20 select CPU_HAS_PTEA if (!CPU_SUBTYPE_ST40 && !CPU_SH4A) || CPU_SHX2
31 config CPU_SUBTYPE_ST40
42 prompt "Processor sub-type selection"
48 # SH-2 Processor Support
50 config CPU_SUBTYPE_SH7619
51 bool "Support SH7619 processor"
54 # SH-2A Processor Support
56 config CPU_SUBTYPE_SH7206
57 bool "Support SH7206 processor"
60 # SH-3 Processor Support
62 config CPU_SUBTYPE_SH7705
63 bool "Support SH7705 processor"
66 config CPU_SUBTYPE_SH7706
67 bool "Support SH7706 processor"
70 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
72 config CPU_SUBTYPE_SH7707
73 bool "Support SH7707 processor"
76 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
78 config CPU_SUBTYPE_SH7708
79 bool "Support SH7708 processor"
82 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
83 if you have a 100 Mhz SH-3 HD6417708R CPU.
85 config CPU_SUBTYPE_SH7709
86 bool "Support SH7709 processor"
89 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
91 config CPU_SUBTYPE_SH7710
92 bool "Support SH7710 processor"
96 Select SH7710 if you have a SH3-DSP SH7710 CPU.
98 config CPU_SUBTYPE_SH7712
99 bool "Support SH7712 processor"
103 Select SH7712 if you have a SH3-DSP SH7712 CPU.
105 config CPU_SUBTYPE_SH7720
106 bool "Support SH7720 processor"
110 Select SH7720 if you have a SH3-DSP SH7720 CPU.
112 # SH-4 Processor Support
114 config CPU_SUBTYPE_SH7750
115 bool "Support SH7750 processor"
118 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
120 config CPU_SUBTYPE_SH7091
121 bool "Support SH7091 processor"
124 Select SH7091 if you have an SH-4 based Sega device (such as
125 the Dreamcast, Naomi, and Naomi 2).
127 config CPU_SUBTYPE_SH7750R
128 bool "Support SH7750R processor"
131 config CPU_SUBTYPE_SH7750S
132 bool "Support SH7750S processor"
135 config CPU_SUBTYPE_SH7751
136 bool "Support SH7751 processor"
139 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
140 or if you have a HD6417751R CPU.
142 config CPU_SUBTYPE_SH7751R
143 bool "Support SH7751R processor"
146 config CPU_SUBTYPE_SH7760
147 bool "Support SH7760 processor"
150 config CPU_SUBTYPE_SH4_202
151 bool "Support SH4-202 processor"
154 # ST40 Processor Support
156 config CPU_SUBTYPE_ST40STB1
157 bool "Support ST40STB1/ST40RA processors"
158 select CPU_SUBTYPE_ST40
160 Select ST40STB1 if you have a ST40RA CPU.
161 This was previously called the ST40STB1, hence the option name.
163 config CPU_SUBTYPE_ST40GX1
164 bool "Support ST40GX1 processor"
165 select CPU_SUBTYPE_ST40
167 Select ST40GX1 if you have a ST40GX1 CPU.
169 # SH-4A Processor Support
171 config CPU_SUBTYPE_SH7770
172 bool "Support SH7770 processor"
175 config CPU_SUBTYPE_SH7780
176 bool "Support SH7780 processor"
179 config CPU_SUBTYPE_SH7785
180 bool "Support SH7785 processor"
184 config CPU_SUBTYPE_SHX3
185 bool "Support SH-X3 processor"
188 select ARCH_SPARSEMEM_ENABLE
189 select SYS_SUPPORTS_NUMA
191 # SH4AL-DSP Processor Support
193 config CPU_SUBTYPE_SH7343
194 bool "Support SH7343 processor"
197 config CPU_SUBTYPE_SH7722
198 bool "Support SH7722 processor"
201 select ARCH_SPARSEMEM_ENABLE
202 select SYS_SUPPORTS_NUMA
206 menu "Memory management options"
212 bool "Support for memory management hardware"
216 Some SH processors (such as SH-2/SH-2A) lack an MMU. In order to
217 boot on these systems, this option must not be set.
219 On other systems (such as the SH-3 and 4) where an MMU exists,
220 turning this off will boot the kernel on these machines with the
221 MMU implicitly switched off.
225 default "0x80000000" if MMU
229 hex "Physical memory start address"
232 Computers built with Hitachi SuperH processors always
233 map the ROM starting at address zero. But the processor
234 does not specify the range that RAM takes.
236 The physical memory (RAM) start address will be automatically
237 set to 08000000. Other platforms, such as the Solution Engine
238 boards typically map RAM at 0C000000.
240 Tweak this only when porting to a new machine which does not
241 already have a defconfig. Changing it from the known correct
242 value on any of the known systems will only lead to disaster.
245 hex "Physical memory size"
248 This sets the default memory size assumed by your SH kernel. It can
249 be overridden as normal by the 'mem=' argument on the kernel command
250 line. If unsure, consult your board specifications or just leave it
251 as 0x00400000 which was the default value before this became
255 bool "Support 32-bit physical addressing through PMB"
256 depends on MMU && (CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785)
259 If you say Y here, physical addressing will be extended to
260 32-bits through the SH-4A PMB. If this is not set, legacy
261 29-bit physical addressing will be used.
264 bool "Enable extended TLB mode"
265 depends on CPU_SHX2 && MMU && EXPERIMENTAL
267 Selecting this option will enable the extended mode of the SH-X2
268 TLB. For legacy SH-X behaviour and interoperability, say N. For
269 all of the fun new features and a willingless to submit bug reports,
273 bool "Support vsyscall page"
277 This will enable support for the kernel mapping a vDSO page
278 in process space, and subsequently handing down the entry point
279 to the libc through the ELF auxiliary vector.
281 From the kernel side this is used for the signal trampoline.
282 For systems with an MMU that can afford to give up a page,
283 (the default value) say Y.
286 bool "Non Uniform Memory Access (NUMA) Support"
287 depends on MMU && SYS_SUPPORTS_NUMA && EXPERIMENTAL
290 Some SH systems have many various memories scattered around
291 the address space, each with varying latencies. This enables
292 support for these blocks by binding them to nodes and allowing
293 memory policies to be used for prioritizing and controlling
294 allocation behaviour.
298 default "3" if CPU_SUBTYPE_SHX3
300 depends on NEED_MULTIPLE_NODES
302 config ARCH_FLATMEM_ENABLE
306 config ARCH_SPARSEMEM_ENABLE
308 select SPARSEMEM_STATIC
310 config ARCH_SPARSEMEM_DEFAULT
313 config MAX_ACTIVE_REGIONS
315 default "6" if (CPU_SUBTYPE_SHX3 && SPARSEMEM)
316 default "2" if (CPU_SUBTYPE_SH7722 && SPARSEMEM)
319 config ARCH_POPULATES_NODE_MAP
322 config ARCH_SELECT_MEMORY_MODEL
325 config ARCH_ENABLE_MEMORY_HOTPLUG
329 config ARCH_MEMORY_PROBE
331 depends on MEMORY_HOTPLUG
334 prompt "Kernel page size"
335 default PAGE_SIZE_4KB
340 This is the default page size used by all SuperH CPUs.
344 depends on EXPERIMENTAL && X2TLB
346 This enables 8kB pages as supported by SH-X2 and later MMUs.
348 config PAGE_SIZE_64KB
350 depends on EXPERIMENTAL && CPU_SH4
352 This enables support for 64kB pages, possible on all SH-4
353 CPUs and later. Highly experimental, not recommended.
358 prompt "HugeTLB page size"
359 depends on HUGETLB_PAGE && CPU_SH4 && MMU
360 default HUGETLB_PAGE_SIZE_64K
362 config HUGETLB_PAGE_SIZE_64K
365 config HUGETLB_PAGE_SIZE_256K
369 config HUGETLB_PAGE_SIZE_1MB
372 config HUGETLB_PAGE_SIZE_4MB
376 config HUGETLB_PAGE_SIZE_64MB
386 menu "Cache configuration"
388 config SH7705_CACHE_32KB
389 bool "Enable 32KB cache size for SH7705"
390 depends on CPU_SUBTYPE_SH7705
393 config SH_DIRECT_MAPPED
394 bool "Use direct-mapped caching"
397 Selecting this option will configure the caches to be direct-mapped,
398 even if the cache supports a 2 or 4-way mode. This is useful primarily
399 for debugging on platforms with 2 and 4-way caches (SH7750R/SH7751R,
400 SH4-202, SH4-501, etc.)
402 Turn this option off for platforms that do not have a direct-mapped
403 cache, and you have no need to run the caches in such a configuration.
407 default CACHE_WRITEBACK if CPU_SH2A || CPU_SH3 || CPU_SH4
408 default CACHE_WRITETHROUGH if (CPU_SH2 && !CPU_SH2A)
410 config CACHE_WRITEBACK
412 depends on CPU_SH2A || CPU_SH3 || CPU_SH4
414 config CACHE_WRITETHROUGH
417 Selecting this option will configure the caches in write-through
418 mode, as opposed to the default write-back configuration.
420 Since there's sill some aliasing issues on SH-4, this option will
421 unfortunately still require the majority of flushing functions to
422 be implemented to deal with aliasing.