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- #include <stdint.h>
- #include <string.h>
- #include <stdlib.h>
- #include <stdio.h>
- #include <errno.h>
- #include <gpxe/iscsi.h>
- #include <gpxe/settings.h>
- #include <gpxe/dhcp.h>
- #include <gpxe/netdevice.h>
- #include <gpxe/ibft.h>
- #include <gpxe/init.h>
- #include <int13.h>
- #include <usr/autoboot.h>
- #include <usr/iscsiboot.h>
-
- struct setting keep_san_setting __setting = {
- .name = "keep-san",
- .description = "Preserve SAN connection",
- .tag = DHCP_EB_KEEP_SAN,
- .type = &setting_type_int8,
- };
-
- /**
- * Guess boot network device
- *
- * @ret netdev Boot network device
- */
- static struct net_device * guess_boot_netdev ( void ) {
- struct net_device *boot_netdev;
-
- /* Just use the first network device */
- for_each_netdev ( boot_netdev ) {
- return boot_netdev;
- }
-
- return NULL;
- }
-
- 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 = guess_boot_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;
- }
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