1 # SPDX-License-Identifier: GPL-2.0-only !! 1 # SPDX-License-Identifier: GPL-2.0
2 # !! 2 config ALPHA
3 # Copyright (C) 2004, 2007-2010, 2011-2012 Syn !! 3 bool
4 # !! 4 default y
5 !! 5 select ARCH_32BIT_USTAT_F_TINODE
6 config ARC !! 6 select ARCH_HAS_CURRENT_STACK_POINTER
7 def_bool y !! 7 select ARCH_MIGHT_HAVE_PC_PARPORT
8 select ARC_TIMERS !! 8 select ARCH_MIGHT_HAVE_PC_SERIO
9 select ARCH_HAS_CACHE_LINE_SIZE !! 9 select ARCH_NO_PREEMPT
10 select ARCH_HAS_DEBUG_VM_PGTABLE !! 10 select ARCH_NO_SG_CHAIN
11 select ARCH_HAS_DMA_PREP_COHERENT !! 11 select ARCH_USE_CMPXCHG_LOCKREF
12 select ARCH_HAS_PTE_SPECIAL !! 12 select DMA_OPS if PCI
13 select ARCH_HAS_SETUP_DMA_OPS !! 13 select FORCE_PCI if !ALPHA_JENSEN
14 select ARCH_HAS_SYNC_DMA_FOR_CPU !! 14 select PCI_DOMAINS if PCI
15 select ARCH_HAS_SYNC_DMA_FOR_DEVICE !! 15 select PCI_SYSCALL if PCI
16 select ARCH_NEED_CMPXCHG_1_EMU !! 16 select HAVE_ASM_MODVERSIONS
17 select ARCH_SUPPORTS_ATOMIC_RMW if ARC !! 17 select HAVE_PCSPKR_PLATFORM
18 select ARCH_32BIT_OFF_T !! 18 select HAVE_PERF_EVENTS
19 select BUILDTIME_TABLE_SORT !! 19 select NEED_DMA_MAP_STATE
20 select CLONE_BACKWARDS !! 20 select NEED_SG_DMA_LENGTH
21 select COMMON_CLK !! 21 select GENERIC_IRQ_PROBE
22 select DMA_DIRECT_REMAP <<
23 select GENERIC_ATOMIC64 if !ISA_ARCV2 <<
24 # for now, we don't need GENERIC_IRQ_P <<
25 select GENERIC_IRQ_SHOW <<
26 select GENERIC_PCI_IOMAP 22 select GENERIC_PCI_IOMAP
27 select GENERIC_PENDING_IRQ if SMP !! 23 select AUTO_IRQ_AFFINITY if SMP
28 select GENERIC_SCHED_CLOCK !! 24 select GENERIC_IRQ_SHOW
>> 25 select ARCH_WANT_IPC_PARSE_VERSION
>> 26 select ARCH_HAVE_NMI_SAFE_CMPXCHG
>> 27 select AUDIT_ARCH
>> 28 select GENERIC_CPU_VULNERABILITIES
29 select GENERIC_SMP_IDLE_THREAD 29 select GENERIC_SMP_IDLE_THREAD
30 select GENERIC_IOREMAP !! 30 select HAS_IOPORT
31 select GENERIC_STRNCPY_FROM_USER if MM !! 31 select HAVE_ARCH_AUDITSYSCALL
32 select GENERIC_STRNLEN_USER if MMU <<
33 select HAVE_ARCH_KGDB <<
34 select HAVE_ARCH_TRACEHOOK <<
35 select HAVE_ARCH_TRANSPARENT_HUGEPAGE <<
36 select HAVE_DEBUG_STACKOVERFLOW <<
37 select HAVE_DEBUG_KMEMLEAK <<
38 select HAVE_IOREMAP_PROT <<
39 select HAVE_KERNEL_GZIP <<
40 select HAVE_KERNEL_LZMA <<
41 select HAVE_KPROBES <<
42 select HAVE_KRETPROBES <<
43 select HAVE_REGS_AND_STACK_ACCESS_API <<
44 select HAVE_MOD_ARCH_SPECIFIC 32 select HAVE_MOD_ARCH_SPECIFIC
45 select HAVE_PERF_EVENTS <<
46 select HAVE_SYSCALL_TRACEPOINTS <<
47 select IRQ_DOMAIN <<
48 select LOCK_MM_AND_FIND_VMA 33 select LOCK_MM_AND_FIND_VMA
49 select MODULES_USE_ELF_RELA 34 select MODULES_USE_ELF_RELA
50 select OF !! 35 select ODD_RT_SIGACTION
51 select OF_EARLY_FLATTREE !! 36 select OLD_SIGSUSPEND
52 select PCI_SYSCALL if PCI !! 37 select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67
53 select HAVE_ARCH_JUMP_LABEL if ISA_ARC !! 38 select MMU_GATHER_NO_RANGE
54 select TRACE_IRQFLAGS_SUPPORT !! 39 select SPARSEMEM_EXTREME if SPARSEMEM
55 select HAVE_EBPF_JIT if ISA_ARCV2 !! 40 select ZONE_DMA
>> 41 help
>> 42 The Alpha is a 64-bit general-purpose processor designed and
>> 43 marketed by the Digital Equipment Corporation of blessed memory,
>> 44 now Hewlett-Packard. The Alpha Linux project has a home page at
>> 45 <http://www.alphalinux.org/>.
56 46
57 config LOCKDEP_SUPPORT !! 47 config 64BIT
58 def_bool y <<
59 <<
60 config SCHED_OMIT_FRAME_POINTER <<
61 def_bool y <<
62 <<
63 config GENERIC_CSUM <<
64 def_bool y <<
65 <<
66 config ARCH_FLATMEM_ENABLE <<
67 def_bool y 48 def_bool y
68 49
69 config MMU 50 config MMU
70 def_bool y !! 51 bool
>> 52 default y
71 53
72 config NO_IOPORT_MAP !! 54 config ARCH_HAS_ILOG2_U32
73 def_bool y !! 55 bool
>> 56 default n
>> 57
>> 58 config ARCH_HAS_ILOG2_U64
>> 59 bool
>> 60 default n
74 61
75 config GENERIC_CALIBRATE_DELAY 62 config GENERIC_CALIBRATE_DELAY
76 def_bool y !! 63 bool
>> 64 default y
77 65
78 config GENERIC_HWEIGHT !! 66 config GENERIC_ISA_DMA
79 def_bool y !! 67 bool
>> 68 default y
80 69
81 config STACKTRACE_SUPPORT !! 70 config PGTABLE_LEVELS
82 def_bool y !! 71 int
83 select STACKTRACE !! 72 default 3
84 73
85 menu "ARC Architecture Configuration" !! 74 config AUDIT_ARCH
>> 75 bool
86 76
87 menu "ARC Platform/SoC/Board" !! 77 menu "System setup"
88 78
89 source "arch/arc/plat-tb10x/Kconfig" !! 79 choice
90 source "arch/arc/plat-axs10x/Kconfig" !! 80 prompt "Alpha system type"
91 source "arch/arc/plat-hsdk/Kconfig" !! 81 default ALPHA_GENERIC
>> 82 help
>> 83 This is the system type of your hardware. A "generic" kernel will
>> 84 run on any supported Alpha system. However, if you configure a
>> 85 kernel for your specific system, it will be faster and smaller.
92 86
93 endmenu !! 87 To find out what type of Alpha system you have, you may want to
>> 88 check out the Linux/Alpha FAQ, accessible on the WWW from
>> 89 <http://www.alphalinux.org/>. In summary:
94 90
95 choice !! 91 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
96 prompt "ARC Instruction Set" !! 92 Alpha-XL XL-233, XL-266
97 default ISA_ARCV2 !! 93 AlphaBook1 Alpha laptop
>> 94 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
>> 95 Cabriolet AlphaPC64, AlphaPCI64
>> 96 DP264 DP264 / DS20 / ES40 / DS10 / DS10L
>> 97 EB164 EB164 21164 evaluation board
>> 98 EB64+ EB64+ 21064 evaluation board
>> 99 EB66 EB66 21066 evaluation board
>> 100 EB66+ EB66+ 21066 evaluation board
>> 101 Jensen DECpc 150, DEC 2000 models 300, 500
>> 102 LX164 AlphaPC164-LX
>> 103 Lynx AS 2100A
>> 104 Miata Personal Workstation 433/500/600 a/au
>> 105 Marvel AlphaServer ES47 / ES80 / GS1280
>> 106 Mikasa AS 1000
>> 107 Noname AXPpci33, UDB (Multia)
>> 108 Noritake AS 1000A, AS 600A, AS 800
>> 109 PC164 AlphaPC164
>> 110 Rawhide AS 1200, AS 4000, AS 4100
>> 111 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
>> 112 SX164 AlphaPC164-SX
>> 113 Sable AS 2000, AS 2100
>> 114 Shark DS 20L
>> 115 Takara Takara (OEM)
>> 116 Titan AlphaServer ES45 / DS25 / DS15
>> 117 Wildfire AlphaServer GS 40/80/160/320
98 118
99 config ISA_ARCOMPACT !! 119 If you don't know what to do, choose "generic".
100 bool "ARCompact ISA" <<
101 select CPU_NO_EFFICIENT_FFS <<
102 help <<
103 The original ARC ISA of ARC600/700 c <<
104 120
105 config ISA_ARCV2 !! 121 config ALPHA_GENERIC
106 bool "ARC ISA v2" !! 122 bool "Generic"
107 select ARC_TIMERS_64BIT !! 123 depends on TTY
>> 124 select HAVE_EISA
108 help 125 help
109 ISA for the Next Generation ARC-HS c !! 126 A generic kernel will run on all supported Alpha hardware.
110 127
111 endchoice !! 128 config ALPHA_ALCOR
>> 129 bool "Alcor/Alpha-XLT"
>> 130 select HAVE_EISA
>> 131 help
>> 132 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
>> 133 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
>> 134 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
>> 135 controller (256-bit memory bus) and a PCI interface. It also does
>> 136 all the work required to support an external Bcache and to maintain
>> 137 memory coherence when a PCI device DMAs into (or out of) memory.
112 138
113 menu "ARC CPU Configuration" !! 139 config ALPHA_XL
>> 140 bool "Alpha-XL"
>> 141 help
>> 142 XL-233 and XL-266-based Alpha systems.
114 143
115 choice !! 144 config ALPHA_BOOK1
116 prompt "ARC Core" !! 145 bool "AlphaBook1"
117 default ARC_CPU_770 if ISA_ARCOMPACT !! 146 help
118 default ARC_CPU_HS if ISA_ARCV2 !! 147 Dec AlphaBook1/Burns Alpha-based laptops.
119 <<
120 config ARC_CPU_770 <<
121 bool "ARC770" <<
122 depends on ISA_ARCOMPACT <<
123 select ARC_HAS_SWAPE <<
124 help <<
125 Support for ARC770 core introduced w <<
126 This core has a bunch of cool new fe <<
127 -MMU-v3: Variable Page Sz (4k, 8k, 1 <<
128 Shared Address Spaces (for <<
129 -Caches: New Prog Model, Region Flus <<
130 -Insns: endian swap, load-locked/sto <<
131 <<
132 config ARC_CPU_HS <<
133 bool "ARC-HS" <<
134 depends on ISA_ARCV2 <<
135 help <<
136 Support for ARC HS38x Cores based on <<
137 The notable features are: <<
138 - SMP configurations of up to 4 co <<
139 - Optional L2 Cache and IO-Coheren <<
140 - Revised Interrupt Architecture ( <<
141 auto stack switch, auto regfil <<
142 - MMUv4 (PIPT dcache, Huge Pages) <<
143 - Instructions for <<
144 * 64bit load/store: LDD, STD <<
145 * Hardware assisted divide/rem <<
146 * Function prologue/epilogue: <<
147 * IRQ enable/disable: CLRI, SE <<
148 * pop count: FFS, FLS <<
149 * SETcc, BMSKN, XBFU... <<
150 148
151 endchoice !! 149 config ALPHA_AVANTI_CH
>> 150 bool "Avanti"
152 151
153 config ARC_TUNE_MCPU !! 152 config ALPHA_CABRIOLET
154 string "Override default -mcpu compile !! 153 bool "Cabriolet"
155 default "" !! 154 help
156 help !! 155 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
157 Override default -mcpu=xxx compiler !! 156 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
158 the ISA version) with the specified !! 157 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
159 NOTE: If specified flag isn't suppor !! 158 Bcache SIMMs. Requires power supply with 3.3V output.
160 ISA default value will be used as a <<
161 159
162 config CPU_BIG_ENDIAN !! 160 config ALPHA_DP264
163 bool "Enable Big Endian Mode" !! 161 bool "DP264"
164 help 162 help
165 Build kernel for Big Endian Mode of !! 163 Various 21264 systems with the tsunami core logic chipset.
>> 164 API Networks: 264DP, UP2000(+), CS20;
>> 165 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
166 166
167 config SMP !! 167 config ALPHA_EB164
168 bool "Symmetric Multi-Processing" !! 168 bool "EB164"
169 select ARC_MCIP if ISA_ARCV2 <<
170 help 169 help
171 This enables support for systems wit !! 170 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
>> 171 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
>> 172 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
>> 173 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
>> 174 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
>> 175 motherboard. Requires power supply with 3.3V output.
172 176
173 if SMP !! 177 config ALPHA_EB64P_CH
>> 178 bool "EB64+"
174 179
175 config NR_CPUS !! 180 config ALPHA_EB66
176 int "Maximum number of CPUs (2-4096)" !! 181 bool "EB66"
177 range 2 4096 <<
178 default "4" <<
179 <<
180 config ARC_SMP_HALT_ON_RESET <<
181 bool "Enable Halt-on-reset boot mode" <<
182 help <<
183 In SMP configuration cores can be co <<
184 or they could all start at same time <<
185 masters are parked until Master kick <<
186 at designated entry point. For other <<
187 entry point and spin wait for Master <<
188 <<
189 endif #SMP <<
190 <<
191 config ARC_MCIP <<
192 bool "ARConnect Multicore IP (MCIP) Su <<
193 depends on ISA_ARCV2 <<
194 default y if SMP <<
195 help 182 help
196 This IP block enables SMP in ARC-HS3 !! 183 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
197 It provides for cross-core interrupt !! 184 identical to EB64+. Baby PC-AT size. Runs from standard PC power
198 hardware semaphores, shared memory,. !! 185 supply. The EB66 schematic was published as a marketing poster
>> 186 advertising the 21066 as "the first microprocessor in the world with
>> 187 embedded PCI".
199 188
200 menuconfig ARC_CACHE !! 189 config ALPHA_EB66P
201 bool "Enable Cache Support" !! 190 bool "EB66+"
202 default y !! 191 help
>> 192 Later variant of the EB66 board.
203 193
204 if ARC_CACHE !! 194 config ALPHA_EIGER
>> 195 bool "Eiger"
>> 196 help
>> 197 Apparently an obscure OEM single-board computer based on the
>> 198 Typhoon/Tsunami chipset family. Information on it is scanty.
205 199
206 config ARC_CACHE_LINE_SHIFT !! 200 config ALPHA_JENSEN
207 int "Cache Line Length (as power of 2) !! 201 bool "Jensen"
208 range 5 7 !! 202 select HAVE_EISA
209 default "6" <<
210 help 203 help
211 Starting with ARC700 4.9, Cache line !! 204 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
212 This option specifies "N", with Line !! 205 of the first-generation Alpha systems. A number of these systems
213 So line lengths of 32, 64, 128 are s !! 206 seem to be available on the second- hand market. The Jensen is a
214 Linux only supports same line length !! 207 floor-standing tower system which originally used a 150MHz 21064 It
>> 208 used programmable logic to interface a 486 EISA I/O bridge to the
>> 209 CPU.
215 210
216 config ARC_HAS_ICACHE !! 211 config ALPHA_LX164
217 bool "Use Instruction Cache" !! 212 bool "LX164"
218 default y !! 213 help
>> 214 A technical overview of this board is available at
>> 215 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
219 216
220 config ARC_HAS_DCACHE !! 217 config ALPHA_LYNX
221 bool "Use Data Cache" !! 218 bool "Lynx"
222 default y !! 219 select HAVE_EISA
>> 220 help
>> 221 AlphaServer 2100A-based systems.
223 222
224 config ARC_CACHE_PAGES !! 223 config ALPHA_MARVEL
225 bool "Per Page Cache Control" !! 224 bool "Marvel"
226 default y !! 225 help
227 depends on ARC_HAS_ICACHE || ARC_HAS_D !! 226 AlphaServer ES47 / ES80 / GS1280 based on EV7.
>> 227
>> 228 config ALPHA_MIATA
>> 229 bool "Miata"
>> 230 select HAVE_EISA
228 help 231 help
229 This can be used to over-ride the gl !! 232 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
230 per-page basis (but only for pages a !! 233 or 600au).
231 Kernel Virtual address or User Virtu <<
232 TLB entries have a per-page Cache En <<
233 Note that Global I/D ENABLE + Per Pa <<
234 Global DISABLE + Per Page ENABLE won <<
235 234
236 endif #ARC_CACHE !! 235 config ALPHA_MIKASA
>> 236 bool "Mikasa"
>> 237 help
>> 238 AlphaServer 1000-based Alpha systems.
237 239
238 config ARC_HAS_ICCM !! 240 config ALPHA_NAUTILUS
239 bool "Use ICCM" !! 241 bool "Nautilus"
240 help 242 help
241 Single Cycle RAMS to store Fast Path !! 243 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
242 244
243 config ARC_ICCM_SZ !! 245 config ALPHA_NONAME_CH
244 int "ICCM Size in KB" !! 246 bool "Noname"
245 default "64" <<
246 depends on ARC_HAS_ICCM <<
247 247
248 config ARC_HAS_DCCM !! 248 config ALPHA_NORITAKE
249 bool "Use DCCM" !! 249 bool "Noritake"
>> 250 select HAVE_EISA
250 help 251 help
251 Single Cycle RAMS to store Fast Path !! 252 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
>> 253 systems.
252 254
253 config ARC_DCCM_SZ !! 255 config ALPHA_PC164
254 int "DCCM Size in KB" !! 256 bool "PC164"
255 default "64" <<
256 depends on ARC_HAS_DCCM <<
257 257
258 config ARC_DCCM_BASE !! 258 config ALPHA_P2K
259 hex "DCCM map address" !! 259 bool "Platform2000"
260 default "0xA0000000" <<
261 depends on ARC_HAS_DCCM <<
262 260
263 choice !! 261 config ALPHA_RAWHIDE
264 prompt "MMU Version" !! 262 bool "Rawhide"
265 default ARC_MMU_V3 if ISA_ARCOMPACT !! 263 select HAVE_EISA
266 default ARC_MMU_V4 if ISA_ARCV2 !! 264 help
267 !! 265 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
268 config ARC_MMU_V3 !! 266 See HOWTO at
269 bool "MMU v3" !! 267 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
270 depends on ISA_ARCOMPACT <<
271 help <<
272 Introduced with ARC700 4.10: New Fea <<
273 Variable Page size (1k-16k), var JTL <<
274 Shared Address Spaces (SASID) <<
275 <<
276 config ARC_MMU_V4 <<
277 bool "MMU v4" <<
278 depends on ISA_ARCV2 <<
279 268
280 endchoice !! 269 config ALPHA_RUFFIAN
>> 270 bool "Ruffian"
>> 271 help
>> 272 Samsung APC164UX. There is a page on known problems and workarounds
>> 273 at <http://www.alphalinux.org/faq/FAQ-11.html>.
281 274
>> 275 config ALPHA_RX164
>> 276 bool "RX164"
282 277
283 choice !! 278 config ALPHA_SX164
284 prompt "MMU Page Size" !! 279 bool "SX164"
285 default ARC_PAGE_SIZE_8K <<
286 280
287 config ARC_PAGE_SIZE_8K !! 281 config ALPHA_SABLE
288 bool "8KB" !! 282 bool "Sable"
289 select HAVE_PAGE_SIZE_8KB !! 283 select HAVE_EISA
290 help !! 284 help
291 Choose between 8k vs 16k !! 285 Digital AlphaServer 2000 and 2100-based systems.
292 <<
293 config ARC_PAGE_SIZE_16K <<
294 select HAVE_PAGE_SIZE_16KB <<
295 bool "16KB" <<
296 <<
297 config ARC_PAGE_SIZE_4K <<
298 bool "4KB" <<
299 select HAVE_PAGE_SIZE_4KB <<
300 depends on ARC_MMU_V3 || ARC_MMU_V4 <<
301 286
302 endchoice !! 287 config ALPHA_SHARK
>> 288 bool "Shark"
303 289
304 choice !! 290 config ALPHA_TAKARA
305 prompt "MMU Super Page Size" !! 291 bool "Takara"
306 depends on ISA_ARCV2 && TRANSPARENT_HU !! 292 help
307 default ARC_HUGEPAGE_2M !! 293 Alpha 11164-based OEM single-board computer.
308 294
309 config ARC_HUGEPAGE_2M !! 295 config ALPHA_TITAN
310 bool "2MB" !! 296 bool "Titan"
>> 297 help
>> 298 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
311 299
312 config ARC_HUGEPAGE_16M !! 300 config ALPHA_WILDFIRE
313 bool "16MB" !! 301 bool "Wildfire"
>> 302 help
>> 303 AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
314 304
315 endchoice 305 endchoice
316 306
317 config PGTABLE_LEVELS !! 307 # clear all implied options (don't want default values for those):
318 int "Number of Page table levels" !! 308 # Most of these machines have ISA slots; not exactly sure which don't,
319 default 2 !! 309 # and this doesn't activate hordes of code, so do it always.
>> 310 config ISA
>> 311 bool
>> 312 default y
>> 313 help
>> 314 Find out whether you have ISA slots on your motherboard. ISA is the
>> 315 name of a bus system, i.e. the way the CPU talks to the other stuff
>> 316 inside your box. Other bus systems are PCI, EISA, MicroChannel
>> 317 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
>> 318 newer boards don't support it. If you have ISA, say Y, otherwise N.
320 319
321 config ARC_COMPACT_IRQ_LEVELS !! 320 config ISA_DMA_API
322 depends on ISA_ARCOMPACT !! 321 bool
323 bool "Setup Timer IRQ as high Priority !! 322 default y
324 # if SMP, LV2 enabled ONLY if ARC impl <<
325 depends on !SMP <<
326 323
327 config ARC_FPU_SAVE_RESTORE !! 324 config ALPHA_NONAME
328 bool "Enable FPU state persistence acr !! 325 bool
>> 326 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
>> 327 default y
329 help 328 help
330 ARCompact FPU has internal registers !! 329 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
331 Floating Point operations. There are !! 330 UDB). This design was produced by Digital's Technical OEM (TOEM)
332 for floating point exceptions and ro !! 331 group. It uses the 21066 processor running at 166MHz or 233MHz. It
333 preserved across task context switch !! 332 is a baby-AT size, and runs from a standard PC power supply. It has
>> 333 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
>> 334 2 versions, with either PS/2 or large DIN connectors for the
>> 335 keyboard.
334 336
335 config ARC_CANT_LLSC !! 337 config ALPHA_EV4
336 def_bool n !! 338 bool
>> 339 depends on ALPHA_JENSEN || (ALPHA_SABLE && !ALPHA_GAMMA) || ALPHA_LYNX || ALPHA_NORITAKE && !ALPHA_PRIMO || ALPHA_MIKASA && !ALPHA_PRIMO || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL || ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
>> 340 default y if !ALPHA_LYNX
337 341
338 config ARC_HAS_LLSC !! 342 config ALPHA_LCA
339 bool "Insn: LLOCK/SCOND (efficient ato !! 343 bool
>> 344 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
340 default y 345 default y
341 depends on !ARC_CANT_LLSC <<
342 346
343 config ARC_HAS_SWAPE !! 347 config ALPHA_APECS
344 bool "Insn: SWAPE (endian-swap)" !! 348 bool
>> 349 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
345 default y 350 default y
346 351
347 if ISA_ARCV2 !! 352 config ALPHA_EB64P
>> 353 bool
>> 354 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
>> 355 default y
>> 356 help
>> 357 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
>> 358 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
>> 359 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
>> 360 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
>> 361 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
>> 362 Runs from standard PC power supply.
348 363
349 config ARC_USE_UNALIGNED_MEM_ACCESS !! 364 config ALPHA_EV5
350 bool "Enable unaligned access in HW" !! 365 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
>> 366 default y if ALPHA_RX164 || ALPHA_RAWHIDE || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_SABLE && ALPHA_GAMMA || ALPHA_NORITAKE && ALPHA_PRIMO || ALPHA_MIKASA && ALPHA_PRIMO || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR
>> 367
>> 368 config ALPHA_EV4
>> 369 bool
>> 370 default y if ALPHA_LYNX && !ALPHA_EV5
>> 371
>> 372 config ALPHA_CIA
>> 373 bool
>> 374 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_NORITAKE && ALPHA_PRIMO || ALPHA_MIKASA && ALPHA_PRIMO || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR
351 default y 375 default y
352 select HAVE_EFFICIENT_UNALIGNED_ACCESS !! 376
>> 377 config ALPHA_EV56
>> 378 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
>> 379 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
>> 380
>> 381 config ALPHA_EV56
>> 382 prompt "EV56 CPU (speed >= 333MHz)?"
>> 383 depends on ALPHA_NORITAKE || ALPHA_PRIMO
>> 384
>> 385 config ALPHA_EV56
>> 386 prompt "EV56 CPU (speed >= 400MHz)?"
>> 387 depends on ALPHA_RAWHIDE
>> 388
>> 389 config ALPHA_PRIMO
>> 390 bool "EV5 CPU daughtercard (model 5/xxx)?"
>> 391 depends on ALPHA_NORITAKE || ALPHA_MIKASA
353 help 392 help
354 The ARC HS architecture supports una !! 393 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
355 which is disabled by default. Enable <<
356 hardware and use software to use it <<
357 394
358 config ARC_HAS_LL64 !! 395 config ALPHA_GAMMA
359 bool "Insn: 64bit LDD/STD" !! 396 bool "EV5 CPU(s) (model 5/xxx)?"
>> 397 depends on ALPHA_SABLE
360 help 398 help
361 Enable gcc to generate 64-bit load/s !! 399 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
362 ISA mandates even/odd registers to a !! 400
363 dest operands with 2 possible source !! 401 config ALPHA_GAMMA
>> 402 bool
>> 403 depends on ALPHA_LYNX
364 default y 404 default y
365 405
366 config ARC_HAS_DIV_REM !! 406 config ALPHA_T2
367 bool "Insn: div, divu, rem, remu" !! 407 bool
>> 408 depends on ALPHA_SABLE || ALPHA_LYNX
368 default y 409 default y
369 410
370 config ARC_HAS_ACCL_REGS !! 411 config ALPHA_PYXIS
371 bool "Reg Pair ACCL:ACCH (FPU and/or M !! 412 bool
>> 413 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
372 default y 414 default y
373 help <<
374 Depending on the configuration, CPU <<
375 (also referred to as r58:r59). These <<
376 kernel needs to save/restore per pro <<
377 415
378 config ARC_DSP_HANDLED !! 416 config ALPHA_EV6
379 def_bool n !! 417 bool
>> 418 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
>> 419 default y
380 420
381 config ARC_DSP_SAVE_RESTORE_REGS !! 421 config ALPHA_TSUNAMI
382 def_bool n !! 422 bool
>> 423 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
>> 424 default y
383 425
384 choice !! 426 config ALPHA_EV67
385 prompt "DSP support" !! 427 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
386 default ARC_DSP_NONE !! 428 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
387 help 429 help
388 Depending on the configuration, CPU !! 430 Is this a machine based on the EV67 core? If in doubt, select N here
389 (ACC0_GLO, ACC0_GHI, DSP_BFLY0, DSP_ !! 431 and the machine will be treated as an EV6.
390 Below are options describing how to !! 432
391 interrupt entry / exit and in contex !! 433 config ALPHA_MCPCIA
392 !! 434 bool
393 config ARC_DSP_NONE !! 435 depends on ALPHA_RAWHIDE
394 bool "No DSP extension presence in HW" !! 436 default y
395 help !! 437
396 No DSP extension presence in HW !! 438 config ALPHA_POLARIS
397 !! 439 bool
398 config ARC_DSP_KERNEL !! 440 depends on ALPHA_RX164
399 bool "DSP extension in HW, no support !! 441 default y
400 select ARC_HAS_ACCL_REGS !! 442
401 select ARC_DSP_HANDLED !! 443 config ALPHA_IRONGATE
402 help !! 444 bool
403 DSP extension presence in HW, no sup !! 445 depends on ALPHA_NAUTILUS
404 applications. We don't save / restor !! 446 default y
405 some minimal preparations so userspa !! 447
406 !! 448 config GENERIC_HWEIGHT
407 config ARC_DSP_USERSPACE !! 449 bool
408 bool "Support DSP for userspace apps" !! 450 default y if !ALPHA_EV67
409 select ARC_HAS_ACCL_REGS !! 451
410 select ARC_DSP_HANDLED !! 452 config ALPHA_AVANTI
411 select ARC_DSP_SAVE_RESTORE_REGS !! 453 bool
412 help !! 454 depends on ALPHA_XL || ALPHA_AVANTI_CH
413 DSP extension presence in HW, suppor !! 455 default y
414 run DSP-enabled userspace applicatio <<
415 <<
416 config ARC_DSP_AGU_USERSPACE <<
417 bool "Support DSP with AGU for userspa <<
418 select ARC_HAS_ACCL_REGS <<
419 select ARC_DSP_HANDLED <<
420 select ARC_DSP_SAVE_RESTORE_REGS <<
421 help 456 help
422 DSP and AGU extensions presence in H !! 457 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
423 and AGU registers to run DSP-enabled !! 458 Alphas. Info at
424 endchoice !! 459 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
425 460
426 config ARC_IRQ_NO_AUTOSAVE !! 461 config ALPHA_BROKEN_IRQ_MASK
427 bool "Disable hardware autosave regfil !! 462 bool
428 default n !! 463 depends on ALPHA_GENERIC || ALPHA_PC164
>> 464 default y
>> 465
>> 466 config VGA_HOSE
>> 467 bool
>> 468 depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI)
>> 469 default y
429 help 470 help
430 On HS cores, taken interrupt auto sa !! 471 Support VGA on an arbitrary hose; needed for several platforms
431 This is programmable and can be opti !! 472 which always have multiple hoses, and whose consoles support it.
432 software INTERRUPT_PROLOGUE/EPILGUE <<
433 <<
434 config ARC_LPB_DISABLE <<
435 bool "Disable loop buffer (LPB)" <<
436 help <<
437 On HS cores, loop buffer (LPB) is pr <<
438 be optionally disabled. <<
439 <<
440 endif # ISA_ARCV2 <<
441 <<
442 endmenu # "ARC CPU Configuration" <<
443 <<
444 config LINUX_LINK_BASE <<
445 hex "Kernel link address" <<
446 default "0x80000000" <<
447 help <<
448 ARC700 divides the 32 bit phy addres <<
449 -Lower 2G (0 - 0x7FFF_FFFF ) is user <<
450 -Upper 2G (0x8000_0000 onwards) is u <<
451 Typically Linux kernel is linked at <<
452 hence the default value of 0x8zs. <<
453 However some customers have peripher <<
454 Linux needs to be scooted a bit. <<
455 If you don't know what the above mea <<
456 This needs to match memory start add <<
457 <<
458 config LINUX_RAM_BASE <<
459 hex "RAM base address" <<
460 default LINUX_LINK_BASE <<
461 help <<
462 By default Linux is linked at base o <<
463 cases (such as HSDK), Linux can't be <<
464 this option. <<
465 <<
466 config HIGHMEM <<
467 bool "High Memory Support" <<
468 select HAVE_ARCH_PFN_VALID <<
469 select KMAP_LOCAL <<
470 help <<
471 With ARC 2G:2G address split, only u <<
472 kernel. Enable this to potentially a <<
473 in future <<
474 <<
475 config ARC_HAS_PAE40 <<
476 bool "Support for the 40-bit Physical <<
477 depends on ISA_ARCV2 <<
478 select HIGHMEM <<
479 select PHYS_ADDR_T_64BIT <<
480 help <<
481 Enable access to physical memory bey <<
482 ARC cores with 40 bit Physical Addre <<
483 <<
484 config ARC_KVADDR_SIZE <<
485 int "Kernel Virtual Address Space size <<
486 range 0 512 <<
487 default "256" <<
488 help <<
489 The kernel address space is carved o <<
490 space for catering to vmalloc, modul <<
491 not suffice vmalloc requirements of <<
492 this to be stretched to 512 MB (by e <<
493 kernel-user gutter) <<
494 <<
495 config ARC_CURR_IN_REG <<
496 bool "cache current task pointer in gp <<
497 default y <<
498 help <<
499 This reserves gp register to point t <<
500 kernel mode eliding memory access fo <<
501 <<
502 <<
503 config ARC_EMUL_UNALIGNED <<
504 bool "Emulate unaligned memory access <<
505 select SYSCTL_ARCH_UNALIGN_NO_WARN <<
506 select SYSCTL_ARCH_UNALIGN_ALLOW <<
507 depends on ISA_ARCOMPACT <<
508 help <<
509 This enables misaligned 16 & 32 bit <<
510 Use ONLY-IF-ABS-NECESSARY as it will <<
511 potential bugs in code <<
512 473
513 config HZ <<
514 int "Timer Frequency" <<
515 default 100 <<
516 474
517 config ARC_METAWARE_HLINK !! 475 config ALPHA_QEMU
518 bool "Support for Metaware debugger as !! 476 bool "Run under QEMU emulation"
>> 477 depends on !ALPHA_GENERIC
519 help 478 help
520 This options allows a Linux userland !! 479 Assume the presence of special features supported by QEMU PALcode
521 host file system (open/creat/read/wr !! 480 that reduce the overhead of system emulation.
522 Metaware Debugger. This can come in <<
523 when there is no real usable periphe <<
524 481
525 menuconfig ARC_DBG !! 482 Generic kernels will auto-detect QEMU. But when building a
526 bool "ARC debugging" !! 483 system-specific kernel, the assumption is that we want to
527 default y !! 484 eliminate as many runtime tests as possible.
528 485
529 if ARC_DBG !! 486 If unsure, say N.
530 487
531 config ARC_DW2_UNWIND !! 488
532 bool "Enable DWARF specific kernel sta !! 489 config ALPHA_SRM
533 default y !! 490 bool "Use SRM as bootloader" if ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_NAUTILUS || ALPHA_NONAME
534 select KALLSYMS !! 491 depends on TTY
>> 492 default y if ALPHA_JENSEN || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_DP264 || ALPHA_RAWHIDE || ALPHA_EIGER || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
535 help 493 help
536 Compiles the kernel with DWARF unwin !! 494 There are two different types of booting firmware on Alphas: SRM,
537 to get stack backtraces. !! 495 which is command line driven, and ARC, which uses menus and arrow
>> 496 keys. Details about the Linux/Alpha booting process are contained in
>> 497 the Linux/Alpha FAQ, accessible on the WWW from
>> 498 <http://www.alphalinux.org/>.
>> 499
>> 500 The usual way to load Linux on an Alpha machine is to use MILO
>> 501 (a bootloader that lets you pass command line parameters to the
>> 502 kernel just like lilo does for the x86 architecture) which can be
>> 503 loaded either from ARC or can be installed directly as a permanent
>> 504 firmware replacement from floppy (which requires changing a certain
>> 505 jumper on the motherboard). If you want to do either of these, say N
>> 506 here. If MILO doesn't work on your system (true for Jensen
>> 507 motherboards), you can bypass it altogether and boot Linux directly
>> 508 from an SRM console; say Y here in order to do that. Note that you
>> 509 won't be able to boot from an IDE disk using SRM.
538 510
539 If you say Y here the resulting kern !! 511 If unsure, say N.
540 but not slower, and it will give ver <<
541 If you don't debug the kernel, you c <<
542 to solve problems without frame unwi <<
543 512
544 config ARC_DBG_JUMP_LABEL !! 513 config ARCH_MAY_HAVE_PC_FDC
545 bool "Paranoid checks in Static Keys ( !! 514 def_bool y
546 depends on JUMP_LABEL !! 515
547 default y if STATIC_KEYS_SELFTEST !! 516 config SMP
>> 517 bool "Symmetric multi-processing support"
>> 518 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
548 help 519 help
549 Enable paranoid checks and self-test !! 520 This enables support for systems with more than one CPU. If you have
550 part of static keys (jump labels) re !! 521 a system with only one CPU, say N. If you have a system with more
551 endif !! 522 than one CPU, say Y.
>> 523
>> 524 If you say N here, the kernel will run on uni- and multiprocessor
>> 525 machines, but will use only one CPU of a multiprocessor machine. If
>> 526 you say Y here, the kernel will run on many, but not all,
>> 527 uniprocessor machines. On a uniprocessor machine, the kernel
>> 528 will run faster if you say N here.
>> 529
>> 530 See also the SMP-HOWTO available at
>> 531 <https://www.tldp.org/docs.html#howto>.
>> 532
>> 533 If you don't know what to do here, say N.
552 534
553 config ARC_BUILTIN_DTB_NAME !! 535 config NR_CPUS
554 string "Built in DTB" !! 536 int "Maximum number of CPUs (2-32)"
>> 537 range 2 32
>> 538 depends on SMP
>> 539 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
>> 540 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
>> 541 help
>> 542 MARVEL support can handle a maximum of 32 CPUs, all the others
>> 543 with working support have a maximum of 4 CPUs.
>> 544
>> 545 config ARCH_SPARSEMEM_ENABLE
>> 546 bool "Sparse Memory Support"
>> 547 help
>> 548 Say Y to support efficient handling of discontiguous physical memory,
>> 549 for systems that have huge holes in the physical address space.
>> 550
>> 551 config ALPHA_WTINT
>> 552 bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC
>> 553 default y if ALPHA_QEMU
>> 554 default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA)
>> 555 default n if !ALPHA_SRM && !ALPHA_GENERIC
>> 556 default y if SMP
555 help 557 help
556 Set the name of the DTB to embed in !! 558 The Wait for Interrupt (WTINT) PALcall attempts to place the CPU
557 Leaving it blank selects the "nsim_7 !! 559 to sleep until the next interrupt. This may reduce the power
>> 560 consumed, and the heat produced by the computer. However, it has
>> 561 the side effect of making the cycle counter unreliable as a timing
>> 562 device across the sleep.
>> 563
>> 564 For emulation under QEMU, definitely say Y here, as we have other
>> 565 mechanisms for measuring time than the cycle counter.
>> 566
>> 567 For EV4 (but not LCA), EV5 and EV56 systems, or for systems running
>> 568 MILO, sleep mode is not supported so you might as well say N here.
>> 569
>> 570 For SMP systems we cannot use the cycle counter for timing anyway,
>> 571 so you might as well say Y here.
>> 572
>> 573 If unsure, say N.
>> 574
>> 575 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
>> 576 config ALPHA_LARGE_VMALLOC
>> 577 bool
>> 578 help
>> 579 Process creation and other aspects of virtual memory management can
>> 580 be streamlined if we restrict the kernel to one PGD for all vmalloc
>> 581 allocations. This equates to about 8GB.
>> 582
>> 583 Under normal circumstances, this is so far and above what is needed
>> 584 as to be laughable. However, there are certain applications (such
>> 585 as benchmark-grade in-kernel web serving) that can make use of as
>> 586 much vmalloc space as is available.
>> 587
>> 588 Say N unless you know you need gobs and gobs of vmalloc space.
>> 589
>> 590 config VERBOSE_MCHECK
>> 591 bool "Verbose Machine Checks"
>> 592
>> 593 config VERBOSE_MCHECK_ON
>> 594 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
>> 595 depends on VERBOSE_MCHECK
>> 596 default 1
>> 597 help
>> 598 This option allows the default printing mode to be set, and then
>> 599 possibly overridden by a boot command argument.
>> 600
>> 601 For example, if one wanted the option of printing verbose
>> 602 machine checks, but wanted the default to be as if verbose
>> 603 machine check printing was turned off, then one would choose
>> 604 the printing mode to be 0. Then, upon reboot, one could add
>> 605 the boot command line "verbose_mcheck=1" to get the normal
>> 606 verbose machine check printing, or "verbose_mcheck=2" to get
>> 607 the maximum information available.
>> 608
>> 609 Take the default (1) unless you want more control or more info.
558 610
559 endmenu # "ARC Architecture Configuration" !! 611 choice
>> 612 prompt "Timer interrupt frequency (HZ)?"
>> 613 default HZ_128 if ALPHA_QEMU
>> 614 default HZ_1200 if ALPHA_RAWHIDE
>> 615 default HZ_1024
>> 616 help
>> 617 The frequency at which timer interrupts occur. A high frequency
>> 618 minimizes latency, whereas a low frequency minimizes overhead of
>> 619 process accounting. The later effect is especially significant
>> 620 when being run under QEMU.
>> 621
>> 622 Note that some Alpha hardware cannot change the interrupt frequency
>> 623 of the timer. If unsure, say 1024 (or 1200 for Rawhide).
>> 624
>> 625 config HZ_32
>> 626 bool "32 Hz"
>> 627 config HZ_64
>> 628 bool "64 Hz"
>> 629 config HZ_128
>> 630 bool "128 Hz"
>> 631 config HZ_256
>> 632 bool "256 Hz"
>> 633 config HZ_1024
>> 634 bool "1024 Hz"
>> 635 config HZ_1200
>> 636 bool "1200 Hz"
>> 637 endchoice
>> 638
>> 639 config HZ
>> 640 int
>> 641 default 32 if HZ_32
>> 642 default 64 if HZ_64
>> 643 default 128 if HZ_128
>> 644 default 256 if HZ_256
>> 645 default 1200 if HZ_1200
>> 646 default 1024
>> 647
>> 648 config SRM_ENV
>> 649 tristate "SRM environment through procfs"
>> 650 depends on PROC_FS
>> 651 help
>> 652 If you enable this option, a subdirectory inside /proc called
>> 653 /proc/srm_environment will give you access to the all important
>> 654 SRM environment variables (those which have a name) and also
>> 655 to all others (by their internal number).
>> 656
>> 657 SRM is something like a BIOS for Alpha machines. There are some
>> 658 other such BIOSes, like AlphaBIOS, which this driver cannot
>> 659 support (hey, that's not SRM!).
>> 660
>> 661 Despite the fact that this driver doesn't work on all Alphas (but
>> 662 only on those which have SRM as their firmware), it's save to
>> 663 build it even if your particular machine doesn't know about SRM
>> 664 (or if you intend to compile a generic kernel). It will simply
>> 665 not create those subdirectory in /proc (and give you some warning,
>> 666 of course).
560 667
561 config ARCH_FORCE_MAX_ORDER !! 668 This driver is also available as a module and will be called
562 int "Maximum zone order" !! 669 srm_env then.
563 default "11" if ARC_HUGEPAGE_16M <<
564 default "10" <<
565 670
566 source "kernel/power/Kconfig" !! 671 endmenu
>> 672
>> 673 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
>> 674 # but we also need it if VGA_HOSE is set
>> 675 config DUMMY_CONSOLE
>> 676 bool
>> 677 depends on VGA_HOSE
>> 678 default y
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