efi/efi.h

   1 #ifndef _SYSLINUX_EFI_H
   2 #define _SYSLINUX_EFI_H
   3
   4 #include <syslinux/config.h>
   5 #include <core.h>
   6 #include <sys/types.h>  /* needed for off_t */
   7 //#include <syslinux/version.h> /* avoid redefinition of __STDC_VERSION__ */
   8
   9 /*
  10  * gnu-efi >= 3.0s enables GNU_EFI_USE_MS_ABI by default, which means
  11  * that we must also enable it if supported by the compiler. Note that
  12  * failing to enable GNU_EFI_USE_MS_ABI if gnu-efi was compiled with
  13  * it on will result in undefined references to uefi_call_wrapper().
  14  *
  15  * The reason we don't attempt to check the version of gnu-efi we're
  16  * building against is because there's no harm in turning it on for
  17  * older versions - it will just be ignored.
  18  */
  19 #if defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 7))
  20   #define GNU_EFI_USE_MS_ABI 1
  21 #endif
  22
  23 #include <efi.h>
  24 #include <efilib.h>
  25 #include <efistdarg.h>
  26
  27 /* Delay for 100 ms */
  28 #define EFI_NOMAP_PRINT_DELAY   100
  29 /* We should keep EFI_NOMAP_PRINT_COUNT at 10 to limit flooding the console */
  30 #define EFI_NOMAP_PRINT_COUNT   10
  31
  32 struct efi_disk_private {
  33         EFI_HANDLE dev_handle;
  34         EFI_BLOCK_IO *bio;
  35         EFI_DISK_IO *dio;
  36 };
  37
  38 struct efi_binding {
  39     EFI_SERVICE_BINDING *binding;
  40     EFI_HANDLE parent;
  41     EFI_HANDLE child;
  42     EFI_HANDLE this;
  43 };
  44
  45 extern EFI_HANDLE image_handle, image_device_handle;
  46
  47 struct screen_info;
  48 extern void setup_screen(struct screen_info *);
  49
  50 extern void efi_write_char(uint8_t, uint8_t);
  51
  52 enum heap;
  53 extern void *efi_malloc(size_t, enum heap, size_t);
  54 extern void *efi_realloc(void *, size_t);
  55 extern void efi_free(void *);
  56
  57 extern struct efi_binding *efi_create_binding(EFI_GUID *, EFI_GUID *);
  58 extern void efi_destroy_binding(struct efi_binding *, EFI_GUID *);
  59
  60 static inline EFI_STATUS
  61 efi_setup_event(EFI_EVENT *ev, EFI_EVENT_NOTIFY func, void *ctx)
  62 {
  63     EFI_STATUS status;
  64
  65     status = uefi_call_wrapper(BS->CreateEvent, 5, EVT_NOTIFY_SIGNAL,
  66                                TPL_CALLBACK, func, ctx, ev);
  67     return status;
  68 }
  69
  70 extern void efi_derivative(enum syslinux_filesystem fs);
  71
  72 struct boot_params;
  73 typedef void (handover_func_t)(void *, EFI_SYSTEM_TABLE *,
  74                                struct boot_params *, unsigned long);
  75
  76 handover_func_t efi_handover_32;
  77 handover_func_t efi_handover_64;
  78 handover_func_t efi_handover;
  79
  80 extern void efi_console_save(void);
  81 extern void efi_console_restore(void);
  82
  83 #endif /* _SYSLINUX_EFI_H */