1 # SPDX-License-Identifier: GPL-2.0 1 # SPDX-License-Identifier: GPL-2.0
2 config XTENSA !! 2 config ALPHA
3 def_bool y !! 3 bool
4 select ARCH_32BIT_OFF_T !! 4 default y
5 select ARCH_HAS_CPU_CACHE_ALIASING !! 5 select ARCH_MIGHT_HAVE_PC_PARPORT
6 select ARCH_HAS_BINFMT_FLAT if !MMU !! 6 select ARCH_MIGHT_HAVE_PC_SERIO
7 select ARCH_HAS_CURRENT_STACK_POINTER !! 7 select ARCH_NO_PREEMPT
8 select ARCH_HAS_DEBUG_VM_PGTABLE !! 8 select ARCH_NO_SG_CHAIN
9 select ARCH_HAS_DMA_PREP_COHERENT if M !! 9 select ARCH_USE_CMPXCHG_LOCKREF
10 select ARCH_HAS_GCOV_PROFILE_ALL !! 10 select FORCE_PCI if !ALPHA_JENSEN
11 select ARCH_HAS_KCOV !! 11 select PCI_DOMAINS if PCI
12 select ARCH_HAS_SYNC_DMA_FOR_CPU if MM !! 12 select PCI_SYSCALL if PCI
13 select ARCH_HAS_SYNC_DMA_FOR_DEVICE if !! 13 select HAVE_AOUT
14 select ARCH_HAS_DMA_SET_UNCACHED if MM !! 14 select HAVE_IDE
15 select ARCH_HAS_STRNCPY_FROM_USER if ! !! 15 select HAVE_OPROFILE
16 select ARCH_HAS_STRNLEN_USER !! 16 select HAVE_PCSPKR_PLATFORM
17 select ARCH_NEED_CMPXCHG_1_EMU !! 17 select HAVE_PERF_EVENTS
18 select ARCH_USE_MEMTEST !! 18 select NEED_DMA_MAP_STATE
19 select ARCH_USE_QUEUED_RWLOCKS !! 19 select NEED_SG_DMA_LENGTH
20 select ARCH_USE_QUEUED_SPINLOCKS !! 20 select VIRT_TO_BUS
21 select ARCH_WANT_IPC_PARSE_VERSION !! 21 select GENERIC_IRQ_PROBE
22 select BUILDTIME_TABLE_SORT !! 22 select GENERIC_PCI_IOMAP if PCI
23 select CLONE_BACKWARDS !! 23 select AUTO_IRQ_AFFINITY if SMP
24 select COMMON_CLK <<
25 select DMA_NONCOHERENT_MMAP if MMU <<
26 select GENERIC_ATOMIC64 <<
27 select GENERIC_IRQ_SHOW 24 select GENERIC_IRQ_SHOW
28 select GENERIC_LIB_CMPDI2 !! 25 select ARCH_WANT_IPC_PARSE_VERSION
29 select GENERIC_LIB_MULDI3 !! 26 select ARCH_HAVE_NMI_SAFE_CMPXCHG
30 select GENERIC_LIB_UCMPDI2 !! 27 select AUDIT_ARCH
31 select GENERIC_PCI_IOMAP !! 28 select GENERIC_CLOCKEVENTS
32 select GENERIC_SCHED_CLOCK !! 29 select GENERIC_CPU_VULNERABILITIES
33 select GENERIC_IOREMAP if MMU !! 30 select GENERIC_SMP_IDLE_THREAD
>> 31 select GENERIC_STRNCPY_FROM_USER
>> 32 select GENERIC_STRNLEN_USER
34 select HAVE_ARCH_AUDITSYSCALL 33 select HAVE_ARCH_AUDITSYSCALL
35 select HAVE_ARCH_JUMP_LABEL if !XIP_KE !! 34 select HAVE_MOD_ARCH_SPECIFIC
36 select HAVE_ARCH_KASAN if MMU && !XIP_ <<
37 select HAVE_ARCH_KCSAN <<
38 select HAVE_ARCH_SECCOMP_FILTER <<
39 select HAVE_ARCH_TRACEHOOK <<
40 select HAVE_ASM_MODVERSIONS <<
41 select HAVE_CONTEXT_TRACKING_USER <<
42 select HAVE_DEBUG_KMEMLEAK <<
43 select HAVE_DMA_CONTIGUOUS <<
44 select HAVE_EXIT_THREAD <<
45 select HAVE_FUNCTION_TRACER <<
46 select HAVE_GCC_PLUGINS if GCC_VERSION <<
47 select HAVE_HW_BREAKPOINT if PERF_EVEN <<
48 select HAVE_IRQ_TIME_ACCOUNTING <<
49 select HAVE_PAGE_SIZE_4KB <<
50 select HAVE_PCI <<
51 select HAVE_PERF_EVENTS <<
52 select HAVE_STACKPROTECTOR <<
53 select HAVE_SYSCALL_TRACEPOINTS <<
54 select HAVE_VIRT_CPU_ACCOUNTING_GEN <<
55 select IRQ_DOMAIN <<
56 select LOCK_MM_AND_FIND_VMA <<
57 select MODULES_USE_ELF_RELA 35 select MODULES_USE_ELF_RELA
58 select PERF_USE_VMALLOC !! 36 select ODD_RT_SIGACTION
59 select TRACE_IRQFLAGS_SUPPORT !! 37 select OLD_SIGSUSPEND
60 help !! 38 select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67
61 Xtensa processors are 32-bit RISC ma !! 39 help
62 primarily for embedded systems. The !! 40 The Alpha is a 64-bit general-purpose processor designed and
63 configurable and extensible. The Li !! 41 marketed by the Digital Equipment Corporation of blessed memory,
64 architecture supports all processor !! 42 now Hewlett-Packard. The Alpha Linux project has a home page at
65 with reasonable minimum requirements !! 43 <http://www.alphalinux.org/>.
66 a home page at <http://www.linux-xte <<
67 44
68 config GENERIC_HWEIGHT !! 45 config 64BIT
69 def_bool y 46 def_bool y
70 47
71 config ARCH_HAS_ILOG2_U32 !! 48 config MMU
72 def_bool n !! 49 bool
73 !! 50 default y
74 config ARCH_HAS_ILOG2_U64 <<
75 def_bool n <<
76 51
77 config ARCH_MTD_XIP !! 52 config RWSEM_GENERIC_SPINLOCK
78 def_bool y !! 53 bool
79 54
80 config NO_IOPORT_MAP !! 55 config RWSEM_XCHGADD_ALGORITHM
81 def_bool n !! 56 bool
>> 57 default y
82 58
83 config HZ !! 59 config ARCH_HAS_ILOG2_U32
84 int !! 60 bool
85 default 100 !! 61 default n
86 62
87 config LOCKDEP_SUPPORT !! 63 config ARCH_HAS_ILOG2_U64
88 def_bool y !! 64 bool
>> 65 default n
89 66
90 config STACKTRACE_SUPPORT !! 67 config GENERIC_CALIBRATE_DELAY
91 def_bool y !! 68 bool
>> 69 default y
92 70
93 config MMU !! 71 config ZONE_DMA
94 def_bool n !! 72 bool
95 select PFAULT !! 73 default y
96 74
97 config HAVE_XTENSA_GPIO32 !! 75 config GENERIC_ISA_DMA
98 def_bool n !! 76 bool
>> 77 default y
99 78
100 config KASAN_SHADOW_OFFSET !! 79 config PGTABLE_LEVELS
101 hex !! 80 int
102 default 0x6e400000 !! 81 default 3
103 82
104 config CPU_BIG_ENDIAN !! 83 config AUDIT_ARCH
105 def_bool $(success,test "$(shell,echo !! 84 bool
106 85
107 config CPU_LITTLE_ENDIAN !! 86 menu "System setup"
108 def_bool !CPU_BIG_ENDIAN <<
109 87
110 config CC_HAVE_CALL0_ABI !! 88 choice
111 def_bool $(success,test "$(shell,echo !! 89 prompt "Alpha system type"
>> 90 default ALPHA_GENERIC
>> 91 ---help---
>> 92 This is the system type of your hardware. A "generic" kernel will
>> 93 run on any supported Alpha system. However, if you configure a
>> 94 kernel for your specific system, it will be faster and smaller.
112 95
113 menu "Processor type and features" !! 96 To find out what type of Alpha system you have, you may want to
>> 97 check out the Linux/Alpha FAQ, accessible on the WWW from
>> 98 <http://www.alphalinux.org/>. In summary:
114 99
115 choice !! 100 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
116 prompt "Xtensa Processor Configuration !! 101 Alpha-XL XL-233, XL-266
117 default XTENSA_VARIANT_FSF !! 102 AlphaBook1 Alpha laptop
>> 103 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
>> 104 Cabriolet AlphaPC64, AlphaPCI64
>> 105 DP264 DP264 / DS20 / ES40 / DS10 / DS10L
>> 106 EB164 EB164 21164 evaluation board
>> 107 EB64+ EB64+ 21064 evaluation board
>> 108 EB66 EB66 21066 evaluation board
>> 109 EB66+ EB66+ 21066 evaluation board
>> 110 Jensen DECpc 150, DEC 2000 models 300, 500
>> 111 LX164 AlphaPC164-LX
>> 112 Lynx AS 2100A
>> 113 Miata Personal Workstation 433/500/600 a/au
>> 114 Marvel AlphaServer ES47 / ES80 / GS1280
>> 115 Mikasa AS 1000
>> 116 Noname AXPpci33, UDB (Multia)
>> 117 Noritake AS 1000A, AS 600A, AS 800
>> 118 PC164 AlphaPC164
>> 119 Rawhide AS 1200, AS 4000, AS 4100
>> 120 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
>> 121 SX164 AlphaPC164-SX
>> 122 Sable AS 2000, AS 2100
>> 123 Shark DS 20L
>> 124 Takara Takara (OEM)
>> 125 Titan AlphaServer ES45 / DS25 / DS15
>> 126 Wildfire AlphaServer GS 40/80/160/320
118 127
119 config XTENSA_VARIANT_FSF !! 128 If you don't know what to do, choose "generic".
120 bool "fsf - default (not generic) conf <<
121 select MMU <<
122 129
123 config XTENSA_VARIANT_DC232B !! 130 config ALPHA_GENERIC
124 bool "dc232b - Diamond 232L Standard C !! 131 bool "Generic"
125 select MMU !! 132 depends on TTY
126 select HAVE_XTENSA_GPIO32 !! 133 select HAVE_EISA
127 help 134 help
128 This variant refers to Tensilica's D !! 135 A generic kernel will run on all supported Alpha hardware.
129 136
130 config XTENSA_VARIANT_DC233C !! 137 config ALPHA_ALCOR
131 bool "dc233c - Diamond 233L Standard C !! 138 bool "Alcor/Alpha-XLT"
132 select MMU !! 139 select HAVE_EISA
133 select HAVE_XTENSA_GPIO32 <<
134 help 140 help
135 This variant refers to Tensilica's D !! 141 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
>> 142 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
>> 143 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
>> 144 controller (256-bit memory bus) and a PCI interface. It also does
>> 145 all the work required to support an external Bcache and to maintain
>> 146 memory coherence when a PCI device DMAs into (or out of) memory.
136 147
137 config XTENSA_VARIANT_CUSTOM !! 148 config ALPHA_XL
138 bool "Custom Xtensa processor configur !! 149 bool "Alpha-XL"
139 select HAVE_XTENSA_GPIO32 <<
140 help 150 help
141 Select this variant to use a custom !! 151 XL-233 and XL-266-based Alpha systems.
142 You will be prompted for a processor <<
143 endchoice <<
144 152
145 config XTENSA_VARIANT_CUSTOM_NAME !! 153 config ALPHA_BOOK1
146 string "Xtensa Processor Custom Core V !! 154 bool "AlphaBook1"
147 depends on XTENSA_VARIANT_CUSTOM <<
148 help <<
149 Provide the name of a custom Xtensa <<
150 This CORENAME selects arch/xtensa/va <<
151 Don't forget you have to select MMU <<
152 <<
153 config XTENSA_VARIANT_NAME <<
154 string <<
155 default "dc232b" <<
156 default "dc233c" <<
157 default "fsf" <<
158 default XTENSA_VARIANT_CUSTOM_NAME <<
159 <<
160 config XTENSA_VARIANT_MMU <<
161 bool "Core variant has a Full MMU (TLB <<
162 depends on XTENSA_VARIANT_CUSTOM <<
163 default y <<
164 select MMU <<
165 help <<
166 Build a Conventional Kernel with ful <<
167 ie: it supports a TLB with auto-load <<
168 <<
169 config XTENSA_VARIANT_HAVE_PERF_EVENTS <<
170 bool "Core variant has Performance Mon <<
171 depends on XTENSA_VARIANT_CUSTOM <<
172 default n <<
173 help 155 help
174 Enable if core variant has Performan !! 156 Dec AlphaBook1/Burns Alpha-based laptops.
175 External Registers Interface. <<
176 157
177 If unsure, say N. !! 158 config ALPHA_AVANTI_CH
>> 159 bool "Avanti"
178 160
179 config XTENSA_FAKE_NMI !! 161 config ALPHA_CABRIOLET
180 bool "Treat PMM IRQ as NMI" !! 162 bool "Cabriolet"
181 depends on XTENSA_VARIANT_HAVE_PERF_EV <<
182 default n <<
183 help 163 help
184 If PMM IRQ is the only IRQ at EXCM l !! 164 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
185 treat it as NMI, which improves accu !! 165 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
186 !! 166 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
187 If there are other interrupts at or !! 167 Bcache SIMMs. Requires power supply with 3.3V output.
188 but not above the EXCM level, PMM IR <<
189 but only if these IRQs are not used. <<
190 saying that this is not safe, and a <<
191 actually fire. <<
192 168
193 If unsure, say N. !! 169 config ALPHA_DP264
>> 170 bool "DP264"
>> 171 help
>> 172 Various 21264 systems with the tsunami core logic chipset.
>> 173 API Networks: 264DP, UP2000(+), CS20;
>> 174 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
194 175
195 config PFAULT !! 176 config ALPHA_EB164
196 bool "Handle protection faults" if EXP !! 177 bool "EB164"
197 default y <<
198 help 178 help
199 Handle protection faults. MMU config !! 179 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
200 noMMU configurations may disable it !! 180 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
201 generates protection faults or fault !! 181 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
>> 182 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
>> 183 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
>> 184 motherboard. Requires power supply with 3.3V output.
202 185
203 If unsure, say Y. !! 186 config ALPHA_EB64P_CH
>> 187 bool "EB64+"
204 188
205 config XTENSA_UNALIGNED_USER !! 189 config ALPHA_EB66
206 bool "Unaligned memory access in user !! 190 bool "EB66"
207 help 191 help
208 The Xtensa architecture currently do !! 192 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
209 memory accesses in hardware but thro !! 193 identical to EB64+. Baby PC-AT size. Runs from standard PC power
210 Per default, unaligned memory access !! 194 supply. The EB66 schematic was published as a marketing poster
211 !! 195 advertising the 21066 as "the first microprocessor in the world with
212 Say Y here to enable unaligned memor !! 196 embedded PCI".
213 197
214 config XTENSA_LOAD_STORE !! 198 config ALPHA_EB66P
215 bool "Load/store exception handler for !! 199 bool "EB66+"
216 help 200 help
217 The Xtensa architecture only allows !! 201 Later variant of the EB66 board.
218 instruction bus with l32r and l32i i <<
219 instructions raise an exception with <<
220 This makes it hard to use some confi <<
221 literals in FLASH memory attached to <<
222 202
223 Say Y here to enable exception handl !! 203 config ALPHA_EIGER
224 byte and 2-byte access to memory att !! 204 bool "Eiger"
>> 205 help
>> 206 Apparently an obscure OEM single-board computer based on the
>> 207 Typhoon/Tsunami chipset family. Information on it is scanty.
225 208
226 config HAVE_SMP !! 209 config ALPHA_JENSEN
227 bool "System Supports SMP (MX)" !! 210 bool "Jensen"
228 depends on XTENSA_VARIANT_CUSTOM !! 211 depends on BROKEN
229 select XTENSA_MX !! 212 select HAVE_EISA
230 help 213 help
231 This option is used to indicate that !! 214 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
232 supports Multiprocessing. Multiproce !! 215 of the first-generation Alpha systems. A number of these systems
233 the CPU core definition and currentl !! 216 seem to be available on the second- hand market. The Jensen is a
>> 217 floor-standing tower system which originally used a 150MHz 21064 It
>> 218 used programmable logic to interface a 486 EISA I/O bridge to the
>> 219 CPU.
234 220
235 Multiprocessor support is implemente !! 221 config ALPHA_LX164
236 interrupt controllers. !! 222 bool "LX164"
>> 223 help
>> 224 A technical overview of this board is available at
>> 225 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
237 226
238 The MX interrupt distributer adds In !! 227 config ALPHA_LYNX
239 and causes the IRQ numbers to be inc !! 228 bool "Lynx"
240 like the open cores ethernet driver !! 229 select HAVE_EISA
>> 230 help
>> 231 AlphaServer 2100A-based systems.
241 232
242 You still have to select "Enable SMP !! 233 config ALPHA_MARVEL
>> 234 bool "Marvel"
>> 235 help
>> 236 AlphaServer ES47 / ES80 / GS1280 based on EV7.
243 237
244 config SMP !! 238 config ALPHA_MIATA
245 bool "Enable Symmetric multi-processin !! 239 bool "Miata"
246 depends on HAVE_SMP !! 240 select HAVE_EISA
247 select GENERIC_SMP_IDLE_THREAD <<
248 help 241 help
249 Enabled SMP Software; allows more th !! 242 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
250 to be activated during startup. !! 243 or 600au).
251 244
252 config NR_CPUS !! 245 config ALPHA_MIKASA
253 depends on SMP !! 246 bool "Mikasa"
254 int "Maximum number of CPUs (2-32)" !! 247 help
255 range 2 32 !! 248 AlphaServer 1000-based Alpha systems.
256 default "4" <<
257 249
258 config HOTPLUG_CPU !! 250 config ALPHA_NAUTILUS
259 bool "Enable CPU hotplug support" !! 251 bool "Nautilus"
260 depends on SMP <<
261 help 252 help
262 Say Y here to allow turning CPUs off !! 253 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
263 controlled through /sys/devices/syst <<
264 254
265 Say N if you want to disable CPU hot !! 255 config ALPHA_NONAME_CH
>> 256 bool "Noname"
266 257
267 config SECONDARY_RESET_VECTOR !! 258 config ALPHA_NORITAKE
268 bool "Secondary cores use alternative !! 259 bool "Noritake"
269 default y !! 260 select HAVE_EISA
270 depends on HAVE_SMP <<
271 help 261 help
272 Secondary cores may be configured to !! 262 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
273 or all cores may use primary reset v !! 263 systems.
274 Say Y here to supply handler for the <<
275 264
276 config FAST_SYSCALL_XTENSA !! 265 config ALPHA_PC164
277 bool "Enable fast atomic syscalls" !! 266 bool "PC164"
278 default n <<
279 help <<
280 fast_syscall_xtensa is a syscall tha <<
281 on UP kernel when processor has no s <<
282 267
283 This syscall is deprecated. It may h !! 268 config ALPHA_P2K
284 invalid arguments. It is provided on !! 269 bool "Platform2000"
285 Only enable it if your userspace sof <<
286 270
287 If unsure, say N. !! 271 config ALPHA_RAWHIDE
>> 272 bool "Rawhide"
>> 273 select HAVE_EISA
>> 274 help
>> 275 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
>> 276 See HOWTO at
>> 277 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
288 278
289 config FAST_SYSCALL_SPILL_REGISTERS !! 279 config ALPHA_RUFFIAN
290 bool "Enable spill registers syscall" !! 280 bool "Ruffian"
291 default n <<
292 help 281 help
293 fast_syscall_spill_registers is a sy !! 282 Samsung APC164UX. There is a page on known problems and workarounds
294 register windows of a calling usersp !! 283 at <http://www.alphalinux.org/faq/FAQ-11.html>.
295 284
296 This syscall is deprecated. It may h !! 285 config ALPHA_RX164
297 invalid arguments. It is provided on !! 286 bool "RX164"
298 Only enable it if your userspace sof <<
299 287
300 If unsure, say N. !! 288 config ALPHA_SX164
>> 289 bool "SX164"
301 290
302 choice !! 291 config ALPHA_SABLE
303 prompt "Kernel ABI" !! 292 bool "Sable"
304 default KERNEL_ABI_DEFAULT !! 293 select HAVE_EISA
305 help 294 help
306 Select ABI for the kernel code. This !! 295 Digital AlphaServer 2000 and 2100-based systems.
307 supported userspace ABI and any comb <<
308 kernel/userspace ABI is possible and <<
309 <<
310 In case both kernel and userspace su <<
311 all register windows support code wi <<
312 build. <<
313 <<
314 If unsure, choose the default ABI. <<
315 <<
316 config KERNEL_ABI_DEFAULT <<
317 bool "Default ABI" <<
318 help <<
319 Select this option to compile kernel <<
320 selected for the toolchain. <<
321 Normally cores with windowed registe <<
322 cores without it use call0 ABI. <<
323 <<
324 config KERNEL_ABI_CALL0 <<
325 bool "Call0 ABI" if CC_HAVE_CALL0_ABI <<
326 help <<
327 Select this option to compile kernel <<
328 toolchain that defaults to windowed <<
329 When this option is not selected the <<
330 be used for the kernel code. <<
331 <<
332 endchoice <<
333 296
334 config USER_ABI_CALL0 !! 297 config ALPHA_SHARK
335 bool !! 298 bool "Shark"
336 299
337 choice !! 300 config ALPHA_TAKARA
338 prompt "Userspace ABI" !! 301 bool "Takara"
339 default USER_ABI_DEFAULT <<
340 help 302 help
341 Select supported userspace ABI. !! 303 Alpha 11164-based OEM single-board computer.
342 <<
343 If unsure, choose the default ABI. <<
344 304
345 config USER_ABI_DEFAULT !! 305 config ALPHA_TITAN
346 bool "Default ABI only" !! 306 bool "Titan"
347 help 307 help
348 Assume default userspace ABI. For XE !! 308 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
349 call0 ABI binaries may be run on suc <<
350 will not work correctly for them. <<
351 309
352 config USER_ABI_CALL0_ONLY !! 310 config ALPHA_WILDFIRE
353 bool "Call0 ABI only" !! 311 bool "Wildfire"
354 select USER_ABI_CALL0 <<
355 help 312 help
356 Select this option to support only c !! 313 AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
357 Windowed ABI binaries will crash wit <<
358 an illegal instruction exception on <<
359 314
360 Choose this option if you're plannin !! 315 endchoice
361 built with call0 ABI. <<
362 316
363 config USER_ABI_CALL0_PROBE !! 317 # clear all implied options (don't want default values for those):
364 bool "Support both windowed and call0 !! 318 # Most of these machines have ISA slots; not exactly sure which don't,
365 select USER_ABI_CALL0 !! 319 # and this doesn't activate hordes of code, so do it always.
>> 320 config ISA
>> 321 bool
>> 322 default y
366 help 323 help
367 Select this option to support both w !! 324 Find out whether you have ISA slots on your motherboard. ISA is the
368 ABIs. When enabled all processes are !! 325 name of a bus system, i.e. the way the CPU talks to the other stuff
369 and a fast user exception handler fo !! 326 inside your box. Other bus systems are PCI, EISA, MicroChannel
370 used to turn on PS.WOE bit on the fi !! 327 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
371 the userspace. !! 328 newer boards don't support it. If you have ISA, say Y, otherwise N.
372 329
373 This option should be enabled for th !! 330 config ISA_DMA_API
374 both call0 and windowed ABIs in user !! 331 bool
>> 332 default y
375 333
376 Note that Xtensa ISA does not guaran !! 334 config ALPHA_NONAME
377 raise an illegal instruction excepti !! 335 bool
378 PS.WOE is disabled, check whether th !! 336 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
>> 337 default y
>> 338 help
>> 339 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
>> 340 UDB). This design was produced by Digital's Technical OEM (TOEM)
>> 341 group. It uses the 21066 processor running at 166MHz or 233MHz. It
>> 342 is a baby-AT size, and runs from a standard PC power supply. It has
>> 343 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
>> 344 2 versions, with either PS/2 or large DIN connectors for the
>> 345 keyboard.
379 346
380 endchoice !! 347 config ALPHA_EV4
>> 348 bool
>> 349 depends on ALPHA_JENSEN || (ALPHA_SABLE && !ALPHA_GAMMA) || ALPHA_LYNX || ALPHA_NORITAKE && !ALPHA_PRIMO || ALPHA_MIKASA && !ALPHA_PRIMO || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL || ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
>> 350 default y if !ALPHA_LYNX
381 351
382 endmenu !! 352 config ALPHA_LCA
>> 353 bool
>> 354 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
>> 355 default y
383 356
384 config XTENSA_CALIBRATE_CCOUNT !! 357 config ALPHA_APECS
385 def_bool n !! 358 bool
>> 359 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
>> 360 default y
>> 361
>> 362 config ALPHA_EB64P
>> 363 bool
>> 364 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
>> 365 default y
386 help 366 help
387 On some platforms (XT2000, for examp !! 367 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
388 vary. The frequency can be determin !! 368 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
389 against a well known, fixed frequenc !! 369 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
>> 370 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
>> 371 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
>> 372 Runs from standard PC power supply.
>> 373
>> 374 config ALPHA_EV5
>> 375 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
>> 376 default y if ALPHA_RX164 || ALPHA_RAWHIDE || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_SABLE && ALPHA_GAMMA || ALPHA_NORITAKE && ALPHA_PRIMO || ALPHA_MIKASA && ALPHA_PRIMO || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR
390 377
391 config SERIAL_CONSOLE !! 378 config ALPHA_EV4
392 def_bool n !! 379 bool
>> 380 default y if ALPHA_LYNX && !ALPHA_EV5
393 381
394 config PLATFORM_HAVE_XIP !! 382 config ALPHA_CIA
395 def_bool n !! 383 bool
>> 384 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_NORITAKE && ALPHA_PRIMO || ALPHA_MIKASA && ALPHA_PRIMO || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR
>> 385 default y
396 386
397 menu "Platform options" !! 387 config ALPHA_EV56
>> 388 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
>> 389 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
398 390
399 choice !! 391 config ALPHA_EV56
400 prompt "Xtensa System Type" !! 392 prompt "EV56 CPU (speed >= 333MHz)?"
401 default XTENSA_PLATFORM_ISS !! 393 depends on ALPHA_NORITAKE || ALPHA_PRIMO
>> 394
>> 395 config ALPHA_EV56
>> 396 prompt "EV56 CPU (speed >= 400MHz)?"
>> 397 depends on ALPHA_RAWHIDE
402 398
403 config XTENSA_PLATFORM_ISS !! 399 config ALPHA_PRIMO
404 bool "ISS" !! 400 bool "EV5 CPU daughtercard (model 5/xxx)?"
405 select XTENSA_CALIBRATE_CCOUNT !! 401 depends on ALPHA_NORITAKE || ALPHA_MIKASA
406 select SERIAL_CONSOLE <<
407 help <<
408 ISS is an acronym for Tensilica's In <<
409 <<
410 config XTENSA_PLATFORM_XT2000 <<
411 bool "XT2000" <<
412 help <<
413 XT2000 is the name of Tensilica's fe <<
414 This hardware is capable of running <<
415 <<
416 config XTENSA_PLATFORM_XTFPGA <<
417 bool "XTFPGA" <<
418 select ETHOC if ETHERNET <<
419 select PLATFORM_WANT_DEFAULT_MEM if !M <<
420 select SERIAL_CONSOLE <<
421 select XTENSA_CALIBRATE_CCOUNT <<
422 select PLATFORM_HAVE_XIP <<
423 help 402 help
424 XTFPGA is the name of Tensilica boar !! 403 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
425 This hardware is capable of running <<
426 404
427 endchoice !! 405 config ALPHA_GAMMA
>> 406 bool "EV5 CPU(s) (model 5/xxx)?"
>> 407 depends on ALPHA_SABLE
>> 408 help
>> 409 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
428 410
429 config PLATFORM_NR_IRQS !! 411 config ALPHA_GAMMA
430 int !! 412 bool
431 default 3 if XTENSA_PLATFORM_XT2000 !! 413 depends on ALPHA_LYNX
432 default 0 !! 414 default y
433 415
434 config XTENSA_CPU_CLOCK !! 416 config ALPHA_T2
435 int "CPU clock rate [MHz]" !! 417 bool
436 depends on !XTENSA_CALIBRATE_CCOUNT !! 418 depends on ALPHA_SABLE || ALPHA_LYNX
437 default 16 !! 419 default y
438 420
439 config GENERIC_CALIBRATE_DELAY !! 421 config ALPHA_PYXIS
440 bool "Auto calibration of the BogoMIPS !! 422 bool
441 help !! 423 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
442 The BogoMIPS value can easily be der !! 424 default y
443 425
444 config CMDLINE_BOOL !! 426 config ALPHA_EV6
445 bool "Default bootloader kernel argume !! 427 bool
>> 428 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
>> 429 default y
446 430
447 config CMDLINE !! 431 config ALPHA_TSUNAMI
448 string "Initial kernel command string" !! 432 bool
449 depends on CMDLINE_BOOL !! 433 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
450 default "console=ttyS0,38400 root=/dev !! 434 default y
451 help <<
452 On some architectures (EBSA110 and C <<
453 for the boot loader to pass argument <<
454 architectures, you should supply som <<
455 time by entering them here. As a min <<
456 memory size and the root device (e.g <<
457 435
458 config USE_OF !! 436 config ALPHA_EV67
459 bool "Flattened Device Tree support" !! 437 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
460 select OF !! 438 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
461 select OF_EARLY_FLATTREE <<
462 help 439 help
463 Include support for flattened device !! 440 Is this a machine based on the EV67 core? If in doubt, select N here
>> 441 and the machine will be treated as an EV6.
464 442
465 config BUILTIN_DTB_SOURCE !! 443 config ALPHA_MCPCIA
466 string "DTB to build into the kernel i !! 444 bool
467 depends on OF !! 445 depends on ALPHA_RAWHIDE
>> 446 default y
468 447
469 config PARSE_BOOTPARAM !! 448 config ALPHA_POLARIS
470 bool "Parse bootparam block" !! 449 bool
>> 450 depends on ALPHA_RX164
471 default y 451 default y
472 help <<
473 Parse parameters passed to the kerne <<
474 be disabled if the kernel is known t <<
475 452
476 If unsure, say Y. !! 453 config ALPHA_IRONGATE
>> 454 bool
>> 455 depends on ALPHA_NAUTILUS
>> 456 default y
477 457
478 choice !! 458 config GENERIC_HWEIGHT
479 prompt "Semihosting interface" !! 459 bool
480 default XTENSA_SIMCALL_ISS !! 460 default y if !ALPHA_EV67
481 depends on XTENSA_PLATFORM_ISS <<
482 help <<
483 Choose semihosting interface that wi <<
484 block device and networking. <<
485 461
486 config XTENSA_SIMCALL_ISS !! 462 config ALPHA_AVANTI
487 bool "simcall" !! 463 bool
>> 464 depends on ALPHA_XL || ALPHA_AVANTI_CH
>> 465 default y
488 help 466 help
489 Use simcall instruction. simcall is !! 467 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
490 it does nothing on hardware. !! 468 Alphas. Info at
>> 469 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
>> 470
>> 471 config ALPHA_BROKEN_IRQ_MASK
>> 472 bool
>> 473 depends on ALPHA_GENERIC || ALPHA_PC164
>> 474 default y
491 475
492 config XTENSA_SIMCALL_GDBIO !! 476 config VGA_HOSE
493 bool "GDBIO" !! 477 bool
>> 478 depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI)
>> 479 default y
494 help 480 help
495 Use break instruction. It is availab !! 481 Support VGA on an arbitrary hose; needed for several platforms
496 is attached to it via JTAG. !! 482 which always have multiple hoses, and whose consoles support it.
497 483
498 endchoice <<
499 484
500 config BLK_DEV_SIMDISK !! 485 config ALPHA_QEMU
501 tristate "Host file-based simulated bl !! 486 bool "Run under QEMU emulation"
502 default n !! 487 depends on !ALPHA_GENERIC
503 depends on XTENSA_PLATFORM_ISS && BLOC !! 488 ---help---
504 help !! 489 Assume the presence of special features supported by QEMU PALcode
505 Create block devices that map to fil !! 490 that reduce the overhead of system emulation.
506 Device binding to host file may be c !! 491
507 interface provided the device is not !! 492 Generic kernels will auto-detect QEMU. But when building a
508 !! 493 system-specific kernel, the assumption is that we want to
509 config BLK_DEV_SIMDISK_COUNT !! 494 eliminate as many runtime tests as possible.
510 int "Number of host file-based simulat <<
511 range 1 10 <<
512 depends on BLK_DEV_SIMDISK <<
513 default 2 <<
514 help <<
515 This is the default minimal number o <<
516 Kernel/module parameter 'simdisk_cou <<
517 value at runtime. More file names (b <<
518 specified as parameters, simdisk_cou <<
519 <<
520 config SIMDISK0_FILENAME <<
521 string "Host filename for the first si <<
522 depends on BLK_DEV_SIMDISK = y <<
523 default "" <<
524 help <<
525 Attach a first simdisk to a host fil <<
526 contains a root file system. <<
527 <<
528 config SIMDISK1_FILENAME <<
529 string "Host filename for the second s <<
530 depends on BLK_DEV_SIMDISK = y && BLK_ <<
531 default "" <<
532 help <<
533 Another simulated disk in a host fil <<
534 storage. <<
535 <<
536 config XTFPGA_LCD <<
537 bool "Enable XTFPGA LCD driver" <<
538 depends on XTENSA_PLATFORM_XTFPGA <<
539 default n <<
540 help <<
541 There's a 2x16 LCD on most of XTFPGA <<
542 progress messages there during bootu <<
543 during board bringup. <<
544 495
545 If unsure, say N. 496 If unsure, say N.
546 497
547 config XTFPGA_LCD_BASE_ADDR !! 498
548 hex "XTFPGA LCD base address" !! 499 config ALPHA_SRM
549 depends on XTFPGA_LCD !! 500 bool "Use SRM as bootloader" if ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_NAUTILUS || ALPHA_NONAME
550 default "0x0d0c0000" !! 501 depends on TTY
551 help !! 502 default y if ALPHA_JENSEN || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_DP264 || ALPHA_RAWHIDE || ALPHA_EIGER || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
552 Base address of the LCD controller i !! 503 ---help---
553 Different boards from XTFPGA family !! 504 There are two different types of booting firmware on Alphas: SRM,
554 addresses. Please consult prototypin !! 505 which is command line driven, and ARC, which uses menus and arrow
555 the correct address. Wrong address h !! 506 keys. Details about the Linux/Alpha booting process are contained in
556 !! 507 the Linux/Alpha FAQ, accessible on the WWW from
557 config XTFPGA_LCD_8BIT_ACCESS !! 508 <http://www.alphalinux.org/>.
558 bool "Use 8-bit access to XTFPGA LCD" !! 509
559 depends on XTFPGA_LCD !! 510 The usual way to load Linux on an Alpha machine is to use MILO
560 default n !! 511 (a bootloader that lets you pass command line parameters to the
561 help !! 512 kernel just like lilo does for the x86 architecture) which can be
562 LCD may be connected with 4- or 8-bi !! 513 loaded either from ARC or can be installed directly as a permanent
563 only be used with 8-bit interface. P !! 514 firmware replacement from floppy (which requires changing a certain
564 guide for your board for the correct !! 515 jumper on the motherboard). If you want to do either of these, say N
565 !! 516 here. If MILO doesn't work on your system (true for Jensen
566 comment "Kernel memory layout" !! 517 motherboards), you can bypass it altogether and boot Linux directly
567 !! 518 from an SRM console; say Y here in order to do that. Note that you
568 config INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX !! 519 won't be able to boot from an IDE disk using SRM.
569 bool "Initialize Xtensa MMU inside the <<
570 depends on !XTENSA_VARIANT_FSF && !XTE <<
571 default y if XTENSA_VARIANT_DC233C || <<
572 help <<
573 Earlier version initialized the MMU <<
574 before jumping to _startup in head.S <<
575 it was possible to place a software <<
576 then enter your normal kernel breakp <<
577 to the kernel mappings (0XC0000000). <<
578 <<
579 This unfortunately won't work for U- <<
580 work for using KEXEC to have a hot k <<
581 KDUMP. <<
582 <<
583 So now the MMU is initialized in hea <<
584 use hardware breakpoints (gdb 'hbrea <<
585 xt-gdb can't place a Software Breakp <<
586 to mapping the MMU and after mapping <<
587 was mapped gdb wouldn't remove the b <<
588 PC wouldn't match. Since Hardware Br <<
589 Linux configurations it seems reason <<
590 and leave this older mechanism for u <<
591 not to follow Tensilica's recommenda <<
592 <<
593 Selecting this will cause U-Boot to <<
594 address at 0x00003000 instead of the <<
595 <<
596 If in doubt, say Y. <<
597 <<
598 config XIP_KERNEL <<
599 bool "Kernel Execute-In-Place from ROM <<
600 depends on PLATFORM_HAVE_XIP <<
601 help <<
602 Execute-In-Place allows the kernel t <<
603 directly addressable by the CPU, suc <<
604 space since the text section of the <<
605 to RAM. Read-write sections, such as <<
606 are still copied to RAM. The XIP ker <<
607 it has to run directly from flash, s <<
608 store it. The flash address used to <<
609 and for storing it, is configuration <<
610 say Y here, you must know the proper <<
611 store the kernel image depending on <<
612 <<
613 Also note that the make target becom <<
614 "make Image" or "make uImage". The f <<
615 ROM memory will be arch/xtensa/boot/ <<
616 520
617 If unsure, say N. 521 If unsure, say N.
618 522
619 config MEMMAP_CACHEATTR !! 523 config ARCH_MAY_HAVE_PC_FDC
620 hex "Cache attributes for the memory a !! 524 def_bool y
621 depends on !MMU <<
622 default 0x22222222 <<
623 help <<
624 These cache attributes are set up fo <<
625 specifies cache attributes for the c <<
626 region: bits 0..3 -- for addresses 0 <<
627 bits 4..7 -- for addresses 0x2000000 <<
628 <<
629 Cache attribute values are specific <<
630 For region protection MMUs: <<
631 1: WT cached, <<
632 2: cache bypass, <<
633 4: WB cached, <<
634 f: illegal. <<
635 For full MMU: <<
636 bit 0: executable, <<
637 bit 1: writable, <<
638 bits 2..3: <<
639 0: cache bypass, <<
640 1: WB cache, <<
641 2: WT cache, <<
642 3: special (c and e are illegal, <<
643 For MPU: <<
644 0: illegal, <<
645 1: WB cache, <<
646 2: WB, no-write-allocate cache, <<
647 3: WT cache, <<
648 4: cache bypass. <<
649 <<
650 config KSEG_PADDR <<
651 hex "Physical address of the KSEG mapp <<
652 depends on INITIALIZE_XTENSA_MMU_INSID <<
653 default 0x00000000 <<
654 help <<
655 This is the physical address where K <<
656 the chosen KSEG layout help for the <<
657 Unpacked kernel image (including vec <<
658 within KSEG. <<
659 Physical memory below this address i <<
660 <<
661 If unsure, leave the default value h <<
662 <<
663 config KERNEL_VIRTUAL_ADDRESS <<
664 hex "Kernel virtual address" <<
665 depends on MMU && XIP_KERNEL <<
666 default 0xd0003000 <<
667 help <<
668 This is the virtual address where th <<
669 XIP kernel may be mapped into KSEG o <<
670 provided here must match kernel load <<
671 KERNEL_LOAD_ADDRESS. <<
672 <<
673 config KERNEL_LOAD_ADDRESS <<
674 hex "Kernel load address" <<
675 default 0x60003000 if !MMU <<
676 default 0x00003000 if MMU && INITIALIZ <<
677 default 0xd0003000 if MMU && !INITIALI <<
678 help <<
679 This is the address where the kernel <<
680 It is virtual address for MMUv2 conf <<
681 for all other configurations. <<
682 525
683 If unsure, leave the default value h !! 526 config SMP
>> 527 bool "Symmetric multi-processing support"
>> 528 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
>> 529 ---help---
>> 530 This enables support for systems with more than one CPU. If you have
>> 531 a system with only one CPU, say N. If you have a system with more
>> 532 than one CPU, say Y.
>> 533
>> 534 If you say N here, the kernel will run on uni- and multiprocessor
>> 535 machines, but will use only one CPU of a multiprocessor machine. If
>> 536 you say Y here, the kernel will run on many, but not all,
>> 537 uniprocessor machines. On a uniprocessor machine, the kernel
>> 538 will run faster if you say N here.
684 539
685 choice !! 540 See also the SMP-HOWTO available at
686 prompt "Relocatable vectors location" !! 541 <http://www.tldp.org/docs.html#howto>.
687 default XTENSA_VECTORS_IN_TEXT <<
688 help <<
689 Choose whether relocatable vectors a <<
690 or placed separately at runtime. Thi <<
691 configurations without VECBASE regis <<
692 placed at their hardware-defined loc <<
693 <<
694 config XTENSA_VECTORS_IN_TEXT <<
695 bool "Merge relocatable vectors into k <<
696 depends on !MTD_XIP <<
697 help <<
698 This option puts relocatable vectors <<
699 with proper alignment. <<
700 This is a safe choice for most confi <<
701 <<
702 config XTENSA_VECTORS_SEPARATE <<
703 bool "Put relocatable vectors at fixed <<
704 help <<
705 This option puts relocatable vectors <<
706 Vectors are merged with the .init da <<
707 are copied into their designated loc <<
708 Use it to put vectors into IRAM or o <<
709 XIP-aware MTD support. <<
710 542
711 endchoice !! 543 If you don't know what to do here, say N.
712 544
713 config VECTORS_ADDR !! 545 config NR_CPUS
714 hex "Kernel vectors virtual address" !! 546 int "Maximum number of CPUs (2-32)"
715 default 0x00000000 !! 547 range 2 32
716 depends on XTENSA_VECTORS_SEPARATE !! 548 depends on SMP
717 help !! 549 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
718 This is the virtual address of the ( !! 550 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
719 It must be within KSEG if MMU is use <<
720 <<
721 config XIP_DATA_ADDR <<
722 hex "XIP kernel data virtual address" <<
723 depends on XIP_KERNEL <<
724 default 0x00000000 <<
725 help <<
726 This is the virtual address where XI <<
727 It must be within KSEG if MMU is use <<
728 <<
729 config PLATFORM_WANT_DEFAULT_MEM <<
730 def_bool n <<
731 <<
732 config DEFAULT_MEM_START <<
733 hex <<
734 prompt "PAGE_OFFSET/PHYS_OFFSET" if !M <<
735 default 0x60000000 if PLATFORM_WANT_DE <<
736 default 0x00000000 <<
737 help 551 help
738 This is the base address used for bo !! 552 MARVEL support can handle a maximum of 32 CPUs, all the others
739 in noMMU configurations. !! 553 with working support have a maximum of 4 CPUs.
740 554
741 If unsure, leave the default value h !! 555 config ARCH_DISCONTIGMEM_ENABLE
>> 556 bool "Discontiguous Memory Support"
>> 557 help
>> 558 Say Y to support efficient handling of discontiguous physical memory,
>> 559 for architectures which are either NUMA (Non-Uniform Memory Access)
>> 560 or have huge holes in the physical address space for other reasons.
>> 561 See <file:Documentation/vm/numa.rst> for more.
>> 562
>> 563 config NUMA
>> 564 bool "NUMA Support (EXPERIMENTAL)"
>> 565 depends on DISCONTIGMEM && BROKEN
>> 566 help
>> 567 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
>> 568 Access). This option is for configuring high-end multiprocessor
>> 569 server machines. If in doubt, say N.
>> 570
>> 571 config ALPHA_WTINT
>> 572 bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC
>> 573 default y if ALPHA_QEMU
>> 574 default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA)
>> 575 default n if !ALPHA_SRM && !ALPHA_GENERIC
>> 576 default y if SMP
>> 577 ---help---
>> 578 The Wait for Interrupt (WTINT) PALcall attempts to place the CPU
>> 579 to sleep until the next interrupt. This may reduce the power
>> 580 consumed, and the heat produced by the computer. However, it has
>> 581 the side effect of making the cycle counter unreliable as a timing
>> 582 device across the sleep.
742 583
743 choice !! 584 For emulation under QEMU, definitely say Y here, as we have other
744 prompt "KSEG layout" !! 585 mechanisms for measuring time than the cycle counter.
745 depends on MMU <<
746 default XTENSA_KSEG_MMU_V2 <<
747 <<
748 config XTENSA_KSEG_MMU_V2 <<
749 bool "MMUv2: 128MB cached + 128MB unca <<
750 help <<
751 MMUv2 compatible kernel memory map: <<
752 at KSEG_PADDR to 0xd0000000 with cac <<
753 without cache. <<
754 KSEG_PADDR must be aligned to 128MB. <<
755 <<
756 config XTENSA_KSEG_256M <<
757 bool "256MB cached + 256MB uncached" <<
758 depends on INITIALIZE_XTENSA_MMU_INSID <<
759 help <<
760 TLB way 6 maps 256MB starting at KSE <<
761 with cache and to 0xc0000000 without <<
762 KSEG_PADDR must be aligned to 256MB. <<
763 <<
764 config XTENSA_KSEG_512M <<
765 bool "512MB cached + 512MB uncached" <<
766 depends on INITIALIZE_XTENSA_MMU_INSID <<
767 help <<
768 TLB way 6 maps 512MB starting at KSE <<
769 with cache and to 0xc0000000 without <<
770 KSEG_PADDR must be aligned to 256MB. <<
771 586
772 endchoice !! 587 For EV4 (but not LCA), EV5 and EV56 systems, or for systems running
>> 588 MILO, sleep mode is not supported so you might as well say N here.
773 589
774 config HIGHMEM !! 590 For SMP systems we cannot use the cycle counter for timing anyway,
775 bool "High Memory Support" !! 591 so you might as well say Y here.
776 depends on MMU <<
777 select KMAP_LOCAL <<
778 help <<
779 Linux can use the full amount of RAM <<
780 default. However, the default MMUv2 <<
781 lowermost 128 MB of memory linearly <<
782 at 0xd0000000 (cached) and 0xd800000 <<
783 When there are more than 128 MB memo <<
784 all of it can be "permanently mapped <<
785 The physical memory that's not perma <<
786 "high memory". <<
787 <<
788 If you are compiling a kernel which <<
789 machine with more than 128 MB total <<
790 N here. <<
791 <<
792 If unsure, say Y. <<
793 <<
794 config ARCH_FORCE_MAX_ORDER <<
795 int "Order of maximal physically conti <<
796 default "10" <<
797 help <<
798 The kernel page allocator limits the <<
799 contiguous allocations. The limit is <<
800 defines the maximal power of two of <<
801 allocated as a single contiguous blo <<
802 overriding the default setting when <<
803 large blocks of physically contiguou <<
804 592
805 Don't change if unsure. !! 593 If unsure, say N.
806 594
807 endmenu !! 595 config NODES_SHIFT
>> 596 int
>> 597 default "7"
>> 598 depends on NEED_MULTIPLE_NODES
808 599
809 menu "Power management options" !! 600 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
>> 601 config ALPHA_LARGE_VMALLOC
>> 602 bool
>> 603 ---help---
>> 604 Process creation and other aspects of virtual memory management can
>> 605 be streamlined if we restrict the kernel to one PGD for all vmalloc
>> 606 allocations. This equates to about 8GB.
>> 607
>> 608 Under normal circumstances, this is so far and above what is needed
>> 609 as to be laughable. However, there are certain applications (such
>> 610 as benchmark-grade in-kernel web serving) that can make use of as
>> 611 much vmalloc space as is available.
>> 612
>> 613 Say N unless you know you need gobs and gobs of vmalloc space.
>> 614
>> 615 config VERBOSE_MCHECK
>> 616 bool "Verbose Machine Checks"
>> 617
>> 618 config VERBOSE_MCHECK_ON
>> 619 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
>> 620 depends on VERBOSE_MCHECK
>> 621 default 1
>> 622 ---help---
>> 623 This option allows the default printing mode to be set, and then
>> 624 possibly overridden by a boot command argument.
>> 625
>> 626 For example, if one wanted the option of printing verbose
>> 627 machine checks, but wanted the default to be as if verbose
>> 628 machine check printing was turned off, then one would choose
>> 629 the printing mode to be 0. Then, upon reboot, one could add
>> 630 the boot command line "verbose_mcheck=1" to get the normal
>> 631 verbose machine check printing, or "verbose_mcheck=2" to get
>> 632 the maximum information available.
810 633
811 config ARCH_HIBERNATION_POSSIBLE !! 634 Take the default (1) unless you want more control or more info.
812 def_bool y !! 635
>> 636 choice
>> 637 prompt "Timer interrupt frequency (HZ)?"
>> 638 default HZ_128 if ALPHA_QEMU
>> 639 default HZ_1200 if ALPHA_RAWHIDE
>> 640 default HZ_1024
>> 641 ---help---
>> 642 The frequency at which timer interrupts occur. A high frequency
>> 643 minimizes latency, whereas a low frequency minimizes overhead of
>> 644 process accounting. The later effect is especially significant
>> 645 when being run under QEMU.
>> 646
>> 647 Note that some Alpha hardware cannot change the interrupt frequency
>> 648 of the timer. If unsure, say 1024 (or 1200 for Rawhide).
>> 649
>> 650 config HZ_32
>> 651 bool "32 Hz"
>> 652 config HZ_64
>> 653 bool "64 Hz"
>> 654 config HZ_128
>> 655 bool "128 Hz"
>> 656 config HZ_256
>> 657 bool "256 Hz"
>> 658 config HZ_1024
>> 659 bool "1024 Hz"
>> 660 config HZ_1200
>> 661 bool "1200 Hz"
>> 662 endchoice
813 663
814 source "kernel/power/Kconfig" !! 664 config HZ
>> 665 int
>> 666 default 32 if HZ_32
>> 667 default 64 if HZ_64
>> 668 default 128 if HZ_128
>> 669 default 256 if HZ_256
>> 670 default 1200 if HZ_1200
>> 671 default 1024
>> 672
>> 673 config SRM_ENV
>> 674 tristate "SRM environment through procfs"
>> 675 depends on PROC_FS
>> 676 ---help---
>> 677 If you enable this option, a subdirectory inside /proc called
>> 678 /proc/srm_environment will give you access to the all important
>> 679 SRM environment variables (those which have a name) and also
>> 680 to all others (by their internal number).
>> 681
>> 682 SRM is something like a BIOS for Alpha machines. There are some
>> 683 other such BIOSes, like AlphaBIOS, which this driver cannot
>> 684 support (hey, that's not SRM!).
>> 685
>> 686 Despite the fact that this driver doesn't work on all Alphas (but
>> 687 only on those which have SRM as their firmware), it's save to
>> 688 build it even if your particular machine doesn't know about SRM
>> 689 (or if you intend to compile a generic kernel). It will simply
>> 690 not create those subdirectory in /proc (and give you some warning,
>> 691 of course).
>> 692
>> 693 This driver is also available as a module and will be called
>> 694 srm_env then.
815 695
816 endmenu 696 endmenu
>> 697
>> 698 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
>> 699 # but we also need it if VGA_HOSE is set
>> 700 config DUMMY_CONSOLE
>> 701 bool
>> 702 depends on VGA_HOSE
>> 703 default y
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