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 /* 19 * Allow the platform to override the allocation granularity: this allows 20 * systems that have the capability to run with a larger page size to deal 21 * with the allocations for initrd and fdt more efficiently. 22 */ 23 #ifndef EFI_ALLOC_ALIGN 24 #define EFI_ALLOC_ALIGN EFI_PAGE_SIZE 25 #endif 26 27 extern int __pure nokaslr(void); 28 extern int __pure is_quiet(void); 29 30 #define pr_efi(sys_table, msg) do { \ 31 if (!is_quiet()) efi_printk(sys_table, "EFI stub: "msg); \ 32 } while (0) 33 34 #define pr_efi_err(sys_table, msg) efi_printk(sys_table, "EFI stub: ERROR: "msg) 35 36 void efi_char16_printk(efi_system_table_t *, efi_char16_t *); 37 38 efi_status_t efi_open_volume(efi_system_table_t *sys_table_arg, void *__image, 39 void **__fh); 40 41 unsigned long get_dram_base(efi_system_table_t *sys_table_arg); 42 43 efi_status_t allocate_new_fdt_and_exit_boot(efi_system_table_t *sys_table, 44 void *handle, 45 unsigned long *new_fdt_addr, 46 unsigned long max_addr, 47 u64 initrd_addr, u64 initrd_size, 48 char *cmdline_ptr, 49 unsigned long fdt_addr, 50 unsigned long fdt_size); 51 52 void *get_fdt(efi_system_table_t *sys_table, unsigned long *fdt_size); 53 54 void efi_get_virtmap(efi_memory_desc_t *memory_map, unsigned long map_size, 55 unsigned long desc_size, efi_memory_desc_t *runtime_map, 56 int *count); 57 58 efi_status_t efi_get_random_bytes(efi_system_table_t *sys_table, 59 unsigned long size, u8 *out); 60 61 efi_status_t efi_random_alloc(efi_system_table_t *sys_table_arg, 62 unsigned long size, unsigned long align, 63 unsigned long *addr, unsigned long random_seed); 64 65 efi_status_t check_platform_features(efi_system_table_t *sys_table_arg); 66 67 efi_status_t efi_random_get_seed(efi_system_table_t *sys_table_arg); 68 69 #endif 70