20 select CPU_HAS_PTEA if (!CPU_SUBTYPE_ST40 && !CPU_SH4A) || CPU_SHX2
21 select CPU_HAS_FPU if !CPU_SH4AL_DSP
32 config CPU_SUBTYPE_ST40
43 prompt "Processor sub-type selection"
49 # SH-2 Processor Support
51 config CPU_SUBTYPE_SH7619
52 bool "Support SH7619 processor"
55 # SH-2A Processor Support
57 config CPU_SUBTYPE_SH7206
58 bool "Support SH7206 processor"
61 # SH-3 Processor Support
63 config CPU_SUBTYPE_SH7705
64 bool "Support SH7705 processor"
67 config CPU_SUBTYPE_SH7706
68 bool "Support SH7706 processor"
71 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
73 config CPU_SUBTYPE_SH7707
74 bool "Support SH7707 processor"
77 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
79 config CPU_SUBTYPE_SH7708
80 bool "Support SH7708 processor"
83 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
84 if you have a 100 Mhz SH-3 HD6417708R CPU.
86 config CPU_SUBTYPE_SH7709
87 bool "Support SH7709 processor"
90 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
92 config CPU_SUBTYPE_SH7710
93 bool "Support SH7710 processor"
97 Select SH7710 if you have a SH3-DSP SH7710 CPU.
99 config CPU_SUBTYPE_SH7712
100 bool "Support SH7712 processor"
104 Select SH7712 if you have a SH3-DSP SH7712 CPU.
106 config CPU_SUBTYPE_SH7720
107 bool "Support SH7720 processor"
111 Select SH7720 if you have a SH3-DSP SH7720 CPU.
113 # SH-4 Processor Support
115 config CPU_SUBTYPE_SH7750
116 bool "Support SH7750 processor"
119 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
121 config CPU_SUBTYPE_SH7091
122 bool "Support SH7091 processor"
125 Select SH7091 if you have an SH-4 based Sega device (such as
126 the Dreamcast, Naomi, and Naomi 2).
128 config CPU_SUBTYPE_SH7750R
129 bool "Support SH7750R processor"
132 config CPU_SUBTYPE_SH7750S
133 bool "Support SH7750S processor"
136 config CPU_SUBTYPE_SH7751
137 bool "Support SH7751 processor"
140 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
141 or if you have a HD6417751R CPU.
143 config CPU_SUBTYPE_SH7751R
144 bool "Support SH7751R processor"
147 config CPU_SUBTYPE_SH7760
148 bool "Support SH7760 processor"
151 config CPU_SUBTYPE_SH4_202
152 bool "Support SH4-202 processor"
155 # ST40 Processor Support
157 config CPU_SUBTYPE_ST40STB1
158 bool "Support ST40STB1/ST40RA processors"
159 select CPU_SUBTYPE_ST40
161 Select ST40STB1 if you have a ST40RA CPU.
162 This was previously called the ST40STB1, hence the option name.
164 config CPU_SUBTYPE_ST40GX1
165 bool "Support ST40GX1 processor"
166 select CPU_SUBTYPE_ST40
168 Select ST40GX1 if you have a ST40GX1 CPU.
170 # SH-4A Processor Support
172 config CPU_SUBTYPE_SH7770
173 bool "Support SH7770 processor"
176 config CPU_SUBTYPE_SH7780
177 bool "Support SH7780 processor"
180 config CPU_SUBTYPE_SH7785
181 bool "Support SH7785 processor"
184 select ARCH_SPARSEMEM_ENABLE
185 select SYS_SUPPORTS_NUMA
187 config CPU_SUBTYPE_SHX3
188 bool "Support SH-X3 processor"
191 select ARCH_SPARSEMEM_ENABLE
192 select SYS_SUPPORTS_NUMA
193 select SYS_SUPPORTS_SMP
195 # SH4AL-DSP Processor Support
197 config CPU_SUBTYPE_SH7343
198 bool "Support SH7343 processor"
201 config CPU_SUBTYPE_SH7722
202 bool "Support SH7722 processor"
205 select ARCH_SPARSEMEM_ENABLE
206 select SYS_SUPPORTS_NUMA
210 menu "Memory management options"
216 bool "Support for memory management hardware"
220 Some SH processors (such as SH-2/SH-2A) lack an MMU. In order to
221 boot on these systems, this option must not be set.
223 On other systems (such as the SH-3 and 4) where an MMU exists,
224 turning this off will boot the kernel on these machines with the
225 MMU implicitly switched off.
229 default "0x80000000" if MMU
233 hex "Physical memory start address"
236 Computers built with Hitachi SuperH processors always
237 map the ROM starting at address zero. But the processor
238 does not specify the range that RAM takes.
240 The physical memory (RAM) start address will be automatically
241 set to 08000000. Other platforms, such as the Solution Engine
242 boards typically map RAM at 0C000000.
244 Tweak this only when porting to a new machine which does not
245 already have a defconfig. Changing it from the known correct
246 value on any of the known systems will only lead to disaster.
249 hex "Physical memory size"
252 This sets the default memory size assumed by your SH kernel. It can
253 be overridden as normal by the 'mem=' argument on the kernel command
254 line. If unsure, consult your board specifications or just leave it
255 as 0x00400000 which was the default value before this became
259 bool "Support 32-bit physical addressing through PMB"
260 depends on MMU && (CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785)
263 If you say Y here, physical addressing will be extended to
264 32-bits through the SH-4A PMB. If this is not set, legacy
265 29-bit physical addressing will be used.
268 bool "Enable extended TLB mode"
269 depends on (CPU_SHX2 || CPU_SHX3) && MMU && EXPERIMENTAL
271 Selecting this option will enable the extended mode of the SH-X2
272 TLB. For legacy SH-X behaviour and interoperability, say N. For
273 all of the fun new features and a willingless to submit bug reports,
277 bool "Support vsyscall page"
281 This will enable support for the kernel mapping a vDSO page
282 in process space, and subsequently handing down the entry point
283 to the libc through the ELF auxiliary vector.
285 From the kernel side this is used for the signal trampoline.
286 For systems with an MMU that can afford to give up a page,
287 (the default value) say Y.
290 bool "Non Uniform Memory Access (NUMA) Support"
291 depends on MMU && SYS_SUPPORTS_NUMA && EXPERIMENTAL
294 Some SH systems have many various memories scattered around
295 the address space, each with varying latencies. This enables
296 support for these blocks by binding them to nodes and allowing
297 memory policies to be used for prioritizing and controlling
298 allocation behaviour.
302 default "3" if CPU_SUBTYPE_SHX3
304 depends on NEED_MULTIPLE_NODES
306 config ARCH_FLATMEM_ENABLE
310 config ARCH_SPARSEMEM_ENABLE
312 select SPARSEMEM_STATIC
314 config ARCH_SPARSEMEM_DEFAULT
317 config MAX_ACTIVE_REGIONS
319 default "6" if (CPU_SUBTYPE_SHX3 && SPARSEMEM)
320 default "2" if SPARSEMEM && (CPU_SUBTYPE_SH7722 || \
324 config ARCH_POPULATES_NODE_MAP
327 config ARCH_SELECT_MEMORY_MODEL
330 config ARCH_ENABLE_MEMORY_HOTPLUG
334 config ARCH_MEMORY_PROBE
336 depends on MEMORY_HOTPLUG
339 prompt "Kernel page size"
340 default PAGE_SIZE_8KB if X2TLB
341 default PAGE_SIZE_4KB
347 This is the default page size used by all SuperH CPUs.
353 This enables 8kB pages as supported by SH-X2 and later MMUs.
355 config PAGE_SIZE_64KB
359 This enables support for 64kB pages, possible on all SH-4
365 prompt "HugeTLB page size"
366 depends on HUGETLB_PAGE && CPU_SH4 && MMU
367 default HUGETLB_PAGE_SIZE_64K
369 config HUGETLB_PAGE_SIZE_64K
372 config HUGETLB_PAGE_SIZE_256K
376 config HUGETLB_PAGE_SIZE_1MB
379 config HUGETLB_PAGE_SIZE_4MB
383 config HUGETLB_PAGE_SIZE_64MB
393 menu "Cache configuration"
395 config SH7705_CACHE_32KB
396 bool "Enable 32KB cache size for SH7705"
397 depends on CPU_SUBTYPE_SH7705
400 config SH_DIRECT_MAPPED
401 bool "Use direct-mapped caching"
404 Selecting this option will configure the caches to be direct-mapped,
405 even if the cache supports a 2 or 4-way mode. This is useful primarily
406 for debugging on platforms with 2 and 4-way caches (SH7750R/SH7751R,
407 SH4-202, SH4-501, etc.)
409 Turn this option off for platforms that do not have a direct-mapped
410 cache, and you have no need to run the caches in such a configuration.
414 default CACHE_WRITEBACK if CPU_SH2A || CPU_SH3 || CPU_SH4
415 default CACHE_WRITETHROUGH if (CPU_SH2 && !CPU_SH2A)
417 config CACHE_WRITEBACK
419 depends on CPU_SH2A || CPU_SH3 || CPU_SH4
421 config CACHE_WRITETHROUGH
424 Selecting this option will configure the caches in write-through
425 mode, as opposed to the default write-back configuration.
427 Since there's sill some aliasing issues on SH-4, this option will
428 unfortunately still require the majority of flushing functions to
429 be implemented to deal with aliasing.