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 select MMU_GATHER_NO_RANGE
62 primarily for embedded systems. The !! 40 help
63 configurable and extensible. The Li !! 41 The Alpha is a 64-bit general-purpose processor designed and
64 architecture supports all processor !! 42 marketed by the Digital Equipment Corporation of blessed memory,
65 with reasonable minimum requirements !! 43 now Hewlett-Packard. The Alpha Linux project has a home page at
66 a home page at <http://www.linux-xte !! 44 <http://www.alphalinux.org/>.
67 45
68 config GENERIC_HWEIGHT !! 46 config 64BIT
69 def_bool y 47 def_bool y
70 48
>> 49 config MMU
>> 50 bool
>> 51 default y
>> 52
71 config ARCH_HAS_ILOG2_U32 53 config ARCH_HAS_ILOG2_U32
72 def_bool n !! 54 bool
>> 55 default n
73 56
74 config ARCH_HAS_ILOG2_U64 57 config ARCH_HAS_ILOG2_U64
75 def_bool n !! 58 bool
>> 59 default n
76 60
77 config ARCH_MTD_XIP !! 61 config GENERIC_CALIBRATE_DELAY
78 def_bool y !! 62 bool
>> 63 default y
79 64
80 config NO_IOPORT_MAP !! 65 config ZONE_DMA
81 def_bool n !! 66 bool
>> 67 default y
82 68
83 config HZ !! 69 config GENERIC_ISA_DMA
>> 70 bool
>> 71 default y
>> 72
>> 73 config PGTABLE_LEVELS
84 int 74 int
85 default 100 !! 75 default 3
86 76
87 config LOCKDEP_SUPPORT !! 77 config AUDIT_ARCH
88 def_bool y !! 78 bool
89 79
90 config STACKTRACE_SUPPORT !! 80 menu "System setup"
91 def_bool y <<
92 81
93 config MMU !! 82 choice
94 def_bool n !! 83 prompt "Alpha system type"
95 select PFAULT !! 84 default ALPHA_GENERIC
>> 85 ---help---
>> 86 This is the system type of your hardware. A "generic" kernel will
>> 87 run on any supported Alpha system. However, if you configure a
>> 88 kernel for your specific system, it will be faster and smaller.
96 89
97 config HAVE_XTENSA_GPIO32 !! 90 To find out what type of Alpha system you have, you may want to
98 def_bool n !! 91 check out the Linux/Alpha FAQ, accessible on the WWW from
>> 92 <http://www.alphalinux.org/>. In summary:
99 93
100 config KASAN_SHADOW_OFFSET !! 94 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
101 hex !! 95 Alpha-XL XL-233, XL-266
102 default 0x6e400000 !! 96 AlphaBook1 Alpha laptop
>> 97 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
>> 98 Cabriolet AlphaPC64, AlphaPCI64
>> 99 DP264 DP264 / DS20 / ES40 / DS10 / DS10L
>> 100 EB164 EB164 21164 evaluation board
>> 101 EB64+ EB64+ 21064 evaluation board
>> 102 EB66 EB66 21066 evaluation board
>> 103 EB66+ EB66+ 21066 evaluation board
>> 104 Jensen DECpc 150, DEC 2000 models 300, 500
>> 105 LX164 AlphaPC164-LX
>> 106 Lynx AS 2100A
>> 107 Miata Personal Workstation 433/500/600 a/au
>> 108 Marvel AlphaServer ES47 / ES80 / GS1280
>> 109 Mikasa AS 1000
>> 110 Noname AXPpci33, UDB (Multia)
>> 111 Noritake AS 1000A, AS 600A, AS 800
>> 112 PC164 AlphaPC164
>> 113 Rawhide AS 1200, AS 4000, AS 4100
>> 114 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
>> 115 SX164 AlphaPC164-SX
>> 116 Sable AS 2000, AS 2100
>> 117 Shark DS 20L
>> 118 Takara Takara (OEM)
>> 119 Titan AlphaServer ES45 / DS25 / DS15
>> 120 Wildfire AlphaServer GS 40/80/160/320
103 121
104 config CPU_BIG_ENDIAN !! 122 If you don't know what to do, choose "generic".
105 def_bool $(success,test "$(shell,echo <<
106 123
107 config CPU_LITTLE_ENDIAN !! 124 config ALPHA_GENERIC
108 def_bool !CPU_BIG_ENDIAN !! 125 bool "Generic"
>> 126 depends on TTY
>> 127 select HAVE_EISA
>> 128 help
>> 129 A generic kernel will run on all supported Alpha hardware.
109 130
110 config CC_HAVE_CALL0_ABI !! 131 config ALPHA_ALCOR
111 def_bool $(success,test "$(shell,echo !! 132 bool "Alcor/Alpha-XLT"
>> 133 select HAVE_EISA
>> 134 help
>> 135 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
>> 136 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
>> 137 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
>> 138 controller (256-bit memory bus) and a PCI interface. It also does
>> 139 all the work required to support an external Bcache and to maintain
>> 140 memory coherence when a PCI device DMAs into (or out of) memory.
112 141
113 menu "Processor type and features" !! 142 config ALPHA_XL
>> 143 bool "Alpha-XL"
>> 144 help
>> 145 XL-233 and XL-266-based Alpha systems.
114 146
115 choice !! 147 config ALPHA_BOOK1
116 prompt "Xtensa Processor Configuration !! 148 bool "AlphaBook1"
117 default XTENSA_VARIANT_FSF !! 149 help
>> 150 Dec AlphaBook1/Burns Alpha-based laptops.
118 151
119 config XTENSA_VARIANT_FSF !! 152 config ALPHA_AVANTI_CH
120 bool "fsf - default (not generic) conf !! 153 bool "Avanti"
121 select MMU <<
122 154
123 config XTENSA_VARIANT_DC232B !! 155 config ALPHA_CABRIOLET
124 bool "dc232b - Diamond 232L Standard C !! 156 bool "Cabriolet"
125 select MMU <<
126 select HAVE_XTENSA_GPIO32 <<
127 help 157 help
128 This variant refers to Tensilica's D !! 158 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
>> 159 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
>> 160 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
>> 161 Bcache SIMMs. Requires power supply with 3.3V output.
129 162
130 config XTENSA_VARIANT_DC233C !! 163 config ALPHA_DP264
131 bool "dc233c - Diamond 233L Standard C !! 164 bool "DP264"
132 select MMU <<
133 select HAVE_XTENSA_GPIO32 <<
134 help 165 help
135 This variant refers to Tensilica's D !! 166 Various 21264 systems with the tsunami core logic chipset.
>> 167 API Networks: 264DP, UP2000(+), CS20;
>> 168 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
136 169
137 config XTENSA_VARIANT_CUSTOM !! 170 config ALPHA_EB164
138 bool "Custom Xtensa processor configur !! 171 bool "EB164"
139 select HAVE_XTENSA_GPIO32 <<
140 help 172 help
141 Select this variant to use a custom !! 173 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
142 You will be prompted for a processor !! 174 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
143 endchoice !! 175 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
>> 176 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
>> 177 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
>> 178 motherboard. Requires power supply with 3.3V output.
144 179
145 config XTENSA_VARIANT_CUSTOM_NAME !! 180 config ALPHA_EB64P_CH
146 string "Xtensa Processor Custom Core V !! 181 bool "EB64+"
147 depends on XTENSA_VARIANT_CUSTOM !! 182
148 help !! 183 config ALPHA_EB66
149 Provide the name of a custom Xtensa !! 184 bool "EB66"
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 185 help
174 Enable if core variant has Performan !! 186 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
175 External Registers Interface. !! 187 identical to EB64+. Baby PC-AT size. Runs from standard PC power
>> 188 supply. The EB66 schematic was published as a marketing poster
>> 189 advertising the 21066 as "the first microprocessor in the world with
>> 190 embedded PCI".
176 191
177 If unsure, say N. !! 192 config ALPHA_EB66P
>> 193 bool "EB66+"
>> 194 help
>> 195 Later variant of the EB66 board.
178 196
179 config XTENSA_FAKE_NMI !! 197 config ALPHA_EIGER
180 bool "Treat PMM IRQ as NMI" !! 198 bool "Eiger"
181 depends on XTENSA_VARIANT_HAVE_PERF_EV <<
182 default n <<
183 help 199 help
184 If PMM IRQ is the only IRQ at EXCM l !! 200 Apparently an obscure OEM single-board computer based on the
185 treat it as NMI, which improves accu !! 201 Typhoon/Tsunami chipset family. Information on it is scanty.
186 202
187 If there are other interrupts at or !! 203 config ALPHA_JENSEN
188 but not above the EXCM level, PMM IR !! 204 bool "Jensen"
189 but only if these IRQs are not used. !! 205 depends on BROKEN
190 saying that this is not safe, and a !! 206 select HAVE_EISA
191 actually fire. !! 207 help
>> 208 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
>> 209 of the first-generation Alpha systems. A number of these systems
>> 210 seem to be available on the second- hand market. The Jensen is a
>> 211 floor-standing tower system which originally used a 150MHz 21064 It
>> 212 used programmable logic to interface a 486 EISA I/O bridge to the
>> 213 CPU.
192 214
193 If unsure, say N. !! 215 config ALPHA_LX164
>> 216 bool "LX164"
>> 217 help
>> 218 A technical overview of this board is available at
>> 219 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
194 220
195 config PFAULT !! 221 config ALPHA_LYNX
196 bool "Handle protection faults" if EXP !! 222 bool "Lynx"
197 default y !! 223 select HAVE_EISA
198 help 224 help
199 Handle protection faults. MMU config !! 225 AlphaServer 2100A-based systems.
200 noMMU configurations may disable it <<
201 generates protection faults or fault <<
202 226
203 If unsure, say Y. !! 227 config ALPHA_MARVEL
>> 228 bool "Marvel"
>> 229 help
>> 230 AlphaServer ES47 / ES80 / GS1280 based on EV7.
204 231
205 config XTENSA_UNALIGNED_USER !! 232 config ALPHA_MIATA
206 bool "Unaligned memory access in user !! 233 bool "Miata"
>> 234 select HAVE_EISA
207 help 235 help
208 The Xtensa architecture currently do !! 236 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
209 memory accesses in hardware but thro !! 237 or 600au).
210 Per default, unaligned memory access <<
211 238
212 Say Y here to enable unaligned memor !! 239 config ALPHA_MIKASA
>> 240 bool "Mikasa"
>> 241 help
>> 242 AlphaServer 1000-based Alpha systems.
213 243
214 config XTENSA_LOAD_STORE !! 244 config ALPHA_NAUTILUS
215 bool "Load/store exception handler for !! 245 bool "Nautilus"
216 help 246 help
217 The Xtensa architecture only allows !! 247 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
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 <<
222 248
223 Say Y here to enable exception handl !! 249 config ALPHA_NONAME_CH
224 byte and 2-byte access to memory att !! 250 bool "Noname"
225 251
226 config HAVE_SMP !! 252 config ALPHA_NORITAKE
227 bool "System Supports SMP (MX)" !! 253 bool "Noritake"
228 depends on XTENSA_VARIANT_CUSTOM !! 254 select HAVE_EISA
229 select XTENSA_MX <<
230 help 255 help
231 This option is used to indicate that !! 256 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
232 supports Multiprocessing. Multiproce !! 257 systems.
233 the CPU core definition and currentl <<
234 258
235 Multiprocessor support is implemente !! 259 config ALPHA_PC164
236 interrupt controllers. !! 260 bool "PC164"
237 261
238 The MX interrupt distributer adds In !! 262 config ALPHA_P2K
239 and causes the IRQ numbers to be inc !! 263 bool "Platform2000"
240 like the open cores ethernet driver <<
241 264
242 You still have to select "Enable SMP !! 265 config ALPHA_RAWHIDE
243 !! 266 bool "Rawhide"
244 config SMP !! 267 select HAVE_EISA
245 bool "Enable Symmetric multi-processin <<
246 depends on HAVE_SMP <<
247 select GENERIC_SMP_IDLE_THREAD <<
248 help 268 help
249 Enabled SMP Software; allows more th !! 269 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
250 to be activated during startup. !! 270 See HOWTO at
251 !! 271 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
252 config NR_CPUS <<
253 depends on SMP <<
254 int "Maximum number of CPUs (2-32)" <<
255 range 2 32 <<
256 default "4" <<
257 272
258 config HOTPLUG_CPU !! 273 config ALPHA_RUFFIAN
259 bool "Enable CPU hotplug support" !! 274 bool "Ruffian"
260 depends on SMP <<
261 help 275 help
262 Say Y here to allow turning CPUs off !! 276 Samsung APC164UX. There is a page on known problems and workarounds
263 controlled through /sys/devices/syst !! 277 at <http://www.alphalinux.org/faq/FAQ-11.html>.
264 278
265 Say N if you want to disable CPU hot !! 279 config ALPHA_RX164
>> 280 bool "RX164"
266 281
267 config SECONDARY_RESET_VECTOR !! 282 config ALPHA_SX164
268 bool "Secondary cores use alternative !! 283 bool "SX164"
269 default y <<
270 depends on HAVE_SMP <<
271 help <<
272 Secondary cores may be configured to <<
273 or all cores may use primary reset v <<
274 Say Y here to supply handler for the <<
275 284
276 config FAST_SYSCALL_XTENSA !! 285 config ALPHA_SABLE
277 bool "Enable fast atomic syscalls" !! 286 bool "Sable"
278 default n !! 287 select HAVE_EISA
279 help 288 help
280 fast_syscall_xtensa is a syscall tha !! 289 Digital AlphaServer 2000 and 2100-based systems.
281 on UP kernel when processor has no s <<
282 290
283 This syscall is deprecated. It may h !! 291 config ALPHA_SHARK
284 invalid arguments. It is provided on !! 292 bool "Shark"
285 Only enable it if your userspace sof <<
286 293
287 If unsure, say N. !! 294 config ALPHA_TAKARA
288 !! 295 bool "Takara"
289 config FAST_SYSCALL_SPILL_REGISTERS <<
290 bool "Enable spill registers syscall" <<
291 default n <<
292 help 296 help
293 fast_syscall_spill_registers is a sy !! 297 Alpha 11164-based OEM single-board computer.
294 register windows of a calling usersp <<
295 298
296 This syscall is deprecated. It may h !! 299 config ALPHA_TITAN
297 invalid arguments. It is provided on !! 300 bool "Titan"
298 Only enable it if your userspace sof !! 301 help
299 !! 302 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
300 If unsure, say N. <<
301 303
302 choice !! 304 config ALPHA_WILDFIRE
303 prompt "Kernel ABI" !! 305 bool "Wildfire"
304 default KERNEL_ABI_DEFAULT <<
305 help 306 help
306 Select ABI for the kernel code. This !! 307 AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
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. <<
331 308
332 endchoice 309 endchoice
333 310
334 config USER_ABI_CALL0 !! 311 # clear all implied options (don't want default values for those):
>> 312 # Most of these machines have ISA slots; not exactly sure which don't,
>> 313 # and this doesn't activate hordes of code, so do it always.
>> 314 config ISA
335 bool 315 bool
336 !! 316 default y
337 choice <<
338 prompt "Userspace ABI" <<
339 default USER_ABI_DEFAULT <<
340 help 317 help
341 Select supported userspace ABI. !! 318 Find out whether you have ISA slots on your motherboard. ISA is the
342 !! 319 name of a bus system, i.e. the way the CPU talks to the other stuff
343 If unsure, choose the default ABI. !! 320 inside your box. Other bus systems are PCI, EISA, MicroChannel
>> 321 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
>> 322 newer boards don't support it. If you have ISA, say Y, otherwise N.
344 323
345 config USER_ABI_DEFAULT !! 324 config ISA_DMA_API
346 bool "Default ABI only" !! 325 bool
347 help !! 326 default y
348 Assume default userspace ABI. For XE <<
349 call0 ABI binaries may be run on suc <<
350 will not work correctly for them. <<
351 327
352 config USER_ABI_CALL0_ONLY !! 328 config ALPHA_NONAME
353 bool "Call0 ABI only" !! 329 bool
354 select USER_ABI_CALL0 !! 330 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
>> 331 default y
355 help 332 help
356 Select this option to support only c !! 333 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
357 Windowed ABI binaries will crash wit !! 334 UDB). This design was produced by Digital's Technical OEM (TOEM)
358 an illegal instruction exception on !! 335 group. It uses the 21066 processor running at 166MHz or 233MHz. It
>> 336 is a baby-AT size, and runs from a standard PC power supply. It has
>> 337 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
>> 338 2 versions, with either PS/2 or large DIN connectors for the
>> 339 keyboard.
359 340
360 Choose this option if you're plannin !! 341 config ALPHA_EV4
361 built with call0 ABI. !! 342 bool
362 !! 343 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
363 config USER_ABI_CALL0_PROBE !! 344 default y if !ALPHA_LYNX
364 bool "Support both windowed and call0 <<
365 select USER_ABI_CALL0 <<
366 help <<
367 Select this option to support both w <<
368 ABIs. When enabled all processes are <<
369 and a fast user exception handler fo <<
370 used to turn on PS.WOE bit on the fi <<
371 the userspace. <<
372 345
373 This option should be enabled for th !! 346 config ALPHA_LCA
374 both call0 and windowed ABIs in user !! 347 bool
>> 348 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
>> 349 default y
375 350
376 Note that Xtensa ISA does not guaran !! 351 config ALPHA_APECS
377 raise an illegal instruction excepti !! 352 bool
378 PS.WOE is disabled, check whether th !! 353 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
>> 354 default y
379 355
380 endchoice !! 356 config ALPHA_EB64P
>> 357 bool
>> 358 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
>> 359 default y
>> 360 help
>> 361 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
>> 362 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
>> 363 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
>> 364 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
>> 365 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
>> 366 Runs from standard PC power supply.
>> 367
>> 368 config ALPHA_EV5
>> 369 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
>> 370 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
381 371
382 endmenu !! 372 config ALPHA_EV4
>> 373 bool
>> 374 default y if ALPHA_LYNX && !ALPHA_EV5
383 375
384 config XTENSA_CALIBRATE_CCOUNT !! 376 config ALPHA_CIA
385 def_bool n !! 377 bool
386 help !! 378 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
387 On some platforms (XT2000, for examp !! 379 default y
388 vary. The frequency can be determin <<
389 against a well known, fixed frequenc <<
390 380
391 config SERIAL_CONSOLE !! 381 config ALPHA_EV56
392 def_bool n !! 382 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
>> 383 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
393 384
394 config PLATFORM_HAVE_XIP !! 385 config ALPHA_EV56
395 def_bool n !! 386 prompt "EV56 CPU (speed >= 333MHz)?"
>> 387 depends on ALPHA_NORITAKE || ALPHA_PRIMO
396 388
397 menu "Platform options" !! 389 config ALPHA_EV56
>> 390 prompt "EV56 CPU (speed >= 400MHz)?"
>> 391 depends on ALPHA_RAWHIDE
398 392
399 choice !! 393 config ALPHA_PRIMO
400 prompt "Xtensa System Type" !! 394 bool "EV5 CPU daughtercard (model 5/xxx)?"
401 default XTENSA_PLATFORM_ISS !! 395 depends on ALPHA_NORITAKE || ALPHA_MIKASA
>> 396 help
>> 397 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
402 398
403 config XTENSA_PLATFORM_ISS !! 399 config ALPHA_GAMMA
404 bool "ISS" !! 400 bool "EV5 CPU(s) (model 5/xxx)?"
405 select XTENSA_CALIBRATE_CCOUNT !! 401 depends on ALPHA_SABLE
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 2000 5/xxx or an AS 2100 5/xxx.
425 This hardware is capable of running <<
426 404
427 endchoice !! 405 config ALPHA_GAMMA
>> 406 bool
>> 407 depends on ALPHA_LYNX
>> 408 default y
428 409
429 config PLATFORM_NR_IRQS !! 410 config ALPHA_T2
430 int !! 411 bool
431 default 3 if XTENSA_PLATFORM_XT2000 !! 412 depends on ALPHA_SABLE || ALPHA_LYNX
432 default 0 !! 413 default y
433 414
434 config XTENSA_CPU_CLOCK !! 415 config ALPHA_PYXIS
435 int "CPU clock rate [MHz]" !! 416 bool
436 depends on !XTENSA_CALIBRATE_CCOUNT !! 417 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
437 default 16 !! 418 default y
438 419
439 config GENERIC_CALIBRATE_DELAY !! 420 config ALPHA_EV6
440 bool "Auto calibration of the BogoMIPS !! 421 bool
441 help !! 422 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
442 The BogoMIPS value can easily be der !! 423 default y
443 424
444 config CMDLINE_BOOL !! 425 config ALPHA_TSUNAMI
445 bool "Default bootloader kernel argume !! 426 bool
>> 427 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
>> 428 default y
446 429
447 config CMDLINE !! 430 config ALPHA_EV67
448 string "Initial kernel command string" !! 431 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
449 depends on CMDLINE_BOOL !! 432 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
450 default "console=ttyS0,38400 root=/dev <<
451 help 433 help
452 On some architectures (EBSA110 and C !! 434 Is this a machine based on the EV67 core? If in doubt, select N here
453 for the boot loader to pass argument !! 435 and the machine will be treated as an EV6.
454 architectures, you should supply som <<
455 time by entering them here. As a min <<
456 memory size and the root device (e.g <<
457 436
458 config USE_OF !! 437 config ALPHA_MCPCIA
459 bool "Flattened Device Tree support" !! 438 bool
460 select OF !! 439 depends on ALPHA_RAWHIDE
461 select OF_EARLY_FLATTREE !! 440 default y
462 help <<
463 Include support for flattened device <<
464 441
465 config BUILTIN_DTB_SOURCE !! 442 config ALPHA_POLARIS
466 string "DTB to build into the kernel i !! 443 bool
467 depends on OF !! 444 depends on ALPHA_RX164
>> 445 default y
468 446
469 config PARSE_BOOTPARAM !! 447 config ALPHA_IRONGATE
470 bool "Parse bootparam block" !! 448 bool
>> 449 depends on ALPHA_NAUTILUS
471 default y 450 default y
472 help <<
473 Parse parameters passed to the kerne <<
474 be disabled if the kernel is known t <<
475 451
476 If unsure, say Y. !! 452 config GENERIC_HWEIGHT
>> 453 bool
>> 454 default y if !ALPHA_EV67
477 455
478 choice !! 456 config ALPHA_AVANTI
479 prompt "Semihosting interface" !! 457 bool
480 default XTENSA_SIMCALL_ISS !! 458 depends on ALPHA_XL || ALPHA_AVANTI_CH
481 depends on XTENSA_PLATFORM_ISS !! 459 default y
482 help 460 help
483 Choose semihosting interface that wi !! 461 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
484 block device and networking. !! 462 Alphas. Info at
>> 463 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
485 464
486 config XTENSA_SIMCALL_ISS !! 465 config ALPHA_BROKEN_IRQ_MASK
487 bool "simcall" !! 466 bool
488 help !! 467 depends on ALPHA_GENERIC || ALPHA_PC164
489 Use simcall instruction. simcall is !! 468 default y
490 it does nothing on hardware. <<
491 469
492 config XTENSA_SIMCALL_GDBIO !! 470 config VGA_HOSE
493 bool "GDBIO" !! 471 bool
>> 472 depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI)
>> 473 default y
494 help 474 help
495 Use break instruction. It is availab !! 475 Support VGA on an arbitrary hose; needed for several platforms
496 is attached to it via JTAG. !! 476 which always have multiple hoses, and whose consoles support it.
497 477
498 endchoice <<
499 478
500 config BLK_DEV_SIMDISK !! 479 config ALPHA_QEMU
501 tristate "Host file-based simulated bl !! 480 bool "Run under QEMU emulation"
502 default n !! 481 depends on !ALPHA_GENERIC
503 depends on XTENSA_PLATFORM_ISS && BLOC !! 482 ---help---
504 help !! 483 Assume the presence of special features supported by QEMU PALcode
505 Create block devices that map to fil !! 484 that reduce the overhead of system emulation.
506 Device binding to host file may be c !! 485
507 interface provided the device is not !! 486 Generic kernels will auto-detect QEMU. But when building a
508 !! 487 system-specific kernel, the assumption is that we want to
509 config BLK_DEV_SIMDISK_COUNT !! 488 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. <<
544 489
545 If unsure, say N. 490 If unsure, say N.
546 491
547 config XTFPGA_LCD_BASE_ADDR !! 492
548 hex "XTFPGA LCD base address" !! 493 config ALPHA_SRM
549 depends on XTFPGA_LCD !! 494 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" !! 495 depends on TTY
551 help !! 496 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 !! 497 ---help---
553 Different boards from XTFPGA family !! 498 There are two different types of booting firmware on Alphas: SRM,
554 addresses. Please consult prototypin !! 499 which is command line driven, and ARC, which uses menus and arrow
555 the correct address. Wrong address h !! 500 keys. Details about the Linux/Alpha booting process are contained in
556 !! 501 the Linux/Alpha FAQ, accessible on the WWW from
557 config XTFPGA_LCD_8BIT_ACCESS !! 502 <http://www.alphalinux.org/>.
558 bool "Use 8-bit access to XTFPGA LCD" !! 503
559 depends on XTFPGA_LCD !! 504 The usual way to load Linux on an Alpha machine is to use MILO
560 default n !! 505 (a bootloader that lets you pass command line parameters to the
561 help !! 506 kernel just like lilo does for the x86 architecture) which can be
562 LCD may be connected with 4- or 8-bi !! 507 loaded either from ARC or can be installed directly as a permanent
563 only be used with 8-bit interface. P !! 508 firmware replacement from floppy (which requires changing a certain
564 guide for your board for the correct !! 509 jumper on the motherboard). If you want to do either of these, say N
565 !! 510 here. If MILO doesn't work on your system (true for Jensen
566 comment "Kernel memory layout" !! 511 motherboards), you can bypass it altogether and boot Linux directly
567 !! 512 from an SRM console; say Y here in order to do that. Note that you
568 config INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX !! 513 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/ <<
616 514
617 If unsure, say N. 515 If unsure, say N.
618 516
619 config MEMMAP_CACHEATTR !! 517 config ARCH_MAY_HAVE_PC_FDC
620 hex "Cache attributes for the memory a !! 518 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. <<
682 519
683 If unsure, leave the default value h !! 520 config SMP
>> 521 bool "Symmetric multi-processing support"
>> 522 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
>> 523 ---help---
>> 524 This enables support for systems with more than one CPU. If you have
>> 525 a system with only one CPU, say N. If you have a system with more
>> 526 than one CPU, say Y.
>> 527
>> 528 If you say N here, the kernel will run on uni- and multiprocessor
>> 529 machines, but will use only one CPU of a multiprocessor machine. If
>> 530 you say Y here, the kernel will run on many, but not all,
>> 531 uniprocessor machines. On a uniprocessor machine, the kernel
>> 532 will run faster if you say N here.
684 533
685 choice !! 534 See also the SMP-HOWTO available at
686 prompt "Relocatable vectors location" !! 535 <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. <<
710 536
711 endchoice !! 537 If you don't know what to do here, say N.
712 538
713 config VECTORS_ADDR !! 539 config NR_CPUS
714 hex "Kernel vectors virtual address" !! 540 int "Maximum number of CPUs (2-32)"
715 default 0x00000000 !! 541 range 2 32
716 depends on XTENSA_VECTORS_SEPARATE !! 542 depends on SMP
717 help !! 543 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
718 This is the virtual address of the ( !! 544 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 545 help
738 This is the base address used for bo !! 546 MARVEL support can handle a maximum of 32 CPUs, all the others
739 in noMMU configurations. !! 547 with working support have a maximum of 4 CPUs.
740 548
741 If unsure, leave the default value h !! 549 config ARCH_DISCONTIGMEM_ENABLE
>> 550 bool "Discontiguous Memory Support"
>> 551 help
>> 552 Say Y to support efficient handling of discontiguous physical memory,
>> 553 for architectures which are either NUMA (Non-Uniform Memory Access)
>> 554 or have huge holes in the physical address space for other reasons.
>> 555 See <file:Documentation/vm/numa.rst> for more.
>> 556
>> 557 config NUMA
>> 558 bool "NUMA Support (EXPERIMENTAL)"
>> 559 depends on DISCONTIGMEM && BROKEN
>> 560 help
>> 561 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
>> 562 Access). This option is for configuring high-end multiprocessor
>> 563 server machines. If in doubt, say N.
>> 564
>> 565 config ALPHA_WTINT
>> 566 bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC
>> 567 default y if ALPHA_QEMU
>> 568 default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA)
>> 569 default n if !ALPHA_SRM && !ALPHA_GENERIC
>> 570 default y if SMP
>> 571 ---help---
>> 572 The Wait for Interrupt (WTINT) PALcall attempts to place the CPU
>> 573 to sleep until the next interrupt. This may reduce the power
>> 574 consumed, and the heat produced by the computer. However, it has
>> 575 the side effect of making the cycle counter unreliable as a timing
>> 576 device across the sleep.
742 577
743 choice !! 578 For emulation under QEMU, definitely say Y here, as we have other
744 prompt "KSEG layout" !! 579 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. <<
771 580
772 endchoice !! 581 For EV4 (but not LCA), EV5 and EV56 systems, or for systems running
>> 582 MILO, sleep mode is not supported so you might as well say N here.
773 583
774 config HIGHMEM !! 584 For SMP systems we cannot use the cycle counter for timing anyway,
775 bool "High Memory Support" !! 585 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 <<
804 586
805 Don't change if unsure. !! 587 If unsure, say N.
806 588
807 endmenu !! 589 config NODES_SHIFT
>> 590 int
>> 591 default "7"
>> 592 depends on NEED_MULTIPLE_NODES
808 593
809 menu "Power management options" !! 594 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
>> 595 config ALPHA_LARGE_VMALLOC
>> 596 bool
>> 597 ---help---
>> 598 Process creation and other aspects of virtual memory management can
>> 599 be streamlined if we restrict the kernel to one PGD for all vmalloc
>> 600 allocations. This equates to about 8GB.
>> 601
>> 602 Under normal circumstances, this is so far and above what is needed
>> 603 as to be laughable. However, there are certain applications (such
>> 604 as benchmark-grade in-kernel web serving) that can make use of as
>> 605 much vmalloc space as is available.
>> 606
>> 607 Say N unless you know you need gobs and gobs of vmalloc space.
>> 608
>> 609 config VERBOSE_MCHECK
>> 610 bool "Verbose Machine Checks"
>> 611
>> 612 config VERBOSE_MCHECK_ON
>> 613 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
>> 614 depends on VERBOSE_MCHECK
>> 615 default 1
>> 616 ---help---
>> 617 This option allows the default printing mode to be set, and then
>> 618 possibly overridden by a boot command argument.
>> 619
>> 620 For example, if one wanted the option of printing verbose
>> 621 machine checks, but wanted the default to be as if verbose
>> 622 machine check printing was turned off, then one would choose
>> 623 the printing mode to be 0. Then, upon reboot, one could add
>> 624 the boot command line "verbose_mcheck=1" to get the normal
>> 625 verbose machine check printing, or "verbose_mcheck=2" to get
>> 626 the maximum information available.
810 627
811 config ARCH_HIBERNATION_POSSIBLE !! 628 Take the default (1) unless you want more control or more info.
812 def_bool y !! 629
>> 630 choice
>> 631 prompt "Timer interrupt frequency (HZ)?"
>> 632 default HZ_128 if ALPHA_QEMU
>> 633 default HZ_1200 if ALPHA_RAWHIDE
>> 634 default HZ_1024
>> 635 ---help---
>> 636 The frequency at which timer interrupts occur. A high frequency
>> 637 minimizes latency, whereas a low frequency minimizes overhead of
>> 638 process accounting. The later effect is especially significant
>> 639 when being run under QEMU.
>> 640
>> 641 Note that some Alpha hardware cannot change the interrupt frequency
>> 642 of the timer. If unsure, say 1024 (or 1200 for Rawhide).
>> 643
>> 644 config HZ_32
>> 645 bool "32 Hz"
>> 646 config HZ_64
>> 647 bool "64 Hz"
>> 648 config HZ_128
>> 649 bool "128 Hz"
>> 650 config HZ_256
>> 651 bool "256 Hz"
>> 652 config HZ_1024
>> 653 bool "1024 Hz"
>> 654 config HZ_1200
>> 655 bool "1200 Hz"
>> 656 endchoice
813 657
814 source "kernel/power/Kconfig" !! 658 config HZ
>> 659 int
>> 660 default 32 if HZ_32
>> 661 default 64 if HZ_64
>> 662 default 128 if HZ_128
>> 663 default 256 if HZ_256
>> 664 default 1200 if HZ_1200
>> 665 default 1024
>> 666
>> 667 config SRM_ENV
>> 668 tristate "SRM environment through procfs"
>> 669 depends on PROC_FS
>> 670 ---help---
>> 671 If you enable this option, a subdirectory inside /proc called
>> 672 /proc/srm_environment will give you access to the all important
>> 673 SRM environment variables (those which have a name) and also
>> 674 to all others (by their internal number).
>> 675
>> 676 SRM is something like a BIOS for Alpha machines. There are some
>> 677 other such BIOSes, like AlphaBIOS, which this driver cannot
>> 678 support (hey, that's not SRM!).
>> 679
>> 680 Despite the fact that this driver doesn't work on all Alphas (but
>> 681 only on those which have SRM as their firmware), it's save to
>> 682 build it even if your particular machine doesn't know about SRM
>> 683 (or if you intend to compile a generic kernel). It will simply
>> 684 not create those subdirectory in /proc (and give you some warning,
>> 685 of course).
>> 686
>> 687 This driver is also available as a module and will be called
>> 688 srm_env then.
815 689
816 endmenu 690 endmenu
>> 691
>> 692 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
>> 693 # but we also need it if VGA_HOSE is set
>> 694 config DUMMY_CONSOLE
>> 695 bool
>> 696 depends on VGA_HOSE
>> 697 default y
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