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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 HAVE_EXIT_THREAD
24 select SYSCTL_EXCEPTION_TRACE
25 select RTC_CLASS
26 select RTC_DRV_M48T59
27 select RTC_SYSTOHC
28 select HAVE_DMA_API_DEBUG
29 select HAVE_ARCH_JUMP_LABEL if SPARC64
30 select GENERIC_IRQ_SHOW
31 select ARCH_WANT_IPC_PARSE_VERSION
32 select GENERIC_PCI_IOMAP
33 select HAVE_NMI_WATCHDOG if SPARC64
34 select HAVE_CBPF_JIT
35 select HAVE_DEBUG_BUGVERBOSE
36 select GENERIC_SMP_IDLE_THREAD
37 select GENERIC_CLOCKEVENTS
38 select GENERIC_STRNCPY_FROM_USER
39 select GENERIC_STRNLEN_USER
40 select MODULES_USE_ELF_RELA
41 select ODD_RT_SIGACTION
42 select OLD_SIGSUSPEND
43 select ARCH_HAS_SG_CHAIN
44 select CPU_NO_EFFICIENT_FFS
45 select HAVE_ARCH_HARDENED_USERCOPY
46 select PROVE_LOCKING_SMALL if PROVE_LOCKING
47
48config SPARC32
49 def_bool !64BIT
50 select GENERIC_ATOMIC64
51 select CLZ_TAB
52 select HAVE_UID16
53 select OLD_SIGACTION
54
55config SPARC64
56 def_bool 64BIT
57 select HAVE_FUNCTION_TRACER
58 select HAVE_FUNCTION_GRAPH_TRACER
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 SPARSE_IRQ
71 select RTC_DRV_CMOS
72 select RTC_DRV_BQ4802
73 select RTC_DRV_SUN4V
74 select RTC_DRV_STARFIRE
75 select HAVE_PERF_EVENTS
76 select PERF_USE_VMALLOC
77 select IRQ_PREFLOW_FASTEOI
78 select ARCH_HAVE_NMI_SAFE_CMPXCHG
79 select HAVE_C_RECORDMCOUNT
80 select NO_BOOTMEM
81 select HAVE_ARCH_AUDITSYSCALL
82 select ARCH_SUPPORTS_ATOMIC_RMW
83 select HAVE_NMI
84
85config ARCH_DEFCONFIG
86 string
87 default "arch/sparc/configs/sparc32_defconfig" if SPARC32
88 default "arch/sparc/configs/sparc64_defconfig" if SPARC64
89
90config ARCH_PROC_KCORE_TEXT
91 def_bool y
92
93config ARCH_ATU
94 bool
95 default y if SPARC64
96
97config ARCH_DMA_ADDR_T_64BIT
98 bool
99 default y if ARCH_ATU
100
101config IOMMU_HELPER
102 bool
103 default y if SPARC64
104
105config STACKTRACE_SUPPORT
106 bool
107 default y if SPARC64
108
109config LOCKDEP_SUPPORT
110 bool
111 default y if SPARC64
112
113config ARCH_HIBERNATION_POSSIBLE
114 def_bool y if SPARC64
115
116config AUDIT_ARCH
117 bool
118 default y
119
120config HAVE_SETUP_PER_CPU_AREA
121 def_bool y if SPARC64
122
123config NEED_PER_CPU_EMBED_FIRST_CHUNK
124 def_bool y if SPARC64
125
126config NEED_PER_CPU_PAGE_FIRST_CHUNK
127 def_bool y if SPARC64
128
129config MMU
130 bool
131 default y
132
133config HIGHMEM
134 bool
135 default y if SPARC32
136
137config ZONE_DMA
138 bool
139 default y if SPARC32
140
141config NEED_DMA_MAP_STATE
142 def_bool y
143
144config NEED_SG_DMA_LENGTH
145 def_bool y
146
147config GENERIC_ISA_DMA
148 bool
149 default y if SPARC32
150
151config ARCH_SUPPORTS_DEBUG_PAGEALLOC
152 def_bool y if SPARC64
153
154config PGTABLE_LEVELS
155 default 4 if 64BIT
156 default 3
157
158config ARCH_SUPPORTS_UPROBES
159 def_bool y if SPARC64
160
161source "init/Kconfig"
162
163source "kernel/Kconfig.freezer"
164
165menu "Processor type and features"
166
167config SMP
168 bool "Symmetric multi-processing support"
169 ---help---
170 This enables support for systems with more than one CPU. If you have
171 a system with only one CPU, say N. If you have a system with more
172 than one CPU, say Y.
173
174 If you say N here, the kernel will run on uni- and multiprocessor
175 machines, but will use only one CPU of a multiprocessor machine. If
176 you say Y here, the kernel will run on many, but not all,
177 uniprocessor machines. On a uniprocessor machine, the kernel
178 will run faster if you say N here.
179
180 People using multiprocessor machines who say Y here should also say
181 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
182 Management" code will be disabled if you say Y here.
183
184 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
185 available at <http://www.tldp.org/docs.html#howto>.
186
187 If you don't know what to do here, say N.
188
189config NR_CPUS
190 int "Maximum number of CPUs"
191 depends on SMP
192 range 2 32 if SPARC32
193 range 2 1024 if SPARC64
194 default 32 if SPARC32
195 default 64 if SPARC64
196
197source kernel/Kconfig.hz
198
199config RWSEM_GENERIC_SPINLOCK
200 bool
201 default y if SPARC32
202
203config RWSEM_XCHGADD_ALGORITHM
204 bool
205 default y if SPARC64
206
207config GENERIC_HWEIGHT
208 bool
209 default y
210
211config GENERIC_CALIBRATE_DELAY
212 bool
213 default y
214
215config ARCH_MAY_HAVE_PC_FDC
216 bool
217 default y
218
219config EMULATED_CMPXCHG
220 bool
221 default y if SPARC32
222 help
223 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
224 is emulated, and therefore it is not completely atomic.
225
226# Makefile helpers
227config SPARC32_SMP
228 bool
229 default y
230 depends on SPARC32 && SMP
231
232config SPARC64_SMP
233 bool
234 default y
235 depends on SPARC64 && SMP
236
237config EARLYFB
238 bool "Support for early boot text console"
239 default y
240 depends on SPARC64
241 help
242 Say Y here to enable a faster early framebuffer boot console.
243
244config SECCOMP
245 bool "Enable seccomp to safely compute untrusted bytecode"
246 depends on SPARC64 && PROC_FS
247 default y
248 help
249 This kernel feature is useful for number crunching applications
250 that may need to compute untrusted bytecode during their
251 execution. By using pipes or other transports made available to
252 the process as file descriptors supporting the read/write
253 syscalls, it's possible to isolate those applications in
254 their own address space using seccomp. Once seccomp is
255 enabled via /proc/<pid>/seccomp, it cannot be disabled
256 and the task is only allowed to execute a few safe syscalls
257 defined by each seccomp mode.
258
259 If unsure, say Y. Only embedded should say N here.
260
261config HOTPLUG_CPU
262 bool "Support for hot-pluggable CPUs"
263 depends on SPARC64 && SMP
264 help
265 Say Y here to experiment with turning CPUs off and on. CPUs
266 can be controlled through /sys/devices/system/cpu/cpu#.
267 Say N if you want to disable CPU hotplug.
268
269if SPARC64
270source "drivers/cpufreq/Kconfig"
271endif
272
273config US3_MC
274 tristate "UltraSPARC-III Memory Controller driver"
275 depends on SPARC64
276 default y
277 help
278 This adds a driver for the UltraSPARC-III memory controller.
279 Loading this driver allows exact mnemonic strings to be
280 printed in the event of a memory error, so that the faulty DIMM
281 on the motherboard can be matched to the error.
282
283 If in doubt, say Y, as this information can be very useful.
284
285# Global things across all Sun machines.
286config GENERIC_LOCKBREAK
287 bool
288 default y
289 depends on SPARC64 && SMP && PREEMPT
290
291config NUMA
292 bool "NUMA support"
293 depends on SPARC64 && SMP
294
295config NODES_SHIFT
296 int
297 default "4"
298 depends on NEED_MULTIPLE_NODES
299
300# Some NUMA nodes have memory ranges that span
301# other nodes. Even though a pfn is valid and
302# between a node's start and end pfns, it may not
303# reside on that node. See memmap_init_zone()
304# for details.
305config NODES_SPAN_OTHER_NODES
306 def_bool y
307 depends on NEED_MULTIPLE_NODES
308
309config ARCH_SELECT_MEMORY_MODEL
310 def_bool y if SPARC64
311
312config ARCH_SPARSEMEM_ENABLE
313 def_bool y if SPARC64
314 select SPARSEMEM_VMEMMAP_ENABLE
315
316config ARCH_SPARSEMEM_DEFAULT
317 def_bool y if SPARC64
318
319config FORCE_MAX_ZONEORDER
320 int "Maximum zone order"
321 default "13"
322 help
323 The kernel memory allocator divides physically contiguous memory
324 blocks into "zones", where each zone is a power of two number of
325 pages. This option selects the largest power of two that the kernel
326 keeps in the memory allocator. If you need to allocate very large
327 blocks of physically contiguous memory, then you may need to
328 increase this value.
329
330 This config option is actually maximum order plus one. For example,
331 a value of 13 means that the largest free memory block is 2^12 pages.
332
333source "mm/Kconfig"
334
335if SPARC64
336source "kernel/power/Kconfig"
337endif
338
339config SCHED_SMT
340 bool "SMT (Hyperthreading) scheduler support"
341 depends on SPARC64 && SMP
342 default y
343 help
344 SMT scheduler support improves the CPU scheduler's decision making
345 when dealing with SPARC cpus at a cost of slightly increased overhead
346 in some places. If unsure say N here.
347
348config SCHED_MC
349 bool "Multi-core scheduler support"
350 depends on SPARC64 && SMP
351 default y
352 help
353 Multi-core scheduler support improves the CPU scheduler's decision
354 making when dealing with multi-core CPU chips at a cost of slightly
355 increased overhead in some places. If unsure say N here.
356
357source "kernel/Kconfig.preempt"
358
359config CMDLINE_BOOL
360 bool "Default bootloader kernel arguments"
361 depends on SPARC64
362
363config CMDLINE
364 string "Initial kernel command string"
365 depends on CMDLINE_BOOL
366 default "console=ttyS0,9600 root=/dev/sda1"
367 help
368 Say Y here if you want to be able to pass default arguments to
369 the kernel. This will be overridden by the bootloader, if you
370 use one (such as SILO). This is most useful if you want to boot
371 a kernel from TFTP, and want default options to be available
372 with having them passed on the command line.
373
374 NOTE: This option WILL override the PROM bootargs setting!
375
376config SUN_PM
377 bool
378 default y if SPARC32
379 help
380 Enable power management and CPU standby features on supported
381 SPARC platforms.
382
383config SPARC_LED
384 tristate "Sun4m LED driver"
385 depends on SPARC32
386 help
387 This driver toggles the front-panel LED on sun4m systems
388 in a user-specifiable manner. Its state can be probed
389 by reading /proc/led and its blinking mode can be changed
390 via writes to /proc/led
391
392config SERIAL_CONSOLE
393 bool
394 depends on SPARC32
395 default y
396 ---help---
397 If you say Y here, it will be possible to use a serial port as the
398 system console (the system console is the device which receives all
399 kernel messages and warnings and which allows logins in single user
400 mode). This could be useful if some terminal or printer is connected
401 to that serial port.
402
403 Even if you say Y here, the currently visible virtual console
404 (/dev/tty0) will still be used as the system console by default, but
405 you can alter that using a kernel command line option such as
406 "console=ttyS1". (Try "man bootparam" or see the documentation of
407 your boot loader (silo) about how to pass options to the kernel at
408 boot time.)
409
410 If you don't have a graphics card installed and you say Y here, the
411 kernel will automatically use the first serial line, /dev/ttyS0, as
412 system console.
413
414 If unsure, say N.
415
416config SPARC_LEON
417 bool "Sparc Leon processor family"
418 depends on SPARC32
419 select USB_EHCI_BIG_ENDIAN_MMIO
420 select USB_EHCI_BIG_ENDIAN_DESC
421 ---help---
422 If you say Y here if you are running on a SPARC-LEON processor.
423 The LEON processor is a synthesizable VHDL model of the
424 SPARC-v8 standard. LEON is part of the GRLIB collection of
425 IP cores that are distributed under GPL. GRLIB can be downloaded
426 from www.gaisler.com. You can download a sparc-linux cross-compilation
427 toolchain at www.gaisler.com.
428
429if SPARC_LEON
430menu "U-Boot options"
431
432config UBOOT_LOAD_ADDR
433 hex "uImage Load Address"
434 default 0x40004000
435 ---help---
436 U-Boot kernel load address, the address in physical address space
437 where u-boot will place the Linux kernel before booting it.
438 This address is normally the base address of main memory + 0x4000.
439
440config UBOOT_FLASH_ADDR
441 hex "uImage.o Load Address"
442 default 0x00080000
443 ---help---
444 Optional setting only affecting the uImage.o ELF-image used to
445 download the uImage file to the target using a ELF-loader other than
446 U-Boot. It may for example be used to download an uImage to FLASH with
447 the GRMON utility before even starting u-boot.
448
449config UBOOT_ENTRY_ADDR
450 hex "uImage Entry Address"
451 default 0xf0004000
452 ---help---
453 Do not change this unless you know what you're doing. This is
454 hardcoded by the SPARC32 and LEON port.
455
456 This is the virtual address u-boot jumps to when booting the Linux
457 Kernel.
458
459endmenu
460endif
461
462endmenu
463
464menu "Bus options (PCI etc.)"
465config SBUS
466 bool
467 default y
468
469config SBUSCHAR
470 bool
471 default y
472
473config SUN_LDOMS
474 bool "Sun Logical Domains support"
475 depends on SPARC64
476 help
477 Say Y here is you want to support virtual devices via
478 Logical Domains.
479
480config PCI
481 bool "Support for PCI and PS/2 keyboard/mouse"
482 help
483 Find out whether your system includes a PCI bus. PCI is the name of
484 a bus system, i.e. the way the CPU talks to the other stuff inside
485 your box. If you say Y here, the kernel will include drivers and
486 infrastructure code to support PCI bus devices.
487
488 CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
489 CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
490 All of these platforms are extremely obscure, so say N if unsure.
491
492config PCI_DOMAINS
493 def_bool PCI if SPARC64
494
495config PCI_SYSCALL
496 def_bool PCI
497
498config PCIC_PCI
499 bool
500 depends on PCI && SPARC32 && !SPARC_LEON
501 default y
502
503config LEON_PCI
504 bool
505 depends on PCI && SPARC_LEON
506 default y
507
508config SPARC_GRPCI1
509 bool "GRPCI Host Bridge Support"
510 depends on LEON_PCI
511 default y
512 help
513 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
514 PCI host controller is typically found in GRLIB SPARC32/LEON
515 systems. The driver has one property (all_pci_errors) controlled
516 from the bootloader that makes the GRPCI to generate interrupts
517 on detected PCI Parity and System errors.
518
519config SPARC_GRPCI2
520 bool "GRPCI2 Host Bridge Support"
521 depends on LEON_PCI
522 default y
523 help
524 Say Y here to include the GRPCI2 Host Bridge Driver.
525
526source "drivers/pci/Kconfig"
527
528source "drivers/pcmcia/Kconfig"
529
530config SUN_OPENPROMFS
531 tristate "Openprom tree appears in /proc/openprom"
532 help
533 If you say Y, the OpenPROM device tree will be available as a
534 virtual file system, which you can mount to /proc/openprom by "mount
535 -t openpromfs none /proc/openprom".
536
537 To compile the /proc/openprom support as a module, choose M here: the
538 module will be called openpromfs.
539
540 Only choose N if you know in advance that you will not need to modify
541 OpenPROM settings on the running system.
542
543# Makefile helpers
544config SPARC64_PCI
545 bool
546 default y
547 depends on SPARC64 && PCI
548
549config SPARC64_PCI_MSI
550 bool
551 default y
552 depends on SPARC64_PCI && PCI_MSI
553
554endmenu
555
556menu "Executable file formats"
557
558source "fs/Kconfig.binfmt"
559
560config COMPAT
561 bool
562 depends on SPARC64
563 default y
564 select COMPAT_BINFMT_ELF
565 select HAVE_UID16
566 select ARCH_WANT_OLD_COMPAT_IPC
567 select COMPAT_OLD_SIGACTION
568
569config SYSVIPC_COMPAT
570 bool
571 depends on COMPAT && SYSVIPC
572 default y
573
574config KEYS_COMPAT
575 def_bool y if COMPAT && KEYS
576
577endmenu
578
579source "net/Kconfig"
580
581source "drivers/Kconfig"
582
583source "drivers/sbus/char/Kconfig"
584
585source "fs/Kconfig"
586
587source "arch/sparc/Kconfig.debug"
588
589source "security/Kconfig"
590
591source "crypto/Kconfig"
592
593source "lib/Kconfig"