| 1 |
|
| 2 | #ifndef _ASM_EARLY_IOREMAP_H_
|
| 3 | #define _ASM_EARLY_IOREMAP_H_
|
| 4 |
|
| 5 | #include <linux/types.h>
|
| 6 |
|
| 7 | |
| 8 | * early_ioremap() and early_iounmap() are for temporary early boot-time
|
| 9 | * mappings, before the real ioremap() is functional.
|
| 10 |
|
| 11 | extern void __iomem *early_ioremap(resource_size_t phys_addr,
|
| 12 | unsigned long size);
|
| 13 | extern void *early_memremap(resource_size_t phys_addr,
|
| 14 | unsigned long size);
|
| 15 | extern void *early_memremap_ro(resource_size_t phys_addr,
|
| 16 | unsigned long size);
|
| 17 | extern void *early_memremap_prot(resource_size_t phys_addr,
|
| 18 | unsigned long size, unsigned long prot_val);
|
| 19 | extern void early_iounmap(void __iomem *addr, unsigned long size);
|
| 20 | extern void early_memunmap(void *addr, unsigned long size);
|
| 21 |
|
| 22 | #if defined(CONFIG_GENERIC_EARLY_IOREMAP) && defined(CONFIG_MMU)
|
| 23 |
|
| 24 | extern void early_ioremap_init(void);
|
| 25 |
|
| 26 |
|
| 27 | extern void early_ioremap_setup(void);
|
| 28 |
|
| 29 | |
| 30 | * Called as last step in paging_init() so library can act
|
| 31 | * accordingly for subsequent map/unmap requests.
|
| 32 |
|
| 33 | extern void early_ioremap_reset(void);
|
| 34 |
|
| 35 | |
| 36 | * Early copy from unmapped memory to kernel mapped memory.
|
| 37 |
|
| 38 | extern int copy_from_early_mem(void *dest, phys_addr_t src,
|
| 39 | unsigned long size);
|
| 40 |
|
| 41 | #else
|
| 42 | static inline void early_ioremap_init(void) { }
|
| 43 | static inline void early_ioremap_setup(void) { }
|
| 44 | static inline void early_ioremap_reset(void) { }
|
| 45 | #endif
|
| 46 |
|
| 47 | #endif
|