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 */ 10extern void __iomem *early_ioremap(resource_size_t phys_addr, 11 unsigned long size); 12extern void *early_memremap(resource_size_t phys_addr, 13 unsigned long size); 14extern void early_iounmap(void __iomem *addr, unsigned long size); 15extern 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 */ 21extern void early_ioremap_shutdown(void); 22 23#if defined(CONFIG_GENERIC_EARLY_IOREMAP) && defined(CONFIG_MMU) 24/* Arch-specific initialization */ 25extern void early_ioremap_init(void); 26 27/* Generic initialization called by architecture code */ 28extern 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 */ 34extern void early_ioremap_reset(void); 35 36#else 37static inline void early_ioremap_init(void) { } 38static inline void early_ioremap_setup(void) { } 39static inline void early_ioremap_reset(void) { } 40#endif 41 42#endif /* _ASM_EARLY_IOREMAP_H_ */ 43