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