1 # SPDX-License-Identifier: GPL-2.0-only !! 1 config 64BIT
2 # !! 2 bool "64-bit kernel" if "$(ARCH)" = "sparc"
3 # Copyright (C) 2004, 2007-2010, 2011-2012 Syn !! 3 default "$(ARCH)" = "sparc64"
4 # !! 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.
5 8
6 config ARC !! 9 Say yes to build a 64-bit kernel - formerly known as sparc64
7 def_bool y !! 10 Say no to build a 32-bit kernel - formerly known as sparc
8 select ARC_TIMERS !! 11
9 select ARCH_HAS_CACHE_LINE_SIZE !! 12 config SPARC
10 select ARCH_HAS_DEBUG_VM_PGTABLE !! 13 bool
11 select ARCH_HAS_DMA_PREP_COHERENT !! 14 default y
12 select ARCH_HAS_PTE_SPECIAL !! 15 select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI
13 select ARCH_HAS_SETUP_DMA_OPS !! 16 select ARCH_MIGHT_HAVE_PC_SERIO
14 select ARCH_HAS_SYNC_DMA_FOR_CPU !! 17 select OF
15 select ARCH_HAS_SYNC_DMA_FOR_DEVICE !! 18 select OF_PROMTREE
16 select ARCH_NEED_CMPXCHG_1_EMU !! 19 select HAVE_IDE
17 select ARCH_SUPPORTS_ATOMIC_RMW if ARC !! 20 select HAVE_OPROFILE
18 select ARCH_32BIT_OFF_T !! 21 select HAVE_ARCH_KGDB if !SMP || SPARC64
19 select BUILDTIME_TABLE_SORT !! 22 select HAVE_ARCH_TRACEHOOK
20 select CLONE_BACKWARDS !! 23 select HAVE_EXIT_THREAD
21 select COMMON_CLK !! 24 select SYSCTL_EXCEPTION_TRACE
22 select DMA_DIRECT_REMAP !! 25 select RTC_CLASS
23 select GENERIC_ATOMIC64 if !ISA_ARCV2 !! 26 select RTC_DRV_M48T59
24 # for now, we don't need GENERIC_IRQ_P !! 27 select RTC_SYSTOHC
>> 28 select HAVE_ARCH_JUMP_LABEL if SPARC64
25 select GENERIC_IRQ_SHOW 29 select GENERIC_IRQ_SHOW
>> 30 select ARCH_WANT_IPC_PARSE_VERSION
26 select GENERIC_PCI_IOMAP 31 select GENERIC_PCI_IOMAP
27 select GENERIC_PENDING_IRQ if SMP !! 32 select HAVE_NMI_WATCHDOG if SPARC64
28 select GENERIC_SCHED_CLOCK !! 33 select HAVE_CBPF_JIT if SPARC32
>> 34 select HAVE_EBPF_JIT if SPARC64
>> 35 select HAVE_DEBUG_BUGVERBOSE
29 select GENERIC_SMP_IDLE_THREAD 36 select GENERIC_SMP_IDLE_THREAD
30 select GENERIC_IOREMAP !! 37 select GENERIC_CLOCKEVENTS
31 select GENERIC_STRNCPY_FROM_USER if MM !! 38 select GENERIC_STRNCPY_FROM_USER
32 select GENERIC_STRNLEN_USER if MMU !! 39 select GENERIC_STRNLEN_USER
33 select HAVE_ARCH_KGDB !! 40 select MODULES_USE_ELF_RELA
34 select HAVE_ARCH_TRACEHOOK !! 41 select ODD_RT_SIGACTION
35 select HAVE_ARCH_TRANSPARENT_HUGEPAGE !! 42 select OLD_SIGSUSPEND
36 select HAVE_DEBUG_STACKOVERFLOW !! 43 select ARCH_HAS_SG_CHAIN
37 select HAVE_DEBUG_KMEMLEAK !! 44 select CPU_NO_EFFICIENT_FFS
38 select HAVE_IOREMAP_PROT !! 45 select LOCKDEP_SMALL if LOCKDEP
39 select HAVE_KERNEL_GZIP !! 46 select NEED_DMA_MAP_STATE
40 select HAVE_KERNEL_LZMA !! 47 select NEED_SG_DMA_LENGTH
41 select HAVE_KPROBES !! 48
>> 49 config SPARC32
>> 50 def_bool !64BIT
>> 51 select GENERIC_ATOMIC64
>> 52 select CLZ_TAB
>> 53 select HAVE_UID16
>> 54 select OLD_SIGACTION
>> 55
>> 56 config SPARC64
>> 57 def_bool 64BIT
>> 58 select HAVE_FUNCTION_TRACER
>> 59 select HAVE_FUNCTION_GRAPH_TRACER
42 select HAVE_KRETPROBES 60 select HAVE_KRETPROBES
43 select HAVE_REGS_AND_STACK_ACCESS_API !! 61 select HAVE_KPROBES
44 select HAVE_MOD_ARCH_SPECIFIC !! 62 select HAVE_RCU_TABLE_FREE if SMP
45 select HAVE_PERF_EVENTS !! 63 select HAVE_MEMBLOCK
>> 64 select HAVE_MEMBLOCK_NODE_MAP
>> 65 select HAVE_ARCH_TRANSPARENT_HUGEPAGE
>> 66 select HAVE_DYNAMIC_FTRACE
>> 67 select HAVE_FTRACE_MCOUNT_RECORD
46 select HAVE_SYSCALL_TRACEPOINTS 68 select HAVE_SYSCALL_TRACEPOINTS
47 select IRQ_DOMAIN !! 69 select HAVE_CONTEXT_TRACKING
48 select LOCK_MM_AND_FIND_VMA !! 70 select HAVE_DEBUG_KMEMLEAK
49 select MODULES_USE_ELF_RELA !! 71 select IOMMU_HELPER
50 select OF !! 72 select SPARSE_IRQ
51 select OF_EARLY_FLATTREE !! 73 select RTC_DRV_CMOS
52 select PCI_SYSCALL if PCI !! 74 select RTC_DRV_BQ4802
53 select HAVE_ARCH_JUMP_LABEL if ISA_ARC !! 75 select RTC_DRV_SUN4V
54 select TRACE_IRQFLAGS_SUPPORT !! 76 select RTC_DRV_STARFIRE
55 select HAVE_EBPF_JIT if ISA_ARCV2 !! 77 select HAVE_PERF_EVENTS
>> 78 select PERF_USE_VMALLOC
>> 79 select IRQ_PREFLOW_FASTEOI
>> 80 select ARCH_HAVE_NMI_SAFE_CMPXCHG
>> 81 select HAVE_C_RECORDMCOUNT
>> 82 select NO_BOOTMEM
>> 83 select HAVE_ARCH_AUDITSYSCALL
>> 84 select ARCH_SUPPORTS_ATOMIC_RMW
>> 85 select HAVE_NMI
>> 86 select HAVE_REGS_AND_STACK_ACCESS_API
>> 87 select ARCH_USE_QUEUED_RWLOCKS
>> 88 select ARCH_USE_QUEUED_SPINLOCKS
>> 89 select GENERIC_TIME_VSYSCALL
>> 90 select ARCH_CLOCKSOURCE_DATA
>> 91 select ARCH_HAS_PTE_SPECIAL
56 92
57 config LOCKDEP_SUPPORT !! 93 config ARCH_DEFCONFIG
58 def_bool y !! 94 string
>> 95 default "arch/sparc/configs/sparc32_defconfig" if SPARC32
>> 96 default "arch/sparc/configs/sparc64_defconfig" if SPARC64
59 97
60 config SCHED_OMIT_FRAME_POINTER !! 98 config ARCH_PROC_KCORE_TEXT
61 def_bool y 99 def_bool y
62 100
63 config GENERIC_CSUM !! 101 config CPU_BIG_ENDIAN
64 def_bool y 102 def_bool y
65 103
66 config ARCH_FLATMEM_ENABLE !! 104 config ARCH_ATU
67 def_bool y !! 105 bool
>> 106 default y if SPARC64
68 107
69 config MMU !! 108 config STACKTRACE_SUPPORT
70 def_bool y !! 109 bool
>> 110 default y if SPARC64
71 111
72 config NO_IOPORT_MAP !! 112 config LOCKDEP_SUPPORT
73 def_bool y !! 113 bool
>> 114 default y if SPARC64
74 115
75 config GENERIC_CALIBRATE_DELAY !! 116 config ARCH_HIBERNATION_POSSIBLE
76 def_bool y !! 117 def_bool y if SPARC64
77 118
78 config GENERIC_HWEIGHT !! 119 config AUDIT_ARCH
79 def_bool y !! 120 bool
>> 121 default y
80 122
81 config STACKTRACE_SUPPORT !! 123 config HAVE_SETUP_PER_CPU_AREA
82 def_bool y !! 124 def_bool y if SPARC64
83 select STACKTRACE <<
84 125
85 menu "ARC Architecture Configuration" !! 126 config NEED_PER_CPU_EMBED_FIRST_CHUNK
>> 127 def_bool y if SPARC64
86 128
87 menu "ARC Platform/SoC/Board" !! 129 config NEED_PER_CPU_PAGE_FIRST_CHUNK
>> 130 def_bool y if SPARC64
88 131
89 source "arch/arc/plat-tb10x/Kconfig" !! 132 config MMU
90 source "arch/arc/plat-axs10x/Kconfig" !! 133 bool
91 source "arch/arc/plat-hsdk/Kconfig" !! 134 default y
92 135
93 endmenu !! 136 config HIGHMEM
>> 137 bool
>> 138 default y if SPARC32
94 139
95 choice !! 140 config ZONE_DMA
96 prompt "ARC Instruction Set" !! 141 bool
97 default ISA_ARCV2 !! 142 default y if SPARC32
>> 143
>> 144 config GENERIC_ISA_DMA
>> 145 bool
>> 146 default y if SPARC32
98 147
99 config ISA_ARCOMPACT !! 148 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
100 bool "ARCompact ISA" !! 149 def_bool y if SPARC64
101 select CPU_NO_EFFICIENT_FFS <<
102 help <<
103 The original ARC ISA of ARC600/700 c <<
104 150
105 config ISA_ARCV2 !! 151 config PGTABLE_LEVELS
106 bool "ARC ISA v2" !! 152 default 4 if 64BIT
107 select ARC_TIMERS_64BIT !! 153 default 3
108 help <<
109 ISA for the Next Generation ARC-HS c <<
110 <<
111 endchoice <<
112 <<
113 menu "ARC CPU Configuration" <<
114 <<
115 choice <<
116 prompt "ARC Core" <<
117 default ARC_CPU_770 if ISA_ARCOMPACT <<
118 default ARC_CPU_HS if ISA_ARCV2 <<
119 <<
120 config ARC_CPU_770 <<
121 bool "ARC770" <<
122 depends on ISA_ARCOMPACT <<
123 select ARC_HAS_SWAPE <<
124 help <<
125 Support for ARC770 core introduced w <<
126 This core has a bunch of cool new fe <<
127 -MMU-v3: Variable Page Sz (4k, 8k, 1 <<
128 Shared Address Spaces (for <<
129 -Caches: New Prog Model, Region Flus <<
130 -Insns: endian swap, load-locked/sto <<
131 <<
132 config ARC_CPU_HS <<
133 bool "ARC-HS" <<
134 depends on ISA_ARCV2 <<
135 help <<
136 Support for ARC HS38x Cores based on <<
137 The notable features are: <<
138 - SMP configurations of up to 4 co <<
139 - Optional L2 Cache and IO-Coheren <<
140 - Revised Interrupt Architecture ( <<
141 auto stack switch, auto regfil <<
142 - MMUv4 (PIPT dcache, Huge Pages) <<
143 - Instructions for <<
144 * 64bit load/store: LDD, STD <<
145 * Hardware assisted divide/rem <<
146 * Function prologue/epilogue: <<
147 * IRQ enable/disable: CLRI, SE <<
148 * pop count: FFS, FLS <<
149 * SETcc, BMSKN, XBFU... <<
150 <<
151 endchoice <<
152 <<
153 config ARC_TUNE_MCPU <<
154 string "Override default -mcpu compile <<
155 default "" <<
156 help <<
157 Override default -mcpu=xxx compiler <<
158 the ISA version) with the specified <<
159 NOTE: If specified flag isn't suppor <<
160 ISA default value will be used as a <<
161 154
162 config CPU_BIG_ENDIAN !! 155 config ARCH_SUPPORTS_UPROBES
163 bool "Enable Big Endian Mode" !! 156 def_bool y if SPARC64
164 help <<
165 Build kernel for Big Endian Mode of <<
166 157
167 config SMP !! 158 source "init/Kconfig"
168 bool "Symmetric Multi-Processing" <<
169 select ARC_MCIP if ISA_ARCV2 <<
170 help <<
171 This enables support for systems wit <<
172 159
173 if SMP !! 160 source "kernel/Kconfig.freezer"
174 161
175 config NR_CPUS !! 162 menu "Processor type and features"
176 int "Maximum number of CPUs (2-4096)" <<
177 range 2 4096 <<
178 default "4" <<
179 163
180 config ARC_SMP_HALT_ON_RESET !! 164 config SMP
181 bool "Enable Halt-on-reset boot mode" !! 165 bool "Symmetric multi-processing support"
182 help !! 166 ---help---
183 In SMP configuration cores can be co !! 167 This enables support for systems with more than one CPU. If you have
184 or they could all start at same time !! 168 a system with only one CPU, say N. If you have a system with more
185 masters are parked until Master kick !! 169 than one CPU, say Y.
186 at designated entry point. For other !! 170
187 entry point and spin wait for Master !! 171 If you say N here, the kernel will run on uni- and multiprocessor
>> 172 machines, but will use only one CPU of a multiprocessor machine. If
>> 173 you say Y here, the kernel will run on many, but not all,
>> 174 uniprocessor machines. On a uniprocessor machine, the kernel
>> 175 will run faster if you say N here.
>> 176
>> 177 People using multiprocessor machines who say Y here should also say
>> 178 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
>> 179 Management" code will be disabled if you say Y here.
188 180
189 endif #SMP !! 181 See also <file:Documentation/lockup-watchdogs.txt> and the SMP-HOWTO
>> 182 available at <http://www.tldp.org/docs.html#howto>.
190 183
191 config ARC_MCIP !! 184 If you don't know what to do here, say N.
192 bool "ARConnect Multicore IP (MCIP) Su !! 185
193 depends on ISA_ARCV2 !! 186 config NR_CPUS
194 default y if SMP !! 187 int "Maximum number of CPUs"
195 help !! 188 depends on SMP
196 This IP block enables SMP in ARC-HS3 !! 189 range 2 32 if SPARC32
197 It provides for cross-core interrupt !! 190 range 2 4096 if SPARC64
198 hardware semaphores, shared memory,. !! 191 default 32 if SPARC32
>> 192 default 4096 if SPARC64
>> 193
>> 194 source kernel/Kconfig.hz
>> 195
>> 196 config RWSEM_GENERIC_SPINLOCK
>> 197 bool
>> 198 default y if SPARC32
>> 199
>> 200 config RWSEM_XCHGADD_ALGORITHM
>> 201 bool
>> 202 default y if SPARC64
199 203
200 menuconfig ARC_CACHE !! 204 config GENERIC_HWEIGHT
201 bool "Enable Cache Support" !! 205 bool
202 default y 206 default y
203 207
204 if ARC_CACHE !! 208 config GENERIC_CALIBRATE_DELAY
>> 209 bool
>> 210 default y
205 211
206 config ARC_CACHE_LINE_SHIFT !! 212 config ARCH_MAY_HAVE_PC_FDC
207 int "Cache Line Length (as power of 2) !! 213 bool
208 range 5 7 !! 214 default y
209 default "6" !! 215
>> 216 config EMULATED_CMPXCHG
>> 217 bool
>> 218 default y if SPARC32
210 help 219 help
211 Starting with ARC700 4.9, Cache line !! 220 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
212 This option specifies "N", with Line !! 221 is emulated, and therefore it is not completely atomic.
213 So line lengths of 32, 64, 128 are s <<
214 Linux only supports same line length <<
215 222
216 config ARC_HAS_ICACHE !! 223 # Makefile helpers
217 bool "Use Instruction Cache" !! 224 config SPARC32_SMP
>> 225 bool
218 default y 226 default y
>> 227 depends on SPARC32 && SMP
219 228
220 config ARC_HAS_DCACHE !! 229 config SPARC64_SMP
221 bool "Use Data Cache" !! 230 bool
222 default y 231 default y
>> 232 depends on SPARC64 && SMP
223 233
224 config ARC_CACHE_PAGES !! 234 config EARLYFB
225 bool "Per Page Cache Control" !! 235 bool "Support for early boot text console"
226 default y 236 default y
227 depends on ARC_HAS_ICACHE || ARC_HAS_D !! 237 depends on SPARC64
228 help 238 help
229 This can be used to over-ride the gl !! 239 Say Y here to enable a faster early framebuffer boot console.
230 per-page basis (but only for pages a <<
231 Kernel Virtual address or User Virtu <<
232 TLB entries have a per-page Cache En <<
233 Note that Global I/D ENABLE + Per Pa <<
234 Global DISABLE + Per Page ENABLE won <<
235 <<
236 endif #ARC_CACHE <<
237 240
238 config ARC_HAS_ICCM !! 241 config SECCOMP
239 bool "Use ICCM" !! 242 bool "Enable seccomp to safely compute untrusted bytecode"
>> 243 depends on SPARC64 && PROC_FS
>> 244 default y
240 help 245 help
241 Single Cycle RAMS to store Fast Path !! 246 This kernel feature is useful for number crunching applications
>> 247 that may need to compute untrusted bytecode during their
>> 248 execution. By using pipes or other transports made available to
>> 249 the process as file descriptors supporting the read/write
>> 250 syscalls, it's possible to isolate those applications in
>> 251 their own address space using seccomp. Once seccomp is
>> 252 enabled via /proc/<pid>/seccomp, it cannot be disabled
>> 253 and the task is only allowed to execute a few safe syscalls
>> 254 defined by each seccomp mode.
242 255
243 config ARC_ICCM_SZ !! 256 If unsure, say Y. Only embedded should say N here.
244 int "ICCM Size in KB" <<
245 default "64" <<
246 depends on ARC_HAS_ICCM <<
247 257
248 config ARC_HAS_DCCM !! 258 config HOTPLUG_CPU
249 bool "Use DCCM" !! 259 bool "Support for hot-pluggable CPUs"
>> 260 depends on SPARC64 && SMP
250 help 261 help
251 Single Cycle RAMS to store Fast Path !! 262 Say Y here to experiment with turning CPUs off and on. CPUs
252 !! 263 can be controlled through /sys/devices/system/cpu/cpu#.
253 config ARC_DCCM_SZ !! 264 Say N if you want to disable CPU hotplug.
254 int "DCCM Size in KB" <<
255 default "64" <<
256 depends on ARC_HAS_DCCM <<
257 <<
258 config ARC_DCCM_BASE <<
259 hex "DCCM map address" <<
260 default "0xA0000000" <<
261 depends on ARC_HAS_DCCM <<
262 <<
263 choice <<
264 prompt "MMU Version" <<
265 default ARC_MMU_V3 if ISA_ARCOMPACT <<
266 default ARC_MMU_V4 if ISA_ARCV2 <<
267 265
268 config ARC_MMU_V3 !! 266 if SPARC64
269 bool "MMU v3" !! 267 source "drivers/cpufreq/Kconfig"
270 depends on ISA_ARCOMPACT !! 268 endif
271 help <<
272 Introduced with ARC700 4.10: New Fea <<
273 Variable Page size (1k-16k), var JTL <<
274 Shared Address Spaces (SASID) <<
275 269
276 config ARC_MMU_V4 !! 270 config US3_MC
277 bool "MMU v4" !! 271 tristate "UltraSPARC-III Memory Controller driver"
278 depends on ISA_ARCV2 !! 272 depends on SPARC64
>> 273 default y
>> 274 help
>> 275 This adds a driver for the UltraSPARC-III memory controller.
>> 276 Loading this driver allows exact mnemonic strings to be
>> 277 printed in the event of a memory error, so that the faulty DIMM
>> 278 on the motherboard can be matched to the error.
>> 279
>> 280 If in doubt, say Y, as this information can be very useful.
>> 281
>> 282 # Global things across all Sun machines.
>> 283 config GENERIC_LOCKBREAK
>> 284 bool
>> 285 default y
>> 286 depends on SPARC64 && SMP && PREEMPT
>> 287
>> 288 config NUMA
>> 289 bool "NUMA support"
>> 290 depends on SPARC64 && SMP
>> 291
>> 292 config NODES_SHIFT
>> 293 int "Maximum NUMA Nodes (as a power of 2)"
>> 294 range 4 5 if SPARC64
>> 295 default "5"
>> 296 depends on NEED_MULTIPLE_NODES
>> 297 help
>> 298 Specify the maximum number of NUMA Nodes available on the target
>> 299 system. Increases memory reserved to accommodate various tables.
>> 300
>> 301 # Some NUMA nodes have memory ranges that span
>> 302 # other nodes. Even though a pfn is valid and
>> 303 # between a node's start and end pfns, it may not
>> 304 # reside on that node. See memmap_init_zone()
>> 305 # for details.
>> 306 config NODES_SPAN_OTHER_NODES
>> 307 def_bool y
>> 308 depends on NEED_MULTIPLE_NODES
279 309
280 endchoice !! 310 config ARCH_SELECT_MEMORY_MODEL
>> 311 def_bool y if SPARC64
281 312
>> 313 config ARCH_SPARSEMEM_ENABLE
>> 314 def_bool y if SPARC64
>> 315 select SPARSEMEM_VMEMMAP_ENABLE
282 316
283 choice !! 317 config ARCH_SPARSEMEM_DEFAULT
284 prompt "MMU Page Size" !! 318 def_bool y if SPARC64
285 default ARC_PAGE_SIZE_8K <<
286 319
287 config ARC_PAGE_SIZE_8K !! 320 config FORCE_MAX_ZONEORDER
288 bool "8KB" !! 321 int "Maximum zone order"
289 select HAVE_PAGE_SIZE_8KB !! 322 default "13"
290 help 323 help
291 Choose between 8k vs 16k !! 324 The kernel memory allocator divides physically contiguous memory
>> 325 blocks into "zones", where each zone is a power of two number of
>> 326 pages. This option selects the largest power of two that the kernel
>> 327 keeps in the memory allocator. If you need to allocate very large
>> 328 blocks of physically contiguous memory, then you may need to
>> 329 increase this value.
292 330
293 config ARC_PAGE_SIZE_16K !! 331 This config option is actually maximum order plus one. For example,
294 select HAVE_PAGE_SIZE_16KB !! 332 a value of 13 means that the largest free memory block is 2^12 pages.
295 bool "16KB" <<
296 333
297 config ARC_PAGE_SIZE_4K !! 334 source "mm/Kconfig"
298 bool "4KB" <<
299 select HAVE_PAGE_SIZE_4KB <<
300 depends on ARC_MMU_V3 || ARC_MMU_V4 <<
301 335
302 endchoice !! 336 if SPARC64
303 !! 337 source "kernel/power/Kconfig"
304 choice !! 338 endif
305 prompt "MMU Super Page Size" <<
306 depends on ISA_ARCV2 && TRANSPARENT_HU <<
307 default ARC_HUGEPAGE_2M <<
308 <<
309 config ARC_HUGEPAGE_2M <<
310 bool "2MB" <<
311 <<
312 config ARC_HUGEPAGE_16M <<
313 bool "16MB" <<
314 <<
315 endchoice <<
316 <<
317 config PGTABLE_LEVELS <<
318 int "Number of Page table levels" <<
319 default 2 <<
320 339
321 config ARC_COMPACT_IRQ_LEVELS !! 340 config SCHED_SMT
322 depends on ISA_ARCOMPACT !! 341 bool "SMT (Hyperthreading) scheduler support"
323 bool "Setup Timer IRQ as high Priority !! 342 depends on SPARC64 && SMP
324 # if SMP, LV2 enabled ONLY if ARC impl !! 343 default y
325 depends on !SMP !! 344 help
>> 345 SMT scheduler support improves the CPU scheduler's decision making
>> 346 when dealing with SPARC cpus at a cost of slightly increased overhead
>> 347 in some places. If unsure say N here.
>> 348
>> 349 config SCHED_MC
>> 350 bool "Multi-core scheduler support"
>> 351 depends on SPARC64 && SMP
>> 352 default y
>> 353 help
>> 354 Multi-core scheduler support improves the CPU scheduler's decision
>> 355 making when dealing with multi-core CPU chips at a cost of slightly
>> 356 increased overhead in some places. If unsure say N here.
>> 357
>> 358 source "kernel/Kconfig.preempt"
>> 359
>> 360 config CMDLINE_BOOL
>> 361 bool "Default bootloader kernel arguments"
>> 362 depends on SPARC64
>> 363
>> 364 config CMDLINE
>> 365 string "Initial kernel command string"
>> 366 depends on CMDLINE_BOOL
>> 367 default "console=ttyS0,9600 root=/dev/sda1"
>> 368 help
>> 369 Say Y here if you want to be able to pass default arguments to
>> 370 the kernel. This will be overridden by the bootloader, if you
>> 371 use one (such as SILO). This is most useful if you want to boot
>> 372 a kernel from TFTP, and want default options to be available
>> 373 with having them passed on the command line.
>> 374
>> 375 NOTE: This option WILL override the PROM bootargs setting!
>> 376
>> 377 config SUN_PM
>> 378 bool
>> 379 default y if SPARC32
>> 380 help
>> 381 Enable power management and CPU standby features on supported
>> 382 SPARC platforms.
>> 383
>> 384 config SPARC_LED
>> 385 tristate "Sun4m LED driver"
>> 386 depends on SPARC32
>> 387 help
>> 388 This driver toggles the front-panel LED on sun4m systems
>> 389 in a user-specifiable manner. Its state can be probed
>> 390 by reading /proc/led and its blinking mode can be changed
>> 391 via writes to /proc/led
>> 392
>> 393 config SERIAL_CONSOLE
>> 394 bool
>> 395 depends on SPARC32
>> 396 default y
>> 397 ---help---
>> 398 If you say Y here, it will be possible to use a serial port as the
>> 399 system console (the system console is the device which receives all
>> 400 kernel messages and warnings and which allows logins in single user
>> 401 mode). This could be useful if some terminal or printer is connected
>> 402 to that serial port.
>> 403
>> 404 Even if you say Y here, the currently visible virtual console
>> 405 (/dev/tty0) will still be used as the system console by default, but
>> 406 you can alter that using a kernel command line option such as
>> 407 "console=ttyS1". (Try "man bootparam" or see the documentation of
>> 408 your boot loader (silo) about how to pass options to the kernel at
>> 409 boot time.)
>> 410
>> 411 If you don't have a graphics card installed and you say Y here, the
>> 412 kernel will automatically use the first serial line, /dev/ttyS0, as
>> 413 system console.
>> 414
>> 415 If unsure, say N.
>> 416
>> 417 config SPARC_LEON
>> 418 bool "Sparc Leon processor family"
>> 419 depends on SPARC32
>> 420 select USB_EHCI_BIG_ENDIAN_MMIO
>> 421 select USB_EHCI_BIG_ENDIAN_DESC
>> 422 select USB_UHCI_BIG_ENDIAN_MMIO
>> 423 select USB_UHCI_BIG_ENDIAN_DESC
>> 424 ---help---
>> 425 If you say Y here if you are running on a SPARC-LEON processor.
>> 426 The LEON processor is a synthesizable VHDL model of the
>> 427 SPARC-v8 standard. LEON is part of the GRLIB collection of
>> 428 IP cores that are distributed under GPL. GRLIB can be downloaded
>> 429 from www.gaisler.com. You can download a sparc-linux cross-compilation
>> 430 toolchain at www.gaisler.com.
>> 431
>> 432 if SPARC_LEON
>> 433 menu "U-Boot options"
>> 434
>> 435 config UBOOT_LOAD_ADDR
>> 436 hex "uImage Load Address"
>> 437 default 0x40004000
>> 438 ---help---
>> 439 U-Boot kernel load address, the address in physical address space
>> 440 where u-boot will place the Linux kernel before booting it.
>> 441 This address is normally the base address of main memory + 0x4000.
>> 442
>> 443 config UBOOT_FLASH_ADDR
>> 444 hex "uImage.o Load Address"
>> 445 default 0x00080000
>> 446 ---help---
>> 447 Optional setting only affecting the uImage.o ELF-image used to
>> 448 download the uImage file to the target using a ELF-loader other than
>> 449 U-Boot. It may for example be used to download an uImage to FLASH with
>> 450 the GRMON utility before even starting u-boot.
>> 451
>> 452 config UBOOT_ENTRY_ADDR
>> 453 hex "uImage Entry Address"
>> 454 default 0xf0004000
>> 455 ---help---
>> 456 Do not change this unless you know what you're doing. This is
>> 457 hardcoded by the SPARC32 and LEON port.
326 458
327 config ARC_FPU_SAVE_RESTORE !! 459 This is the virtual address u-boot jumps to when booting the Linux
328 bool "Enable FPU state persistence acr !! 460 Kernel.
329 help <<
330 ARCompact FPU has internal registers <<
331 Floating Point operations. There are <<
332 for floating point exceptions and ro <<
333 preserved across task context switch <<
334 461
335 config ARC_CANT_LLSC !! 462 endmenu
336 def_bool n !! 463 endif
337 464
338 config ARC_HAS_LLSC !! 465 endmenu
339 bool "Insn: LLOCK/SCOND (efficient ato <<
340 default y <<
341 depends on !ARC_CANT_LLSC <<
342 466
343 config ARC_HAS_SWAPE !! 467 menu "Bus options (PCI etc.)"
344 bool "Insn: SWAPE (endian-swap)" !! 468 config SBUS
>> 469 bool
345 default y 470 default y
346 471
347 if ISA_ARCV2 !! 472 config SBUSCHAR
348 !! 473 bool
349 config ARC_USE_UNALIGNED_MEM_ACCESS <<
350 bool "Enable unaligned access in HW" <<
351 default y 474 default y
352 select HAVE_EFFICIENT_UNALIGNED_ACCESS <<
353 help <<
354 The ARC HS architecture supports una <<
355 which is disabled by default. Enable <<
356 hardware and use software to use it <<
357 475
358 config ARC_HAS_LL64 !! 476 config SUN_LDOMS
359 bool "Insn: 64bit LDD/STD" !! 477 bool "Sun Logical Domains support"
>> 478 depends on SPARC64
360 help 479 help
361 Enable gcc to generate 64-bit load/s !! 480 Say Y here is you want to support virtual devices via
362 ISA mandates even/odd registers to a !! 481 Logical Domains.
363 dest operands with 2 possible source <<
364 default y <<
365 <<
366 config ARC_HAS_DIV_REM <<
367 bool "Insn: div, divu, rem, remu" <<
368 default y <<
369 482
370 config ARC_HAS_ACCL_REGS !! 483 config PCI
371 bool "Reg Pair ACCL:ACCH (FPU and/or M !! 484 bool "Support for PCI and PS/2 keyboard/mouse"
372 default y <<
373 help 485 help
374 Depending on the configuration, CPU !! 486 Find out whether your system includes a PCI bus. PCI is the name of
375 (also referred to as r58:r59). These !! 487 a bus system, i.e. the way the CPU talks to the other stuff inside
376 kernel needs to save/restore per pro !! 488 your box. If you say Y here, the kernel will include drivers and
>> 489 infrastructure code to support PCI bus devices.
377 490
378 config ARC_DSP_HANDLED !! 491 CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
379 def_bool n !! 492 CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
>> 493 All of these platforms are extremely obscure, so say N if unsure.
380 494
381 config ARC_DSP_SAVE_RESTORE_REGS !! 495 config PCI_DOMAINS
382 def_bool n !! 496 def_bool PCI if SPARC64
383 497
384 choice !! 498 config PCI_SYSCALL
385 prompt "DSP support" !! 499 def_bool PCI
386 default ARC_DSP_NONE <<
387 help <<
388 Depending on the configuration, CPU <<
389 (ACC0_GLO, ACC0_GHI, DSP_BFLY0, DSP_ <<
390 Below are options describing how to <<
391 interrupt entry / exit and in contex <<
392 <<
393 config ARC_DSP_NONE <<
394 bool "No DSP extension presence in HW" <<
395 help <<
396 No DSP extension presence in HW <<
397 500
398 config ARC_DSP_KERNEL !! 501 config PCIC_PCI
399 bool "DSP extension in HW, no support !! 502 bool
400 select ARC_HAS_ACCL_REGS !! 503 depends on PCI && SPARC32 && !SPARC_LEON
401 select ARC_DSP_HANDLED !! 504 default y
402 help <<
403 DSP extension presence in HW, no sup <<
404 applications. We don't save / restor <<
405 some minimal preparations so userspa <<
406 <<
407 config ARC_DSP_USERSPACE <<
408 bool "Support DSP for userspace apps" <<
409 select ARC_HAS_ACCL_REGS <<
410 select ARC_DSP_HANDLED <<
411 select ARC_DSP_SAVE_RESTORE_REGS <<
412 help <<
413 DSP extension presence in HW, suppor <<
414 run DSP-enabled userspace applicatio <<
415 505
416 config ARC_DSP_AGU_USERSPACE !! 506 config LEON_PCI
417 bool "Support DSP with AGU for userspa !! 507 bool
418 select ARC_HAS_ACCL_REGS !! 508 depends on PCI && SPARC_LEON
419 select ARC_DSP_HANDLED !! 509 default y
420 select ARC_DSP_SAVE_RESTORE_REGS <<
421 help <<
422 DSP and AGU extensions presence in H <<
423 and AGU registers to run DSP-enabled <<
424 endchoice <<
425 510
426 config ARC_IRQ_NO_AUTOSAVE !! 511 config SPARC_GRPCI1
427 bool "Disable hardware autosave regfil !! 512 bool "GRPCI Host Bridge Support"
428 default n !! 513 depends on LEON_PCI
>> 514 default y
429 help 515 help
430 On HS cores, taken interrupt auto sa !! 516 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
431 This is programmable and can be opti !! 517 PCI host controller is typically found in GRLIB SPARC32/LEON
432 software INTERRUPT_PROLOGUE/EPILGUE !! 518 systems. The driver has one property (all_pci_errors) controlled
>> 519 from the bootloader that makes the GRPCI to generate interrupts
>> 520 on detected PCI Parity and System errors.
433 521
434 config ARC_LPB_DISABLE !! 522 config SPARC_GRPCI2
435 bool "Disable loop buffer (LPB)" !! 523 bool "GRPCI2 Host Bridge Support"
>> 524 depends on LEON_PCI
>> 525 default y
436 help 526 help
437 On HS cores, loop buffer (LPB) is pr !! 527 Say Y here to include the GRPCI2 Host Bridge Driver.
438 be optionally disabled. <<
439 528
440 endif # ISA_ARCV2 !! 529 source "drivers/pci/Kconfig"
441 530
442 endmenu # "ARC CPU Configuration" !! 531 source "drivers/pcmcia/Kconfig"
443 532
444 config LINUX_LINK_BASE !! 533 config SUN_OPENPROMFS
445 hex "Kernel link address" !! 534 tristate "Openprom tree appears in /proc/openprom"
446 default "0x80000000" <<
447 help 535 help
448 ARC700 divides the 32 bit phy addres !! 536 If you say Y, the OpenPROM device tree will be available as a
449 -Lower 2G (0 - 0x7FFF_FFFF ) is user !! 537 virtual file system, which you can mount to /proc/openprom by "mount
450 -Upper 2G (0x8000_0000 onwards) is u !! 538 -t openpromfs none /proc/openprom".
451 Typically Linux kernel is linked at <<
452 hence the default value of 0x8zs. <<
453 However some customers have peripher <<
454 Linux needs to be scooted a bit. <<
455 If you don't know what the above mea <<
456 This needs to match memory start add <<
457 539
458 config LINUX_RAM_BASE !! 540 To compile the /proc/openprom support as a module, choose M here: the
459 hex "RAM base address" !! 541 module will be called openpromfs.
460 default LINUX_LINK_BASE <<
461 help <<
462 By default Linux is linked at base o <<
463 cases (such as HSDK), Linux can't be <<
464 this option. <<
465 <<
466 config HIGHMEM <<
467 bool "High Memory Support" <<
468 select HAVE_ARCH_PFN_VALID <<
469 select KMAP_LOCAL <<
470 help <<
471 With ARC 2G:2G address split, only u <<
472 kernel. Enable this to potentially a <<
473 in future <<
474 542
475 config ARC_HAS_PAE40 !! 543 Only choose N if you know in advance that you will not need to modify
476 bool "Support for the 40-bit Physical !! 544 OpenPROM settings on the running system.
477 depends on ISA_ARCV2 <<
478 select HIGHMEM <<
479 select PHYS_ADDR_T_64BIT <<
480 help <<
481 Enable access to physical memory bey <<
482 ARC cores with 40 bit Physical Addre <<
483 <<
484 config ARC_KVADDR_SIZE <<
485 int "Kernel Virtual Address Space size <<
486 range 0 512 <<
487 default "256" <<
488 help <<
489 The kernel address space is carved o <<
490 space for catering to vmalloc, modul <<
491 not suffice vmalloc requirements of <<
492 this to be stretched to 512 MB (by e <<
493 kernel-user gutter) <<
494 545
495 config ARC_CURR_IN_REG !! 546 # Makefile helpers
496 bool "cache current task pointer in gp !! 547 config SPARC64_PCI
>> 548 bool
497 default y 549 default y
498 help !! 550 depends on SPARC64 && PCI
499 This reserves gp register to point t <<
500 kernel mode eliding memory access fo <<
501 551
>> 552 config SPARC64_PCI_MSI
>> 553 bool
>> 554 default y
>> 555 depends on SPARC64_PCI && PCI_MSI
502 556
503 config ARC_EMUL_UNALIGNED !! 557 endmenu
504 bool "Emulate unaligned memory access <<
505 select SYSCTL_ARCH_UNALIGN_NO_WARN <<
506 select SYSCTL_ARCH_UNALIGN_ALLOW <<
507 depends on ISA_ARCOMPACT <<
508 help <<
509 This enables misaligned 16 & 32 bit <<
510 Use ONLY-IF-ABS-NECESSARY as it will <<
511 potential bugs in code <<
512 558
513 config HZ !! 559 menu "Executable file formats"
514 int "Timer Frequency" <<
515 default 100 <<
516 560
517 config ARC_METAWARE_HLINK !! 561 source "fs/Kconfig.binfmt"
518 bool "Support for Metaware debugger as <<
519 help <<
520 This options allows a Linux userland <<
521 host file system (open/creat/read/wr <<
522 Metaware Debugger. This can come in <<
523 when there is no real usable periphe <<
524 562
525 menuconfig ARC_DBG !! 563 config COMPAT
526 bool "ARC debugging" !! 564 bool
>> 565 depends on SPARC64
>> 566 default y
>> 567 select COMPAT_BINFMT_ELF
>> 568 select HAVE_UID16
>> 569 select ARCH_WANT_OLD_COMPAT_IPC
>> 570 select COMPAT_OLD_SIGACTION
>> 571
>> 572 config SYSVIPC_COMPAT
>> 573 bool
>> 574 depends on COMPAT && SYSVIPC
527 default y 575 default y
528 576
529 if ARC_DBG !! 577 endmenu
530 578
531 config ARC_DW2_UNWIND !! 579 source "net/Kconfig"
532 bool "Enable DWARF specific kernel sta <<
533 default y <<
534 select KALLSYMS <<
535 help <<
536 Compiles the kernel with DWARF unwin <<
537 to get stack backtraces. <<
538 580
539 If you say Y here the resulting kern !! 581 source "drivers/Kconfig"
540 but not slower, and it will give ver <<
541 If you don't debug the kernel, you c <<
542 to solve problems without frame unwi <<
543 582
544 config ARC_DBG_JUMP_LABEL !! 583 source "drivers/sbus/char/Kconfig"
545 bool "Paranoid checks in Static Keys ( <<
546 depends on JUMP_LABEL <<
547 default y if STATIC_KEYS_SELFTEST <<
548 help <<
549 Enable paranoid checks and self-test <<
550 part of static keys (jump labels) re <<
551 endif <<
552 584
553 config ARC_BUILTIN_DTB_NAME !! 585 source "fs/Kconfig"
554 string "Built in DTB" <<
555 help <<
556 Set the name of the DTB to embed in <<
557 Leaving it blank selects the "nsim_7 <<
558 586
559 endmenu # "ARC Architecture Configuration" !! 587 source "arch/sparc/Kconfig.debug"
560 588
561 config ARCH_FORCE_MAX_ORDER !! 589 source "security/Kconfig"
562 int "Maximum zone order" <<
563 default "11" if ARC_HUGEPAGE_16M <<
564 default "10" <<
565 590
566 source "kernel/power/Kconfig" !! 591 source "crypto/Kconfig"
>> 592
>> 593 source "lib/Kconfig"
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