/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_EARLY_IOREMAP_H_
#define _ASM_EARLY_IOREMAP_H_
#include <linux/types.h>
/*
* early_ioremap() and early_iounmap() are for temporary early boot-time
* mappings, before the real ioremap() is functional.
*/
extern void __iomem *early_ioremap(resource_size_t phys_addr,
unsigned long size);
extern void *early_memremap(resource_size_t phys_addr,
unsigned long size);
extern void *early_memremap_ro(resource_size_t phys_addr,
unsigned long size);
extern void *early_memremap_prot(resource_size_t phys_addr,
unsigned long size, unsigned long prot_val);
extern void early_iounmap(void __iomem *addr, unsigned long size);
extern void early_memunmap(void *addr, unsigned long size);
#if defined (CONFIG_GENERIC_EARLY_IOREMAP) && defined (CONFIG_MMU)
/* Arch-specific initialization */
extern void early_ioremap_init(void );
/* Generic initialization called by architecture code */
extern void early_ioremap_setup(void );
/*
* Called as last step in paging_init() so library can act
* accordingly for subsequent map/unmap requests.
*/
extern void early_ioremap_reset(void );
/*
* Early copy from unmapped memory to kernel mapped memory.
*/
extern int copy_from_early_mem(void *dest, phys_addr_t src,
unsigned long size);
#else
static inline void early_ioremap_init(void ) { }
static inline void early_ioremap_setup(void ) { }
static inline void early_ioremap_reset(void ) { }
#endif
#endif /* _ASM_EARLY_IOREMAP_H_ */
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