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_ARCH_KGDB if !SMP || SPARC64
23 select GENERIC_ATOMIC64 if !ISA_ARCV2 !! 23 select HAVE_ARCH_TRACEHOOK
24 # for now, we don't need GENERIC_IRQ_P !! 24 select HAVE_ARCH_SECCOMP if SPARC64
>> 25 select HAVE_EXIT_THREAD
>> 26 select HAVE_PCI
>> 27 select SYSCTL_EXCEPTION_TRACE
>> 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 <<
31 select GENERIC_STRNCPY_FROM_USER if MM <<
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 40 select MODULES_USE_ELF_RELA
50 select OF <<
51 select OF_EARLY_FLATTREE <<
52 select PCI_SYSCALL if PCI 41 select PCI_SYSCALL if PCI
53 select HAVE_ARCH_JUMP_LABEL if ISA_ARC !! 42 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
>> 43 select ODD_RT_SIGACTION
>> 44 select OLD_SIGSUSPEND
>> 45 select CPU_NO_EFFICIENT_FFS
>> 46 select LOCKDEP_SMALL if LOCKDEP
>> 47 select NEED_DMA_MAP_STATE
>> 48 select NEED_SG_DMA_LENGTH
54 select TRACE_IRQFLAGS_SUPPORT 49 select TRACE_IRQFLAGS_SUPPORT
55 select HAVE_EBPF_JIT if ISA_ARCV2 <<
56 50
57 config LOCKDEP_SUPPORT !! 51 config SPARC32
58 def_bool y !! 52 def_bool !64BIT
59 !! 53 select ARCH_32BIT_OFF_T
60 config SCHED_OMIT_FRAME_POINTER !! 54 select ARCH_HAS_SYNC_DMA_FOR_CPU
61 def_bool y !! 55 select CLZ_TAB
62 !! 56 select DMA_DIRECT_REMAP
63 config GENERIC_CSUM !! 57 select GENERIC_ATOMIC64
64 def_bool y !! 58 select HAVE_UID16
65 !! 59 select OLD_SIGACTION
66 config ARCH_FLATMEM_ENABLE !! 60 select ZONE_DMA
67 def_bool y !! 61
68 !! 62 config SPARC64
69 config MMU !! 63 def_bool 64BIT
70 def_bool y !! 64 select ALTERNATE_USER_ADDRESS_SPACE
>> 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 MMU_GATHER_MERGE_VMAS
>> 71 select MMU_GATHER_NO_FLUSH_CACHE
>> 72 select HAVE_ARCH_TRANSPARENT_HUGEPAGE
>> 73 select HAVE_DYNAMIC_FTRACE
>> 74 select HAVE_FTRACE_MCOUNT_RECORD
>> 75 select HAVE_SYSCALL_TRACEPOINTS
>> 76 select HAVE_CONTEXT_TRACKING
>> 77 select HAVE_TIF_NOHZ
>> 78 select HAVE_DEBUG_KMEMLEAK
>> 79 select IOMMU_HELPER
>> 80 select SPARSE_IRQ
>> 81 select RTC_DRV_CMOS
>> 82 select RTC_DRV_BQ4802
>> 83 select RTC_DRV_SUN4V
>> 84 select RTC_DRV_STARFIRE
>> 85 select HAVE_PERF_EVENTS
>> 86 select PERF_USE_VMALLOC
>> 87 select ARCH_HAVE_NMI_SAFE_CMPXCHG
>> 88 select HAVE_C_RECORDMCOUNT
>> 89 select ARCH_HAS_VM_GET_PAGE_PROT
>> 90 select HAVE_ARCH_AUDITSYSCALL
>> 91 select ARCH_SUPPORTS_ATOMIC_RMW
>> 92 select ARCH_SUPPORTS_DEBUG_PAGEALLOC
>> 93 select HAVE_NMI
>> 94 select HAVE_REGS_AND_STACK_ACCESS_API
>> 95 select ARCH_USE_QUEUED_RWLOCKS
>> 96 select ARCH_USE_QUEUED_SPINLOCKS
>> 97 select GENERIC_TIME_VSYSCALL
>> 98 select ARCH_CLOCKSOURCE_DATA
>> 99 select ARCH_HAS_PTE_SPECIAL
>> 100 select PCI_DOMAINS if PCI
>> 101 select ARCH_HAS_GIGANTIC_PAGE
>> 102 select HAVE_SOFTIRQ_ON_OWN_STACK
>> 103 select HAVE_SETUP_PER_CPU_AREA
>> 104 select NEED_PER_CPU_EMBED_FIRST_CHUNK
>> 105 select NEED_PER_CPU_PAGE_FIRST_CHUNK
71 106
72 config NO_IOPORT_MAP !! 107 config ARCH_PROC_KCORE_TEXT
73 def_bool y 108 def_bool y
74 109
75 config GENERIC_CALIBRATE_DELAY !! 110 config CPU_BIG_ENDIAN
76 def_bool y 111 def_bool y
77 112
78 config GENERIC_HWEIGHT !! 113 config ARCH_ATU
79 def_bool y !! 114 bool
>> 115 default y if SPARC64
80 116
81 config STACKTRACE_SUPPORT 117 config STACKTRACE_SUPPORT
82 def_bool y !! 118 bool
83 select STACKTRACE !! 119 default y if SPARC64
>> 120
>> 121 config LOCKDEP_SUPPORT
>> 122 bool
>> 123 default y if SPARC64
84 124
85 menu "ARC Architecture Configuration" !! 125 config ARCH_HIBERNATION_POSSIBLE
>> 126 def_bool y if SPARC64
86 127
87 menu "ARC Platform/SoC/Board" !! 128 config AUDIT_ARCH
>> 129 bool
>> 130 default y
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
>> 139 select KMAP_LOCAL
94 140
95 choice !! 141 config GENERIC_ISA_DMA
96 prompt "ARC Instruction Set" !! 142 bool
97 default ISA_ARCV2 !! 143 default y if SPARC32
98 144
99 config ISA_ARCOMPACT !! 145 config PGTABLE_LEVELS
100 bool "ARCompact ISA" !! 146 default 4 if 64BIT
101 select CPU_NO_EFFICIENT_FFS !! 147 default 3
102 help <<
103 The original ARC ISA of ARC600/700 c <<
104 148
105 config ISA_ARCV2 !! 149 config ARCH_SUPPORTS_UPROBES
106 bool "ARC ISA v2" !! 150 def_bool y if SPARC64
107 select ARC_TIMERS_64BIT <<
108 help <<
109 ISA for the Next Generation ARC-HS c <<
110 <<
111 endchoice <<
112 <<
113 menu "ARC CPU Configuration" <<
114 <<
115 choice <<
116 prompt "ARC Core" <<
117 default ARC_CPU_770 if ISA_ARCOMPACT <<
118 default ARC_CPU_HS if ISA_ARCV2 <<
119 <<
120 config ARC_CPU_770 <<
121 bool "ARC770" <<
122 depends on ISA_ARCOMPACT <<
123 select ARC_HAS_SWAPE <<
124 help <<
125 Support for ARC770 core introduced w <<
126 This core has a bunch of cool new fe <<
127 -MMU-v3: Variable Page Sz (4k, 8k, 1 <<
128 Shared Address Spaces (for <<
129 -Caches: New Prog Model, Region Flus <<
130 -Insns: endian swap, load-locked/sto <<
131 <<
132 config ARC_CPU_HS <<
133 bool "ARC-HS" <<
134 depends on ISA_ARCV2 <<
135 help <<
136 Support for ARC HS38x Cores based on <<
137 The notable features are: <<
138 - SMP configurations of up to 4 co <<
139 - Optional L2 Cache and IO-Coheren <<
140 - Revised Interrupt Architecture ( <<
141 auto stack switch, auto regfil <<
142 - MMUv4 (PIPT dcache, Huge Pages) <<
143 - Instructions for <<
144 * 64bit load/store: LDD, STD <<
145 * Hardware assisted divide/rem <<
146 * Function prologue/epilogue: <<
147 * IRQ enable/disable: CLRI, SE <<
148 * pop count: FFS, FLS <<
149 * SETcc, BMSKN, XBFU... <<
150 <<
151 endchoice <<
152 <<
153 config ARC_TUNE_MCPU <<
154 string "Override default -mcpu compile <<
155 default "" <<
156 help <<
157 Override default -mcpu=xxx compiler <<
158 the ISA version) with the specified <<
159 NOTE: If specified flag isn't suppor <<
160 ISA default value will be used as a <<
161 151
162 config CPU_BIG_ENDIAN !! 152 menu "Processor type and features"
163 bool "Enable Big Endian Mode" <<
164 help <<
165 Build kernel for Big Endian Mode of <<
166 153
167 config SMP 154 config SMP
168 bool "Symmetric Multi-Processing" !! 155 bool "Symmetric multi-processing support"
169 select ARC_MCIP if ISA_ARCV2 <<
170 help 156 help
171 This enables support for systems wit !! 157 This enables support for systems with more than one CPU. If you have
>> 158 a system with only one CPU, say N. If you have a system with more
>> 159 than one CPU, say Y.
>> 160
>> 161 If you say N here, the kernel will run on uni- and multiprocessor
>> 162 machines, but will use only one CPU of a multiprocessor machine. If
>> 163 you say Y here, the kernel will run on many, but not all,
>> 164 uniprocessor machines. On a uniprocessor machine, the kernel
>> 165 will run faster if you say N here.
>> 166
>> 167 People using multiprocessor machines who say Y here should also say
>> 168 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
>> 169 Management" code will be disabled if you say Y here.
172 170
173 if SMP !! 171 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
>> 172 available at <https://www.tldp.org/docs.html#howto>.
174 173
175 config NR_CPUS !! 174 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" <<
179 175
180 config ARC_SMP_HALT_ON_RESET !! 176 config NR_CPUS
181 bool "Enable Halt-on-reset boot mode" !! 177 int "Maximum number of CPUs"
182 help !! 178 depends on SMP
183 In SMP configuration cores can be co !! 179 range 2 32 if SPARC32
184 or they could all start at same time !! 180 range 2 4096 if SPARC64
185 masters are parked until Master kick !! 181 default 32 if SPARC32
186 at designated entry point. For other !! 182 default 4096 if SPARC64
187 entry point and spin wait for Master <<
188 183
189 endif #SMP !! 184 source "kernel/Kconfig.hz"
190 185
191 config ARC_MCIP !! 186 config GENERIC_HWEIGHT
192 bool "ARConnect Multicore IP (MCIP) Su !! 187 bool
193 depends on ISA_ARCV2 !! 188 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,. <<
199 189
200 menuconfig ARC_CACHE !! 190 config GENERIC_CALIBRATE_DELAY
201 bool "Enable Cache Support" !! 191 bool
202 default y 192 default y
203 193
204 if ARC_CACHE !! 194 config ARCH_MAY_HAVE_PC_FDC
>> 195 bool
>> 196 default y
205 197
206 config ARC_CACHE_LINE_SHIFT !! 198 config EMULATED_CMPXCHG
207 int "Cache Line Length (as power of 2) !! 199 bool
208 range 5 7 !! 200 default y if SPARC32
209 default "6" <<
210 help 201 help
211 Starting with ARC700 4.9, Cache line !! 202 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
212 This option specifies "N", with Line !! 203 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 <<
215 204
216 config ARC_HAS_ICACHE !! 205 # Makefile helpers
217 bool "Use Instruction Cache" !! 206 config SPARC32_SMP
>> 207 bool
218 default y 208 default y
>> 209 depends on SPARC32 && SMP
219 210
220 config ARC_HAS_DCACHE !! 211 config SPARC64_SMP
221 bool "Use Data Cache" !! 212 bool
222 default y 213 default y
>> 214 depends on SPARC64 && SMP
223 215
224 config ARC_CACHE_PAGES !! 216 config EARLYFB
225 bool "Per Page Cache Control" !! 217 bool "Support for early boot text console"
226 default y 218 default y
227 depends on ARC_HAS_ICACHE || ARC_HAS_D !! 219 depends on SPARC64
228 help 220 help
229 This can be used to over-ride the gl !! 221 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 <<
237 222
238 config ARC_HAS_ICCM !! 223 config HOTPLUG_CPU
239 bool "Use ICCM" !! 224 bool "Support for hot-pluggable CPUs"
>> 225 depends on SPARC64 && SMP
240 help 226 help
241 Single Cycle RAMS to store Fast Path !! 227 Say Y here to experiment with turning CPUs off and on. CPUs
>> 228 can be controlled through /sys/devices/system/cpu/cpu#.
>> 229 Say N if you want to disable CPU hotplug.
242 230
243 config ARC_ICCM_SZ !! 231 if SPARC64
244 int "ICCM Size in KB" !! 232 source "drivers/cpufreq/Kconfig"
245 default "64" !! 233 endif
246 depends on ARC_HAS_ICCM <<
247 234
248 config ARC_HAS_DCCM !! 235 config US3_MC
249 bool "Use DCCM" !! 236 tristate "UltraSPARC-III Memory Controller driver"
>> 237 depends on SPARC64
>> 238 default y
250 help 239 help
251 Single Cycle RAMS to store Fast Path !! 240 This adds a driver for the UltraSPARC-III memory controller.
>> 241 Loading this driver allows exact mnemonic strings to be
>> 242 printed in the event of a memory error, so that the faulty DIMM
>> 243 on the motherboard can be matched to the error.
252 244
253 config ARC_DCCM_SZ !! 245 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 <<
257 246
258 config ARC_DCCM_BASE !! 247 # Global things across all Sun machines.
259 hex "DCCM map address" !! 248 config GENERIC_LOCKBREAK
260 default "0xA0000000" !! 249 bool
261 depends on ARC_HAS_DCCM !! 250 default y
>> 251 depends on SPARC64 && SMP && PREEMPTION
262 252
263 choice !! 253 config NUMA
264 prompt "MMU Version" !! 254 bool "NUMA support"
265 default ARC_MMU_V3 if ISA_ARCOMPACT !! 255 depends on SPARC64 && SMP
266 default ARC_MMU_V4 if ISA_ARCV2 <<
267 256
268 config ARC_MMU_V3 !! 257 config NODES_SHIFT
269 bool "MMU v3" !! 258 int "Maximum NUMA Nodes (as a power of 2)"
270 depends on ISA_ARCOMPACT !! 259 range 4 5 if SPARC64
>> 260 default "5"
>> 261 depends on NUMA
271 help 262 help
272 Introduced with ARC700 4.10: New Fea !! 263 Specify the maximum number of NUMA Nodes available on the target
273 Variable Page size (1k-16k), var JTL !! 264 system. Increases memory reserved to accommodate various tables.
274 Shared Address Spaces (SASID) <<
275 <<
276 config ARC_MMU_V4 <<
277 bool "MMU v4" <<
278 depends on ISA_ARCV2 <<
279 <<
280 endchoice <<
281 265
>> 266 config ARCH_SPARSEMEM_ENABLE
>> 267 def_bool y if SPARC64
>> 268 select SPARSEMEM_VMEMMAP_ENABLE
282 269
283 choice !! 270 config ARCH_SPARSEMEM_DEFAULT
284 prompt "MMU Page Size" !! 271 def_bool y if SPARC64
285 default ARC_PAGE_SIZE_8K <<
286 272
287 config ARC_PAGE_SIZE_8K !! 273 config FORCE_MAX_ZONEORDER
288 bool "8KB" !! 274 int "Maximum zone order"
289 select HAVE_PAGE_SIZE_8KB !! 275 default "13"
290 help 276 help
291 Choose between 8k vs 16k !! 277 The kernel memory allocator divides physically contiguous memory
292 !! 278 blocks into "zones", where each zone is a power of two number of
293 config ARC_PAGE_SIZE_16K !! 279 pages. This option selects the largest power of two that the kernel
294 select HAVE_PAGE_SIZE_16KB !! 280 keeps in the memory allocator. If you need to allocate very large
295 bool "16KB" !! 281 blocks of physically contiguous memory, then you may need to
296 !! 282 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 <<
303 283
304 choice !! 284 This config option is actually maximum order plus one. For example,
305 prompt "MMU Super Page Size" !! 285 a value of 13 means that the largest free memory block is 2^12 pages.
306 depends on ISA_ARCV2 && TRANSPARENT_HU <<
307 default ARC_HUGEPAGE_2M <<
308 286
309 config ARC_HUGEPAGE_2M !! 287 if SPARC64
310 bool "2MB" !! 288 source "kernel/power/Kconfig"
311 !! 289 endif
312 config ARC_HUGEPAGE_16M <<
313 bool "16MB" <<
314 <<
315 endchoice <<
316 290
317 config PGTABLE_LEVELS !! 291 config SCHED_SMT
318 int "Number of Page table levels" !! 292 bool "SMT (Hyperthreading) scheduler support"
319 default 2 !! 293 depends on SPARC64 && SMP
>> 294 default y
>> 295 help
>> 296 SMT scheduler support improves the CPU scheduler's decision making
>> 297 when dealing with SPARC cpus at a cost of slightly increased overhead
>> 298 in some places. If unsure say N here.
>> 299
>> 300 config SCHED_MC
>> 301 bool "Multi-core scheduler support"
>> 302 depends on SPARC64 && SMP
>> 303 default y
>> 304 help
>> 305 Multi-core scheduler support improves the CPU scheduler's decision
>> 306 making when dealing with multi-core CPU chips at a cost of slightly
>> 307 increased overhead in some places. If unsure say N here.
>> 308
>> 309 config CMDLINE_BOOL
>> 310 bool "Default bootloader kernel arguments"
>> 311 depends on SPARC64
>> 312
>> 313 config CMDLINE
>> 314 string "Initial kernel command string"
>> 315 depends on CMDLINE_BOOL
>> 316 default "console=ttyS0,9600 root=/dev/sda1"
>> 317 help
>> 318 Say Y here if you want to be able to pass default arguments to
>> 319 the kernel. This will be overridden by the bootloader, if you
>> 320 use one (such as SILO). This is most useful if you want to boot
>> 321 a kernel from TFTP, and want default options to be available
>> 322 with having them passed on the command line.
>> 323
>> 324 NOTE: This option WILL override the PROM bootargs setting!
>> 325
>> 326 config SUN_PM
>> 327 bool
>> 328 default y if SPARC32
>> 329 help
>> 330 Enable power management and CPU standby features on supported
>> 331 SPARC platforms.
>> 332
>> 333 config SPARC_LED
>> 334 tristate "Sun4m LED driver"
>> 335 depends on SPARC32
>> 336 help
>> 337 This driver toggles the front-panel LED on sun4m systems
>> 338 in a user-specifiable manner. Its state can be probed
>> 339 by reading /proc/led and its blinking mode can be changed
>> 340 via writes to /proc/led
>> 341
>> 342 config SERIAL_CONSOLE
>> 343 bool
>> 344 depends on SPARC32
>> 345 default y
>> 346 help
>> 347 If you say Y here, it will be possible to use a serial port as the
>> 348 system console (the system console is the device which receives all
>> 349 kernel messages and warnings and which allows logins in single user
>> 350 mode). This could be useful if some terminal or printer is connected
>> 351 to that serial port.
>> 352
>> 353 Even if you say Y here, the currently visible virtual console
>> 354 (/dev/tty0) will still be used as the system console by default, but
>> 355 you can alter that using a kernel command line option such as
>> 356 "console=ttyS1". (Try "man bootparam" or see the documentation of
>> 357 your boot loader (silo) about how to pass options to the kernel at
>> 358 boot time.)
>> 359
>> 360 If you don't have a graphics card installed and you say Y here, the
>> 361 kernel will automatically use the first serial line, /dev/ttyS0, as
>> 362 system console.
>> 363
>> 364 If unsure, say N.
>> 365
>> 366 config SPARC_LEON
>> 367 bool "Sparc Leon processor family"
>> 368 depends on SPARC32
>> 369 select USB_EHCI_BIG_ENDIAN_MMIO
>> 370 select USB_EHCI_BIG_ENDIAN_DESC
>> 371 select USB_UHCI_BIG_ENDIAN_MMIO
>> 372 select USB_UHCI_BIG_ENDIAN_DESC
>> 373 help
>> 374 If you say Y here if you are running on a SPARC-LEON processor.
>> 375 The LEON processor is a synthesizable VHDL model of the
>> 376 SPARC-v8 standard. LEON is part of the GRLIB collection of
>> 377 IP cores that are distributed under GPL. GRLIB can be downloaded
>> 378 from www.gaisler.com. You can download a sparc-linux cross-compilation
>> 379 toolchain at www.gaisler.com.
>> 380
>> 381 if SPARC_LEON
>> 382 menu "U-Boot options"
>> 383
>> 384 config UBOOT_LOAD_ADDR
>> 385 hex "uImage Load Address"
>> 386 default 0x40004000
>> 387 help
>> 388 U-Boot kernel load address, the address in physical address space
>> 389 where u-boot will place the Linux kernel before booting it.
>> 390 This address is normally the base address of main memory + 0x4000.
>> 391
>> 392 config UBOOT_FLASH_ADDR
>> 393 hex "uImage.o Load Address"
>> 394 default 0x00080000
>> 395 help
>> 396 Optional setting only affecting the uImage.o ELF-image used to
>> 397 download the uImage file to the target using a ELF-loader other than
>> 398 U-Boot. It may for example be used to download an uImage to FLASH with
>> 399 the GRMON utility before even starting u-boot.
>> 400
>> 401 config UBOOT_ENTRY_ADDR
>> 402 hex "uImage Entry Address"
>> 403 default 0xf0004000
>> 404 help
>> 405 Do not change this unless you know what you're doing. This is
>> 406 hardcoded by the SPARC32 and LEON port.
320 407
321 config ARC_COMPACT_IRQ_LEVELS !! 408 This is the virtual address u-boot jumps to when booting the Linux
322 depends on ISA_ARCOMPACT !! 409 Kernel.
323 bool "Setup Timer IRQ as high Priority <<
324 # if SMP, LV2 enabled ONLY if ARC impl <<
325 depends on !SMP <<
326 410
327 config ARC_FPU_SAVE_RESTORE !! 411 endmenu
328 bool "Enable FPU state persistence acr !! 412 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 <<
334 413
335 config ARC_CANT_LLSC !! 414 endmenu
336 def_bool n <<
337 415
338 config ARC_HAS_LLSC !! 416 menu "Bus options (PCI etc.)"
339 bool "Insn: LLOCK/SCOND (efficient ato !! 417 config SBUS
>> 418 bool
340 default y 419 default y
341 depends on !ARC_CANT_LLSC <<
342 420
343 config ARC_HAS_SWAPE !! 421 config SBUSCHAR
344 bool "Insn: SWAPE (endian-swap)" !! 422 bool
345 default y 423 default y
346 424
347 if ISA_ARCV2 !! 425 config SUN_LDOMS
348 !! 426 bool "Sun Logical Domains support"
349 config ARC_USE_UNALIGNED_MEM_ACCESS !! 427 depends on SPARC64
350 bool "Enable unaligned access in HW" <<
351 default y <<
352 select HAVE_EFFICIENT_UNALIGNED_ACCESS <<
353 help 428 help
354 The ARC HS architecture supports una !! 429 Say Y here is you want to support virtual devices via
355 which is disabled by default. Enable !! 430 Logical Domains.
356 hardware and use software to use it <<
357 431
358 config ARC_HAS_LL64 !! 432 config PCIC_PCI
359 bool "Insn: 64bit LDD/STD" !! 433 bool
360 help !! 434 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 435 default y
365 436
366 config ARC_HAS_DIV_REM !! 437 config LEON_PCI
367 bool "Insn: div, divu, rem, remu" !! 438 bool
>> 439 depends on PCI && SPARC_LEON
368 default y 440 default y
369 441
370 config ARC_HAS_ACCL_REGS !! 442 config SPARC_GRPCI1
371 bool "Reg Pair ACCL:ACCH (FPU and/or M !! 443 bool "GRPCI Host Bridge Support"
>> 444 depends on LEON_PCI
372 default y 445 default y
373 help 446 help
374 Depending on the configuration, CPU !! 447 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
375 (also referred to as r58:r59). These !! 448 PCI host controller is typically found in GRLIB SPARC32/LEON
376 kernel needs to save/restore per pro !! 449 systems. The driver has one property (all_pci_errors) controlled
377 !! 450 from the bootloader that makes the GRPCI to generate interrupts
378 config ARC_DSP_HANDLED !! 451 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 <<
415 452
416 config ARC_DSP_AGU_USERSPACE !! 453 config SPARC_GRPCI2
417 bool "Support DSP with AGU for userspa !! 454 bool "GRPCI2 Host Bridge Support"
418 select ARC_HAS_ACCL_REGS !! 455 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 456 default y
498 help 457 help
499 This reserves gp register to point t !! 458 Say Y here to include the GRPCI2 Host Bridge Driver.
500 kernel mode eliding memory access fo <<
501 <<
502 459
503 config ARC_EMUL_UNALIGNED !! 460 config SUN_OPENPROMFS
504 bool "Emulate unaligned memory access !! 461 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 462 help
509 This enables misaligned 16 & 32 bit !! 463 If you say Y, the OpenPROM device tree will be available as a
510 Use ONLY-IF-ABS-NECESSARY as it will !! 464 virtual file system, which you can mount to /proc/openprom by "mount
511 potential bugs in code !! 465 -t openpromfs none /proc/openprom".
512 466
513 config HZ !! 467 To compile the /proc/openprom support as a module, choose M here: the
514 int "Timer Frequency" !! 468 module will be called openpromfs.
515 default 100 <<
516 469
517 config ARC_METAWARE_HLINK !! 470 Only choose N if you know in advance that you will not need to modify
518 bool "Support for Metaware debugger as !! 471 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 <<
524 472
525 menuconfig ARC_DBG !! 473 # Makefile helpers
526 bool "ARC debugging" !! 474 config SPARC64_PCI
>> 475 bool
527 default y 476 default y
>> 477 depends on SPARC64 && PCI
528 478
529 if ARC_DBG !! 479 config SPARC64_PCI_MSI
530 !! 480 bool
531 config ARC_DW2_UNWIND <<
532 bool "Enable DWARF specific kernel sta <<
533 default y 481 default y
534 select KALLSYMS !! 482 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 <<
543 483
544 config ARC_DBG_JUMP_LABEL !! 484 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 <<
559 endmenu # "ARC Architecture Configuration" <<
560 485
561 config ARCH_FORCE_MAX_ORDER !! 486 config COMPAT
562 int "Maximum zone order" !! 487 bool
563 default "11" if ARC_HUGEPAGE_16M !! 488 depends on SPARC64
564 default "10" !! 489 default y
>> 490 select HAVE_UID16
>> 491 select ARCH_WANT_OLD_COMPAT_IPC
>> 492 select COMPAT_OLD_SIGACTION
565 493
566 source "kernel/power/Kconfig" !! 494 source "drivers/sbus/char/Kconfig"
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