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authorJeff Garzik <jgarzik@pobox.com>2005-11-18 11:44:17 -0500
committerJeff Garzik <jgarzik@pobox.com>2005-11-18 11:44:17 -0500
commitf333b3f111e9db76109e304df8ee777ace7fbf86 (patch)
treece9a74a7327020c48c80d278e1db5f12552f0fb0 /arch/powerpc/boot/page.h
parentf4256e301d9800b1e0276404cb01b3ac85b51067 (diff)
parent79bfb0a98fdc73ed6a18469cef245cbf50a1d8bb (diff)
Merge branch 'upstream'
Diffstat (limited to 'arch/powerpc/boot/page.h')
-rw-r--r--arch/powerpc/boot/page.h34
1 files changed, 34 insertions, 0 deletions
diff --git a/arch/powerpc/boot/page.h b/arch/powerpc/boot/page.h
new file mode 100644
index 00000000000..14eca30fef6
--- /dev/null
+++ b/arch/powerpc/boot/page.h
@@ -0,0 +1,34 @@
+#ifndef _PPC_BOOT_PAGE_H
+#define _PPC_BOOT_PAGE_H
+/*
+ * Copyright (C) 2001 PPC64 Team, IBM Corp
+ *
+ * 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.
+ */
+
+#ifdef __ASSEMBLY__
+#define ASM_CONST(x) x
+#else
+#define __ASM_CONST(x) x##UL
+#define ASM_CONST(x) __ASM_CONST(x)
+#endif
+
+/* PAGE_SHIFT determines the page size */
+#define PAGE_SHIFT 12
+#define PAGE_SIZE (ASM_CONST(1) << PAGE_SHIFT)
+#define PAGE_MASK (~(PAGE_SIZE-1))
+
+/* align addr on a size boundary - adjust address up/down if needed */
+#define _ALIGN_UP(addr,size) (((addr)+((size)-1))&(~((size)-1)))
+#define _ALIGN_DOWN(addr,size) ((addr)&(~((size)-1)))
+
+/* align addr on a size boundary - adjust address up if needed */
+#define _ALIGN(addr,size) _ALIGN_UP(addr,size)
+
+/* to align the pointer to the (next) page boundary */
+#define PAGE_ALIGN(addr) _ALIGN(addr, PAGE_SIZE)
+
+#endif /* _PPC_BOOT_PAGE_H */