1
2#ifndef _ASM_FIXMAP_H
3#define _ASM_FIXMAP_H
4
5#define FIXADDR_START 0xffc00000UL
6#define FIXADDR_END 0xfff00000UL
7#define FIXADDR_TOP (FIXADDR_END - PAGE_SIZE)
8
9#include <asm/kmap_types.h>
10#include <asm/pgtable.h>
11
12enum fixed_addresses {
13 FIX_EARLYCON_MEM_BASE,
14 __end_of_permanent_fixed_addresses,
15
16 FIX_KMAP_BEGIN = __end_of_permanent_fixed_addresses,
17 FIX_KMAP_END = FIX_KMAP_BEGIN + (KM_TYPE_NR * NR_CPUS) - 1,
18
19
20 FIX_TEXT_POKE0,
21 FIX_TEXT_POKE1,
22
23 __end_of_fixmap_region,
24
25
26
27
28
29
30#define NR_FIX_BTMAPS 32
31#define FIX_BTMAPS_SLOTS 7
32#define TOTAL_FIX_BTMAPS (NR_FIX_BTMAPS * FIX_BTMAPS_SLOTS)
33
34 FIX_BTMAP_END = __end_of_permanent_fixed_addresses,
35 FIX_BTMAP_BEGIN = FIX_BTMAP_END + TOTAL_FIX_BTMAPS - 1,
36 __end_of_early_ioremap_region
37};
38
39static const enum fixed_addresses __end_of_fixed_addresses =
40 __end_of_fixmap_region > __end_of_early_ioremap_region ?
41 __end_of_fixmap_region : __end_of_early_ioremap_region;
42
43#define FIXMAP_PAGE_COMMON (L_PTE_YOUNG | L_PTE_PRESENT | L_PTE_XN | L_PTE_DIRTY)
44
45#define FIXMAP_PAGE_NORMAL (pgprot_kernel | L_PTE_XN)
46#define FIXMAP_PAGE_RO (FIXMAP_PAGE_NORMAL | L_PTE_RDONLY)
47
48
49#define FIXMAP_PAGE_IO (FIXMAP_PAGE_COMMON | L_PTE_MT_DEV_SHARED | L_PTE_SHARED)
50#define FIXMAP_PAGE_NOCACHE FIXMAP_PAGE_IO
51
52#define __early_set_fixmap __set_fixmap
53
54#ifdef CONFIG_MMU
55
56void __set_fixmap(enum fixed_addresses idx, phys_addr_t phys, pgprot_t prot);
57void __init early_fixmap_init(void);
58
59#include <asm-generic/fixmap.h>
60
61#else
62
63static inline void early_fixmap_init(void) { }
64
65#endif
66#endif
67