iPXE
efidrvprefix.c
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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  */
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 
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 };
EFI driver interface.
FILE_LICENCE(GPL2_OR_LATER)
static struct root_driver efi_root_driver
EFI root device driver.
Definition: efidrvprefix.c:72
char name[40]
Name.
Definition: device.h:75
A root device.
Definition: device.h:94
struct device dev
Device chain.
Definition: device.h:99
void initialise(void)
Initialise iPXE.
Definition: init.c:52
EFI_STATUS EFIAPI _efidrv_start(EFI_HANDLE image_handle, EFI_SYSTEM_TABLE *systab)
EFI entry point.
Definition: efidrvprefix.c:35
#define EFIAPI
void efi_driver_disconnect_all(void)
Disconnect EFI driver from all possible devices.
Definition: efi_driver.c:562
static void efi_remove(struct root_device *rootdev __unused)
Remove EFI root bus.
Definition: efidrvprefix.c:66
static int efi_probe(struct root_device *rootdev __unused)
Probe EFI root bus.
Definition: efidrvprefix.c:55
A root device driver.
Definition: device.h:107
EFI System Table.
Definition: UefiSpec.h:1949
int(* probe)(struct root_device *rootdev)
Add root device.
Definition: device.h:116
EFI API.
#define __unused
Declare a variable or data structure as unused.
Definition: compiler.h:573
struct root_device efi_root_device __root_device
EFI root device.
Definition: efidrvprefix.c:78
RETURN_STATUS EFI_STATUS
Function return status for EFI API.
Definition: UefiBaseType.h:35
Device model.
EFI_STATUS efi_init(EFI_HANDLE image_handle, EFI_SYSTEM_TABLE *systab)
Initialise EFI environment.
Definition: efi_init.c:97
Definition: efi.h:55
void startup(void)
Start up iPXE.
Definition: init.c:67