initbios.c

开发源代码的CPU卡的COS源程序。

/* ============================================================================
   Project Name : jayaCard
   Module Name  : proto/bios/init/initbios.c
   Version : $Id: initbios.c,v 1.21 2004/01/11 09:56:31 dgil Exp $

	Description: BIOS initialization

    The Original Code is jayaCard code.

    The Initial Developer of the Original Code is Gilles Dumortier.

	Portions created by the Initial Developer are Copyright (C) 2002-2004 the
    Initial Developer. All Rights Reserved.

    Contributor(s):

    This program 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 of the License, or
    (at your option) any later version.

    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; see http://www.gnu.org/licenses/gpl.html

   History Rev	Description
   012603 dgil	wrote it from scratch
   ============================================================================
*/

#include "precomp.h"

/* =========================================================================
	__bios_reset_context()

	Reset the context:
		- during BIOS initialisation
		- after an explicit request from the COS

	What to do ?
		- default cipher algo
		- deselect currentkey
		- set lasterr
		- reset seqval process if lasterr
		- ... __x XXX
   ========================================================================= */

void __bios_reset_context(jbyte err)
{
	/* reset cipher algo, current key, ... */
	BIOS_SETCIPHERALGO(JAYACFG_CIPHER_ALGO_DEFAULT);
    BIOS_SETPADDING(JAYACFG_CIPHER_PAD_DEFAULT);
	BIOS_SETMACALGO(JAYACFG_CIPHER_MAC_DEFAULT);
	currentkey_type = KEY_TYPE_NOKEY;

    /* set error and reset SeqVal process only if it is a real error ! */
    if (err != SUCCESS) {
		BIOS_SETERR(err);
        if (err != PENDING) {
            LOG1("BIOS","__bios_reset_context() err = %d / reset authentification process",err);
            BIOS_SET_SEQVAL(SEQVAL_NOPROCESS);
        }
    }

	/* cleanup the crypto context itself ... just in case its not already done */
	BIOS_CRYPTO_CLEANUP();
}

/* =========================================================================
	__bios_init()

	This function must initialize the BIOS :
		HAL initialisation
		appliData generation
		file system initialisation
		tcl initialisation
		crypto initialisation
   ========================================================================= */

void __bios_init(void)
{
	LOG("BIOS","__bios_init() ...");

	/* Read chip configuration */
	cfg_config_flag1 = HAL_EEPROM_READ_BYTE(ADDR_CONFIG_FLAG1);
	cfg_config_flag2 = HAL_EEPROM_READ_BYTE(ADDR_CONFIG_FLAG2);
	cfg_config_flag3 = HAL_EEPROM_READ_BYTE(ADDR_CONFIG_FLAG3);

	if ((cfg_config_flag1&CONFIG_FLAG1_CONFIG_FWI)==CONFIG_FLAG1_CONFIG_FWI) {
		cfg_fwi = HAL_EEPROM_READ_BYTE(ADDR_CONFIG_FWI);
	} else {
		cfg_fwi = JAYACFG_FWI;
	}
	if ((cfg_config_flag1&CONFIG_FLAG1_CONFIG_FSCI)==CONFIG_FLAG1_CONFIG_FSCI) {
		cfg_fsci = HAL_EEPROM_READ_BYTE(ADDR_CONFIG_FSCI);
	} else {
		cfg_fsci = JAYACFG_FSCI;
	}
    #ifdef JAYA_TCL_WTX
    if ((cfg_config_flag1&CONFIG_FLAG1_CONFIG_CHUNKEEP)==CONFIG_FLAG1_CONFIG_CHUNKEEP) {
        cfg_chunkeep = HAL_EEPROM_READ_BYTE(ADDR_CONFIG_CHUNKEEP);
    } else {
        cfg_chunkeep = JAYACFG_CHUNK_EEPROM_WRITE_BEFORE_WTX_REQUIRED;
    }
    #endif

	/* very first init because need CRC to communicate */
	#ifdef TCL_TYPEAB
	#ifdef XPCORE_SIMU
	/* the simulator sets the type on the power on */
	#else
	/* the component need to read the configuration from a cell in EEPROM */
	tcl_type = ((cfg_config_flag1&CONFIG_FLAG1_TYPEA)==CONFIG_FLAG1_TYPEA)?TCL_TYPEA:TCL_TYPEB;
	#endif
	#endif

	/* HAL and low-level BIOS initialisation */
	HAL_INIT();
	BIOS_APPLIDATA();
	BIOS_TCL_INIT();

	/* default status for access */
    gSeqVal = SEQVAL_NOPROCESS;     /* no process pending */
    gSeqKeyPin = 0x00;              /* default key | default pin */

	/* default security context */
	BIOS_RESET_CONTEXT(SUCCESS);
}

/* =========================================================================
	That's all folks !
   ========================================================================= */