arch/riscv/include/asm/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
  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 */