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Linux/arch/riscv/include/asm/efi.h

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  1 /* SPDX-License-Identifier: GPL-2.0 */
  2 /*
  3  * Copyright (C) 2020 Western Digital Corporation or its affiliates.
  4  */
  5 #ifndef _ASM_EFI_H
  6 #define _ASM_EFI_H
  7 
  8 #include <asm/csr.h>
  9 #include <asm/io.h>
 10 #include <asm/mmu_context.h>
 11 #include <asm/ptrace.h>
 12 #include <asm/tlbflush.h>
 13 
 14 #ifdef CONFIG_EFI
 15 extern void efi_init(void);
 16 #else
 17 #define efi_init()
 18 #endif
 19 
 20 int efi_create_mapping(struct mm_struct *mm, efi_memory_desc_t *md);
 21 int efi_set_mapping_permissions(struct mm_struct *mm, efi_memory_desc_t *md);
 22 
 23 #define arch_efi_call_virt_setup()      efi_virtmap_load()
 24 #define arch_efi_call_virt_teardown()   efi_virtmap_unload()
 25 
 26 #define arch_efi_call_virt(p, f, args...) p->f(args)
 27 
 28 #define ARCH_EFI_IRQ_FLAGS_MASK (SR_IE | SR_SPIE)
 29 
 30 /* Load initrd anywhere in system RAM */
 31 static inline unsigned long efi_get_max_initrd_addr(unsigned long image_addr)
 32 {
 33         return ULONG_MAX;
 34 }
 35 
 36 #define alloc_screen_info(x...)         (&screen_info)
 37 
 38 static inline void free_screen_info(struct screen_info *si)
 39 {
 40 }
 41 
 42 static inline void efifb_setup_from_dmi(struct screen_info *si, const char *opt)
 43 {
 44 }
 45 
 46 void efi_virtmap_load(void);
 47 void efi_virtmap_unload(void);
 48 
 49 #endif /* _ASM_EFI_H */
 50 

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