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 !! 5 help
6 config ARC !! 6 SPARC is a family of RISC microprocessors designed and marketed by
7 def_bool y !! 7 Sun Microsystems, incorporated. They are very widely found in Sun
8 select ARC_TIMERS !! 8 workstations and clones.
9 select ARCH_HAS_CACHE_LINE_SIZE !! 9
10 select ARCH_HAS_DEBUG_VM_PGTABLE !! 10 Say yes to build a 64-bit kernel - formerly known as sparc64
11 select ARCH_HAS_DMA_PREP_COHERENT !! 11 Say no to build a 32-bit kernel - formerly known as sparc
12 select ARCH_HAS_PTE_SPECIAL !! 12
13 select ARCH_HAS_SETUP_DMA_OPS !! 13 config SPARC
14 select ARCH_HAS_SYNC_DMA_FOR_CPU !! 14 bool
15 select ARCH_HAS_SYNC_DMA_FOR_DEVICE !! 15 default y
16 select ARCH_NEED_CMPXCHG_1_EMU !! 16 select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI
17 select ARCH_SUPPORTS_ATOMIC_RMW if ARC !! 17 select ARCH_MIGHT_HAVE_PC_SERIO
18 select ARCH_32BIT_OFF_T !! 18 select DMA_OPS
19 select BUILDTIME_TABLE_SORT !! 19 select OF
20 select CLONE_BACKWARDS !! 20 select OF_PROMTREE
21 select COMMON_CLK !! 21 select HAVE_ASM_MODVERSIONS
22 select DMA_DIRECT_REMAP !! 22 select HAVE_IDE
23 select GENERIC_ATOMIC64 if !ISA_ARCV2 !! 23 select HAVE_OPROFILE
24 # for now, we don't need GENERIC_IRQ_P !! 24 select HAVE_ARCH_KGDB if !SMP || SPARC64
>> 25 select HAVE_ARCH_TRACEHOOK
>> 26 select HAVE_EXIT_THREAD
>> 27 select HAVE_PCI
>> 28 select SYSCTL_EXCEPTION_TRACE
>> 29 select RTC_CLASS
>> 30 select RTC_DRV_M48T59
>> 31 select RTC_SYSTOHC
>> 32 select HAVE_ARCH_JUMP_LABEL if SPARC64
25 select GENERIC_IRQ_SHOW 33 select GENERIC_IRQ_SHOW
>> 34 select ARCH_WANT_IPC_PARSE_VERSION
26 select GENERIC_PCI_IOMAP 35 select GENERIC_PCI_IOMAP
27 select GENERIC_PENDING_IRQ if SMP !! 36 select HAVE_NMI_WATCHDOG if SPARC64
28 select GENERIC_SCHED_CLOCK !! 37 select HAVE_CBPF_JIT if SPARC32
>> 38 select HAVE_EBPF_JIT if SPARC64
>> 39 select HAVE_DEBUG_BUGVERBOSE
29 select GENERIC_SMP_IDLE_THREAD 40 select GENERIC_SMP_IDLE_THREAD
30 select GENERIC_IOREMAP !! 41 select GENERIC_CLOCKEVENTS
31 select GENERIC_STRNCPY_FROM_USER if MM !! 42 select GENERIC_STRNCPY_FROM_USER
32 select GENERIC_STRNLEN_USER if MMU !! 43 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 44 select MODULES_USE_ELF_RELA
50 select OF <<
51 select OF_EARLY_FLATTREE <<
52 select PCI_SYSCALL if PCI 45 select PCI_SYSCALL if PCI
53 select HAVE_ARCH_JUMP_LABEL if ISA_ARC !! 46 select ODD_RT_SIGACTION
54 select TRACE_IRQFLAGS_SUPPORT !! 47 select OLD_SIGSUSPEND
55 select HAVE_EBPF_JIT if ISA_ARCV2 !! 48 select CPU_NO_EFFICIENT_FFS
>> 49 select LOCKDEP_SMALL if LOCKDEP
>> 50 select NEED_DMA_MAP_STATE
>> 51 select NEED_SG_DMA_LENGTH
56 52
57 config LOCKDEP_SUPPORT !! 53 config SPARC32
58 def_bool y !! 54 def_bool !64BIT
>> 55 select ARCH_32BIT_OFF_T
>> 56 select ARCH_HAS_SYNC_DMA_FOR_CPU
>> 57 select GENERIC_ATOMIC64
>> 58 select CLZ_TAB
>> 59 select HAVE_UID16
>> 60 select OLD_SIGACTION
>> 61
>> 62 config SPARC64
>> 63 def_bool 64BIT
>> 64 select HAVE_FUNCTION_TRACER
>> 65 select HAVE_FUNCTION_GRAPH_TRACER
>> 66 select HAVE_KRETPROBES
>> 67 select HAVE_KPROBES
>> 68 select MMU_GATHER_RCU_TABLE_FREE if SMP
>> 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_TIF_NOHZ
>> 75 select HAVE_DEBUG_KMEMLEAK
>> 76 select IOMMU_HELPER
>> 77 select SPARSE_IRQ
>> 78 select RTC_DRV_CMOS
>> 79 select RTC_DRV_BQ4802
>> 80 select RTC_DRV_SUN4V
>> 81 select RTC_DRV_STARFIRE
>> 82 select HAVE_PERF_EVENTS
>> 83 select PERF_USE_VMALLOC
>> 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_PROC_KCORE_TEXT
61 def_bool y 99 def_bool y
62 100
63 config GENERIC_CSUM !! 101 config CPU_BIG_ENDIAN
64 def_bool y 102 def_bool y
65 103
66 config ARCH_FLATMEM_ENABLE !! 104 config ARCH_ATU
67 def_bool y !! 105 bool
>> 106 default y if SPARC64
68 107
69 config MMU !! 108 config STACKTRACE_SUPPORT
70 def_bool y !! 109 bool
>> 110 default y if SPARC64
71 111
72 config NO_IOPORT_MAP !! 112 config LOCKDEP_SUPPORT
73 def_bool y !! 113 bool
>> 114 default y if SPARC64
74 115
75 config GENERIC_CALIBRATE_DELAY !! 116 config ARCH_HIBERNATION_POSSIBLE
76 def_bool y !! 117 def_bool y if SPARC64
77 118
78 config GENERIC_HWEIGHT !! 119 config AUDIT_ARCH
79 def_bool y !! 120 bool
>> 121 default y
80 122
81 config STACKTRACE_SUPPORT !! 123 config HAVE_SETUP_PER_CPU_AREA
82 def_bool y !! 124 def_bool y if SPARC64
83 select STACKTRACE <<
84 125
85 menu "ARC Architecture Configuration" !! 126 config NEED_PER_CPU_EMBED_FIRST_CHUNK
>> 127 def_bool y if SPARC64
86 128
87 menu "ARC Platform/SoC/Board" !! 129 config NEED_PER_CPU_PAGE_FIRST_CHUNK
>> 130 def_bool y if SPARC64
88 131
89 source "arch/arc/plat-tb10x/Kconfig" !! 132 config MMU
90 source "arch/arc/plat-axs10x/Kconfig" !! 133 bool
91 source "arch/arc/plat-hsdk/Kconfig" !! 134 default y
92 135
93 endmenu !! 136 config HIGHMEM
>> 137 bool
>> 138 default y if SPARC32
94 139
95 choice !! 140 config ZONE_DMA
96 prompt "ARC Instruction Set" !! 141 bool
97 default ISA_ARCV2 !! 142 default y if SPARC32
>> 143
>> 144 config GENERIC_ISA_DMA
>> 145 bool
>> 146 default y if SPARC32
98 147
99 config ISA_ARCOMPACT !! 148 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
100 bool "ARCompact ISA" !! 149 def_bool y if SPARC64
101 select CPU_NO_EFFICIENT_FFS <<
102 help <<
103 The original ARC ISA of ARC600/700 c <<
104 150
105 config ISA_ARCV2 !! 151 config PGTABLE_LEVELS
106 bool "ARC ISA v2" !! 152 default 4 if 64BIT
107 select ARC_TIMERS_64BIT !! 153 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 <<
161 154
162 config CPU_BIG_ENDIAN !! 155 config ARCH_SUPPORTS_UPROBES
163 bool "Enable Big Endian Mode" !! 156 def_bool y if SPARC64
164 help !! 157
165 Build kernel for Big Endian Mode of !! 158 menu "Processor type and features"
166 159
167 config SMP 160 config SMP
168 bool "Symmetric Multi-Processing" !! 161 bool "Symmetric multi-processing support"
169 select ARC_MCIP if ISA_ARCV2 <<
170 help 162 help
171 This enables support for systems wit !! 163 This enables support for systems with more than one CPU. If you have
>> 164 a system with only one CPU, say N. If you have a system with more
>> 165 than one CPU, say Y.
>> 166
>> 167 If you say N here, the kernel will run on uni- and multiprocessor
>> 168 machines, but will use only one CPU of a multiprocessor machine. If
>> 169 you say Y here, the kernel will run on many, but not all,
>> 170 uniprocessor machines. On a uniprocessor machine, the kernel
>> 171 will run faster if you say N here.
>> 172
>> 173 People using multiprocessor machines who say Y here should also say
>> 174 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
>> 175 Management" code will be disabled if you say Y here.
172 176
173 if SMP !! 177 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
>> 178 available at <http://www.tldp.org/docs.html#howto>.
174 179
175 config NR_CPUS !! 180 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" <<
179 181
180 config ARC_SMP_HALT_ON_RESET !! 182 config NR_CPUS
181 bool "Enable Halt-on-reset boot mode" !! 183 int "Maximum number of CPUs"
182 help !! 184 depends on SMP
183 In SMP configuration cores can be co !! 185 range 2 32 if SPARC32
184 or they could all start at same time !! 186 range 2 4096 if SPARC64
185 masters are parked until Master kick !! 187 default 32 if SPARC32
186 at designated entry point. For other !! 188 default 4096 if SPARC64
187 entry point and spin wait for Master <<
188 189
189 endif #SMP !! 190 source "kernel/Kconfig.hz"
190 191
191 config ARC_MCIP !! 192 config GENERIC_HWEIGHT
192 bool "ARConnect Multicore IP (MCIP) Su !! 193 bool
193 depends on ISA_ARCV2 !! 194 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,. <<
199 195
200 menuconfig ARC_CACHE !! 196 config GENERIC_CALIBRATE_DELAY
201 bool "Enable Cache Support" !! 197 bool
202 default y 198 default y
203 199
204 if ARC_CACHE !! 200 config ARCH_MAY_HAVE_PC_FDC
>> 201 bool
>> 202 default y
205 203
206 config ARC_CACHE_LINE_SHIFT !! 204 config EMULATED_CMPXCHG
207 int "Cache Line Length (as power of 2) !! 205 bool
208 range 5 7 !! 206 default y if SPARC32
209 default "6" <<
210 help 207 help
211 Starting with ARC700 4.9, Cache line !! 208 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
212 This option specifies "N", with Line !! 209 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 <<
215 210
216 config ARC_HAS_ICACHE !! 211 # Makefile helpers
217 bool "Use Instruction Cache" !! 212 config SPARC32_SMP
>> 213 bool
218 default y 214 default y
>> 215 depends on SPARC32 && SMP
219 216
220 config ARC_HAS_DCACHE !! 217 config SPARC64_SMP
221 bool "Use Data Cache" !! 218 bool
222 default y 219 default y
>> 220 depends on SPARC64 && SMP
223 221
224 config ARC_CACHE_PAGES !! 222 config EARLYFB
225 bool "Per Page Cache Control" !! 223 bool "Support for early boot text console"
226 default y 224 default y
227 depends on ARC_HAS_ICACHE || ARC_HAS_D !! 225 depends on SPARC64
228 help 226 help
229 This can be used to over-ride the gl !! 227 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 <<
237 228
238 config ARC_HAS_ICCM !! 229 config SECCOMP
239 bool "Use ICCM" !! 230 bool "Enable seccomp to safely compute untrusted bytecode"
>> 231 depends on SPARC64 && PROC_FS
>> 232 default y
240 help 233 help
241 Single Cycle RAMS to store Fast Path !! 234 This kernel feature is useful for number crunching applications
>> 235 that may need to compute untrusted bytecode during their
>> 236 execution. By using pipes or other transports made available to
>> 237 the process as file descriptors supporting the read/write
>> 238 syscalls, it's possible to isolate those applications in
>> 239 their own address space using seccomp. Once seccomp is
>> 240 enabled via /proc/<pid>/seccomp, it cannot be disabled
>> 241 and the task is only allowed to execute a few safe syscalls
>> 242 defined by each seccomp mode.
242 243
243 config ARC_ICCM_SZ !! 244 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 <<
247 245
248 config ARC_HAS_DCCM !! 246 config HOTPLUG_CPU
249 bool "Use DCCM" !! 247 bool "Support for hot-pluggable CPUs"
>> 248 depends on SPARC64 && SMP
250 help 249 help
251 Single Cycle RAMS to store Fast Path !! 250 Say Y here to experiment with turning CPUs off and on. CPUs
252 !! 251 can be controlled through /sys/devices/system/cpu/cpu#.
253 config ARC_DCCM_SZ !! 252 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 <<
262 253
263 choice !! 254 if SPARC64
264 prompt "MMU Version" !! 255 source "drivers/cpufreq/Kconfig"
265 default ARC_MMU_V3 if ISA_ARCOMPACT !! 256 endif
266 default ARC_MMU_V4 if ISA_ARCV2 <<
267 257
268 config ARC_MMU_V3 !! 258 config US3_MC
269 bool "MMU v3" !! 259 tristate "UltraSPARC-III Memory Controller driver"
270 depends on ISA_ARCOMPACT !! 260 depends on SPARC64
>> 261 default y
271 help 262 help
272 Introduced with ARC700 4.10: New Fea !! 263 This adds a driver for the UltraSPARC-III memory controller.
273 Variable Page size (1k-16k), var JTL !! 264 Loading this driver allows exact mnemonic strings to be
274 Shared Address Spaces (SASID) !! 265 printed in the event of a memory error, so that the faulty DIMM
>> 266 on the motherboard can be matched to the error.
275 267
276 config ARC_MMU_V4 !! 268 If in doubt, say Y, as this information can be very useful.
277 bool "MMU v4" <<
278 depends on ISA_ARCV2 <<
279 <<
280 endchoice <<
281 269
>> 270 # Global things across all Sun machines.
>> 271 config GENERIC_LOCKBREAK
>> 272 bool
>> 273 default y
>> 274 depends on SPARC64 && SMP && PREEMPTION
282 275
283 choice !! 276 config NUMA
284 prompt "MMU Page Size" !! 277 bool "NUMA support"
285 default ARC_PAGE_SIZE_8K !! 278 depends on SPARC64 && SMP
286 279
287 config ARC_PAGE_SIZE_8K !! 280 config NODES_SHIFT
288 bool "8KB" !! 281 int "Maximum NUMA Nodes (as a power of 2)"
289 select HAVE_PAGE_SIZE_8KB !! 282 range 4 5 if SPARC64
>> 283 default "5"
>> 284 depends on NEED_MULTIPLE_NODES
290 help 285 help
291 Choose between 8k vs 16k !! 286 Specify the maximum number of NUMA Nodes available on the target
>> 287 system. Increases memory reserved to accommodate various tables.
292 288
293 config ARC_PAGE_SIZE_16K !! 289 config ARCH_SPARSEMEM_ENABLE
294 select HAVE_PAGE_SIZE_16KB !! 290 def_bool y if SPARC64
295 bool "16KB" !! 291 select SPARSEMEM_VMEMMAP_ENABLE
296 292
297 config ARC_PAGE_SIZE_4K !! 293 config ARCH_SPARSEMEM_DEFAULT
298 bool "4KB" !! 294 def_bool y if SPARC64
299 select HAVE_PAGE_SIZE_4KB <<
300 depends on ARC_MMU_V3 || ARC_MMU_V4 <<
301 295
302 endchoice !! 296 config FORCE_MAX_ZONEORDER
303 !! 297 int "Maximum zone order"
304 choice !! 298 default "13"
305 prompt "MMU Super Page Size" !! 299 help
306 depends on ISA_ARCV2 && TRANSPARENT_HU !! 300 The kernel memory allocator divides physically contiguous memory
307 default ARC_HUGEPAGE_2M !! 301 blocks into "zones", where each zone is a power of two number of
308 !! 302 pages. This option selects the largest power of two that the kernel
309 config ARC_HUGEPAGE_2M !! 303 keeps in the memory allocator. If you need to allocate very large
310 bool "2MB" !! 304 blocks of physically contiguous memory, then you may need to
>> 305 increase this value.
311 306
312 config ARC_HUGEPAGE_16M !! 307 This config option is actually maximum order plus one. For example,
313 bool "16MB" !! 308 a value of 13 means that the largest free memory block is 2^12 pages.
314 309
315 endchoice !! 310 if SPARC64
>> 311 source "kernel/power/Kconfig"
>> 312 endif
316 313
317 config PGTABLE_LEVELS !! 314 config SCHED_SMT
318 int "Number of Page table levels" !! 315 bool "SMT (Hyperthreading) scheduler support"
319 default 2 !! 316 depends on SPARC64 && SMP
>> 317 default y
>> 318 help
>> 319 SMT scheduler support improves the CPU scheduler's decision making
>> 320 when dealing with SPARC cpus at a cost of slightly increased overhead
>> 321 in some places. If unsure say N here.
>> 322
>> 323 config SCHED_MC
>> 324 bool "Multi-core scheduler support"
>> 325 depends on SPARC64 && SMP
>> 326 default y
>> 327 help
>> 328 Multi-core scheduler support improves the CPU scheduler's decision
>> 329 making when dealing with multi-core CPU chips at a cost of slightly
>> 330 increased overhead in some places. If unsure say N here.
>> 331
>> 332 config CMDLINE_BOOL
>> 333 bool "Default bootloader kernel arguments"
>> 334 depends on SPARC64
>> 335
>> 336 config CMDLINE
>> 337 string "Initial kernel command string"
>> 338 depends on CMDLINE_BOOL
>> 339 default "console=ttyS0,9600 root=/dev/sda1"
>> 340 help
>> 341 Say Y here if you want to be able to pass default arguments to
>> 342 the kernel. This will be overridden by the bootloader, if you
>> 343 use one (such as SILO). This is most useful if you want to boot
>> 344 a kernel from TFTP, and want default options to be available
>> 345 with having them passed on the command line.
>> 346
>> 347 NOTE: This option WILL override the PROM bootargs setting!
>> 348
>> 349 config SUN_PM
>> 350 bool
>> 351 default y if SPARC32
>> 352 help
>> 353 Enable power management and CPU standby features on supported
>> 354 SPARC platforms.
>> 355
>> 356 config SPARC_LED
>> 357 tristate "Sun4m LED driver"
>> 358 depends on SPARC32
>> 359 help
>> 360 This driver toggles the front-panel LED on sun4m systems
>> 361 in a user-specifiable manner. Its state can be probed
>> 362 by reading /proc/led and its blinking mode can be changed
>> 363 via writes to /proc/led
>> 364
>> 365 config SERIAL_CONSOLE
>> 366 bool
>> 367 depends on SPARC32
>> 368 default y
>> 369 help
>> 370 If you say Y here, it will be possible to use a serial port as the
>> 371 system console (the system console is the device which receives all
>> 372 kernel messages and warnings and which allows logins in single user
>> 373 mode). This could be useful if some terminal or printer is connected
>> 374 to that serial port.
>> 375
>> 376 Even if you say Y here, the currently visible virtual console
>> 377 (/dev/tty0) will still be used as the system console by default, but
>> 378 you can alter that using a kernel command line option such as
>> 379 "console=ttyS1". (Try "man bootparam" or see the documentation of
>> 380 your boot loader (silo) about how to pass options to the kernel at
>> 381 boot time.)
>> 382
>> 383 If you don't have a graphics card installed and you say Y here, the
>> 384 kernel will automatically use the first serial line, /dev/ttyS0, as
>> 385 system console.
>> 386
>> 387 If unsure, say N.
>> 388
>> 389 config SPARC_LEON
>> 390 bool "Sparc Leon processor family"
>> 391 depends on SPARC32
>> 392 select USB_EHCI_BIG_ENDIAN_MMIO
>> 393 select USB_EHCI_BIG_ENDIAN_DESC
>> 394 select USB_UHCI_BIG_ENDIAN_MMIO
>> 395 select USB_UHCI_BIG_ENDIAN_DESC
>> 396 help
>> 397 If you say Y here if you are running on a SPARC-LEON processor.
>> 398 The LEON processor is a synthesizable VHDL model of the
>> 399 SPARC-v8 standard. LEON is part of the GRLIB collection of
>> 400 IP cores that are distributed under GPL. GRLIB can be downloaded
>> 401 from www.gaisler.com. You can download a sparc-linux cross-compilation
>> 402 toolchain at www.gaisler.com.
>> 403
>> 404 if SPARC_LEON
>> 405 menu "U-Boot options"
>> 406
>> 407 config UBOOT_LOAD_ADDR
>> 408 hex "uImage Load Address"
>> 409 default 0x40004000
>> 410 help
>> 411 U-Boot kernel load address, the address in physical address space
>> 412 where u-boot will place the Linux kernel before booting it.
>> 413 This address is normally the base address of main memory + 0x4000.
>> 414
>> 415 config UBOOT_FLASH_ADDR
>> 416 hex "uImage.o Load Address"
>> 417 default 0x00080000
>> 418 help
>> 419 Optional setting only affecting the uImage.o ELF-image used to
>> 420 download the uImage file to the target using a ELF-loader other than
>> 421 U-Boot. It may for example be used to download an uImage to FLASH with
>> 422 the GRMON utility before even starting u-boot.
>> 423
>> 424 config UBOOT_ENTRY_ADDR
>> 425 hex "uImage Entry Address"
>> 426 default 0xf0004000
>> 427 help
>> 428 Do not change this unless you know what you're doing. This is
>> 429 hardcoded by the SPARC32 and LEON port.
320 430
321 config ARC_COMPACT_IRQ_LEVELS !! 431 This is the virtual address u-boot jumps to when booting the Linux
322 depends on ISA_ARCOMPACT !! 432 Kernel.
323 bool "Setup Timer IRQ as high Priority <<
324 # if SMP, LV2 enabled ONLY if ARC impl <<
325 depends on !SMP <<
326 433
327 config ARC_FPU_SAVE_RESTORE !! 434 endmenu
328 bool "Enable FPU state persistence acr !! 435 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 <<
334 436
335 config ARC_CANT_LLSC !! 437 endmenu
336 def_bool n <<
337 438
338 config ARC_HAS_LLSC !! 439 menu "Bus options (PCI etc.)"
339 bool "Insn: LLOCK/SCOND (efficient ato !! 440 config SBUS
>> 441 bool
340 default y 442 default y
341 depends on !ARC_CANT_LLSC <<
342 443
343 config ARC_HAS_SWAPE !! 444 config SBUSCHAR
344 bool "Insn: SWAPE (endian-swap)" !! 445 bool
345 default y 446 default y
346 447
347 if ISA_ARCV2 !! 448 config SUN_LDOMS
348 !! 449 bool "Sun Logical Domains support"
349 config ARC_USE_UNALIGNED_MEM_ACCESS !! 450 depends on SPARC64
350 bool "Enable unaligned access in HW" <<
351 default y <<
352 select HAVE_EFFICIENT_UNALIGNED_ACCESS <<
353 help 451 help
354 The ARC HS architecture supports una !! 452 Say Y here is you want to support virtual devices via
355 which is disabled by default. Enable !! 453 Logical Domains.
356 hardware and use software to use it <<
357 454
358 config ARC_HAS_LL64 !! 455 config PCIC_PCI
359 bool "Insn: 64bit LDD/STD" !! 456 bool
360 help !! 457 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 458 default y
365 459
366 config ARC_HAS_DIV_REM !! 460 config LEON_PCI
367 bool "Insn: div, divu, rem, remu" !! 461 bool
>> 462 depends on PCI && SPARC_LEON
368 default y 463 default y
369 464
370 config ARC_HAS_ACCL_REGS !! 465 config SPARC_GRPCI1
371 bool "Reg Pair ACCL:ACCH (FPU and/or M !! 466 bool "GRPCI Host Bridge Support"
>> 467 depends on LEON_PCI
372 default y 468 default y
373 help 469 help
374 Depending on the configuration, CPU !! 470 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
375 (also referred to as r58:r59). These !! 471 PCI host controller is typically found in GRLIB SPARC32/LEON
376 kernel needs to save/restore per pro !! 472 systems. The driver has one property (all_pci_errors) controlled
377 !! 473 from the bootloader that makes the GRPCI to generate interrupts
378 config ARC_DSP_HANDLED !! 474 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 <<
425 475
426 config ARC_IRQ_NO_AUTOSAVE !! 476 config SPARC_GRPCI2
427 bool "Disable hardware autosave regfil !! 477 bool "GRPCI2 Host Bridge Support"
428 default n !! 478 depends on LEON_PCI
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 479 default y
498 help 480 help
499 This reserves gp register to point t !! 481 Say Y here to include the GRPCI2 Host Bridge Driver.
500 kernel mode eliding memory access fo <<
501 <<
502 482
503 config ARC_EMUL_UNALIGNED !! 483 config SUN_OPENPROMFS
504 bool "Emulate unaligned memory access !! 484 tristate "Openprom tree appears in /proc/openprom"
505 select SYSCTL_ARCH_UNALIGN_NO_WARN <<
506 select SYSCTL_ARCH_UNALIGN_ALLOW <<
507 depends on ISA_ARCOMPACT <<
508 help 485 help
509 This enables misaligned 16 & 32 bit !! 486 If you say Y, the OpenPROM device tree will be available as a
510 Use ONLY-IF-ABS-NECESSARY as it will !! 487 virtual file system, which you can mount to /proc/openprom by "mount
511 potential bugs in code !! 488 -t openpromfs none /proc/openprom".
512 489
513 config HZ !! 490 To compile the /proc/openprom support as a module, choose M here: the
514 int "Timer Frequency" !! 491 module will be called openpromfs.
515 default 100 <<
516 492
517 config ARC_METAWARE_HLINK !! 493 Only choose N if you know in advance that you will not need to modify
518 bool "Support for Metaware debugger as !! 494 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 <<
524 495
525 menuconfig ARC_DBG !! 496 # Makefile helpers
526 bool "ARC debugging" !! 497 config SPARC64_PCI
>> 498 bool
527 default y 499 default y
>> 500 depends on SPARC64 && PCI
528 501
529 if ARC_DBG !! 502 config SPARC64_PCI_MSI
530 !! 503 bool
531 config ARC_DW2_UNWIND <<
532 bool "Enable DWARF specific kernel sta <<
533 default y 504 default y
534 select KALLSYMS !! 505 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 <<
543 506
544 config ARC_DBG_JUMP_LABEL !! 507 endmenu
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 <<
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 <<
558 508
559 endmenu # "ARC Architecture Configuration" !! 509 config COMPAT
>> 510 bool
>> 511 depends on SPARC64
>> 512 default y
>> 513 select COMPAT_BINFMT_ELF
>> 514 select HAVE_UID16
>> 515 select ARCH_WANT_OLD_COMPAT_IPC
>> 516 select COMPAT_OLD_SIGACTION
560 517
561 config ARCH_FORCE_MAX_ORDER !! 518 config SYSVIPC_COMPAT
562 int "Maximum zone order" !! 519 bool
563 default "11" if ARC_HUGEPAGE_16M !! 520 depends on COMPAT && SYSVIPC
564 default "10" !! 521 default y
565 522
566 source "kernel/power/Kconfig" !! 523 source "drivers/sbus/char/Kconfig"
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