/**
* Execute PXE image
*
* @v image PXE image
* @ret rc Return status code
*/
static int pxe_exec ( struct image *image ) {
int rc;
/* Ensure that PXE stack is ready to use */
pxe_init_structures();
pxe_hook_int1a();
/* Arbitrarily pick the most recently opened network device */
pxe_set_netdev ( last_opened_netdev() );
/* Many things will break if pxe_netdev is NULL */
if ( ! pxe_netdev ) {
DBGC ( image, "IMAGE %p could not locate PXE net device\n",
image );
return -ENODEV;
}
/* Start PXE NBP */
rc = pxe_start_nbp();
/* Deactivate PXE */
pxe_set_netdev ( NULL );
pxe_unhook_int1a();
return rc;
}
/**
* Execute PXE image
*
* @v image PXE image
* @ret rc Return status code
*/
static int pxe_exec ( struct image *image ) {
userptr_t buffer = real_to_user ( 0, 0x7c00 );
struct net_device *netdev;
int rc;
/* Verify and prepare segment */
if ( ( rc = prep_segment ( buffer, image->len, image->len ) ) != 0 ) {
DBGC ( image, "IMAGE %p could not prepare segment: %s\n",
image, strerror ( rc ) );
return rc;
}
/* Copy image to segment */
memcpy_user ( buffer, 0, image->data, 0, image->len );
/* Arbitrarily pick the most recently opened network device */
if ( ( netdev = last_opened_netdev() ) == NULL ) {
DBGC ( image, "IMAGE %p could not locate PXE net device\n",
image );
return -ENODEV;
}
netdev_get ( netdev );
/* Activate PXE */
pxe_activate ( netdev );
/* Construct fake DHCP packets */
pxe_fake_cached_info();
/* Set PXE command line */
pxe_cmdline = image->cmdline;
/* Reset console since PXE NBP will probably use it */
console_reset();
/* Disable IRQ, if applicable */
if ( netdev_irq_supported ( netdev ) && netdev->dev->desc.irq )
disable_irq ( netdev->dev->desc.irq );
/* Start PXE NBP */
rc = pxe_start_nbp();
/* Clear PXE command line */
pxe_cmdline = NULL;
/* Deactivate PXE */
pxe_deactivate();
/* Try to reopen network device. Ignore errors, since the NBP
* may have called PXENV_STOP_UNDI.
*/
netdev_open ( netdev );
netdev_put ( netdev );
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;
}