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 void efi_char16_printk(efi_system_table_t *, efi_char16_t *); 28 29 efi_status_t efi_open_volume(efi_system_table_t *sys_table_arg, void *__image, 30 void **__fh); 31 32 efi_status_t efi_file_size(efi_system_table_t *sys_table_arg, void *__fh, 33 efi_char16_t *filename_16, void **handle, 34 u64 *file_sz); 35 36 efi_status_t efi_file_read(void *handle, unsigned long *size, void *addr); 37 38 efi_status_t efi_file_close(void *handle); 39 40 unsigned long get_dram_base(efi_system_table_t *sys_table_arg); 41 42 efi_status_t update_fdt(efi_system_table_t *sys_table, void *orig_fdt, 43 unsigned long orig_fdt_size, 44 void *fdt, int new_fdt_size, char *cmdline_ptr, 45 u64 initrd_addr, u64 initrd_size, 46 efi_memory_desc_t *memory_map, 47 unsigned long map_size, unsigned long desc_size, 48 u32 desc_ver); 49 50 efi_status_t allocate_new_fdt_and_exit_boot(efi_system_table_t *sys_table, 51 void *handle, 52 unsigned long *new_fdt_addr, 53 unsigned long max_addr, 54 u64 initrd_addr, u64 initrd_size, 55 char *cmdline_ptr, 56 unsigned long fdt_addr, 57 unsigned long fdt_size); 58 59 void *get_fdt(efi_system_table_t *sys_table, unsigned long *fdt_size); 60 61 void efi_get_virtmap(efi_memory_desc_t *memory_map, unsigned long map_size, 62 unsigned long desc_size, efi_memory_desc_t *runtime_map, 63 int *count); 64 65 efi_status_t efi_get_random_bytes(efi_system_table_t *sys_table, 66 unsigned long size, u8 *out); 67 68 efi_status_t efi_random_alloc(efi_system_table_t *sys_table_arg, 69 unsigned long size, unsigned long align, 70 unsigned long *addr, unsigned long random_seed); 71 72 efi_status_t check_platform_features(efi_system_table_t *sys_table_arg); 73 74 efi_status_t efi_random_get_seed(efi_system_table_t *sys_table_arg); 75 76 #endif 77