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