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