1 # SPDX-License-Identifier: GPL-2.0 1 # SPDX-License-Identifier: GPL-2.0
2 config PARISC !! 2 config ALPHA
3 def_bool y !! 3 bool
4 select ALTERNATE_USER_ADDRESS_SPACE !! 4 default y
5 select ARCH_32BIT_OFF_T if !64BIT !! 5 select ARCH_32BIT_USTAT_F_TINODE
>> 6 select ARCH_HAS_CURRENT_STACK_POINTER
>> 7 select ARCH_HAS_DMA_OPS if PCI
6 select ARCH_MIGHT_HAVE_PC_PARPORT 8 select ARCH_MIGHT_HAVE_PC_PARPORT
7 select HAVE_FUNCTION_TRACER !! 9 select ARCH_MIGHT_HAVE_PC_SERIO
8 select HAVE_FUNCTION_GRAPH_TRACER !! 10 select ARCH_NO_PREEMPT
9 select HAVE_SYSCALL_TRACEPOINTS <<
10 select ARCH_WANT_FRAME_POINTERS <<
11 select ARCH_HAS_CPU_CACHE_ALIASING <<
12 select ARCH_HAS_DMA_ALLOC if PA11 <<
13 select ARCH_HAS_DMA_OPS <<
14 select ARCH_HAS_ELF_RANDOMIZE <<
15 select ARCH_HAS_STRICT_KERNEL_RWX <<
16 select ARCH_HAS_STRICT_MODULE_RWX <<
17 select ARCH_HAS_UBSAN <<
18 select ARCH_HAS_PTE_SPECIAL <<
19 select ARCH_NO_SG_CHAIN 11 select ARCH_NO_SG_CHAIN
20 select ARCH_SPLIT_ARG64 if !64BIT !! 12 select ARCH_USE_CMPXCHG_LOCKREF
21 select ARCH_SUPPORTS_HUGETLBFS if PA20 !! 13 select FORCE_PCI
22 select ARCH_SUPPORTS_MEMORY_FAILURE !! 14 select PCI_DOMAINS if PCI
23 select ARCH_STACKWALK !! 15 select PCI_SYSCALL if PCI
24 select ARCH_HAS_CACHE_LINE_SIZE !! 16 select HAVE_ASM_MODVERSIONS
25 select ARCH_HAS_DEBUG_VM_PGTABLE !! 17 select HAVE_PAGE_SIZE_8KB
26 select HAVE_RELIABLE_STACKTRACE !! 18 select HAVE_PCSPKR_PLATFORM
27 select RTC_CLASS <<
28 select RTC_DRV_GENERIC <<
29 select INIT_ALL_POSSIBLE <<
30 select BUG <<
31 select HAVE_KERNEL_UNCOMPRESSED <<
32 select HAVE_PCI <<
33 select HAVE_PERF_EVENTS 19 select HAVE_PERF_EVENTS
34 select HAVE_KERNEL_BZIP2 !! 20 select NEED_DMA_MAP_STATE
35 select HAVE_KERNEL_GZIP !! 21 select NEED_SG_DMA_LENGTH
36 select HAVE_KERNEL_LZ4 <<
37 select HAVE_KERNEL_LZMA <<
38 select HAVE_KERNEL_LZO <<
39 select HAVE_KERNEL_XZ <<
40 select GENERIC_ATOMIC64 if !64BIT <<
41 select GENERIC_IRQ_PROBE 22 select GENERIC_IRQ_PROBE
42 select GENERIC_PCI_IOMAP 23 select GENERIC_PCI_IOMAP
43 select GENERIC_IOREMAP !! 24 select AUTO_IRQ_AFFINITY if SMP
>> 25 select GENERIC_IRQ_SHOW
>> 26 select ARCH_WANT_IPC_PARSE_VERSION
44 select ARCH_HAVE_NMI_SAFE_CMPXCHG 27 select ARCH_HAVE_NMI_SAFE_CMPXCHG
>> 28 select AUDIT_ARCH
>> 29 select GENERIC_CPU_VULNERABILITIES
45 select GENERIC_SMP_IDLE_THREAD 30 select GENERIC_SMP_IDLE_THREAD
46 select GENERIC_ARCH_TOPOLOGY if SMP !! 31 select HAS_IOPORT
47 select GENERIC_CPU_DEVICES if !SMP !! 32 select HAVE_ARCH_AUDITSYSCALL
48 select GENERIC_LIB_DEVMEM_IS_ALLOWED <<
49 select SYSCTL_ARCH_UNALIGN_ALLOW <<
50 select SYSCTL_ARCH_UNALIGN_NO_WARN <<
51 select SYSCTL_EXCEPTION_TRACE <<
52 select HAVE_MOD_ARCH_SPECIFIC 33 select HAVE_MOD_ARCH_SPECIFIC
>> 34 select LOCK_MM_AND_FIND_VMA
53 select MODULES_USE_ELF_RELA 35 select MODULES_USE_ELF_RELA
54 select CLONE_BACKWARDS !! 36 select ODD_RT_SIGACTION
55 select TTY # Needed for pdc_cons.c !! 37 select OLD_SIGSUSPEND
56 select HAS_IOPORT if PCI || EISA !! 38 select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67
57 select HAVE_DEBUG_STACKOVERFLOW !! 39 select MMU_GATHER_NO_RANGE
58 select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_ !! 40 select SPARSEMEM_EXTREME if SPARSEMEM
59 select HAVE_ARCH_MMAP_RND_COMPAT_BITS !! 41 select ZONE_DMA
60 select HAVE_ARCH_MMAP_RND_BITS !! 42 help
61 select HAVE_ARCH_AUDITSYSCALL !! 43 The Alpha is a 64-bit general-purpose processor designed and
62 select HAVE_ARCH_HASH !! 44 marketed by the Digital Equipment Corporation of blessed memory,
63 select HAVE_ARCH_JUMP_LABEL !! 45 now Hewlett-Packard. The Alpha Linux project has a home page at
64 select HAVE_ARCH_JUMP_LABEL_RELATIVE !! 46 <http://www.alphalinux.org/>.
65 select HAVE_ARCH_KFENCE <<
66 select HAVE_ARCH_SECCOMP_FILTER <<
67 select HAVE_ARCH_TRACEHOOK <<
68 select HAVE_EBPF_JIT <<
69 select ARCH_WANT_DEFAULT_BPF_JIT <<
70 select HAVE_REGS_AND_STACK_ACCESS_API <<
71 select HOTPLUG_CORE_SYNC_DEAD if HOTPL <<
72 select GENERIC_SCHED_CLOCK <<
73 select GENERIC_IRQ_MIGRATION if SMP <<
74 select HAVE_UNSTABLE_SCHED_CLOCK if SM <<
75 select GENERIC_CLOCKEVENTS <<
76 select CPU_NO_EFFICIENT_FFS <<
77 select THREAD_INFO_IN_TASK <<
78 select NEED_DMA_MAP_STATE <<
79 select NEED_SG_DMA_LENGTH <<
80 select HAVE_ARCH_KGDB <<
81 select HAVE_KPROBES <<
82 select HAVE_KRETPROBES <<
83 select HAVE_DYNAMIC_FTRACE if $(cc-opt <<
84 select HAVE_FTRACE_MCOUNT_RECORD if HA <<
85 select FTRACE_MCOUNT_USE_PATCHABLE_FUN <<
86 select HAVE_KPROBES_ON_FTRACE <<
87 select HAVE_DYNAMIC_FTRACE_WITH_REGS <<
88 select HAVE_SOFTIRQ_ON_OWN_STACK if IR <<
89 select TRACE_IRQFLAGS_SUPPORT <<
90 select HAVE_FUNCTION_DESCRIPTORS if 64 <<
91 select PCI_MSI_ARCH_FALLBACKS if PCI_M <<
92 <<
93 help <<
94 The PA-RISC microprocessor is design <<
95 in many of their workstations & serv <<
96 and later HP3000 series). The PA-RI <<
97 at <https://parisc.wiki.kernel.org>. <<
98 47
99 config CPU_BIG_ENDIAN !! 48 config 64BIT
100 def_bool y 49 def_bool y
101 50
102 config MMU 51 config MMU
103 def_bool y <<
104 <<
105 config STACK_GROWSUP <<
106 def_bool y <<
107 <<
108 config GENERIC_LOCKBREAK <<
109 bool 52 bool
110 default y 53 default y
111 depends on SMP && PREEMPTION <<
112 54
113 config ARCH_HAS_ILOG2_U32 55 config ARCH_HAS_ILOG2_U32
114 bool 56 bool
115 default n 57 default n
116 58
117 config ARCH_HAS_ILOG2_U64 59 config ARCH_HAS_ILOG2_U64
118 bool 60 bool
119 default n 61 default n
120 62
121 config GENERIC_BUG !! 63 config GENERIC_CALIBRATE_DELAY
122 def_bool y <<
123 depends on BUG <<
124 select GENERIC_BUG_RELATIVE_POINTERS i <<
125 <<
126 config GENERIC_BUG_RELATIVE_POINTERS <<
127 bool <<
128 <<
129 config GENERIC_HWEIGHT <<
130 bool 64 bool
131 default y 65 default y
132 66
133 config GENERIC_CALIBRATE_DELAY !! 67 config GENERIC_ISA_DMA
134 bool 68 bool
135 default y 69 default y
136 70
137 config TIME_LOW_RES !! 71 config PGTABLE_LEVELS
>> 72 int
>> 73 default 3
>> 74
>> 75 config AUDIT_ARCH
138 bool 76 bool
139 depends on SMP <<
140 default y <<
141 77
142 config ARCH_MMAP_RND_BITS_MIN !! 78 menu "System setup"
143 default 18 if 64BIT <<
144 default 8 <<
145 79
146 config ARCH_MMAP_RND_COMPAT_BITS_MIN !! 80 choice
147 default 8 !! 81 prompt "Alpha system type"
>> 82 default ALPHA_GENERIC
>> 83 help
>> 84 This is the system type of your hardware. A "generic" kernel will
>> 85 run on any supported Alpha system. However, if you configure a
>> 86 kernel for your specific system, it will be faster and smaller.
148 87
149 config ARCH_MMAP_RND_BITS_MAX !! 88 To find out what type of Alpha system you have, you may want to
150 default 18 if 64BIT !! 89 check out the Linux/Alpha FAQ, accessible on the WWW from
151 default 13 !! 90 <http://www.alphalinux.org/>. In summary:
152 91
153 config ARCH_MMAP_RND_COMPAT_BITS_MAX !! 92 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
154 default 13 !! 93 DP264 DP264 / DS20 / ES40 / DS10 / DS10L
>> 94 LX164 AlphaPC164-LX
>> 95 Miata Personal Workstation 433/500/600 a/au
>> 96 Marvel AlphaServer ES47 / ES80 / GS1280
>> 97 Mikasa AS 1000
>> 98 Noritake AS 1000A, AS 600A, AS 800
>> 99 PC164 AlphaPC164
>> 100 Rawhide AS 1200, AS 4000, AS 4100
>> 101 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
>> 102 SX164 AlphaPC164-SX
>> 103 Sable AS 2000, AS 2100
>> 104 Shark DS 20L
>> 105 Takara Takara (OEM)
>> 106 Titan AlphaServer ES45 / DS25 / DS15
>> 107 Wildfire AlphaServer GS 40/80/160/320
155 108
156 # unless you want to implement ACPI on PA-RISC !! 109 If you don't know what to do, choose "generic".
157 config PM <<
158 bool <<
159 110
160 config STACKTRACE_SUPPORT !! 111 config ALPHA_GENERIC
161 def_bool y !! 112 bool "Generic"
>> 113 depends on TTY
>> 114 select HAVE_EISA
>> 115 help
>> 116 A generic kernel will run on all supported Alpha hardware.
162 117
163 config LOCKDEP_SUPPORT !! 118 config ALPHA_ALCOR
164 bool !! 119 bool "Alcor/Alpha-XLT"
165 default y !! 120 select HAVE_EISA
>> 121 help
>> 122 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
>> 123 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
>> 124 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
>> 125 controller (256-bit memory bus) and a PCI interface. It also does
>> 126 all the work required to support an external Bcache and to maintain
>> 127 memory coherence when a PCI device DMAs into (or out of) memory.
166 128
167 config ISA_DMA_API !! 129 config ALPHA_DP264
168 bool !! 130 bool "DP264"
>> 131 help
>> 132 Various 21264 systems with the tsunami core logic chipset.
>> 133 API Networks: 264DP, UP2000(+), CS20;
>> 134 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
169 135
170 config ARCH_MAY_HAVE_PC_FDC !! 136 config ALPHA_EIGER
171 bool !! 137 bool "Eiger"
172 depends on BROKEN !! 138 help
173 default y !! 139 Apparently an obscure OEM single-board computer based on the
>> 140 Typhoon/Tsunami chipset family. Information on it is scanty.
174 141
175 config PGTABLE_LEVELS !! 142 config ALPHA_LX164
176 int !! 143 bool "LX164"
177 default 3 if 64BIT && PARISC_PAGE_SIZE !! 144 help
178 default 2 !! 145 A technical overview of this board is available at
>> 146 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
179 147
180 menu "Processor type and features" !! 148 config ALPHA_MARVEL
>> 149 bool "Marvel"
>> 150 help
>> 151 AlphaServer ES47 / ES80 / GS1280 based on EV7.
181 152
182 choice !! 153 config ALPHA_MIATA
183 prompt "Processor type" !! 154 bool "Miata"
184 default PA7000 if "$(ARCH)" = "parisc" !! 155 select HAVE_EISA
>> 156 help
>> 157 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
>> 158 or 600au).
185 159
186 config PA7000 !! 160 config ALPHA_MIKASA
187 bool "PA7000/PA7100" if "$(ARCH)" = "p !! 161 bool "Mikasa"
188 help 162 help
189 This is the processor type of your C !! 163 AlphaServer 1000-based Alpha systems.
190 used for optimizing purposes. In or <<
191 that can run on all 32-bit PA CPUs ( <<
192 you can specify "PA7000" here. <<
193 164
194 Specifying "PA8000" here will allow !! 165 config ALPHA_NAUTILUS
195 which is required on some machines. !! 166 bool "Nautilus"
>> 167 help
>> 168 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
196 169
197 config PA7100LC !! 170 config ALPHA_NORITAKE
198 bool "PA7100LC" if "$(ARCH)" = "parisc !! 171 bool "Noritake"
>> 172 select HAVE_EISA
199 help 173 help
200 Select this option for the PCX-L pro !! 174 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
201 712, 715/64, 715/80, 715/100, 715/10 !! 175 systems.
202 D200, D210, D300, D310 and E-class !! 176
>> 177 config ALPHA_PC164
>> 178 bool "PC164"
203 179
204 config PA7200 !! 180 config ALPHA_RAWHIDE
205 bool "PA7200" if "$(ARCH)" = "parisc" !! 181 bool "Rawhide"
>> 182 select HAVE_EISA
206 help 183 help
207 Select this option for the PCX-T' pr !! 184 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
208 C100, C110, J100, J110, J210XC, D250 !! 185 See HOWTO at
209 K100, K200, K210, K220, K400, K410 a !! 186 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
210 187
211 config PA7300LC !! 188 config ALPHA_RUFFIAN
212 bool "PA7300LC" if "$(ARCH)" = "parisc !! 189 bool "Ruffian"
213 help 190 help
214 Select this option for the PCX-L2 pr !! 191 Samsung APC164UX. There is a page on known problems and workarounds
215 744, A180, B132L, B160L, B180L, C132 !! 192 at <http://www.alphalinux.org/faq/FAQ-11.html>.
216 D220, D230, D320 and D330. <<
217 193
218 config PA8X00 !! 194 config ALPHA_RX164
219 bool "PA8000 and up" !! 195 bool "RX164"
>> 196
>> 197 config ALPHA_SX164
>> 198 bool "SX164"
>> 199
>> 200 config ALPHA_SABLE
>> 201 bool "Sable"
>> 202 select HAVE_EISA
220 help 203 help
221 Select this option for PCX-U to PCX- !! 204 Digital AlphaServer 2000 and 2100-based systems.
>> 205
>> 206 config ALPHA_SHARK
>> 207 bool "Shark"
>> 208
>> 209 config ALPHA_TAKARA
>> 210 bool "Takara"
>> 211 help
>> 212 Alpha 11164-based OEM single-board computer.
>> 213
>> 214 config ALPHA_TITAN
>> 215 bool "Titan"
>> 216 help
>> 217 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
>> 218
>> 219 config ALPHA_WILDFIRE
>> 220 bool "Wildfire"
>> 221 help
>> 222 AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
222 223
223 endchoice 224 endchoice
224 225
225 # Define implied options from the CPU selectio !! 226 # clear all implied options (don't want default values for those):
>> 227 # Most of these machines have ISA slots; not exactly sure which don't,
>> 228 # and this doesn't activate hordes of code, so do it always.
>> 229 config ISA
>> 230 bool
>> 231 default y
>> 232 help
>> 233 Find out whether you have ISA slots on your motherboard. ISA is the
>> 234 name of a bus system, i.e. the way the CPU talks to the other stuff
>> 235 inside your box. Other bus systems are PCI, EISA, MicroChannel
>> 236 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
>> 237 newer boards don't support it. If you have ISA, say Y, otherwise N.
226 238
227 config PA20 !! 239 config ISA_DMA_API
228 def_bool y !! 240 bool
229 depends on PA8X00 !! 241 default y
230 242
231 config PA11 !! 243 config ALPHA_CIA
232 def_bool y !! 244 bool
233 depends on PA7000 || PA7100LC || PA720 !! 245 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_NORITAKE || ALPHA_MIKASA || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_ALCOR
234 select ARCH_HAS_SYNC_DMA_FOR_CPU !! 246 default y
235 select ARCH_HAS_SYNC_DMA_FOR_DEVICE <<
236 247
237 config PREFETCH !! 248 config ALPHA_EV56
238 def_bool y !! 249 bool
239 depends on PA8X00 || PA7200 !! 250 default y if ALPHA_ALCOR || ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_NORITAKE || ALPHA_MIKASA || ALPHA_RAWHIDE || ALPHA_SABLE
240 251
241 config PARISC_HUGE_KERNEL !! 252 config ALPHA_T2
242 def_bool y if !MODULES || UBSAN || FTR !! 253 bool
>> 254 depends on ALPHA_SABLE
>> 255 default y
243 256
244 config MLONGCALLS !! 257 config ALPHA_PYXIS
245 bool "Enable the -mlong-calls compiler !! 258 bool
246 depends on PA8X00 !! 259 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
247 default PARISC_HUGE_KERNEL !! 260 default y
248 help <<
249 If you configure the kernel to inclu <<
250 as modules, the kernel executable ma <<
251 linker will not be able to resolve s <<
252 your vmlinux kernel. In that case en <<
253 to overcome this limit by using the <<
254 <<
255 Usually you want to say N here, unle <<
256 a kernel which includes all necessar <<
257 be used for TFTP booting without the <<
258 261
259 Enabling this option will probably s !! 262 config ALPHA_EV6
>> 263 bool
>> 264 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
>> 265 default y
260 266
261 config 64BIT !! 267 config ALPHA_TSUNAMI
262 bool "64-bit kernel" if "$(ARCH)" = "p !! 268 bool
263 depends on PA8X00 !! 269 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
264 default "$(ARCH)" = "parisc64" !! 270 default y
265 help <<
266 Enable this if you want to support 6 <<
267 <<
268 At the moment, only people willing t <<
269 or having a 64bit-only capable PA-RI <<
270 <<
271 Since there is no 64bit userland on <<
272 enable this option otherwise. The 64 <<
273 and slower than the 32bit one. <<
274 271
275 choice !! 272 config ALPHA_EV67
276 prompt "Kernel page size" !! 273 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
277 default PARISC_PAGE_SIZE_4KB !! 274 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
>> 275 help
>> 276 Is this a machine based on the EV67 core? If in doubt, select N here
>> 277 and the machine will be treated as an EV6.
278 278
279 config PARISC_PAGE_SIZE_4KB !! 279 config ALPHA_MCPCIA
280 bool "4KB" !! 280 bool
281 select HAVE_PAGE_SIZE_4KB !! 281 depends on ALPHA_RAWHIDE
282 help !! 282 default y
283 This lets you select the page size o <<
284 performance, a page size of 16KB is <<
285 compatibility with 32bit application <<
286 selected (the vast majority of 32bit <<
287 with a larger page size). <<
288 <<
289 4KB For best 32bit co <<
290 16KB For best performa <<
291 64KB For best performa <<
292 <<
293 If you don't know what to do, choose <<
294 <<
295 config PARISC_PAGE_SIZE_16KB <<
296 bool "16KB" <<
297 select HAVE_PAGE_SIZE_16KB <<
298 depends on PA8X00 && BROKEN && !KFENCE <<
299 <<
300 config PARISC_PAGE_SIZE_64KB <<
301 bool "64KB" <<
302 select HAVE_PAGE_SIZE_64KB <<
303 depends on PA8X00 && BROKEN && !KFENCE <<
304 283
305 endchoice !! 284 config ALPHA_POLARIS
>> 285 bool
>> 286 depends on ALPHA_RX164
>> 287 default y
>> 288
>> 289 config ALPHA_IRONGATE
>> 290 bool
>> 291 depends on ALPHA_NAUTILUS
>> 292 default y
>> 293
>> 294 config GENERIC_HWEIGHT
>> 295 bool
>> 296 default y if !ALPHA_EV67
>> 297
>> 298 config ALPHA_BROKEN_IRQ_MASK
>> 299 bool
>> 300 depends on ALPHA_GENERIC || ALPHA_PC164
>> 301 default y
>> 302
>> 303 config VGA_HOSE
>> 304 bool
>> 305 depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI)
>> 306 default y
>> 307 help
>> 308 Support VGA on an arbitrary hose; needed for several platforms
>> 309 which always have multiple hoses, and whose consoles support it.
>> 310
>> 311
>> 312 config ALPHA_QEMU
>> 313 bool "Run under QEMU emulation"
>> 314 depends on !ALPHA_GENERIC
>> 315 help
>> 316 Assume the presence of special features supported by QEMU PALcode
>> 317 that reduce the overhead of system emulation.
>> 318
>> 319 Generic kernels will auto-detect QEMU. But when building a
>> 320 system-specific kernel, the assumption is that we want to
>> 321 eliminate as many runtime tests as possible.
>> 322
>> 323 If unsure, say N.
>> 324
>> 325
>> 326 config ALPHA_SRM
>> 327 bool "Use SRM as bootloader" if ALPHA_PC164 || ALPHA_TAKARA || ALPHA_ALCOR || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_NAUTILUS
>> 328 depends on TTY
>> 329 default y if ALPHA_MIKASA || ALPHA_SABLE || ALPHA_NORITAKE || ALPHA_DP264 || ALPHA_RAWHIDE || ALPHA_EIGER || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
>> 330 help
>> 331 There are two different types of booting firmware on Alphas: SRM,
>> 332 which is command line driven, and ARC, which uses menus and arrow
>> 333 keys. Details about the Linux/Alpha booting process are contained in
>> 334 the Linux/Alpha FAQ, accessible on the WWW from
>> 335 <http://www.alphalinux.org/>.
>> 336
>> 337 The usual way to load Linux on an Alpha machine is to use MILO
>> 338 (a bootloader that lets you pass command line parameters to the
>> 339 kernel just like lilo does for the x86 architecture) which can be
>> 340 loaded either from ARC or can be installed directly as a permanent
>> 341 firmware replacement from floppy (which requires changing a certain
>> 342 jumper on the motherboard). If you want to do either of these, say N
>> 343 here. If MILO doesn't work on your system (true for Jensen
>> 344 motherboards), you can bypass it altogether and boot Linux directly
>> 345 from an SRM console; say Y here in order to do that. Note that you
>> 346 won't be able to boot from an IDE disk using SRM.
>> 347
>> 348 If unsure, say N.
>> 349
>> 350 config ARCH_MAY_HAVE_PC_FDC
>> 351 def_bool y
306 352
307 config SMP 353 config SMP
308 bool "Symmetric multi-processing suppo 354 bool "Symmetric multi-processing support"
>> 355 depends on ALPHA_SABLE || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
309 help 356 help
310 This enables support for systems wit 357 This enables support for systems with more than one CPU. If you have
311 a system with only one CPU, say N. I 358 a system with only one CPU, say N. If you have a system with more
312 than one CPU, say Y. 359 than one CPU, say Y.
313 360
314 If you say N here, the kernel will r 361 If you say N here, the kernel will run on uni- and multiprocessor
315 machines, but will use only one CPU !! 362 machines, but will use only one CPU of a multiprocessor machine. If
316 On a uniprocessor machine, the kerne !! 363 you say Y here, the kernel will run on many, but not all,
>> 364 uniprocessor machines. On a uniprocessor machine, the kernel
>> 365 will run faster if you say N here.
317 366
318 See also <file:Documentation/admin-g !! 367 See also the SMP-HOWTO available at
319 available at <https://www.tldp.org/d !! 368 <https://www.tldp.org/docs.html#howto>.
320 369
321 If you don't know what to do here, s 370 If you don't know what to do here, say N.
322 371
323 config SCHED_MC !! 372 config NR_CPUS
324 bool "Multi-core scheduler support" !! 373 int "Maximum number of CPUs (2-32)"
325 depends on GENERIC_ARCH_TOPOLOGY && PA !! 374 range 2 32
>> 375 depends on SMP
>> 376 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
>> 377 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
326 help 378 help
327 Multi-core scheduler support improve !! 379 MARVEL support can handle a maximum of 32 CPUs, all the others
328 making when dealing with multi-core !! 380 with working support have a maximum of 4 CPUs.
329 increased overhead in some places. I <<
330 381
331 config IRQSTACKS !! 382 config ARCH_SPARSEMEM_ENABLE
332 bool "Use separate kernel stacks when !! 383 bool "Sparse Memory Support"
333 default y <<
334 help 384 help
335 If you say Y here the kernel will us !! 385 Say Y to support efficient handling of discontiguous physical memory,
336 for handling hard and soft interrupt !! 386 for systems that have huge holes in the physical address space.
337 overflowing the process kernel stack <<
338 387
339 config HOTPLUG_CPU !! 388 config ALPHA_WTINT
340 bool !! 389 bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC
>> 390 default y if ALPHA_QEMU
>> 391 default n if ALPHA_EV56
>> 392 default n if !ALPHA_SRM && !ALPHA_GENERIC
341 default y if SMP 393 default y if SMP
>> 394 help
>> 395 The Wait for Interrupt (WTINT) PALcall attempts to place the CPU
>> 396 to sleep until the next interrupt. This may reduce the power
>> 397 consumed, and the heat produced by the computer. However, it has
>> 398 the side effect of making the cycle counter unreliable as a timing
>> 399 device across the sleep.
342 400
343 config ARCH_SELECT_MEMORY_MODEL !! 401 For emulation under QEMU, definitely say Y here, as we have other
344 def_bool y !! 402 mechanisms for measuring time than the cycle counter.
345 depends on 64BIT <<
346 403
347 config ARCH_SPARSEMEM_ENABLE !! 404 For EV4 (but not LCA), EV5 and EV56 systems, or for systems running
348 def_bool y !! 405 MILO, sleep mode is not supported so you might as well say N here.
349 depends on 64BIT <<
350 406
351 config ARCH_FLATMEM_ENABLE !! 407 For SMP systems we cannot use the cycle counter for timing anyway,
352 def_bool y !! 408 so you might as well say Y here.
353 409
354 config ARCH_SPARSEMEM_DEFAULT !! 410 If unsure, say N.
355 def_bool y <<
356 depends on ARCH_SPARSEMEM_ENABLE <<
357 411
358 source "kernel/Kconfig.hz" !! 412 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
>> 413 config ALPHA_LARGE_VMALLOC
>> 414 bool
>> 415 help
>> 416 Process creation and other aspects of virtual memory management can
>> 417 be streamlined if we restrict the kernel to one PGD for all vmalloc
>> 418 allocations. This equates to about 8GB.
359 419
360 config COMPAT !! 420 Under normal circumstances, this is so far and above what is needed
361 def_bool y !! 421 as to be laughable. However, there are certain applications (such
362 depends on 64BIT !! 422 as benchmark-grade in-kernel web serving) that can make use of as
>> 423 much vmalloc space as is available.
363 424
364 config AUDIT_ARCH !! 425 Say N unless you know you need gobs and gobs of vmalloc space.
365 def_bool y <<
366 426
367 config NR_CPUS !! 427 config VERBOSE_MCHECK
368 int "Maximum number of CPUs (2-32)" !! 428 bool "Verbose Machine Checks"
369 range 2 32 <<
370 depends on SMP <<
371 default "8" if 64BIT <<
372 default "16" <<
373 429
374 endmenu !! 430 config VERBOSE_MCHECK_ON
>> 431 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
>> 432 depends on VERBOSE_MCHECK
>> 433 default 1
>> 434 help
>> 435 This option allows the default printing mode to be set, and then
>> 436 possibly overridden by a boot command argument.
375 437
376 config ARCH_SUPPORTS_KEXEC !! 438 For example, if one wanted the option of printing verbose
377 def_bool y !! 439 machine checks, but wanted the default to be as if verbose
>> 440 machine check printing was turned off, then one would choose
>> 441 the printing mode to be 0. Then, upon reboot, one could add
>> 442 the boot command line "verbose_mcheck=1" to get the normal
>> 443 verbose machine check printing, or "verbose_mcheck=2" to get
>> 444 the maximum information available.
378 445
379 config ARCH_SUPPORTS_KEXEC_FILE !! 446 Take the default (1) unless you want more control or more info.
380 def_bool y <<
381 447
382 config ARCH_SELECTS_KEXEC_FILE !! 448 choice
383 def_bool y !! 449 prompt "Timer interrupt frequency (HZ)?"
384 depends on KEXEC_FILE !! 450 default HZ_128 if ALPHA_QEMU
385 select KEXEC_ELF !! 451 default HZ_1200 if ALPHA_RAWHIDE
>> 452 default HZ_1024
>> 453 help
>> 454 The frequency at which timer interrupts occur. A high frequency
>> 455 minimizes latency, whereas a low frequency minimizes overhead of
>> 456 process accounting. The later effect is especially significant
>> 457 when being run under QEMU.
>> 458
>> 459 Note that some Alpha hardware cannot change the interrupt frequency
>> 460 of the timer. If unsure, say 1024 (or 1200 for Rawhide).
>> 461
>> 462 config HZ_32
>> 463 bool "32 Hz"
>> 464 config HZ_64
>> 465 bool "64 Hz"
>> 466 config HZ_128
>> 467 bool "128 Hz"
>> 468 config HZ_256
>> 469 bool "256 Hz"
>> 470 config HZ_1024
>> 471 bool "1024 Hz"
>> 472 config HZ_1200
>> 473 bool "1200 Hz"
>> 474 endchoice
>> 475
>> 476 config HZ
>> 477 int
>> 478 default 32 if HZ_32
>> 479 default 64 if HZ_64
>> 480 default 128 if HZ_128
>> 481 default 256 if HZ_256
>> 482 default 1200 if HZ_1200
>> 483 default 1024
>> 484
>> 485 config SRM_ENV
>> 486 tristate "SRM environment through procfs"
>> 487 depends on PROC_FS
>> 488 help
>> 489 If you enable this option, a subdirectory inside /proc called
>> 490 /proc/srm_environment will give you access to the all important
>> 491 SRM environment variables (those which have a name) and also
>> 492 to all others (by their internal number).
>> 493
>> 494 SRM is something like a BIOS for Alpha machines. There are some
>> 495 other such BIOSes, like AlphaBIOS, which this driver cannot
>> 496 support (hey, that's not SRM!).
>> 497
>> 498 Despite the fact that this driver doesn't work on all Alphas (but
>> 499 only on those which have SRM as their firmware), it's save to
>> 500 build it even if your particular machine doesn't know about SRM
>> 501 (or if you intend to compile a generic kernel). It will simply
>> 502 not create those subdirectory in /proc (and give you some warning,
>> 503 of course).
>> 504
>> 505 This driver is also available as a module and will be called
>> 506 srm_env then.
386 507
387 source "drivers/parisc/Kconfig" !! 508 endmenu
>> 509
>> 510 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
>> 511 # but we also need it if VGA_HOSE is set
>> 512 config DUMMY_CONSOLE
>> 513 bool
>> 514 depends on VGA_HOSE
>> 515 default y
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