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;
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
efi_setup_event(EFI_EVENT * ev,EFI_EVENT_NOTIFY func,void * ctx)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 */
84