1/*-
2 * Copyright (c) 2017 Eric McCorkle
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: stable/11/stand/efi/libefi/efi_driver_utils.c 329114 2018-02-11 02:27:50Z kevans $
27 */
28
29#include <stdbool.h>
30
31#include <efi.h>
32#include <efilib.h>
33
34#include "efi_driver_utils.h"
35
36static EFI_GUID DriverBindingProtocolGUID = DRIVER_BINDING_PROTOCOL;
37
38EFI_STATUS
39connect_controllers(EFI_GUID *filter)
40{
41        EFI_STATUS status;
42        EFI_HANDLE *handles;
43        UINTN nhandles, i, hsize;
44
45        nhandles = 0;
46        hsize = 0;
47        status = BS->LocateHandle(ByProtocol, filter, NULL,
48                     &hsize, NULL);
49
50        if(status != EFI_BUFFER_TOO_SMALL) {
51                return (status);
52        }
53
54        handles = malloc(hsize);
55        nhandles = hsize / sizeof(EFI_HANDLE);
56
57        status = BS->LocateHandle(ByProtocol, filter, NULL,
58                     &hsize, handles);
59
60        if(EFI_ERROR(status)) {
61                return (status);
62        }
63
64        for(i = 0; i < nhandles; i++) {
65                BS->ConnectController(handles[i], NULL, NULL, true);
66        }
67
68        free(handles);
69
70        return (status);
71}
72
73EFI_STATUS
74install_driver(EFI_DRIVER_BINDING *driver)
75{
76        EFI_STATUS status;
77
78        driver->ImageHandle = IH;
79        driver->DriverBindingHandle = NULL;
80        status = BS->InstallMultipleProtocolInterfaces(
81            &(driver->DriverBindingHandle),
82            &DriverBindingProtocolGUID, driver,
83            NULL);
84
85        if (EFI_ERROR(status)) {
86                printf("Failed to install driver (%ld)!\n",
87                    EFI_ERROR_CODE(status));
88        }
89
90        return (status);
91}
92