1 # SPDX-License-Identifier: GPL-2.0 !! 1 # SPDX-License-Identifier: GPL-2.0-only
2 config XTENSA !! 2 config 64BIT
3 def_bool y !! 3 bool "64-bit kernel" if "$(ARCH)" = "sparc"
4 select ARCH_32BIT_OFF_T !! 4 default "$(ARCH)" = "sparc64"
5 select ARCH_HAS_CPU_CACHE_ALIASING !! 5 help
6 select ARCH_HAS_BINFMT_FLAT if !MMU !! 6 SPARC is a family of RISC microprocessors designed and marketed by
7 select ARCH_HAS_CURRENT_STACK_POINTER !! 7 Sun Microsystems, incorporated. They are very widely found in Sun
8 select ARCH_HAS_DEBUG_VM_PGTABLE !! 8 workstations and clones.
9 select ARCH_HAS_DMA_PREP_COHERENT if M !! 9
10 select ARCH_HAS_GCOV_PROFILE_ALL !! 10 Say yes to build a 64-bit kernel - formerly known as sparc64
11 select ARCH_HAS_KCOV !! 11 Say no to build a 32-bit kernel - formerly known as sparc
12 select ARCH_HAS_SYNC_DMA_FOR_CPU if MM !! 12
13 select ARCH_HAS_SYNC_DMA_FOR_DEVICE if !! 13 config SPARC
14 select ARCH_HAS_DMA_SET_UNCACHED if MM !! 14 bool
15 select ARCH_HAS_STRNCPY_FROM_USER if ! !! 15 default y
16 select ARCH_HAS_STRNLEN_USER !! 16 select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI
17 select ARCH_NEED_CMPXCHG_1_EMU !! 17 select ARCH_MIGHT_HAVE_PC_SERIO
18 select ARCH_USE_MEMTEST !! 18 select DMA_OPS
19 select ARCH_USE_QUEUED_RWLOCKS !! 19 select OF
20 select ARCH_USE_QUEUED_SPINLOCKS !! 20 select OF_PROMTREE
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 21 select HAVE_ASM_MODVERSIONS
41 select HAVE_CONTEXT_TRACKING_USER !! 22 select HAVE_ARCH_KGDB if !SMP || SPARC64
42 select HAVE_DEBUG_KMEMLEAK !! 23 select HAVE_ARCH_TRACEHOOK
43 select HAVE_DMA_CONTIGUOUS !! 24 select HAVE_ARCH_SECCOMP if SPARC64
44 select HAVE_EXIT_THREAD 25 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 26 select HAVE_PCI
51 select HAVE_PERF_EVENTS !! 27 select SYSCTL_EXCEPTION_TRACE
52 select HAVE_STACKPROTECTOR !! 28 select RTC_CLASS
53 select HAVE_SYSCALL_TRACEPOINTS !! 29 select RTC_DRV_M48T59
54 select HAVE_VIRT_CPU_ACCOUNTING_GEN !! 30 select RTC_SYSTOHC
55 select IRQ_DOMAIN !! 31 select HAVE_ARCH_JUMP_LABEL if SPARC64
56 select LOCK_MM_AND_FIND_VMA !! 32 select GENERIC_IRQ_SHOW
>> 33 select ARCH_WANT_IPC_PARSE_VERSION
>> 34 select GENERIC_PCI_IOMAP
>> 35 select HAVE_NMI_WATCHDOG if SPARC64
>> 36 select HAVE_CBPF_JIT if SPARC32
>> 37 select HAVE_EBPF_JIT if SPARC64
>> 38 select HAVE_DEBUG_BUGVERBOSE
>> 39 select GENERIC_SMP_IDLE_THREAD
57 select MODULES_USE_ELF_RELA 40 select MODULES_USE_ELF_RELA
58 select PERF_USE_VMALLOC !! 41 select PCI_SYSCALL if PCI
>> 42 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
>> 43 select ODD_RT_SIGACTION
>> 44 select OLD_SIGSUSPEND
>> 45 select CPU_NO_EFFICIENT_FFS
>> 46 select LOCKDEP_SMALL if LOCKDEP
>> 47 select NEED_DMA_MAP_STATE
>> 48 select NEED_SG_DMA_LENGTH
59 select TRACE_IRQFLAGS_SUPPORT 49 select TRACE_IRQFLAGS_SUPPORT
60 help <<
61 Xtensa processors are 32-bit RISC ma <<
62 primarily for embedded systems. The <<
63 configurable and extensible. The Li <<
64 architecture supports all processor <<
65 with reasonable minimum requirements <<
66 a home page at <http://www.linux-xte <<
67 <<
68 config GENERIC_HWEIGHT <<
69 def_bool y <<
70 <<
71 config ARCH_HAS_ILOG2_U32 <<
72 def_bool n <<
73 <<
74 config ARCH_HAS_ILOG2_U64 <<
75 def_bool n <<
76 <<
77 config ARCH_MTD_XIP <<
78 def_bool y <<
79 <<
80 config NO_IOPORT_MAP <<
81 def_bool n <<
82 50
83 config HZ !! 51 config SPARC32
84 int !! 52 def_bool !64BIT
85 default 100 !! 53 select ARCH_32BIT_OFF_T
>> 54 select ARCH_HAS_SYNC_DMA_FOR_CPU
>> 55 select CLZ_TAB
>> 56 select DMA_DIRECT_REMAP
>> 57 select GENERIC_ATOMIC64
>> 58 select HAVE_UID16
>> 59 select LOCK_MM_AND_FIND_VMA
>> 60 select OLD_SIGACTION
>> 61 select ZONE_DMA
86 62
87 config LOCKDEP_SUPPORT !! 63 config SPARC64
88 def_bool y !! 64 def_bool 64BIT
>> 65 select ALTERNATE_USER_ADDRESS_SPACE
>> 66 select HAVE_FUNCTION_TRACER
>> 67 select HAVE_FUNCTION_GRAPH_TRACER
>> 68 select HAVE_KRETPROBES
>> 69 select HAVE_KPROBES
>> 70 select MMU_GATHER_RCU_TABLE_FREE if SMP
>> 71 select MMU_GATHER_MERGE_VMAS
>> 72 select MMU_GATHER_NO_FLUSH_CACHE
>> 73 select HAVE_ARCH_TRANSPARENT_HUGEPAGE
>> 74 select HAVE_DYNAMIC_FTRACE
>> 75 select HAVE_FTRACE_MCOUNT_RECORD
>> 76 select HAVE_SYSCALL_TRACEPOINTS
>> 77 select HAVE_CONTEXT_TRACKING_USER
>> 78 select HAVE_TIF_NOHZ
>> 79 select HAVE_DEBUG_KMEMLEAK
>> 80 select IOMMU_HELPER
>> 81 select SPARSE_IRQ
>> 82 select RTC_DRV_CMOS
>> 83 select RTC_DRV_BQ4802
>> 84 select RTC_DRV_SUN4V
>> 85 select RTC_DRV_STARFIRE
>> 86 select HAVE_PERF_EVENTS
>> 87 select PERF_USE_VMALLOC
>> 88 select ARCH_HAVE_NMI_SAFE_CMPXCHG
>> 89 select HAVE_C_RECORDMCOUNT
>> 90 select HAVE_ARCH_AUDITSYSCALL
>> 91 select ARCH_SUPPORTS_ATOMIC_RMW
>> 92 select ARCH_SUPPORTS_DEBUG_PAGEALLOC
>> 93 select HAVE_NMI
>> 94 select HAVE_REGS_AND_STACK_ACCESS_API
>> 95 select ARCH_USE_QUEUED_RWLOCKS
>> 96 select ARCH_USE_QUEUED_SPINLOCKS
>> 97 select GENERIC_TIME_VSYSCALL
>> 98 select ARCH_CLOCKSOURCE_DATA
>> 99 select ARCH_HAS_PTE_SPECIAL
>> 100 select PCI_DOMAINS if PCI
>> 101 select ARCH_HAS_GIGANTIC_PAGE
>> 102 select HAVE_SOFTIRQ_ON_OWN_STACK
>> 103 select HAVE_SETUP_PER_CPU_AREA
>> 104 select NEED_PER_CPU_EMBED_FIRST_CHUNK
>> 105 select NEED_PER_CPU_PAGE_FIRST_CHUNK
89 106
90 config STACKTRACE_SUPPORT !! 107 config ARCH_PROC_KCORE_TEXT
91 def_bool y 108 def_bool y
92 109
93 config MMU <<
94 def_bool n <<
95 select PFAULT <<
96 <<
97 config HAVE_XTENSA_GPIO32 <<
98 def_bool n <<
99 <<
100 config KASAN_SHADOW_OFFSET <<
101 hex <<
102 default 0x6e400000 <<
103 <<
104 config CPU_BIG_ENDIAN 110 config CPU_BIG_ENDIAN
105 def_bool $(success,test "$(shell,echo !! 111 def_bool y
106 <<
107 config CPU_LITTLE_ENDIAN <<
108 def_bool !CPU_BIG_ENDIAN <<
109 <<
110 config CC_HAVE_CALL0_ABI <<
111 def_bool $(success,test "$(shell,echo <<
112 112
113 menu "Processor type and features" !! 113 config ARCH_ATU
>> 114 bool
>> 115 default y if SPARC64
114 116
115 choice !! 117 config STACKTRACE_SUPPORT
116 prompt "Xtensa Processor Configuration !! 118 bool
117 default XTENSA_VARIANT_FSF !! 119 default y if SPARC64
118 <<
119 config XTENSA_VARIANT_FSF <<
120 bool "fsf - default (not generic) conf <<
121 select MMU <<
122 <<
123 config XTENSA_VARIANT_DC232B <<
124 bool "dc232b - Diamond 232L Standard C <<
125 select MMU <<
126 select HAVE_XTENSA_GPIO32 <<
127 help <<
128 This variant refers to Tensilica's D <<
129 <<
130 config XTENSA_VARIANT_DC233C <<
131 bool "dc233c - Diamond 233L Standard C <<
132 select MMU <<
133 select HAVE_XTENSA_GPIO32 <<
134 help <<
135 This variant refers to Tensilica's D <<
136 <<
137 config XTENSA_VARIANT_CUSTOM <<
138 bool "Custom Xtensa processor configur <<
139 select HAVE_XTENSA_GPIO32 <<
140 help <<
141 Select this variant to use a custom <<
142 You will be prompted for a processor <<
143 endchoice <<
144 <<
145 config XTENSA_VARIANT_CUSTOM_NAME <<
146 string "Xtensa Processor Custom Core V <<
147 depends on XTENSA_VARIANT_CUSTOM <<
148 help <<
149 Provide the name of a custom Xtensa <<
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 <<
174 Enable if core variant has Performan <<
175 External Registers Interface. <<
176 120
177 If unsure, say N. !! 121 config LOCKDEP_SUPPORT
>> 122 bool
>> 123 default y if SPARC64
178 124
179 config XTENSA_FAKE_NMI !! 125 config ARCH_HIBERNATION_POSSIBLE
180 bool "Treat PMM IRQ as NMI" !! 126 def_bool y if SPARC64
181 depends on XTENSA_VARIANT_HAVE_PERF_EV <<
182 default n <<
183 help <<
184 If PMM IRQ is the only IRQ at EXCM l <<
185 treat it as NMI, which improves accu <<
186 <<
187 If there are other interrupts at or <<
188 but not above the EXCM level, PMM IR <<
189 but only if these IRQs are not used. <<
190 saying that this is not safe, and a <<
191 actually fire. <<
192 127
193 If unsure, say N. !! 128 config AUDIT_ARCH
>> 129 bool
>> 130 default y
194 131
195 config PFAULT !! 132 config MMU
196 bool "Handle protection faults" if EXP !! 133 bool
197 default y 134 default y
198 help <<
199 Handle protection faults. MMU config <<
200 noMMU configurations may disable it <<
201 generates protection faults or fault <<
202 135
203 If unsure, say Y. !! 136 config HIGHMEM
>> 137 bool
>> 138 default y if SPARC32
>> 139 select KMAP_LOCAL
204 140
205 config XTENSA_UNALIGNED_USER !! 141 config GENERIC_ISA_DMA
206 bool "Unaligned memory access in user !! 142 bool
207 help !! 143 default y if SPARC32
208 The Xtensa architecture currently do <<
209 memory accesses in hardware but thro <<
210 Per default, unaligned memory access <<
211 144
212 Say Y here to enable unaligned memor !! 145 config PGTABLE_LEVELS
>> 146 default 4 if 64BIT
>> 147 default 3
213 148
214 config XTENSA_LOAD_STORE !! 149 config ARCH_SUPPORTS_UPROBES
215 bool "Load/store exception handler for !! 150 def_bool y if SPARC64
216 help <<
217 The Xtensa architecture only allows <<
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 <<
222 151
223 Say Y here to enable exception handl !! 152 menu "Processor type and features"
224 byte and 2-byte access to memory att <<
225 153
226 config HAVE_SMP !! 154 config SMP
227 bool "System Supports SMP (MX)" !! 155 bool "Symmetric multi-processing support"
228 depends on XTENSA_VARIANT_CUSTOM <<
229 select XTENSA_MX <<
230 help 156 help
231 This option is used to indicate that !! 157 This enables support for systems with more than one CPU. If you have
232 supports Multiprocessing. Multiproce !! 158 a system with only one CPU, say N. If you have a system with more
233 the CPU core definition and currentl !! 159 than one CPU, say Y.
>> 160
>> 161 If you say N here, the kernel will run on uni- and multiprocessor
>> 162 machines, but will use only one CPU of a multiprocessor machine. If
>> 163 you say Y here, the kernel will run on many, but not all,
>> 164 uniprocessor machines. On a uniprocessor machine, the kernel
>> 165 will run faster if you say N here.
>> 166
>> 167 People using multiprocessor machines who say Y here should also say
>> 168 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
>> 169 Management" code will be disabled if you say Y here.
234 170
235 Multiprocessor support is implemente !! 171 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
236 interrupt controllers. !! 172 available at <https://www.tldp.org/docs.html#howto>.
237 173
238 The MX interrupt distributer adds In !! 174 If you don't know what to do here, say N.
239 and causes the IRQ numbers to be inc <<
240 like the open cores ethernet driver <<
241 <<
242 You still have to select "Enable SMP <<
243 <<
244 config SMP <<
245 bool "Enable Symmetric multi-processin <<
246 depends on HAVE_SMP <<
247 select GENERIC_SMP_IDLE_THREAD <<
248 help <<
249 Enabled SMP Software; allows more th <<
250 to be activated during startup. <<
251 175
252 config NR_CPUS 176 config NR_CPUS
>> 177 int "Maximum number of CPUs"
253 depends on SMP 178 depends on SMP
254 int "Maximum number of CPUs (2-32)" !! 179 range 2 32 if SPARC32
255 range 2 32 !! 180 range 2 4096 if SPARC64
256 default "4" !! 181 default 32 if SPARC32
257 !! 182 default 4096 if SPARC64
258 config HOTPLUG_CPU <<
259 bool "Enable CPU hotplug support" <<
260 depends on SMP <<
261 help <<
262 Say Y here to allow turning CPUs off <<
263 controlled through /sys/devices/syst <<
264 183
265 Say N if you want to disable CPU hot !! 184 source "kernel/Kconfig.hz"
266 185
267 config SECONDARY_RESET_VECTOR !! 186 config GENERIC_HWEIGHT
268 bool "Secondary cores use alternative !! 187 bool
269 default y 188 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 <<
276 config FAST_SYSCALL_XTENSA <<
277 bool "Enable fast atomic syscalls" <<
278 default n <<
279 help <<
280 fast_syscall_xtensa is a syscall tha <<
281 on UP kernel when processor has no s <<
282 189
283 This syscall is deprecated. It may h !! 190 config GENERIC_CALIBRATE_DELAY
284 invalid arguments. It is provided on !! 191 bool
285 Only enable it if your userspace sof !! 192 default y
286 <<
287 If unsure, say N. <<
288 <<
289 config FAST_SYSCALL_SPILL_REGISTERS <<
290 bool "Enable spill registers syscall" <<
291 default n <<
292 help <<
293 fast_syscall_spill_registers is a sy <<
294 register windows of a calling usersp <<
295 <<
296 This syscall is deprecated. It may h <<
297 invalid arguments. It is provided on <<
298 Only enable it if your userspace sof <<
299 <<
300 If unsure, say N. <<
301 <<
302 choice <<
303 prompt "Kernel ABI" <<
304 default KERNEL_ABI_DEFAULT <<
305 help <<
306 Select ABI for the kernel code. This <<
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. <<
315 193
316 config KERNEL_ABI_DEFAULT !! 194 config ARCH_MAY_HAVE_PC_FDC
317 bool "Default ABI" !! 195 bool
318 help !! 196 default y
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. <<
323 197
324 config KERNEL_ABI_CALL0 !! 198 config EMULATED_CMPXCHG
325 bool "Call0 ABI" if CC_HAVE_CALL0_ABI !! 199 bool
>> 200 default y if SPARC32
326 help 201 help
327 Select this option to compile kernel !! 202 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
328 toolchain that defaults to windowed !! 203 is emulated, and therefore it is not completely atomic.
329 When this option is not selected the <<
330 be used for the kernel code. <<
331 <<
332 endchoice <<
333 204
334 config USER_ABI_CALL0 !! 205 # Makefile helpers
>> 206 config SPARC32_SMP
335 bool 207 bool
>> 208 default y
>> 209 depends on SPARC32 && SMP
336 210
337 choice !! 211 config SPARC64_SMP
338 prompt "Userspace ABI" !! 212 bool
339 default USER_ABI_DEFAULT !! 213 default y
340 help !! 214 depends on SPARC64 && SMP
341 Select supported userspace ABI. <<
342 <<
343 If unsure, choose the default ABI. <<
344 215
345 config USER_ABI_DEFAULT !! 216 config EARLYFB
346 bool "Default ABI only" !! 217 bool "Support for early boot text console"
>> 218 default y
>> 219 depends on SPARC64
347 help 220 help
348 Assume default userspace ABI. For XE !! 221 Say Y here to enable a faster early framebuffer boot console.
349 call0 ABI binaries may be run on suc <<
350 will not work correctly for them. <<
351 222
352 config USER_ABI_CALL0_ONLY !! 223 config HOTPLUG_CPU
353 bool "Call0 ABI only" !! 224 bool "Support for hot-pluggable CPUs"
354 select USER_ABI_CALL0 !! 225 depends on SPARC64 && SMP
355 help 226 help
356 Select this option to support only c !! 227 Say Y here to experiment with turning CPUs off and on. CPUs
357 Windowed ABI binaries will crash wit !! 228 can be controlled through /sys/devices/system/cpu/cpu#.
358 an illegal instruction exception on !! 229 Say N if you want to disable CPU hotplug.
359 <<
360 Choose this option if you're plannin <<
361 built with call0 ABI. <<
362 230
363 config USER_ABI_CALL0_PROBE !! 231 if SPARC64
364 bool "Support both windowed and call0 !! 232 source "drivers/cpufreq/Kconfig"
365 select USER_ABI_CALL0 !! 233 endif
>> 234
>> 235 config US3_MC
>> 236 tristate "UltraSPARC-III Memory Controller driver"
>> 237 depends on SPARC64
>> 238 default y
366 help 239 help
367 Select this option to support both w !! 240 This adds a driver for the UltraSPARC-III memory controller.
368 ABIs. When enabled all processes are !! 241 Loading this driver allows exact mnemonic strings to be
369 and a fast user exception handler fo !! 242 printed in the event of a memory error, so that the faulty DIMM
370 used to turn on PS.WOE bit on the fi !! 243 on the motherboard can be matched to the error.
371 the userspace. <<
372 244
373 This option should be enabled for th !! 245 If in doubt, say Y, as this information can be very useful.
374 both call0 and windowed ABIs in user <<
375 246
376 Note that Xtensa ISA does not guaran !! 247 # Global things across all Sun machines.
377 raise an illegal instruction excepti !! 248 config GENERIC_LOCKBREAK
378 PS.WOE is disabled, check whether th !! 249 bool
>> 250 default y
>> 251 depends on SPARC64 && SMP && PREEMPTION
379 252
380 endchoice !! 253 config NUMA
>> 254 bool "NUMA support"
>> 255 depends on SPARC64 && SMP
>> 256
>> 257 config NODES_SHIFT
>> 258 int "Maximum NUMA Nodes (as a power of 2)"
>> 259 range 4 5 if SPARC64
>> 260 default "5"
>> 261 depends on NUMA
>> 262 help
>> 263 Specify the maximum number of NUMA Nodes available on the target
>> 264 system. Increases memory reserved to accommodate various tables.
>> 265
>> 266 config ARCH_SPARSEMEM_ENABLE
>> 267 def_bool y if SPARC64
>> 268 select SPARSEMEM_VMEMMAP_ENABLE
381 269
382 endmenu !! 270 config ARCH_SPARSEMEM_DEFAULT
>> 271 def_bool y if SPARC64
383 272
384 config XTENSA_CALIBRATE_CCOUNT !! 273 config ARCH_FORCE_MAX_ORDER
385 def_bool n !! 274 int "Maximum zone order"
>> 275 default "13"
386 help 276 help
387 On some platforms (XT2000, for examp !! 277 The kernel memory allocator divides physically contiguous memory
388 vary. The frequency can be determin !! 278 blocks into "zones", where each zone is a power of two number of
389 against a well known, fixed frequenc !! 279 pages. This option selects the largest power of two that the kernel
390 !! 280 keeps in the memory allocator. If you need to allocate very large
391 config SERIAL_CONSOLE !! 281 blocks of physically contiguous memory, then you may need to
392 def_bool n !! 282 increase this value.
393 <<
394 config PLATFORM_HAVE_XIP <<
395 def_bool n <<
396 <<
397 menu "Platform options" <<
398 <<
399 choice <<
400 prompt "Xtensa System Type" <<
401 default XTENSA_PLATFORM_ISS <<
402 283
403 config XTENSA_PLATFORM_ISS !! 284 This config option is actually maximum order plus one. For example,
404 bool "ISS" !! 285 a value of 13 means that the largest free memory block is 2^12 pages.
405 select XTENSA_CALIBRATE_CCOUNT <<
406 select SERIAL_CONSOLE <<
407 help <<
408 ISS is an acronym for Tensilica's In <<
409 286
410 config XTENSA_PLATFORM_XT2000 !! 287 if SPARC64 || COMPILE_TEST
411 bool "XT2000" !! 288 source "kernel/power/Kconfig"
412 help !! 289 endif
413 XT2000 is the name of Tensilica's fe <<
414 This hardware is capable of running <<
415 290
416 config XTENSA_PLATFORM_XTFPGA !! 291 config SCHED_SMT
417 bool "XTFPGA" !! 292 bool "SMT (Hyperthreading) scheduler support"
418 select ETHOC if ETHERNET !! 293 depends on SPARC64 && SMP
419 select PLATFORM_WANT_DEFAULT_MEM if !M !! 294 default y
420 select SERIAL_CONSOLE <<
421 select XTENSA_CALIBRATE_CCOUNT <<
422 select PLATFORM_HAVE_XIP <<
423 help 295 help
424 XTFPGA is the name of Tensilica boar !! 296 SMT scheduler support improves the CPU scheduler's decision making
425 This hardware is capable of running !! 297 when dealing with SPARC cpus at a cost of slightly increased overhead
426 !! 298 in some places. If unsure say N here.
427 endchoice !! 299
428 !! 300 config SCHED_MC
429 config PLATFORM_NR_IRQS !! 301 bool "Multi-core scheduler support"
430 int !! 302 depends on SPARC64 && SMP
431 default 3 if XTENSA_PLATFORM_XT2000 !! 303 default y
432 default 0 <<
433 <<
434 config XTENSA_CPU_CLOCK <<
435 int "CPU clock rate [MHz]" <<
436 depends on !XTENSA_CALIBRATE_CCOUNT <<
437 default 16 <<
438 <<
439 config GENERIC_CALIBRATE_DELAY <<
440 bool "Auto calibration of the BogoMIPS <<
441 help 304 help
442 The BogoMIPS value can easily be der !! 305 Multi-core scheduler support improves the CPU scheduler's decision
>> 306 making when dealing with multi-core CPU chips at a cost of slightly
>> 307 increased overhead in some places. If unsure say N here.
443 308
444 config CMDLINE_BOOL 309 config CMDLINE_BOOL
445 bool "Default bootloader kernel argume 310 bool "Default bootloader kernel arguments"
>> 311 depends on SPARC64
446 312
447 config CMDLINE 313 config CMDLINE
448 string "Initial kernel command string" 314 string "Initial kernel command string"
449 depends on CMDLINE_BOOL 315 depends on CMDLINE_BOOL
450 default "console=ttyS0,38400 root=/dev !! 316 default "console=ttyS0,9600 root=/dev/sda1"
451 help 317 help
452 On some architectures (EBSA110 and C !! 318 Say Y here if you want to be able to pass default arguments to
453 for the boot loader to pass argument !! 319 the kernel. This will be overridden by the bootloader, if you
454 architectures, you should supply som !! 320 use one (such as SILO). This is most useful if you want to boot
455 time by entering them here. As a min !! 321 a kernel from TFTP, and want default options to be available
456 memory size and the root device (e.g !! 322 with having them passed on the command line.
457 323
458 config USE_OF !! 324 NOTE: This option WILL override the PROM bootargs setting!
459 bool "Flattened Device Tree support" <<
460 select OF <<
461 select OF_EARLY_FLATTREE <<
462 help <<
463 Include support for flattened device <<
464 325
465 config BUILTIN_DTB_SOURCE !! 326 config SUN_PM
466 string "DTB to build into the kernel i !! 327 bool
467 depends on OF !! 328 default y if SPARC32
468 <<
469 config PARSE_BOOTPARAM <<
470 bool "Parse bootparam block" <<
471 default y <<
472 help 329 help
473 Parse parameters passed to the kerne !! 330 Enable power management and CPU standby features on supported
474 be disabled if the kernel is known t !! 331 SPARC platforms.
475 332
476 If unsure, say Y. !! 333 config SPARC_LED
>> 334 tristate "Sun4m LED driver"
>> 335 depends on SPARC32
>> 336 help
>> 337 This driver toggles the front-panel LED on sun4m systems
>> 338 in a user-specifiable manner. Its state can be probed
>> 339 by reading /proc/led and its blinking mode can be changed
>> 340 via writes to /proc/led
477 341
478 choice !! 342 config SERIAL_CONSOLE
479 prompt "Semihosting interface" !! 343 bool
480 default XTENSA_SIMCALL_ISS !! 344 depends on SPARC32
481 depends on XTENSA_PLATFORM_ISS !! 345 default y
482 help 346 help
483 Choose semihosting interface that wi !! 347 If you say Y here, it will be possible to use a serial port as the
484 block device and networking. !! 348 system console (the system console is the device which receives all
>> 349 kernel messages and warnings and which allows logins in single user
>> 350 mode). This could be useful if some terminal or printer is connected
>> 351 to that serial port.
>> 352
>> 353 Even if you say Y here, the currently visible virtual console
>> 354 (/dev/tty0) will still be used as the system console by default, but
>> 355 you can alter that using a kernel command line option such as
>> 356 "console=ttyS1". (Try "man bootparam" or see the documentation of
>> 357 your boot loader (silo) about how to pass options to the kernel at
>> 358 boot time.)
>> 359
>> 360 If you don't have a graphics card installed and you say Y here, the
>> 361 kernel will automatically use the first serial line, /dev/ttyS0, as
>> 362 system console.
485 363
486 config XTENSA_SIMCALL_ISS !! 364 If unsure, say N.
487 bool "simcall" <<
488 help <<
489 Use simcall instruction. simcall is <<
490 it does nothing on hardware. <<
491 365
492 config XTENSA_SIMCALL_GDBIO !! 366 config SPARC_LEON
493 bool "GDBIO" !! 367 bool "Sparc Leon processor family"
>> 368 depends on SPARC32
>> 369 select USB_EHCI_BIG_ENDIAN_MMIO
>> 370 select USB_EHCI_BIG_ENDIAN_DESC
>> 371 select USB_UHCI_BIG_ENDIAN_MMIO
>> 372 select USB_UHCI_BIG_ENDIAN_DESC
>> 373 help
>> 374 If you say Y here if you are running on a SPARC-LEON processor.
>> 375 The LEON processor is a synthesizable VHDL model of the
>> 376 SPARC-v8 standard. LEON is part of the GRLIB collection of
>> 377 IP cores that are distributed under GPL. GRLIB can be downloaded
>> 378 from www.gaisler.com. You can download a sparc-linux cross-compilation
>> 379 toolchain at www.gaisler.com.
>> 380
>> 381 if SPARC_LEON
>> 382 menu "U-Boot options"
>> 383
>> 384 config UBOOT_LOAD_ADDR
>> 385 hex "uImage Load Address"
>> 386 default 0x40004000
>> 387 help
>> 388 U-Boot kernel load address, the address in physical address space
>> 389 where u-boot will place the Linux kernel before booting it.
>> 390 This address is normally the base address of main memory + 0x4000.
>> 391
>> 392 config UBOOT_FLASH_ADDR
>> 393 hex "uImage.o Load Address"
>> 394 default 0x00080000
>> 395 help
>> 396 Optional setting only affecting the uImage.o ELF-image used to
>> 397 download the uImage file to the target using a ELF-loader other than
>> 398 U-Boot. It may for example be used to download an uImage to FLASH with
>> 399 the GRMON utility before even starting u-boot.
>> 400
>> 401 config UBOOT_ENTRY_ADDR
>> 402 hex "uImage Entry Address"
>> 403 default 0xf0004000
494 help 404 help
495 Use break instruction. It is availab !! 405 Do not change this unless you know what you're doing. This is
496 is attached to it via JTAG. !! 406 hardcoded by the SPARC32 and LEON port.
497 407
498 endchoice !! 408 This is the virtual address u-boot jumps to when booting the Linux
>> 409 Kernel.
499 410
500 config BLK_DEV_SIMDISK !! 411 endmenu
501 tristate "Host file-based simulated bl !! 412 endif
502 default n <<
503 depends on XTENSA_PLATFORM_ISS && BLOC <<
504 help <<
505 Create block devices that map to fil <<
506 Device binding to host file may be c <<
507 interface provided the device is not <<
508 413
509 config BLK_DEV_SIMDISK_COUNT !! 414 endmenu
510 int "Number of host file-based simulat <<
511 range 1 10 <<
512 depends on BLK_DEV_SIMDISK <<
513 default 2 <<
514 help <<
515 This is the default minimal number o <<
516 Kernel/module parameter 'simdisk_cou <<
517 value at runtime. More file names (b <<
518 specified as parameters, simdisk_cou <<
519 415
520 config SIMDISK0_FILENAME !! 416 menu "Bus options (PCI etc.)"
521 string "Host filename for the first si !! 417 config SBUS
522 depends on BLK_DEV_SIMDISK = y !! 418 bool
523 default "" !! 419 default y
524 help <<
525 Attach a first simdisk to a host fil <<
526 contains a root file system. <<
527 420
528 config SIMDISK1_FILENAME !! 421 config SBUSCHAR
529 string "Host filename for the second s !! 422 bool
530 depends on BLK_DEV_SIMDISK = y && BLK_ !! 423 default y
531 default "" <<
532 help <<
533 Another simulated disk in a host fil <<
534 storage. <<
535 424
536 config XTFPGA_LCD !! 425 config SUN_LDOMS
537 bool "Enable XTFPGA LCD driver" !! 426 bool "Sun Logical Domains support"
538 depends on XTENSA_PLATFORM_XTFPGA !! 427 depends on SPARC64
539 default n <<
540 help 428 help
541 There's a 2x16 LCD on most of XTFPGA !! 429 Say Y here is you want to support virtual devices via
542 progress messages there during bootu !! 430 Logical Domains.
543 during board bringup. <<
544 431
545 If unsure, say N. !! 432 config PCIC_PCI
546 !! 433 bool
547 config XTFPGA_LCD_BASE_ADDR !! 434 depends on PCI && SPARC32 && !SPARC_LEON
548 hex "XTFPGA LCD base address" !! 435 default 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 <<
617 If unsure, say N. <<
618 <<
619 config MEMMAP_CACHEATTR <<
620 hex "Cache attributes for the memory a <<
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 <<
683 If unsure, leave the default value h <<
684 <<
685 choice <<
686 prompt "Relocatable vectors location" <<
687 default XTENSA_VECTORS_IN_TEXT <<
688 help <<
689 Choose whether relocatable vectors a <<
690 or placed separately at runtime. Thi <<
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 <<
713 config VECTORS_ADDR <<
714 hex "Kernel vectors virtual address" <<
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 <<
738 This is the base address used for bo <<
739 in noMMU configurations. <<
740 <<
741 If unsure, leave the default value h <<
742 <<
743 choice <<
744 prompt "KSEG layout" <<
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. <<
771 436
772 endchoice !! 437 config LEON_PCI
>> 438 bool
>> 439 depends on PCI && SPARC_LEON
>> 440 default y
773 441
774 config HIGHMEM !! 442 config SPARC_GRPCI1
775 bool "High Memory Support" !! 443 bool "GRPCI Host Bridge Support"
776 depends on MMU !! 444 depends on LEON_PCI
777 select KMAP_LOCAL !! 445 default y
778 help 446 help
779 Linux can use the full amount of RAM !! 447 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
780 default. However, the default MMUv2 !! 448 PCI host controller is typically found in GRLIB SPARC32/LEON
781 lowermost 128 MB of memory linearly !! 449 systems. The driver has one property (all_pci_errors) controlled
782 at 0xd0000000 (cached) and 0xd800000 !! 450 from the bootloader that makes the GRPCI to generate interrupts
783 When there are more than 128 MB memo !! 451 on detected PCI Parity and System errors.
784 all of it can be "permanently mapped !! 452
785 The physical memory that's not perma !! 453 config SPARC_GRPCI2
786 "high memory". !! 454 bool "GRPCI2 Host Bridge Support"
787 !! 455 depends on LEON_PCI
788 If you are compiling a kernel which !! 456 default y
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 457 help
798 The kernel page allocator limits the !! 458 Say Y here to include the GRPCI2 Host Bridge Driver.
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 <<
804 459
805 Don't change if unsure. !! 460 config SUN_OPENPROMFS
>> 461 tristate "Openprom tree appears in /proc/openprom"
>> 462 help
>> 463 If you say Y, the OpenPROM device tree will be available as a
>> 464 virtual file system, which you can mount to /proc/openprom by "mount
>> 465 -t openpromfs none /proc/openprom".
806 466
807 endmenu !! 467 To compile the /proc/openprom support as a module, choose M here: the
>> 468 module will be called openpromfs.
808 469
809 menu "Power management options" !! 470 Only choose N if you know in advance that you will not need to modify
>> 471 OpenPROM settings on the running system.
810 472
811 config ARCH_HIBERNATION_POSSIBLE !! 473 # Makefile helpers
812 def_bool y !! 474 config SPARC64_PCI
>> 475 bool
>> 476 default y
>> 477 depends on SPARC64 && PCI
813 478
814 source "kernel/power/Kconfig" !! 479 config SPARC64_PCI_MSI
>> 480 bool
>> 481 default y
>> 482 depends on SPARC64_PCI && PCI_MSI
815 483
816 endmenu 484 endmenu
>> 485
>> 486 config COMPAT
>> 487 bool
>> 488 depends on SPARC64
>> 489 default y
>> 490 select HAVE_UID16
>> 491 select ARCH_WANT_OLD_COMPAT_IPC
>> 492 select COMPAT_OLD_SIGACTION
>> 493
>> 494 source "drivers/sbus/char/Kconfig"
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