1 # SPDX-License-Identifier: GPL-2.0-only 1 # SPDX-License-Identifier: GPL-2.0-only
2 # !! 2 config 64BIT
3 # Copyright (C) 2004, 2007-2010, 2011-2012 Syn !! 3 bool "64-bit kernel" if "$(ARCH)" = "sparc"
4 # !! 4 default "$(ARCH)" = "sparc64"
>> 5 help
>> 6 SPARC is a family of RISC microprocessors designed and marketed by
>> 7 Sun Microsystems, incorporated. They are very widely found in Sun
>> 8 workstations and clones.
5 9
6 config ARC !! 10 Say yes to build a 64-bit kernel - formerly known as sparc64
7 def_bool y !! 11 Say no to build a 32-bit kernel - formerly known as sparc
8 select ARC_TIMERS !! 12
9 select ARCH_HAS_CACHE_LINE_SIZE !! 13 config SPARC
10 select ARCH_HAS_DEBUG_VM_PGTABLE !! 14 bool
11 select ARCH_HAS_DMA_PREP_COHERENT !! 15 default y
12 select ARCH_HAS_PTE_SPECIAL !! 16 select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI
13 select ARCH_HAS_SETUP_DMA_OPS !! 17 select ARCH_MIGHT_HAVE_PC_SERIO
14 select ARCH_HAS_SYNC_DMA_FOR_CPU !! 18 select OF
15 select ARCH_HAS_SYNC_DMA_FOR_DEVICE !! 19 select OF_PROMTREE
16 select ARCH_NEED_CMPXCHG_1_EMU !! 20 select HAVE_ASM_MODVERSIONS
17 select ARCH_SUPPORTS_ATOMIC_RMW if ARC !! 21 select HAVE_IDE
18 select ARCH_32BIT_OFF_T !! 22 select HAVE_OPROFILE
19 select BUILDTIME_TABLE_SORT !! 23 select HAVE_ARCH_KGDB if !SMP || SPARC64
20 select CLONE_BACKWARDS !! 24 select HAVE_ARCH_TRACEHOOK
21 select COMMON_CLK !! 25 select HAVE_EXIT_THREAD
22 select DMA_DIRECT_REMAP !! 26 select HAVE_PCI
23 select GENERIC_ATOMIC64 if !ISA_ARCV2 !! 27 select SYSCTL_EXCEPTION_TRACE
24 # for now, we don't need GENERIC_IRQ_P !! 28 select RTC_CLASS
>> 29 select RTC_DRV_M48T59
>> 30 select RTC_SYSTOHC
>> 31 select HAVE_ARCH_JUMP_LABEL if SPARC64
25 select GENERIC_IRQ_SHOW 32 select GENERIC_IRQ_SHOW
>> 33 select ARCH_WANT_IPC_PARSE_VERSION
26 select GENERIC_PCI_IOMAP 34 select GENERIC_PCI_IOMAP
27 select GENERIC_PENDING_IRQ if SMP !! 35 select HAVE_NMI_WATCHDOG if SPARC64
28 select GENERIC_SCHED_CLOCK !! 36 select HAVE_CBPF_JIT if SPARC32
>> 37 select HAVE_EBPF_JIT if SPARC64
>> 38 select HAVE_DEBUG_BUGVERBOSE
29 select GENERIC_SMP_IDLE_THREAD 39 select GENERIC_SMP_IDLE_THREAD
30 select GENERIC_IOREMAP !! 40 select GENERIC_CLOCKEVENTS
31 select GENERIC_STRNCPY_FROM_USER if MM !! 41 select GENERIC_STRNCPY_FROM_USER
32 select GENERIC_STRNLEN_USER if MMU !! 42 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 43 select MODULES_USE_ELF_RELA
50 select OF <<
51 select OF_EARLY_FLATTREE <<
52 select PCI_SYSCALL if PCI 44 select PCI_SYSCALL if PCI
53 select HAVE_ARCH_JUMP_LABEL if ISA_ARC !! 45 select ODD_RT_SIGACTION
54 select TRACE_IRQFLAGS_SUPPORT !! 46 select OLD_SIGSUSPEND
55 select HAVE_EBPF_JIT if ISA_ARCV2 !! 47 select CPU_NO_EFFICIENT_FFS
>> 48 select LOCKDEP_SMALL if LOCKDEP
>> 49 select NEED_DMA_MAP_STATE
>> 50 select NEED_SG_DMA_LENGTH
56 51
57 config LOCKDEP_SUPPORT !! 52 config SPARC32
58 def_bool y !! 53 def_bool !64BIT
>> 54 select ARCH_32BIT_OFF_T
>> 55 select ARCH_HAS_SYNC_DMA_FOR_CPU
>> 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
>> 65 select HAVE_KRETPROBES
>> 66 select HAVE_KPROBES
>> 67 select MMU_GATHER_RCU_TABLE_FREE if SMP
>> 68 select HAVE_MEMBLOCK_NODE_MAP
>> 69 select HAVE_ARCH_TRANSPARENT_HUGEPAGE
>> 70 select HAVE_DYNAMIC_FTRACE
>> 71 select HAVE_FTRACE_MCOUNT_RECORD
>> 72 select HAVE_SYSCALL_TRACEPOINTS
>> 73 select HAVE_CONTEXT_TRACKING
>> 74 select HAVE_DEBUG_KMEMLEAK
>> 75 select IOMMU_HELPER
>> 76 select SPARSE_IRQ
>> 77 select RTC_DRV_CMOS
>> 78 select RTC_DRV_BQ4802
>> 79 select RTC_DRV_SUN4V
>> 80 select RTC_DRV_STARFIRE
>> 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
>> 95 select PCI_DOMAINS if PCI
>> 96 select ARCH_HAS_GIGANTIC_PAGE
59 97
60 config SCHED_OMIT_FRAME_POINTER !! 98 config ARCH_DEFCONFIG
61 def_bool y !! 99 string
>> 100 default "arch/sparc/configs/sparc32_defconfig" if SPARC32
>> 101 default "arch/sparc/configs/sparc64_defconfig" if SPARC64
62 102
63 config GENERIC_CSUM !! 103 config ARCH_PROC_KCORE_TEXT
64 def_bool y 104 def_bool y
65 105
66 config ARCH_FLATMEM_ENABLE !! 106 config CPU_BIG_ENDIAN
67 def_bool y 107 def_bool y
68 108
69 config MMU !! 109 config ARCH_ATU
70 def_bool y !! 110 bool
>> 111 default y if SPARC64
71 112
72 config NO_IOPORT_MAP !! 113 config STACKTRACE_SUPPORT
73 def_bool y !! 114 bool
>> 115 default y if SPARC64
74 116
75 config GENERIC_CALIBRATE_DELAY !! 117 config LOCKDEP_SUPPORT
76 def_bool y !! 118 bool
>> 119 default y if SPARC64
77 120
78 config GENERIC_HWEIGHT !! 121 config ARCH_HIBERNATION_POSSIBLE
79 def_bool y !! 122 def_bool y if SPARC64
80 123
81 config STACKTRACE_SUPPORT !! 124 config AUDIT_ARCH
82 def_bool y !! 125 bool
83 select STACKTRACE !! 126 default y
84 127
85 menu "ARC Architecture Configuration" !! 128 config HAVE_SETUP_PER_CPU_AREA
>> 129 def_bool y if SPARC64
86 130
87 menu "ARC Platform/SoC/Board" !! 131 config NEED_PER_CPU_EMBED_FIRST_CHUNK
>> 132 def_bool y if SPARC64
88 133
89 source "arch/arc/plat-tb10x/Kconfig" !! 134 config NEED_PER_CPU_PAGE_FIRST_CHUNK
90 source "arch/arc/plat-axs10x/Kconfig" !! 135 def_bool y if SPARC64
91 source "arch/arc/plat-hsdk/Kconfig" <<
92 136
93 endmenu !! 137 config MMU
>> 138 bool
>> 139 default y
94 140
95 choice !! 141 config HIGHMEM
96 prompt "ARC Instruction Set" !! 142 bool
97 default ISA_ARCV2 !! 143 default y if SPARC32
98 144
99 config ISA_ARCOMPACT !! 145 config ZONE_DMA
100 bool "ARCompact ISA" !! 146 bool
101 select CPU_NO_EFFICIENT_FFS !! 147 default y if SPARC32
102 help !! 148
103 The original ARC ISA of ARC600/700 c !! 149 config GENERIC_ISA_DMA
>> 150 bool
>> 151 default y if SPARC32
104 152
105 config ISA_ARCV2 !! 153 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
106 bool "ARC ISA v2" !! 154 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 <<
161 155
162 config CPU_BIG_ENDIAN !! 156 config PGTABLE_LEVELS
163 bool "Enable Big Endian Mode" !! 157 default 4 if 64BIT
164 help !! 158 default 3
165 Build kernel for Big Endian Mode of !! 159
>> 160 config ARCH_SUPPORTS_UPROBES
>> 161 def_bool y if SPARC64
>> 162
>> 163 menu "Processor type and features"
166 164
167 config SMP 165 config SMP
168 bool "Symmetric Multi-Processing" !! 166 bool "Symmetric multi-processing support"
169 select ARC_MCIP if ISA_ARCV2 !! 167 ---help---
170 help !! 168 This enables support for systems with more than one CPU. If you have
171 This enables support for systems wit !! 169 a system with only one CPU, say N. If you have a system with more
>> 170 than one CPU, say Y.
>> 171
>> 172 If you say N here, the kernel will run on uni- and multiprocessor
>> 173 machines, but will use only one CPU of a multiprocessor machine. If
>> 174 you say Y here, the kernel will run on many, but not all,
>> 175 uniprocessor machines. On a uniprocessor machine, the kernel
>> 176 will run faster if you say N here.
>> 177
>> 178 People using multiprocessor machines who say Y here should also say
>> 179 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
>> 180 Management" code will be disabled if you say Y here.
172 181
173 if SMP !! 182 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
>> 183 available at <http://www.tldp.org/docs.html#howto>.
174 184
175 config NR_CPUS !! 185 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" <<
179 186
180 config ARC_SMP_HALT_ON_RESET !! 187 config NR_CPUS
181 bool "Enable Halt-on-reset boot mode" !! 188 int "Maximum number of CPUs"
182 help !! 189 depends on SMP
183 In SMP configuration cores can be co !! 190 range 2 32 if SPARC32
184 or they could all start at same time !! 191 range 2 4096 if SPARC64
185 masters are parked until Master kick !! 192 default 32 if SPARC32
186 at designated entry point. For other !! 193 default 4096 if SPARC64
187 entry point and spin wait for Master <<
188 194
189 endif #SMP !! 195 source "kernel/Kconfig.hz"
190 196
191 config ARC_MCIP !! 197 config GENERIC_HWEIGHT
192 bool "ARConnect Multicore IP (MCIP) Su !! 198 bool
193 depends on ISA_ARCV2 !! 199 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,. <<
199 200
200 menuconfig ARC_CACHE !! 201 config GENERIC_CALIBRATE_DELAY
201 bool "Enable Cache Support" !! 202 bool
202 default y 203 default y
203 204
204 if ARC_CACHE !! 205 config ARCH_MAY_HAVE_PC_FDC
>> 206 bool
>> 207 default y
205 208
206 config ARC_CACHE_LINE_SHIFT !! 209 config EMULATED_CMPXCHG
207 int "Cache Line Length (as power of 2) !! 210 bool
208 range 5 7 !! 211 default y if SPARC32
209 default "6" <<
210 help 212 help
211 Starting with ARC700 4.9, Cache line !! 213 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
212 This option specifies "N", with Line !! 214 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 <<
215 215
216 config ARC_HAS_ICACHE !! 216 # Makefile helpers
217 bool "Use Instruction Cache" !! 217 config SPARC32_SMP
>> 218 bool
218 default y 219 default y
>> 220 depends on SPARC32 && SMP
219 221
220 config ARC_HAS_DCACHE !! 222 config SPARC64_SMP
221 bool "Use Data Cache" !! 223 bool
222 default y 224 default y
>> 225 depends on SPARC64 && SMP
223 226
224 config ARC_CACHE_PAGES !! 227 config EARLYFB
225 bool "Per Page Cache Control" !! 228 bool "Support for early boot text console"
226 default y 229 default y
227 depends on ARC_HAS_ICACHE || ARC_HAS_D !! 230 depends on SPARC64
228 help <<
229 This can be used to over-ride the gl <<
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 <<
238 config ARC_HAS_ICCM <<
239 bool "Use ICCM" <<
240 help 231 help
241 Single Cycle RAMS to store Fast Path !! 232 Say Y here to enable a faster early framebuffer boot console.
242 233
243 config ARC_ICCM_SZ !! 234 config SECCOMP
244 int "ICCM Size in KB" !! 235 bool "Enable seccomp to safely compute untrusted bytecode"
245 default "64" !! 236 depends on SPARC64 && PROC_FS
246 depends on ARC_HAS_ICCM !! 237 default y
247 <<
248 config ARC_HAS_DCCM <<
249 bool "Use DCCM" <<
250 help 238 help
251 Single Cycle RAMS to store Fast Path !! 239 This kernel feature is useful for number crunching applications
252 !! 240 that may need to compute untrusted bytecode during their
253 config ARC_DCCM_SZ !! 241 execution. By using pipes or other transports made available to
254 int "DCCM Size in KB" !! 242 the process as file descriptors supporting the read/write
255 default "64" !! 243 syscalls, it's possible to isolate those applications in
256 depends on ARC_HAS_DCCM !! 244 their own address space using seccomp. Once seccomp is
>> 245 enabled via /proc/<pid>/seccomp, it cannot be disabled
>> 246 and the task is only allowed to execute a few safe syscalls
>> 247 defined by each seccomp mode.
257 248
258 config ARC_DCCM_BASE !! 249 If unsure, say Y. Only embedded should say N here.
259 hex "DCCM map address" <<
260 default "0xA0000000" <<
261 depends on ARC_HAS_DCCM <<
262 250
263 choice !! 251 config HOTPLUG_CPU
264 prompt "MMU Version" !! 252 bool "Support for hot-pluggable CPUs"
265 default ARC_MMU_V3 if ISA_ARCOMPACT !! 253 depends on SPARC64 && SMP
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 254 help
272 Introduced with ARC700 4.10: New Fea !! 255 Say Y here to experiment with turning CPUs off and on. CPUs
273 Variable Page size (1k-16k), var JTL !! 256 can be controlled through /sys/devices/system/cpu/cpu#.
274 Shared Address Spaces (SASID) !! 257 Say N if you want to disable CPU hotplug.
275 258
276 config ARC_MMU_V4 !! 259 if SPARC64
277 bool "MMU v4" !! 260 source "drivers/cpufreq/Kconfig"
278 depends on ISA_ARCV2 !! 261 endif
279 262
280 endchoice !! 263 config US3_MC
>> 264 tristate "UltraSPARC-III Memory Controller driver"
>> 265 depends on SPARC64
>> 266 default y
>> 267 help
>> 268 This adds a driver for the UltraSPARC-III memory controller.
>> 269 Loading this driver allows exact mnemonic strings to be
>> 270 printed in the event of a memory error, so that the faulty DIMM
>> 271 on the motherboard can be matched to the error.
>> 272
>> 273 If in doubt, say Y, as this information can be very useful.
>> 274
>> 275 # Global things across all Sun machines.
>> 276 config GENERIC_LOCKBREAK
>> 277 bool
>> 278 default y
>> 279 depends on SPARC64 && SMP && PREEMPTION
>> 280
>> 281 config NUMA
>> 282 bool "NUMA support"
>> 283 depends on SPARC64 && SMP
>> 284
>> 285 config NODES_SHIFT
>> 286 int "Maximum NUMA Nodes (as a power of 2)"
>> 287 range 4 5 if SPARC64
>> 288 default "5"
>> 289 depends on NEED_MULTIPLE_NODES
>> 290 help
>> 291 Specify the maximum number of NUMA Nodes available on the target
>> 292 system. Increases memory reserved to accommodate various tables.
>> 293
>> 294 # Some NUMA nodes have memory ranges that span
>> 295 # other nodes. Even though a pfn is valid and
>> 296 # between a node's start and end pfns, it may not
>> 297 # reside on that node. See memmap_init_zone()
>> 298 # for details.
>> 299 config NODES_SPAN_OTHER_NODES
>> 300 def_bool y
>> 301 depends on NEED_MULTIPLE_NODES
281 302
>> 303 config ARCH_SPARSEMEM_ENABLE
>> 304 def_bool y if SPARC64
>> 305 select SPARSEMEM_VMEMMAP_ENABLE
282 306
283 choice !! 307 config ARCH_SPARSEMEM_DEFAULT
284 prompt "MMU Page Size" !! 308 def_bool y if SPARC64
285 default ARC_PAGE_SIZE_8K <<
286 309
287 config ARC_PAGE_SIZE_8K !! 310 config FORCE_MAX_ZONEORDER
288 bool "8KB" !! 311 int "Maximum zone order"
289 select HAVE_PAGE_SIZE_8KB !! 312 default "13"
290 help 313 help
291 Choose between 8k vs 16k !! 314 The kernel memory allocator divides physically contiguous memory
292 !! 315 blocks into "zones", where each zone is a power of two number of
293 config ARC_PAGE_SIZE_16K !! 316 pages. This option selects the largest power of two that the kernel
294 select HAVE_PAGE_SIZE_16KB !! 317 keeps in the memory allocator. If you need to allocate very large
295 bool "16KB" !! 318 blocks of physically contiguous memory, then you may need to
296 !! 319 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 <<
301 320
302 endchoice !! 321 This config option is actually maximum order plus one. For example,
>> 322 a value of 13 means that the largest free memory block is 2^12 pages.
303 323
304 choice !! 324 if SPARC64
305 prompt "MMU Super Page Size" !! 325 source "kernel/power/Kconfig"
306 depends on ISA_ARCV2 && TRANSPARENT_HU !! 326 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 <<
316 327
317 config PGTABLE_LEVELS !! 328 config SCHED_SMT
318 int "Number of Page table levels" !! 329 bool "SMT (Hyperthreading) scheduler support"
319 default 2 !! 330 depends on SPARC64 && SMP
>> 331 default y
>> 332 help
>> 333 SMT scheduler support improves the CPU scheduler's decision making
>> 334 when dealing with SPARC cpus at a cost of slightly increased overhead
>> 335 in some places. If unsure say N here.
>> 336
>> 337 config SCHED_MC
>> 338 bool "Multi-core scheduler support"
>> 339 depends on SPARC64 && SMP
>> 340 default y
>> 341 help
>> 342 Multi-core scheduler support improves the CPU scheduler's decision
>> 343 making when dealing with multi-core CPU chips at a cost of slightly
>> 344 increased overhead in some places. If unsure say N here.
>> 345
>> 346 config CMDLINE_BOOL
>> 347 bool "Default bootloader kernel arguments"
>> 348 depends on SPARC64
>> 349
>> 350 config CMDLINE
>> 351 string "Initial kernel command string"
>> 352 depends on CMDLINE_BOOL
>> 353 default "console=ttyS0,9600 root=/dev/sda1"
>> 354 help
>> 355 Say Y here if you want to be able to pass default arguments to
>> 356 the kernel. This will be overridden by the bootloader, if you
>> 357 use one (such as SILO). This is most useful if you want to boot
>> 358 a kernel from TFTP, and want default options to be available
>> 359 with having them passed on the command line.
>> 360
>> 361 NOTE: This option WILL override the PROM bootargs setting!
>> 362
>> 363 config SUN_PM
>> 364 bool
>> 365 default y if SPARC32
>> 366 help
>> 367 Enable power management and CPU standby features on supported
>> 368 SPARC platforms.
>> 369
>> 370 config SPARC_LED
>> 371 tristate "Sun4m LED driver"
>> 372 depends on SPARC32
>> 373 help
>> 374 This driver toggles the front-panel LED on sun4m systems
>> 375 in a user-specifiable manner. Its state can be probed
>> 376 by reading /proc/led and its blinking mode can be changed
>> 377 via writes to /proc/led
>> 378
>> 379 config SERIAL_CONSOLE
>> 380 bool
>> 381 depends on SPARC32
>> 382 default y
>> 383 ---help---
>> 384 If you say Y here, it will be possible to use a serial port as the
>> 385 system console (the system console is the device which receives all
>> 386 kernel messages and warnings and which allows logins in single user
>> 387 mode). This could be useful if some terminal or printer is connected
>> 388 to that serial port.
>> 389
>> 390 Even if you say Y here, the currently visible virtual console
>> 391 (/dev/tty0) will still be used as the system console by default, but
>> 392 you can alter that using a kernel command line option such as
>> 393 "console=ttyS1". (Try "man bootparam" or see the documentation of
>> 394 your boot loader (silo) about how to pass options to the kernel at
>> 395 boot time.)
>> 396
>> 397 If you don't have a graphics card installed and you say Y here, the
>> 398 kernel will automatically use the first serial line, /dev/ttyS0, as
>> 399 system console.
>> 400
>> 401 If unsure, say N.
>> 402
>> 403 config SPARC_LEON
>> 404 bool "Sparc Leon processor family"
>> 405 depends on SPARC32
>> 406 select USB_EHCI_BIG_ENDIAN_MMIO
>> 407 select USB_EHCI_BIG_ENDIAN_DESC
>> 408 select USB_UHCI_BIG_ENDIAN_MMIO
>> 409 select USB_UHCI_BIG_ENDIAN_DESC
>> 410 ---help---
>> 411 If you say Y here if you are running on a SPARC-LEON processor.
>> 412 The LEON processor is a synthesizable VHDL model of the
>> 413 SPARC-v8 standard. LEON is part of the GRLIB collection of
>> 414 IP cores that are distributed under GPL. GRLIB can be downloaded
>> 415 from www.gaisler.com. You can download a sparc-linux cross-compilation
>> 416 toolchain at www.gaisler.com.
>> 417
>> 418 if SPARC_LEON
>> 419 menu "U-Boot options"
>> 420
>> 421 config UBOOT_LOAD_ADDR
>> 422 hex "uImage Load Address"
>> 423 default 0x40004000
>> 424 ---help---
>> 425 U-Boot kernel load address, the address in physical address space
>> 426 where u-boot will place the Linux kernel before booting it.
>> 427 This address is normally the base address of main memory + 0x4000.
>> 428
>> 429 config UBOOT_FLASH_ADDR
>> 430 hex "uImage.o Load Address"
>> 431 default 0x00080000
>> 432 ---help---
>> 433 Optional setting only affecting the uImage.o ELF-image used to
>> 434 download the uImage file to the target using a ELF-loader other than
>> 435 U-Boot. It may for example be used to download an uImage to FLASH with
>> 436 the GRMON utility before even starting u-boot.
>> 437
>> 438 config UBOOT_ENTRY_ADDR
>> 439 hex "uImage Entry Address"
>> 440 default 0xf0004000
>> 441 ---help---
>> 442 Do not change this unless you know what you're doing. This is
>> 443 hardcoded by the SPARC32 and LEON port.
320 444
321 config ARC_COMPACT_IRQ_LEVELS !! 445 This is the virtual address u-boot jumps to when booting the Linux
322 depends on ISA_ARCOMPACT !! 446 Kernel.
323 bool "Setup Timer IRQ as high Priority <<
324 # if SMP, LV2 enabled ONLY if ARC impl <<
325 depends on !SMP <<
326 447
327 config ARC_FPU_SAVE_RESTORE !! 448 endmenu
328 bool "Enable FPU state persistence acr !! 449 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 <<
334 450
335 config ARC_CANT_LLSC !! 451 endmenu
336 def_bool n <<
337 452
338 config ARC_HAS_LLSC !! 453 menu "Bus options (PCI etc.)"
339 bool "Insn: LLOCK/SCOND (efficient ato !! 454 config SBUS
>> 455 bool
340 default y 456 default y
341 depends on !ARC_CANT_LLSC <<
342 457
343 config ARC_HAS_SWAPE !! 458 config SBUSCHAR
344 bool "Insn: SWAPE (endian-swap)" !! 459 bool
345 default y 460 default y
346 461
347 if ISA_ARCV2 !! 462 config SUN_LDOMS
348 !! 463 bool "Sun Logical Domains support"
349 config ARC_USE_UNALIGNED_MEM_ACCESS !! 464 depends on SPARC64
350 bool "Enable unaligned access in HW" <<
351 default y <<
352 select HAVE_EFFICIENT_UNALIGNED_ACCESS <<
353 help 465 help
354 The ARC HS architecture supports una !! 466 Say Y here is you want to support virtual devices via
355 which is disabled by default. Enable !! 467 Logical Domains.
356 hardware and use software to use it <<
357 468
358 config ARC_HAS_LL64 !! 469 config PCIC_PCI
359 bool "Insn: 64bit LDD/STD" !! 470 bool
360 help !! 471 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 472 default y
365 473
366 config ARC_HAS_DIV_REM !! 474 config LEON_PCI
367 bool "Insn: div, divu, rem, remu" !! 475 bool
>> 476 depends on PCI && SPARC_LEON
368 default y 477 default y
369 478
370 config ARC_HAS_ACCL_REGS !! 479 config SPARC_GRPCI1
371 bool "Reg Pair ACCL:ACCH (FPU and/or M !! 480 bool "GRPCI Host Bridge Support"
>> 481 depends on LEON_PCI
372 default y 482 default y
373 help 483 help
374 Depending on the configuration, CPU !! 484 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
375 (also referred to as r58:r59). These !! 485 PCI host controller is typically found in GRLIB SPARC32/LEON
376 kernel needs to save/restore per pro !! 486 systems. The driver has one property (all_pci_errors) controlled
377 !! 487 from the bootloader that makes the GRPCI to generate interrupts
378 config ARC_DSP_HANDLED !! 488 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 <<
415 489
416 config ARC_DSP_AGU_USERSPACE !! 490 config SPARC_GRPCI2
417 bool "Support DSP with AGU for userspa !! 491 bool "GRPCI2 Host Bridge Support"
418 select ARC_HAS_ACCL_REGS !! 492 depends on LEON_PCI
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 <<
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 <<
495 config ARC_CURR_IN_REG <<
496 bool "cache current task pointer in gp <<
497 default y 493 default y
498 help 494 help
499 This reserves gp register to point t !! 495 Say Y here to include the GRPCI2 Host Bridge Driver.
500 kernel mode eliding memory access fo <<
501 496
502 !! 497 config SUN_OPENPROMFS
503 config ARC_EMUL_UNALIGNED !! 498 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 499 help
509 This enables misaligned 16 & 32 bit !! 500 If you say Y, the OpenPROM device tree will be available as a
510 Use ONLY-IF-ABS-NECESSARY as it will !! 501 virtual file system, which you can mount to /proc/openprom by "mount
511 potential bugs in code !! 502 -t openpromfs none /proc/openprom".
512 503
513 config HZ !! 504 To compile the /proc/openprom support as a module, choose M here: the
514 int "Timer Frequency" !! 505 module will be called openpromfs.
515 default 100 <<
516 506
517 config ARC_METAWARE_HLINK !! 507 Only choose N if you know in advance that you will not need to modify
518 bool "Support for Metaware debugger as !! 508 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 <<
524 509
525 menuconfig ARC_DBG !! 510 # Makefile helpers
526 bool "ARC debugging" !! 511 config SPARC64_PCI
>> 512 bool
527 default y 513 default y
>> 514 depends on SPARC64 && PCI
528 515
529 if ARC_DBG !! 516 config SPARC64_PCI_MSI
530 !! 517 bool
531 config ARC_DW2_UNWIND <<
532 bool "Enable DWARF specific kernel sta <<
533 default y 518 default y
534 select KALLSYMS !! 519 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 <<
552 520
553 config ARC_BUILTIN_DTB_NAME !! 521 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 <<
558 522
559 endmenu # "ARC Architecture Configuration" !! 523 config COMPAT
>> 524 bool
>> 525 depends on SPARC64
>> 526 default y
>> 527 select COMPAT_BINFMT_ELF
>> 528 select HAVE_UID16
>> 529 select ARCH_WANT_OLD_COMPAT_IPC
>> 530 select COMPAT_OLD_SIGACTION
560 531
561 config ARCH_FORCE_MAX_ORDER !! 532 config SYSVIPC_COMPAT
562 int "Maximum zone order" !! 533 bool
563 default "11" if ARC_HUGEPAGE_16M !! 534 depends on COMPAT && SYSVIPC
564 default "10" !! 535 default y
565 536
566 source "kernel/power/Kconfig" !! 537 source "drivers/sbus/char/Kconfig"
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