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 * $FreeBSD$
27 */
28
29 #include <stdbool.h>
30
31 #include <efi.h>
32 #include <efilib.h>
33
34 #include "efi_driver_utils.h"
35
36 static EFI_GUID DriverBindingProtocolGUID = DRIVER_BINDING_PROTOCOL;
37
38 EFI_STATUS
connect_controllers(EFI_GUID * filter)39 connect_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 if (handles == NULL)
56 return (EFI_OUT_OF_RESOURCES);
57 nhandles = hsize / sizeof(EFI_HANDLE);
58
59 status = BS->LocateHandle(ByProtocol, filter, NULL,
60 &hsize, handles);
61
62 if(EFI_ERROR(status)) {
63 return (status);
64 }
65
66 for(i = 0; i < nhandles; i++) {
67 BS->ConnectController(handles[i], NULL, NULL, true);
68 }
69
70 free(handles);
71
72 return (status);
73 }
74
75 EFI_STATUS
install_driver(EFI_DRIVER_BINDING * driver)76 install_driver(EFI_DRIVER_BINDING *driver)
77 {
78 EFI_STATUS status;
79
80 driver->ImageHandle = IH;
81 driver->DriverBindingHandle = NULL;
82 status = BS->InstallMultipleProtocolInterfaces(
83 &(driver->DriverBindingHandle),
84 &DriverBindingProtocolGUID, driver,
85 NULL);
86
87 if (EFI_ERROR(status)) {
88 printf("Failed to install driver (%ld)!\n",
89 EFI_ERROR_CODE(status));
90 }
91
92 return (status);
93 }
94