1 
2 #ifndef _DRIVERS_FIRMWARE_EFI_EFISTUB_H
3 #define _DRIVERS_FIRMWARE_EFI_EFISTUB_H
4 
5 /* error code which can't be mistaken for valid address */
6 #define EFI_ERROR	(~0UL)
7 
8 /*
9  * __init annotations should not be used in the EFI stub, since the code is
10  * either included in the decompressor (x86, ARM) where they have no effect,
11  * or the whole stub is __init annotated at the section level (arm64), by
12  * renaming the sections, in which case the __init annotation will be
13  * redundant, and will result in section names like .init.init.text, and our
14  * linker script does not expect that.
15  */
16 #undef __init
17 
18 void efi_char16_printk(efi_system_table_t *, efi_char16_t *);
19 
20 efi_status_t efi_open_volume(efi_system_table_t *sys_table_arg, void *__image,
21 			     void **__fh);
22 
23 efi_status_t efi_file_size(efi_system_table_t *sys_table_arg, void *__fh,
24 			   efi_char16_t *filename_16, void **handle,
25 			   u64 *file_sz);
26 
27 efi_status_t efi_file_read(void *handle, unsigned long *size, void *addr);
28 
29 efi_status_t efi_file_close(void *handle);
30 
31 unsigned long get_dram_base(efi_system_table_t *sys_table_arg);
32 
33 efi_status_t update_fdt(efi_system_table_t *sys_table, void *orig_fdt,
34 			unsigned long orig_fdt_size,
35 			void *fdt, int new_fdt_size, char *cmdline_ptr,
36 			u64 initrd_addr, u64 initrd_size,
37 			efi_memory_desc_t *memory_map,
38 			unsigned long map_size, unsigned long desc_size,
39 			u32 desc_ver);
40 
41 efi_status_t allocate_new_fdt_and_exit_boot(efi_system_table_t *sys_table,
42 					    void *handle,
43 					    unsigned long *new_fdt_addr,
44 					    unsigned long max_addr,
45 					    u64 initrd_addr, u64 initrd_size,
46 					    char *cmdline_ptr,
47 					    unsigned long fdt_addr,
48 					    unsigned long fdt_size);
49 
50 void *get_fdt(efi_system_table_t *sys_table, unsigned long *fdt_size);
51 
52 void efi_get_virtmap(efi_memory_desc_t *memory_map, unsigned long map_size,
53 		     unsigned long desc_size, efi_memory_desc_t *runtime_map,
54 		     int *count);
55 
56 efi_status_t efi_get_random_bytes(efi_system_table_t *sys_table,
57 				  unsigned long size, u8 *out);
58 
59 efi_status_t efi_random_alloc(efi_system_table_t *sys_table_arg,
60 			      unsigned long size, unsigned long align,
61 			      unsigned long *addr, unsigned long random_seed);
62 
63 efi_status_t check_platform_features(efi_system_table_t *sys_table_arg);
64 
65 #endif
66