^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright (C) 2020 Western Digital Corporation or its affiliates.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #ifndef _ASM_EFI_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #define _ASM_EFI_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <asm/csr.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <asm/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <asm/mmu_context.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <asm/ptrace.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <asm/tlbflush.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #ifdef CONFIG_EFI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) extern void efi_init(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #define efi_init()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) int efi_create_mapping(struct mm_struct *mm, efi_memory_desc_t *md);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) int efi_set_mapping_permissions(struct mm_struct *mm, efi_memory_desc_t *md);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define arch_efi_call_virt_setup() efi_virtmap_load()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define arch_efi_call_virt_teardown() efi_virtmap_unload()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define arch_efi_call_virt(p, f, args...) p->f(args)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define ARCH_EFI_IRQ_FLAGS_MASK (SR_IE | SR_SPIE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) /* on RISC-V, the FDT may be located anywhere in system RAM */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) static inline unsigned long efi_get_max_fdt_addr(unsigned long image_addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) return ULONG_MAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) /* Load initrd at enough distance from DRAM start */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) static inline unsigned long efi_get_max_initrd_addr(unsigned long image_addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) return image_addr + SZ_256M;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #define alloc_screen_info(x...) (&screen_info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) static inline void free_screen_info(struct screen_info *si)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) static inline void efifb_setup_from_dmi(struct screen_info *si, const char *opt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) void efi_virtmap_load(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) void efi_virtmap_unload(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #endif /* _ASM_EFI_H */