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 HAVE_ARCH_AUDITSYSCALL
>> 31 select HAVE_MOD_ARCH_SPECIFIC
56 select LOCK_MM_AND_FIND_VMA 32 select LOCK_MM_AND_FIND_VMA
57 select MODULES_USE_ELF_RELA 33 select MODULES_USE_ELF_RELA
58 select PERF_USE_VMALLOC !! 34 select ODD_RT_SIGACTION
59 select TRACE_IRQFLAGS_SUPPORT !! 35 select OLD_SIGSUSPEND
60 help !! 36 select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67
61 Xtensa processors are 32-bit RISC ma !! 37 select MMU_GATHER_NO_RANGE
62 primarily for embedded systems. The !! 38 select SPARSEMEM_EXTREME if SPARSEMEM
63 configurable and extensible. The Li !! 39 select ZONE_DMA
64 architecture supports all processor !! 40 help
65 with reasonable minimum requirements !! 41 The Alpha is a 64-bit general-purpose processor designed and
66 a home page at <http://www.linux-xte !! 42 marketed by the Digital Equipment Corporation of blessed memory,
>> 43 now Hewlett-Packard. The Alpha Linux project has a home page at
>> 44 <http://www.alphalinux.org/>.
67 45
68 config GENERIC_HWEIGHT !! 46 config 64BIT
69 def_bool y 47 def_bool y
70 48
>> 49 config MMU
>> 50 bool
>> 51 default y
>> 52
71 config ARCH_HAS_ILOG2_U32 53 config ARCH_HAS_ILOG2_U32
72 def_bool n !! 54 bool
>> 55 default n
73 56
74 config ARCH_HAS_ILOG2_U64 57 config ARCH_HAS_ILOG2_U64
75 def_bool n !! 58 bool
>> 59 default n
76 60
77 config ARCH_MTD_XIP !! 61 config GENERIC_CALIBRATE_DELAY
78 def_bool y !! 62 bool
>> 63 default y
79 64
80 config NO_IOPORT_MAP !! 65 config GENERIC_ISA_DMA
81 def_bool n !! 66 bool
>> 67 default y
82 68
83 config HZ !! 69 config PGTABLE_LEVELS
84 int 70 int
85 default 100 !! 71 default 3
86 72
87 config LOCKDEP_SUPPORT !! 73 config AUDIT_ARCH
88 def_bool y !! 74 bool
89 75
90 config STACKTRACE_SUPPORT !! 76 menu "System setup"
91 def_bool y <<
92 77
93 config MMU !! 78 choice
94 def_bool n !! 79 prompt "Alpha system type"
95 select PFAULT !! 80 default ALPHA_GENERIC
>> 81 help
>> 82 This is the system type of your hardware. A "generic" kernel will
>> 83 run on any supported Alpha system. However, if you configure a
>> 84 kernel for your specific system, it will be faster and smaller.
96 85
97 config HAVE_XTENSA_GPIO32 !! 86 To find out what type of Alpha system you have, you may want to
98 def_bool n !! 87 check out the Linux/Alpha FAQ, accessible on the WWW from
>> 88 <http://www.alphalinux.org/>. In summary:
99 89
100 config KASAN_SHADOW_OFFSET !! 90 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
101 hex !! 91 Alpha-XL XL-233, XL-266
102 default 0x6e400000 !! 92 AlphaBook1 Alpha laptop
>> 93 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
>> 94 Cabriolet AlphaPC64, AlphaPCI64
>> 95 DP264 DP264 / DS20 / ES40 / DS10 / DS10L
>> 96 EB164 EB164 21164 evaluation board
>> 97 EB64+ EB64+ 21064 evaluation board
>> 98 EB66 EB66 21066 evaluation board
>> 99 EB66+ EB66+ 21066 evaluation board
>> 100 Jensen DECpc 150, DEC 2000 models 300, 500
>> 101 LX164 AlphaPC164-LX
>> 102 Lynx AS 2100A
>> 103 Miata Personal Workstation 433/500/600 a/au
>> 104 Marvel AlphaServer ES47 / ES80 / GS1280
>> 105 Mikasa AS 1000
>> 106 Noname AXPpci33, UDB (Multia)
>> 107 Noritake AS 1000A, AS 600A, AS 800
>> 108 PC164 AlphaPC164
>> 109 Rawhide AS 1200, AS 4000, AS 4100
>> 110 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
>> 111 SX164 AlphaPC164-SX
>> 112 Sable AS 2000, AS 2100
>> 113 Shark DS 20L
>> 114 Takara Takara (OEM)
>> 115 Titan AlphaServer ES45 / DS25 / DS15
>> 116 Wildfire AlphaServer GS 40/80/160/320
103 117
104 config CPU_BIG_ENDIAN !! 118 If you don't know what to do, choose "generic".
105 def_bool $(success,test "$(shell,echo <<
106 119
107 config CPU_LITTLE_ENDIAN !! 120 config ALPHA_GENERIC
108 def_bool !CPU_BIG_ENDIAN !! 121 bool "Generic"
>> 122 depends on TTY
>> 123 select HAVE_EISA
>> 124 help
>> 125 A generic kernel will run on all supported Alpha hardware.
109 126
110 config CC_HAVE_CALL0_ABI !! 127 config ALPHA_ALCOR
111 def_bool $(success,test "$(shell,echo !! 128 bool "Alcor/Alpha-XLT"
>> 129 select HAVE_EISA
>> 130 help
>> 131 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
>> 132 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
>> 133 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
>> 134 controller (256-bit memory bus) and a PCI interface. It also does
>> 135 all the work required to support an external Bcache and to maintain
>> 136 memory coherence when a PCI device DMAs into (or out of) memory.
112 137
113 menu "Processor type and features" !! 138 config ALPHA_XL
>> 139 bool "Alpha-XL"
>> 140 help
>> 141 XL-233 and XL-266-based Alpha systems.
114 142
115 choice !! 143 config ALPHA_BOOK1
116 prompt "Xtensa Processor Configuration !! 144 bool "AlphaBook1"
117 default XTENSA_VARIANT_FSF !! 145 help
>> 146 Dec AlphaBook1/Burns Alpha-based laptops.
118 147
119 config XTENSA_VARIANT_FSF !! 148 config ALPHA_AVANTI_CH
120 bool "fsf - default (not generic) conf !! 149 bool "Avanti"
121 select MMU <<
122 150
123 config XTENSA_VARIANT_DC232B !! 151 config ALPHA_CABRIOLET
124 bool "dc232b - Diamond 232L Standard C !! 152 bool "Cabriolet"
125 select MMU <<
126 select HAVE_XTENSA_GPIO32 <<
127 help 153 help
128 This variant refers to Tensilica's D !! 154 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
>> 155 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
>> 156 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
>> 157 Bcache SIMMs. Requires power supply with 3.3V output.
129 158
130 config XTENSA_VARIANT_DC233C !! 159 config ALPHA_DP264
131 bool "dc233c - Diamond 233L Standard C !! 160 bool "DP264"
132 select MMU <<
133 select HAVE_XTENSA_GPIO32 <<
134 help 161 help
135 This variant refers to Tensilica's D !! 162 Various 21264 systems with the tsunami core logic chipset.
>> 163 API Networks: 264DP, UP2000(+), CS20;
>> 164 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
136 165
137 config XTENSA_VARIANT_CUSTOM !! 166 config ALPHA_EB164
138 bool "Custom Xtensa processor configur !! 167 bool "EB164"
139 select HAVE_XTENSA_GPIO32 <<
140 help 168 help
141 Select this variant to use a custom !! 169 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
142 You will be prompted for a processor !! 170 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
143 endchoice !! 171 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
>> 172 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
>> 173 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
>> 174 motherboard. Requires power supply with 3.3V output.
144 175
145 config XTENSA_VARIANT_CUSTOM_NAME !! 176 config ALPHA_EB64P_CH
146 string "Xtensa Processor Custom Core V !! 177 bool "EB64+"
147 depends on XTENSA_VARIANT_CUSTOM !! 178
148 help !! 179 config ALPHA_EB66
149 Provide the name of a custom Xtensa !! 180 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 181 help
174 Enable if core variant has Performan !! 182 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
175 External Registers Interface. !! 183 identical to EB64+. Baby PC-AT size. Runs from standard PC power
>> 184 supply. The EB66 schematic was published as a marketing poster
>> 185 advertising the 21066 as "the first microprocessor in the world with
>> 186 embedded PCI".
176 187
177 If unsure, say N. !! 188 config ALPHA_EB66P
>> 189 bool "EB66+"
>> 190 help
>> 191 Later variant of the EB66 board.
178 192
179 config XTENSA_FAKE_NMI !! 193 config ALPHA_EIGER
180 bool "Treat PMM IRQ as NMI" !! 194 bool "Eiger"
181 depends on XTENSA_VARIANT_HAVE_PERF_EV <<
182 default n <<
183 help 195 help
184 If PMM IRQ is the only IRQ at EXCM l !! 196 Apparently an obscure OEM single-board computer based on the
185 treat it as NMI, which improves accu !! 197 Typhoon/Tsunami chipset family. Information on it is scanty.
186 198
187 If there are other interrupts at or !! 199 config ALPHA_JENSEN
188 but not above the EXCM level, PMM IR !! 200 bool "Jensen"
189 but only if these IRQs are not used. !! 201 select HAVE_EISA
190 saying that this is not safe, and a !! 202 help
191 actually fire. !! 203 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
>> 204 of the first-generation Alpha systems. A number of these systems
>> 205 seem to be available on the second- hand market. The Jensen is a
>> 206 floor-standing tower system which originally used a 150MHz 21064 It
>> 207 used programmable logic to interface a 486 EISA I/O bridge to the
>> 208 CPU.
192 209
193 If unsure, say N. !! 210 config ALPHA_LX164
>> 211 bool "LX164"
>> 212 help
>> 213 A technical overview of this board is available at
>> 214 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
194 215
195 config PFAULT !! 216 config ALPHA_LYNX
196 bool "Handle protection faults" if EXP !! 217 bool "Lynx"
197 default y !! 218 select HAVE_EISA
198 help 219 help
199 Handle protection faults. MMU config !! 220 AlphaServer 2100A-based systems.
200 noMMU configurations may disable it <<
201 generates protection faults or fault <<
202 221
203 If unsure, say Y. !! 222 config ALPHA_MARVEL
>> 223 bool "Marvel"
>> 224 help
>> 225 AlphaServer ES47 / ES80 / GS1280 based on EV7.
204 226
205 config XTENSA_UNALIGNED_USER !! 227 config ALPHA_MIATA
206 bool "Unaligned memory access in user !! 228 bool "Miata"
>> 229 select HAVE_EISA
207 help 230 help
208 The Xtensa architecture currently do !! 231 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
209 memory accesses in hardware but thro !! 232 or 600au).
210 Per default, unaligned memory access <<
211 233
212 Say Y here to enable unaligned memor !! 234 config ALPHA_MIKASA
>> 235 bool "Mikasa"
>> 236 help
>> 237 AlphaServer 1000-based Alpha systems.
213 238
214 config XTENSA_LOAD_STORE !! 239 config ALPHA_NAUTILUS
215 bool "Load/store exception handler for !! 240 bool "Nautilus"
216 help 241 help
217 The Xtensa architecture only allows !! 242 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 <<
222 243
223 Say Y here to enable exception handl !! 244 config ALPHA_NONAME_CH
224 byte and 2-byte access to memory att !! 245 bool "Noname"
225 246
226 config HAVE_SMP !! 247 config ALPHA_NORITAKE
227 bool "System Supports SMP (MX)" !! 248 bool "Noritake"
228 depends on XTENSA_VARIANT_CUSTOM !! 249 select HAVE_EISA
229 select XTENSA_MX <<
230 help 250 help
231 This option is used to indicate that !! 251 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
232 supports Multiprocessing. Multiproce !! 252 systems.
233 the CPU core definition and currentl <<
234 <<
235 Multiprocessor support is implemente <<
236 interrupt controllers. <<
237 253
238 The MX interrupt distributer adds In !! 254 config ALPHA_PC164
239 and causes the IRQ numbers to be inc !! 255 bool "PC164"
240 like the open cores ethernet driver <<
241 256
242 You still have to select "Enable SMP !! 257 config ALPHA_P2K
>> 258 bool "Platform2000"
243 259
244 config SMP !! 260 config ALPHA_RAWHIDE
245 bool "Enable Symmetric multi-processin !! 261 bool "Rawhide"
246 depends on HAVE_SMP !! 262 select HAVE_EISA
247 select GENERIC_SMP_IDLE_THREAD <<
248 help 263 help
249 Enabled SMP Software; allows more th !! 264 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
250 to be activated during startup. !! 265 See HOWTO at
251 !! 266 <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" <<
257 267
258 config HOTPLUG_CPU !! 268 config ALPHA_RUFFIAN
259 bool "Enable CPU hotplug support" !! 269 bool "Ruffian"
260 depends on SMP <<
261 help 270 help
262 Say Y here to allow turning CPUs off !! 271 Samsung APC164UX. There is a page on known problems and workarounds
263 controlled through /sys/devices/syst !! 272 at <http://www.alphalinux.org/faq/FAQ-11.html>.
264 273
265 Say N if you want to disable CPU hot !! 274 config ALPHA_RX164
>> 275 bool "RX164"
266 276
267 config SECONDARY_RESET_VECTOR !! 277 config ALPHA_SX164
268 bool "Secondary cores use alternative !! 278 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 <<
275 279
276 config FAST_SYSCALL_XTENSA !! 280 config ALPHA_SABLE
277 bool "Enable fast atomic syscalls" !! 281 bool "Sable"
278 default n !! 282 select HAVE_EISA
279 help 283 help
280 fast_syscall_xtensa is a syscall tha !! 284 Digital AlphaServer 2000 and 2100-based systems.
281 on UP kernel when processor has no s <<
282 285
283 This syscall is deprecated. It may h !! 286 config ALPHA_SHARK
284 invalid arguments. It is provided on !! 287 bool "Shark"
285 Only enable it if your userspace sof <<
286 <<
287 If unsure, say N. <<
288 288
289 config FAST_SYSCALL_SPILL_REGISTERS !! 289 config ALPHA_TAKARA
290 bool "Enable spill registers syscall" !! 290 bool "Takara"
291 default n <<
292 help 291 help
293 fast_syscall_spill_registers is a sy !! 292 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 <<
299 293
300 If unsure, say N. !! 294 config ALPHA_TITAN
>> 295 bool "Titan"
>> 296 help
>> 297 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
301 298
302 choice !! 299 config ALPHA_WILDFIRE
303 prompt "Kernel ABI" !! 300 bool "Wildfire"
304 default KERNEL_ABI_DEFAULT <<
305 help 301 help
306 Select ABI for the kernel code. This !! 302 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. <<
331 303
332 endchoice 304 endchoice
333 305
334 config USER_ABI_CALL0 !! 306 # clear all implied options (don't want default values for those):
>> 307 # Most of these machines have ISA slots; not exactly sure which don't,
>> 308 # and this doesn't activate hordes of code, so do it always.
>> 309 config ISA
335 bool 310 bool
336 !! 311 default y
337 choice <<
338 prompt "Userspace ABI" <<
339 default USER_ABI_DEFAULT <<
340 help 312 help
341 Select supported userspace ABI. !! 313 Find out whether you have ISA slots on your motherboard. ISA is the
>> 314 name of a bus system, i.e. the way the CPU talks to the other stuff
>> 315 inside your box. Other bus systems are PCI, EISA, MicroChannel
>> 316 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
>> 317 newer boards don't support it. If you have ISA, say Y, otherwise N.
342 318
343 If unsure, choose the default ABI. !! 319 config ISA_DMA_API
>> 320 bool
>> 321 default y
344 322
345 config USER_ABI_DEFAULT !! 323 config ALPHA_NONAME
346 bool "Default ABI only" !! 324 bool
>> 325 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
>> 326 default y
347 help 327 help
348 Assume default userspace ABI. For XE !! 328 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
349 call0 ABI binaries may be run on suc !! 329 UDB). This design was produced by Digital's Technical OEM (TOEM)
350 will not work correctly for them. !! 330 group. It uses the 21066 processor running at 166MHz or 233MHz. It
>> 331 is a baby-AT size, and runs from a standard PC power supply. It has
>> 332 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
>> 333 2 versions, with either PS/2 or large DIN connectors for the
>> 334 keyboard.
351 335
352 config USER_ABI_CALL0_ONLY !! 336 config ALPHA_EV4
353 bool "Call0 ABI only" !! 337 bool
354 select USER_ABI_CALL0 !! 338 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 !! 339 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 <<
359 340
360 Choose this option if you're plannin !! 341 config ALPHA_LCA
361 built with call0 ABI. !! 342 bool
>> 343 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
>> 344 default y
362 345
363 config USER_ABI_CALL0_PROBE !! 346 config ALPHA_APECS
364 bool "Support both windowed and call0 !! 347 bool
365 select USER_ABI_CALL0 !! 348 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
>> 349 default y
>> 350
>> 351 config ALPHA_EB64P
>> 352 bool
>> 353 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
>> 354 default y
366 help 355 help
367 Select this option to support both w !! 356 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
368 ABIs. When enabled all processes are !! 357 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
369 and a fast user exception handler fo !! 358 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
370 used to turn on PS.WOE bit on the fi !! 359 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
371 the userspace. !! 360 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
>> 361 Runs from standard PC power supply.
>> 362
>> 363 config ALPHA_EV5
>> 364 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
>> 365 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
372 366
373 This option should be enabled for th !! 367 config ALPHA_EV4
374 both call0 and windowed ABIs in user !! 368 bool
>> 369 default y if ALPHA_LYNX && !ALPHA_EV5
375 370
376 Note that Xtensa ISA does not guaran !! 371 config ALPHA_CIA
377 raise an illegal instruction excepti !! 372 bool
378 PS.WOE is disabled, check whether th !! 373 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
>> 374 default y
379 375
380 endchoice !! 376 config ALPHA_EV56
>> 377 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
>> 378 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
381 379
382 endmenu !! 380 config ALPHA_EV56
>> 381 prompt "EV56 CPU (speed >= 333MHz)?"
>> 382 depends on ALPHA_NORITAKE || ALPHA_PRIMO
>> 383
>> 384 config ALPHA_EV56
>> 385 prompt "EV56 CPU (speed >= 400MHz)?"
>> 386 depends on ALPHA_RAWHIDE
383 387
384 config XTENSA_CALIBRATE_CCOUNT !! 388 config ALPHA_PRIMO
385 def_bool n !! 389 bool "EV5 CPU daughtercard (model 5/xxx)?"
>> 390 depends on ALPHA_NORITAKE || ALPHA_MIKASA
386 help 391 help
387 On some platforms (XT2000, for examp !! 392 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 <<
390 393
391 config SERIAL_CONSOLE !! 394 config ALPHA_GAMMA
392 def_bool n !! 395 bool "EV5 CPU(s) (model 5/xxx)?"
>> 396 depends on ALPHA_SABLE
>> 397 help
>> 398 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
393 399
394 config PLATFORM_HAVE_XIP !! 400 config ALPHA_GAMMA
395 def_bool n !! 401 bool
>> 402 depends on ALPHA_LYNX
>> 403 default y
396 404
397 menu "Platform options" !! 405 config ALPHA_T2
>> 406 bool
>> 407 depends on ALPHA_SABLE || ALPHA_LYNX
>> 408 default y
398 409
399 choice !! 410 config ALPHA_PYXIS
400 prompt "Xtensa System Type" !! 411 bool
401 default XTENSA_PLATFORM_ISS !! 412 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
>> 413 default y
402 414
403 config XTENSA_PLATFORM_ISS !! 415 config ALPHA_EV6
404 bool "ISS" !! 416 bool
405 select XTENSA_CALIBRATE_CCOUNT !! 417 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
406 select SERIAL_CONSOLE !! 418 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 <<
426 419
427 endchoice !! 420 config ALPHA_TSUNAMI
>> 421 bool
>> 422 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
>> 423 default y
428 424
429 config PLATFORM_NR_IRQS !! 425 config ALPHA_EV67
430 int !! 426 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
431 default 3 if XTENSA_PLATFORM_XT2000 !! 427 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
432 default 0 !! 428 help
>> 429 Is this a machine based on the EV67 core? If in doubt, select N here
>> 430 and the machine will be treated as an EV6.
433 431
434 config XTENSA_CPU_CLOCK !! 432 config ALPHA_MCPCIA
435 int "CPU clock rate [MHz]" !! 433 bool
436 depends on !XTENSA_CALIBRATE_CCOUNT !! 434 depends on ALPHA_RAWHIDE
437 default 16 !! 435 default y
438 436
439 config GENERIC_CALIBRATE_DELAY !! 437 config ALPHA_POLARIS
440 bool "Auto calibration of the BogoMIPS !! 438 bool
441 help !! 439 depends on ALPHA_RX164
442 The BogoMIPS value can easily be der !! 440 default y
443 441
444 config CMDLINE_BOOL !! 442 config ALPHA_IRONGATE
445 bool "Default bootloader kernel argume !! 443 bool
>> 444 depends on ALPHA_NAUTILUS
>> 445 default y
446 446
447 config CMDLINE !! 447 config GENERIC_HWEIGHT
448 string "Initial kernel command string" !! 448 bool
449 depends on CMDLINE_BOOL !! 449 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 <<
457 450
458 config USE_OF !! 451 config ALPHA_AVANTI
459 bool "Flattened Device Tree support" !! 452 bool
460 select OF !! 453 depends on ALPHA_XL || ALPHA_AVANTI_CH
461 select OF_EARLY_FLATTREE !! 454 default y
462 help 455 help
463 Include support for flattened device !! 456 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
>> 457 Alphas. Info at
>> 458 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
464 459
465 config BUILTIN_DTB_SOURCE !! 460 config ALPHA_BROKEN_IRQ_MASK
466 string "DTB to build into the kernel i !! 461 bool
467 depends on OF !! 462 depends on ALPHA_GENERIC || ALPHA_PC164
>> 463 default y
468 464
469 config PARSE_BOOTPARAM !! 465 config VGA_HOSE
470 bool "Parse bootparam block" !! 466 bool
>> 467 depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI)
471 default y 468 default y
472 help 469 help
473 Parse parameters passed to the kerne !! 470 Support VGA on an arbitrary hose; needed for several platforms
474 be disabled if the kernel is known t !! 471 which always have multiple hoses, and whose consoles support it.
475 472
476 If unsure, say Y. <<
477 473
478 choice !! 474 config ALPHA_QEMU
479 prompt "Semihosting interface" !! 475 bool "Run under QEMU emulation"
480 default XTENSA_SIMCALL_ISS !! 476 depends on !ALPHA_GENERIC
481 depends on XTENSA_PLATFORM_ISS <<
482 help 477 help
483 Choose semihosting interface that wi !! 478 Assume the presence of special features supported by QEMU PALcode
484 block device and networking. !! 479 that reduce the overhead of system emulation.
485 480
486 config XTENSA_SIMCALL_ISS !! 481 Generic kernels will auto-detect QEMU. But when building a
487 bool "simcall" !! 482 system-specific kernel, the assumption is that we want to
488 help !! 483 eliminate as many runtime tests as possible.
489 Use simcall instruction. simcall is <<
490 it does nothing on hardware. <<
491 484
492 config XTENSA_SIMCALL_GDBIO !! 485 If unsure, say N.
493 bool "GDBIO" <<
494 help <<
495 Use break instruction. It is availab <<
496 is attached to it via JTAG. <<
497 486
498 endchoice <<
499 487
500 config BLK_DEV_SIMDISK !! 488 config ALPHA_SRM
501 tristate "Host file-based simulated bl !! 489 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 !! 490 depends on TTY
503 depends on XTENSA_PLATFORM_ISS && BLOC !! 491 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 !! 492 help
505 Create block devices that map to fil !! 493 There are two different types of booting firmware on Alphas: SRM,
506 Device binding to host file may be c !! 494 which is command line driven, and ARC, which uses menus and arrow
507 interface provided the device is not !! 495 keys. Details about the Linux/Alpha booting process are contained in
508 !! 496 the Linux/Alpha FAQ, accessible on the WWW from
509 config BLK_DEV_SIMDISK_COUNT !! 497 <http://www.alphalinux.org/>.
510 int "Number of host file-based simulat !! 498
511 range 1 10 !! 499 The usual way to load Linux on an Alpha machine is to use MILO
512 depends on BLK_DEV_SIMDISK !! 500 (a bootloader that lets you pass command line parameters to the
513 default 2 !! 501 kernel just like lilo does for the x86 architecture) which can be
514 help !! 502 loaded either from ARC or can be installed directly as a permanent
515 This is the default minimal number o !! 503 firmware replacement from floppy (which requires changing a certain
516 Kernel/module parameter 'simdisk_cou !! 504 jumper on the motherboard). If you want to do either of these, say N
517 value at runtime. More file names (b !! 505 here. If MILO doesn't work on your system (true for Jensen
518 specified as parameters, simdisk_cou !! 506 motherboards), you can bypass it altogether and boot Linux directly
519 !! 507 from an SRM console; say Y here in order to do that. Note that you
520 config SIMDISK0_FILENAME !! 508 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. <<
544 509
545 If unsure, say N. 510 If unsure, say N.
546 511
547 config XTFPGA_LCD_BASE_ADDR !! 512 config ARCH_MAY_HAVE_PC_FDC
548 hex "XTFPGA LCD base address" !! 513 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/ <<
616 514
617 If unsure, say N. !! 515 config SMP
>> 516 bool "Symmetric multi-processing support"
>> 517 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
>> 518 help
>> 519 This enables support for systems with more than one CPU. If you have
>> 520 a system with only one CPU, say N. If you have a system with more
>> 521 than one CPU, say Y.
>> 522
>> 523 If you say N here, the kernel will run on uni- and multiprocessor
>> 524 machines, but will use only one CPU of a multiprocessor machine. If
>> 525 you say Y here, the kernel will run on many, but not all,
>> 526 uniprocessor machines. On a uniprocessor machine, the kernel
>> 527 will run faster if you say N here.
618 528
619 config MEMMAP_CACHEATTR !! 529 See also the SMP-HOWTO available at
620 hex "Cache attributes for the memory a !! 530 <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. <<
682 531
683 If unsure, leave the default value h !! 532 If you don't know what to do here, say N.
684 533
685 choice !! 534 config NR_CPUS
686 prompt "Relocatable vectors location" !! 535 int "Maximum number of CPUs (2-32)"
687 default XTENSA_VECTORS_IN_TEXT !! 536 range 2 32
>> 537 depends on SMP
>> 538 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
>> 539 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
688 help 540 help
689 Choose whether relocatable vectors a !! 541 MARVEL support can handle a maximum of 32 CPUs, all the others
690 or placed separately at runtime. Thi !! 542 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 <<
712 543
713 config VECTORS_ADDR !! 544 config ARCH_SPARSEMEM_ENABLE
714 hex "Kernel vectors virtual address" !! 545 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 546 help
738 This is the base address used for bo !! 547 Say Y to support efficient handling of discontiguous physical memory,
739 in noMMU configurations. !! 548 for systems that have huge holes in the physical address space.
>> 549
>> 550 config ALPHA_WTINT
>> 551 bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC
>> 552 default y if ALPHA_QEMU
>> 553 default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA)
>> 554 default n if !ALPHA_SRM && !ALPHA_GENERIC
>> 555 default y if SMP
>> 556 help
>> 557 The Wait for Interrupt (WTINT) PALcall attempts to place the CPU
>> 558 to sleep until the next interrupt. This may reduce the power
>> 559 consumed, and the heat produced by the computer. However, it has
>> 560 the side effect of making the cycle counter unreliable as a timing
>> 561 device across the sleep.
740 562
741 If unsure, leave the default value h !! 563 For emulation under QEMU, definitely say Y here, as we have other
>> 564 mechanisms for measuring time than the cycle counter.
742 565
743 choice !! 566 For EV4 (but not LCA), EV5 and EV56 systems, or for systems running
744 prompt "KSEG layout" !! 567 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. <<
771 568
772 endchoice !! 569 For SMP systems we cannot use the cycle counter for timing anyway,
>> 570 so you might as well say Y here.
773 571
774 config HIGHMEM !! 572 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 <<
804 573
805 Don't change if unsure. !! 574 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
>> 575 config ALPHA_LARGE_VMALLOC
>> 576 bool
>> 577 help
>> 578 Process creation and other aspects of virtual memory management can
>> 579 be streamlined if we restrict the kernel to one PGD for all vmalloc
>> 580 allocations. This equates to about 8GB.
>> 581
>> 582 Under normal circumstances, this is so far and above what is needed
>> 583 as to be laughable. However, there are certain applications (such
>> 584 as benchmark-grade in-kernel web serving) that can make use of as
>> 585 much vmalloc space as is available.
>> 586
>> 587 Say N unless you know you need gobs and gobs of vmalloc space.
>> 588
>> 589 config VERBOSE_MCHECK
>> 590 bool "Verbose Machine Checks"
>> 591
>> 592 config VERBOSE_MCHECK_ON
>> 593 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
>> 594 depends on VERBOSE_MCHECK
>> 595 default 1
>> 596 help
>> 597 This option allows the default printing mode to be set, and then
>> 598 possibly overridden by a boot command argument.
>> 599
>> 600 For example, if one wanted the option of printing verbose
>> 601 machine checks, but wanted the default to be as if verbose
>> 602 machine check printing was turned off, then one would choose
>> 603 the printing mode to be 0. Then, upon reboot, one could add
>> 604 the boot command line "verbose_mcheck=1" to get the normal
>> 605 verbose machine check printing, or "verbose_mcheck=2" to get
>> 606 the maximum information available.
806 607
807 endmenu !! 608 Take the default (1) unless you want more control or more info.
808 609
809 menu "Power management options" !! 610 choice
>> 611 prompt "Timer interrupt frequency (HZ)?"
>> 612 default HZ_128 if ALPHA_QEMU
>> 613 default HZ_1200 if ALPHA_RAWHIDE
>> 614 default HZ_1024
>> 615 help
>> 616 The frequency at which timer interrupts occur. A high frequency
>> 617 minimizes latency, whereas a low frequency minimizes overhead of
>> 618 process accounting. The later effect is especially significant
>> 619 when being run under QEMU.
>> 620
>> 621 Note that some Alpha hardware cannot change the interrupt frequency
>> 622 of the timer. If unsure, say 1024 (or 1200 for Rawhide).
>> 623
>> 624 config HZ_32
>> 625 bool "32 Hz"
>> 626 config HZ_64
>> 627 bool "64 Hz"
>> 628 config HZ_128
>> 629 bool "128 Hz"
>> 630 config HZ_256
>> 631 bool "256 Hz"
>> 632 config HZ_1024
>> 633 bool "1024 Hz"
>> 634 config HZ_1200
>> 635 bool "1200 Hz"
>> 636 endchoice
810 637
811 config ARCH_HIBERNATION_POSSIBLE !! 638 config HZ
812 def_bool y !! 639 int
>> 640 default 32 if HZ_32
>> 641 default 64 if HZ_64
>> 642 default 128 if HZ_128
>> 643 default 256 if HZ_256
>> 644 default 1200 if HZ_1200
>> 645 default 1024
>> 646
>> 647 config SRM_ENV
>> 648 tristate "SRM environment through procfs"
>> 649 depends on PROC_FS
>> 650 help
>> 651 If you enable this option, a subdirectory inside /proc called
>> 652 /proc/srm_environment will give you access to the all important
>> 653 SRM environment variables (those which have a name) and also
>> 654 to all others (by their internal number).
>> 655
>> 656 SRM is something like a BIOS for Alpha machines. There are some
>> 657 other such BIOSes, like AlphaBIOS, which this driver cannot
>> 658 support (hey, that's not SRM!).
>> 659
>> 660 Despite the fact that this driver doesn't work on all Alphas (but
>> 661 only on those which have SRM as their firmware), it's save to
>> 662 build it even if your particular machine doesn't know about SRM
>> 663 (or if you intend to compile a generic kernel). It will simply
>> 664 not create those subdirectory in /proc (and give you some warning,
>> 665 of course).
813 666
814 source "kernel/power/Kconfig" !! 667 This driver is also available as a module and will be called
>> 668 srm_env then.
815 669
816 endmenu 670 endmenu
>> 671
>> 672 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
>> 673 # but we also need it if VGA_HOSE is set
>> 674 config DUMMY_CONSOLE
>> 675 bool
>> 676 depends on VGA_HOSE
>> 677 default y
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