1 #include <stdint.h>
2 #include <string.h>
3 #include <stdlib.h>
4 #include <stdio.h>
5 #include <errno.h>
6 #include <gpxe/iscsi.h>
7 #include <gpxe/netdevice.h>
8 #include <gpxe/ibft.h>
9 #include <gpxe/sanboot.h>
10 #include <int13.h>
11
12 FILE_LICENCE ( GPL2_OR_LATER );
13
iscsiboot(const char * root_path)14 static int iscsiboot ( const char *root_path ) {
15 struct scsi_device *scsi;
16 struct int13_drive *drive;
17 int rc;
18
19 scsi = zalloc ( sizeof ( *scsi ) );
20 if ( ! scsi ) {
21 rc = -ENOMEM;
22 goto err_alloc_scsi;
23 }
24 drive = zalloc ( sizeof ( *drive ) );
25 if ( ! drive ) {
26 rc = -ENOMEM;
27 goto err_alloc_drive;
28 }
29
30 if ( ( rc = iscsi_attach ( scsi, root_path ) ) != 0 ) {
31 printf ( "Could not attach iSCSI device: %s\n",
32 strerror ( rc ) );
33 goto err_attach;
34 }
35 if ( ( rc = init_scsidev ( scsi ) ) != 0 ) {
36 printf ( "Could not initialise iSCSI device: %s\n",
37 strerror ( rc ) );
38 goto err_init;
39 }
40
41 drive->blockdev = &scsi->blockdev;
42
43 /* FIXME: ugly, ugly hack */
44 struct net_device *netdev = last_opened_netdev();
45 struct iscsi_session *iscsi =
46 container_of ( scsi->backend, struct iscsi_session, refcnt );
47 ibft_fill_data ( netdev, iscsi );
48
49 register_int13_drive ( drive );
50 printf ( "Registered as BIOS drive %#02x\n", drive->drive );
51 printf ( "Booting from BIOS drive %#02x\n", drive->drive );
52 rc = int13_boot ( drive->drive );
53 printf ( "Boot failed\n" );
54
55 /* Leave drive registered, if instructed to do so */
56 if ( keep_san() )
57 return rc;
58
59 printf ( "Unregistering BIOS drive %#02x\n", drive->drive );
60 unregister_int13_drive ( drive );
61
62 err_init:
63 iscsi_detach ( scsi );
64 err_attach:
65 free ( drive );
66 err_alloc_drive:
67 free ( scsi );
68 err_alloc_scsi:
69 return rc;
70 }
71
72 struct sanboot_protocol iscsi_sanboot_protocol __sanboot_protocol = {
73 .prefix = "iscsi:",
74 .boot = iscsiboot,
75 };
76