score: Add support for Sunplus S+core architecture

This is the complete set of new arch Score's files for linux.
Score instruction set support 16bits, 32bits and 64bits instruction,
Score SOC had been used in game machine and LCD TV.

Signed-off-by: Chen Liqin <liqin.chen@sunplusct.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 47 insertions, 0 deletions

diff --git a/arch/score/include/asm/cacheflush.h b/arch/score/include/asm/cacheflush.h
new file mode 100644
index 000000000000..1c74628caf71
--- /dev/null
+++ b/arch/score/include/asm/cacheflush.h
@@ -0,0 +1,47 @@
+#ifndef _ASM_SCORE_CACHEFLUSH_H
+#define _ASM_SCORE_CACHEFLUSH_H
+
+/* Keep includes the same across arches. */
+#include <linux/mm.h>
+
+extern void (*flush_cache_all)(void);
+extern void (*flush_cache_mm)(struct mm_struct *mm);
+extern void (*flush_cache_range)(struct vm_area_struct *vma,
+				unsigned long start, unsigned long end);
+extern void (*flush_cache_page)(struct vm_area_struct *vma,
+				unsigned long page, unsigned long pfn);
+extern void (*flush_cache_sigtramp)(unsigned long addr);
+extern void (*flush_icache_all)(void);
+extern void (*flush_icache_range)(unsigned long start, unsigned long end);
+extern void (*flush_data_cache_page)(unsigned long addr);
+
+extern void s7_flush_cache_all(void);
+
+#define flush_cache_dup_mm(mm)			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_cache_vmap(start, end)		do {} while (0)
+#define flush_cache_vunmap(start, end)		do {} while (0)
+
+static inline void flush_icache_page(struct vm_area_struct *vma,
+	struct page *page)
+{
+	if (vma->vm_flags & VM_EXEC) {
+		void *v = page_address(page);
+		flush_icache_range((unsigned long) v,
+				(unsigned long) v + PAGE_SIZE);
+	}
+}
+
+#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
+	memcpy(dst, src, len)
+
+#define copy_to_user_page(vma, page, vaddr, dst, src, len)	\
+	do {							\
+		memcpy(dst, src, len);				\
+		if ((vma->vm_flags & VM_EXEC))			\
+			flush_cache_page(vma, vaddr, page_to_pfn(page));\
+	} while (0)
+
+#endif /* _ASM_SCORE_CACHEFLUSH_H */