ats.c

开发源代码的CPU卡的COS源程序。

/* ============================================================================
   Project Name : jayaCard
   Module Name  : proto/bios/init/ats.c
   Version : $Id: ats.c,v 1.15 2004/01/11 09:56:31 dgil Exp $

	Description: ATS

    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 - today we have an entry point !
   ============================================================================
*/

#include "precomp.h"

/* =========================================================================
	__bios_ats()

	algo:
		if opcode ATS
 			execute it
		else
			if ATS in EEPROM
				send it
			else
				build the default one calling cos_historical_bytes()
			endif
		endif
   ========================================================================= */

void __bios_ats(void)
{
	LOCAL(jbyte,i);
    LOCAL(jbyte,bitratecap);

	// opcode for ATS ?
	if (BIOS_CALL_OPCODE(OPCODE_ATS)==JSEC_OK) return;

	// valid ATS in EEPROM ?
	HAL_EEPROM_READ(&u.bBlock[JAYA_BCRYPTO_INPUT0+0],ADDR_EEPROM_ATS,EEPROM_SIZEOF_ATS);
	if ((u.bBlock[JAYA_BCRYPTO_INPUT0+0]!=0) && (u.bBlock[JAYA_BCRYPTO_INPUT0+0]<=(EEPROM_SIZEOF_ATS-3))) {
		HAL_CRC_INIT();
		for (i=1;i<=u.bBlock[JAYA_BCRYPTO_INPUT0+0];i++) { HAL_CRC_COMPUTE(u.bBlock[JAYA_BCRYPTO_INPUT0+i]); }
		if ( (HAL_CRC_LO()==u.bBlock[JAYA_BCRYPTO_INPUT0+EEPROM_SIZEOF_ATS-2]) && (HAL_CRC_HI()==u.bBlock[JAYA_BCRYPTO_INPUT0+EEPROM_SIZEOF_ATS-1]) ) {
			goto send_hist;
		}
	}

    if ((cfg_config_flag1&CONFIG_FLAG1_CONFIG_BITRATECAP)==CONFIG_FLAG1_CONFIG_BITRATECAP) {
        bitratecap = HAL_EEPROM_READ_BYTE(ADDR_CONFIG_BITRATECAP);
    } else {
        bitratecap = 0x80 | (JAYACFG_BITRATECAP&0x07) | ((JAYACFG_BITRATECAP&0x07)<<4);
    }

	// send our ATS with the user historical bytes
	u.bBlock[JAYA_BCRYPTO_INPUT0+0] = cos_historical_bytes(&u.bBlock[JAYA_BCRYPTO_INPUT0+1]);
	HAL_TCL_INITSEND(u.bBlock[JAYA_BCRYPTO_INPUT0+0]+5);

	// send other mandatory part
	HAL_TCL_SEND(0x70+(cfg_fsci&0x0F));	/* T0 = TC(1) TB(1) TA(1) FSCI_TYPEA */
    HAL_TCL_SEND(bitratecap);           /* TA = bit rate capabilities */
	HAL_TCL_SEND(((cfg_fwi&0x0F) << 4)+JAYACFG_SFGI_TYPEA);		/* TB = FWI and SFGI */
	HAL_TCL_SEND(0x03);		/* TC = support NAD, support CID */

	// then send historical bytes
send_hist:
	for (i=1;i<=u.bBlock[JAYA_BCRYPTO_INPUT0+0];i++) { HAL_TCL_SEND(u.bBlock[JAYA_BCRYPTO_INPUT0+i]); }
	HAL_TCL_SENDGO(jfalse);
}

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