
464config PCI_SYSCALL
465 def_bool PCI
466
467config PCIC_PCI
468 bool
469 depends on PCI && SPARC32 && !SPARC_LEON
470 default y
471
472config LEON_PCI
473 bool
474 depends on PCI && SPARC_LEON
475 default y
476
477config SPARC_GRPCI1
478 bool "GRPCI Host Bridge Support"
479 depends on LEON_PCI
480 default y
481 help
482 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
483 PCI host controller is typically found in GRLIB SPARC32/LEON
484 systems. The driver has one property (all_pci_errors) controlled
485 from the bootloader that makes the GRPCI to generate interrupts
486 on detected PCI Parity and System errors.
487
488config SPARC_GRPCI2
489 bool "GRPCI2 Host Bridge Support"
490 depends on LEON_PCI
491 default y
492 help
493 Say Y here to include the GRPCI2 Host Bridge Driver.
494
495source "drivers/pci/Kconfig"
496
497source "drivers/pcmcia/Kconfig"
498
499config SUN_OPENPROMFS
500 tristate "Openprom tree appears in /proc/openprom"
501 help
502 If you say Y, the OpenPROM device tree will be available as a
503 virtual file system, which you can mount to /proc/openprom by "mount
504 -t openpromfs none /proc/openprom".
505
506 To compile the /proc/openprom support as a module, choose M here: the
507 module will be called openpromfs.
508
509 Only choose N if you know in advance that you will not need to modify
510 OpenPROM settings on the running system.
511
512# Makefile helpers
513config SPARC64_PCI
514 bool
515 default y
516 depends on SPARC64 && PCI
517
518config SPARC64_PCI_MSI
519 bool
520 default y
521 depends on SPARC64_PCI && PCI_MSI
522
523endmenu
524
525menu "Executable file formats"
526
527source "fs/Kconfig.binfmt"
528
529config COMPAT
530 bool
531 depends on SPARC64
532 default y
533 select COMPAT_BINFMT_ELF
534 select HAVE_UID16
535 select ARCH_WANT_OLD_COMPAT_IPC
536 select COMPAT_OLD_SIGACTION
537
538config SYSVIPC_COMPAT
539 bool
540 depends on COMPAT && SYSVIPC
541 default y
542
543config KEYS_COMPAT
544 def_bool y if COMPAT && KEYS
545
546endmenu
547
548source "net/Kconfig"
549
550source "drivers/Kconfig"
551
552source "drivers/sbus/char/Kconfig"
553
554source "fs/Kconfig"
555
556source "arch/sparc/Kconfig.debug"
557
558source "security/Kconfig"
559
560source "crypto/Kconfig"
561
562source "lib/Kconfig"