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Edit File: early_ioremap.h

/* 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); /* * Weak function called by early_ioremap_reset(). It does nothing, but * architectures may provide their own version to do any needed cleanups. */ extern void early_ioremap_shutdown(void); #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 void 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_ */