55 lines
1.3 KiB
C
55 lines
1.3 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2020 Western Digital Corporation or its affiliates.
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*/
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#ifndef _ASM_EFI_H
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#define _ASM_EFI_H
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#include <asm/csr.h>
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#include <asm/io.h>
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#include <asm/mmu_context.h>
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#include <asm/ptrace.h>
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#include <asm/tlbflush.h>
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#include <asm/pgalloc.h>
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#ifdef CONFIG_EFI
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extern void efi_init(void);
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#else
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#define efi_init()
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#endif
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int efi_create_mapping(struct mm_struct *mm, efi_memory_desc_t *md);
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int efi_set_mapping_permissions(struct mm_struct *mm, efi_memory_desc_t *md, bool);
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#define arch_efi_call_virt_setup() ({ \
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sync_kernel_mappings(efi_mm.pgd); \
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efi_virtmap_load(); \
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})
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#define arch_efi_call_virt_teardown() efi_virtmap_unload()
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#define ARCH_EFI_IRQ_FLAGS_MASK (SR_IE | SR_SPIE)
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/* Load initrd anywhere in system RAM */
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static inline unsigned long efi_get_max_initrd_addr(unsigned long image_addr)
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{
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return ULONG_MAX;
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}
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static inline unsigned long efi_get_kimg_min_align(void)
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{
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/*
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* RISC-V requires the kernel image to placed 2 MB aligned base for 64
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* bit and 4MB for 32 bit.
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*/
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return IS_ENABLED(CONFIG_64BIT) ? SZ_2M : SZ_4M;
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}
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#define EFI_KIMG_PREFERRED_ADDRESS efi_get_kimg_min_align()
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void efi_virtmap_load(void);
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void efi_virtmap_unload(void);
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unsigned long stext_offset(void);
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#endif /* _ASM_EFI_H */
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