115 lines
2.9 KiB
C
115 lines
2.9 KiB
C
/*
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* Copyright (C) 2001-2003 Hewlett-Packard Co.
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* Contributed by Stephane Eranian <eranian@hpl.hp.com>
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*
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* This file is part of the ELILO, the EFI Linux boot loader.
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*
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* ELILO is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* ELILO is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with ELILO; see the file COPYING. If not, write to the Free
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* Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*
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* Please check out the elilo.txt for complete documentation on how
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* to use this program.
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*/
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#include <efi.h>
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#include <efilib.h>
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#include "elilo.h"
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#ifdef CONFIG_CHOOSER_SIMPLE
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#include "choosers/simple.h"
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#endif
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#ifdef CONFIG_CHOOSER_TEXTMENU
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#include "choosers/textmenu.h"
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#endif
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static chooser_t *choosers_tab[]={
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#ifdef CONFIG_CHOOSER_SIMPLE
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&simple_chooser,
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#endif
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#ifdef CONFIG_CHOOSER_TEXTMENU
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&textmenu_chooser,
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#endif
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NULL
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};
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/*
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* The intent of this module is to provide a mechanism by which alternate
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* choosers can be installed. Developers can write new choosers and
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* add them to the list. They will be probe and the best match
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* will be started first. It should be possible to switch to another
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* chooser using a key combination. There is a default simple text-based
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* chooser that must always be present.
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*
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* Currently you can specify a chooser via "-c name" when you invoke elilo,
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* or via "chooser=name" in the config file. If the specified chooser
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* probes ok it will be selected, otherwise the first one that probes ok
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* will be used.
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*
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* XXX: at this time, not all chooser functionalities are implemented.
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*
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*/
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chooser_func_t *kernel_chooser;
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INTN
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init_chooser(EFI_HANDLE dev)
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{
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chooser_t **p;
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CHAR16 *chooser_name = L"none";
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kernel_chooser = NULL;
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for (p=choosers_tab; *p; p++) {
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VERB_PRT(4, Print(L"trying chooser %s\n", (*p)->chooser_name));
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if ((*p)->chooser_probe(dev) == 0) {
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/*
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* if that's the one we asked for, then go for it
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*/
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if (!StrCmp(elilo_opt.chooser, (*p)->chooser_name)) {
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kernel_chooser = (*p)->chooser_func;
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chooser_name = (*p)->chooser_name;
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break;
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}
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if (kernel_chooser == NULL) {
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kernel_chooser = (*p)->chooser_func;
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chooser_name = (*p)->chooser_name;
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}
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}
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}
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if (kernel_chooser) {
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VERB_PRT(2, Print(L"selected chooser %s\n", chooser_name));
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return 0;
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}
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ERR_PRT((L"No chooser selected. Impossible to proceed"));
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return -1;
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}
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INTN
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exist_chooser(CHAR16 *name)
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{
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chooser_t **p;
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for (p=choosers_tab; *p; p++) {
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if (!StrCmp(name, (*p)->chooser_name)) return 0;
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}
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return -1;
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}
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