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_32BIT_USTAT_F_TINODE
6 select ARCH_HAS_BINFMT_FLAT if !MMU <<
7 select ARCH_HAS_CURRENT_STACK_POINTER 6 select ARCH_HAS_CURRENT_STACK_POINTER
8 select ARCH_HAS_DEBUG_VM_PGTABLE !! 7 select ARCH_MIGHT_HAVE_PC_PARPORT
9 select ARCH_HAS_DMA_PREP_COHERENT if M !! 8 select ARCH_MIGHT_HAVE_PC_SERIO
10 select ARCH_HAS_GCOV_PROFILE_ALL !! 9 select ARCH_NO_PREEMPT
11 select ARCH_HAS_KCOV !! 10 select ARCH_NO_SG_CHAIN
12 select ARCH_HAS_SYNC_DMA_FOR_CPU if MM !! 11 select ARCH_USE_CMPXCHG_LOCKREF
13 select ARCH_HAS_SYNC_DMA_FOR_DEVICE if !! 12 select DMA_OPS if PCI
14 select ARCH_HAS_DMA_SET_UNCACHED if MM !! 13 select FORCE_PCI if !ALPHA_JENSEN
15 select ARCH_HAS_STRNCPY_FROM_USER if ! !! 14 select PCI_DOMAINS if PCI
16 select ARCH_HAS_STRNLEN_USER !! 15 select PCI_SYSCALL if PCI
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 16 select HAVE_ASM_MODVERSIONS
41 select HAVE_CONTEXT_TRACKING_USER !! 17 select HAVE_PCSPKR_PLATFORM
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 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 GENERIC_IRQ_PROBE
55 select IRQ_DOMAIN !! 22 select GENERIC_PCI_IOMAP
>> 23 select AUTO_IRQ_AFFINITY if SMP
>> 24 select GENERIC_IRQ_SHOW
>> 25 select ARCH_WANT_IPC_PARSE_VERSION
>> 26 select ARCH_HAVE_NMI_SAFE_CMPXCHG
>> 27 select AUDIT_ARCH
>> 28 select GENERIC_CPU_VULNERABILITIES
>> 29 select GENERIC_SMP_IDLE_THREAD
>> 30 select HAS_IOPORT
>> 31 select HAVE_ARCH_AUDITSYSCALL
>> 32 select HAVE_MOD_ARCH_SPECIFIC
56 select LOCK_MM_AND_FIND_VMA 33 select LOCK_MM_AND_FIND_VMA
57 select MODULES_USE_ELF_RELA 34 select MODULES_USE_ELF_RELA
58 select PERF_USE_VMALLOC !! 35 select ODD_RT_SIGACTION
59 select TRACE_IRQFLAGS_SUPPORT !! 36 select OLD_SIGSUSPEND
60 help !! 37 select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67
61 Xtensa processors are 32-bit RISC ma !! 38 select MMU_GATHER_NO_RANGE
62 primarily for embedded systems. The !! 39 select SPARSEMEM_EXTREME if SPARSEMEM
63 configurable and extensible. The Li !! 40 select ZONE_DMA
64 architecture supports all processor !! 41 help
65 with reasonable minimum requirements !! 42 The Alpha is a 64-bit general-purpose processor designed and
66 a home page at <http://www.linux-xte !! 43 marketed by the Digital Equipment Corporation of blessed memory,
>> 44 now Hewlett-Packard. The Alpha Linux project has a home page at
>> 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
79 65
80 config NO_IOPORT_MAP !! 66 config GENERIC_ISA_DMA
81 def_bool n !! 67 bool
>> 68 default y
82 69
83 config HZ !! 70 config PGTABLE_LEVELS
84 int 71 int
85 default 100 !! 72 default 3
86 73
87 config LOCKDEP_SUPPORT !! 74 config AUDIT_ARCH
88 def_bool y !! 75 bool
89 76
90 config STACKTRACE_SUPPORT !! 77 menu "System setup"
91 def_bool y <<
92 78
93 config MMU !! 79 choice
94 def_bool n !! 80 prompt "Alpha system type"
95 select PFAULT !! 81 default ALPHA_GENERIC
>> 82 help
>> 83 This is the system type of your hardware. A "generic" kernel will
>> 84 run on any supported Alpha system. However, if you configure a
>> 85 kernel for your specific system, it will be faster and smaller.
96 86
97 config HAVE_XTENSA_GPIO32 !! 87 To find out what type of Alpha system you have, you may want to
98 def_bool n !! 88 check out the Linux/Alpha FAQ, accessible on the WWW from
>> 89 <http://www.alphalinux.org/>. In summary:
99 90
100 config KASAN_SHADOW_OFFSET !! 91 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
101 hex !! 92 Alpha-XL XL-233, XL-266
102 default 0x6e400000 !! 93 AlphaBook1 Alpha laptop
>> 94 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
>> 95 Cabriolet AlphaPC64, AlphaPCI64
>> 96 DP264 DP264 / DS20 / ES40 / DS10 / DS10L
>> 97 EB164 EB164 21164 evaluation board
>> 98 EB64+ EB64+ 21064 evaluation board
>> 99 EB66 EB66 21066 evaluation board
>> 100 EB66+ EB66+ 21066 evaluation board
>> 101 Jensen DECpc 150, DEC 2000 models 300, 500
>> 102 LX164 AlphaPC164-LX
>> 103 Lynx AS 2100A
>> 104 Miata Personal Workstation 433/500/600 a/au
>> 105 Marvel AlphaServer ES47 / ES80 / GS1280
>> 106 Mikasa AS 1000
>> 107 Noname AXPpci33, UDB (Multia)
>> 108 Noritake AS 1000A, AS 600A, AS 800
>> 109 PC164 AlphaPC164
>> 110 Rawhide AS 1200, AS 4000, AS 4100
>> 111 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
>> 112 SX164 AlphaPC164-SX
>> 113 Sable AS 2000, AS 2100
>> 114 Shark DS 20L
>> 115 Takara Takara (OEM)
>> 116 Titan AlphaServer ES45 / DS25 / DS15
>> 117 Wildfire AlphaServer GS 40/80/160/320
103 118
104 config CPU_BIG_ENDIAN !! 119 If you don't know what to do, choose "generic".
105 def_bool $(success,test "$(shell,echo <<
106 120
107 config CPU_LITTLE_ENDIAN !! 121 config ALPHA_GENERIC
108 def_bool !CPU_BIG_ENDIAN !! 122 bool "Generic"
>> 123 depends on TTY
>> 124 select HAVE_EISA
>> 125 help
>> 126 A generic kernel will run on all supported Alpha hardware.
109 127
110 config CC_HAVE_CALL0_ABI !! 128 config ALPHA_ALCOR
111 def_bool $(success,test "$(shell,echo !! 129 bool "Alcor/Alpha-XLT"
>> 130 select HAVE_EISA
>> 131 help
>> 132 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
>> 133 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
>> 134 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
>> 135 controller (256-bit memory bus) and a PCI interface. It also does
>> 136 all the work required to support an external Bcache and to maintain
>> 137 memory coherence when a PCI device DMAs into (or out of) memory.
112 138
113 menu "Processor type and features" !! 139 config ALPHA_XL
>> 140 bool "Alpha-XL"
>> 141 help
>> 142 XL-233 and XL-266-based Alpha systems.
114 143
115 choice !! 144 config ALPHA_BOOK1
116 prompt "Xtensa Processor Configuration !! 145 bool "AlphaBook1"
117 default XTENSA_VARIANT_FSF !! 146 help
>> 147 Dec AlphaBook1/Burns Alpha-based laptops.
118 148
119 config XTENSA_VARIANT_FSF !! 149 config ALPHA_AVANTI_CH
120 bool "fsf - default (not generic) conf !! 150 bool "Avanti"
121 select MMU <<
122 151
123 config XTENSA_VARIANT_DC232B !! 152 config ALPHA_CABRIOLET
124 bool "dc232b - Diamond 232L Standard C !! 153 bool "Cabriolet"
125 select MMU <<
126 select HAVE_XTENSA_GPIO32 <<
127 help 154 help
128 This variant refers to Tensilica's D !! 155 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
>> 156 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
>> 157 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
>> 158 Bcache SIMMs. Requires power supply with 3.3V output.
129 159
130 config XTENSA_VARIANT_DC233C !! 160 config ALPHA_DP264
131 bool "dc233c - Diamond 233L Standard C !! 161 bool "DP264"
132 select MMU <<
133 select HAVE_XTENSA_GPIO32 <<
134 help 162 help
135 This variant refers to Tensilica's D !! 163 Various 21264 systems with the tsunami core logic chipset.
>> 164 API Networks: 264DP, UP2000(+), CS20;
>> 165 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
136 166
137 config XTENSA_VARIANT_CUSTOM !! 167 config ALPHA_EB164
138 bool "Custom Xtensa processor configur !! 168 bool "EB164"
139 select HAVE_XTENSA_GPIO32 <<
140 help 169 help
141 Select this variant to use a custom !! 170 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
142 You will be prompted for a processor !! 171 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
143 endchoice !! 172 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
>> 173 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
>> 174 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
>> 175 motherboard. Requires power supply with 3.3V output.
144 176
145 config XTENSA_VARIANT_CUSTOM_NAME !! 177 config ALPHA_EB64P_CH
146 string "Xtensa Processor Custom Core V !! 178 bool "EB64+"
147 depends on XTENSA_VARIANT_CUSTOM !! 179
148 help !! 180 config ALPHA_EB66
149 Provide the name of a custom Xtensa !! 181 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 182 help
174 Enable if core variant has Performan !! 183 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
175 External Registers Interface. !! 184 identical to EB64+. Baby PC-AT size. Runs from standard PC power
>> 185 supply. The EB66 schematic was published as a marketing poster
>> 186 advertising the 21066 as "the first microprocessor in the world with
>> 187 embedded PCI".
176 188
177 If unsure, say N. !! 189 config ALPHA_EB66P
>> 190 bool "EB66+"
>> 191 help
>> 192 Later variant of the EB66 board.
178 193
179 config XTENSA_FAKE_NMI !! 194 config ALPHA_EIGER
180 bool "Treat PMM IRQ as NMI" !! 195 bool "Eiger"
181 depends on XTENSA_VARIANT_HAVE_PERF_EV <<
182 default n <<
183 help 196 help
184 If PMM IRQ is the only IRQ at EXCM l !! 197 Apparently an obscure OEM single-board computer based on the
185 treat it as NMI, which improves accu !! 198 Typhoon/Tsunami chipset family. Information on it is scanty.
186 199
187 If there are other interrupts at or !! 200 config ALPHA_JENSEN
188 but not above the EXCM level, PMM IR !! 201 bool "Jensen"
189 but only if these IRQs are not used. !! 202 select HAVE_EISA
190 saying that this is not safe, and a !! 203 help
191 actually fire. !! 204 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
>> 205 of the first-generation Alpha systems. A number of these systems
>> 206 seem to be available on the second- hand market. The Jensen is a
>> 207 floor-standing tower system which originally used a 150MHz 21064 It
>> 208 used programmable logic to interface a 486 EISA I/O bridge to the
>> 209 CPU.
192 210
193 If unsure, say N. !! 211 config ALPHA_LX164
>> 212 bool "LX164"
>> 213 help
>> 214 A technical overview of this board is available at
>> 215 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
194 216
195 config PFAULT !! 217 config ALPHA_LYNX
196 bool "Handle protection faults" if EXP !! 218 bool "Lynx"
197 default y !! 219 select HAVE_EISA
198 help 220 help
199 Handle protection faults. MMU config !! 221 AlphaServer 2100A-based systems.
200 noMMU configurations may disable it <<
201 generates protection faults or fault <<
202 222
203 If unsure, say Y. !! 223 config ALPHA_MARVEL
>> 224 bool "Marvel"
>> 225 help
>> 226 AlphaServer ES47 / ES80 / GS1280 based on EV7.
204 227
205 config XTENSA_UNALIGNED_USER !! 228 config ALPHA_MIATA
206 bool "Unaligned memory access in user !! 229 bool "Miata"
>> 230 select HAVE_EISA
207 help 231 help
208 The Xtensa architecture currently do !! 232 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
209 memory accesses in hardware but thro !! 233 or 600au).
210 Per default, unaligned memory access <<
211 234
212 Say Y here to enable unaligned memor !! 235 config ALPHA_MIKASA
>> 236 bool "Mikasa"
>> 237 help
>> 238 AlphaServer 1000-based Alpha systems.
213 239
214 config XTENSA_LOAD_STORE !! 240 config ALPHA_NAUTILUS
215 bool "Load/store exception handler for !! 241 bool "Nautilus"
216 help 242 help
217 The Xtensa architecture only allows !! 243 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 <<
222 244
223 Say Y here to enable exception handl !! 245 config ALPHA_NONAME_CH
224 byte and 2-byte access to memory att !! 246 bool "Noname"
225 247
226 config HAVE_SMP !! 248 config ALPHA_NORITAKE
227 bool "System Supports SMP (MX)" !! 249 bool "Noritake"
228 depends on XTENSA_VARIANT_CUSTOM !! 250 select HAVE_EISA
229 select XTENSA_MX <<
230 help 251 help
231 This option is used to indicate that !! 252 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
232 supports Multiprocessing. Multiproce !! 253 systems.
233 the CPU core definition and currentl <<
234 <<
235 Multiprocessor support is implemente <<
236 interrupt controllers. <<
237 254
238 The MX interrupt distributer adds In !! 255 config ALPHA_PC164
239 and causes the IRQ numbers to be inc !! 256 bool "PC164"
240 like the open cores ethernet driver <<
241 257
242 You still have to select "Enable SMP !! 258 config ALPHA_P2K
>> 259 bool "Platform2000"
243 260
244 config SMP !! 261 config ALPHA_RAWHIDE
245 bool "Enable Symmetric multi-processin !! 262 bool "Rawhide"
246 depends on HAVE_SMP !! 263 select HAVE_EISA
247 select GENERIC_SMP_IDLE_THREAD <<
248 help 264 help
249 Enabled SMP Software; allows more th !! 265 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
250 to be activated during startup. !! 266 See HOWTO at
251 !! 267 <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" <<
257 268
258 config HOTPLUG_CPU !! 269 config ALPHA_RUFFIAN
259 bool "Enable CPU hotplug support" !! 270 bool "Ruffian"
260 depends on SMP <<
261 help 271 help
262 Say Y here to allow turning CPUs off !! 272 Samsung APC164UX. There is a page on known problems and workarounds
263 controlled through /sys/devices/syst !! 273 at <http://www.alphalinux.org/faq/FAQ-11.html>.
264 274
265 Say N if you want to disable CPU hot !! 275 config ALPHA_RX164
>> 276 bool "RX164"
266 277
267 config SECONDARY_RESET_VECTOR !! 278 config ALPHA_SX164
268 bool "Secondary cores use alternative !! 279 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 <<
275 280
276 config FAST_SYSCALL_XTENSA !! 281 config ALPHA_SABLE
277 bool "Enable fast atomic syscalls" !! 282 bool "Sable"
278 default n !! 283 select HAVE_EISA
279 help 284 help
280 fast_syscall_xtensa is a syscall tha !! 285 Digital AlphaServer 2000 and 2100-based systems.
281 on UP kernel when processor has no s <<
282 286
283 This syscall is deprecated. It may h !! 287 config ALPHA_SHARK
284 invalid arguments. It is provided on !! 288 bool "Shark"
285 Only enable it if your userspace sof <<
286 <<
287 If unsure, say N. <<
288 289
289 config FAST_SYSCALL_SPILL_REGISTERS !! 290 config ALPHA_TAKARA
290 bool "Enable spill registers syscall" !! 291 bool "Takara"
291 default n <<
292 help 292 help
293 fast_syscall_spill_registers is a sy !! 293 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 <<
299 294
300 If unsure, say N. !! 295 config ALPHA_TITAN
>> 296 bool "Titan"
>> 297 help
>> 298 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
301 299
302 choice !! 300 config ALPHA_WILDFIRE
303 prompt "Kernel ABI" !! 301 bool "Wildfire"
304 default KERNEL_ABI_DEFAULT <<
305 help 302 help
306 Select ABI for the kernel code. This !! 303 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. <<
331 304
332 endchoice 305 endchoice
333 306
334 config USER_ABI_CALL0 !! 307 # clear all implied options (don't want default values for those):
>> 308 # Most of these machines have ISA slots; not exactly sure which don't,
>> 309 # and this doesn't activate hordes of code, so do it always.
>> 310 config ISA
335 bool 311 bool
336 !! 312 default y
337 choice <<
338 prompt "Userspace ABI" <<
339 default USER_ABI_DEFAULT <<
340 help 313 help
341 Select supported userspace ABI. !! 314 Find out whether you have ISA slots on your motherboard. ISA is the
>> 315 name of a bus system, i.e. the way the CPU talks to the other stuff
>> 316 inside your box. Other bus systems are PCI, EISA, MicroChannel
>> 317 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
>> 318 newer boards don't support it. If you have ISA, say Y, otherwise N.
342 319
343 If unsure, choose the default ABI. !! 320 config ISA_DMA_API
>> 321 bool
>> 322 default y
344 323
345 config USER_ABI_DEFAULT !! 324 config ALPHA_NONAME
346 bool "Default ABI only" !! 325 bool
>> 326 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
>> 327 default y
347 help 328 help
348 Assume default userspace ABI. For XE !! 329 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
349 call0 ABI binaries may be run on suc !! 330 UDB). This design was produced by Digital's Technical OEM (TOEM)
350 will not work correctly for them. !! 331 group. It uses the 21066 processor running at 166MHz or 233MHz. It
>> 332 is a baby-AT size, and runs from a standard PC power supply. It has
>> 333 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
>> 334 2 versions, with either PS/2 or large DIN connectors for the
>> 335 keyboard.
351 336
352 config USER_ABI_CALL0_ONLY !! 337 config ALPHA_EV4
353 bool "Call0 ABI only" !! 338 bool
354 select USER_ABI_CALL0 !! 339 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
355 help !! 340 default y if !ALPHA_LYNX
356 Select this option to support only c <<
357 Windowed ABI binaries will crash wit <<
358 an illegal instruction exception on <<
359 341
360 Choose this option if you're plannin !! 342 config ALPHA_LCA
361 built with call0 ABI. !! 343 bool
>> 344 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
>> 345 default y
362 346
363 config USER_ABI_CALL0_PROBE !! 347 config ALPHA_APECS
364 bool "Support both windowed and call0 !! 348 bool
365 select USER_ABI_CALL0 !! 349 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
>> 350 default y
>> 351
>> 352 config ALPHA_EB64P
>> 353 bool
>> 354 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
>> 355 default y
366 help 356 help
367 Select this option to support both w !! 357 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
368 ABIs. When enabled all processes are !! 358 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
369 and a fast user exception handler fo !! 359 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
370 used to turn on PS.WOE bit on the fi !! 360 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
371 the userspace. !! 361 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
>> 362 Runs from standard PC power supply.
>> 363
>> 364 config ALPHA_EV5
>> 365 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
>> 366 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
372 367
373 This option should be enabled for th !! 368 config ALPHA_EV4
374 both call0 and windowed ABIs in user !! 369 bool
>> 370 default y if ALPHA_LYNX && !ALPHA_EV5
375 371
376 Note that Xtensa ISA does not guaran !! 372 config ALPHA_CIA
377 raise an illegal instruction excepti !! 373 bool
378 PS.WOE is disabled, check whether th !! 374 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
>> 375 default y
379 376
380 endchoice !! 377 config ALPHA_EV56
>> 378 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
>> 379 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
381 380
382 endmenu !! 381 config ALPHA_EV56
>> 382 prompt "EV56 CPU (speed >= 333MHz)?"
>> 383 depends on ALPHA_NORITAKE || ALPHA_PRIMO
>> 384
>> 385 config ALPHA_EV56
>> 386 prompt "EV56 CPU (speed >= 400MHz)?"
>> 387 depends on ALPHA_RAWHIDE
383 388
384 config XTENSA_CALIBRATE_CCOUNT !! 389 config ALPHA_PRIMO
385 def_bool n !! 390 bool "EV5 CPU daughtercard (model 5/xxx)?"
>> 391 depends on ALPHA_NORITAKE || ALPHA_MIKASA
386 help 392 help
387 On some platforms (XT2000, for examp !! 393 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
388 vary. The frequency can be determin <<
389 against a well known, fixed frequenc <<
390 394
391 config SERIAL_CONSOLE !! 395 config ALPHA_GAMMA
392 def_bool n !! 396 bool "EV5 CPU(s) (model 5/xxx)?"
>> 397 depends on ALPHA_SABLE
>> 398 help
>> 399 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
393 400
394 config PLATFORM_HAVE_XIP !! 401 config ALPHA_GAMMA
395 def_bool n !! 402 bool
>> 403 depends on ALPHA_LYNX
>> 404 default y
396 405
397 menu "Platform options" !! 406 config ALPHA_T2
>> 407 bool
>> 408 depends on ALPHA_SABLE || ALPHA_LYNX
>> 409 default y
398 410
399 choice !! 411 config ALPHA_PYXIS
400 prompt "Xtensa System Type" !! 412 bool
401 default XTENSA_PLATFORM_ISS !! 413 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
>> 414 default y
402 415
403 config XTENSA_PLATFORM_ISS !! 416 config ALPHA_EV6
404 bool "ISS" !! 417 bool
405 select XTENSA_CALIBRATE_CCOUNT !! 418 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
406 select SERIAL_CONSOLE !! 419 default y
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 <<
424 XTFPGA is the name of Tensilica boar <<
425 This hardware is capable of running <<
426 420
427 endchoice !! 421 config ALPHA_TSUNAMI
>> 422 bool
>> 423 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
>> 424 default y
428 425
429 config PLATFORM_NR_IRQS !! 426 config ALPHA_EV67
430 int !! 427 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
431 default 3 if XTENSA_PLATFORM_XT2000 !! 428 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
432 default 0 !! 429 help
>> 430 Is this a machine based on the EV67 core? If in doubt, select N here
>> 431 and the machine will be treated as an EV6.
433 432
434 config XTENSA_CPU_CLOCK !! 433 config ALPHA_MCPCIA
435 int "CPU clock rate [MHz]" !! 434 bool
436 depends on !XTENSA_CALIBRATE_CCOUNT !! 435 depends on ALPHA_RAWHIDE
437 default 16 !! 436 default y
438 437
439 config GENERIC_CALIBRATE_DELAY !! 438 config ALPHA_POLARIS
440 bool "Auto calibration of the BogoMIPS !! 439 bool
441 help !! 440 depends on ALPHA_RX164
442 The BogoMIPS value can easily be der !! 441 default y
443 442
444 config CMDLINE_BOOL !! 443 config ALPHA_IRONGATE
445 bool "Default bootloader kernel argume !! 444 bool
>> 445 depends on ALPHA_NAUTILUS
>> 446 default y
446 447
447 config CMDLINE !! 448 config GENERIC_HWEIGHT
448 string "Initial kernel command string" !! 449 bool
449 depends on CMDLINE_BOOL !! 450 default y if !ALPHA_EV67
450 default "console=ttyS0,38400 root=/dev <<
451 help <<
452 On some architectures (EBSA110 and C <<
453 for the boot loader to pass argument <<
454 architectures, you should supply som <<
455 time by entering them here. As a min <<
456 memory size and the root device (e.g <<
457 451
458 config USE_OF !! 452 config ALPHA_AVANTI
459 bool "Flattened Device Tree support" !! 453 bool
460 select OF !! 454 depends on ALPHA_XL || ALPHA_AVANTI_CH
461 select OF_EARLY_FLATTREE !! 455 default y
462 help 456 help
463 Include support for flattened device !! 457 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
>> 458 Alphas. Info at
>> 459 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
464 460
465 config BUILTIN_DTB_SOURCE !! 461 config ALPHA_BROKEN_IRQ_MASK
466 string "DTB to build into the kernel i !! 462 bool
467 depends on OF !! 463 depends on ALPHA_GENERIC || ALPHA_PC164
>> 464 default y
468 465
469 config PARSE_BOOTPARAM !! 466 config VGA_HOSE
470 bool "Parse bootparam block" !! 467 bool
>> 468 depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI)
471 default y 469 default y
472 help 470 help
473 Parse parameters passed to the kerne !! 471 Support VGA on an arbitrary hose; needed for several platforms
474 be disabled if the kernel is known t !! 472 which always have multiple hoses, and whose consoles support it.
475 473
476 If unsure, say Y. <<
477 474
478 choice !! 475 config ALPHA_QEMU
479 prompt "Semihosting interface" !! 476 bool "Run under QEMU emulation"
480 default XTENSA_SIMCALL_ISS !! 477 depends on !ALPHA_GENERIC
481 depends on XTENSA_PLATFORM_ISS <<
482 help 478 help
483 Choose semihosting interface that wi !! 479 Assume the presence of special features supported by QEMU PALcode
484 block device and networking. !! 480 that reduce the overhead of system emulation.
485 481
486 config XTENSA_SIMCALL_ISS !! 482 Generic kernels will auto-detect QEMU. But when building a
487 bool "simcall" !! 483 system-specific kernel, the assumption is that we want to
488 help !! 484 eliminate as many runtime tests as possible.
489 Use simcall instruction. simcall is <<
490 it does nothing on hardware. <<
491 485
492 config XTENSA_SIMCALL_GDBIO !! 486 If unsure, say N.
493 bool "GDBIO" <<
494 help <<
495 Use break instruction. It is availab <<
496 is attached to it via JTAG. <<
497 487
498 endchoice <<
499 488
500 config BLK_DEV_SIMDISK !! 489 config ALPHA_SRM
501 tristate "Host file-based simulated bl !! 490 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
502 default n !! 491 depends on TTY
503 depends on XTENSA_PLATFORM_ISS && BLOC !! 492 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
504 help !! 493 help
505 Create block devices that map to fil !! 494 There are two different types of booting firmware on Alphas: SRM,
506 Device binding to host file may be c !! 495 which is command line driven, and ARC, which uses menus and arrow
507 interface provided the device is not !! 496 keys. Details about the Linux/Alpha booting process are contained in
508 !! 497 the Linux/Alpha FAQ, accessible on the WWW from
509 config BLK_DEV_SIMDISK_COUNT !! 498 <http://www.alphalinux.org/>.
510 int "Number of host file-based simulat !! 499
511 range 1 10 !! 500 The usual way to load Linux on an Alpha machine is to use MILO
512 depends on BLK_DEV_SIMDISK !! 501 (a bootloader that lets you pass command line parameters to the
513 default 2 !! 502 kernel just like lilo does for the x86 architecture) which can be
514 help !! 503 loaded either from ARC or can be installed directly as a permanent
515 This is the default minimal number o !! 504 firmware replacement from floppy (which requires changing a certain
516 Kernel/module parameter 'simdisk_cou !! 505 jumper on the motherboard). If you want to do either of these, say N
517 value at runtime. More file names (b !! 506 here. If MILO doesn't work on your system (true for Jensen
518 specified as parameters, simdisk_cou !! 507 motherboards), you can bypass it altogether and boot Linux directly
519 !! 508 from an SRM console; say Y here in order to do that. Note that you
520 config SIMDISK0_FILENAME !! 509 won't be able to boot from an IDE disk using SRM.
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. <<
544 510
545 If unsure, say N. 511 If unsure, say N.
546 512
547 config XTFPGA_LCD_BASE_ADDR !! 513 config ARCH_MAY_HAVE_PC_FDC
548 hex "XTFPGA LCD base address" !! 514 def_bool y
549 depends on XTFPGA_LCD <<
550 default "0x0d0c0000" <<
551 help <<
552 Base address of the LCD controller i <<
553 Different boards from XTFPGA family <<
554 addresses. Please consult prototypin <<
555 the correct address. Wrong address h <<
556 <<
557 config XTFPGA_LCD_8BIT_ACCESS <<
558 bool "Use 8-bit access to XTFPGA LCD" <<
559 depends on XTFPGA_LCD <<
560 default n <<
561 help <<
562 LCD may be connected with 4- or 8-bi <<
563 only be used with 8-bit interface. P <<
564 guide for your board for the correct <<
565 <<
566 comment "Kernel memory layout" <<
567 <<
568 config INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX <<
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 config SMP
>> 517 bool "Symmetric multi-processing support"
>> 518 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
>> 519 help
>> 520 This enables support for systems with more than one CPU. If you have
>> 521 a system with only one CPU, say N. If you have a system with more
>> 522 than one CPU, say Y.
>> 523
>> 524 If you say N here, the kernel will run on uni- and multiprocessor
>> 525 machines, but will use only one CPU of a multiprocessor machine. If
>> 526 you say Y here, the kernel will run on many, but not all,
>> 527 uniprocessor machines. On a uniprocessor machine, the kernel
>> 528 will run faster if you say N here.
618 529
619 config MEMMAP_CACHEATTR !! 530 See also the SMP-HOWTO available at
620 hex "Cache attributes for the memory a !! 531 <https://www.tldp.org/docs.html#howto>.
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. <<
682 532
683 If unsure, leave the default value h !! 533 If you don't know what to do here, say N.
684 534
685 choice !! 535 config NR_CPUS
686 prompt "Relocatable vectors location" !! 536 int "Maximum number of CPUs (2-32)"
687 default XTENSA_VECTORS_IN_TEXT !! 537 range 2 32
>> 538 depends on SMP
>> 539 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
>> 540 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
688 help 541 help
689 Choose whether relocatable vectors a !! 542 MARVEL support can handle a maximum of 32 CPUs, all the others
690 or placed separately at runtime. Thi !! 543 with working support have a maximum of 4 CPUs.
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 <<
711 endchoice <<
712 544
713 config VECTORS_ADDR !! 545 config ARCH_SPARSEMEM_ENABLE
714 hex "Kernel vectors virtual address" !! 546 bool "Sparse Memory Support"
715 default 0x00000000 <<
716 depends on XTENSA_VECTORS_SEPARATE <<
717 help <<
718 This is the virtual address of the ( <<
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 547 help
738 This is the base address used for bo !! 548 Say Y to support efficient handling of discontiguous physical memory,
739 in noMMU configurations. !! 549 for systems that have huge holes in the physical address space.
>> 550
>> 551 config ALPHA_WTINT
>> 552 bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC
>> 553 default y if ALPHA_QEMU
>> 554 default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA)
>> 555 default n if !ALPHA_SRM && !ALPHA_GENERIC
>> 556 default y if SMP
>> 557 help
>> 558 The Wait for Interrupt (WTINT) PALcall attempts to place the CPU
>> 559 to sleep until the next interrupt. This may reduce the power
>> 560 consumed, and the heat produced by the computer. However, it has
>> 561 the side effect of making the cycle counter unreliable as a timing
>> 562 device across the sleep.
740 563
741 If unsure, leave the default value h !! 564 For emulation under QEMU, definitely say Y here, as we have other
>> 565 mechanisms for measuring time than the cycle counter.
742 566
743 choice !! 567 For EV4 (but not LCA), EV5 and EV56 systems, or for systems running
744 prompt "KSEG layout" !! 568 MILO, sleep mode is not supported so you might as well say N here.
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. <<
771 569
772 endchoice !! 570 For SMP systems we cannot use the cycle counter for timing anyway,
>> 571 so you might as well say Y here.
773 572
774 config HIGHMEM !! 573 If unsure, say N.
775 bool "High Memory Support" <<
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 <<
804 574
805 Don't change if unsure. !! 575 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
>> 576 config ALPHA_LARGE_VMALLOC
>> 577 bool
>> 578 help
>> 579 Process creation and other aspects of virtual memory management can
>> 580 be streamlined if we restrict the kernel to one PGD for all vmalloc
>> 581 allocations. This equates to about 8GB.
>> 582
>> 583 Under normal circumstances, this is so far and above what is needed
>> 584 as to be laughable. However, there are certain applications (such
>> 585 as benchmark-grade in-kernel web serving) that can make use of as
>> 586 much vmalloc space as is available.
>> 587
>> 588 Say N unless you know you need gobs and gobs of vmalloc space.
>> 589
>> 590 config VERBOSE_MCHECK
>> 591 bool "Verbose Machine Checks"
>> 592
>> 593 config VERBOSE_MCHECK_ON
>> 594 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
>> 595 depends on VERBOSE_MCHECK
>> 596 default 1
>> 597 help
>> 598 This option allows the default printing mode to be set, and then
>> 599 possibly overridden by a boot command argument.
>> 600
>> 601 For example, if one wanted the option of printing verbose
>> 602 machine checks, but wanted the default to be as if verbose
>> 603 machine check printing was turned off, then one would choose
>> 604 the printing mode to be 0. Then, upon reboot, one could add
>> 605 the boot command line "verbose_mcheck=1" to get the normal
>> 606 verbose machine check printing, or "verbose_mcheck=2" to get
>> 607 the maximum information available.
806 608
807 endmenu !! 609 Take the default (1) unless you want more control or more info.
808 610
809 menu "Power management options" !! 611 choice
>> 612 prompt "Timer interrupt frequency (HZ)?"
>> 613 default HZ_128 if ALPHA_QEMU
>> 614 default HZ_1200 if ALPHA_RAWHIDE
>> 615 default HZ_1024
>> 616 help
>> 617 The frequency at which timer interrupts occur. A high frequency
>> 618 minimizes latency, whereas a low frequency minimizes overhead of
>> 619 process accounting. The later effect is especially significant
>> 620 when being run under QEMU.
>> 621
>> 622 Note that some Alpha hardware cannot change the interrupt frequency
>> 623 of the timer. If unsure, say 1024 (or 1200 for Rawhide).
>> 624
>> 625 config HZ_32
>> 626 bool "32 Hz"
>> 627 config HZ_64
>> 628 bool "64 Hz"
>> 629 config HZ_128
>> 630 bool "128 Hz"
>> 631 config HZ_256
>> 632 bool "256 Hz"
>> 633 config HZ_1024
>> 634 bool "1024 Hz"
>> 635 config HZ_1200
>> 636 bool "1200 Hz"
>> 637 endchoice
810 638
811 config ARCH_HIBERNATION_POSSIBLE !! 639 config HZ
812 def_bool y !! 640 int
>> 641 default 32 if HZ_32
>> 642 default 64 if HZ_64
>> 643 default 128 if HZ_128
>> 644 default 256 if HZ_256
>> 645 default 1200 if HZ_1200
>> 646 default 1024
>> 647
>> 648 config SRM_ENV
>> 649 tristate "SRM environment through procfs"
>> 650 depends on PROC_FS
>> 651 help
>> 652 If you enable this option, a subdirectory inside /proc called
>> 653 /proc/srm_environment will give you access to the all important
>> 654 SRM environment variables (those which have a name) and also
>> 655 to all others (by their internal number).
>> 656
>> 657 SRM is something like a BIOS for Alpha machines. There are some
>> 658 other such BIOSes, like AlphaBIOS, which this driver cannot
>> 659 support (hey, that's not SRM!).
>> 660
>> 661 Despite the fact that this driver doesn't work on all Alphas (but
>> 662 only on those which have SRM as their firmware), it's save to
>> 663 build it even if your particular machine doesn't know about SRM
>> 664 (or if you intend to compile a generic kernel). It will simply
>> 665 not create those subdirectory in /proc (and give you some warning,
>> 666 of course).
813 667
814 source "kernel/power/Kconfig" !! 668 This driver is also available as a module and will be called
>> 669 srm_env then.
815 670
816 endmenu 671 endmenu
>> 672
>> 673 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
>> 674 # but we also need it if VGA_HOSE is set
>> 675 config DUMMY_CONSOLE
>> 676 bool
>> 677 depends on VGA_HOSE
>> 678 default y
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