Michael Brown
47a86bca2d
really ugly hack at present, but that doesn't hugely matter since I'm aiming to change the interface to iSCSI devices anyway within the next week.
71 lines
1.7 KiB
C
71 lines
1.7 KiB
C
#include <stdint.h>
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#include <string.h>
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#include <stdio.h>
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#include <gpxe/iscsi.h>
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#include <gpxe/dhcp.h>
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#include <gpxe/netdevice.h>
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#include <gpxe/ibft.h>
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#include <int13.h>
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#include <usr/iscsiboot.h>
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/**
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* Guess boot network device
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*
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* @ret netdev Boot network device
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*/
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static struct net_device * guess_boot_netdev ( void ) {
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struct net_device *boot_netdev;
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/* Just use the first network device */
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for_each_netdev ( boot_netdev ) {
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return boot_netdev;
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}
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return NULL;
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}
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int iscsiboot ( const char *root_path ) {
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struct scsi_device scsi;
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struct int13_drive drive;
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int rc;
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memset ( &scsi, 0, sizeof ( scsi ) );
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memset ( &drive, 0, sizeof ( drive ) );
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printf ( "iSCSI booting from %s\n", root_path );
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if ( ( rc = iscsi_attach ( &scsi, root_path ) ) != 0 ) {
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printf ( "Could not attach iSCSI device: %s\n",
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strerror ( rc ) );
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goto error_attach;
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}
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if ( ( rc = init_scsidev ( &scsi ) ) != 0 ) {
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printf ( "Could not initialise iSCSI device: %s\n",
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strerror ( rc ) );
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goto error_init;
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}
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drive.drive = find_global_dhcp_num_option ( DHCP_EB_BIOS_DRIVE );
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drive.blockdev = &scsi.blockdev;
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/* FIXME: ugly, ugly hack */
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struct net_device *netdev = guess_boot_netdev();
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struct iscsi_session *iscsi =
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container_of ( scsi.backend, struct iscsi_session, refcnt );
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ibft_fill_data ( netdev, iscsi );
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register_int13_drive ( &drive );
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printf ( "Registered as BIOS drive %#02x\n", drive.drive );
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printf ( "Booting from BIOS drive %#02x\n", drive.drive );
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rc = int13_boot ( drive.drive );
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printf ( "Boot failed\n" );
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printf ( "Unregistering BIOS drive %#02x\n", drive.drive );
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unregister_int13_drive ( &drive );
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error_init:
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iscsi_detach ( &scsi );
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error_attach:
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return rc;
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}
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