[efi] Generalise EFI entropy generation to non-x86 CPUs
[ipxe.git] / src / interface / efi / efidrvprefix.c
1 /*
2 * Copyright (C) 2009 Michael Brown <mbrown@fensystems.co.uk>.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation; either version 2 of the
7 * License, or any later version.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
17 * 02110-1301, USA.
18 */
19
20 FILE_LICENCE ( GPL2_OR_LATER );
21
22 #include <stdlib.h>
23 #include <ipxe/init.h>
24 #include <ipxe/device.h>
25 #include <ipxe/efi/efi.h>
26 #include <ipxe/efi/efi_driver.h>
27
28 /**
29 * EFI entry point
30 *
31 * @v image_handle Image handle
32 * @v systab System table
33 * @ret efirc EFI return status code
34 */
35 EFI_STATUS EFIAPI _efidrv_start ( EFI_HANDLE image_handle,
36 EFI_SYSTEM_TABLE *systab ) {
37 EFI_STATUS efirc;
38
39 /* Initialise EFI environment */
40 if ( ( efirc = efi_init ( image_handle, systab ) ) != 0 )
41 return efirc;
42
43 /* Initialise iPXE environment */
44 initialise();
45 startup();
46
47 return 0;
48 }
49
50 /**
51 * Probe EFI root bus
52 *
53 * @v rootdev EFI root device
54 */
55 static int efi_probe ( struct root_device *rootdev __unused ) {
56
57 /* Do nothing */
58 return 0;
59 }
60
61 /**
62 * Remove EFI root bus
63 *
64 * @v rootdev EFI root device
65 */
66 static void efi_remove ( struct root_device *rootdev __unused ) {
67
68 efi_driver_disconnect_all();
69 }
70
71 /** EFI root device driver */
72 static struct root_driver efi_root_driver = {
73 .probe = efi_probe,
74 .remove = efi_remove,
75 };
76
77 /** EFI root device */
78 struct root_device efi_root_device __root_device = {
79 .dev = { .name = "EFI" },
80 .driver = &efi_root_driver,
81 };