/**
* Execute El Torito image
*
* @v image El Torito image
* @ret rc Return status code
*/
static int eltorito_exec ( struct image *image ) {
struct ramdisk ramdisk;
struct int13_drive int13_drive;
unsigned int load_segment = image->priv.ul;
unsigned int load_offset = ( load_segment ? 0 : 0x7c00 );
int rc;
memset ( &ramdisk, 0, sizeof ( ramdisk ) );
init_ramdisk ( &ramdisk, image->data, image->len, ISO9660_BLKSIZE );
memset ( &int13_drive, 0, sizeof ( int13_drive ) );
int13_drive.blockdev = &ramdisk.blockdev;
register_int13_drive ( &int13_drive );
if ( ( rc = call_bootsector ( load_segment, load_offset,
int13_drive.drive ) ) != 0 ) {
DBGC ( image, "ElTorito %p boot failed: %s\n",
image, strerror ( rc ) );
goto err;
}
rc = -ECANCELED; /* -EIMPOSSIBLE */
err:
unregister_int13_drive ( &int13_drive );
return rc;
}
static int aoeboot ( const char *root_path ) {
struct ata_device ata;
struct int13_drive drive;
int rc;
memset ( &ata, 0, sizeof ( ata ) );
memset ( &drive, 0, sizeof ( drive ) );
printf ( "AoE booting from %s\n", root_path );
/* FIXME: ugly, ugly hack */
struct net_device *netdev = last_opened_netdev();
if ( ( rc = aoe_attach ( &ata, netdev, root_path ) ) != 0 ) {
printf ( "Could not attach AoE device: %s\n",
strerror ( rc ) );
goto error_attach;
}
if ( ( rc = init_atadev ( &ata ) ) != 0 ) {
printf ( "Could not initialise AoE device: %s\n",
strerror ( rc ) );
goto error_init;
}
/* FIXME: ugly, ugly hack */
struct aoe_session *aoe =
container_of ( ata.backend, struct aoe_session, refcnt );
abft_fill_data ( aoe );
drive.blockdev = &ata.blockdev;
register_int13_drive ( &drive );
printf ( "Registered as BIOS drive %#02x\n", drive.drive );
printf ( "Booting from BIOS drive %#02x\n", drive.drive );
rc = int13_boot ( drive.drive );
printf ( "Boot failed\n" );
printf ( "Unregistering BIOS drive %#02x\n", drive.drive );
unregister_int13_drive ( &drive );
error_init:
aoe_detach ( &ata );
error_attach:
return rc;
}
static int iscsiboot ( const char *root_path ) {
struct scsi_device *scsi;
struct int13_drive *drive;
int keep_san;
int rc;
scsi = zalloc ( sizeof ( *scsi ) );
if ( ! scsi ) {
rc = -ENOMEM;
goto err_alloc_scsi;
}
drive = zalloc ( sizeof ( *drive ) );
if ( ! drive ) {
rc = -ENOMEM;
goto err_alloc_drive;
}
printf ( "iSCSI booting from %s\n", root_path );
if ( ( rc = iscsi_attach ( scsi, root_path ) ) != 0 ) {
printf ( "Could not attach iSCSI device: %s\n",
strerror ( rc ) );
goto err_attach;
}
if ( ( rc = init_scsidev ( scsi ) ) != 0 ) {
printf ( "Could not initialise iSCSI device: %s\n",
strerror ( rc ) );
goto err_init;
}
drive->blockdev = &scsi->blockdev;
/* FIXME: ugly, ugly hack */
struct net_device *netdev = last_opened_netdev();
struct iscsi_session *iscsi =
container_of ( scsi->backend, struct iscsi_session, refcnt );
ibft_fill_data ( netdev, iscsi );
register_int13_drive ( drive );
printf ( "Registered as BIOS drive %#02x\n", drive->drive );
printf ( "Booting from BIOS drive %#02x\n", drive->drive );
rc = int13_boot ( drive->drive );
printf ( "Boot failed\n" );
/* Leave drive registered, if instructed to do so */
keep_san = fetch_intz_setting ( NULL, &keep_san_setting );
if ( keep_san ) {
printf ( "Preserving connection to SAN disk\n" );
shutdown_exit_flags |= SHUTDOWN_KEEP_DEVICES;
return rc;
}
printf ( "Unregistering BIOS drive %#02x\n", drive->drive );
unregister_int13_drive ( drive );
err_init:
iscsi_detach ( scsi );
err_attach:
free ( drive );
err_alloc_drive:
free ( scsi );
err_alloc_scsi:
return rc;
}
