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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"
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"