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/*
* <file.c>
*
* Open Hack'Ware BIOS executable file loader
*
* Copyright (c) 2004-2005 Jocelyn Mayer
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License V2
* as published by the Free Software Foundation
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdlib.h>
#include <stdio.h>
#include "bios.h"
#include "exec.h"
/*****************************************************************************/
uint32_t file_seek (inode_t *file, uint32_t pos)
{
uint32_t blocsize, bloc, offset;
if (file == NULL)
return -1;
blocsize = part_blocsize(fs_inode_get_part(file));
bloc = pos / blocsize;
offset = pos % blocsize;
return fs_seek(file, bloc, offset);
}
/*****************************************************************************/
/* Executable file loaders */
enum {
FILE_TYPE_ELF = 0,
FILE_TYPE_XCOFF,
FILE_TYPE_MACHO,
FILE_TYPE_PEF,
FILE_TYPE_CHRP,
FILE_TYPE_PREP,
FILE_TYPE_FLAT,
};
uint32_t fs_inode_get_size (inode_t *inode);
unsigned int part_get_entry (part_t *part);
/*****************************************************************************/
/* Generic boot file loader */
int _bootfile_load (inode_t *file, void **dest, void **entry, void **end,
uint32_t loffset, int type)
{
int (*do_load)(inode_t *file, void **dest, void **entry, void **end,
uint32_t loffset);
uint32_t size;
int ret;
int i;
if (type == -1)
i = 0;
else
i = type;
for (;; i++) {
switch (i) {
case FILE_TYPE_ELF:
do_load = &exec_load_elf;
break;
case FILE_TYPE_XCOFF:
do_load = &exec_load_xcoff;
break;
case FILE_TYPE_MACHO:
do_load = &exec_load_macho;
break;
case FILE_TYPE_PEF:
do_load = &exec_load_pef;
break;
case FILE_TYPE_CHRP:
do_load = &exec_load_chrp;
break;
case FILE_TYPE_PREP:
do_load = &exec_load_prep;
break;
default:
if (*dest == NULL)
*dest = (void *)DEFAULT_LOAD_DEST;
if (*entry == NULL) {
if (part_get_entry(fs_inode_get_part(file)) != 0 || 1) {
*entry = (char *)*dest +
part_get_entry(fs_inode_get_part(file));
dprintf("dest %p entry %08x => %p\n",
*dest, part_get_entry(fs_inode_get_part(file)),
*entry);
} else {
*entry = *dest + 0xC;
}
}
size = fs_inode_get_size(file);
*end = (char *)*dest + size - loffset;
printf("Load raw file into memory at %p %d (%08x) %d (%08x)\n",
*dest, size, size, loffset, loffset);
file_seek(file, loffset);
set_loadinfo(*dest, size);
if ((uint32_t)fs_read(file, *dest, size) != size) {
ERROR("Error loading file...\n");
ret = -1;
} else {
ret = 0;
}
goto out;
}
DPRINTF("Check file type %d at offset %d %p\n", i, loffset, do_load);
ret = (*do_load)(file, dest, entry, end, loffset);
if (ret >= -1 || type == i) {
if (type == i)
ret = -2;
break;
}
}
out:
return ret;
}
int bootfile_load (void **dest, void **entry, void **end,
part_t *part, int type, const unsigned char *fname,
uint32_t loffset)
{
inode_t *file;
int ret;
DPRINTF("Load file '%s' %p %p type: %d offset: %0x => %d %p\n",
fname, part, part_fs(part), type, loffset, part_blocsize(part), *dest);
if (fname == NULL)
file = fs_get_bootfile(part_fs(part));
else
file = fs_open(part_fs(part), fname);
if (file == NULL)
return -1;
ret = _bootfile_load(file, dest, entry, end, loffset, type);
fs_close(file);
return ret;
}
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