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 HAVE_PCI
22 select DMA_DIRECT_REMAP !! 25 select SYSCTL_EXCEPTION_TRACE
23 select GENERIC_ATOMIC64 if !ISA_ARCV2 !! 26 select RTC_CLASS
24 # for now, we don't need GENERIC_IRQ_P !! 27 select RTC_DRV_M48T59
>> 28 select RTC_SYSTOHC
>> 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 <<
34 select HAVE_ARCH_TRACEHOOK <<
35 select HAVE_ARCH_TRANSPARENT_HUGEPAGE <<
36 select HAVE_DEBUG_STACKOVERFLOW <<
37 select HAVE_DEBUG_KMEMLEAK <<
38 select HAVE_IOREMAP_PROT <<
39 select HAVE_KERNEL_GZIP <<
40 select HAVE_KERNEL_LZMA <<
41 select HAVE_KPROBES <<
42 select HAVE_KRETPROBES <<
43 select HAVE_REGS_AND_STACK_ACCESS_API <<
44 select HAVE_MOD_ARCH_SPECIFIC <<
45 select HAVE_PERF_EVENTS <<
46 select HAVE_SYSCALL_TRACEPOINTS <<
47 select IRQ_DOMAIN <<
48 select LOCK_MM_AND_FIND_VMA <<
49 select MODULES_USE_ELF_RELA 41 select MODULES_USE_ELF_RELA
50 select OF <<
51 select OF_EARLY_FLATTREE <<
52 select PCI_SYSCALL if PCI 42 select PCI_SYSCALL if PCI
53 select HAVE_ARCH_JUMP_LABEL if ISA_ARC !! 43 select ODD_RT_SIGACTION
54 select TRACE_IRQFLAGS_SUPPORT !! 44 select OLD_SIGSUSPEND
55 select HAVE_EBPF_JIT if ISA_ARCV2 !! 45 select CPU_NO_EFFICIENT_FFS
>> 46 select LOCKDEP_SMALL if LOCKDEP
>> 47 select NEED_DMA_MAP_STATE
>> 48 select NEED_SG_DMA_LENGTH
56 49
57 config LOCKDEP_SUPPORT !! 50 config SPARC32
58 def_bool y !! 51 def_bool !64BIT
>> 52 select ARCH_HAS_SYNC_DMA_FOR_CPU
>> 53 select GENERIC_ATOMIC64
>> 54 select CLZ_TAB
>> 55 select HAVE_UID16
>> 56 select OLD_SIGACTION
>> 57
>> 58 config SPARC64
>> 59 def_bool 64BIT
>> 60 select HAVE_FUNCTION_TRACER
>> 61 select HAVE_FUNCTION_GRAPH_TRACER
>> 62 select HAVE_KRETPROBES
>> 63 select HAVE_KPROBES
>> 64 select HAVE_RCU_TABLE_FREE if SMP
>> 65 select HAVE_MEMBLOCK_NODE_MAP
>> 66 select HAVE_ARCH_TRANSPARENT_HUGEPAGE
>> 67 select HAVE_DYNAMIC_FTRACE
>> 68 select HAVE_FTRACE_MCOUNT_RECORD
>> 69 select HAVE_SYSCALL_TRACEPOINTS
>> 70 select HAVE_CONTEXT_TRACKING
>> 71 select HAVE_DEBUG_KMEMLEAK
>> 72 select IOMMU_HELPER
>> 73 select SPARSE_IRQ
>> 74 select RTC_DRV_CMOS
>> 75 select RTC_DRV_BQ4802
>> 76 select RTC_DRV_SUN4V
>> 77 select RTC_DRV_STARFIRE
>> 78 select HAVE_PERF_EVENTS
>> 79 select PERF_USE_VMALLOC
>> 80 select IRQ_PREFLOW_FASTEOI
>> 81 select ARCH_HAVE_NMI_SAFE_CMPXCHG
>> 82 select HAVE_C_RECORDMCOUNT
>> 83 select HAVE_ARCH_AUDITSYSCALL
>> 84 select ARCH_SUPPORTS_ATOMIC_RMW
>> 85 select HAVE_NMI
>> 86 select HAVE_REGS_AND_STACK_ACCESS_API
>> 87 select ARCH_USE_QUEUED_RWLOCKS
>> 88 select ARCH_USE_QUEUED_SPINLOCKS
>> 89 select GENERIC_TIME_VSYSCALL
>> 90 select ARCH_CLOCKSOURCE_DATA
>> 91 select ARCH_HAS_PTE_SPECIAL
>> 92 select PCI_DOMAINS if PCI
59 93
60 config SCHED_OMIT_FRAME_POINTER !! 94 config ARCH_DEFCONFIG
61 def_bool y !! 95 string
>> 96 default "arch/sparc/configs/sparc32_defconfig" if SPARC32
>> 97 default "arch/sparc/configs/sparc64_defconfig" if SPARC64
62 98
63 config GENERIC_CSUM !! 99 config ARCH_PROC_KCORE_TEXT
64 def_bool y 100 def_bool y
65 101
66 config ARCH_FLATMEM_ENABLE !! 102 config CPU_BIG_ENDIAN
67 def_bool y 103 def_bool y
68 104
69 config MMU !! 105 config ARCH_ATU
70 def_bool y !! 106 bool
>> 107 default y if SPARC64
71 108
72 config NO_IOPORT_MAP !! 109 config STACKTRACE_SUPPORT
73 def_bool y !! 110 bool
>> 111 default y if SPARC64
74 112
75 config GENERIC_CALIBRATE_DELAY !! 113 config LOCKDEP_SUPPORT
76 def_bool y !! 114 bool
>> 115 default y if SPARC64
77 116
78 config GENERIC_HWEIGHT !! 117 config ARCH_HIBERNATION_POSSIBLE
79 def_bool y !! 118 def_bool y if SPARC64
80 119
81 config STACKTRACE_SUPPORT !! 120 config AUDIT_ARCH
82 def_bool y !! 121 bool
83 select STACKTRACE !! 122 default y
84 123
85 menu "ARC Architecture Configuration" !! 124 config HAVE_SETUP_PER_CPU_AREA
>> 125 def_bool y if SPARC64
86 126
87 menu "ARC Platform/SoC/Board" !! 127 config NEED_PER_CPU_EMBED_FIRST_CHUNK
>> 128 def_bool y if SPARC64
88 129
89 source "arch/arc/plat-tb10x/Kconfig" !! 130 config NEED_PER_CPU_PAGE_FIRST_CHUNK
90 source "arch/arc/plat-axs10x/Kconfig" !! 131 def_bool y if SPARC64
91 source "arch/arc/plat-hsdk/Kconfig" <<
92 132
93 endmenu !! 133 config MMU
>> 134 bool
>> 135 default y
94 136
95 choice !! 137 config HIGHMEM
96 prompt "ARC Instruction Set" !! 138 bool
97 default ISA_ARCV2 !! 139 default y if SPARC32
98 140
99 config ISA_ARCOMPACT !! 141 config ZONE_DMA
100 bool "ARCompact ISA" !! 142 bool
101 select CPU_NO_EFFICIENT_FFS !! 143 default y if SPARC32
102 help !! 144
103 The original ARC ISA of ARC600/700 c !! 145 config GENERIC_ISA_DMA
>> 146 bool
>> 147 default y if SPARC32
104 148
105 config ISA_ARCV2 !! 149 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
106 bool "ARC ISA v2" !! 150 def_bool y if SPARC64
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 <<
161 151
162 config CPU_BIG_ENDIAN !! 152 config PGTABLE_LEVELS
163 bool "Enable Big Endian Mode" !! 153 default 4 if 64BIT
164 help !! 154 default 3
165 Build kernel for Big Endian Mode of <<
166 155
167 config SMP !! 156 config ARCH_SUPPORTS_UPROBES
168 bool "Symmetric Multi-Processing" !! 157 def_bool y if SPARC64
169 select ARC_MCIP if ISA_ARCV2 <<
170 help <<
171 This enables support for systems wit <<
172 158
173 if SMP !! 159 menu "Processor type and features"
174 160
175 config NR_CPUS !! 161 config SMP
176 int "Maximum number of CPUs (2-4096)" !! 162 bool "Symmetric multi-processing support"
177 range 2 4096 !! 163 ---help---
178 default "4" !! 164 This enables support for systems with more than one CPU. If you have
>> 165 a system with only one CPU, say N. If you have a system with more
>> 166 than one CPU, say Y.
>> 167
>> 168 If you say N here, the kernel will run on uni- and multiprocessor
>> 169 machines, but will use only one CPU of a multiprocessor machine. If
>> 170 you say Y here, the kernel will run on many, but not all,
>> 171 uniprocessor machines. On a uniprocessor machine, the kernel
>> 172 will run faster if you say N here.
>> 173
>> 174 People using multiprocessor machines who say Y here should also say
>> 175 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
>> 176 Management" code will be disabled if you say Y here.
179 177
180 config ARC_SMP_HALT_ON_RESET !! 178 See also <file:Documentation/lockup-watchdogs.txt> and the SMP-HOWTO
181 bool "Enable Halt-on-reset boot mode" !! 179 available at <http://www.tldp.org/docs.html#howto>.
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 <<
188 180
189 endif #SMP !! 181 If you don't know what to do here, say N.
190 182
191 config ARC_MCIP !! 183 config NR_CPUS
192 bool "ARConnect Multicore IP (MCIP) Su !! 184 int "Maximum number of CPUs"
193 depends on ISA_ARCV2 !! 185 depends on SMP
194 default y if SMP !! 186 range 2 32 if SPARC32
195 help !! 187 range 2 4096 if SPARC64
196 This IP block enables SMP in ARC-HS3 !! 188 default 32 if SPARC32
197 It provides for cross-core interrupt !! 189 default 4096 if SPARC64
198 hardware semaphores, shared memory,. !! 190
>> 191 source "kernel/Kconfig.hz"
>> 192
>> 193 config RWSEM_GENERIC_SPINLOCK
>> 194 bool
>> 195 default y if SPARC32
>> 196
>> 197 config RWSEM_XCHGADD_ALGORITHM
>> 198 bool
>> 199 default y if SPARC64
199 200
200 menuconfig ARC_CACHE !! 201 config GENERIC_HWEIGHT
201 bool "Enable Cache Support" !! 202 bool
>> 203 default y
>> 204
>> 205 config GENERIC_CALIBRATE_DELAY
>> 206 bool
202 default y 207 default y
203 208
204 if ARC_CACHE !! 209 config ARCH_MAY_HAVE_PC_FDC
>> 210 bool
>> 211 default y
205 212
206 config ARC_CACHE_LINE_SHIFT !! 213 config EMULATED_CMPXCHG
207 int "Cache Line Length (as power of 2) !! 214 bool
208 range 5 7 !! 215 default y if SPARC32
209 default "6" <<
210 help 216 help
211 Starting with ARC700 4.9, Cache line !! 217 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
212 This option specifies "N", with Line !! 218 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 <<
215 219
216 config ARC_HAS_ICACHE !! 220 # Makefile helpers
217 bool "Use Instruction Cache" !! 221 config SPARC32_SMP
>> 222 bool
218 default y 223 default y
>> 224 depends on SPARC32 && SMP
219 225
220 config ARC_HAS_DCACHE !! 226 config SPARC64_SMP
221 bool "Use Data Cache" !! 227 bool
222 default y 228 default y
>> 229 depends on SPARC64 && SMP
223 230
224 config ARC_CACHE_PAGES !! 231 config EARLYFB
225 bool "Per Page Cache Control" !! 232 bool "Support for early boot text console"
226 default y 233 default y
227 depends on ARC_HAS_ICACHE || ARC_HAS_D !! 234 depends on SPARC64
228 help 235 help
229 This can be used to over-ride the gl !! 236 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 <<
237 237
238 config ARC_HAS_ICCM !! 238 config SECCOMP
239 bool "Use ICCM" !! 239 bool "Enable seccomp to safely compute untrusted bytecode"
>> 240 depends on SPARC64 && PROC_FS
>> 241 default y
240 help 242 help
241 Single Cycle RAMS to store Fast Path !! 243 This kernel feature is useful for number crunching applications
>> 244 that may need to compute untrusted bytecode during their
>> 245 execution. By using pipes or other transports made available to
>> 246 the process as file descriptors supporting the read/write
>> 247 syscalls, it's possible to isolate those applications in
>> 248 their own address space using seccomp. Once seccomp is
>> 249 enabled via /proc/<pid>/seccomp, it cannot be disabled
>> 250 and the task is only allowed to execute a few safe syscalls
>> 251 defined by each seccomp mode.
242 252
243 config ARC_ICCM_SZ !! 253 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 <<
247 254
248 config ARC_HAS_DCCM !! 255 config HOTPLUG_CPU
249 bool "Use DCCM" !! 256 bool "Support for hot-pluggable CPUs"
>> 257 depends on SPARC64 && SMP
250 help 258 help
251 Single Cycle RAMS to store Fast Path !! 259 Say Y here to experiment with turning CPUs off and on. CPUs
252 !! 260 can be controlled through /sys/devices/system/cpu/cpu#.
253 config ARC_DCCM_SZ !! 261 Say N if you want to disable CPU hotplug.
254 int "DCCM Size in KB" <<
255 default "64" <<
256 depends on ARC_HAS_DCCM <<
257 262
258 config ARC_DCCM_BASE !! 263 if SPARC64
259 hex "DCCM map address" !! 264 source "drivers/cpufreq/Kconfig"
260 default "0xA0000000" !! 265 endif
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) <<
275 266
276 config ARC_MMU_V4 !! 267 config US3_MC
277 bool "MMU v4" !! 268 tristate "UltraSPARC-III Memory Controller driver"
278 depends on ISA_ARCV2 !! 269 depends on SPARC64
>> 270 default y
>> 271 help
>> 272 This adds a driver for the UltraSPARC-III memory controller.
>> 273 Loading this driver allows exact mnemonic strings to be
>> 274 printed in the event of a memory error, so that the faulty DIMM
>> 275 on the motherboard can be matched to the error.
>> 276
>> 277 If in doubt, say Y, as this information can be very useful.
>> 278
>> 279 # Global things across all Sun machines.
>> 280 config GENERIC_LOCKBREAK
>> 281 bool
>> 282 default y
>> 283 depends on SPARC64 && SMP && PREEMPT
>> 284
>> 285 config NUMA
>> 286 bool "NUMA support"
>> 287 depends on SPARC64 && SMP
>> 288
>> 289 config NODES_SHIFT
>> 290 int "Maximum NUMA Nodes (as a power of 2)"
>> 291 range 4 5 if SPARC64
>> 292 default "5"
>> 293 depends on NEED_MULTIPLE_NODES
>> 294 help
>> 295 Specify the maximum number of NUMA Nodes available on the target
>> 296 system. Increases memory reserved to accommodate various tables.
>> 297
>> 298 # Some NUMA nodes have memory ranges that span
>> 299 # other nodes. Even though a pfn is valid and
>> 300 # between a node's start and end pfns, it may not
>> 301 # reside on that node. See memmap_init_zone()
>> 302 # for details.
>> 303 config NODES_SPAN_OTHER_NODES
>> 304 def_bool y
>> 305 depends on NEED_MULTIPLE_NODES
279 306
280 endchoice !! 307 config ARCH_SELECT_MEMORY_MODEL
>> 308 def_bool y if SPARC64
281 309
>> 310 config ARCH_SPARSEMEM_ENABLE
>> 311 def_bool y if SPARC64
>> 312 select SPARSEMEM_VMEMMAP_ENABLE
282 313
283 choice !! 314 config ARCH_SPARSEMEM_DEFAULT
284 prompt "MMU Page Size" !! 315 def_bool y if SPARC64
285 default ARC_PAGE_SIZE_8K <<
286 316
287 config ARC_PAGE_SIZE_8K !! 317 config FORCE_MAX_ZONEORDER
288 bool "8KB" !! 318 int "Maximum zone order"
289 select HAVE_PAGE_SIZE_8KB !! 319 default "13"
290 help 320 help
291 Choose between 8k vs 16k !! 321 The kernel memory allocator divides physically contiguous memory
292 !! 322 blocks into "zones", where each zone is a power of two number of
293 config ARC_PAGE_SIZE_16K !! 323 pages. This option selects the largest power of two that the kernel
294 select HAVE_PAGE_SIZE_16KB !! 324 keeps in the memory allocator. If you need to allocate very large
295 bool "16KB" !! 325 blocks of physically contiguous memory, then you may need to
296 !! 326 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 <<
301 327
302 endchoice !! 328 This config option is actually maximum order plus one. For example,
>> 329 a value of 13 means that the largest free memory block is 2^12 pages.
303 330
304 choice !! 331 if SPARC64
305 prompt "MMU Super Page Size" !! 332 source "kernel/power/Kconfig"
306 depends on ISA_ARCV2 && TRANSPARENT_HU !! 333 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 <<
316 334
317 config PGTABLE_LEVELS !! 335 config SCHED_SMT
318 int "Number of Page table levels" !! 336 bool "SMT (Hyperthreading) scheduler support"
319 default 2 !! 337 depends on SPARC64 && SMP
>> 338 default y
>> 339 help
>> 340 SMT scheduler support improves the CPU scheduler's decision making
>> 341 when dealing with SPARC cpus at a cost of slightly increased overhead
>> 342 in some places. If unsure say N here.
>> 343
>> 344 config SCHED_MC
>> 345 bool "Multi-core scheduler support"
>> 346 depends on SPARC64 && SMP
>> 347 default y
>> 348 help
>> 349 Multi-core scheduler support improves the CPU scheduler's decision
>> 350 making when dealing with multi-core CPU chips at a cost of slightly
>> 351 increased overhead in some places. If unsure say N here.
>> 352
>> 353 config CMDLINE_BOOL
>> 354 bool "Default bootloader kernel arguments"
>> 355 depends on SPARC64
>> 356
>> 357 config CMDLINE
>> 358 string "Initial kernel command string"
>> 359 depends on CMDLINE_BOOL
>> 360 default "console=ttyS0,9600 root=/dev/sda1"
>> 361 help
>> 362 Say Y here if you want to be able to pass default arguments to
>> 363 the kernel. This will be overridden by the bootloader, if you
>> 364 use one (such as SILO). This is most useful if you want to boot
>> 365 a kernel from TFTP, and want default options to be available
>> 366 with having them passed on the command line.
>> 367
>> 368 NOTE: This option WILL override the PROM bootargs setting!
>> 369
>> 370 config SUN_PM
>> 371 bool
>> 372 default y if SPARC32
>> 373 help
>> 374 Enable power management and CPU standby features on supported
>> 375 SPARC platforms.
>> 376
>> 377 config SPARC_LED
>> 378 tristate "Sun4m LED driver"
>> 379 depends on SPARC32
>> 380 help
>> 381 This driver toggles the front-panel LED on sun4m systems
>> 382 in a user-specifiable manner. Its state can be probed
>> 383 by reading /proc/led and its blinking mode can be changed
>> 384 via writes to /proc/led
>> 385
>> 386 config SERIAL_CONSOLE
>> 387 bool
>> 388 depends on SPARC32
>> 389 default y
>> 390 ---help---
>> 391 If you say Y here, it will be possible to use a serial port as the
>> 392 system console (the system console is the device which receives all
>> 393 kernel messages and warnings and which allows logins in single user
>> 394 mode). This could be useful if some terminal or printer is connected
>> 395 to that serial port.
>> 396
>> 397 Even if you say Y here, the currently visible virtual console
>> 398 (/dev/tty0) will still be used as the system console by default, but
>> 399 you can alter that using a kernel command line option such as
>> 400 "console=ttyS1". (Try "man bootparam" or see the documentation of
>> 401 your boot loader (silo) about how to pass options to the kernel at
>> 402 boot time.)
>> 403
>> 404 If you don't have a graphics card installed and you say Y here, the
>> 405 kernel will automatically use the first serial line, /dev/ttyS0, as
>> 406 system console.
>> 407
>> 408 If unsure, say N.
>> 409
>> 410 config SPARC_LEON
>> 411 bool "Sparc Leon processor family"
>> 412 depends on SPARC32
>> 413 select USB_EHCI_BIG_ENDIAN_MMIO
>> 414 select USB_EHCI_BIG_ENDIAN_DESC
>> 415 select USB_UHCI_BIG_ENDIAN_MMIO
>> 416 select USB_UHCI_BIG_ENDIAN_DESC
>> 417 ---help---
>> 418 If you say Y here if you are running on a SPARC-LEON processor.
>> 419 The LEON processor is a synthesizable VHDL model of the
>> 420 SPARC-v8 standard. LEON is part of the GRLIB collection of
>> 421 IP cores that are distributed under GPL. GRLIB can be downloaded
>> 422 from www.gaisler.com. You can download a sparc-linux cross-compilation
>> 423 toolchain at www.gaisler.com.
>> 424
>> 425 if SPARC_LEON
>> 426 menu "U-Boot options"
>> 427
>> 428 config UBOOT_LOAD_ADDR
>> 429 hex "uImage Load Address"
>> 430 default 0x40004000
>> 431 ---help---
>> 432 U-Boot kernel load address, the address in physical address space
>> 433 where u-boot will place the Linux kernel before booting it.
>> 434 This address is normally the base address of main memory + 0x4000.
>> 435
>> 436 config UBOOT_FLASH_ADDR
>> 437 hex "uImage.o Load Address"
>> 438 default 0x00080000
>> 439 ---help---
>> 440 Optional setting only affecting the uImage.o ELF-image used to
>> 441 download the uImage file to the target using a ELF-loader other than
>> 442 U-Boot. It may for example be used to download an uImage to FLASH with
>> 443 the GRMON utility before even starting u-boot.
>> 444
>> 445 config UBOOT_ENTRY_ADDR
>> 446 hex "uImage Entry Address"
>> 447 default 0xf0004000
>> 448 ---help---
>> 449 Do not change this unless you know what you're doing. This is
>> 450 hardcoded by the SPARC32 and LEON port.
320 451
321 config ARC_COMPACT_IRQ_LEVELS !! 452 This is the virtual address u-boot jumps to when booting the Linux
322 depends on ISA_ARCOMPACT !! 453 Kernel.
323 bool "Setup Timer IRQ as high Priority <<
324 # if SMP, LV2 enabled ONLY if ARC impl <<
325 depends on !SMP <<
326 454
327 config ARC_FPU_SAVE_RESTORE !! 455 endmenu
328 bool "Enable FPU state persistence acr !! 456 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 <<
334 457
335 config ARC_CANT_LLSC !! 458 endmenu
336 def_bool n <<
337 459
338 config ARC_HAS_LLSC !! 460 menu "Bus options (PCI etc.)"
339 bool "Insn: LLOCK/SCOND (efficient ato !! 461 config SBUS
>> 462 bool
340 default y 463 default y
341 depends on !ARC_CANT_LLSC <<
342 464
343 config ARC_HAS_SWAPE !! 465 config SBUSCHAR
344 bool "Insn: SWAPE (endian-swap)" !! 466 bool
345 default y 467 default y
346 468
347 if ISA_ARCV2 !! 469 config SUN_LDOMS
348 !! 470 bool "Sun Logical Domains support"
349 config ARC_USE_UNALIGNED_MEM_ACCESS !! 471 depends on SPARC64
350 bool "Enable unaligned access in HW" <<
351 default y <<
352 select HAVE_EFFICIENT_UNALIGNED_ACCESS <<
353 help 472 help
354 The ARC HS architecture supports una !! 473 Say Y here is you want to support virtual devices via
355 which is disabled by default. Enable !! 474 Logical Domains.
356 hardware and use software to use it <<
357 475
358 config ARC_HAS_LL64 !! 476 config PCIC_PCI
359 bool "Insn: 64bit LDD/STD" !! 477 bool
360 help !! 478 depends on PCI && SPARC32 && !SPARC_LEON
361 Enable gcc to generate 64-bit load/s <<
362 ISA mandates even/odd registers to a <<
363 dest operands with 2 possible source <<
364 default y 479 default y
365 480
366 config ARC_HAS_DIV_REM !! 481 config LEON_PCI
367 bool "Insn: div, divu, rem, remu" !! 482 bool
>> 483 depends on PCI && SPARC_LEON
368 default y 484 default y
369 485
370 config ARC_HAS_ACCL_REGS !! 486 config SPARC_GRPCI1
371 bool "Reg Pair ACCL:ACCH (FPU and/or M !! 487 bool "GRPCI Host Bridge Support"
>> 488 depends on LEON_PCI
372 default y 489 default y
373 help 490 help
374 Depending on the configuration, CPU !! 491 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
375 (also referred to as r58:r59). These !! 492 PCI host controller is typically found in GRLIB SPARC32/LEON
376 kernel needs to save/restore per pro !! 493 systems. The driver has one property (all_pci_errors) controlled
377 !! 494 from the bootloader that makes the GRPCI to generate interrupts
378 config ARC_DSP_HANDLED !! 495 on detected PCI Parity and System errors.
379 def_bool n <<
380 <<
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 <<
393 config ARC_DSP_NONE <<
394 bool "No DSP extension presence in HW" <<
395 help <<
396 No DSP extension presence in HW <<
397 <<
398 config ARC_DSP_KERNEL <<
399 bool "DSP extension in HW, no support <<
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 <<
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 <<
416 config ARC_DSP_AGU_USERSPACE <<
417 bool "Support DSP with AGU for userspa <<
418 select ARC_HAS_ACCL_REGS <<
419 select ARC_DSP_HANDLED <<
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 <<
426 config ARC_IRQ_NO_AUTOSAVE <<
427 bool "Disable hardware autosave regfil <<
428 default n <<
429 help <<
430 On HS cores, taken interrupt auto sa <<
431 This is programmable and can be opti <<
432 software INTERRUPT_PROLOGUE/EPILGUE <<
433 <<
434 config ARC_LPB_DISABLE <<
435 bool "Disable loop buffer (LPB)" <<
436 help <<
437 On HS cores, loop buffer (LPB) is pr <<
438 be optionally disabled. <<
439 <<
440 endif # ISA_ARCV2 <<
441 <<
442 endmenu # "ARC CPU Configuration" <<
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 <<
458 config LINUX_RAM_BASE <<
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 <<
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 <<
475 config ARC_HAS_PAE40 <<
476 bool "Support for the 40-bit Physical <<
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 <<
483 496
484 config ARC_KVADDR_SIZE !! 497 config SPARC_GRPCI2
485 int "Kernel Virtual Address Space size !! 498 bool "GRPCI2 Host Bridge Support"
486 range 0 512 !! 499 depends on LEON_PCI
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 <<
495 config ARC_CURR_IN_REG <<
496 bool "cache current task pointer in gp <<
497 default y 500 default y
498 help 501 help
499 This reserves gp register to point t !! 502 Say Y here to include the GRPCI2 Host Bridge Driver.
500 kernel mode eliding memory access fo <<
501 503
502 !! 504 config SUN_OPENPROMFS
503 config ARC_EMUL_UNALIGNED !! 505 tristate "Openprom tree appears in /proc/openprom"
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 506 help
509 This enables misaligned 16 & 32 bit !! 507 If you say Y, the OpenPROM device tree will be available as a
510 Use ONLY-IF-ABS-NECESSARY as it will !! 508 virtual file system, which you can mount to /proc/openprom by "mount
511 potential bugs in code !! 509 -t openpromfs none /proc/openprom".
512 510
513 config HZ !! 511 To compile the /proc/openprom support as a module, choose M here: the
514 int "Timer Frequency" !! 512 module will be called openpromfs.
515 default 100 <<
516 513
517 config ARC_METAWARE_HLINK !! 514 Only choose N if you know in advance that you will not need to modify
518 bool "Support for Metaware debugger as !! 515 OpenPROM settings on the running system.
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 <<
524 516
525 menuconfig ARC_DBG !! 517 # Makefile helpers
526 bool "ARC debugging" !! 518 config SPARC64_PCI
>> 519 bool
527 default y 520 default y
>> 521 depends on SPARC64 && PCI
528 522
529 if ARC_DBG !! 523 config SPARC64_PCI_MSI
530 !! 524 bool
531 config ARC_DW2_UNWIND <<
532 bool "Enable DWARF specific kernel sta <<
533 default y 525 default y
534 select KALLSYMS !! 526 depends on SPARC64_PCI && PCI_MSI
535 help <<
536 Compiles the kernel with DWARF unwin <<
537 to get stack backtraces. <<
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 <<
544 config ARC_DBG_JUMP_LABEL <<
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 <<
552 527
553 config ARC_BUILTIN_DTB_NAME !! 528 endmenu
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 <<
558 529
559 endmenu # "ARC Architecture Configuration" !! 530 config COMPAT
>> 531 bool
>> 532 depends on SPARC64
>> 533 default y
>> 534 select COMPAT_BINFMT_ELF
>> 535 select HAVE_UID16
>> 536 select ARCH_WANT_OLD_COMPAT_IPC
>> 537 select COMPAT_OLD_SIGACTION
560 538
561 config ARCH_FORCE_MAX_ORDER !! 539 config SYSVIPC_COMPAT
562 int "Maximum zone order" !! 540 bool
563 default "11" if ARC_HUGEPAGE_16M !! 541 depends on COMPAT && SYSVIPC
564 default "10" !! 542 default y
565 543
566 source "kernel/power/Kconfig" !! 544 source "drivers/sbus/char/Kconfig"
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