1 files changed, 115 insertions, 0 deletions
diff --git a/include/asm-arm26/page.h b/include/asm-arm26/page.h
new file mode 100644
index 0000000..c334079
--- /dev/null
+++ b/include/asm-arm26/page.h
@@ -0,0 +1,115 @@
+#ifndef _ASMARM_PAGE_H
+#define _ASMARM_PAGE_H
+
+#include <linux/config.h>
+
+#ifdef __KERNEL__
+#ifndef __ASSEMBLY__
+
+extern void __clear_user_page(void *p, unsigned long user);
+extern void __copy_user_page(void *to, const void *from, unsigned long user);
+extern void copy_page(void *to, const void *from);
+
+//FIXME these may be wrong on ARM26
+#define clear_user_page(addr,vaddr,pg)			\
+	do {						\
+		preempt_disable();			\
+		__clear_user_page(addr, vaddr);	\
+		preempt_enable();			\
+	} while (0)
+
+#define copy_user_page(to,from,vaddr,pg)		\
+	do {						\
+		preempt_disable();			\
+		__copy_user_page(to, from, vaddr);	\
+		preempt_enable();			\
+	} while (0)
+
+#define clear_page(page)	memzero((void *)(page), PAGE_SIZE)
+#define copy_page(to, from)  __copy_user_page(to, from, 0);
+
+#undef STRICT_MM_TYPECHECKS
+
+#ifdef STRICT_MM_TYPECHECKS
+/*
+ * These are used to make use of C type-checking..
+ */
+typedef struct { unsigned long pgd; } pgd_t;
+typedef struct { unsigned long pte; } pte_t;
+typedef struct { unsigned long pmd; } pmd_t;
+typedef struct { unsigned long pgprot; } pgprot_t;
+
+#define pgd_val(x)      ((x).pgd)
+#define pte_val(x)      ((x).pte)
+#define pmd_val(x)      ((x).pmd)
+#define pgprot_val(x)   ((x).pgprot)
+
+#define __pte(x)        ((pte_t) { (x) } )
+#define __pmd(x)        ((pmd_t) { (x) } )
+#define __pgprot(x)     ((pgprot_t) { (x) } )
+
+#else
+/*
+ * .. while these make it easier on the compiler
+ */
+typedef unsigned long pgd_t;
+typedef unsigned long pte_t;
+typedef unsigned long pmd_t;
+typedef unsigned long pgprot_t;
+
+//FIXME - should these cast to unsigned long?
+#define pgd_val(x)      (x)
+#define pte_val(x)      (x)
+#define pmd_val(x)      (x)
+#define pgprot_val(x)   (x)
+
+#define __pte(x)        (x)
+#define __pmd(x)        (x)
+#define __pgprot(x)     (x)
+
+#endif /* STRICT_MM_TYPECHECKS */
+#endif /* !__ASSEMBLY__ */
+#endif /* __KERNEL__ */
+
+/* PAGE_SHIFT determines the page size.  This is configurable. */
+#if defined(CONFIG_PAGESIZE_16)
+#define PAGE_SHIFT      14              /* 16K */
+#else           /* default */
+#define PAGE_SHIFT      15              /* 32K */
+#endif
+
+#define EXEC_PAGESIZE   32768
+
+#define PAGE_SIZE		(1UL << PAGE_SHIFT)
+#define PAGE_MASK		(~(PAGE_SIZE-1))
+
+/* to align the pointer to the (next) page boundary */
+#define PAGE_ALIGN(addr)	(((addr)+PAGE_SIZE-1)&PAGE_MASK)
+
+#ifdef __KERNEL__
+#ifndef __ASSEMBLY__
+
+/* Pure 2^n version of get_order */
+static inline int get_order(unsigned long size)
+{
+	int order;
+
+	size = (size-1) >> (PAGE_SHIFT-1);
+	order = -1;
+	do {
+		size >>= 1;
+		order++;
+	} while (size);
+	return order;
+}
+
+#include <asm/memory.h>
+
+#endif /* !__ASSEMBLY__ */
+
+#define VM_DATA_DEFAULT_FLAGS	(VM_READ | VM_WRITE | VM_EXEC | \
+				 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
+
+#endif /* __KERNEL__ */
+
+#endif