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 at enough distance from DRAM start */ 31 static inline unsigned long efi_get_max_initrd_addr(unsigned long image_addr) 32 { 33 return image_addr + SZ_256M; 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