1 # SPDX-License-Identifier: GPL-2.0-only 1 # SPDX-License-Identifier: GPL-2.0-only
2 config CSKY !! 2 config 64BIT
3 def_bool y !! 3 bool "64-bit kernel" if "$(ARCH)" = "sparc"
>> 4 default "$(ARCH)" = "sparc64"
>> 5 help
>> 6 SPARC is a family of RISC microprocessors designed and marketed by
>> 7 Sun Microsystems, incorporated. They are very widely found in Sun
>> 8 workstations and clones.
>> 9
>> 10 Say yes to build a 64-bit kernel - formerly known as sparc64
>> 11 Say no to build a 32-bit kernel - formerly known as sparc
>> 12
>> 13 config SPARC
>> 14 bool
>> 15 default y
>> 16 select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI
>> 17 select ARCH_MIGHT_HAVE_PC_SERIO
>> 18 select DMA_OPS
>> 19 select OF
>> 20 select OF_PROMTREE
>> 21 select HAVE_ASM_MODVERSIONS
>> 22 select HAVE_IDE
>> 23 select HAVE_OPROFILE
>> 24 select HAVE_ARCH_KGDB if !SMP || SPARC64
>> 25 select HAVE_ARCH_TRACEHOOK
>> 26 select HAVE_ARCH_SECCOMP if SPARC64
>> 27 select HAVE_EXIT_THREAD
>> 28 select HAVE_PCI
>> 29 select SYSCTL_EXCEPTION_TRACE
>> 30 select RTC_CLASS
>> 31 select RTC_DRV_M48T59
>> 32 select RTC_SYSTOHC
>> 33 select HAVE_ARCH_JUMP_LABEL if SPARC64
>> 34 select GENERIC_IRQ_SHOW
>> 35 select ARCH_WANT_IPC_PARSE_VERSION
>> 36 select GENERIC_PCI_IOMAP
>> 37 select HAVE_NMI_WATCHDOG if SPARC64
>> 38 select HAVE_CBPF_JIT if SPARC32
>> 39 select HAVE_EBPF_JIT if SPARC64
>> 40 select HAVE_DEBUG_BUGVERBOSE
>> 41 select GENERIC_SMP_IDLE_THREAD
>> 42 select GENERIC_STRNCPY_FROM_USER
>> 43 select GENERIC_STRNLEN_USER
>> 44 select MODULES_USE_ELF_RELA
>> 45 select PCI_SYSCALL if PCI
>> 46 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
>> 47 select ODD_RT_SIGACTION
>> 48 select OLD_SIGSUSPEND
>> 49 select CPU_NO_EFFICIENT_FFS
>> 50 select LOCKDEP_SMALL if LOCKDEP
>> 51 select NEED_DMA_MAP_STATE
>> 52 select NEED_SG_DMA_LENGTH
>> 53 select SET_FS
>> 54
>> 55 config SPARC32
>> 56 def_bool !64BIT
4 select ARCH_32BIT_OFF_T 57 select ARCH_32BIT_OFF_T
5 select ARCH_HAS_CPU_CACHE_ALIASING <<
6 select ARCH_HAS_DMA_PREP_COHERENT <<
7 select ARCH_HAS_GCOV_PROFILE_ALL <<
8 select ARCH_HAS_SYNC_DMA_FOR_CPU 58 select ARCH_HAS_SYNC_DMA_FOR_CPU
9 select ARCH_HAS_SYNC_DMA_FOR_DEVICE <<
10 select ARCH_USE_BUILTIN_BSWAP <<
11 select ARCH_USE_QUEUED_RWLOCKS <<
12 select ARCH_USE_QUEUED_SPINLOCKS <<
13 select ARCH_HAS_CURRENT_STACK_POINTER <<
14 select ARCH_INLINE_READ_LOCK if !PREEM <<
15 select ARCH_INLINE_READ_LOCK_BH if !PR <<
16 select ARCH_INLINE_READ_LOCK_IRQ if !P <<
17 select ARCH_INLINE_READ_LOCK_IRQSAVE i <<
18 select ARCH_INLINE_READ_UNLOCK if !PRE <<
19 select ARCH_INLINE_READ_UNLOCK_BH if ! <<
20 select ARCH_INLINE_READ_UNLOCK_IRQ if <<
21 select ARCH_INLINE_READ_UNLOCK_IRQREST <<
22 select ARCH_INLINE_WRITE_LOCK if !PREE <<
23 select ARCH_INLINE_WRITE_LOCK_BH if !P <<
24 select ARCH_INLINE_WRITE_LOCK_IRQ if ! <<
25 select ARCH_INLINE_WRITE_LOCK_IRQSAVE <<
26 select ARCH_INLINE_WRITE_UNLOCK if !PR <<
27 select ARCH_INLINE_WRITE_UNLOCK_BH if <<
28 select ARCH_INLINE_WRITE_UNLOCK_IRQ if <<
29 select ARCH_INLINE_WRITE_UNLOCK_IRQRES <<
30 select ARCH_INLINE_SPIN_TRYLOCK if !PR <<
31 select ARCH_INLINE_SPIN_TRYLOCK_BH if <<
32 select ARCH_INLINE_SPIN_LOCK if !PREEM <<
33 select ARCH_INLINE_SPIN_LOCK_BH if !PR <<
34 select ARCH_INLINE_SPIN_LOCK_IRQ if !P <<
35 select ARCH_INLINE_SPIN_LOCK_IRQSAVE i <<
36 select ARCH_INLINE_SPIN_UNLOCK if !PRE <<
37 select ARCH_INLINE_SPIN_UNLOCK_BH if ! <<
38 select ARCH_INLINE_SPIN_UNLOCK_IRQ if <<
39 select ARCH_INLINE_SPIN_UNLOCK_IRQREST <<
40 select ARCH_NEED_CMPXCHG_1_EMU <<
41 select ARCH_WANT_FRAME_POINTERS if !CP <<
42 select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_ <<
43 select COMMON_CLK <<
44 select CLKSRC_MMIO <<
45 select CSKY_MPINTC if CPU_CK860 <<
46 select CSKY_MP_TIMER if CPU_CK860 <<
47 select CSKY_APB_INTC <<
48 select DMA_DIRECT_REMAP <<
49 select IRQ_DOMAIN <<
50 select DW_APB_TIMER_OF <<
51 select GENERIC_IOREMAP <<
52 select GENERIC_LIB_ASHLDI3 <<
53 select GENERIC_LIB_ASHRDI3 <<
54 select GENERIC_LIB_LSHRDI3 <<
55 select GENERIC_LIB_MULDI3 <<
56 select GENERIC_LIB_CMPDI2 <<
57 select GENERIC_LIB_UCMPDI2 <<
58 select GENERIC_ALLOCATOR <<
59 select GENERIC_ATOMIC64 59 select GENERIC_ATOMIC64
60 select GENERIC_CPU_DEVICES !! 60 select CLZ_TAB
61 select GENERIC_IRQ_CHIP !! 61 select HAVE_UID16
62 select GENERIC_IRQ_PROBE !! 62 select OLD_SIGACTION
63 select GENERIC_IRQ_SHOW !! 63
64 select GENERIC_IRQ_MULTI_HANDLER !! 64 config SPARC64
65 select GENERIC_SCHED_CLOCK !! 65 def_bool 64BIT
66 select GENERIC_SMP_IDLE_THREAD <<
67 select GENERIC_TIME_VSYSCALL <<
68 select GENERIC_VDSO_32 <<
69 select GENERIC_GETTIMEOFDAY <<
70 select GX6605S_TIMER if CPU_CK610 <<
71 select HAVE_ARCH_TRACEHOOK <<
72 select HAVE_ARCH_AUDITSYSCALL <<
73 select HAVE_ARCH_JUMP_LABEL if !CPU_CK <<
74 select HAVE_ARCH_JUMP_LABEL_RELATIVE <<
75 select HAVE_ARCH_MMAP_RND_BITS <<
76 select HAVE_ARCH_SECCOMP_FILTER <<
77 select HAVE_CONTEXT_TRACKING_USER <<
78 select HAVE_VIRT_CPU_ACCOUNTING_GEN <<
79 select HAVE_DEBUG_BUGVERBOSE <<
80 select HAVE_DEBUG_KMEMLEAK <<
81 select HAVE_DYNAMIC_FTRACE <<
82 select HAVE_DYNAMIC_FTRACE_WITH_REGS <<
83 select HAVE_GENERIC_VDSO <<
84 select HAVE_FUNCTION_TRACER 66 select HAVE_FUNCTION_TRACER
85 select HAVE_FUNCTION_GRAPH_TRACER 67 select HAVE_FUNCTION_GRAPH_TRACER
86 select HAVE_FUNCTION_ERROR_INJECTION !! 68 select HAVE_KRETPROBES
>> 69 select HAVE_KPROBES
>> 70 select MMU_GATHER_RCU_TABLE_FREE if SMP
>> 71 select HAVE_ARCH_TRANSPARENT_HUGEPAGE
>> 72 select HAVE_DYNAMIC_FTRACE
87 select HAVE_FTRACE_MCOUNT_RECORD 73 select HAVE_FTRACE_MCOUNT_RECORD
88 select HAVE_KERNEL_GZIP !! 74 select HAVE_SYSCALL_TRACEPOINTS
89 select HAVE_KERNEL_LZO !! 75 select HAVE_CONTEXT_TRACKING
90 select HAVE_KERNEL_LZMA !! 76 select HAVE_TIF_NOHZ
91 select HAVE_KPROBES if !CPU_CK610 !! 77 select HAVE_DEBUG_KMEMLEAK
92 select HAVE_KPROBES_ON_FTRACE if !CPU_ !! 78 select IOMMU_HELPER
93 select HAVE_KRETPROBES if !CPU_CK610 !! 79 select SPARSE_IRQ
94 select HAVE_PAGE_SIZE_4KB !! 80 select RTC_DRV_CMOS
>> 81 select RTC_DRV_BQ4802
>> 82 select RTC_DRV_SUN4V
>> 83 select RTC_DRV_STARFIRE
95 select HAVE_PERF_EVENTS 84 select HAVE_PERF_EVENTS
96 select HAVE_PERF_REGS !! 85 select PERF_USE_VMALLOC
97 select HAVE_PERF_USER_STACK_DUMP !! 86 select ARCH_HAVE_NMI_SAFE_CMPXCHG
98 select HAVE_DMA_CONTIGUOUS !! 87 select HAVE_C_RECORDMCOUNT
>> 88 select HAVE_ARCH_AUDITSYSCALL
>> 89 select ARCH_SUPPORTS_ATOMIC_RMW
>> 90 select ARCH_SUPPORTS_DEBUG_PAGEALLOC
>> 91 select HAVE_NMI
99 select HAVE_REGS_AND_STACK_ACCESS_API 92 select HAVE_REGS_AND_STACK_ACCESS_API
100 select HAVE_STACKPROTECTOR !! 93 select ARCH_USE_QUEUED_RWLOCKS
101 select HAVE_SYSCALL_TRACEPOINTS !! 94 select ARCH_USE_QUEUED_SPINLOCKS
102 select HOTPLUG_CORE_SYNC_DEAD if HOTPL !! 95 select GENERIC_TIME_VSYSCALL
103 select LOCK_MM_AND_FIND_VMA !! 96 select ARCH_CLOCKSOURCE_DATA
104 select MAY_HAVE_SPARSE_IRQ !! 97 select ARCH_HAS_PTE_SPECIAL
105 select MODULES_USE_ELF_RELA if MODULES !! 98 select PCI_DOMAINS if PCI
106 select OF !! 99 select ARCH_HAS_GIGANTIC_PAGE
107 select OF_EARLY_FLATTREE <<
108 select PERF_USE_VMALLOC if CPU_CK610 <<
109 select RTC_LIB <<
110 select TIMER_OF <<
111 select GENERIC_PCI_IOMAP <<
112 select HAVE_PCI <<
113 select PCI_DOMAINS_GENERIC if PCI <<
114 select PCI_SYSCALL if PCI <<
115 select PCI_MSI if PCI <<
116 select TRACE_IRQFLAGS_SUPPORT <<
117 100
118 config LOCKDEP_SUPPORT !! 101 config ARCH_PROC_KCORE_TEXT
119 def_bool y 102 def_bool y
120 103
121 config ARCH_SUPPORTS_UPROBES !! 104 config CPU_BIG_ENDIAN
122 def_bool y if !CPU_CK610 !! 105 def_bool y
123 106
124 config CPU_HAS_CACHEV2 !! 107 config ARCH_ATU
125 bool 108 bool
>> 109 default y if SPARC64
126 110
127 config CPU_HAS_FPUV2 !! 111 config STACKTRACE_SUPPORT
128 bool 112 bool
>> 113 default y if SPARC64
129 114
130 config CPU_HAS_HILO !! 115 config LOCKDEP_SUPPORT
131 bool 116 bool
>> 117 default y if SPARC64
132 118
133 config CPU_HAS_TLBI !! 119 config ARCH_HIBERNATION_POSSIBLE
>> 120 def_bool y if SPARC64
>> 121
>> 122 config AUDIT_ARCH
134 bool 123 bool
>> 124 default y
>> 125
>> 126 config HAVE_SETUP_PER_CPU_AREA
>> 127 def_bool y if SPARC64
135 128
136 config CPU_HAS_LDSTEX !! 129 config NEED_PER_CPU_EMBED_FIRST_CHUNK
>> 130 def_bool y if SPARC64
>> 131
>> 132 config NEED_PER_CPU_PAGE_FIRST_CHUNK
>> 133 def_bool y if SPARC64
>> 134
>> 135 config MMU
137 bool 136 bool
138 help !! 137 default y
139 For SMP, CPU needs "ldex&stex" instr <<
140 138
141 config CPU_NEED_TLBSYNC !! 139 config HIGHMEM
142 bool 140 bool
>> 141 default y if SPARC32
>> 142 select KMAP_LOCAL
143 143
144 config CPU_NEED_SOFTALIGN !! 144 config ZONE_DMA
145 bool 145 bool
>> 146 default y if SPARC32
146 147
147 config CPU_NO_USER_BKPT !! 148 config GENERIC_ISA_DMA
148 bool 149 bool
>> 150 default y if SPARC32
>> 151
>> 152 config PGTABLE_LEVELS
>> 153 default 4 if 64BIT
>> 154 default 3
>> 155
>> 156 config ARCH_SUPPORTS_UPROBES
>> 157 def_bool y if SPARC64
>> 158
>> 159 menu "Processor type and features"
>> 160
>> 161 config SMP
>> 162 bool "Symmetric multi-processing support"
149 help 163 help
150 For abiv2 we couldn't use "trap 1" a !! 164 This enables support for systems with more than one CPU. If you have
151 abiv2 is 16/32bit instruction set an !! 165 a system with only one CPU, say N. If you have a system with more
152 So we need a 16bit instruction as us !! 166 than one CPU, say Y.
153 instruction exception. !! 167
154 In kernel we parse the *regs->pc to !! 168 If you say N here, the kernel will run on uni- and multiprocessor
>> 169 machines, but will use only one CPU of a multiprocessor machine. If
>> 170 you say Y here, the kernel will run on many, but not all,
>> 171 uniprocessor machines. On a uniprocessor machine, the kernel
>> 172 will run faster if you say N here.
>> 173
>> 174 People using multiprocessor machines who say Y here should also say
>> 175 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
>> 176 Management" code will be disabled if you say Y here.
155 177
156 config GENERIC_CALIBRATE_DELAY !! 178 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
157 def_bool y !! 179 available at <http://www.tldp.org/docs.html#howto>.
158 180
159 config GENERIC_CSUM !! 181 If you don't know what to do here, say N.
160 def_bool y !! 182
>> 183 config NR_CPUS
>> 184 int "Maximum number of CPUs"
>> 185 depends on SMP
>> 186 range 2 32 if SPARC32
>> 187 range 2 4096 if SPARC64
>> 188 default 32 if SPARC32
>> 189 default 4096 if SPARC64
>> 190
>> 191 source "kernel/Kconfig.hz"
161 192
162 config GENERIC_HWEIGHT 193 config GENERIC_HWEIGHT
163 def_bool y !! 194 bool
>> 195 default y
164 196
165 config MMU !! 197 config GENERIC_CALIBRATE_DELAY
166 def_bool y !! 198 bool
>> 199 default y
167 200
168 config STACKTRACE_SUPPORT !! 201 config ARCH_MAY_HAVE_PC_FDC
169 def_bool y !! 202 bool
>> 203 default y
170 204
171 config TIME_LOW_RES !! 205 config EMULATED_CMPXCHG
172 def_bool y !! 206 bool
>> 207 default y if SPARC32
>> 208 help
>> 209 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
>> 210 is emulated, and therefore it is not completely atomic.
173 211
174 config CPU_ASID_BITS !! 212 # Makefile helpers
175 int !! 213 config SPARC32_SMP
176 default "8" if (CPU_CK610 || CPU_C !! 214 bool
177 default "12" if (CPU_CK860) !! 215 default y
178 !! 216 depends on SPARC32 && SMP
179 config L1_CACHE_SHIFT <<
180 int <<
181 default "4" if (CPU_CK610) <<
182 default "5" if (CPU_CK807 || CPU_C <<
183 default "6" if (CPU_CK860) <<
184 <<
185 config ARCH_MMAP_RND_BITS_MIN <<
186 default 8 <<
187 <<
188 # max bits determined by the following formula <<
189 # VA_BITS - PAGE_SHIFT - 3 <<
190 config ARCH_MMAP_RND_BITS_MAX <<
191 default 17 <<
192 217
193 menu "Processor type and features" !! 218 config SPARC64_SMP
>> 219 bool
>> 220 default y
>> 221 depends on SPARC64 && SMP
>> 222
>> 223 config EARLYFB
>> 224 bool "Support for early boot text console"
>> 225 default y
>> 226 depends on SPARC64
>> 227 help
>> 228 Say Y here to enable a faster early framebuffer boot console.
>> 229
>> 230 config HOTPLUG_CPU
>> 231 bool "Support for hot-pluggable CPUs"
>> 232 depends on SPARC64 && SMP
>> 233 help
>> 234 Say Y here to experiment with turning CPUs off and on. CPUs
>> 235 can be controlled through /sys/devices/system/cpu/cpu#.
>> 236 Say N if you want to disable CPU hotplug.
194 237
195 choice !! 238 if SPARC64
196 prompt "CPU MODEL" !! 239 source "drivers/cpufreq/Kconfig"
197 default CPU_CK807 <<
198 <<
199 config CPU_CK610 <<
200 bool "CSKY CPU ck610" <<
201 select CPU_NEED_TLBSYNC <<
202 select CPU_NEED_SOFTALIGN <<
203 select CPU_NO_USER_BKPT <<
204 <<
205 config CPU_CK810 <<
206 bool "CSKY CPU ck810" <<
207 select CPU_HAS_HILO <<
208 select CPU_NEED_TLBSYNC <<
209 <<
210 config CPU_CK807 <<
211 bool "CSKY CPU ck807" <<
212 select CPU_HAS_HILO <<
213 <<
214 config CPU_CK860 <<
215 bool "CSKY CPU ck860" <<
216 select CPU_HAS_TLBI <<
217 select CPU_HAS_CACHEV2 <<
218 select CPU_HAS_LDSTEX <<
219 select CPU_HAS_FPUV2 <<
220 endchoice <<
221 <<
222 choice <<
223 prompt "PAGE OFFSET" <<
224 default PAGE_OFFSET_80000000 <<
225 <<
226 config PAGE_OFFSET_80000000 <<
227 bool "PAGE OFFSET 2G (user:kernel = 2: <<
228 <<
229 config PAGE_OFFSET_A0000000 <<
230 bool "PAGE OFFSET 2.5G (user:kernel = <<
231 endchoice <<
232 <<
233 config PAGE_OFFSET <<
234 hex <<
235 default 0x80000000 if PAGE_OFFSET_8000 <<
236 default 0xa0000000 if PAGE_OFFSET_A000 <<
237 choice <<
238 <<
239 prompt "C-SKY PMU type" <<
240 depends on PERF_EVENTS <<
241 depends on CPU_CK807 || CPU_CK810 || C <<
242 <<
243 config CPU_PMU_NONE <<
244 bool "None" <<
245 <<
246 config CSKY_PMU_V1 <<
247 bool "Performance Monitoring Unit Ver. <<
248 <<
249 endchoice <<
250 <<
251 choice <<
252 prompt "Power Manager Instruction (wai <<
253 default CPU_PM_NONE <<
254 <<
255 config CPU_PM_NONE <<
256 bool "None" <<
257 <<
258 config CPU_PM_WAIT <<
259 bool "wait" <<
260 <<
261 config CPU_PM_DOZE <<
262 bool "doze" <<
263 <<
264 config CPU_PM_STOP <<
265 bool "stop" <<
266 endchoice <<
267 <<
268 menuconfig HAVE_TCM <<
269 bool "Tightly-Coupled/Sram Memory" <<
270 depends on !COMPILE_TEST <<
271 help <<
272 The implementation are not only used <<
273 but also used by sram on SOC bus. It <<
274 software interface, so that old tcm <<
275 re-used directly. <<
276 <<
277 if HAVE_TCM <<
278 config ITCM_RAM_BASE <<
279 hex "ITCM ram base" <<
280 default 0xffffffff <<
281 <<
282 config ITCM_NR_PAGES <<
283 int "Page count of ITCM size: NR*4KB" <<
284 range 1 256 <<
285 default 32 <<
286 <<
287 config HAVE_DTCM <<
288 bool "DTCM Support" <<
289 <<
290 config DTCM_RAM_BASE <<
291 hex "DTCM ram base" <<
292 depends on HAVE_DTCM <<
293 default 0xffffffff <<
294 <<
295 config DTCM_NR_PAGES <<
296 int "Page count of DTCM size: NR*4KB" <<
297 depends on HAVE_DTCM <<
298 range 1 256 <<
299 default 32 <<
300 endif 240 endif
301 241
302 config CPU_HAS_VDSP !! 242 config US3_MC
303 bool "CPU has VDSP coprocessor" !! 243 tristate "UltraSPARC-III Memory Controller driver"
304 depends on CPU_HAS_FPU && CPU_HAS_FPUV !! 244 depends on SPARC64
305 !! 245 default y
306 config CPU_HAS_FPU !! 246 help
307 bool "CPU has FPU coprocessor" !! 247 This adds a driver for the UltraSPARC-III memory controller.
308 depends on CPU_CK807 || CPU_CK810 || C !! 248 Loading this driver allows exact mnemonic strings to be
309 !! 249 printed in the event of a memory error, so that the faulty DIMM
310 config CPU_HAS_ICACHE_INS !! 250 on the motherboard can be matched to the error.
311 bool "CPU has Icache invalidate instru <<
312 depends on CPU_HAS_CACHEV2 <<
313 <<
314 config CPU_HAS_TEE <<
315 bool "CPU has Trusted Execution Enviro <<
316 depends on CPU_CK810 <<
317 251
318 config SMP !! 252 If in doubt, say Y, as this information can be very useful.
319 bool "Symmetric Multi-Processing (SMP) <<
320 depends on CPU_CK860 <<
321 default n <<
322 253
323 config NR_CPUS !! 254 # Global things across all Sun machines.
324 int "Maximum number of CPUs (2-32)" !! 255 config GENERIC_LOCKBREAK
325 range 2 32 !! 256 bool
326 depends on SMP !! 257 default y
327 default "4" !! 258 depends on SPARC64 && SMP && PREEMPTION
328 259
329 config HIGHMEM !! 260 config NUMA
330 bool "High Memory Support" !! 261 bool "NUMA support"
331 depends on !CPU_CK610 !! 262 depends on SPARC64 && SMP
332 select KMAP_LOCAL !! 263
>> 264 config NODES_SHIFT
>> 265 int "Maximum NUMA Nodes (as a power of 2)"
>> 266 range 4 5 if SPARC64
>> 267 default "5"
>> 268 depends on NEED_MULTIPLE_NODES
>> 269 help
>> 270 Specify the maximum number of NUMA Nodes available on the target
>> 271 system. Increases memory reserved to accommodate various tables.
>> 272
>> 273 config ARCH_SPARSEMEM_ENABLE
>> 274 def_bool y if SPARC64
>> 275 select SPARSEMEM_VMEMMAP_ENABLE
>> 276
>> 277 config ARCH_SPARSEMEM_DEFAULT
>> 278 def_bool y if SPARC64
>> 279
>> 280 config FORCE_MAX_ZONEORDER
>> 281 int "Maximum zone order"
>> 282 default "13"
>> 283 help
>> 284 The kernel memory allocator divides physically contiguous memory
>> 285 blocks into "zones", where each zone is a power of two number of
>> 286 pages. This option selects the largest power of two that the kernel
>> 287 keeps in the memory allocator. If you need to allocate very large
>> 288 blocks of physically contiguous memory, then you may need to
>> 289 increase this value.
>> 290
>> 291 This config option is actually maximum order plus one. For example,
>> 292 a value of 13 means that the largest free memory block is 2^12 pages.
>> 293
>> 294 if SPARC64
>> 295 source "kernel/power/Kconfig"
>> 296 endif
>> 297
>> 298 config SCHED_SMT
>> 299 bool "SMT (Hyperthreading) scheduler support"
>> 300 depends on SPARC64 && SMP
333 default y 301 default y
>> 302 help
>> 303 SMT scheduler support improves the CPU scheduler's decision making
>> 304 when dealing with SPARC cpus at a cost of slightly increased overhead
>> 305 in some places. If unsure say N here.
>> 306
>> 307 config SCHED_MC
>> 308 bool "Multi-core scheduler support"
>> 309 depends on SPARC64 && SMP
>> 310 default y
>> 311 help
>> 312 Multi-core scheduler support improves the CPU scheduler's decision
>> 313 making when dealing with multi-core CPU chips at a cost of slightly
>> 314 increased overhead in some places. If unsure say N here.
>> 315
>> 316 config CMDLINE_BOOL
>> 317 bool "Default bootloader kernel arguments"
>> 318 depends on SPARC64
>> 319
>> 320 config CMDLINE
>> 321 string "Initial kernel command string"
>> 322 depends on CMDLINE_BOOL
>> 323 default "console=ttyS0,9600 root=/dev/sda1"
>> 324 help
>> 325 Say Y here if you want to be able to pass default arguments to
>> 326 the kernel. This will be overridden by the bootloader, if you
>> 327 use one (such as SILO). This is most useful if you want to boot
>> 328 a kernel from TFTP, and want default options to be available
>> 329 with having them passed on the command line.
334 330
335 config DRAM_BASE !! 331 NOTE: This option WILL override the PROM bootargs setting!
336 hex "DRAM start addr (the same with me <<
337 default 0x0 <<
338 332
339 config HOTPLUG_CPU !! 333 config SUN_PM
340 bool "Support for hot-pluggable CPUs" !! 334 bool
341 select GENERIC_IRQ_MIGRATION !! 335 default y if SPARC32
342 depends on SMP <<
343 help 336 help
344 Say Y here to allow turning CPUs off !! 337 Enable power management and CPU standby features on supported
345 controlled through /sys/devices/syst !! 338 SPARC platforms.
346 339
347 Say N if you want to disable CPU hot !! 340 config SPARC_LED
>> 341 tristate "Sun4m LED driver"
>> 342 depends on SPARC32
>> 343 help
>> 344 This driver toggles the front-panel LED on sun4m systems
>> 345 in a user-specifiable manner. Its state can be probed
>> 346 by reading /proc/led and its blinking mode can be changed
>> 347 via writes to /proc/led
>> 348
>> 349 config SERIAL_CONSOLE
>> 350 bool
>> 351 depends on SPARC32
>> 352 default y
>> 353 help
>> 354 If you say Y here, it will be possible to use a serial port as the
>> 355 system console (the system console is the device which receives all
>> 356 kernel messages and warnings and which allows logins in single user
>> 357 mode). This could be useful if some terminal or printer is connected
>> 358 to that serial port.
>> 359
>> 360 Even if you say Y here, the currently visible virtual console
>> 361 (/dev/tty0) will still be used as the system console by default, but
>> 362 you can alter that using a kernel command line option such as
>> 363 "console=ttyS1". (Try "man bootparam" or see the documentation of
>> 364 your boot loader (silo) about how to pass options to the kernel at
>> 365 boot time.)
>> 366
>> 367 If you don't have a graphics card installed and you say Y here, the
>> 368 kernel will automatically use the first serial line, /dev/ttyS0, as
>> 369 system console.
>> 370
>> 371 If unsure, say N.
>> 372
>> 373 config SPARC_LEON
>> 374 bool "Sparc Leon processor family"
>> 375 depends on SPARC32
>> 376 select USB_EHCI_BIG_ENDIAN_MMIO
>> 377 select USB_EHCI_BIG_ENDIAN_DESC
>> 378 select USB_UHCI_BIG_ENDIAN_MMIO
>> 379 select USB_UHCI_BIG_ENDIAN_DESC
>> 380 help
>> 381 If you say Y here if you are running on a SPARC-LEON processor.
>> 382 The LEON processor is a synthesizable VHDL model of the
>> 383 SPARC-v8 standard. LEON is part of the GRLIB collection of
>> 384 IP cores that are distributed under GPL. GRLIB can be downloaded
>> 385 from www.gaisler.com. You can download a sparc-linux cross-compilation
>> 386 toolchain at www.gaisler.com.
>> 387
>> 388 if SPARC_LEON
>> 389 menu "U-Boot options"
>> 390
>> 391 config UBOOT_LOAD_ADDR
>> 392 hex "uImage Load Address"
>> 393 default 0x40004000
>> 394 help
>> 395 U-Boot kernel load address, the address in physical address space
>> 396 where u-boot will place the Linux kernel before booting it.
>> 397 This address is normally the base address of main memory + 0x4000.
>> 398
>> 399 config UBOOT_FLASH_ADDR
>> 400 hex "uImage.o Load Address"
>> 401 default 0x00080000
>> 402 help
>> 403 Optional setting only affecting the uImage.o ELF-image used to
>> 404 download the uImage file to the target using a ELF-loader other than
>> 405 U-Boot. It may for example be used to download an uImage to FLASH with
>> 406 the GRMON utility before even starting u-boot.
>> 407
>> 408 config UBOOT_ENTRY_ADDR
>> 409 hex "uImage Entry Address"
>> 410 default 0xf0004000
>> 411 help
>> 412 Do not change this unless you know what you're doing. This is
>> 413 hardcoded by the SPARC32 and LEON port.
>> 414
>> 415 This is the virtual address u-boot jumps to when booting the Linux
>> 416 Kernel.
>> 417
>> 418 endmenu
>> 419 endif
>> 420
>> 421 endmenu
>> 422
>> 423 menu "Bus options (PCI etc.)"
>> 424 config SBUS
>> 425 bool
>> 426 default y
>> 427
>> 428 config SBUSCHAR
>> 429 bool
>> 430 default y
>> 431
>> 432 config SUN_LDOMS
>> 433 bool "Sun Logical Domains support"
>> 434 depends on SPARC64
>> 435 help
>> 436 Say Y here is you want to support virtual devices via
>> 437 Logical Domains.
>> 438
>> 439 config PCIC_PCI
>> 440 bool
>> 441 depends on PCI && SPARC32 && !SPARC_LEON
>> 442 default y
>> 443
>> 444 config LEON_PCI
>> 445 bool
>> 446 depends on PCI && SPARC_LEON
>> 447 default y
348 448
349 config HAVE_EFFICIENT_UNALIGNED_STRING_OPS !! 449 config SPARC_GRPCI1
350 bool "Enable EFFICIENT_UNALIGNED_STRIN !! 450 bool "GRPCI Host Bridge Support"
351 depends on CPU_CK807 || CPU_CK810 || C !! 451 depends on LEON_PCI
>> 452 default y
352 help 453 help
353 Say Y here to enable EFFICIENT_UNALI !! 454 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
354 deal with unaligned access by hardwa !! 455 PCI host controller is typically found in GRLIB SPARC32/LEON
>> 456 systems. The driver has one property (all_pci_errors) controlled
>> 457 from the bootloader that makes the GRPCI to generate interrupts
>> 458 on detected PCI Parity and System errors.
>> 459
>> 460 config SPARC_GRPCI2
>> 461 bool "GRPCI2 Host Bridge Support"
>> 462 depends on LEON_PCI
>> 463 default y
>> 464 help
>> 465 Say Y here to include the GRPCI2 Host Bridge Driver.
>> 466
>> 467 config SUN_OPENPROMFS
>> 468 tristate "Openprom tree appears in /proc/openprom"
>> 469 help
>> 470 If you say Y, the OpenPROM device tree will be available as a
>> 471 virtual file system, which you can mount to /proc/openprom by "mount
>> 472 -t openpromfs none /proc/openprom".
>> 473
>> 474 To compile the /proc/openprom support as a module, choose M here: the
>> 475 module will be called openpromfs.
>> 476
>> 477 Only choose N if you know in advance that you will not need to modify
>> 478 OpenPROM settings on the running system.
>> 479
>> 480 # Makefile helpers
>> 481 config SPARC64_PCI
>> 482 bool
>> 483 default y
>> 484 depends on SPARC64 && PCI
>> 485
>> 486 config SPARC64_PCI_MSI
>> 487 bool
>> 488 default y
>> 489 depends on SPARC64_PCI && PCI_MSI
355 490
356 endmenu 491 endmenu
357 492
358 source "arch/csky/Kconfig.platforms" !! 493 config COMPAT
>> 494 bool
>> 495 depends on SPARC64
>> 496 default y
>> 497 select COMPAT_BINFMT_ELF if BINFMT_ELF
>> 498 select HAVE_UID16
>> 499 select ARCH_WANT_OLD_COMPAT_IPC
>> 500 select COMPAT_OLD_SIGACTION
>> 501
>> 502 config SYSVIPC_COMPAT
>> 503 bool
>> 504 depends on COMPAT && SYSVIPC
>> 505 default y
359 506
360 source "kernel/Kconfig.hz" !! 507 source "drivers/sbus/char/Kconfig"
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