Commit | Line | Data |
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9e5c33d7 MS |
1 | #ifndef _ASM_EARLY_IOREMAP_H_ |
2 | #define _ASM_EARLY_IOREMAP_H_ | |
3 | ||
4 | #include <linux/types.h> | |
5 | ||
6 | /* | |
7 | * early_ioremap() and early_iounmap() are for temporary early boot-time | |
8 | * mappings, before the real ioremap() is functional. | |
9 | */ | |
10 | extern void __iomem *early_ioremap(resource_size_t phys_addr, | |
11 | unsigned long size); | |
12 | extern void *early_memremap(resource_size_t phys_addr, | |
13 | unsigned long size); | |
2592dbbb JG |
14 | extern void *early_memremap_ro(resource_size_t phys_addr, |
15 | unsigned long size); | |
9e5c33d7 MS |
16 | extern void early_iounmap(void __iomem *addr, unsigned long size); |
17 | extern void early_memunmap(void *addr, unsigned long size); | |
18 | ||
19 | /* | |
20 | * Weak function called by early_ioremap_reset(). It does nothing, but | |
21 | * architectures may provide their own version to do any needed cleanups. | |
22 | */ | |
23 | extern void early_ioremap_shutdown(void); | |
24 | ||
25 | #if defined(CONFIG_GENERIC_EARLY_IOREMAP) && defined(CONFIG_MMU) | |
26 | /* Arch-specific initialization */ | |
27 | extern void early_ioremap_init(void); | |
28 | ||
29 | /* Generic initialization called by architecture code */ | |
30 | extern void early_ioremap_setup(void); | |
31 | ||
32 | /* | |
33 | * Called as last step in paging_init() so library can act | |
34 | * accordingly for subsequent map/unmap requests. | |
35 | */ | |
36 | extern void early_ioremap_reset(void); | |
37 | ||
6b0f68e3 MS |
38 | /* |
39 | * Early copy from unmapped memory to kernel mapped memory. | |
40 | */ | |
41 | extern void copy_from_early_mem(void *dest, phys_addr_t src, | |
42 | unsigned long size); | |
43 | ||
9e5c33d7 MS |
44 | #else |
45 | static inline void early_ioremap_init(void) { } | |
46 | static inline void early_ioremap_setup(void) { } | |
47 | static inline void early_ioremap_reset(void) { } | |
48 | #endif | |
49 | ||
50 | #endif /* _ASM_EARLY_IOREMAP_H_ */ |