5 #include <asm/mmu_context.h>
7 #include <asm/ptrace.h>
8 #include <asm/tlbflush.h>
11 extern void efi_init(void);
16 int efi_create_mapping(struct mm_struct *mm, efi_memory_desc_t *md);
18 #define efi_set_mapping_permissions efi_create_mapping
20 #define arch_efi_call_virt_setup() \
22 kernel_neon_begin(); \
26 #define arch_efi_call_virt(f, args...) \
29 __f = efi.systab->runtime->f; \
33 #define arch_efi_call_virt_teardown() \
35 efi_virtmap_unload(); \
39 #define ARCH_EFI_IRQ_FLAGS_MASK (PSR_D_BIT | PSR_A_BIT | PSR_I_BIT | PSR_F_BIT)
41 /* arch specific definitions used by the stub code */
44 * AArch64 requires the DTB to be 8-byte aligned in the first 512MiB from
45 * start of kernel and may not cross a 2MiB boundary. We set alignment to
46 * 2MiB so we know it won't cross a 2MiB boundary.
48 #define EFI_FDT_ALIGN SZ_2M /* used by allocate_new_fdt_and_exit_boot() */
49 #define MAX_FDT_OFFSET SZ_512M
51 #define efi_call_early(f, ...) sys_table_arg->boottime->f(__VA_ARGS__)
52 #define __efi_call_early(f, ...) f(__VA_ARGS__)
53 #define efi_is_64bit() (true)
55 #define alloc_screen_info(x...) &screen_info
56 #define free_screen_info(x...)
58 static inline void efifb_setup_from_dmi(struct screen_info *si, const char *opt)
62 #define EFI_ALLOC_ALIGN SZ_64K
65 * On ARM systems, virtually remapped UEFI runtime services are set up in two
67 * - The stub retrieves the final version of the memory map from UEFI, populates
68 * the virt_addr fields and calls the SetVirtualAddressMap() [SVAM] runtime
69 * service to communicate the new mapping to the firmware (Note that the new
70 * mapping is not live at this time)
71 * - During an early initcall(), the EFI system table is permanently remapped
72 * and the virtual remapping of the UEFI Runtime Services regions is loaded
73 * into a private set of page tables. If this all succeeds, the Runtime
74 * Services are enabled and the EFI_RUNTIME_SERVICES bit set.
77 static inline void efi_set_pgd(struct mm_struct *mm)
79 switch_mm(NULL, mm, NULL);
82 void efi_virtmap_load(void);
83 void efi_virtmap_unload(void);
85 #endif /* _ASM_EFI_H */