pxe_loader.c

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00001 /*
00002  * Copyright (C) 2007 Michael Brown <mbrown@fensystems.co.uk>.
00003  *
00004  * This program is free software; you can redistribute it and/or
00005  * modify it under the terms of the GNU General Public License as
00006  * published by the Free Software Foundation; either version 2 of the
00007  * License, or any later version.
00008  *
00009  * This program is distributed in the hope that it will be useful, but
00010  * WITHOUT ANY WARRANTY; without even the implied warranty of
00011  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012  * General Public License for more details.
00013  *
00014  * You should have received a copy of the GNU General Public License
00015  * along with this program; if not, write to the Free Software
00016  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
00017  */
00018 
00019 FILE_LICENCE ( GPL2_OR_LATER );
00020 
00021 #include <gpxe/init.h>
00022 #include "pxe.h"
00023 #include "pxe_call.h"
00024 
00025 /** @file
00026  *
00027  * PXE UNDI loader
00028  *
00029  */
00030 
00031 /* PXENV_UNDI_LOADER
00032  *
00033  */
00034 PXENV_EXIT_t undi_loader ( struct s_UNDI_LOADER *undi_loader ) {
00035 
00036         /* Perform one-time initialisation (e.g. heap) */
00037         initialise();
00038 
00039         DBG ( "[PXENV_UNDI_LOADER to CS %04x DS %04x]",
00040               undi_loader->UNDI_CS, undi_loader->UNDI_DS );
00041 
00042         /* Fill in UNDI loader structure */
00043         undi_loader->PXEptr.segment = rm_cs;
00044         undi_loader->PXEptr.offset = __from_text16 ( &ppxe );
00045         undi_loader->PXENVptr.segment = rm_cs;
00046         undi_loader->PXENVptr.offset = __from_text16 ( &pxenv );
00047 
00048         undi_loader->Status = PXENV_STATUS_SUCCESS;
00049         return PXENV_EXIT_SUCCESS;
00050 }