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 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 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