1 files changed, 46 insertions, 0 deletions
diff --git a/src/usr/iscsiboot.c b/src/usr/iscsiboot.c
new file mode 100644
index 000000000..f3910f149
--- /dev/null
+++ b/src/usr/iscsiboot.c
@@ -0,0 +1,46 @@
+#include <stdint.h>
+#include <string.h>
+#include <stdio.h>
+#include <gpxe/iscsi.h>
+#include <gpxe/dhcp.h>
+#include <int13.h>
+#include <usr/iscsiboot.h>
+
+int iscsiboot ( const char *root_path ) {
+	struct scsi_device scsi;
+	struct int13_drive drive;
+	int rc;
+
+	memset ( &scsi, 0, sizeof ( scsi ) );
+	memset ( &drive, 0, sizeof ( 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 error_attach;
+	}
+	if ( ( rc = init_scsidev ( &scsi ) ) != 0 ) {
+		printf ( "Could not initialise iSCSI device: %s\n",
+			 strerror ( rc ) );
+		goto error_init;
+	}
+
+	drive.drive = find_global_dhcp_num_option ( DHCP_EB_BIOS_DRIVE );
+	drive.blockdev = &scsi.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:
+	iscsi_detach ( &scsi );
+ error_attach:
+	return rc;
+}