5 select SH_WRITETHROUGH if !CPU_SH2A
21 select CPU_HAS_PTEA if (!CPU_SUBTYPE_ST40 && !CPU_SH4A) || CPU_SHX2
32 config CPU_SUBTYPE_ST40
35 select CPU_HAS_INTC2_IRQ
44 prompt "Processor sub-type selection"
50 # SH-2 Processor Support
52 config CPU_SUBTYPE_SH7619
53 bool "Support SH7619 processor"
55 select CPU_HAS_IPR_IRQ
57 # SH-2A Processor Support
59 config CPU_SUBTYPE_SH7206
60 bool "Support SH7206 processor"
62 select CPU_HAS_IPR_IRQ
64 # SH-3 Processor Support
66 config CPU_SUBTYPE_SH7705
67 bool "Support SH7705 processor"
69 select CPU_HAS_IPR_IRQ
71 config CPU_SUBTYPE_SH7706
72 bool "Support SH7706 processor"
74 select CPU_HAS_IPR_IRQ
76 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
78 config CPU_SUBTYPE_SH7707
79 bool "Support SH7707 processor"
82 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
84 config CPU_SUBTYPE_SH7708
85 bool "Support SH7708 processor"
88 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
89 if you have a 100 Mhz SH-3 HD6417708R CPU.
91 config CPU_SUBTYPE_SH7709
92 bool "Support SH7709 processor"
94 select CPU_HAS_IPR_IRQ
96 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
98 config CPU_SUBTYPE_SH7710
99 bool "Support SH7710 processor"
101 select CPU_HAS_IPR_IRQ
104 Select SH7710 if you have a SH3-DSP SH7710 CPU.
106 config CPU_SUBTYPE_SH7712
107 bool "Support SH7712 processor"
109 select CPU_HAS_IPR_IRQ
112 Select SH7712 if you have a SH3-DSP SH7712 CPU.
114 # SH-4 Processor Support
116 config CPU_SUBTYPE_SH7750
117 bool "Support SH7750 processor"
119 select CPU_HAS_INTC_IRQ
121 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
123 config CPU_SUBTYPE_SH7091
124 bool "Support SH7091 processor"
126 select CPU_HAS_INTC_IRQ
128 Select SH7091 if you have an SH-4 based Sega device (such as
129 the Dreamcast, Naomi, and Naomi 2).
131 config CPU_SUBTYPE_SH7750R
132 bool "Support SH7750R processor"
134 select CPU_HAS_INTC_IRQ
136 config CPU_SUBTYPE_SH7750S
137 bool "Support SH7750S processor"
139 select CPU_HAS_INTC_IRQ
141 config CPU_SUBTYPE_SH7751
142 bool "Support SH7751 processor"
144 select CPU_HAS_INTC_IRQ
146 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
147 or if you have a HD6417751R CPU.
149 config CPU_SUBTYPE_SH7751R
150 bool "Support SH7751R processor"
152 select CPU_HAS_INTC_IRQ
154 config CPU_SUBTYPE_SH7760
155 bool "Support SH7760 processor"
157 select CPU_HAS_INTC2_IRQ
158 select CPU_HAS_IPR_IRQ
160 config CPU_SUBTYPE_SH4_202
161 bool "Support SH4-202 processor"
164 # ST40 Processor Support
166 config CPU_SUBTYPE_ST40STB1
167 bool "Support ST40STB1/ST40RA processors"
168 select CPU_SUBTYPE_ST40
170 Select ST40STB1 if you have a ST40RA CPU.
171 This was previously called the ST40STB1, hence the option name.
173 config CPU_SUBTYPE_ST40GX1
174 bool "Support ST40GX1 processor"
175 select CPU_SUBTYPE_ST40
177 Select ST40GX1 if you have a ST40GX1 CPU.
179 # SH-4A Processor Support
181 config CPU_SUBTYPE_SH7770
182 bool "Support SH7770 processor"
185 config CPU_SUBTYPE_SH7780
186 bool "Support SH7780 processor"
188 select CPU_HAS_INTC_IRQ
190 config CPU_SUBTYPE_SH7785
191 bool "Support SH7785 processor"
194 select CPU_HAS_INTC2_IRQ
196 config CPU_SUBTYPE_SHX3
197 bool "Support SH-X3 processor"
200 select CPU_HAS_INTC2_IRQ
202 # SH4AL-DSP Processor Support
204 config CPU_SUBTYPE_SH7343
205 bool "Support SH7343 processor"
208 config CPU_SUBTYPE_SH7722
209 bool "Support SH7722 processor"
212 select CPU_HAS_INTC_IRQ
213 select ARCH_SPARSEMEM_ENABLE
214 select SYS_SUPPORTS_NUMA
218 menu "Memory management options"
224 bool "Support for memory management hardware"
228 Some SH processors (such as SH-2/SH-2A) lack an MMU. In order to
229 boot on these systems, this option must not be set.
231 On other systems (such as the SH-3 and 4) where an MMU exists,
232 turning this off will boot the kernel on these machines with the
233 MMU implicitly switched off.
237 default "0x80000000" if MMU
241 hex "Physical memory start address"
244 Computers built with Hitachi SuperH processors always
245 map the ROM starting at address zero. But the processor
246 does not specify the range that RAM takes.
248 The physical memory (RAM) start address will be automatically
249 set to 08000000. Other platforms, such as the Solution Engine
250 boards typically map RAM at 0C000000.
252 Tweak this only when porting to a new machine which does not
253 already have a defconfig. Changing it from the known correct
254 value on any of the known systems will only lead to disaster.
257 hex "Physical memory size"
260 This sets the default memory size assumed by your SH kernel. It can
261 be overridden as normal by the 'mem=' argument on the kernel command
262 line. If unsure, consult your board specifications or just leave it
263 as 0x00400000 which was the default value before this became
267 bool "Support 32-bit physical addressing through PMB"
268 depends on MMU && (CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785)
271 If you say Y here, physical addressing will be extended to
272 32-bits through the SH-4A PMB. If this is not set, legacy
273 29-bit physical addressing will be used.
276 bool "Enable extended TLB mode"
277 depends on CPU_SHX2 && MMU && EXPERIMENTAL
279 Selecting this option will enable the extended mode of the SH-X2
280 TLB. For legacy SH-X behaviour and interoperability, say N. For
281 all of the fun new features and a willingless to submit bug reports,
285 bool "Support vsyscall page"
289 This will enable support for the kernel mapping a vDSO page
290 in process space, and subsequently handing down the entry point
291 to the libc through the ELF auxiliary vector.
293 From the kernel side this is used for the signal trampoline.
294 For systems with an MMU that can afford to give up a page,
295 (the default value) say Y.
298 bool "Non Uniform Memory Access (NUMA) Support"
299 depends on MMU && SYS_SUPPORTS_NUMA && EXPERIMENTAL
302 Some SH systems have many various memories scattered around
303 the address space, each with varying latencies. This enables
304 support for these blocks by binding them to nodes and allowing
305 memory policies to be used for prioritizing and controlling
306 allocation behaviour.
311 depends on NEED_MULTIPLE_NODES
313 config ARCH_FLATMEM_ENABLE
317 config ARCH_SPARSEMEM_ENABLE
319 select SPARSEMEM_STATIC
321 config ARCH_SPARSEMEM_DEFAULT
324 config MAX_ACTIVE_REGIONS
326 default "2" if (CPU_SUBTYPE_SH7722 && SPARSEMEM)
329 config ARCH_POPULATES_NODE_MAP
332 config ARCH_SELECT_MEMORY_MODEL
335 config ARCH_ENABLE_MEMORY_HOTPLUG
339 config ARCH_MEMORY_PROBE
341 depends on MEMORY_HOTPLUG
344 prompt "Kernel page size"
345 default PAGE_SIZE_4KB
350 This is the default page size used by all SuperH CPUs.
354 depends on EXPERIMENTAL && X2TLB
356 This enables 8kB pages as supported by SH-X2 and later MMUs.
358 config PAGE_SIZE_64KB
360 depends on EXPERIMENTAL && CPU_SH4
362 This enables support for 64kB pages, possible on all SH-4
363 CPUs and later. Highly experimental, not recommended.
368 prompt "HugeTLB page size"
369 depends on HUGETLB_PAGE && CPU_SH4 && MMU
370 default HUGETLB_PAGE_SIZE_64K
372 config HUGETLB_PAGE_SIZE_64K
375 config HUGETLB_PAGE_SIZE_256K
379 config HUGETLB_PAGE_SIZE_1MB
382 config HUGETLB_PAGE_SIZE_4MB
386 config HUGETLB_PAGE_SIZE_64MB
396 menu "Cache configuration"
398 config SH7705_CACHE_32KB
399 bool "Enable 32KB cache size for SH7705"
400 depends on CPU_SUBTYPE_SH7705
403 config SH_DIRECT_MAPPED
404 bool "Use direct-mapped caching"
407 Selecting this option will configure the caches to be direct-mapped,
408 even if the cache supports a 2 or 4-way mode. This is useful primarily
409 for debugging on platforms with 2 and 4-way caches (SH7750R/SH7751R,
410 SH4-202, SH4-501, etc.)
412 Turn this option off for platforms that do not have a direct-mapped
413 cache, and you have no need to run the caches in such a configuration.
415 config SH_WRITETHROUGH
416 bool "Use write-through caching"
418 Selecting this option will configure the caches in write-through
419 mode, as opposed to the default write-back configuration.
421 Since there's sill some aliasing issues on SH-4, this option will
422 unfortunately still require the majority of flushing functions to
423 be implemented to deal with aliasing.