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 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 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