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_ARCH_KGDB if !SMP || SPARC64
24 # for now, we don't need GENERIC_IRQ_P !! 24 select HAVE_ARCH_TRACEHOOK
>> 25 select HAVE_ARCH_SECCOMP if SPARC64
>> 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_STRNCPY_FROM_USER
31 select GENERIC_STRNCPY_FROM_USER if MM !! 42 select GENERIC_STRNLEN_USER
32 select GENERIC_STRNLEN_USER if MMU <<
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 PCI_MSI_ARCH_FALLBACKS if PCI_MSI
54 select TRACE_IRQFLAGS_SUPPORT !! 46 select ODD_RT_SIGACTION
55 select HAVE_EBPF_JIT if ISA_ARCV2 !! 47 select OLD_SIGSUSPEND
>> 48 select CPU_NO_EFFICIENT_FFS
>> 49 select LOCKDEP_SMALL if LOCKDEP
>> 50 select NEED_DMA_MAP_STATE
>> 51 select NEED_SG_DMA_LENGTH
>> 52 select SET_FS
56 53
57 config LOCKDEP_SUPPORT !! 54 config SPARC32
58 def_bool y !! 55 def_bool !64BIT
>> 56 select ARCH_32BIT_OFF_T
>> 57 select ARCH_HAS_SYNC_DMA_FOR_CPU
>> 58 select GENERIC_ATOMIC64
>> 59 select CLZ_TAB
>> 60 select HAVE_UID16
>> 61 select OLD_SIGACTION
>> 62
>> 63 config SPARC64
>> 64 def_bool 64BIT
>> 65 select HAVE_FUNCTION_TRACER
>> 66 select HAVE_FUNCTION_GRAPH_TRACER
>> 67 select HAVE_KRETPROBES
>> 68 select HAVE_KPROBES
>> 69 select MMU_GATHER_RCU_TABLE_FREE if SMP
>> 70 select HAVE_ARCH_TRANSPARENT_HUGEPAGE
>> 71 select HAVE_DYNAMIC_FTRACE
>> 72 select HAVE_FTRACE_MCOUNT_RECORD
>> 73 select HAVE_SYSCALL_TRACEPOINTS
>> 74 select HAVE_CONTEXT_TRACKING
>> 75 select HAVE_TIF_NOHZ
>> 76 select HAVE_DEBUG_KMEMLEAK
>> 77 select IOMMU_HELPER
>> 78 select SPARSE_IRQ
>> 79 select RTC_DRV_CMOS
>> 80 select RTC_DRV_BQ4802
>> 81 select RTC_DRV_SUN4V
>> 82 select RTC_DRV_STARFIRE
>> 83 select HAVE_PERF_EVENTS
>> 84 select PERF_USE_VMALLOC
>> 85 select ARCH_HAVE_NMI_SAFE_CMPXCHG
>> 86 select HAVE_C_RECORDMCOUNT
>> 87 select HAVE_ARCH_AUDITSYSCALL
>> 88 select ARCH_SUPPORTS_ATOMIC_RMW
>> 89 select ARCH_SUPPORTS_DEBUG_PAGEALLOC
>> 90 select HAVE_NMI
>> 91 select HAVE_REGS_AND_STACK_ACCESS_API
>> 92 select ARCH_USE_QUEUED_RWLOCKS
>> 93 select ARCH_USE_QUEUED_SPINLOCKS
>> 94 select GENERIC_TIME_VSYSCALL
>> 95 select ARCH_CLOCKSOURCE_DATA
>> 96 select ARCH_HAS_PTE_SPECIAL
>> 97 select PCI_DOMAINS if PCI
>> 98 select ARCH_HAS_GIGANTIC_PAGE
>> 99 select HAVE_SOFTIRQ_ON_OWN_STACK
59 100
60 config SCHED_OMIT_FRAME_POINTER !! 101 config ARCH_PROC_KCORE_TEXT
61 def_bool y 102 def_bool y
62 103
63 config GENERIC_CSUM !! 104 config CPU_BIG_ENDIAN
64 def_bool y 105 def_bool y
65 106
66 config ARCH_FLATMEM_ENABLE !! 107 config ARCH_ATU
67 def_bool y !! 108 bool
>> 109 default y if SPARC64
68 110
69 config MMU !! 111 config STACKTRACE_SUPPORT
70 def_bool y !! 112 bool
>> 113 default y if SPARC64
71 114
72 config NO_IOPORT_MAP !! 115 config LOCKDEP_SUPPORT
73 def_bool y !! 116 bool
>> 117 default y if SPARC64
74 118
75 config GENERIC_CALIBRATE_DELAY !! 119 config ARCH_HIBERNATION_POSSIBLE
76 def_bool y !! 120 def_bool y if SPARC64
77 121
78 config GENERIC_HWEIGHT !! 122 config AUDIT_ARCH
79 def_bool y !! 123 bool
>> 124 default y
80 125
81 config STACKTRACE_SUPPORT !! 126 config HAVE_SETUP_PER_CPU_AREA
82 def_bool y !! 127 def_bool y if SPARC64
83 select STACKTRACE <<
84 128
85 menu "ARC Architecture Configuration" !! 129 config NEED_PER_CPU_EMBED_FIRST_CHUNK
>> 130 def_bool y if SPARC64
86 131
87 menu "ARC Platform/SoC/Board" !! 132 config NEED_PER_CPU_PAGE_FIRST_CHUNK
>> 133 def_bool y if SPARC64
88 134
89 source "arch/arc/plat-tb10x/Kconfig" !! 135 config MMU
90 source "arch/arc/plat-axs10x/Kconfig" !! 136 bool
91 source "arch/arc/plat-hsdk/Kconfig" !! 137 default y
92 138
93 endmenu !! 139 config HIGHMEM
>> 140 bool
>> 141 default y if SPARC32
>> 142 select KMAP_LOCAL
94 143
95 choice !! 144 config ZONE_DMA
96 prompt "ARC Instruction Set" !! 145 bool
97 default ISA_ARCV2 !! 146 default y if SPARC32
>> 147
>> 148 config GENERIC_ISA_DMA
>> 149 bool
>> 150 default y if SPARC32
98 151
99 config ISA_ARCOMPACT !! 152 config PGTABLE_LEVELS
100 bool "ARCompact ISA" !! 153 default 4 if 64BIT
101 select CPU_NO_EFFICIENT_FFS !! 154 default 3
102 help <<
103 The original ARC ISA of ARC600/700 c <<
104 155
105 config ISA_ARCV2 !! 156 config ARCH_SUPPORTS_UPROBES
106 bool "ARC ISA v2" !! 157 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 <<
161 158
162 config CPU_BIG_ENDIAN !! 159 menu "Processor type and features"
163 bool "Enable Big Endian Mode" <<
164 help <<
165 Build kernel for Big Endian Mode of <<
166 160
167 config SMP 161 config SMP
168 bool "Symmetric Multi-Processing" !! 162 bool "Symmetric multi-processing support"
169 select ARC_MCIP if ISA_ARCV2 <<
170 help 163 help
171 This enables support for systems wit !! 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.
172 177
173 if SMP !! 178 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
>> 179 available at <https://www.tldp.org/docs.html#howto>.
174 180
175 config NR_CPUS !! 181 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" <<
179 182
180 config ARC_SMP_HALT_ON_RESET !! 183 config NR_CPUS
181 bool "Enable Halt-on-reset boot mode" !! 184 int "Maximum number of CPUs"
182 help !! 185 depends on SMP
183 In SMP configuration cores can be co !! 186 range 2 32 if SPARC32
184 or they could all start at same time !! 187 range 2 4096 if SPARC64
185 masters are parked until Master kick !! 188 default 32 if SPARC32
186 at designated entry point. For other !! 189 default 4096 if SPARC64
187 entry point and spin wait for Master <<
188 190
189 endif #SMP !! 191 source "kernel/Kconfig.hz"
190 192
191 config ARC_MCIP !! 193 config GENERIC_HWEIGHT
192 bool "ARConnect Multicore IP (MCIP) Su !! 194 bool
193 depends on ISA_ARCV2 !! 195 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,. <<
199 196
200 menuconfig ARC_CACHE !! 197 config GENERIC_CALIBRATE_DELAY
201 bool "Enable Cache Support" !! 198 bool
202 default y 199 default y
203 200
204 if ARC_CACHE !! 201 config ARCH_MAY_HAVE_PC_FDC
>> 202 bool
>> 203 default y
205 204
206 config ARC_CACHE_LINE_SHIFT !! 205 config EMULATED_CMPXCHG
207 int "Cache Line Length (as power of 2) !! 206 bool
208 range 5 7 !! 207 default y if SPARC32
209 default "6" <<
210 help 208 help
211 Starting with ARC700 4.9, Cache line !! 209 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
212 This option specifies "N", with Line !! 210 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 <<
215 211
216 config ARC_HAS_ICACHE !! 212 # Makefile helpers
217 bool "Use Instruction Cache" !! 213 config SPARC32_SMP
>> 214 bool
218 default y 215 default y
>> 216 depends on SPARC32 && SMP
219 217
220 config ARC_HAS_DCACHE !! 218 config SPARC64_SMP
221 bool "Use Data Cache" !! 219 bool
222 default y 220 default y
>> 221 depends on SPARC64 && SMP
223 222
224 config ARC_CACHE_PAGES !! 223 config EARLYFB
225 bool "Per Page Cache Control" !! 224 bool "Support for early boot text console"
226 default y 225 default y
227 depends on ARC_HAS_ICACHE || ARC_HAS_D !! 226 depends on SPARC64
228 help 227 help
229 This can be used to over-ride the gl !! 228 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 <<
237 229
238 config ARC_HAS_ICCM !! 230 config HOTPLUG_CPU
239 bool "Use ICCM" !! 231 bool "Support for hot-pluggable CPUs"
>> 232 depends on SPARC64 && SMP
240 help 233 help
241 Single Cycle RAMS to store Fast Path !! 234 Say Y here to experiment with turning CPUs off and on. CPUs
>> 235 can be controlled through /sys/devices/system/cpu/cpu#.
>> 236 Say N if you want to disable CPU hotplug.
242 237
243 config ARC_ICCM_SZ !! 238 if SPARC64
244 int "ICCM Size in KB" !! 239 source "drivers/cpufreq/Kconfig"
245 default "64" !! 240 endif
246 depends on ARC_HAS_ICCM <<
247 241
248 config ARC_HAS_DCCM !! 242 config US3_MC
249 bool "Use DCCM" !! 243 tristate "UltraSPARC-III Memory Controller driver"
>> 244 depends on SPARC64
>> 245 default y
250 help 246 help
251 Single Cycle RAMS to store Fast Path !! 247 This adds a driver for the UltraSPARC-III memory controller.
>> 248 Loading this driver allows exact mnemonic strings to be
>> 249 printed in the event of a memory error, so that the faulty DIMM
>> 250 on the motherboard can be matched to the error.
252 251
253 config ARC_DCCM_SZ !! 252 If in doubt, say Y, as this information can be very useful.
254 int "DCCM Size in KB" <<
255 default "64" <<
256 depends on ARC_HAS_DCCM <<
257 253
258 config ARC_DCCM_BASE !! 254 # Global things across all Sun machines.
259 hex "DCCM map address" !! 255 config GENERIC_LOCKBREAK
260 default "0xA0000000" !! 256 bool
261 depends on ARC_HAS_DCCM !! 257 default y
>> 258 depends on SPARC64 && SMP && PREEMPTION
262 259
263 choice !! 260 config NUMA
264 prompt "MMU Version" !! 261 bool "NUMA support"
265 default ARC_MMU_V3 if ISA_ARCOMPACT !! 262 depends on SPARC64 && SMP
266 default ARC_MMU_V4 if ISA_ARCV2 <<
267 263
268 config ARC_MMU_V3 !! 264 config NODES_SHIFT
269 bool "MMU v3" !! 265 int "Maximum NUMA Nodes (as a power of 2)"
270 depends on ISA_ARCOMPACT !! 266 range 4 5 if SPARC64
>> 267 default "5"
>> 268 depends on NEED_MULTIPLE_NODES
271 help 269 help
272 Introduced with ARC700 4.10: New Fea !! 270 Specify the maximum number of NUMA Nodes available on the target
273 Variable Page size (1k-16k), var JTL !! 271 system. Increases memory reserved to accommodate various tables.
274 Shared Address Spaces (SASID) <<
275 272
276 config ARC_MMU_V4 !! 273 config ARCH_SPARSEMEM_ENABLE
277 bool "MMU v4" !! 274 def_bool y if SPARC64
278 depends on ISA_ARCV2 !! 275 select SPARSEMEM_VMEMMAP_ENABLE
279 276
280 endchoice !! 277 config ARCH_SPARSEMEM_DEFAULT
>> 278 def_bool y if SPARC64
281 279
282 !! 280 config FORCE_MAX_ZONEORDER
283 choice !! 281 int "Maximum zone order"
284 prompt "MMU Page Size" !! 282 default "13"
285 default ARC_PAGE_SIZE_8K <<
286 <<
287 config ARC_PAGE_SIZE_8K <<
288 bool "8KB" <<
289 select HAVE_PAGE_SIZE_8KB <<
290 help 283 help
291 Choose between 8k vs 16k !! 284 The kernel memory allocator divides physically contiguous memory
292 !! 285 blocks into "zones", where each zone is a power of two number of
293 config ARC_PAGE_SIZE_16K !! 286 pages. This option selects the largest power of two that the kernel
294 select HAVE_PAGE_SIZE_16KB !! 287 keeps in the memory allocator. If you need to allocate very large
295 bool "16KB" !! 288 blocks of physically contiguous memory, then you may need to
296 !! 289 increase this value.
297 config ARC_PAGE_SIZE_4K <<
298 bool "4KB" <<
299 select HAVE_PAGE_SIZE_4KB <<
300 depends on ARC_MMU_V3 || ARC_MMU_V4 <<
301 <<
302 endchoice <<
303 <<
304 choice <<
305 prompt "MMU Super Page Size" <<
306 depends on ISA_ARCV2 && TRANSPARENT_HU <<
307 default ARC_HUGEPAGE_2M <<
308 <<
309 config ARC_HUGEPAGE_2M <<
310 bool "2MB" <<
311 290
312 config ARC_HUGEPAGE_16M !! 291 This config option is actually maximum order plus one. For example,
313 bool "16MB" !! 292 a value of 13 means that the largest free memory block is 2^12 pages.
314 293
315 endchoice !! 294 if SPARC64
>> 295 source "kernel/power/Kconfig"
>> 296 endif
316 297
317 config PGTABLE_LEVELS !! 298 config SCHED_SMT
318 int "Number of Page table levels" !! 299 bool "SMT (Hyperthreading) scheduler support"
319 default 2 !! 300 depends on SPARC64 && SMP
>> 301 default y
>> 302 help
>> 303 SMT scheduler support improves the CPU scheduler's decision making
>> 304 when dealing with SPARC cpus at a cost of slightly increased overhead
>> 305 in some places. If unsure say N here.
>> 306
>> 307 config SCHED_MC
>> 308 bool "Multi-core scheduler support"
>> 309 depends on SPARC64 && SMP
>> 310 default y
>> 311 help
>> 312 Multi-core scheduler support improves the CPU scheduler's decision
>> 313 making when dealing with multi-core CPU chips at a cost of slightly
>> 314 increased overhead in some places. If unsure say N here.
>> 315
>> 316 config CMDLINE_BOOL
>> 317 bool "Default bootloader kernel arguments"
>> 318 depends on SPARC64
>> 319
>> 320 config CMDLINE
>> 321 string "Initial kernel command string"
>> 322 depends on CMDLINE_BOOL
>> 323 default "console=ttyS0,9600 root=/dev/sda1"
>> 324 help
>> 325 Say Y here if you want to be able to pass default arguments to
>> 326 the kernel. This will be overridden by the bootloader, if you
>> 327 use one (such as SILO). This is most useful if you want to boot
>> 328 a kernel from TFTP, and want default options to be available
>> 329 with having them passed on the command line.
>> 330
>> 331 NOTE: This option WILL override the PROM bootargs setting!
>> 332
>> 333 config SUN_PM
>> 334 bool
>> 335 default y if SPARC32
>> 336 help
>> 337 Enable power management and CPU standby features on supported
>> 338 SPARC platforms.
>> 339
>> 340 config SPARC_LED
>> 341 tristate "Sun4m LED driver"
>> 342 depends on SPARC32
>> 343 help
>> 344 This driver toggles the front-panel LED on sun4m systems
>> 345 in a user-specifiable manner. Its state can be probed
>> 346 by reading /proc/led and its blinking mode can be changed
>> 347 via writes to /proc/led
>> 348
>> 349 config SERIAL_CONSOLE
>> 350 bool
>> 351 depends on SPARC32
>> 352 default y
>> 353 help
>> 354 If you say Y here, it will be possible to use a serial port as the
>> 355 system console (the system console is the device which receives all
>> 356 kernel messages and warnings and which allows logins in single user
>> 357 mode). This could be useful if some terminal or printer is connected
>> 358 to that serial port.
>> 359
>> 360 Even if you say Y here, the currently visible virtual console
>> 361 (/dev/tty0) will still be used as the system console by default, but
>> 362 you can alter that using a kernel command line option such as
>> 363 "console=ttyS1". (Try "man bootparam" or see the documentation of
>> 364 your boot loader (silo) about how to pass options to the kernel at
>> 365 boot time.)
>> 366
>> 367 If you don't have a graphics card installed and you say Y here, the
>> 368 kernel will automatically use the first serial line, /dev/ttyS0, as
>> 369 system console.
>> 370
>> 371 If unsure, say N.
>> 372
>> 373 config SPARC_LEON
>> 374 bool "Sparc Leon processor family"
>> 375 depends on SPARC32
>> 376 select USB_EHCI_BIG_ENDIAN_MMIO
>> 377 select USB_EHCI_BIG_ENDIAN_DESC
>> 378 select USB_UHCI_BIG_ENDIAN_MMIO
>> 379 select USB_UHCI_BIG_ENDIAN_DESC
>> 380 help
>> 381 If you say Y here if you are running on a SPARC-LEON processor.
>> 382 The LEON processor is a synthesizable VHDL model of the
>> 383 SPARC-v8 standard. LEON is part of the GRLIB collection of
>> 384 IP cores that are distributed under GPL. GRLIB can be downloaded
>> 385 from www.gaisler.com. You can download a sparc-linux cross-compilation
>> 386 toolchain at www.gaisler.com.
>> 387
>> 388 if SPARC_LEON
>> 389 menu "U-Boot options"
>> 390
>> 391 config UBOOT_LOAD_ADDR
>> 392 hex "uImage Load Address"
>> 393 default 0x40004000
>> 394 help
>> 395 U-Boot kernel load address, the address in physical address space
>> 396 where u-boot will place the Linux kernel before booting it.
>> 397 This address is normally the base address of main memory + 0x4000.
>> 398
>> 399 config UBOOT_FLASH_ADDR
>> 400 hex "uImage.o Load Address"
>> 401 default 0x00080000
>> 402 help
>> 403 Optional setting only affecting the uImage.o ELF-image used to
>> 404 download the uImage file to the target using a ELF-loader other than
>> 405 U-Boot. It may for example be used to download an uImage to FLASH with
>> 406 the GRMON utility before even starting u-boot.
>> 407
>> 408 config UBOOT_ENTRY_ADDR
>> 409 hex "uImage Entry Address"
>> 410 default 0xf0004000
>> 411 help
>> 412 Do not change this unless you know what you're doing. This is
>> 413 hardcoded by the SPARC32 and LEON port.
320 414
321 config ARC_COMPACT_IRQ_LEVELS !! 415 This is the virtual address u-boot jumps to when booting the Linux
322 depends on ISA_ARCOMPACT !! 416 Kernel.
323 bool "Setup Timer IRQ as high Priority <<
324 # if SMP, LV2 enabled ONLY if ARC impl <<
325 depends on !SMP <<
326 417
327 config ARC_FPU_SAVE_RESTORE !! 418 endmenu
328 bool "Enable FPU state persistence acr !! 419 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 <<
334 420
335 config ARC_CANT_LLSC !! 421 endmenu
336 def_bool n <<
337 422
338 config ARC_HAS_LLSC !! 423 menu "Bus options (PCI etc.)"
339 bool "Insn: LLOCK/SCOND (efficient ato !! 424 config SBUS
>> 425 bool
340 default y 426 default y
341 depends on !ARC_CANT_LLSC <<
342 427
343 config ARC_HAS_SWAPE !! 428 config SBUSCHAR
344 bool "Insn: SWAPE (endian-swap)" !! 429 bool
345 default y 430 default y
346 431
347 if ISA_ARCV2 !! 432 config SUN_LDOMS
348 !! 433 bool "Sun Logical Domains support"
349 config ARC_USE_UNALIGNED_MEM_ACCESS !! 434 depends on SPARC64
350 bool "Enable unaligned access in HW" <<
351 default y <<
352 select HAVE_EFFICIENT_UNALIGNED_ACCESS <<
353 help 435 help
354 The ARC HS architecture supports una !! 436 Say Y here is you want to support virtual devices via
355 which is disabled by default. Enable !! 437 Logical Domains.
356 hardware and use software to use it <<
357 438
358 config ARC_HAS_LL64 !! 439 config PCIC_PCI
359 bool "Insn: 64bit LDD/STD" !! 440 bool
360 help !! 441 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 442 default y
365 443
366 config ARC_HAS_DIV_REM !! 444 config LEON_PCI
367 bool "Insn: div, divu, rem, remu" !! 445 bool
>> 446 depends on PCI && SPARC_LEON
368 default y 447 default y
369 448
370 config ARC_HAS_ACCL_REGS !! 449 config SPARC_GRPCI1
371 bool "Reg Pair ACCL:ACCH (FPU and/or M !! 450 bool "GRPCI Host Bridge Support"
>> 451 depends on LEON_PCI
372 default y 452 default y
373 help 453 help
374 Depending on the configuration, CPU !! 454 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
375 (also referred to as r58:r59). These !! 455 PCI host controller is typically found in GRLIB SPARC32/LEON
376 kernel needs to save/restore per pro !! 456 systems. The driver has one property (all_pci_errors) controlled
377 !! 457 from the bootloader that makes the GRPCI to generate interrupts
378 config ARC_DSP_HANDLED !! 458 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 <<
425 459
426 config ARC_IRQ_NO_AUTOSAVE !! 460 config SPARC_GRPCI2
427 bool "Disable hardware autosave regfil !! 461 bool "GRPCI2 Host Bridge Support"
428 default n !! 462 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 463 default y
498 help 464 help
499 This reserves gp register to point t !! 465 Say Y here to include the GRPCI2 Host Bridge Driver.
500 kernel mode eliding memory access fo <<
501 <<
502 466
503 config ARC_EMUL_UNALIGNED !! 467 config SUN_OPENPROMFS
504 bool "Emulate unaligned memory access !! 468 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 469 help
509 This enables misaligned 16 & 32 bit !! 470 If you say Y, the OpenPROM device tree will be available as a
510 Use ONLY-IF-ABS-NECESSARY as it will !! 471 virtual file system, which you can mount to /proc/openprom by "mount
511 potential bugs in code !! 472 -t openpromfs none /proc/openprom".
512 473
513 config HZ !! 474 To compile the /proc/openprom support as a module, choose M here: the
514 int "Timer Frequency" !! 475 module will be called openpromfs.
515 default 100 <<
516 476
517 config ARC_METAWARE_HLINK !! 477 Only choose N if you know in advance that you will not need to modify
518 bool "Support for Metaware debugger as !! 478 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 <<
524 479
525 menuconfig ARC_DBG !! 480 # Makefile helpers
526 bool "ARC debugging" !! 481 config SPARC64_PCI
>> 482 bool
527 default y 483 default y
>> 484 depends on SPARC64 && PCI
528 485
529 if ARC_DBG !! 486 config SPARC64_PCI_MSI
530 !! 487 bool
531 config ARC_DW2_UNWIND <<
532 bool "Enable DWARF specific kernel sta <<
533 default y 488 default y
534 select KALLSYMS !! 489 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 <<
543 490
544 config ARC_DBG_JUMP_LABEL !! 491 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 <<
558 492
559 endmenu # "ARC Architecture Configuration" !! 493 config COMPAT
>> 494 bool
>> 495 depends on SPARC64
>> 496 default y
>> 497 select HAVE_UID16
>> 498 select ARCH_WANT_OLD_COMPAT_IPC
>> 499 select COMPAT_OLD_SIGACTION
560 500
561 config ARCH_FORCE_MAX_ORDER !! 501 config SYSVIPC_COMPAT
562 int "Maximum zone order" !! 502 bool
563 default "11" if ARC_HUGEPAGE_16M !! 503 depends on COMPAT && SYSVIPC
564 default "10" !! 504 default y
565 505
566 source "kernel/power/Kconfig" !! 506 source "drivers/sbus/char/Kconfig"
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