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
27 #include <stdbool.h>
28
29 #include <efi.h>
30 #include <efilib.h>
31
32 #include "efi_driver_utils.h"
33
34 static EFI_GUID DriverBindingProtocolGUID = DRIVER_BINDING_PROTOCOL;
35
36 EFI_STATUS
connect_controllers(EFI_GUID * filter)37 connect_controllers(EFI_GUID *filter)
38 {
39 EFI_STATUS status;
40 EFI_HANDLE *handles;
41 UINTN nhandles, i, hsize;
42
43 nhandles = 0;
44 hsize = 0;
45 status = BS->LocateHandle(ByProtocol, filter, NULL,
46 &hsize, NULL);
47
48 if(status != EFI_BUFFER_TOO_SMALL) {
49 return (status);
50 }
51
52 handles = malloc(hsize);
53 nhandles = hsize / sizeof(EFI_HANDLE);
54
55 status = BS->LocateHandle(ByProtocol, filter, NULL,
56 &hsize, handles);
57
58 if(EFI_ERROR(status)) {
59 return (status);
60 }
61
62 for(i = 0; i < nhandles; i++) {
63 BS->ConnectController(handles[i], NULL, NULL, true);
64 }
65
66 free(handles);
67
68 return (status);
69 }
70
71 EFI_STATUS
install_driver(EFI_DRIVER_BINDING * driver)72 install_driver(EFI_DRIVER_BINDING *driver)
73 {
74 EFI_STATUS status;
75
76 driver->ImageHandle = IH;
77 driver->DriverBindingHandle = NULL;
78 status = BS->InstallMultipleProtocolInterfaces(
79 &(driver->DriverBindingHandle),
80 &DriverBindingProtocolGUID, driver,
81 NULL);
82
83 if (EFI_ERROR(status)) {
84 printf("Failed to install driver (%ld)!\n",
85 EFI_ERROR_CODE(status));
86 }
87
88 return (status);
89 }
90