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authorPaul Mackerras <paulus@samba.org>2005-11-15 21:38:21 -0500
committerPaul Mackerras <paulus@samba.org>2005-11-15 21:52:21 -0500
commit94b212c29f685ca54b5689a8e89ac7671c43d651 (patch)
tree356266520a5ba530b2a5b77b68e90e87a2402ecb /arch/powerpc/boot/page.h
parent7486a38f683d49e6f8b2b9050ff06778b151a40c (diff)
powerpc: Move ppc64 boot wrapper code over to arch/powerpc
This also extends the code to handle 32-bit ELF vmlinux files as well as 64-bit ones. This is sufficient for booting on new-world 32-bit powermacs (i.e. all recent machines). Signed-off-by: Paul Mackerras <paulus@samba.org>
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 000000000000..14eca30fef64
--- /dev/null
+++ b/arch/powerpc/boot/page.h
@@ -0,0 +1,34 @@
1#ifndef _PPC_BOOT_PAGE_H
2#define _PPC_BOOT_PAGE_H
3/*
4 * Copyright (C) 2001 PPC64 Team, IBM Corp
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 */
11
12#ifdef __ASSEMBLY__
13#define ASM_CONST(x) x
14#else
15#define __ASM_CONST(x) x##UL
16#define ASM_CONST(x) __ASM_CONST(x)
17#endif
18
19/* PAGE_SHIFT determines the page size */
20#define PAGE_SHIFT 12
21#define PAGE_SIZE (ASM_CONST(1) << PAGE_SHIFT)
22#define PAGE_MASK (~(PAGE_SIZE-1))
23
24/* align addr on a size boundary - adjust address up/down if needed */
25#define _ALIGN_UP(addr,size) (((addr)+((size)-1))&(~((size)-1)))
26#define _ALIGN_DOWN(addr,size) ((addr)&(~((size)-1)))
27
28/* align addr on a size boundary - adjust address up if needed */
29#define _ALIGN(addr,size) _ALIGN_UP(addr,size)
30
31/* to align the pointer to the (next) page boundary */
32#define PAGE_ALIGN(addr) _ALIGN(addr, PAGE_SIZE)
33
34#endif /* _PPC_BOOT_PAGE_H */