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Diffstat (limited to 'arch/arm/include/asm/fixmap.h')
-rw-r--r--arch/arm/include/asm/fixmap.h21
1 files changed, 4 insertions, 17 deletions
diff --git a/arch/arm/include/asm/fixmap.h b/arch/arm/include/asm/fixmap.h
index bbae919bceb4..74124b0d0d79 100644
--- a/arch/arm/include/asm/fixmap.h
+++ b/arch/arm/include/asm/fixmap.h
@@ -1,24 +1,11 @@
1#ifndef _ASM_FIXMAP_H 1#ifndef _ASM_FIXMAP_H
2#define _ASM_FIXMAP_H 2#define _ASM_FIXMAP_H
3 3
4/* 4#define FIXADDR_START 0xffc00000UL
5 * Nothing too fancy for now. 5#define FIXADDR_TOP 0xffe00000UL
6 *
7 * On ARM we already have well known fixed virtual addresses imposed by
8 * the architecture such as the vector page which is located at 0xffff0000,
9 * therefore a second level page table is already allocated covering
10 * 0xfff00000 upwards.
11 *
12 * The cache flushing code in proc-xscale.S uses the virtual area between
13 * 0xfffe0000 and 0xfffeffff.
14 */
15
16#define FIXADDR_START 0xfff00000UL
17#define FIXADDR_TOP 0xfffe0000UL
18#define FIXADDR_SIZE (FIXADDR_TOP - FIXADDR_START) 6#define FIXADDR_SIZE (FIXADDR_TOP - FIXADDR_START)
19 7
20#define FIX_KMAP_BEGIN 0 8#define FIX_KMAP_NR_PTES (FIXADDR_SIZE >> PAGE_SHIFT)
21#define FIX_KMAP_END (FIXADDR_SIZE >> PAGE_SHIFT)
22 9
23#define __fix_to_virt(x) (FIXADDR_START + ((x) << PAGE_SHIFT)) 10#define __fix_to_virt(x) (FIXADDR_START + ((x) << PAGE_SHIFT))
24#define __virt_to_fix(x) (((x) - FIXADDR_START) >> PAGE_SHIFT) 11#define __virt_to_fix(x) (((x) - FIXADDR_START) >> PAGE_SHIFT)
@@ -27,7 +14,7 @@ extern void __this_fixmap_does_not_exist(void);
27 14
28static inline unsigned long fix_to_virt(const unsigned int idx) 15static inline unsigned long fix_to_virt(const unsigned int idx)
29{ 16{
30 if (idx >= FIX_KMAP_END) 17 if (idx >= FIX_KMAP_NR_PTES)
31 __this_fixmap_does_not_exist(); 18 __this_fixmap_does_not_exist();
32 return __fix_to_virt(idx); 19 return __fix_to_virt(idx);
33} 20}