20 select CPU_HAS_PTEA if !CPU_SH4A || CPU_SHX2
21 select CPU_HAS_FPU if !CPU_SH4AL_DSP
39 prompt "Processor sub-type selection"
45 # SH-2 Processor Support
47 config CPU_SUBTYPE_SH7619
48 bool "Support SH7619 processor"
51 # SH-2A Processor Support
53 config CPU_SUBTYPE_SH7206
54 bool "Support SH7206 processor"
57 # SH-3 Processor Support
59 config CPU_SUBTYPE_SH7705
60 bool "Support SH7705 processor"
63 config CPU_SUBTYPE_SH7706
64 bool "Support SH7706 processor"
67 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
69 config CPU_SUBTYPE_SH7707
70 bool "Support SH7707 processor"
73 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
75 config CPU_SUBTYPE_SH7708
76 bool "Support SH7708 processor"
79 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
80 if you have a 100 Mhz SH-3 HD6417708R CPU.
82 config CPU_SUBTYPE_SH7709
83 bool "Support SH7709 processor"
86 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
88 config CPU_SUBTYPE_SH7710
89 bool "Support SH7710 processor"
93 Select SH7710 if you have a SH3-DSP SH7710 CPU.
95 config CPU_SUBTYPE_SH7712
96 bool "Support SH7712 processor"
100 Select SH7712 if you have a SH3-DSP SH7712 CPU.
102 config CPU_SUBTYPE_SH7720
103 bool "Support SH7720 processor"
107 Select SH7720 if you have a SH3-DSP SH7720 CPU.
109 # SH-4 Processor Support
111 config CPU_SUBTYPE_SH7750
112 bool "Support SH7750 processor"
115 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
117 config CPU_SUBTYPE_SH7091
118 bool "Support SH7091 processor"
121 Select SH7091 if you have an SH-4 based Sega device (such as
122 the Dreamcast, Naomi, and Naomi 2).
124 config CPU_SUBTYPE_SH7750R
125 bool "Support SH7750R processor"
128 config CPU_SUBTYPE_SH7750S
129 bool "Support SH7750S processor"
132 config CPU_SUBTYPE_SH7751
133 bool "Support SH7751 processor"
136 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
137 or if you have a HD6417751R CPU.
139 config CPU_SUBTYPE_SH7751R
140 bool "Support SH7751R processor"
143 config CPU_SUBTYPE_SH7760
144 bool "Support SH7760 processor"
147 config CPU_SUBTYPE_SH4_202
148 bool "Support SH4-202 processor"
151 # SH-4A Processor Support
153 config CPU_SUBTYPE_SH7770
154 bool "Support SH7770 processor"
157 config CPU_SUBTYPE_SH7780
158 bool "Support SH7780 processor"
161 config CPU_SUBTYPE_SH7785
162 bool "Support SH7785 processor"
165 select ARCH_SPARSEMEM_ENABLE
166 select SYS_SUPPORTS_NUMA
168 config CPU_SUBTYPE_SHX3
169 bool "Support SH-X3 processor"
172 select ARCH_SPARSEMEM_ENABLE
173 select SYS_SUPPORTS_NUMA
174 select SYS_SUPPORTS_SMP
176 # SH4AL-DSP Processor Support
178 config CPU_SUBTYPE_SH7343
179 bool "Support SH7343 processor"
182 config CPU_SUBTYPE_SH7722
183 bool "Support SH7722 processor"
186 select ARCH_SPARSEMEM_ENABLE
187 select SYS_SUPPORTS_NUMA
191 menu "Memory management options"
197 bool "Support for memory management hardware"
201 Some SH processors (such as SH-2/SH-2A) lack an MMU. In order to
202 boot on these systems, this option must not be set.
204 On other systems (such as the SH-3 and 4) where an MMU exists,
205 turning this off will boot the kernel on these machines with the
206 MMU implicitly switched off.
210 default "0x80000000" if MMU
214 hex "Physical memory start address"
217 Computers built with Hitachi SuperH processors always
218 map the ROM starting at address zero. But the processor
219 does not specify the range that RAM takes.
221 The physical memory (RAM) start address will be automatically
222 set to 08000000. Other platforms, such as the Solution Engine
223 boards typically map RAM at 0C000000.
225 Tweak this only when porting to a new machine which does not
226 already have a defconfig. Changing it from the known correct
227 value on any of the known systems will only lead to disaster.
230 hex "Physical memory size"
233 This sets the default memory size assumed by your SH kernel. It can
234 be overridden as normal by the 'mem=' argument on the kernel command
235 line. If unsure, consult your board specifications or just leave it
236 as 0x00400000 which was the default value before this became
240 bool "Support 32-bit physical addressing through PMB"
241 depends on MMU && (CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785)
244 If you say Y here, physical addressing will be extended to
245 32-bits through the SH-4A PMB. If this is not set, legacy
246 29-bit physical addressing will be used.
249 bool "Enable extended TLB mode"
250 depends on (CPU_SHX2 || CPU_SHX3) && MMU && EXPERIMENTAL
252 Selecting this option will enable the extended mode of the SH-X2
253 TLB. For legacy SH-X behaviour and interoperability, say N. For
254 all of the fun new features and a willingless to submit bug reports,
258 bool "Support vsyscall page"
262 This will enable support for the kernel mapping a vDSO page
263 in process space, and subsequently handing down the entry point
264 to the libc through the ELF auxiliary vector.
266 From the kernel side this is used for the signal trampoline.
267 For systems with an MMU that can afford to give up a page,
268 (the default value) say Y.
271 bool "Non Uniform Memory Access (NUMA) Support"
272 depends on MMU && SYS_SUPPORTS_NUMA && EXPERIMENTAL
275 Some SH systems have many various memories scattered around
276 the address space, each with varying latencies. This enables
277 support for these blocks by binding them to nodes and allowing
278 memory policies to be used for prioritizing and controlling
279 allocation behaviour.
283 default "3" if CPU_SUBTYPE_SHX3
285 depends on NEED_MULTIPLE_NODES
287 config ARCH_FLATMEM_ENABLE
291 config ARCH_SPARSEMEM_ENABLE
293 select SPARSEMEM_STATIC
295 config ARCH_SPARSEMEM_DEFAULT
298 config MAX_ACTIVE_REGIONS
300 default "6" if (CPU_SUBTYPE_SHX3 && SPARSEMEM)
301 default "2" if SPARSEMEM && (CPU_SUBTYPE_SH7722 || \
305 config ARCH_POPULATES_NODE_MAP
308 config ARCH_SELECT_MEMORY_MODEL
311 config ARCH_ENABLE_MEMORY_HOTPLUG
315 config ARCH_MEMORY_PROBE
317 depends on MEMORY_HOTPLUG
320 prompt "Kernel page size"
321 default PAGE_SIZE_8KB if X2TLB
322 default PAGE_SIZE_4KB
328 This is the default page size used by all SuperH CPUs.
334 This enables 8kB pages as supported by SH-X2 and later MMUs.
336 config PAGE_SIZE_64KB
340 This enables support for 64kB pages, possible on all SH-4
346 prompt "HugeTLB page size"
347 depends on HUGETLB_PAGE && CPU_SH4 && MMU
348 default HUGETLB_PAGE_SIZE_64K
350 config HUGETLB_PAGE_SIZE_64K
353 config HUGETLB_PAGE_SIZE_256K
357 config HUGETLB_PAGE_SIZE_1MB
360 config HUGETLB_PAGE_SIZE_4MB
364 config HUGETLB_PAGE_SIZE_64MB
374 menu "Cache configuration"
376 config SH7705_CACHE_32KB
377 bool "Enable 32KB cache size for SH7705"
378 depends on CPU_SUBTYPE_SH7705
381 config SH_DIRECT_MAPPED
382 bool "Use direct-mapped caching"
385 Selecting this option will configure the caches to be direct-mapped,
386 even if the cache supports a 2 or 4-way mode. This is useful primarily
387 for debugging on platforms with 2 and 4-way caches (SH7750R/SH7751R,
388 SH4-202, SH4-501, etc.)
390 Turn this option off for platforms that do not have a direct-mapped
391 cache, and you have no need to run the caches in such a configuration.
395 default CACHE_WRITEBACK if CPU_SH2A || CPU_SH3 || CPU_SH4
396 default CACHE_WRITETHROUGH if (CPU_SH2 && !CPU_SH2A)
398 config CACHE_WRITEBACK
400 depends on CPU_SH2A || CPU_SH3 || CPU_SH4
402 config CACHE_WRITETHROUGH
405 Selecting this option will configure the caches in write-through
406 mode, as opposed to the default write-back configuration.
408 Since there's sill some aliasing issues on SH-4, this option will
409 unfortunately still require the majority of flushing functions to
410 be implemented to deal with aliasing.