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_USER
>> 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 HAVE_ARCH_AUDITSYSCALL
>> 90 select ARCH_SUPPORTS_ATOMIC_RMW
>> 91 select ARCH_SUPPORTS_DEBUG_PAGEALLOC
>> 92 select HAVE_NMI
>> 93 select HAVE_REGS_AND_STACK_ACCESS_API
>> 94 select ARCH_USE_QUEUED_RWLOCKS
>> 95 select ARCH_USE_QUEUED_SPINLOCKS
>> 96 select GENERIC_TIME_VSYSCALL
>> 97 select ARCH_CLOCKSOURCE_DATA
>> 98 select ARCH_HAS_PTE_SPECIAL
>> 99 select PCI_DOMAINS if PCI
>> 100 select ARCH_HAS_GIGANTIC_PAGE
>> 101 select HAVE_SOFTIRQ_ON_OWN_STACK
>> 102 select HAVE_SETUP_PER_CPU_AREA
>> 103 select NEED_PER_CPU_EMBED_FIRST_CHUNK
>> 104 select NEED_PER_CPU_PAGE_FIRST_CHUNK
71 105
72 config NO_IOPORT_MAP !! 106 config ARCH_PROC_KCORE_TEXT
73 def_bool y 107 def_bool y
74 108
75 config GENERIC_CALIBRATE_DELAY !! 109 config CPU_BIG_ENDIAN
76 def_bool y 110 def_bool y
77 111
78 config GENERIC_HWEIGHT !! 112 config ARCH_ATU
79 def_bool y !! 113 bool
>> 114 default y if SPARC64
80 115
81 config STACKTRACE_SUPPORT 116 config STACKTRACE_SUPPORT
82 def_bool y !! 117 bool
83 select STACKTRACE !! 118 default y if SPARC64
84 119
85 menu "ARC Architecture Configuration" !! 120 config LOCKDEP_SUPPORT
>> 121 bool
>> 122 default y if SPARC64
86 123
87 menu "ARC Platform/SoC/Board" !! 124 config ARCH_HIBERNATION_POSSIBLE
>> 125 def_bool y if SPARC64
88 126
89 source "arch/arc/plat-tb10x/Kconfig" !! 127 config AUDIT_ARCH
90 source "arch/arc/plat-axs10x/Kconfig" !! 128 bool
91 source "arch/arc/plat-hsdk/Kconfig" !! 129 default y
92 130
93 endmenu !! 131 config MMU
>> 132 bool
>> 133 default y
94 134
95 choice !! 135 config HIGHMEM
96 prompt "ARC Instruction Set" !! 136 bool
97 default ISA_ARCV2 !! 137 default y if SPARC32
>> 138 select KMAP_LOCAL
98 139
99 config ISA_ARCOMPACT !! 140 config GENERIC_ISA_DMA
100 bool "ARCompact ISA" !! 141 bool
101 select CPU_NO_EFFICIENT_FFS !! 142 default y if SPARC32
102 help <<
103 The original ARC ISA of ARC600/700 c <<
104 143
105 config ISA_ARCV2 !! 144 config PGTABLE_LEVELS
106 bool "ARC ISA v2" !! 145 default 4 if 64BIT
107 select ARC_TIMERS_64BIT !! 146 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 <<
161 147
162 config CPU_BIG_ENDIAN !! 148 config ARCH_SUPPORTS_UPROBES
163 bool "Enable Big Endian Mode" !! 149 def_bool y if SPARC64
164 help !! 150
165 Build kernel for Big Endian Mode of !! 151 menu "Processor type and features"
166 152
167 config SMP 153 config SMP
168 bool "Symmetric Multi-Processing" !! 154 bool "Symmetric multi-processing support"
169 select ARC_MCIP if ISA_ARCV2 <<
170 help 155 help
171 This enables support for systems wit !! 156 This enables support for systems with more than one CPU. If you have
>> 157 a system with only one CPU, say N. If you have a system with more
>> 158 than one CPU, say Y.
>> 159
>> 160 If you say N here, the kernel will run on uni- and multiprocessor
>> 161 machines, but will use only one CPU of a multiprocessor machine. If
>> 162 you say Y here, the kernel will run on many, but not all,
>> 163 uniprocessor machines. On a uniprocessor machine, the kernel
>> 164 will run faster if you say N here.
>> 165
>> 166 People using multiprocessor machines who say Y here should also say
>> 167 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
>> 168 Management" code will be disabled if you say Y here.
172 169
173 if SMP !! 170 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
>> 171 available at <https://www.tldp.org/docs.html#howto>.
174 172
175 config NR_CPUS !! 173 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" <<
179 174
180 config ARC_SMP_HALT_ON_RESET !! 175 config NR_CPUS
181 bool "Enable Halt-on-reset boot mode" !! 176 int "Maximum number of CPUs"
182 help !! 177 depends on SMP
183 In SMP configuration cores can be co !! 178 range 2 32 if SPARC32
184 or they could all start at same time !! 179 range 2 4096 if SPARC64
185 masters are parked until Master kick !! 180 default 32 if SPARC32
186 at designated entry point. For other !! 181 default 4096 if SPARC64
187 entry point and spin wait for Master <<
188 182
189 endif #SMP !! 183 source "kernel/Kconfig.hz"
190 184
191 config ARC_MCIP !! 185 config GENERIC_HWEIGHT
192 bool "ARConnect Multicore IP (MCIP) Su !! 186 bool
193 depends on ISA_ARCV2 !! 187 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,. <<
199 188
200 menuconfig ARC_CACHE !! 189 config GENERIC_CALIBRATE_DELAY
201 bool "Enable Cache Support" !! 190 bool
202 default y 191 default y
203 192
204 if ARC_CACHE !! 193 config ARCH_MAY_HAVE_PC_FDC
>> 194 bool
>> 195 default y
205 196
206 config ARC_CACHE_LINE_SHIFT !! 197 config EMULATED_CMPXCHG
207 int "Cache Line Length (as power of 2) !! 198 bool
208 range 5 7 !! 199 default y if SPARC32
209 default "6" <<
210 help 200 help
211 Starting with ARC700 4.9, Cache line !! 201 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
212 This option specifies "N", with Line !! 202 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 <<
215 203
216 config ARC_HAS_ICACHE !! 204 # Makefile helpers
217 bool "Use Instruction Cache" !! 205 config SPARC32_SMP
>> 206 bool
218 default y 207 default y
>> 208 depends on SPARC32 && SMP
219 209
220 config ARC_HAS_DCACHE !! 210 config SPARC64_SMP
221 bool "Use Data Cache" !! 211 bool
222 default y 212 default y
>> 213 depends on SPARC64 && SMP
223 214
224 config ARC_CACHE_PAGES !! 215 config EARLYFB
225 bool "Per Page Cache Control" !! 216 bool "Support for early boot text console"
226 default y 217 default y
227 depends on ARC_HAS_ICACHE || ARC_HAS_D !! 218 depends on SPARC64
228 help 219 help
229 This can be used to over-ride the gl !! 220 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 <<
235 221
236 endif #ARC_CACHE !! 222 config HOTPLUG_CPU
237 !! 223 bool "Support for hot-pluggable CPUs"
238 config ARC_HAS_ICCM !! 224 depends on SPARC64 && SMP
239 bool "Use ICCM" <<
240 help 225 help
241 Single Cycle RAMS to store Fast Path !! 226 Say Y here to experiment with turning CPUs off and on. CPUs
>> 227 can be controlled through /sys/devices/system/cpu/cpu#.
>> 228 Say N if you want to disable CPU hotplug.
242 229
243 config ARC_ICCM_SZ !! 230 if SPARC64
244 int "ICCM Size in KB" !! 231 source "drivers/cpufreq/Kconfig"
245 default "64" !! 232 endif
246 depends on ARC_HAS_ICCM <<
247 233
248 config ARC_HAS_DCCM !! 234 config US3_MC
249 bool "Use DCCM" !! 235 tristate "UltraSPARC-III Memory Controller driver"
>> 236 depends on SPARC64
>> 237 default y
250 help 238 help
251 Single Cycle RAMS to store Fast Path !! 239 This adds a driver for the UltraSPARC-III memory controller.
>> 240 Loading this driver allows exact mnemonic strings to be
>> 241 printed in the event of a memory error, so that the faulty DIMM
>> 242 on the motherboard can be matched to the error.
252 243
253 config ARC_DCCM_SZ !! 244 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 <<
257 245
258 config ARC_DCCM_BASE !! 246 # Global things across all Sun machines.
259 hex "DCCM map address" !! 247 config GENERIC_LOCKBREAK
260 default "0xA0000000" !! 248 bool
261 depends on ARC_HAS_DCCM !! 249 default y
>> 250 depends on SPARC64 && SMP && PREEMPTION
262 251
263 choice !! 252 config NUMA
264 prompt "MMU Version" !! 253 bool "NUMA support"
265 default ARC_MMU_V3 if ISA_ARCOMPACT !! 254 depends on SPARC64 && SMP
266 default ARC_MMU_V4 if ISA_ARCV2 <<
267 255
268 config ARC_MMU_V3 !! 256 config NODES_SHIFT
269 bool "MMU v3" !! 257 int "Maximum NUMA Nodes (as a power of 2)"
270 depends on ISA_ARCOMPACT !! 258 range 4 5 if SPARC64
>> 259 default "5"
>> 260 depends on NUMA
271 help 261 help
272 Introduced with ARC700 4.10: New Fea !! 262 Specify the maximum number of NUMA Nodes available on the target
273 Variable Page size (1k-16k), var JTL !! 263 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 <<
279 264
280 endchoice !! 265 config ARCH_SPARSEMEM_ENABLE
>> 266 def_bool y if SPARC64
>> 267 select SPARSEMEM_VMEMMAP_ENABLE
281 268
>> 269 config ARCH_SPARSEMEM_DEFAULT
>> 270 def_bool y if SPARC64
282 271
283 choice !! 272 config ARCH_FORCE_MAX_ORDER
284 prompt "MMU Page Size" !! 273 int "Maximum zone order"
285 default ARC_PAGE_SIZE_8K !! 274 default "13"
286 <<
287 config ARC_PAGE_SIZE_8K <<
288 bool "8KB" <<
289 select HAVE_PAGE_SIZE_8KB <<
290 help 275 help
291 Choose between 8k vs 16k !! 276 The kernel memory allocator divides physically contiguous memory
292 !! 277 blocks into "zones", where each zone is a power of two number of
293 config ARC_PAGE_SIZE_16K !! 278 pages. This option selects the largest power of two that the kernel
294 select HAVE_PAGE_SIZE_16KB !! 279 keeps in the memory allocator. If you need to allocate very large
295 bool "16KB" !! 280 blocks of physically contiguous memory, then you may need to
296 !! 281 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 <<
303 282
304 choice !! 283 This config option is actually maximum order plus one. For example,
305 prompt "MMU Super Page Size" !! 284 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 <<
308 285
309 config ARC_HUGEPAGE_2M !! 286 if SPARC64 || COMPILE_TEST
310 bool "2MB" !! 287 source "kernel/power/Kconfig"
311 !! 288 endif
312 config ARC_HUGEPAGE_16M <<
313 bool "16MB" <<
314 <<
315 endchoice <<
316 289
317 config PGTABLE_LEVELS !! 290 config SCHED_SMT
318 int "Number of Page table levels" !! 291 bool "SMT (Hyperthreading) scheduler support"
319 default 2 !! 292 depends on SPARC64 && SMP
>> 293 default y
>> 294 help
>> 295 SMT scheduler support improves the CPU scheduler's decision making
>> 296 when dealing with SPARC cpus at a cost of slightly increased overhead
>> 297 in some places. If unsure say N here.
>> 298
>> 299 config SCHED_MC
>> 300 bool "Multi-core scheduler support"
>> 301 depends on SPARC64 && SMP
>> 302 default y
>> 303 help
>> 304 Multi-core scheduler support improves the CPU scheduler's decision
>> 305 making when dealing with multi-core CPU chips at a cost of slightly
>> 306 increased overhead in some places. If unsure say N here.
>> 307
>> 308 config CMDLINE_BOOL
>> 309 bool "Default bootloader kernel arguments"
>> 310 depends on SPARC64
>> 311
>> 312 config CMDLINE
>> 313 string "Initial kernel command string"
>> 314 depends on CMDLINE_BOOL
>> 315 default "console=ttyS0,9600 root=/dev/sda1"
>> 316 help
>> 317 Say Y here if you want to be able to pass default arguments to
>> 318 the kernel. This will be overridden by the bootloader, if you
>> 319 use one (such as SILO). This is most useful if you want to boot
>> 320 a kernel from TFTP, and want default options to be available
>> 321 with having them passed on the command line.
>> 322
>> 323 NOTE: This option WILL override the PROM bootargs setting!
>> 324
>> 325 config SUN_PM
>> 326 bool
>> 327 default y if SPARC32
>> 328 help
>> 329 Enable power management and CPU standby features on supported
>> 330 SPARC platforms.
>> 331
>> 332 config SPARC_LED
>> 333 tristate "Sun4m LED driver"
>> 334 depends on SPARC32
>> 335 help
>> 336 This driver toggles the front-panel LED on sun4m systems
>> 337 in a user-specifiable manner. Its state can be probed
>> 338 by reading /proc/led and its blinking mode can be changed
>> 339 via writes to /proc/led
>> 340
>> 341 config SERIAL_CONSOLE
>> 342 bool
>> 343 depends on SPARC32
>> 344 default y
>> 345 help
>> 346 If you say Y here, it will be possible to use a serial port as the
>> 347 system console (the system console is the device which receives all
>> 348 kernel messages and warnings and which allows logins in single user
>> 349 mode). This could be useful if some terminal or printer is connected
>> 350 to that serial port.
>> 351
>> 352 Even if you say Y here, the currently visible virtual console
>> 353 (/dev/tty0) will still be used as the system console by default, but
>> 354 you can alter that using a kernel command line option such as
>> 355 "console=ttyS1". (Try "man bootparam" or see the documentation of
>> 356 your boot loader (silo) about how to pass options to the kernel at
>> 357 boot time.)
>> 358
>> 359 If you don't have a graphics card installed and you say Y here, the
>> 360 kernel will automatically use the first serial line, /dev/ttyS0, as
>> 361 system console.
>> 362
>> 363 If unsure, say N.
>> 364
>> 365 config SPARC_LEON
>> 366 bool "Sparc Leon processor family"
>> 367 depends on SPARC32
>> 368 select USB_EHCI_BIG_ENDIAN_MMIO
>> 369 select USB_EHCI_BIG_ENDIAN_DESC
>> 370 select USB_UHCI_BIG_ENDIAN_MMIO
>> 371 select USB_UHCI_BIG_ENDIAN_DESC
>> 372 help
>> 373 If you say Y here if you are running on a SPARC-LEON processor.
>> 374 The LEON processor is a synthesizable VHDL model of the
>> 375 SPARC-v8 standard. LEON is part of the GRLIB collection of
>> 376 IP cores that are distributed under GPL. GRLIB can be downloaded
>> 377 from www.gaisler.com. You can download a sparc-linux cross-compilation
>> 378 toolchain at www.gaisler.com.
>> 379
>> 380 if SPARC_LEON
>> 381 menu "U-Boot options"
>> 382
>> 383 config UBOOT_LOAD_ADDR
>> 384 hex "uImage Load Address"
>> 385 default 0x40004000
>> 386 help
>> 387 U-Boot kernel load address, the address in physical address space
>> 388 where u-boot will place the Linux kernel before booting it.
>> 389 This address is normally the base address of main memory + 0x4000.
>> 390
>> 391 config UBOOT_FLASH_ADDR
>> 392 hex "uImage.o Load Address"
>> 393 default 0x00080000
>> 394 help
>> 395 Optional setting only affecting the uImage.o ELF-image used to
>> 396 download the uImage file to the target using a ELF-loader other than
>> 397 U-Boot. It may for example be used to download an uImage to FLASH with
>> 398 the GRMON utility before even starting u-boot.
>> 399
>> 400 config UBOOT_ENTRY_ADDR
>> 401 hex "uImage Entry Address"
>> 402 default 0xf0004000
>> 403 help
>> 404 Do not change this unless you know what you're doing. This is
>> 405 hardcoded by the SPARC32 and LEON port.
320 406
321 config ARC_COMPACT_IRQ_LEVELS !! 407 This is the virtual address u-boot jumps to when booting the Linux
322 depends on ISA_ARCOMPACT !! 408 Kernel.
323 bool "Setup Timer IRQ as high Priority <<
324 # if SMP, LV2 enabled ONLY if ARC impl <<
325 depends on !SMP <<
326 409
327 config ARC_FPU_SAVE_RESTORE !! 410 endmenu
328 bool "Enable FPU state persistence acr !! 411 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 <<
334 412
335 config ARC_CANT_LLSC !! 413 endmenu
336 def_bool n <<
337 414
338 config ARC_HAS_LLSC !! 415 menu "Bus options (PCI etc.)"
339 bool "Insn: LLOCK/SCOND (efficient ato !! 416 config SBUS
>> 417 bool
340 default y 418 default y
341 depends on !ARC_CANT_LLSC <<
342 419
343 config ARC_HAS_SWAPE !! 420 config SBUSCHAR
344 bool "Insn: SWAPE (endian-swap)" !! 421 bool
345 default y 422 default y
346 423
347 if ISA_ARCV2 !! 424 config SUN_LDOMS
348 !! 425 bool "Sun Logical Domains support"
349 config ARC_USE_UNALIGNED_MEM_ACCESS !! 426 depends on SPARC64
350 bool "Enable unaligned access in HW" <<
351 default y <<
352 select HAVE_EFFICIENT_UNALIGNED_ACCESS <<
353 help 427 help
354 The ARC HS architecture supports una !! 428 Say Y here is you want to support virtual devices via
355 which is disabled by default. Enable !! 429 Logical Domains.
356 hardware and use software to use it <<
357 430
358 config ARC_HAS_LL64 !! 431 config PCIC_PCI
359 bool "Insn: 64bit LDD/STD" !! 432 bool
360 help !! 433 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 434 default y
365 435
366 config ARC_HAS_DIV_REM !! 436 config LEON_PCI
367 bool "Insn: div, divu, rem, remu" !! 437 bool
>> 438 depends on PCI && SPARC_LEON
368 default y 439 default y
369 440
370 config ARC_HAS_ACCL_REGS !! 441 config SPARC_GRPCI1
371 bool "Reg Pair ACCL:ACCH (FPU and/or M !! 442 bool "GRPCI Host Bridge Support"
>> 443 depends on LEON_PCI
372 default y 444 default y
373 help 445 help
374 Depending on the configuration, CPU !! 446 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
375 (also referred to as r58:r59). These !! 447 PCI host controller is typically found in GRLIB SPARC32/LEON
376 kernel needs to save/restore per pro !! 448 systems. The driver has one property (all_pci_errors) controlled
377 !! 449 from the bootloader that makes the GRPCI to generate interrupts
378 config ARC_DSP_HANDLED !! 450 on detected PCI Parity and System errors.
379 def_bool n <<
380 <<
381 config ARC_DSP_SAVE_RESTORE_REGS <<
382 def_bool n <<
383 <<
384 choice <<
385 prompt "DSP support" <<
386 default ARC_DSP_NONE <<
387 help <<
388 Depending on the configuration, CPU <<
389 (ACC0_GLO, ACC0_GHI, DSP_BFLY0, DSP_ <<
390 Below are options describing how to <<
391 interrupt entry / exit and in contex <<
392 <<
393 config ARC_DSP_NONE <<
394 bool "No DSP extension presence in HW" <<
395 help <<
396 No DSP extension presence in HW <<
397 <<
398 config ARC_DSP_KERNEL <<
399 bool "DSP extension in HW, no support <<
400 select ARC_HAS_ACCL_REGS <<
401 select ARC_DSP_HANDLED <<
402 help <<
403 DSP extension presence in HW, no sup <<
404 applications. We don't save / restor <<
405 some minimal preparations so userspa <<
406 <<
407 config ARC_DSP_USERSPACE <<
408 bool "Support DSP for userspace apps" <<
409 select ARC_HAS_ACCL_REGS <<
410 select ARC_DSP_HANDLED <<
411 select ARC_DSP_SAVE_RESTORE_REGS <<
412 help <<
413 DSP extension presence in HW, suppor <<
414 run DSP-enabled userspace applicatio <<
415 <<
416 config ARC_DSP_AGU_USERSPACE <<
417 bool "Support DSP with AGU for userspa <<
418 select ARC_HAS_ACCL_REGS <<
419 select ARC_DSP_HANDLED <<
420 select ARC_DSP_SAVE_RESTORE_REGS <<
421 help <<
422 DSP and AGU extensions presence in H <<
423 and AGU registers to run DSP-enabled <<
424 endchoice <<
425 <<
426 config ARC_IRQ_NO_AUTOSAVE <<
427 bool "Disable hardware autosave regfil <<
428 default n <<
429 help <<
430 On HS cores, taken interrupt auto sa <<
431 This is programmable and can be opti <<
432 software INTERRUPT_PROLOGUE/EPILGUE <<
433 <<
434 config ARC_LPB_DISABLE <<
435 bool "Disable loop buffer (LPB)" <<
436 help <<
437 On HS cores, loop buffer (LPB) is pr <<
438 be optionally disabled. <<
439 <<
440 endif # ISA_ARCV2 <<
441 <<
442 endmenu # "ARC CPU Configuration" <<
443 <<
444 config LINUX_LINK_BASE <<
445 hex "Kernel link address" <<
446 default "0x80000000" <<
447 help <<
448 ARC700 divides the 32 bit phy addres <<
449 -Lower 2G (0 - 0x7FFF_FFFF ) is user <<
450 -Upper 2G (0x8000_0000 onwards) is u <<
451 Typically Linux kernel is linked at <<
452 hence the default value of 0x8zs. <<
453 However some customers have peripher <<
454 Linux needs to be scooted a bit. <<
455 If you don't know what the above mea <<
456 This needs to match memory start add <<
457 <<
458 config LINUX_RAM_BASE <<
459 hex "RAM base address" <<
460 default LINUX_LINK_BASE <<
461 help <<
462 By default Linux is linked at base o <<
463 cases (such as HSDK), Linux can't be <<
464 this option. <<
465 <<
466 config HIGHMEM <<
467 bool "High Memory Support" <<
468 select HAVE_ARCH_PFN_VALID <<
469 select KMAP_LOCAL <<
470 help <<
471 With ARC 2G:2G address split, only u <<
472 kernel. Enable this to potentially a <<
473 in future <<
474 <<
475 config ARC_HAS_PAE40 <<
476 bool "Support for the 40-bit Physical <<
477 depends on ISA_ARCV2 <<
478 select HIGHMEM <<
479 select PHYS_ADDR_T_64BIT <<
480 help <<
481 Enable access to physical memory bey <<
482 ARC cores with 40 bit Physical Addre <<
483 451
484 config ARC_KVADDR_SIZE !! 452 config SPARC_GRPCI2
485 int "Kernel Virtual Address Space size !! 453 bool "GRPCI2 Host Bridge Support"
486 range 0 512 !! 454 depends on LEON_PCI
487 default "256" <<
488 help <<
489 The kernel address space is carved o <<
490 space for catering to vmalloc, modul <<
491 not suffice vmalloc requirements of <<
492 this to be stretched to 512 MB (by e <<
493 kernel-user gutter) <<
494 <<
495 config ARC_CURR_IN_REG <<
496 bool "cache current task pointer in gp <<
497 default y 455 default y
498 help 456 help
499 This reserves gp register to point t !! 457 Say Y here to include the GRPCI2 Host Bridge Driver.
500 kernel mode eliding memory access fo <<
501 458
502 !! 459 config SUN_OPENPROMFS
503 config ARC_EMUL_UNALIGNED !! 460 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 461 help
509 This enables misaligned 16 & 32 bit !! 462 If you say Y, the OpenPROM device tree will be available as a
510 Use ONLY-IF-ABS-NECESSARY as it will !! 463 virtual file system, which you can mount to /proc/openprom by "mount
511 potential bugs in code !! 464 -t openpromfs none /proc/openprom".
512 465
513 config HZ !! 466 To compile the /proc/openprom support as a module, choose M here: the
514 int "Timer Frequency" !! 467 module will be called openpromfs.
515 default 100 <<
516 468
517 config ARC_METAWARE_HLINK !! 469 Only choose N if you know in advance that you will not need to modify
518 bool "Support for Metaware debugger as !! 470 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 <<
524 471
525 menuconfig ARC_DBG !! 472 # Makefile helpers
526 bool "ARC debugging" !! 473 config SPARC64_PCI
>> 474 bool
527 default y 475 default y
>> 476 depends on SPARC64 && PCI
528 477
529 if ARC_DBG !! 478 config SPARC64_PCI_MSI
530 !! 479 bool
531 config ARC_DW2_UNWIND <<
532 bool "Enable DWARF specific kernel sta <<
533 default y 480 default y
534 select KALLSYMS !! 481 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 <<
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 <<
558 482
559 endmenu # "ARC Architecture Configuration" !! 483 endmenu
560 484
561 config ARCH_FORCE_MAX_ORDER !! 485 config COMPAT
562 int "Maximum zone order" !! 486 bool
563 default "11" if ARC_HUGEPAGE_16M !! 487 depends on SPARC64
564 default "10" !! 488 default y
>> 489 select HAVE_UID16
>> 490 select ARCH_WANT_OLD_COMPAT_IPC
>> 491 select COMPAT_OLD_SIGACTION
565 492
566 source "kernel/power/Kconfig" !! 493 source "drivers/sbus/char/Kconfig"
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