drivers/firmware/efi/libstub/efistub.h

   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