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 /*
  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
  29 void efi_char16_printk(efi_system_table_t *, efi_char16_t *);
  30
  31 efi_status_t efi_open_volume(efi_system_table_t *sys_table_arg, void *__image,
  32                              void **__fh);
  33
  34 unsigned long get_dram_base(efi_system_table_t *sys_table_arg);
  35
  36 efi_status_t allocate_new_fdt_and_exit_boot(efi_system_table_t *sys_table,
  37                                             void *handle,
  38                                             unsigned long *new_fdt_addr,
  39                                             unsigned long max_addr,
  40                                             u64 initrd_addr, u64 initrd_size,
  41                                             char *cmdline_ptr,
  42                                             unsigned long fdt_addr,
  43                                             unsigned long fdt_size);
  44
  45 void *get_fdt(efi_system_table_t *sys_table, unsigned long *fdt_size);
  46
  47 void efi_get_virtmap(efi_memory_desc_t *memory_map, unsigned long map_size,
  48                      unsigned long desc_size, efi_memory_desc_t *runtime_map,
  49                      int *count);
  50
  51 efi_status_t efi_get_random_bytes(efi_system_table_t *sys_table,
  52                                   unsigned long size, u8 *out);
  53
  54 efi_status_t efi_random_alloc(efi_system_table_t *sys_table_arg,
  55                               unsigned long size, unsigned long align,
  56                               unsigned long *addr, unsigned long random_seed);
  57
  58 efi_status_t check_platform_features(efi_system_table_t *sys_table_arg);
  59
  60 efi_status_t efi_random_get_seed(efi_system_table_t *sys_table_arg);
  61
  62 #endif