1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
|
/*
* Copyright (C) 2009 Michael Brown <mbrown@fensystems.co.uk>.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
FILE_LICENCE ( GPL2_OR_LATER );
#include <stdlib.h>
#include <errno.h>
#include <ipxe/device.h>
#include <ipxe/efi/efi.h>
#include <ipxe/efi/efi_driver.h>
#include <ipxe/efi/efi_snp.h>
#include <ipxe/efi/efi_autoboot.h>
#include <ipxe/efi/efi_watchdog.h>
#include <ipxe/efi/efi_blacklist.h>
/**
* EFI entry point
*
* @v image_handle Image handle
* @v systab System table
* @ret efirc EFI return status code
*/
EFI_STATUS EFIAPI _efi_start ( EFI_HANDLE image_handle,
EFI_SYSTEM_TABLE *systab ) {
EFI_STATUS efirc;
int rc;
/* Initialise EFI environment */
if ( ( efirc = efi_init ( image_handle, systab ) ) != 0 )
goto err_init;
/* Record autoboot device (if any) */
efi_set_autoboot();
/* Claim SNP devices for use by iPXE */
efi_snp_claim();
/* Start watchdog holdoff timer */
efi_watchdog_start();
/* Call to main() */
if ( ( rc = main() ) != 0 ) {
efirc = EFIRC ( rc );
goto err_main;
}
err_main:
efi_watchdog_stop();
efi_snp_release();
efi_loaded_image->Unload ( image_handle );
efi_driver_reconnect_all();
err_init:
return efirc;
}
/**
* Probe EFI root bus
*
* @v rootdev EFI root device
*/
static int efi_probe ( struct root_device *rootdev __unused ) {
/* Unloaded any blacklisted drivers */
efi_unload_blacklist();
/* Connect our drivers */
return efi_driver_connect_all();
}
/**
* Remove EFI root bus
*
* @v rootdev EFI root device
*/
static void efi_remove ( struct root_device *rootdev __unused ) {
/* Disconnect our drivers */
efi_driver_disconnect_all();
}
/** EFI root device driver */
static struct root_driver efi_root_driver = {
.probe = efi_probe,
.remove = efi_remove,
};
/** EFI root device */
struct root_device efi_root_device __root_device = {
.dev = { .name = "EFI" },
.driver = &efi_root_driver,
};
|
