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 #include <asm/pgalloc.h> 14 15 #ifdef CONFIG_EFI 16 extern void efi_init(void); 17 #else 18 #define efi_init() 19 #endif 20 21 int efi_create_mapping(struct mm_struct *mm, efi_memory_desc_t *md); 22 int efi_set_mapping_permissions(struct mm_struct *mm, efi_memory_desc_t *md); 23 24 #define arch_efi_call_virt_setup() ({ \ 25 sync_kernel_mappings(efi_mm.pgd); \ 26 efi_virtmap_load(); \ 27 }) 28 #define arch_efi_call_virt_teardown() efi_virtmap_unload() 29 30 #define ARCH_EFI_IRQ_FLAGS_MASK (SR_IE | SR_SPIE) 31 32 /* Load initrd anywhere in system RAM */ 33 static inline unsigned long efi_get_max_initrd_addr(unsigned long image_addr) 34 { 35 return ULONG_MAX; 36 } 37 38 #define alloc_screen_info(x...) (&screen_info) 39 40 static inline void free_screen_info(struct screen_info *si) 41 { 42 } 43 44 void efi_virtmap_load(void); 45 void efi_virtmap_unload(void); 46 47 #endif /* _ASM_EFI_H */ 48