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 !! 6 select ARCH_MIGHT_HAVE_PC_PARPORT
7 select ARCH_HAS_CURRENT_STACK_POINTER !! 7 select ARCH_MIGHT_HAVE_PC_SERIO
8 select ARCH_HAS_DEBUG_VM_PGTABLE !! 8 select ARCH_NO_PREEMPT
9 select ARCH_HAS_DMA_PREP_COHERENT if M !! 9 select ARCH_NO_SG_CHAIN
10 select ARCH_HAS_GCOV_PROFILE_ALL !! 10 select ARCH_USE_CMPXCHG_LOCKREF
11 select ARCH_HAS_KCOV !! 11 select DMA_OPS if PCI
12 select ARCH_HAS_SYNC_DMA_FOR_CPU if MM !! 12 select FORCE_PCI if !ALPHA_JENSEN
13 select ARCH_HAS_SYNC_DMA_FOR_DEVICE if !! 13 select PCI_DOMAINS if PCI
14 select ARCH_HAS_DMA_SET_UNCACHED if MM !! 14 select PCI_SYSCALL if PCI
15 select ARCH_HAS_STRNCPY_FROM_USER if ! !! 15 select HAVE_AOUT
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 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 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_CPU_VULNERABILITIES
>> 30 select GENERIC_SMP_IDLE_THREAD
>> 31 select GENERIC_STRNCPY_FROM_USER
>> 32 select GENERIC_STRNLEN_USER
>> 33 select HAVE_ARCH_AUDITSYSCALL
>> 34 select HAVE_MOD_ARCH_SPECIFIC
57 select MODULES_USE_ELF_RELA 35 select MODULES_USE_ELF_RELA
58 select PERF_USE_VMALLOC !! 36 select ODD_RT_SIGACTION
59 select TRACE_IRQFLAGS_SUPPORT !! 37 select OLD_SIGSUSPEND
60 help !! 38 select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67
61 Xtensa processors are 32-bit RISC ma !! 39 select MMU_GATHER_NO_RANGE
62 primarily for embedded systems. The !! 40 select SET_FS
63 configurable and extensible. The Li !! 41 select SPARSEMEM_EXTREME if SPARSEMEM
64 architecture supports all processor !! 42 select ZONE_DMA
65 with reasonable minimum requirements !! 43 help
66 a home page at <http://www.linux-xte !! 44 The Alpha is a 64-bit general-purpose processor designed and
>> 45 marketed by the Digital Equipment Corporation of blessed memory,
>> 46 now Hewlett-Packard. The Alpha Linux project has a home page at
>> 47 <http://www.alphalinux.org/>.
67 48
68 config GENERIC_HWEIGHT !! 49 config 64BIT
69 def_bool y 50 def_bool y
70 51
>> 52 config MMU
>> 53 bool
>> 54 default y
>> 55
71 config ARCH_HAS_ILOG2_U32 56 config ARCH_HAS_ILOG2_U32
72 def_bool n !! 57 bool
>> 58 default n
73 59
74 config ARCH_HAS_ILOG2_U64 60 config ARCH_HAS_ILOG2_U64
75 def_bool n !! 61 bool
>> 62 default n
76 63
77 config ARCH_MTD_XIP !! 64 config GENERIC_CALIBRATE_DELAY
78 def_bool y !! 65 bool
>> 66 default y
79 67
80 config NO_IOPORT_MAP !! 68 config GENERIC_ISA_DMA
81 def_bool n !! 69 bool
>> 70 default y
82 71
83 config HZ !! 72 config PGTABLE_LEVELS
84 int 73 int
85 default 100 !! 74 default 3
86 75
87 config LOCKDEP_SUPPORT !! 76 config AUDIT_ARCH
88 def_bool y !! 77 bool
89 78
90 config STACKTRACE_SUPPORT !! 79 menu "System setup"
91 def_bool y <<
92 80
93 config MMU !! 81 choice
94 def_bool n !! 82 prompt "Alpha system type"
95 select PFAULT !! 83 default ALPHA_GENERIC
>> 84 help
>> 85 This is the system type of your hardware. A "generic" kernel will
>> 86 run on any supported Alpha system. However, if you configure a
>> 87 kernel for your specific system, it will be faster and smaller.
96 88
97 config HAVE_XTENSA_GPIO32 !! 89 To find out what type of Alpha system you have, you may want to
98 def_bool n !! 90 check out the Linux/Alpha FAQ, accessible on the WWW from
>> 91 <http://www.alphalinux.org/>. In summary:
99 92
100 config KASAN_SHADOW_OFFSET !! 93 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
101 hex !! 94 Alpha-XL XL-233, XL-266
102 default 0x6e400000 !! 95 AlphaBook1 Alpha laptop
>> 96 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
>> 97 Cabriolet AlphaPC64, AlphaPCI64
>> 98 DP264 DP264 / DS20 / ES40 / DS10 / DS10L
>> 99 EB164 EB164 21164 evaluation board
>> 100 EB64+ EB64+ 21064 evaluation board
>> 101 EB66 EB66 21066 evaluation board
>> 102 EB66+ EB66+ 21066 evaluation board
>> 103 Jensen DECpc 150, DEC 2000 models 300, 500
>> 104 LX164 AlphaPC164-LX
>> 105 Lynx AS 2100A
>> 106 Miata Personal Workstation 433/500/600 a/au
>> 107 Marvel AlphaServer ES47 / ES80 / GS1280
>> 108 Mikasa AS 1000
>> 109 Noname AXPpci33, UDB (Multia)
>> 110 Noritake AS 1000A, AS 600A, AS 800
>> 111 PC164 AlphaPC164
>> 112 Rawhide AS 1200, AS 4000, AS 4100
>> 113 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
>> 114 SX164 AlphaPC164-SX
>> 115 Sable AS 2000, AS 2100
>> 116 Shark DS 20L
>> 117 Takara Takara (OEM)
>> 118 Titan AlphaServer ES45 / DS25 / DS15
>> 119 Wildfire AlphaServer GS 40/80/160/320
103 120
104 config CPU_BIG_ENDIAN !! 121 If you don't know what to do, choose "generic".
105 def_bool $(success,test "$(shell,echo <<
106 122
107 config CPU_LITTLE_ENDIAN !! 123 config ALPHA_GENERIC
108 def_bool !CPU_BIG_ENDIAN !! 124 bool "Generic"
>> 125 depends on TTY
>> 126 select HAVE_EISA
>> 127 help
>> 128 A generic kernel will run on all supported Alpha hardware.
109 129
110 config CC_HAVE_CALL0_ABI !! 130 config ALPHA_ALCOR
111 def_bool $(success,test "$(shell,echo !! 131 bool "Alcor/Alpha-XLT"
>> 132 select HAVE_EISA
>> 133 help
>> 134 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
>> 135 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
>> 136 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
>> 137 controller (256-bit memory bus) and a PCI interface. It also does
>> 138 all the work required to support an external Bcache and to maintain
>> 139 memory coherence when a PCI device DMAs into (or out of) memory.
112 140
113 menu "Processor type and features" !! 141 config ALPHA_XL
>> 142 bool "Alpha-XL"
>> 143 help
>> 144 XL-233 and XL-266-based Alpha systems.
114 145
115 choice !! 146 config ALPHA_BOOK1
116 prompt "Xtensa Processor Configuration !! 147 bool "AlphaBook1"
117 default XTENSA_VARIANT_FSF !! 148 help
>> 149 Dec AlphaBook1/Burns Alpha-based laptops.
118 150
119 config XTENSA_VARIANT_FSF !! 151 config ALPHA_AVANTI_CH
120 bool "fsf - default (not generic) conf !! 152 bool "Avanti"
121 select MMU <<
122 153
123 config XTENSA_VARIANT_DC232B !! 154 config ALPHA_CABRIOLET
124 bool "dc232b - Diamond 232L Standard C !! 155 bool "Cabriolet"
125 select MMU <<
126 select HAVE_XTENSA_GPIO32 <<
127 help 156 help
128 This variant refers to Tensilica's D !! 157 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
>> 158 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
>> 159 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
>> 160 Bcache SIMMs. Requires power supply with 3.3V output.
129 161
130 config XTENSA_VARIANT_DC233C !! 162 config ALPHA_DP264
131 bool "dc233c - Diamond 233L Standard C !! 163 bool "DP264"
132 select MMU <<
133 select HAVE_XTENSA_GPIO32 <<
134 help 164 help
135 This variant refers to Tensilica's D !! 165 Various 21264 systems with the tsunami core logic chipset.
>> 166 API Networks: 264DP, UP2000(+), CS20;
>> 167 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
136 168
137 config XTENSA_VARIANT_CUSTOM !! 169 config ALPHA_EB164
138 bool "Custom Xtensa processor configur !! 170 bool "EB164"
139 select HAVE_XTENSA_GPIO32 <<
140 help 171 help
141 Select this variant to use a custom !! 172 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
142 You will be prompted for a processor !! 173 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
143 endchoice !! 174 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
>> 175 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
>> 176 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
>> 177 motherboard. Requires power supply with 3.3V output.
144 178
145 config XTENSA_VARIANT_CUSTOM_NAME !! 179 config ALPHA_EB64P_CH
146 string "Xtensa Processor Custom Core V !! 180 bool "EB64+"
147 depends on XTENSA_VARIANT_CUSTOM !! 181
148 help !! 182 config ALPHA_EB66
149 Provide the name of a custom Xtensa !! 183 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 184 help
174 Enable if core variant has Performan !! 185 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
175 External Registers Interface. !! 186 identical to EB64+. Baby PC-AT size. Runs from standard PC power
>> 187 supply. The EB66 schematic was published as a marketing poster
>> 188 advertising the 21066 as "the first microprocessor in the world with
>> 189 embedded PCI".
176 190
177 If unsure, say N. !! 191 config ALPHA_EB66P
>> 192 bool "EB66+"
>> 193 help
>> 194 Later variant of the EB66 board.
178 195
179 config XTENSA_FAKE_NMI !! 196 config ALPHA_EIGER
180 bool "Treat PMM IRQ as NMI" !! 197 bool "Eiger"
181 depends on XTENSA_VARIANT_HAVE_PERF_EV <<
182 default n <<
183 help 198 help
184 If PMM IRQ is the only IRQ at EXCM l !! 199 Apparently an obscure OEM single-board computer based on the
185 treat it as NMI, which improves accu !! 200 Typhoon/Tsunami chipset family. Information on it is scanty.
186 201
187 If there are other interrupts at or !! 202 config ALPHA_JENSEN
188 but not above the EXCM level, PMM IR !! 203 bool "Jensen"
189 but only if these IRQs are not used. !! 204 depends on BROKEN
190 saying that this is not safe, and a !! 205 select HAVE_EISA
191 actually fire. !! 206 help
>> 207 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
>> 208 of the first-generation Alpha systems. A number of these systems
>> 209 seem to be available on the second- hand market. The Jensen is a
>> 210 floor-standing tower system which originally used a 150MHz 21064 It
>> 211 used programmable logic to interface a 486 EISA I/O bridge to the
>> 212 CPU.
192 213
193 If unsure, say N. !! 214 config ALPHA_LX164
>> 215 bool "LX164"
>> 216 help
>> 217 A technical overview of this board is available at
>> 218 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
194 219
195 config PFAULT !! 220 config ALPHA_LYNX
196 bool "Handle protection faults" if EXP !! 221 bool "Lynx"
197 default y !! 222 select HAVE_EISA
198 help 223 help
199 Handle protection faults. MMU config !! 224 AlphaServer 2100A-based systems.
200 noMMU configurations may disable it <<
201 generates protection faults or fault <<
202 225
203 If unsure, say Y. !! 226 config ALPHA_MARVEL
>> 227 bool "Marvel"
>> 228 help
>> 229 AlphaServer ES47 / ES80 / GS1280 based on EV7.
204 230
205 config XTENSA_UNALIGNED_USER !! 231 config ALPHA_MIATA
206 bool "Unaligned memory access in user !! 232 bool "Miata"
>> 233 select HAVE_EISA
207 help 234 help
208 The Xtensa architecture currently do !! 235 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
209 memory accesses in hardware but thro !! 236 or 600au).
210 Per default, unaligned memory access <<
211 237
212 Say Y here to enable unaligned memor !! 238 config ALPHA_MIKASA
>> 239 bool "Mikasa"
>> 240 help
>> 241 AlphaServer 1000-based Alpha systems.
213 242
214 config XTENSA_LOAD_STORE !! 243 config ALPHA_NAUTILUS
215 bool "Load/store exception handler for !! 244 bool "Nautilus"
216 help 245 help
217 The Xtensa architecture only allows !! 246 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 <<
222 247
223 Say Y here to enable exception handl !! 248 config ALPHA_NONAME_CH
224 byte and 2-byte access to memory att !! 249 bool "Noname"
225 250
226 config HAVE_SMP !! 251 config ALPHA_NORITAKE
227 bool "System Supports SMP (MX)" !! 252 bool "Noritake"
228 depends on XTENSA_VARIANT_CUSTOM !! 253 select HAVE_EISA
229 select XTENSA_MX <<
230 help 254 help
231 This option is used to indicate that !! 255 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
232 supports Multiprocessing. Multiproce !! 256 systems.
233 the CPU core definition and currentl <<
234 257
235 Multiprocessor support is implemente !! 258 config ALPHA_PC164
236 interrupt controllers. !! 259 bool "PC164"
237 260
238 The MX interrupt distributer adds In !! 261 config ALPHA_P2K
239 and causes the IRQ numbers to be inc !! 262 bool "Platform2000"
240 like the open cores ethernet driver <<
241 263
242 You still have to select "Enable SMP !! 264 config ALPHA_RAWHIDE
243 !! 265 bool "Rawhide"
244 config SMP !! 266 select HAVE_EISA
245 bool "Enable Symmetric multi-processin <<
246 depends on HAVE_SMP <<
247 select GENERIC_SMP_IDLE_THREAD <<
248 help 267 help
249 Enabled SMP Software; allows more th !! 268 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
250 to be activated during startup. !! 269 See HOWTO at
251 !! 270 <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" <<
257 271
258 config HOTPLUG_CPU !! 272 config ALPHA_RUFFIAN
259 bool "Enable CPU hotplug support" !! 273 bool "Ruffian"
260 depends on SMP <<
261 help 274 help
262 Say Y here to allow turning CPUs off !! 275 Samsung APC164UX. There is a page on known problems and workarounds
263 controlled through /sys/devices/syst !! 276 at <http://www.alphalinux.org/faq/FAQ-11.html>.
264 277
265 Say N if you want to disable CPU hot !! 278 config ALPHA_RX164
>> 279 bool "RX164"
266 280
267 config SECONDARY_RESET_VECTOR !! 281 config ALPHA_SX164
268 bool "Secondary cores use alternative !! 282 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 <<
275 283
276 config FAST_SYSCALL_XTENSA !! 284 config ALPHA_SABLE
277 bool "Enable fast atomic syscalls" !! 285 bool "Sable"
278 default n !! 286 select HAVE_EISA
279 help 287 help
280 fast_syscall_xtensa is a syscall tha !! 288 Digital AlphaServer 2000 and 2100-based systems.
281 on UP kernel when processor has no s <<
282 289
283 This syscall is deprecated. It may h !! 290 config ALPHA_SHARK
284 invalid arguments. It is provided on !! 291 bool "Shark"
285 Only enable it if your userspace sof <<
286 292
287 If unsure, say N. !! 293 config ALPHA_TAKARA
288 !! 294 bool "Takara"
289 config FAST_SYSCALL_SPILL_REGISTERS <<
290 bool "Enable spill registers syscall" <<
291 default n <<
292 help 295 help
293 fast_syscall_spill_registers is a sy !! 296 Alpha 11164-based OEM single-board computer.
294 register windows of a calling usersp <<
295 297
296 This syscall is deprecated. It may h !! 298 config ALPHA_TITAN
297 invalid arguments. It is provided on !! 299 bool "Titan"
298 Only enable it if your userspace sof !! 300 help
299 !! 301 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
300 If unsure, say N. <<
301 302
302 choice !! 303 config ALPHA_WILDFIRE
303 prompt "Kernel ABI" !! 304 bool "Wildfire"
304 default KERNEL_ABI_DEFAULT <<
305 help 305 help
306 Select ABI for the kernel code. This !! 306 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. <<
331 307
332 endchoice 308 endchoice
333 309
334 config USER_ABI_CALL0 !! 310 # clear all implied options (don't want default values for those):
>> 311 # Most of these machines have ISA slots; not exactly sure which don't,
>> 312 # and this doesn't activate hordes of code, so do it always.
>> 313 config ISA
335 bool 314 bool
336 !! 315 default y
337 choice <<
338 prompt "Userspace ABI" <<
339 default USER_ABI_DEFAULT <<
340 help 316 help
341 Select supported userspace ABI. !! 317 Find out whether you have ISA slots on your motherboard. ISA is the
>> 318 name of a bus system, i.e. the way the CPU talks to the other stuff
>> 319 inside your box. Other bus systems are PCI, EISA, MicroChannel
>> 320 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
>> 321 newer boards don't support it. If you have ISA, say Y, otherwise N.
342 322
343 If unsure, choose the default ABI. !! 323 config ISA_DMA_API
>> 324 bool
>> 325 default y
344 326
345 config USER_ABI_DEFAULT !! 327 config ALPHA_NONAME
346 bool "Default ABI only" !! 328 bool
>> 329 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
>> 330 default y
347 help 331 help
348 Assume default userspace ABI. For XE !! 332 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
349 call0 ABI binaries may be run on suc !! 333 UDB). This design was produced by Digital's Technical OEM (TOEM)
350 will not work correctly for them. !! 334 group. It uses the 21066 processor running at 166MHz or 233MHz. It
>> 335 is a baby-AT size, and runs from a standard PC power supply. It has
>> 336 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
>> 337 2 versions, with either PS/2 or large DIN connectors for the
>> 338 keyboard.
351 339
352 config USER_ABI_CALL0_ONLY !! 340 config ALPHA_EV4
353 bool "Call0 ABI only" !! 341 bool
354 select USER_ABI_CALL0 !! 342 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 !! 343 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 <<
359 344
360 Choose this option if you're plannin !! 345 config ALPHA_LCA
361 built with call0 ABI. !! 346 bool
>> 347 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
>> 348 default y
362 349
363 config USER_ABI_CALL0_PROBE !! 350 config ALPHA_APECS
364 bool "Support both windowed and call0 !! 351 bool
365 select USER_ABI_CALL0 !! 352 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
>> 353 default y
>> 354
>> 355 config ALPHA_EB64P
>> 356 bool
>> 357 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
>> 358 default y
366 help 359 help
367 Select this option to support both w !! 360 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
368 ABIs. When enabled all processes are !! 361 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
369 and a fast user exception handler fo !! 362 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
370 used to turn on PS.WOE bit on the fi !! 363 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
371 the userspace. !! 364 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
>> 365 Runs from standard PC power supply.
>> 366
>> 367 config ALPHA_EV5
>> 368 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
>> 369 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
372 370
373 This option should be enabled for th !! 371 config ALPHA_EV4
374 both call0 and windowed ABIs in user !! 372 bool
>> 373 default y if ALPHA_LYNX && !ALPHA_EV5
375 374
376 Note that Xtensa ISA does not guaran !! 375 config ALPHA_CIA
377 raise an illegal instruction excepti !! 376 bool
378 PS.WOE is disabled, check whether th !! 377 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
>> 378 default y
379 379
380 endchoice !! 380 config ALPHA_EV56
>> 381 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
>> 382 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
381 383
382 endmenu !! 384 config ALPHA_EV56
>> 385 prompt "EV56 CPU (speed >= 333MHz)?"
>> 386 depends on ALPHA_NORITAKE || ALPHA_PRIMO
383 387
384 config XTENSA_CALIBRATE_CCOUNT !! 388 config ALPHA_EV56
385 def_bool n !! 389 prompt "EV56 CPU (speed >= 400MHz)?"
>> 390 depends on ALPHA_RAWHIDE
>> 391
>> 392 config ALPHA_PRIMO
>> 393 bool "EV5 CPU daughtercard (model 5/xxx)?"
>> 394 depends on ALPHA_NORITAKE || ALPHA_MIKASA
386 help 395 help
387 On some platforms (XT2000, for examp !! 396 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 <<
390 397
391 config SERIAL_CONSOLE !! 398 config ALPHA_GAMMA
392 def_bool n !! 399 bool "EV5 CPU(s) (model 5/xxx)?"
>> 400 depends on ALPHA_SABLE
>> 401 help
>> 402 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
393 403
394 config PLATFORM_HAVE_XIP !! 404 config ALPHA_GAMMA
395 def_bool n !! 405 bool
>> 406 depends on ALPHA_LYNX
>> 407 default y
396 408
397 menu "Platform options" !! 409 config ALPHA_T2
>> 410 bool
>> 411 depends on ALPHA_SABLE || ALPHA_LYNX
>> 412 default y
398 413
399 choice !! 414 config ALPHA_PYXIS
400 prompt "Xtensa System Type" !! 415 bool
401 default XTENSA_PLATFORM_ISS !! 416 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
>> 417 default y
402 418
403 config XTENSA_PLATFORM_ISS !! 419 config ALPHA_EV6
404 bool "ISS" !! 420 bool
405 select XTENSA_CALIBRATE_CCOUNT !! 421 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
406 select SERIAL_CONSOLE !! 422 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 <<
426 423
427 endchoice !! 424 config ALPHA_TSUNAMI
>> 425 bool
>> 426 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
>> 427 default y
428 428
429 config PLATFORM_NR_IRQS !! 429 config ALPHA_EV67
430 int !! 430 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
431 default 3 if XTENSA_PLATFORM_XT2000 !! 431 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
432 default 0 !! 432 help
>> 433 Is this a machine based on the EV67 core? If in doubt, select N here
>> 434 and the machine will be treated as an EV6.
433 435
434 config XTENSA_CPU_CLOCK !! 436 config ALPHA_MCPCIA
435 int "CPU clock rate [MHz]" !! 437 bool
436 depends on !XTENSA_CALIBRATE_CCOUNT !! 438 depends on ALPHA_RAWHIDE
437 default 16 !! 439 default y
438 440
439 config GENERIC_CALIBRATE_DELAY !! 441 config ALPHA_POLARIS
440 bool "Auto calibration of the BogoMIPS !! 442 bool
441 help !! 443 depends on ALPHA_RX164
442 The BogoMIPS value can easily be der !! 444 default y
443 445
444 config CMDLINE_BOOL !! 446 config ALPHA_IRONGATE
445 bool "Default bootloader kernel argume !! 447 bool
>> 448 depends on ALPHA_NAUTILUS
>> 449 default y
446 450
447 config CMDLINE !! 451 config GENERIC_HWEIGHT
448 string "Initial kernel command string" !! 452 bool
449 depends on CMDLINE_BOOL !! 453 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 <<
457 454
458 config USE_OF !! 455 config ALPHA_AVANTI
459 bool "Flattened Device Tree support" !! 456 bool
460 select OF !! 457 depends on ALPHA_XL || ALPHA_AVANTI_CH
461 select OF_EARLY_FLATTREE !! 458 default y
462 help 459 help
463 Include support for flattened device !! 460 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
>> 461 Alphas. Info at
>> 462 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
464 463
465 config BUILTIN_DTB_SOURCE !! 464 config ALPHA_BROKEN_IRQ_MASK
466 string "DTB to build into the kernel i !! 465 bool
467 depends on OF !! 466 depends on ALPHA_GENERIC || ALPHA_PC164
>> 467 default y
468 468
469 config PARSE_BOOTPARAM !! 469 config VGA_HOSE
470 bool "Parse bootparam block" !! 470 bool
>> 471 depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI)
471 default y 472 default y
472 help 473 help
473 Parse parameters passed to the kerne !! 474 Support VGA on an arbitrary hose; needed for several platforms
474 be disabled if the kernel is known t !! 475 which always have multiple hoses, and whose consoles support it.
475 476
476 If unsure, say Y. <<
477 477
478 choice !! 478 config ALPHA_QEMU
479 prompt "Semihosting interface" !! 479 bool "Run under QEMU emulation"
480 default XTENSA_SIMCALL_ISS !! 480 depends on !ALPHA_GENERIC
481 depends on XTENSA_PLATFORM_ISS <<
482 help 481 help
483 Choose semihosting interface that wi !! 482 Assume the presence of special features supported by QEMU PALcode
484 block device and networking. !! 483 that reduce the overhead of system emulation.
485 484
486 config XTENSA_SIMCALL_ISS !! 485 Generic kernels will auto-detect QEMU. But when building a
487 bool "simcall" !! 486 system-specific kernel, the assumption is that we want to
488 help !! 487 eliminate as many runtime tests as possible.
489 Use simcall instruction. simcall is <<
490 it does nothing on hardware. <<
491 488
492 config XTENSA_SIMCALL_GDBIO !! 489 If unsure, say N.
493 bool "GDBIO" <<
494 help <<
495 Use break instruction. It is availab <<
496 is attached to it via JTAG. <<
497 490
498 endchoice <<
499 491
500 config BLK_DEV_SIMDISK !! 492 config ALPHA_SRM
501 tristate "Host file-based simulated bl !! 493 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 !! 494 depends on TTY
503 depends on XTENSA_PLATFORM_ISS && BLOC !! 495 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 !! 496 help
505 Create block devices that map to fil !! 497 There are two different types of booting firmware on Alphas: SRM,
506 Device binding to host file may be c !! 498 which is command line driven, and ARC, which uses menus and arrow
507 interface provided the device is not !! 499 keys. Details about the Linux/Alpha booting process are contained in
508 !! 500 the Linux/Alpha FAQ, accessible on the WWW from
509 config BLK_DEV_SIMDISK_COUNT !! 501 <http://www.alphalinux.org/>.
510 int "Number of host file-based simulat !! 502
511 range 1 10 !! 503 The usual way to load Linux on an Alpha machine is to use MILO
512 depends on BLK_DEV_SIMDISK !! 504 (a bootloader that lets you pass command line parameters to the
513 default 2 !! 505 kernel just like lilo does for the x86 architecture) which can be
514 help !! 506 loaded either from ARC or can be installed directly as a permanent
515 This is the default minimal number o !! 507 firmware replacement from floppy (which requires changing a certain
516 Kernel/module parameter 'simdisk_cou !! 508 jumper on the motherboard). If you want to do either of these, say N
517 value at runtime. More file names (b !! 509 here. If MILO doesn't work on your system (true for Jensen
518 specified as parameters, simdisk_cou !! 510 motherboards), you can bypass it altogether and boot Linux directly
519 !! 511 from an SRM console; say Y here in order to do that. Note that you
520 config SIMDISK0_FILENAME !! 512 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. <<
544 513
545 If unsure, say N. 514 If unsure, say N.
546 515
547 config XTFPGA_LCD_BASE_ADDR !! 516 config ARCH_MAY_HAVE_PC_FDC
548 hex "XTFPGA LCD base address" !! 517 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/ <<
616 518
617 If unsure, say N. !! 519 config SMP
>> 520 bool "Symmetric multi-processing support"
>> 521 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
>> 522 help
>> 523 This enables support for systems with more than one CPU. If you have
>> 524 a system with only one CPU, say N. If you have a system with more
>> 525 than one CPU, say Y.
>> 526
>> 527 If you say N here, the kernel will run on uni- and multiprocessor
>> 528 machines, but will use only one CPU of a multiprocessor machine. If
>> 529 you say Y here, the kernel will run on many, but not all,
>> 530 uniprocessor machines. On a uniprocessor machine, the kernel
>> 531 will run faster if you say N here.
618 532
619 config MEMMAP_CACHEATTR !! 533 See also the SMP-HOWTO available at
620 hex "Cache attributes for the memory a !! 534 <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. <<
682 535
683 If unsure, leave the default value h !! 536 If you don't know what to do here, say N.
684 537
685 choice !! 538 config NR_CPUS
686 prompt "Relocatable vectors location" !! 539 int "Maximum number of CPUs (2-32)"
687 default XTENSA_VECTORS_IN_TEXT !! 540 range 2 32
>> 541 depends on SMP
>> 542 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
>> 543 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
688 help 544 help
689 Choose whether relocatable vectors a !! 545 MARVEL support can handle a maximum of 32 CPUs, all the others
690 or placed separately at runtime. Thi !! 546 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 <<
712 547
713 config VECTORS_ADDR !! 548 config ARCH_SPARSEMEM_ENABLE
714 hex "Kernel vectors virtual address" !! 549 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 550 help
738 This is the base address used for bo !! 551 Say Y to support efficient handling of discontiguous physical memory,
739 in noMMU configurations. !! 552 for systems that have huge holes in the physical address space.
>> 553
>> 554 config ALPHA_WTINT
>> 555 bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC
>> 556 default y if ALPHA_QEMU
>> 557 default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA)
>> 558 default n if !ALPHA_SRM && !ALPHA_GENERIC
>> 559 default y if SMP
>> 560 help
>> 561 The Wait for Interrupt (WTINT) PALcall attempts to place the CPU
>> 562 to sleep until the next interrupt. This may reduce the power
>> 563 consumed, and the heat produced by the computer. However, it has
>> 564 the side effect of making the cycle counter unreliable as a timing
>> 565 device across the sleep.
740 566
741 If unsure, leave the default value h !! 567 For emulation under QEMU, definitely say Y here, as we have other
>> 568 mechanisms for measuring time than the cycle counter.
742 569
743 choice !! 570 For EV4 (but not LCA), EV5 and EV56 systems, or for systems running
744 prompt "KSEG layout" !! 571 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. <<
771 572
772 endchoice !! 573 For SMP systems we cannot use the cycle counter for timing anyway,
>> 574 so you might as well say Y here.
773 575
774 config HIGHMEM !! 576 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 <<
804 577
805 Don't change if unsure. !! 578 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
>> 579 config ALPHA_LARGE_VMALLOC
>> 580 bool
>> 581 help
>> 582 Process creation and other aspects of virtual memory management can
>> 583 be streamlined if we restrict the kernel to one PGD for all vmalloc
>> 584 allocations. This equates to about 8GB.
>> 585
>> 586 Under normal circumstances, this is so far and above what is needed
>> 587 as to be laughable. However, there are certain applications (such
>> 588 as benchmark-grade in-kernel web serving) that can make use of as
>> 589 much vmalloc space as is available.
>> 590
>> 591 Say N unless you know you need gobs and gobs of vmalloc space.
>> 592
>> 593 config VERBOSE_MCHECK
>> 594 bool "Verbose Machine Checks"
>> 595
>> 596 config VERBOSE_MCHECK_ON
>> 597 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
>> 598 depends on VERBOSE_MCHECK
>> 599 default 1
>> 600 help
>> 601 This option allows the default printing mode to be set, and then
>> 602 possibly overridden by a boot command argument.
>> 603
>> 604 For example, if one wanted the option of printing verbose
>> 605 machine checks, but wanted the default to be as if verbose
>> 606 machine check printing was turned off, then one would choose
>> 607 the printing mode to be 0. Then, upon reboot, one could add
>> 608 the boot command line "verbose_mcheck=1" to get the normal
>> 609 verbose machine check printing, or "verbose_mcheck=2" to get
>> 610 the maximum information available.
806 611
807 endmenu !! 612 Take the default (1) unless you want more control or more info.
808 613
809 menu "Power management options" !! 614 choice
>> 615 prompt "Timer interrupt frequency (HZ)?"
>> 616 default HZ_128 if ALPHA_QEMU
>> 617 default HZ_1200 if ALPHA_RAWHIDE
>> 618 default HZ_1024
>> 619 help
>> 620 The frequency at which timer interrupts occur. A high frequency
>> 621 minimizes latency, whereas a low frequency minimizes overhead of
>> 622 process accounting. The later effect is especially significant
>> 623 when being run under QEMU.
>> 624
>> 625 Note that some Alpha hardware cannot change the interrupt frequency
>> 626 of the timer. If unsure, say 1024 (or 1200 for Rawhide).
>> 627
>> 628 config HZ_32
>> 629 bool "32 Hz"
>> 630 config HZ_64
>> 631 bool "64 Hz"
>> 632 config HZ_128
>> 633 bool "128 Hz"
>> 634 config HZ_256
>> 635 bool "256 Hz"
>> 636 config HZ_1024
>> 637 bool "1024 Hz"
>> 638 config HZ_1200
>> 639 bool "1200 Hz"
>> 640 endchoice
810 641
811 config ARCH_HIBERNATION_POSSIBLE !! 642 config HZ
812 def_bool y !! 643 int
>> 644 default 32 if HZ_32
>> 645 default 64 if HZ_64
>> 646 default 128 if HZ_128
>> 647 default 256 if HZ_256
>> 648 default 1200 if HZ_1200
>> 649 default 1024
>> 650
>> 651 config SRM_ENV
>> 652 tristate "SRM environment through procfs"
>> 653 depends on PROC_FS
>> 654 help
>> 655 If you enable this option, a subdirectory inside /proc called
>> 656 /proc/srm_environment will give you access to the all important
>> 657 SRM environment variables (those which have a name) and also
>> 658 to all others (by their internal number).
>> 659
>> 660 SRM is something like a BIOS for Alpha machines. There are some
>> 661 other such BIOSes, like AlphaBIOS, which this driver cannot
>> 662 support (hey, that's not SRM!).
>> 663
>> 664 Despite the fact that this driver doesn't work on all Alphas (but
>> 665 only on those which have SRM as their firmware), it's save to
>> 666 build it even if your particular machine doesn't know about SRM
>> 667 (or if you intend to compile a generic kernel). It will simply
>> 668 not create those subdirectory in /proc (and give you some warning,
>> 669 of course).
813 670
814 source "kernel/power/Kconfig" !! 671 This driver is also available as a module and will be called
>> 672 srm_env then.
815 673
816 endmenu 674 endmenu
>> 675
>> 676 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
>> 677 # but we also need it if VGA_HOSE is set
>> 678 config DUMMY_CONSOLE
>> 679 bool
>> 680 depends on VGA_HOSE
>> 681 default y
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