elilo/loader.c

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/*
* Copyright (C) 2001-2003 Hewlett-Packard Co.
* Contributed by Stephane Eranian <eranian@hpl.hp.com>
*
* This file is part of the ELILO, the EFI Linux boot loader.
*
* ELILO is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* ELILO is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with ELILO; see the file COPYING. If not, write to the Free
* Software Foundation, 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
* Please check out the elilo.txt for complete documentation on how
* to use this program.
*/
#include <efi.h>
#include <efilib.h>
#include "elilo.h"
#include "loader.h"
extern loader_ops_t plain_loader;
extern loader_ops_t gzip_loader;
static loader_ops_t *ldops_list;
loader_ops_t *
loader_probe(CHAR16 *kname)
{
loader_ops_t *ops;
UINTN n = 0;
for (ops= ldops_list; ops; ops = ops->next) {
n++;
VERB_PRT(3, Print(L"Probing loader: %s\n", ops->ld_name));
if (ops->ld_probe(kname) == 0) {
return ops;
}
}
if (!n) {
ERR_PRT((L"No loaders registered"));
}
return NULL;
}
INTN
loader_register(loader_ops_t *ldops)
{
if (ldops == NULL) return -1;
/* cheap sanity check */
if (ldops->next) {
ERR_PRT((L"loader %s is already registered", ldops->ld_name));
return -1;
}
ldops->next = ldops_list;
ldops_list = ldops;
VERB_PRT(3, Print(L"New loader registered: %s\n", ldops->ld_name));
return 0;
}