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
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
|
/*
* 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/init.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_autoexec.h>
#include <ipxe/efi/efi_cachedhcp.h>
#include <ipxe/efi/efi_watchdog.h>
#include <ipxe/efi/efi_veto.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 stack cookie */
efi_init_stack_guard ( image_handle );
/* Initialise EFI environment */
if ( ( efirc = efi_init ( image_handle, systab ) ) != 0 )
goto err_init;
/* 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;
}
/**
* Initialise EFI application
*
*/
static void efi_init_application ( void ) {
EFI_HANDLE device = efi_loaded_image->DeviceHandle;
EFI_DEVICE_PATH_PROTOCOL *devpath = efi_loaded_image_path;
EFI_DEVICE_PATH_PROTOCOL *filepath = efi_loaded_image->FilePath;
/* Identify autoboot device, if any */
efi_set_autoboot_ll_addr ( device, devpath );
/* Store cached DHCP packet, if any */
efi_cachedhcp_record ( device, devpath );
/* Load autoexec script, if any */
efi_autoexec_load ( device, filepath );
}
/** EFI application initialisation function */
struct init_fn efi_init_application_fn __init_fn ( INIT_NORMAL ) = {
.initialise = efi_init_application,
};
/**
* Probe EFI root bus
*
* @v rootdev EFI root device
*/
static int efi_probe ( struct root_device *rootdev __unused ) {
/* Remove any vetoed drivers */
efi_veto();
/* 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,
};
|
