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_DMA_API_DEBUG
>> 29 select HAVE_ARCH_JUMP_LABEL if SPARC64
25 select GENERIC_IRQ_SHOW 30 select GENERIC_IRQ_SHOW
>> 31 select ARCH_WANT_IPC_PARSE_VERSION
26 select GENERIC_PCI_IOMAP 32 select GENERIC_PCI_IOMAP
27 select GENERIC_PENDING_IRQ if SMP !! 33 select HAVE_NMI_WATCHDOG if SPARC64
28 select GENERIC_SCHED_CLOCK !! 34 select HAVE_CBPF_JIT if SPARC32
>> 35 select HAVE_EBPF_JIT if SPARC64
>> 36 select HAVE_DEBUG_BUGVERBOSE
29 select GENERIC_SMP_IDLE_THREAD 37 select GENERIC_SMP_IDLE_THREAD
30 select GENERIC_IOREMAP !! 38 select GENERIC_CLOCKEVENTS
31 select GENERIC_STRNCPY_FROM_USER if MM !! 39 select GENERIC_STRNCPY_FROM_USER
32 select GENERIC_STRNLEN_USER if MMU !! 40 select GENERIC_STRNLEN_USER
33 select HAVE_ARCH_KGDB !! 41 select MODULES_USE_ELF_RELA
34 select HAVE_ARCH_TRACEHOOK !! 42 select ODD_RT_SIGACTION
35 select HAVE_ARCH_TRANSPARENT_HUGEPAGE !! 43 select OLD_SIGSUSPEND
36 select HAVE_DEBUG_STACKOVERFLOW !! 44 select ARCH_HAS_SG_CHAIN
37 select HAVE_DEBUG_KMEMLEAK !! 45 select CPU_NO_EFFICIENT_FFS
38 select HAVE_IOREMAP_PROT !! 46 select LOCKDEP_SMALL if LOCKDEP
39 select HAVE_KERNEL_GZIP !! 47
40 select HAVE_KERNEL_LZMA !! 48 config SPARC32
41 select HAVE_KPROBES !! 49 def_bool !64BIT
>> 50 select GENERIC_ATOMIC64
>> 51 select CLZ_TAB
>> 52 select HAVE_UID16
>> 53 select OLD_SIGACTION
>> 54
>> 55 config SPARC64
>> 56 def_bool 64BIT
>> 57 select HAVE_FUNCTION_TRACER
>> 58 select HAVE_FUNCTION_GRAPH_TRACER
42 select HAVE_KRETPROBES 59 select HAVE_KRETPROBES
43 select HAVE_REGS_AND_STACK_ACCESS_API !! 60 select HAVE_KPROBES
44 select HAVE_MOD_ARCH_SPECIFIC !! 61 select HAVE_RCU_TABLE_FREE if SMP
45 select HAVE_PERF_EVENTS !! 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
46 select HAVE_SYSCALL_TRACEPOINTS 67 select HAVE_SYSCALL_TRACEPOINTS
47 select IRQ_DOMAIN !! 68 select HAVE_CONTEXT_TRACKING
48 select LOCK_MM_AND_FIND_VMA !! 69 select HAVE_DEBUG_KMEMLEAK
49 select MODULES_USE_ELF_RELA !! 70 select SPARSE_IRQ
50 select OF !! 71 select RTC_DRV_CMOS
51 select OF_EARLY_FLATTREE !! 72 select RTC_DRV_BQ4802
52 select PCI_SYSCALL if PCI !! 73 select RTC_DRV_SUN4V
53 select HAVE_ARCH_JUMP_LABEL if ISA_ARC !! 74 select RTC_DRV_STARFIRE
54 select TRACE_IRQFLAGS_SUPPORT !! 75 select HAVE_PERF_EVENTS
55 select HAVE_EBPF_JIT if ISA_ARCV2 !! 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 select HAVE_REGS_AND_STACK_ACCESS_API
>> 85 select ARCH_USE_QUEUED_RWLOCKS
>> 86 select ARCH_USE_QUEUED_SPINLOCKS
>> 87 select GENERIC_TIME_VSYSCALL
>> 88 select ARCH_CLOCKSOURCE_DATA
>> 89
>> 90 config ARCH_DEFCONFIG
>> 91 string
>> 92 default "arch/sparc/configs/sparc32_defconfig" if SPARC32
>> 93 default "arch/sparc/configs/sparc64_defconfig" if SPARC64
56 94
57 config LOCKDEP_SUPPORT !! 95 config ARCH_PROC_KCORE_TEXT
58 def_bool y 96 def_bool y
59 97
60 config SCHED_OMIT_FRAME_POINTER !! 98 config CPU_BIG_ENDIAN
61 def_bool y 99 def_bool y
62 100
63 config GENERIC_CSUM !! 101 config ARCH_ATU
64 def_bool y !! 102 bool
>> 103 default y if SPARC64
>> 104
>> 105 config ARCH_DMA_ADDR_T_64BIT
>> 106 bool
>> 107 default y if ARCH_ATU
>> 108
>> 109 config IOMMU_HELPER
>> 110 bool
>> 111 default y if SPARC64
65 112
66 config ARCH_FLATMEM_ENABLE !! 113 config STACKTRACE_SUPPORT
67 def_bool y !! 114 bool
>> 115 default y if SPARC64
>> 116
>> 117 config LOCKDEP_SUPPORT
>> 118 bool
>> 119 default y if SPARC64
>> 120
>> 121 config ARCH_HIBERNATION_POSSIBLE
>> 122 def_bool y if SPARC64
>> 123
>> 124 config AUDIT_ARCH
>> 125 bool
>> 126 default y
>> 127
>> 128 config HAVE_SETUP_PER_CPU_AREA
>> 129 def_bool y if SPARC64
>> 130
>> 131 config NEED_PER_CPU_EMBED_FIRST_CHUNK
>> 132 def_bool y if SPARC64
>> 133
>> 134 config NEED_PER_CPU_PAGE_FIRST_CHUNK
>> 135 def_bool y if SPARC64
68 136
69 config MMU 137 config MMU
70 def_bool y !! 138 bool
>> 139 default y
71 140
72 config NO_IOPORT_MAP !! 141 config HIGHMEM
73 def_bool y !! 142 bool
>> 143 default y if SPARC32
74 144
75 config GENERIC_CALIBRATE_DELAY !! 145 config ZONE_DMA
76 def_bool y !! 146 bool
>> 147 default y if SPARC32
77 148
78 config GENERIC_HWEIGHT !! 149 config NEED_DMA_MAP_STATE
79 def_bool y 150 def_bool y
80 151
81 config STACKTRACE_SUPPORT !! 152 config NEED_SG_DMA_LENGTH
82 def_bool y 153 def_bool y
83 select STACKTRACE <<
84 154
85 menu "ARC Architecture Configuration" !! 155 config GENERIC_ISA_DMA
>> 156 bool
>> 157 default y if SPARC32
86 158
87 menu "ARC Platform/SoC/Board" !! 159 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
>> 160 def_bool y if SPARC64
88 161
89 source "arch/arc/plat-tb10x/Kconfig" !! 162 config PGTABLE_LEVELS
90 source "arch/arc/plat-axs10x/Kconfig" !! 163 default 4 if 64BIT
91 source "arch/arc/plat-hsdk/Kconfig" !! 164 default 3
92 165
93 endmenu !! 166 config ARCH_SUPPORTS_UPROBES
>> 167 def_bool y if SPARC64
94 168
95 choice !! 169 source "init/Kconfig"
96 prompt "ARC Instruction Set" <<
97 default ISA_ARCV2 <<
98 170
99 config ISA_ARCOMPACT !! 171 source "kernel/Kconfig.freezer"
100 bool "ARCompact ISA" <<
101 select CPU_NO_EFFICIENT_FFS <<
102 help <<
103 The original ARC ISA of ARC600/700 c <<
104 172
105 config ISA_ARCV2 !! 173 menu "Processor type and features"
106 bool "ARC ISA v2" <<
107 select ARC_TIMERS_64BIT <<
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 <<
162 config CPU_BIG_ENDIAN <<
163 bool "Enable Big Endian Mode" <<
164 help <<
165 Build kernel for Big Endian Mode of <<
166 174
167 config SMP 175 config SMP
168 bool "Symmetric Multi-Processing" !! 176 bool "Symmetric multi-processing support"
169 select ARC_MCIP if ISA_ARCV2 !! 177 ---help---
170 help !! 178 This enables support for systems with more than one CPU. If you have
171 This enables support for systems wit !! 179 a system with only one CPU, say N. If you have a system with more
>> 180 than one CPU, say Y.
>> 181
>> 182 If you say N here, the kernel will run on uni- and multiprocessor
>> 183 machines, but will use only one CPU of a multiprocessor machine. If
>> 184 you say Y here, the kernel will run on many, but not all,
>> 185 uniprocessor machines. On a uniprocessor machine, the kernel
>> 186 will run faster if you say N here.
>> 187
>> 188 People using multiprocessor machines who say Y here should also say
>> 189 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
>> 190 Management" code will be disabled if you say Y here.
172 191
173 if SMP !! 192 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
>> 193 available at <http://www.tldp.org/docs.html#howto>.
174 194
175 config NR_CPUS !! 195 If you don't know what to do here, say N.
176 int "Maximum number of CPUs (2-4096)" <<
177 range 2 4096 <<
178 default "4" <<
179 196
180 config ARC_SMP_HALT_ON_RESET !! 197 config NR_CPUS
181 bool "Enable Halt-on-reset boot mode" !! 198 int "Maximum number of CPUs"
182 help !! 199 depends on SMP
183 In SMP configuration cores can be co !! 200 range 2 32 if SPARC32
184 or they could all start at same time !! 201 range 2 4096 if SPARC64
185 masters are parked until Master kick !! 202 default 32 if SPARC32
186 at designated entry point. For other !! 203 default 4096 if SPARC64
187 entry point and spin wait for Master !! 204
188 !! 205 source kernel/Kconfig.hz
189 endif #SMP !! 206
>> 207 config RWSEM_GENERIC_SPINLOCK
>> 208 bool
>> 209 default y if SPARC32
>> 210
>> 211 config RWSEM_XCHGADD_ALGORITHM
>> 212 bool
>> 213 default y if SPARC64
190 214
191 config ARC_MCIP !! 215 config GENERIC_HWEIGHT
192 bool "ARConnect Multicore IP (MCIP) Su !! 216 bool
193 depends on ISA_ARCV2 !! 217 default y
194 default y if SMP <<
195 help <<
196 This IP block enables SMP in ARC-HS3 <<
197 It provides for cross-core interrupt <<
198 hardware semaphores, shared memory,. <<
199 218
200 menuconfig ARC_CACHE !! 219 config GENERIC_CALIBRATE_DELAY
201 bool "Enable Cache Support" !! 220 bool
202 default y 221 default y
203 222
204 if ARC_CACHE !! 223 config ARCH_MAY_HAVE_PC_FDC
>> 224 bool
>> 225 default y
205 226
206 config ARC_CACHE_LINE_SHIFT !! 227 config EMULATED_CMPXCHG
207 int "Cache Line Length (as power of 2) !! 228 bool
208 range 5 7 !! 229 default y if SPARC32
209 default "6" <<
210 help 230 help
211 Starting with ARC700 4.9, Cache line !! 231 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
212 This option specifies "N", with Line !! 232 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 <<
215 233
216 config ARC_HAS_ICACHE !! 234 # Makefile helpers
217 bool "Use Instruction Cache" !! 235 config SPARC32_SMP
>> 236 bool
218 default y 237 default y
>> 238 depends on SPARC32 && SMP
219 239
220 config ARC_HAS_DCACHE !! 240 config SPARC64_SMP
221 bool "Use Data Cache" !! 241 bool
222 default y 242 default y
>> 243 depends on SPARC64 && SMP
223 244
224 config ARC_CACHE_PAGES !! 245 config EARLYFB
225 bool "Per Page Cache Control" !! 246 bool "Support for early boot text console"
226 default y 247 default y
227 depends on ARC_HAS_ICACHE || ARC_HAS_D !! 248 depends on SPARC64
228 help 249 help
229 This can be used to over-ride the gl !! 250 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 <<
237 251
238 config ARC_HAS_ICCM !! 252 config SECCOMP
239 bool "Use ICCM" !! 253 bool "Enable seccomp to safely compute untrusted bytecode"
>> 254 depends on SPARC64 && PROC_FS
>> 255 default y
240 help 256 help
241 Single Cycle RAMS to store Fast Path !! 257 This kernel feature is useful for number crunching applications
>> 258 that may need to compute untrusted bytecode during their
>> 259 execution. By using pipes or other transports made available to
>> 260 the process as file descriptors supporting the read/write
>> 261 syscalls, it's possible to isolate those applications in
>> 262 their own address space using seccomp. Once seccomp is
>> 263 enabled via /proc/<pid>/seccomp, it cannot be disabled
>> 264 and the task is only allowed to execute a few safe syscalls
>> 265 defined by each seccomp mode.
242 266
243 config ARC_ICCM_SZ !! 267 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 <<
247 268
248 config ARC_HAS_DCCM !! 269 config HOTPLUG_CPU
249 bool "Use DCCM" !! 270 bool "Support for hot-pluggable CPUs"
>> 271 depends on SPARC64 && SMP
250 help 272 help
251 Single Cycle RAMS to store Fast Path !! 273 Say Y here to experiment with turning CPUs off and on. CPUs
>> 274 can be controlled through /sys/devices/system/cpu/cpu#.
>> 275 Say N if you want to disable CPU hotplug.
252 276
253 config ARC_DCCM_SZ !! 277 if SPARC64
254 int "DCCM Size in KB" !! 278 source "drivers/cpufreq/Kconfig"
255 default "64" !! 279 endif
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 <<
268 config ARC_MMU_V3 <<
269 bool "MMU v3" <<
270 depends on ISA_ARCOMPACT <<
271 help <<
272 Introduced with ARC700 4.10: New Fea <<
273 Variable Page size (1k-16k), var JTL <<
274 Shared Address Spaces (SASID) <<
275 280
276 config ARC_MMU_V4 !! 281 config US3_MC
277 bool "MMU v4" !! 282 tristate "UltraSPARC-III Memory Controller driver"
278 depends on ISA_ARCV2 !! 283 depends on SPARC64
>> 284 default y
>> 285 help
>> 286 This adds a driver for the UltraSPARC-III memory controller.
>> 287 Loading this driver allows exact mnemonic strings to be
>> 288 printed in the event of a memory error, so that the faulty DIMM
>> 289 on the motherboard can be matched to the error.
>> 290
>> 291 If in doubt, say Y, as this information can be very useful.
>> 292
>> 293 # Global things across all Sun machines.
>> 294 config GENERIC_LOCKBREAK
>> 295 bool
>> 296 default y
>> 297 depends on SPARC64 && SMP && PREEMPT
>> 298
>> 299 config NUMA
>> 300 bool "NUMA support"
>> 301 depends on SPARC64 && SMP
>> 302
>> 303 config NODES_SHIFT
>> 304 int "Maximum NUMA Nodes (as a power of 2)"
>> 305 range 4 5 if SPARC64
>> 306 default "5"
>> 307 depends on NEED_MULTIPLE_NODES
>> 308 help
>> 309 Specify the maximum number of NUMA Nodes available on the target
>> 310 system. Increases memory reserved to accommodate various tables.
>> 311
>> 312 # Some NUMA nodes have memory ranges that span
>> 313 # other nodes. Even though a pfn is valid and
>> 314 # between a node's start and end pfns, it may not
>> 315 # reside on that node. See memmap_init_zone()
>> 316 # for details.
>> 317 config NODES_SPAN_OTHER_NODES
>> 318 def_bool y
>> 319 depends on NEED_MULTIPLE_NODES
279 320
280 endchoice !! 321 config ARCH_SELECT_MEMORY_MODEL
>> 322 def_bool y if SPARC64
281 323
>> 324 config ARCH_SPARSEMEM_ENABLE
>> 325 def_bool y if SPARC64
>> 326 select SPARSEMEM_VMEMMAP_ENABLE
282 327
283 choice !! 328 config ARCH_SPARSEMEM_DEFAULT
284 prompt "MMU Page Size" !! 329 def_bool y if SPARC64
285 default ARC_PAGE_SIZE_8K <<
286 330
287 config ARC_PAGE_SIZE_8K !! 331 config FORCE_MAX_ZONEORDER
288 bool "8KB" !! 332 int "Maximum zone order"
289 select HAVE_PAGE_SIZE_8KB !! 333 default "13"
290 help 334 help
291 Choose between 8k vs 16k !! 335 The kernel memory allocator divides physically contiguous memory
292 !! 336 blocks into "zones", where each zone is a power of two number of
293 config ARC_PAGE_SIZE_16K !! 337 pages. This option selects the largest power of two that the kernel
294 select HAVE_PAGE_SIZE_16KB !! 338 keeps in the memory allocator. If you need to allocate very large
295 bool "16KB" !! 339 blocks of physically contiguous memory, then you may need to
>> 340 increase this value.
296 341
297 config ARC_PAGE_SIZE_4K !! 342 This config option is actually maximum order plus one. For example,
298 bool "4KB" !! 343 a value of 13 means that the largest free memory block is 2^12 pages.
299 select HAVE_PAGE_SIZE_4KB <<
300 depends on ARC_MMU_V3 || ARC_MMU_V4 <<
301 344
302 endchoice !! 345 source "mm/Kconfig"
303 346
304 choice !! 347 if SPARC64
305 prompt "MMU Super Page Size" !! 348 source "kernel/power/Kconfig"
306 depends on ISA_ARCV2 && TRANSPARENT_HU !! 349 endif
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 <<
316 350
317 config PGTABLE_LEVELS !! 351 config SCHED_SMT
318 int "Number of Page table levels" !! 352 bool "SMT (Hyperthreading) scheduler support"
319 default 2 !! 353 depends on SPARC64 && SMP
>> 354 default y
>> 355 help
>> 356 SMT scheduler support improves the CPU scheduler's decision making
>> 357 when dealing with SPARC cpus at a cost of slightly increased overhead
>> 358 in some places. If unsure say N here.
>> 359
>> 360 config SCHED_MC
>> 361 bool "Multi-core scheduler support"
>> 362 depends on SPARC64 && SMP
>> 363 default y
>> 364 help
>> 365 Multi-core scheduler support improves the CPU scheduler's decision
>> 366 making when dealing with multi-core CPU chips at a cost of slightly
>> 367 increased overhead in some places. If unsure say N here.
>> 368
>> 369 source "kernel/Kconfig.preempt"
>> 370
>> 371 config CMDLINE_BOOL
>> 372 bool "Default bootloader kernel arguments"
>> 373 depends on SPARC64
>> 374
>> 375 config CMDLINE
>> 376 string "Initial kernel command string"
>> 377 depends on CMDLINE_BOOL
>> 378 default "console=ttyS0,9600 root=/dev/sda1"
>> 379 help
>> 380 Say Y here if you want to be able to pass default arguments to
>> 381 the kernel. This will be overridden by the bootloader, if you
>> 382 use one (such as SILO). This is most useful if you want to boot
>> 383 a kernel from TFTP, and want default options to be available
>> 384 with having them passed on the command line.
>> 385
>> 386 NOTE: This option WILL override the PROM bootargs setting!
>> 387
>> 388 config SUN_PM
>> 389 bool
>> 390 default y if SPARC32
>> 391 help
>> 392 Enable power management and CPU standby features on supported
>> 393 SPARC platforms.
>> 394
>> 395 config SPARC_LED
>> 396 tristate "Sun4m LED driver"
>> 397 depends on SPARC32
>> 398 help
>> 399 This driver toggles the front-panel LED on sun4m systems
>> 400 in a user-specifiable manner. Its state can be probed
>> 401 by reading /proc/led and its blinking mode can be changed
>> 402 via writes to /proc/led
>> 403
>> 404 config SERIAL_CONSOLE
>> 405 bool
>> 406 depends on SPARC32
>> 407 default y
>> 408 ---help---
>> 409 If you say Y here, it will be possible to use a serial port as the
>> 410 system console (the system console is the device which receives all
>> 411 kernel messages and warnings and which allows logins in single user
>> 412 mode). This could be useful if some terminal or printer is connected
>> 413 to that serial port.
>> 414
>> 415 Even if you say Y here, the currently visible virtual console
>> 416 (/dev/tty0) will still be used as the system console by default, but
>> 417 you can alter that using a kernel command line option such as
>> 418 "console=ttyS1". (Try "man bootparam" or see the documentation of
>> 419 your boot loader (silo) about how to pass options to the kernel at
>> 420 boot time.)
>> 421
>> 422 If you don't have a graphics card installed and you say Y here, the
>> 423 kernel will automatically use the first serial line, /dev/ttyS0, as
>> 424 system console.
>> 425
>> 426 If unsure, say N.
>> 427
>> 428 config SPARC_LEON
>> 429 bool "Sparc Leon processor family"
>> 430 depends on SPARC32
>> 431 select USB_EHCI_BIG_ENDIAN_MMIO
>> 432 select USB_EHCI_BIG_ENDIAN_DESC
>> 433 ---help---
>> 434 If you say Y here if you are running on a SPARC-LEON processor.
>> 435 The LEON processor is a synthesizable VHDL model of the
>> 436 SPARC-v8 standard. LEON is part of the GRLIB collection of
>> 437 IP cores that are distributed under GPL. GRLIB can be downloaded
>> 438 from www.gaisler.com. You can download a sparc-linux cross-compilation
>> 439 toolchain at www.gaisler.com.
>> 440
>> 441 if SPARC_LEON
>> 442 menu "U-Boot options"
>> 443
>> 444 config UBOOT_LOAD_ADDR
>> 445 hex "uImage Load Address"
>> 446 default 0x40004000
>> 447 ---help---
>> 448 U-Boot kernel load address, the address in physical address space
>> 449 where u-boot will place the Linux kernel before booting it.
>> 450 This address is normally the base address of main memory + 0x4000.
>> 451
>> 452 config UBOOT_FLASH_ADDR
>> 453 hex "uImage.o Load Address"
>> 454 default 0x00080000
>> 455 ---help---
>> 456 Optional setting only affecting the uImage.o ELF-image used to
>> 457 download the uImage file to the target using a ELF-loader other than
>> 458 U-Boot. It may for example be used to download an uImage to FLASH with
>> 459 the GRMON utility before even starting u-boot.
>> 460
>> 461 config UBOOT_ENTRY_ADDR
>> 462 hex "uImage Entry Address"
>> 463 default 0xf0004000
>> 464 ---help---
>> 465 Do not change this unless you know what you're doing. This is
>> 466 hardcoded by the SPARC32 and LEON port.
320 467
321 config ARC_COMPACT_IRQ_LEVELS !! 468 This is the virtual address u-boot jumps to when booting the Linux
322 depends on ISA_ARCOMPACT !! 469 Kernel.
323 bool "Setup Timer IRQ as high Priority <<
324 # if SMP, LV2 enabled ONLY if ARC impl <<
325 depends on !SMP <<
326 470
327 config ARC_FPU_SAVE_RESTORE !! 471 endmenu
328 bool "Enable FPU state persistence acr !! 472 endif
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 <<
335 config ARC_CANT_LLSC <<
336 def_bool n <<
337 473
338 config ARC_HAS_LLSC !! 474 endmenu
339 bool "Insn: LLOCK/SCOND (efficient ato <<
340 default y <<
341 depends on !ARC_CANT_LLSC <<
342 475
343 config ARC_HAS_SWAPE !! 476 menu "Bus options (PCI etc.)"
344 bool "Insn: SWAPE (endian-swap)" !! 477 config SBUS
>> 478 bool
345 default y 479 default y
346 480
347 if ISA_ARCV2 !! 481 config SBUSCHAR
348 !! 482 bool
349 config ARC_USE_UNALIGNED_MEM_ACCESS <<
350 bool "Enable unaligned access in HW" <<
351 default y 483 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 <<
357 484
358 config ARC_HAS_LL64 !! 485 config SUN_LDOMS
359 bool "Insn: 64bit LDD/STD" !! 486 bool "Sun Logical Domains support"
>> 487 depends on SPARC64
360 help 488 help
361 Enable gcc to generate 64-bit load/s !! 489 Say Y here is you want to support virtual devices via
362 ISA mandates even/odd registers to a !! 490 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 <<
369 491
370 config ARC_HAS_ACCL_REGS !! 492 config PCI
371 bool "Reg Pair ACCL:ACCH (FPU and/or M !! 493 bool "Support for PCI and PS/2 keyboard/mouse"
372 default y <<
373 help 494 help
374 Depending on the configuration, CPU !! 495 Find out whether your system includes a PCI bus. PCI is the name of
375 (also referred to as r58:r59). These !! 496 a bus system, i.e. the way the CPU talks to the other stuff inside
376 kernel needs to save/restore per pro !! 497 your box. If you say Y here, the kernel will include drivers and
>> 498 infrastructure code to support PCI bus devices.
377 499
378 config ARC_DSP_HANDLED !! 500 CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
379 def_bool n !! 501 CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
380 !! 502 All of these platforms are extremely obscure, so say N if unsure.
381 config ARC_DSP_SAVE_RESTORE_REGS <<
382 def_bool n <<
383 <<
384 choice <<
385 prompt "DSP support" <<
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 <<
392 503
393 config ARC_DSP_NONE !! 504 config PCI_DOMAINS
394 bool "No DSP extension presence in HW" !! 505 def_bool PCI if SPARC64
395 help <<
396 No DSP extension presence in HW <<
397 506
398 config ARC_DSP_KERNEL !! 507 config PCI_SYSCALL
399 bool "DSP extension in HW, no support !! 508 def_bool PCI
400 select ARC_HAS_ACCL_REGS <<
401 select ARC_DSP_HANDLED <<
402 help <<
403 DSP extension presence in HW, no sup <<
404 applications. We don't save / restor <<
405 some minimal preparations so userspa <<
406 509
407 config ARC_DSP_USERSPACE !! 510 config PCIC_PCI
408 bool "Support DSP for userspace apps" !! 511 bool
409 select ARC_HAS_ACCL_REGS !! 512 depends on PCI && SPARC32 && !SPARC_LEON
410 select ARC_DSP_HANDLED !! 513 default y
411 select ARC_DSP_SAVE_RESTORE_REGS <<
412 help <<
413 DSP extension presence in HW, suppor <<
414 run DSP-enabled userspace applicatio <<
415 514
416 config ARC_DSP_AGU_USERSPACE !! 515 config LEON_PCI
417 bool "Support DSP with AGU for userspa !! 516 bool
418 select ARC_HAS_ACCL_REGS !! 517 depends on PCI && SPARC_LEON
419 select ARC_DSP_HANDLED !! 518 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 <<
425 519
426 config ARC_IRQ_NO_AUTOSAVE !! 520 config SPARC_GRPCI1
427 bool "Disable hardware autosave regfil !! 521 bool "GRPCI Host Bridge Support"
428 default n !! 522 depends on LEON_PCI
>> 523 default y
429 help 524 help
430 On HS cores, taken interrupt auto sa !! 525 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
431 This is programmable and can be opti !! 526 PCI host controller is typically found in GRLIB SPARC32/LEON
432 software INTERRUPT_PROLOGUE/EPILGUE !! 527 systems. The driver has one property (all_pci_errors) controlled
>> 528 from the bootloader that makes the GRPCI to generate interrupts
>> 529 on detected PCI Parity and System errors.
433 530
434 config ARC_LPB_DISABLE !! 531 config SPARC_GRPCI2
435 bool "Disable loop buffer (LPB)" !! 532 bool "GRPCI2 Host Bridge Support"
>> 533 depends on LEON_PCI
>> 534 default y
436 help 535 help
437 On HS cores, loop buffer (LPB) is pr !! 536 Say Y here to include the GRPCI2 Host Bridge Driver.
438 be optionally disabled. <<
439 537
440 endif # ISA_ARCV2 !! 538 source "drivers/pci/Kconfig"
441 539
442 endmenu # "ARC CPU Configuration" !! 540 source "drivers/pcmcia/Kconfig"
443 541
444 config LINUX_LINK_BASE !! 542 config SUN_OPENPROMFS
445 hex "Kernel link address" !! 543 tristate "Openprom tree appears in /proc/openprom"
446 default "0x80000000" <<
447 help 544 help
448 ARC700 divides the 32 bit phy addres !! 545 If you say Y, the OpenPROM device tree will be available as a
449 -Lower 2G (0 - 0x7FFF_FFFF ) is user !! 546 virtual file system, which you can mount to /proc/openprom by "mount
450 -Upper 2G (0x8000_0000 onwards) is u !! 547 -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 <<
457 548
458 config LINUX_RAM_BASE !! 549 To compile the /proc/openprom support as a module, choose M here: the
459 hex "RAM base address" !! 550 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 <<
474 551
475 config ARC_HAS_PAE40 !! 552 Only choose N if you know in advance that you will not need to modify
476 bool "Support for the 40-bit Physical !! 553 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) <<
494 554
495 config ARC_CURR_IN_REG !! 555 # Makefile helpers
496 bool "cache current task pointer in gp !! 556 config SPARC64_PCI
>> 557 bool
497 default y 558 default y
498 help !! 559 depends on SPARC64 && PCI
499 This reserves gp register to point t <<
500 kernel mode eliding memory access fo <<
501 560
>> 561 config SPARC64_PCI_MSI
>> 562 bool
>> 563 default y
>> 564 depends on SPARC64_PCI && PCI_MSI
502 565
503 config ARC_EMUL_UNALIGNED !! 566 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 <<
512 567
513 config HZ !! 568 menu "Executable file formats"
514 int "Timer Frequency" <<
515 default 100 <<
516 569
517 config ARC_METAWARE_HLINK !! 570 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 <<
524 571
525 menuconfig ARC_DBG !! 572 config COMPAT
526 bool "ARC debugging" !! 573 bool
>> 574 depends on SPARC64
>> 575 default y
>> 576 select COMPAT_BINFMT_ELF
>> 577 select HAVE_UID16
>> 578 select ARCH_WANT_OLD_COMPAT_IPC
>> 579 select COMPAT_OLD_SIGACTION
>> 580
>> 581 config SYSVIPC_COMPAT
>> 582 bool
>> 583 depends on COMPAT && SYSVIPC
527 default y 584 default y
528 585
529 if ARC_DBG !! 586 endmenu
530 587
531 config ARC_DW2_UNWIND !! 588 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. <<
538 589
539 If you say Y here the resulting kern !! 590 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 <<
543 591
544 config ARC_DBG_JUMP_LABEL !! 592 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 <<
552 593
553 config ARC_BUILTIN_DTB_NAME !! 594 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 <<
558 595
559 endmenu # "ARC Architecture Configuration" !! 596 source "arch/sparc/Kconfig.debug"
560 597
561 config ARCH_FORCE_MAX_ORDER !! 598 source "security/Kconfig"
562 int "Maximum zone order" <<
563 default "11" if ARC_HUGEPAGE_16M <<
564 default "10" <<
565 599
566 source "kernel/power/Kconfig" !! 600 source "crypto/Kconfig"
>> 601
>> 602 source "lib/Kconfig"
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