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