1 # SPDX-License-Identifier: GPL-2.0-only !! 1 # SPDX-License-Identifier: GPL-2.0
2 config MICROBLAZE !! 2 config ALPHA
3 def_bool y !! 3 bool
4 select ARCH_32BIT_OFF_T !! 4 default y
5 select ARCH_NO_SWAP !! 5 select ARCH_32BIT_USTAT_F_TINODE
6 select ARCH_HAS_DMA_PREP_COHERENT !! 6 select ARCH_HAS_CURRENT_STACK_POINTER
7 select ARCH_HAS_GCOV_PROFILE_ALL !! 7 select ARCH_HAS_DMA_OPS if PCI
8 select ARCH_HAS_SYNC_DMA_FOR_CPU <<
9 select ARCH_HAS_SYNC_DMA_FOR_DEVICE <<
10 select ARCH_MIGHT_HAVE_PC_PARPORT 8 select ARCH_MIGHT_HAVE_PC_PARPORT
11 select ARCH_WANT_IPC_PARSE_VERSION !! 9 select ARCH_MIGHT_HAVE_PC_SERIO
12 select BUILDTIME_TABLE_SORT !! 10 select ARCH_NO_PREEMPT
13 select TIMER_OF !! 11 select ARCH_NO_SG_CHAIN
14 select CLONE_BACKWARDS3 !! 12 select ARCH_USE_CMPXCHG_LOCKREF
15 select COMMON_CLK !! 13 select FORCE_PCI
16 select DMA_DIRECT_REMAP !! 14 select PCI_DOMAINS if PCI
17 select GENERIC_ATOMIC64 !! 15 select PCI_SYSCALL if PCI
18 select GENERIC_CPU_DEVICES !! 16 select HAVE_ASM_MODVERSIONS
19 select GENERIC_IDLE_POLL_SETUP !! 17 select HAVE_PAGE_SIZE_8KB
>> 18 select HAVE_PCSPKR_PLATFORM
>> 19 select HAVE_PERF_EVENTS
>> 20 select NEED_DMA_MAP_STATE
>> 21 select NEED_SG_DMA_LENGTH
20 select GENERIC_IRQ_PROBE 22 select GENERIC_IRQ_PROBE
21 select GENERIC_IRQ_SHOW <<
22 select GENERIC_PCI_IOMAP 23 select GENERIC_PCI_IOMAP
23 select GENERIC_SCHED_CLOCK !! 24 select AUTO_IRQ_AFFINITY if SMP
24 select HAS_IOPORT if PCI !! 25 select GENERIC_IRQ_SHOW
25 select HAVE_ARCH_HASH !! 26 select ARCH_WANT_IPC_PARSE_VERSION
26 select HAVE_ARCH_KGDB !! 27 select ARCH_HAVE_NMI_SAFE_CMPXCHG
27 select HAVE_ARCH_SECCOMP !! 28 select AUDIT_ARCH
28 select HAVE_DEBUG_KMEMLEAK !! 29 select GENERIC_CPU_VULNERABILITIES
29 select HAVE_DMA_CONTIGUOUS !! 30 select GENERIC_SMP_IDLE_THREAD
30 select HAVE_DYNAMIC_FTRACE !! 31 select HAS_IOPORT
31 select HAVE_FTRACE_MCOUNT_RECORD !! 32 select HAVE_ARCH_AUDITSYSCALL
32 select HAVE_FUNCTION_GRAPH_TRACER !! 33 select HAVE_MOD_ARCH_SPECIFIC
33 select HAVE_FUNCTION_TRACER !! 34 select LOCK_MM_AND_FIND_VMA
34 select HAVE_PAGE_SIZE_4KB <<
35 select HAVE_PCI <<
36 select IRQ_DOMAIN <<
37 select XILINX_INTC <<
38 select MODULES_USE_ELF_RELA 35 select MODULES_USE_ELF_RELA
39 select OF !! 36 select ODD_RT_SIGACTION
40 select OF_EARLY_FLATTREE !! 37 select OLD_SIGSUSPEND
41 select PCI_DOMAINS_GENERIC if PCI !! 38 select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67
42 select PCI_SYSCALL if PCI <<
43 select CPU_NO_EFFICIENT_FFS <<
44 select MMU_GATHER_NO_RANGE 39 select MMU_GATHER_NO_RANGE
45 select SPARSE_IRQ !! 40 select SPARSEMEM_EXTREME if SPARSEMEM
46 select ZONE_DMA 41 select ZONE_DMA
47 select TRACE_IRQFLAGS_SUPPORT !! 42 help
48 select GENERIC_IRQ_MULTI_HANDLER !! 43 The Alpha is a 64-bit general-purpose processor designed and
>> 44 marketed by the Digital Equipment Corporation of blessed memory,
>> 45 now Hewlett-Packard. The Alpha Linux project has a home page at
>> 46 <http://www.alphalinux.org/>.
>> 47
>> 48 config 64BIT
>> 49 def_bool y
>> 50
>> 51 config MMU
>> 52 bool
>> 53 default y
>> 54
>> 55 config ARCH_HAS_ILOG2_U32
>> 56 bool
>> 57 default n
>> 58
>> 59 config ARCH_HAS_ILOG2_U64
>> 60 bool
>> 61 default n
>> 62
>> 63 config GENERIC_CALIBRATE_DELAY
>> 64 bool
>> 65 default y
>> 66
>> 67 config GENERIC_ISA_DMA
>> 68 bool
>> 69 default y
>> 70
>> 71 config PGTABLE_LEVELS
>> 72 int
>> 73 default 3
>> 74
>> 75 config AUDIT_ARCH
>> 76 bool
>> 77
>> 78 menu "System setup"
49 79
50 # Endianness selection <<
51 choice 80 choice
52 prompt "Endianness selection" !! 81 prompt "Alpha system type"
53 default CPU_LITTLE_ENDIAN !! 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.
>> 87
>> 88 To find out what type of Alpha system you have, you may want to
>> 89 check out the Linux/Alpha FAQ, accessible on the WWW from
>> 90 <http://www.alphalinux.org/>. In summary:
>> 91
>> 92 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
>> 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
>> 108
>> 109 If you don't know what to do, choose "generic".
>> 110
>> 111 config ALPHA_GENERIC
>> 112 bool "Generic"
>> 113 depends on TTY
>> 114 select HAVE_EISA
54 help 115 help
55 microblaze architectures can be conf !! 116 A generic kernel will run on all supported Alpha hardware.
56 big endian formats. Be sure to selec <<
57 117
58 config CPU_BIG_ENDIAN !! 118 config ALPHA_ALCOR
59 bool "Big endian" !! 119 bool "Alcor/Alpha-XLT"
>> 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.
60 128
61 config CPU_LITTLE_ENDIAN !! 129 config ALPHA_DP264
62 bool "Little endian" !! 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.
63 135
64 endchoice !! 136 config ALPHA_EIGER
>> 137 bool "Eiger"
>> 138 help
>> 139 Apparently an obscure OEM single-board computer based on the
>> 140 Typhoon/Tsunami chipset family. Information on it is scanty.
65 141
66 config ARCH_HAS_ILOG2_U32 !! 142 config ALPHA_LX164
67 def_bool n !! 143 bool "LX164"
>> 144 help
>> 145 A technical overview of this board is available at
>> 146 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
68 147
69 config ARCH_HAS_ILOG2_U64 !! 148 config ALPHA_MARVEL
70 def_bool n !! 149 bool "Marvel"
>> 150 help
>> 151 AlphaServer ES47 / ES80 / GS1280 based on EV7.
71 152
72 config GENERIC_HWEIGHT !! 153 config ALPHA_MIATA
73 def_bool y !! 154 bool "Miata"
>> 155 select HAVE_EISA
>> 156 help
>> 157 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
>> 158 or 600au).
74 159
75 config GENERIC_CALIBRATE_DELAY !! 160 config ALPHA_MIKASA
76 def_bool y !! 161 bool "Mikasa"
>> 162 help
>> 163 AlphaServer 1000-based Alpha systems.
77 164
78 config GENERIC_CSUM !! 165 config ALPHA_NAUTILUS
79 def_bool y !! 166 bool "Nautilus"
>> 167 help
>> 168 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
80 169
81 config STACKTRACE_SUPPORT !! 170 config ALPHA_NORITAKE
82 def_bool y !! 171 bool "Noritake"
>> 172 select HAVE_EISA
>> 173 help
>> 174 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
>> 175 systems.
83 176
84 config LOCKDEP_SUPPORT !! 177 config ALPHA_PC164
85 def_bool y !! 178 bool "PC164"
86 179
87 source "arch/microblaze/Kconfig.platform" !! 180 config ALPHA_RAWHIDE
>> 181 bool "Rawhide"
>> 182 select HAVE_EISA
>> 183 help
>> 184 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
>> 185 See HOWTO at
>> 186 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
88 187
89 menu "Processor type and features" !! 188 config ALPHA_RUFFIAN
>> 189 bool "Ruffian"
>> 190 help
>> 191 Samsung APC164UX. There is a page on known problems and workarounds
>> 192 at <http://www.alphalinux.org/faq/FAQ-11.html>.
90 193
91 source "kernel/Kconfig.hz" !! 194 config ALPHA_RX164
>> 195 bool "RX164"
92 196
93 config MMU !! 197 config ALPHA_SX164
94 def_bool y !! 198 bool "SX164"
95 199
96 comment "Boot options" !! 200 config ALPHA_SABLE
>> 201 bool "Sable"
>> 202 select HAVE_EISA
>> 203 help
>> 204 Digital AlphaServer 2000 and 2100-based systems.
97 205
98 config CMDLINE_BOOL !! 206 config ALPHA_SHARK
99 bool "Default bootloader kernel argume !! 207 bool "Shark"
100 208
101 config CMDLINE !! 209 config ALPHA_TAKARA
102 string "Default kernel command string" !! 210 bool "Takara"
103 depends on CMDLINE_BOOL <<
104 default "console=ttyUL0,115200" <<
105 help <<
106 On some architectures there is curre <<
107 to pass arguments to the kernel. For <<
108 supply some command-line options at <<
109 here. <<
110 <<
111 config CMDLINE_FORCE <<
112 bool "Force default kernel command str <<
113 depends on CMDLINE_BOOL <<
114 default n <<
115 help 211 help
116 Set this to have arguments from the !! 212 Alpha 11164-based OEM single-board computer.
117 override those passed by the boot lo <<
118 213
119 endmenu !! 214 config ALPHA_TITAN
>> 215 bool "Titan"
>> 216 help
>> 217 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
120 218
121 menu "Kernel features" !! 219 config ALPHA_WILDFIRE
>> 220 bool "Wildfire"
>> 221 help
>> 222 AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
122 223
123 config NR_CPUS !! 224 endchoice
124 int <<
125 default "1" <<
126 225
127 config ADVANCED_OPTIONS !! 226 # clear all implied options (don't want default values for those):
128 bool "Prompt for advanced kernel confi !! 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
129 help 232 help
130 This option will enable prompting fo !! 233 Find out whether you have ISA slots on your motherboard. ISA is the
131 configuration options. These option !! 234 name of a bus system, i.e. the way the CPU talks to the other stuff
132 work if they are set incorrectly, bu !! 235 inside your box. Other bus systems are PCI, EISA, MicroChannel
133 aspects of kernel memory management. !! 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.
>> 238
>> 239 config ISA_DMA_API
>> 240 bool
>> 241 default y
>> 242
>> 243 config ALPHA_CIA
>> 244 bool
>> 245 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_NORITAKE || ALPHA_MIKASA || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_ALCOR
>> 246 default y
>> 247
>> 248 config ALPHA_EV56
>> 249 bool
>> 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
>> 251
>> 252 config ALPHA_T2
>> 253 bool
>> 254 depends on ALPHA_SABLE
>> 255 default y
>> 256
>> 257 config ALPHA_PYXIS
>> 258 bool
>> 259 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
>> 260 default y
>> 261
>> 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
>> 266
>> 267 config ALPHA_TSUNAMI
>> 268 bool
>> 269 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
>> 270 default y
>> 271
>> 272 config ALPHA_EV67
>> 273 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
>> 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.
134 278
135 Unless you know what you are doing, !! 279 config ALPHA_MCPCIA
>> 280 bool
>> 281 depends on ALPHA_RAWHIDE
>> 282 default y
>> 283
>> 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
136 293
137 comment "Default settings for advanced configu !! 294 config GENERIC_HWEIGHT
138 depends on !ADVANCED_OPTIONS !! 295 bool
>> 296 default y if !ALPHA_EV67
139 297
140 config HIGHMEM !! 298 config ALPHA_BROKEN_IRQ_MASK
141 bool "High memory support" !! 299 bool
142 select KMAP_LOCAL !! 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
143 help 307 help
144 The address space of Microblaze proc !! 308 Support VGA on an arbitrary hose; needed for several platforms
145 and it has to accommodate user addre !! 309 which always have multiple hoses, and whose consoles support it.
146 space as well as some memory mapped <<
147 have a large amount of physical memo <<
148 memory can be "permanently mapped" b <<
149 memory that is not permanently mappe <<
150 310
151 If unsure, say n. <<
152 311
153 config LOWMEM_SIZE_BOOL !! 312 config ALPHA_QEMU
154 bool "Set maximum low memory" !! 313 bool "Run under QEMU emulation"
155 depends on ADVANCED_OPTIONS !! 314 depends on !ALPHA_GENERIC
156 help 315 help
157 This option allows you to set the ma !! 316 Assume the presence of special features supported by QEMU PALcode
158 will be used as "low memory", that i !! 317 that reduce the overhead of system emulation.
159 access directly, without having to s !! 318
160 This can be useful in optimizing the !! 319 Generic kernels will auto-detect QEMU. But when building a
161 memory. !! 320 system-specific kernel, the assumption is that we want to
>> 321 eliminate as many runtime tests as possible.
162 322
163 Say N here unless you know what you !! 323 If unsure, say N.
164 324
165 config LOWMEM_SIZE <<
166 hex "Maximum low memory size (in bytes <<
167 default "0x30000000" <<
168 325
169 config MANUAL_RESET_VECTOR !! 326 config ALPHA_SRM
170 hex "Microblaze reset vector address s !! 327 bool "Use SRM as bootloader" if ALPHA_PC164 || ALPHA_TAKARA || ALPHA_ALCOR || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_NAUTILUS
171 default "0x0" !! 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
172 help 330 help
173 Set this option to have the kernel o !! 331 There are two different types of booting firmware on Alphas: SRM,
174 If zero, no change will be made to t !! 332 which is command line driven, and ARC, which uses menus and arrow
175 address 0x0. !! 333 keys. Details about the Linux/Alpha booting process are contained in
176 If non-zero, a jump instruction to t !! 334 the Linux/Alpha FAQ, accessible on the WWW from
177 to the reset vector at address 0x0. !! 335 <http://www.alphalinux.org/>.
178 If you are unsure, set it to default !! 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
179 352
180 config KERNEL_START_BOOL !! 353 config SMP
181 bool "Set custom kernel base address" !! 354 bool "Symmetric multi-processing support"
182 depends on ADVANCED_OPTIONS !! 355 depends on ALPHA_SABLE || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
183 help 356 help
184 This option allows you to set the ke !! 357 This enables support for systems with more than one CPU. If you have
185 the kernel will map low memory (the !! 358 a system with only one CPU, say N. If you have a system with more
186 this address). This can be useful i !! 359 than one CPU, say Y.
187 layout of the system. !! 360
>> 361 If you say N here, the kernel will run on uni- and multiprocessor
>> 362 machines, but will use only one CPU of a multiprocessor machine. If
>> 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.
188 366
189 Say N here unless you know what you !! 367 See also the SMP-HOWTO available at
>> 368 <https://www.tldp.org/docs.html#howto>.
190 369
191 config KERNEL_START !! 370 If you don't know what to do here, say N.
192 hex "Virtual address of kernel base" i <<
193 default "0xc0000000" <<
194 371
195 config TASK_SIZE_BOOL !! 372 config NR_CPUS
196 bool "Set custom user task size" !! 373 int "Maximum number of CPUs (2-32)"
197 depends on ADVANCED_OPTIONS !! 374 range 2 32
>> 375 depends on SMP
>> 376 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
>> 377 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
198 help 378 help
199 This option allows you to set the am !! 379 MARVEL support can handle a maximum of 32 CPUs, all the others
200 allocated to user tasks. This can b !! 380 with working support have a maximum of 4 CPUs.
201 virtual memory layout of the system. <<
202 381
203 Say N here unless you know what you !! 382 config ARCH_SPARSEMEM_ENABLE
>> 383 bool "Sparse Memory Support"
>> 384 help
>> 385 Say Y to support efficient handling of discontiguous physical memory,
>> 386 for systems that have huge holes in the physical address space.
204 387
205 config TASK_SIZE !! 388 config ALPHA_WTINT
206 hex "Size of user task space" if TASK_ !! 389 bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC
207 default "0x80000000" !! 390 default y if ALPHA_QEMU
>> 391 default n if ALPHA_EV56
>> 392 default n if !ALPHA_SRM && !ALPHA_GENERIC
>> 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.
>> 400
>> 401 For emulation under QEMU, definitely say Y here, as we have other
>> 402 mechanisms for measuring time than the cycle counter.
>> 403
>> 404 For EV4 (but not LCA), EV5 and EV56 systems, or for systems running
>> 405 MILO, sleep mode is not supported so you might as well say N here.
>> 406
>> 407 For SMP systems we cannot use the cycle counter for timing anyway,
>> 408 so you might as well say Y here.
>> 409
>> 410 If unsure, say N.
>> 411
>> 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.
>> 419
>> 420 Under normal circumstances, this is so far and above what is needed
>> 421 as to be laughable. However, there are certain applications (such
>> 422 as benchmark-grade in-kernel web serving) that can make use of as
>> 423 much vmalloc space as is available.
>> 424
>> 425 Say N unless you know you need gobs and gobs of vmalloc space.
>> 426
>> 427 config VERBOSE_MCHECK
>> 428 bool "Verbose Machine Checks"
>> 429
>> 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.
>> 437
>> 438 For example, if one wanted the option of printing verbose
>> 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.
>> 445
>> 446 Take the default (1) unless you want more control or more info.
208 447
209 config MB_MANAGER !! 448 choice
210 bool "Support for Microblaze Manager" !! 449 prompt "Timer interrupt frequency (HZ)?"
211 depends on ADVANCED_OPTIONS !! 450 default HZ_128 if ALPHA_QEMU
>> 451 default HZ_1200 if ALPHA_RAWHIDE
>> 452 default HZ_1024
212 help 453 help
213 This option enables API for configur !! 454 The frequency at which timer interrupts occur. A high frequency
214 control register, which is consumed !! 455 minimizes latency, whereas a low frequency minimizes overhead of
215 block the break. !! 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
216 475
217 Say N here unless you know what you !! 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.
218 507
219 endmenu 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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