efilib.h

/*-
 * Copyright (c) 2000 Doug Rabson
 * Copyright (c) 2006 Marcel Moolenaar
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * $FreeBSD$
 */
 
#ifndef _LOADER_EFILIB_H
#define _LOADER_EFILIB_H
 
#ifndef __rtems__
#include <stand.h>
#endif /* __rtems__ */
#include <stdbool.h>
#include <sys/queue.h>
#ifdef __rtems__
#include <errno.h>
#include <stdbool.h>
#include <stdlib.h>
#endif /* __rtems__ */
 
extern EFI_HANDLE       IH;
extern EFI_SYSTEM_TABLE     *ST;
extern EFI_BOOT_SERVICES    *BS;
extern EFI_RUNTIME_SERVICES *RS;
 
#ifndef __rtems__
 
extern struct devsw efipart_fddev;
extern struct devsw efipart_cddev;
extern struct devsw efipart_hddev;
extern struct devsw efihttp_dev;
extern struct devsw efinet_dev;
extern struct netif_driver efinetif;
 
/* EFI block device data, included here to help efi_zfs_probe() */
typedef STAILQ_HEAD(pdinfo_list, pdinfo) pdinfo_list_t;
 
typedef struct pdinfo
{
    STAILQ_ENTRY(pdinfo)    pd_link;    /* link in device list */
    pdinfo_list_t       pd_part;    /* list of partitions */
    EFI_HANDLE      pd_handle;
    EFI_HANDLE      pd_alias;
    EFI_DEVICE_PATH     *pd_devpath;
    EFI_BLOCK_IO        *pd_blkio;
    uint32_t        pd_unit;    /* unit number */
    uint32_t        pd_open;    /* reference counter */
    void            *pd_bcache; /* buffer cache data */
    struct pdinfo       *pd_parent; /* Linked items (eg partitions) */
    struct devsw        *pd_devsw;  /* Back pointer to devsw */
} pdinfo_t;
 
pdinfo_list_t *efiblk_get_pdinfo_list(struct devsw *dev);
pdinfo_t *efiblk_get_pdinfo(struct devdesc *dev);
pdinfo_t *efiblk_get_pdinfo_by_handle(EFI_HANDLE h);
pdinfo_t *efiblk_get_pdinfo_by_device_path(EFI_DEVICE_PATH *path);
 
/* libefi.c */
void *efi_get_table(EFI_GUID *tbl);
EFI_STATUS OpenProtocolByHandle(EFI_HANDLE, EFI_GUID *, void **);
 
static inline EFI_STATUS
efi_exit_boot_services(UINTN key)
{
    EFI_STATUS status;
 
    status = BS->ExitBootServices(IH, key);
    if (!EFI_ERROR(status))
        boot_services_active = false;
    return (status);
}
 
int efi_getdev(void **vdev, const char *devspec, const char **path);
 
int efi_register_handles(struct devsw *, EFI_HANDLE *, EFI_HANDLE *, int);
EFI_HANDLE efi_find_handle(struct devsw *, int);
int efi_handle_lookup(EFI_HANDLE, struct devsw **, int *,  uint64_t *);
int efi_handle_update_dev(EFI_HANDLE, struct devsw *, int, uint64_t);
 
EFI_DEVICE_PATH *efi_lookup_image_devpath(EFI_HANDLE);
EFI_DEVICE_PATH *efi_lookup_devpath(EFI_HANDLE);
void efi_close_devpath(EFI_HANDLE);
EFI_HANDLE efi_devpath_handle(EFI_DEVICE_PATH *);
EFI_DEVICE_PATH *efi_devpath_last_node(EFI_DEVICE_PATH *);
EFI_DEVICE_PATH *efi_devpath_trim(EFI_DEVICE_PATH *);
bool efi_devpath_match(EFI_DEVICE_PATH *, EFI_DEVICE_PATH *);
bool efi_devpath_match_node(EFI_DEVICE_PATH *, EFI_DEVICE_PATH *);
bool efi_devpath_is_prefix(EFI_DEVICE_PATH *, EFI_DEVICE_PATH *);
CHAR16 *efi_devpath_name(EFI_DEVICE_PATH *);
void efi_free_devpath_name(CHAR16 *);
bool efi_devpath_same_disk(EFI_DEVICE_PATH *, EFI_DEVICE_PATH *);
EFI_DEVICE_PATH *efi_devpath_to_media_path(EFI_DEVICE_PATH *);
UINTN efi_devpath_length(EFI_DEVICE_PATH *);
EFI_DEVICE_PATH *efi_name_to_devpath(const char *path);
EFI_DEVICE_PATH *efi_name_to_devpath16(CHAR16 *path);
void efi_devpath_free(EFI_DEVICE_PATH *dp);
EFI_HANDLE efi_devpath_to_handle(EFI_DEVICE_PATH *path, EFI_HANDLE *handles, unsigned nhandles);
 
int efi_status_to_errno(EFI_STATUS);
EFI_STATUS errno_to_efi_status(int errno);
 
void efi_time_init(void);
void efi_time_fini(void);
 
int parse_uefi_con_out(void);
EFI_STATUS efi_main(EFI_HANDLE Ximage, EFI_SYSTEM_TABLE* Xsystab);
 
EFI_STATUS main(int argc, CHAR16 *argv[]);
void efi_exit(EFI_STATUS status) __dead2;
 
/* EFI environment initialization. */
void efi_init_environment(void);
 
/* EFI Memory type strings. */
const char *efi_memory_type(EFI_MEMORY_TYPE);
#endif /* __rtems__ */
 
/* CHAR16 utility functions. */
int wcscmp(CHAR16 *, CHAR16 *);
void cpy8to16(const char *, CHAR16 *, size_t);
void cpy16to8(const CHAR16 *, char *, size_t);
 
#ifndef __rtems__
/*
 * Routines for interacting with EFI's env vars in a more unix-like
 * way than the standard APIs. In addition, convenience routines for
 * the loader setting / getting FreeBSD specific variables.
 */
 
EFI_STATUS efi_delenv(EFI_GUID *guid, const char *varname);
EFI_STATUS efi_freebsd_delenv(const char *varname);
EFI_STATUS efi_freebsd_getenv(const char *v, void *data, __size_t *len);
EFI_STATUS efi_getenv(EFI_GUID *g, const char *v, void *data, __size_t *len);
EFI_STATUS efi_global_getenv(const char *v, void *data, __size_t *len);
EFI_STATUS efi_setenv(EFI_GUID *guid, const char *varname, UINT32 attr, void *data, __size_t len);
EFI_STATUS efi_setenv_freebsd_wcs(const char *varname, CHAR16 *valstr);
 
/* guids and names */
bool efi_guid_to_str(const EFI_GUID *, char **);
bool efi_str_to_guid(const char *, EFI_GUID *);
bool efi_name_to_guid(const char *, EFI_GUID *);
bool efi_guid_to_name(EFI_GUID *, char **);
 
/* efipart.c */
int efipart_inithandles(void);
 
#endif /* __rtems__ */
 
#endif  /* _LOADER_EFILIB_H */