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/*
* $Id: mmc.c,v 1.2 2006/01/21 18:33:20 germeier Exp $
*
* libmpio - a library for accessing Digit@lways MPIO players
* Copyright (C) 2004 Robert Kellington, Markus Germeier
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc.,g 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <stdio.h>
#include <stdlib.h>
#include "mmc.h"
#include "debug.h"
/*
This routine attempts to detect when mmc module is present and set some variables according to
that size. If adding a new memory module do the following changes:
1. Add the appropriate switch below (size and geo need to be set).
2. Add the new module size and array data into the routines mmc_mpio_mbr_gen and mmc_mpio_pbr_gen for the memory
formating.
That should be all
*/
BYTE mpio_mmc_detect_memory(mpio_t *m, mpio_mem_t mem)
{
mpio_smartmedia_t *sm=0;
int size;
/* just in case we encounter a player with an internel mmc memory */
if (mem == MPIO_INTERNAL_MEM) sm = &m->internal;
if (mem == MPIO_EXTERNAL_MEM) sm = &m->external;
if (!sm)
{
debug("error in memory selection, aborting\n");
exit (-1);
}
/*looking for likely markers*/
/*
if(((BYTE)(m->version[0x28]) == 0x32) &&
((BYTE)(m->version[0x3a]) == 0x01) &&
((BYTE)(m->version[0x3b]) == 0x01) &&
((BYTE)(m->version[0x30]) == 0xff) &&
((BYTE)(m->version[0x31]) == 0xcf))
*/
if(((BYTE)(m->version[0x39]) == 0x01) &&
((BYTE)(m->version[0x3b]) == 0x01) &&
((BYTE)(m->version[0x20]) == 0xff) &&
((BYTE)(m->version[0x21]) == 0xff) &&
((BYTE)(m->version[0x22]) == 0xff) &&
((BYTE)(m->version[0x23]) == 0xff) &&
((BYTE)(m->version[0x24]) == 0xff) &&
((BYTE)(m->version[0x25]) == 0xff))
{
switch((BYTE)m->version[0x26])
{
case 0x0e: /* 16 Mb */
/*NOTE: This size needs formating to be added and testing*/
sm->size = 16;
sm->geo = MPIO_DISK_GEO_016;
break;
case 0x1e: /* 32 Mb */
sm->size = 32;
sm->geo = MPIO_DISK_GEO_032;
break;
case 0x3b: /* 64 Mb */
sm->size = 64;
sm->geo = MPIO_DISK_GEO_064;
break;
case 0x78: /* 128 Mb */
sm->size = 128;
sm->geo = MPIO_DISK_GEO_128;
break;
case 0xf1: /* 256 Mb */
sm->size = 256;
sm->geo = MPIO_DISK_GEO_256;
break;
default:
debug("Found MMC memory markers but didn't recognize size\n");
sm->mmc = 0;
sm->size = 0;
return 0;
}
sm->mmc = 1;
sm->chips = 1;
sm->version = 0;
sm->id = 0x78; /* Assigning my random id */
debug("Found MMC memory and all is OK so far\n");
return 1;
}
debug("Not recognized MMC memory\n");
return 0;
}
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