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); 14 extern void early_iounmap(void __iomem *addr, unsigned long size); 15 extern void early_memunmap(void *addr, unsigned long size); 16 17 /* 18 * Weak function called by early_ioremap_reset(). It does nothing, but 19 * architectures may provide their own version to do any needed cleanups. 20 */ 21 extern void early_ioremap_shutdown(void); 22 23 #if defined(CONFIG_GENERIC_EARLY_IOREMAP) && defined(CONFIG_MMU) 24 /* Arch-specific initialization */ 25 extern void early_ioremap_init(void); 26 27 /* Generic initialization called by architecture code */ 28 extern void early_ioremap_setup(void); 29 30 /* 31 * Called as last step in paging_init() so library can act 32 * accordingly for subsequent map/unmap requests. 33 */ 34 extern void early_ioremap_reset(void); 35 36 #else 37 static inline void early_ioremap_init(void) { } 38 static inline void early_ioremap_setup(void) { } 39 static inline void early_ioremap_reset(void) { } 40 #endif 41 42 #endif /* _ASM_EARLY_IOREMAP_H_ */ 43