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MIPS: Move FIXADDR_TOP into spaces.h

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Memory maps and addressing quirks are normally defined in <spaces.h>.
There are already three targets that need to override FIXADDR_TOP, and
others exist.  This will be a cleaner approach than adding lots of
ifdefs in fixmap.h .

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Cc: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1573/
Acked-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Kevin Cernekee 2010-09-07 12:59:15 -07:00 committed by Ralf Baechle
parent d0023c4a0a
commit 565b60de32
5 changed files with 56 additions and 9 deletions
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10
arch/mips/include/asm/fixmap.h
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@ -14,6 +14,7 @@
#define _ASM_FIXMAP_H
#include <asm/page.h>
#include <spaces.h>
#ifdef CONFIG_HIGHMEM
#include <linux/threads.h>
#include <asm/kmap_types.h>
@ -67,15 +68,6 @@ enum fixed_addresses {
* the start of the fixmap, and leave one page empty
* at the top of mem..
*/
#ifdef CONFIG_BCM63XX
#define FIXADDR_TOP ((unsigned long)(long)(int)0xff000000)
#else
#if defined(CONFIG_CPU_TX39XX) || defined(CONFIG_CPU_TX49XX)
#define FIXADDR_TOP ((unsigned long)(long)(int)(0xff000000 - 0x20000))
#else
#define FIXADDR_TOP ((unsigned long)(long)(int)0xfffe0000)
#endif
#endif
#define FIXADDR_SIZE (__end_of_fixed_addresses << PAGE_SHIFT)
#define FIXADDR_START (FIXADDR_TOP - FIXADDR_SIZE)

17
arch/mips/include/asm/mach-bcm63xx/spaces.h Normal file
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@ -0,0 +1,17 @@
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 1994 - 1999, 2000, 03, 04 Ralf Baechle
* Copyright (C) 2000, 2002 Maciej W. Rozycki
* Copyright (C) 1990, 1999, 2000 Silicon Graphics, Inc.
*/
#ifndef _ASM_BCM63XX_SPACES_H
#define _ASM_BCM63XX_SPACES_H
#define FIXADDR_TOP ((unsigned long)(long)(int)0xff000000)
#include <asm/mach-generic/spaces.h>
#endif /* __ASM_BCM63XX_SPACES_H */

4
arch/mips/include/asm/mach-generic/spaces.h
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@ -82,4 +82,8 @@
#define PAGE_OFFSET (CAC_BASE + PHYS_OFFSET)
#endif
#ifndef FIXADDR_TOP
#define FIXADDR_TOP ((unsigned long)(long)(int)0xfffe0000)
#endif
#endif /* __ASM_MACH_GENERIC_SPACES_H */

17
arch/mips/include/asm/mach-tx39xx/spaces.h Normal file
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@ -0,0 +1,17 @@
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 1994 - 1999, 2000, 03, 04 Ralf Baechle
* Copyright (C) 2000, 2002 Maciej W. Rozycki
* Copyright (C) 1990, 1999, 2000 Silicon Graphics, Inc.
*/
#ifndef _ASM_TX39XX_SPACES_H
#define _ASM_TX39XX_SPACES_H
#define FIXADDR_TOP ((unsigned long)(long)(int)0xfefe0000)
#include <asm/mach-generic/spaces.h>
#endif /* __ASM_TX39XX_SPACES_H */

17
arch/mips/include/asm/mach-tx49xx/spaces.h Normal file
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@ -0,0 +1,17 @@
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 1994 - 1999, 2000, 03, 04 Ralf Baechle
* Copyright (C) 2000, 2002 Maciej W. Rozycki
* Copyright (C) 1990, 1999, 2000 Silicon Graphics, Inc.
*/
#ifndef _ASM_TX49XX_SPACES_H
#define _ASM_TX49XX_SPACES_H
#define FIXADDR_TOP ((unsigned long)(long)(int)0xfefe0000)
#include <asm/mach-generic/spaces.h>
#endif /* __ASM_TX49XX_SPACES_H */