efi.h

 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
16extern void efi_init(void);
17#else
18#define efi_init()
19#endif
20
21int efi_create_mapping(struct mm_struct *mm, efi_memory_desc_t *md);
22int efi_set_mapping_permissions(struct mm_struct *mm, efi_memory_desc_t *md, bool);
23
24#define ARCH_EFI_IRQ_FLAGS_MASK (SR_IE | SR_SPIE)
25
26/* Load initrd anywhere in system RAM */
27static inline unsigned long efi_get_max_initrd_addr(unsigned long image_addr)
28{
29	return ULONG_MAX;
30}
31
32static inline unsigned long efi_get_kimg_min_align(void)
33{
34	/*
35	 * RISC-V requires the kernel image to placed 2 MB aligned base for 64
36	 * bit and 4MB for 32 bit.
37	 */
38	return IS_ENABLED(CONFIG_64BIT) ? SZ_2M : SZ_4M;
39}
40
41#define EFI_KIMG_PREFERRED_ADDRESS	efi_get_kimg_min_align()
42
43void arch_efi_call_virt_setup(void);
44void arch_efi_call_virt_teardown(void);
45
46unsigned long stext_offset(void);
47
48void efi_icache_sync(unsigned long start, unsigned long end);
49
50#endif /* _ASM_EFI_H */