1 files changed, 128 insertions, 0 deletions
diff --git a/include/asm-blackfin/page.h b/include/asm-blackfin/page.h
new file mode 100644
index 0000000..406ece5
--- /dev/null
+++ b/include/asm-blackfin/page.h
@@ -0,0 +1,128 @@
+/*
+ * U-boot -  page.h
+ *
+ * Copyright (c) 2005 blackfin.uclinux.org
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef _BLACKFIN_PAGE_H
+#define _BLACKFIN_PAGE_H
+
+#include <linux/config.h>
+
+/* PAGE_SHIFT determines the page size */
+
+#define PAGE_SHIFT			(12)
+#define PAGE_SIZE			(4096)
+#define PAGE_MASK			(~(PAGE_SIZE-1))
+
+#ifdef __KERNEL__
+
+#include <asm/setup.h>
+
+#if PAGE_SHIFT < 13
+#define					KTHREAD_SIZE (8192)
+#else
+#define					KTHREAD_SIZE PAGE_SIZE
+#endif
+
+#ifndef __ASSEMBLY__
+
+#define get_user_page(vaddr)		__get_free_page(GFP_KERNEL)
+#define free_user_page(page, addr)	free_page(addr)
+
+#define clear_page(page)		memset((page), 0, PAGE_SIZE)
+#define copy_page(to,from)		memcpy((to), (from), PAGE_SIZE)
+
+#define clear_user_page(page, vaddr)	clear_page(page)
+#define copy_user_page(to, from, vaddr)	copy_page(to, from)
+
+/*
+ * These are used to make use of C type-checking..
+ */
+typedef struct {
+	unsigned long pte;
+} pte_t;
+typedef struct {
+	unsigned long pmd[16];
+} pmd_t;
+typedef struct {
+	unsigned long pgd;
+} pgd_t;
+typedef struct {
+	unsigned long pgprot;
+} pgprot_t;
+
+#define pte_val(x)			((x).pte)
+#define pmd_val(x)			((&x)->pmd[0])
+#define pgd_val(x)			((x).pgd)
+#define pgprot_val(x)			((x).pgprot)
+
+#define __pte(x)			((pte_t) { (x) } )
+#define __pmd(x)			((pmd_t) { (x) } )
+#define __pgd(x)			((pgd_t) { (x) } )
+#define __pgprot(x)			((pgprot_t) { (x) } )
+
+/* to align the pointer to the (next) page boundary */
+#define PAGE_ALIGN(addr)		(((addr)+PAGE_SIZE-1)&PAGE_MASK)
+
+/* Pure 2^n version of get_order */
+extern __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;
+}
+
+#endif	/* !__ASSEMBLY__ */
+
+#include <asm/page_offset.h>
+
+#define PAGE_OFFSET			(PAGE_OFFSET_RAW)
+
+#ifndef __ASSEMBLY__
+
+#define __pa(vaddr)			virt_to_phys((void *)vaddr)
+#define __va(paddr)			phys_to_virt((unsigned long)paddr)
+
+#define MAP_NR(addr)			(((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT)
+#define virt_to_page(addr)		(mem_map + (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT))
+#define VALID_PAGE(page)		((page - mem_map) < max_mapnr)
+
+#define BUG() do	{ \
+	 \
+	while (1);	/* dead-loop */ \
+} while (0)
+
+#define PAGE_BUG(page) do	{ \
+	BUG(); \
+} while (0)
+
+#endif
+
+#endif
+
+#endif