sh: Provide common CPU headers, prune the SH-2 and SH-2A directories.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/include/cpu-common/cpu/cacheflush.h

@@ -0,0 +1,44 @@
+/*
+ * include/asm-sh/cpu-sh2/cacheflush.h
+ *
+ * Copyright (C) 2003 Paul Mundt
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#ifndef __ASM_CPU_SH2_CACHEFLUSH_H
+#define __ASM_CPU_SH2_CACHEFLUSH_H
+
+/*
+ * Cache flushing:
+ *
+ *  - flush_cache_all() flushes entire cache
+ *  - flush_cache_mm(mm) flushes the specified mm context's cache lines
+ *  - flush_cache_dup mm(mm) handles cache flushing when forking
+ *  - flush_cache_page(mm, vmaddr, pfn) flushes a single page
+ *  - flush_cache_range(vma, start, end) flushes a range of pages
+ *
+ *  - flush_dcache_page(pg) flushes(wback&invalidates) a page for dcache
+ *  - flush_icache_range(start, end) flushes(invalidates) a range for icache
+ *  - flush_icache_page(vma, pg) flushes(invalidates) a page for icache
+ *
+ *  Caches are indexed (effectively) by physical address on SH-2, so
+ *  we don't need them.
+ */
+#define flush_cache_all()			do { } while (0)
+#define flush_cache_mm(mm)			do { } while (0)
+#define flush_cache_dup_mm(mm)			do { } while (0)
+#define flush_cache_range(vma, start, end)	do { } while (0)
+#define flush_cache_page(vma, vmaddr, pfn)	do { } while (0)
+#define flush_dcache_page(page)			do { } while (0)
+#define flush_dcache_mmap_lock(mapping)		do { } while (0)
+#define flush_dcache_mmap_unlock(mapping)	do { } while (0)
+#define flush_icache_range(start, end)		do { } while (0)
+#define flush_icache_page(vma,pg)		do { } while (0)
+#define flush_icache_user_range(vma,pg,adr,len)	do { } while (0)
+#define flush_cache_sigtramp(vaddr)		do { } while (0)
+
+#define p3_cache_init()				do { } while (0)
+
+#endif /* __ASM_CPU_SH2_CACHEFLUSH_H */