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simtrace2/firmware/libcommon/source/iso7816_4.c

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/* ----------------------------------------------------------------------------
* ATMEL Microcontroller Software Support
* ----------------------------------------------------------------------------
* Copyright (c) 2009, Atmel Corporation
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the disclaimer below.
*
* Atmel's name may not be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* ----------------------------------------------------------------------------
*/
/**
* \file
*
* \section Purpose
*
* ISO 7816 driver
*
* \section Usage
*
* Explanation on the usage of the code made available through the header file.
*/
/*------------------------------------------------------------------------------
* Headers
*------------------------------------------------------------------------------*/
#include "board.h"
/*------------------------------------------------------------------------------
* Definitions
*------------------------------------------------------------------------------*/
/** Case for APDU commands*/
#define CASE1 1
#define CASE2 2
#define CASE3 3
/** Flip flop for send and receive char */
#define USART_SEND 0
#define USART_RCV 1
/*-----------------------------------------------------------------------------
* Internal variables
*-----------------------------------------------------------------------------*/
/** Pin reset master card */
static Pin *st_pinIso7816RstMC;
struct Usart_info usart_sim = {.base = USART_SIM, .id = ID_USART_SIM, .state = USART_RCV};
/*----------------------------------------------------------------------------
* Internal functions
*----------------------------------------------------------------------------*/
/**
* Get a character from ISO7816
* \param pCharToReceive Pointer for store the received char
* \return 0: if timeout else status of US_CSR
*/
uint32_t ISO7816_GetChar( uint8_t *pCharToReceive, Usart_info *usart)
{
uint32_t status;
uint32_t timeout=0;
Usart *us_base = usart->base;
uint32_t us_id = usart->id;
if( usart->state == USART_SEND ) {
while((us_base->US_CSR & US_CSR_TXEMPTY) == 0) {}
us_base->US_CR = US_CR_RSTSTA | US_CR_RSTIT | US_CR_RSTNACK;
usart->state = USART_RCV;
}
/* Wait USART ready for reception */
while( ((us_base->US_CSR & US_CSR_RXRDY) == 0) ) {
WDT_Restart(WDT);
if(timeout++ > 12000 * (BOARD_MCK/1000000)) {
TRACE_WARNING("TimeOut\r\n");
return( 0 );
}
}
/* At least one complete character has been received and US_RHR has not yet been read. */
/* Get a char */
*pCharToReceive = ((us_base->US_RHR) & 0xFF);
status = (us_base->US_CSR&(US_CSR_OVRE|US_CSR_FRAME|
US_CSR_PARE|US_CSR_TIMEOUT|US_CSR_NACK|
(1<<10)));
if (status != 0 ) {
TRACE_DEBUG("R:0x%" PRIX32 "\r\n", status);
TRACE_DEBUG("R:0x%" PRIX32 "\r\n", us_base->US_CSR);
TRACE_DEBUG("Nb:0x%" PRIX32 "\r\n", us_base->US_NER );
us_base->US_CR = US_CR_RSTSTA;
}
/* Return status */
return( status );
}
/**
* Send a char to ISO7816
* \param CharToSend char to be send
* \return status of US_CSR
*/
uint32_t ISO7816_SendChar( uint8_t CharToSend, Usart_info *usart )
{
uint32_t status;
Usart *us_base = usart->base;
uint32_t us_id = usart->id;
if( usart->state == USART_RCV ) {
us_base->US_CR = US_CR_RSTSTA | US_CR_RSTIT | US_CR_RSTNACK;
usart->state = USART_SEND;
}
/* Wait USART ready for transmit */
int i = 0;
while((us_base->US_CSR & (US_CSR_TXRDY)) == 0) {
i++;
if (!(i%1000000)) {
printf("s: %lx ", us_base->US_CSR);
printf("s: %lx\r\n", us_base->US_RHR & 0xFF);
us_base->US_CR = US_CR_RSTTX;
us_base->US_CR = US_CR_RSTRX;
}
}
/* There is no character in the US_THR */
/* Transmit a char */
us_base->US_THR = CharToSend;
TRACE_ERROR("Sx%02X\r\n", CharToSend);
status = (us_base->US_CSR&(US_CSR_OVRE|US_CSR_FRAME|
US_CSR_PARE|US_CSR_TIMEOUT|US_CSR_NACK|
(1<<10)));
if (status != 0 ) {
TRACE_INFO("******* status: 0x%" PRIX32 " (Overrun: %" PRIX32
", NACK: %" PRIX32 ", Timeout: %" PRIX32 ", underrun: %" PRIX32 ")\r\n",
status, ((status & US_CSR_OVRE)>> 5), ((status & US_CSR_NACK) >> 13),
((status & US_CSR_TIMEOUT) >> 8), ((status & (1 << 10)) >> 10));
TRACE_INFO("E (USART CSR reg):0x%" PRIX32 "\r\n", us_base->US_CSR);
TRACE_INFO("Nb (Number of errors):0x%" PRIX32 "\r\n", us_base->US_NER );
us_base->US_CR = US_CR_RSTSTA;
}
/* Return status */
return( status );
}
/**
* Iso 7816 ICC power on
*/
static void ISO7816_IccPowerOn( void )
{
/* Set RESET Master Card */
if (st_pinIso7816RstMC) {
PIO_Set(st_pinIso7816RstMC);
}
}
/*----------------------------------------------------------------------------
* Exported functions
*----------------------------------------------------------------------------*/
/**
* Iso 7816 ICC power off
*/
void ISO7816_IccPowerOff( void )
{
/* Clear RESET Master Card */
if (st_pinIso7816RstMC) {
PIO_Clear(st_pinIso7816RstMC);
}
}
/**
* Transfert Block TPDU T=0
* \param pAPDU APDU buffer
* \param pMessage Message buffer
* \param wLength Block length
* \param indexMsg Message index
* \return 0 on success, content of US_CSR otherwise
*/
uint32_t ISO7816_XfrBlockTPDU_T0(const uint8_t *pAPDU,
uint8_t *pMessage,
uint16_t wLength,
uint16_t *retlen )
{
uint16_t NeNc;
uint16_t indexApdu = 4;
uint16_t indexMsg = 0;
uint8_t SW1 = 0;
uint8_t procByte;
uint8_t cmdCase;
uint32_t status = 0;
TRACE_INFO("pAPDU[0]=0x%X\r\n",pAPDU[0]);
TRACE_INFO("pAPDU[1]=0x%X\r\n",pAPDU[1]);
TRACE_INFO("pAPDU[2]=0x%X\r\n",pAPDU[2]);
TRACE_INFO("pAPDU[3]=0x%X\r\n",pAPDU[3]);
TRACE_INFO("pAPDU[4]=0x%X\r\n",pAPDU[4]);
TRACE_INFO("pAPDU[5]=0x%X\r\n",pAPDU[5]);
TRACE_INFO("wlength=%d\r\n",wLength);
ISO7816_SendChar( pAPDU[0], &usart_sim ); /* CLA */
ISO7816_SendChar( pAPDU[1], &usart_sim ); /* INS */
ISO7816_SendChar( pAPDU[2], &usart_sim ); /* P1 */
ISO7816_SendChar( pAPDU[3], &usart_sim ); /* P2 */
ISO7816_SendChar( pAPDU[4], &usart_sim ); /* P3 */
/* Handle the four structures of command APDU */
indexApdu = 5;
if( wLength == 4 ) {
cmdCase = CASE1;
NeNc = 0;
}
else if( wLength == 5) {
cmdCase = CASE2;
NeNc = pAPDU[4]; /* C5 */
if (NeNc == 0) {
NeNc = 256;
}
}
else if( wLength == 6) {
NeNc = pAPDU[4]; /* C5 */
cmdCase = CASE3;
}
else if( wLength == 7) {
NeNc = pAPDU[4]; /* C5 */
if( NeNc == 0 ) {
cmdCase = CASE2;
NeNc = (pAPDU[5]<<8)+pAPDU[6];
}
else {
cmdCase = CASE3;
}
}
else {
NeNc = pAPDU[4]; /* C5 */
if( NeNc == 0 ) {
cmdCase = CASE3;
NeNc = (pAPDU[5]<<8)+pAPDU[6];
}
else {
cmdCase = CASE3;
}
}
TRACE_DEBUG("CASE=0x%X NeNc=0x%X\r\n", cmdCase, NeNc);
/* Handle Procedure Bytes */
do {
status = ISO7816_GetChar(&procByte, &usart_sim);
if (status != 0) {
return status;
}
TRACE_INFO("procByte: 0x%X\r\n", procByte);
/* Handle NULL */
if ( procByte == ISO_NULL_VAL ) {
TRACE_INFO("INS\r\n");
continue;
}
/* Handle SW1 */
else if ( ((procByte & 0xF0) ==0x60) || ((procByte & 0xF0) ==0x90) ) {
TRACE_INFO("SW1\r\n");
SW1 = 1;
}
/* Handle INS */
else if ( pAPDU[1] == procByte) {
TRACE_INFO("HdlINS\r\n");
if (cmdCase == CASE2) {
/* receive data from card */
do {
status = ISO7816_GetChar(&pMessage[indexMsg++], &usart_sim);
} while(( 0 != --NeNc) && (status == 0) );
if (status != 0) {
return status;
}
}
else {
/* Send data */
do {
TRACE_INFO("Send %X", pAPDU[indexApdu]);
ISO7816_SendChar(pAPDU[indexApdu++], &usart_sim);
} while( 0 != --NeNc );
}
}
/* Handle INS ^ 0xff */
else
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wsign-compare"
if ( pAPDU[1] == (procByte ^ 0xff)) {
#pragma GCC diagnostic pop
TRACE_INFO("HdlINS+\r\n");
if (cmdCase == CASE2) {
/* receive data from card */
status = ISO7816_GetChar(&pMessage[indexMsg++], &usart_sim);
if (status != 0) {
return status;
}
TRACE_INFO("Rcv: 0x%X\r\n", pMessage[indexMsg-1]);
}
else {
status = ISO7816_SendChar(pAPDU[indexApdu++], &usart_sim);
if (status != 0) {
return status;
}
}
NeNc--;
}
else {
/* ?? */
TRACE_INFO("procByte=0x%X\r\n", procByte);
break;
}
} while (NeNc != 0);
/* Status Bytes */
if (SW1 == 0) {
status = ISO7816_GetChar(&pMessage[indexMsg++], &usart_sim); /* SW1 */
if (status != 0) {
return status;
}
}
else {
pMessage[indexMsg++] = procByte;
}
status = ISO7816_GetChar(&pMessage[indexMsg++], &usart_sim); /* SW2 */
if (status != 0) {
return status;
}
TRACE_WARNING("SW1=0x%X, SW2=0x%X\r\n", pMessage[indexMsg-2], pMessage[indexMsg-1]);
*retlen = indexMsg;
return status;
}
/**
* Escape ISO7816
*/
void ISO7816_Escape( void )
{
TRACE_DEBUG("For user, if needed\r\n");
}
/**
* Restart clock ISO7816
*/
void ISO7816_RestartClock( void )
{
TRACE_DEBUG("ISO7816_RestartClock\r\n");
USART_SIM->US_BRGR = 13;
}
/**
* Stop clock ISO7816
*/
void ISO7816_StopClock( void )
{
TRACE_DEBUG("ISO7816_StopClock\r\n");
USART_SIM->US_BRGR = 0;
}
/**
* T0 APDU
*/
void ISO7816_toAPDU( void )
{
TRACE_DEBUG("ISO7816_toAPDU\r\n");
TRACE_DEBUG("Not supported at this time\r\n");
}
/**
* Answer To Reset (ATR)
* \param pAtr ATR buffer
* \param pLength Pointer for store the ATR length
* \return 0: if timeout else status of US_CSR
*/
uint32_t ISO7816_Datablock_ATR( uint8_t* pAtr, uint8_t* pLength )
{
uint32_t i;
uint32_t j;
uint32_t y;
uint32_t status = 0;
*pLength = 0;
/* Read ATR TS */
// FIXME: There should always be a check for the GetChar return value..0 means timeout
status = ISO7816_GetChar(&pAtr[0], &usart_sim);
if (status != 0) {
return status;
}
/* Read ATR T0 */
status = ISO7816_GetChar(&pAtr[1], &usart_sim);
if (status != 0) {
return status;
}
y = pAtr[1] & 0xF0;
i = 2;
/* Read ATR Ti */
while (y && (status == 0)) {
if (y & 0x10) { /* TA[i] */
status = ISO7816_GetChar(&pAtr[i++], &usart_sim);
}
if (y & 0x20) { /* TB[i] */
status = ISO7816_GetChar(&pAtr[i++], &usart_sim);
}
if (y & 0x40) { /* TC[i] */
status = ISO7816_GetChar(&pAtr[i++], &usart_sim);
}
if (y & 0x80) { /* TD[i] */
status = ISO7816_GetChar(&pAtr[i], &usart_sim);
y = pAtr[i++] & 0xF0;
}
else {
y = 0;
}
}
if (status != 0) {
return status;
}
/* Historical Bytes */
y = pAtr[1] & 0x0F;
for( j=0; (j < y) && (status == 0); j++ ) {
status = ISO7816_GetChar(&pAtr[i++], &usart_sim);
}
if (status != 0) {
return status;
}
*pLength = i;
return status;
}
/**
* Set data rate and clock frequency
* \param dwClockFrequency ICC clock frequency in KHz.
* \param dwDataRate ICC data rate in bpd
*/
void ISO7816_SetDataRateandClockFrequency( uint32_t dwClockFrequency, uint32_t dwDataRate )
{
uint8_t ClockFrequency;
/* Define the baud rate divisor register */
/* CD = MCK / SCK */
/* SCK = FIDI x BAUD = 372 x 9600 */
/* BOARD_MCK */
/* CD = MCK/(FIDI x BAUD) = 48000000 / (372x9600) = 13 */
USART_SIM->US_BRGR = BOARD_MCK / (dwClockFrequency*1000);
ClockFrequency = BOARD_MCK / USART_SIM->US_BRGR;
USART_SIM->US_FIDI = (ClockFrequency)/dwDataRate;
}
/**
* Pin status for ISO7816 RESET
* \return 1 if the Pin RstMC is high; otherwise 0.
*/
uint8_t ISO7816_StatusReset( void )
{
if (st_pinIso7816RstMC) {
return PIO_Get(st_pinIso7816RstMC);
}
return 0;
}
/**
* cold reset
*/
void ISO7816_cold_reset( void )
{
volatile uint32_t i;
/* tb: wait ??? cycles*/
for( i=0; i<(400*(BOARD_MCK/1000000)); i++ ) {
}
USART_SIM->US_RHR;
USART_SIM->US_CR = US_CR_RSTSTA | US_CR_RSTIT | US_CR_RSTNACK;
ISO7816_IccPowerOn();
}
/**
* Warm reset
*/
void ISO7816_warm_reset( void )
{
volatile uint32_t i;
// Clears Reset
ISO7816_IccPowerOff();
/* tb: wait ??? cycles */
for( i=0; i<(400*(BOARD_MCK/1000000)); i++ ) {
}
USART_SIM->US_RHR;
USART_SIM->US_CR = US_CR_RSTSTA | US_CR_RSTIT | US_CR_RSTNACK;
// Sets Reset
ISO7816_IccPowerOn();
}
/**
* Decode ATR trace
* \param pAtr pointer on ATR buffer
*/
void ISO7816_Decode_ATR( uint8_t* pAtr )
{
uint32_t i;
uint32_t j;
uint32_t y;
uint8_t offset;
printf("\r\n");
printf("ATR: Answer To Reset:\r\n");
printf("TS = 0x%X Initial character ",pAtr[0]);
if( pAtr[0] == 0x3B ) {
printf("Direct Convention\r\n");
}
else {
if( pAtr[0] == 0x3F ) {
printf("Inverse Convention\r\n");
}
else {
printf("BAD Convention\r\n");
}
}
printf("T0 = 0x%X Format caracter\r\n",pAtr[1]);
printf(" Number of historical bytes: K = %d\r\n", pAtr[1]&0x0F);
printf(" Presence further interface byte:\r\n");
if( pAtr[1]&0x80 ) {
printf("TA ");
}
if( pAtr[1]&0x40 ) {
printf("TB ");
}
if( pAtr[1]&0x20 ) {
printf("TC ");
}
if( pAtr[1]&0x10 ) {
printf("TD ");
}
if( pAtr[1] != 0 ) {
printf(" present\r\n");
}
i = 2;
y = pAtr[1] & 0xF0;
/* Read ATR Ti */
offset = 1;
while (y) {
if (y & 0x10) { /* TA[i] */
printf("TA[%d] = 0x%X ", offset, pAtr[i]);
if( offset == 1 ) {
printf("FI = %d ", (pAtr[i]>>8));
printf("DI = %d", (pAtr[i]&0x0F));
}
printf("\r\n");
i++;
}
if (y & 0x20) { /* TB[i] */
printf("TB[%d] = 0x%X\r\n", offset, pAtr[i]);
i++;
}
if (y & 0x40) { /* TC[i] */
printf("TC[%d] = 0x%X ", offset, pAtr[i]);
if( offset == 1 ) {
printf("Extra Guard Time: N = %d", pAtr[i]);
}
printf("\r\n");
i++;
}
if (y & 0x80) { /* TD[i] */
printf("TD[%d] = 0x%X\r\n", offset, pAtr[i]);
y = pAtr[i++] & 0xF0;
}
else {
y = 0;
}
offset++;
}
/* Historical Bytes */
printf("Historical bytes:\r\n");
y = pAtr[1] & 0x0F;
for( j=0; j < y; j++ ) {
printf(" 0x%X", pAtr[i]);
i++;
}
printf("\r\n\r\n");
}
void ISO7816_Set_Reset_Pin(const Pin *pPinIso7816RstMC) {
/* Pin ISO7816 initialize */
st_pinIso7816RstMC = (Pin *)pPinIso7816RstMC;
}
/** Initializes a ISO driver
* \param pPinIso7816RstMC Pin ISO 7816 Rst MC
*/
void ISO7816_Init( Usart_info *usart, bool master_clock )
{
uint32_t clk;
TRACE_DEBUG("ISO_Init\r\n");
Usart *us_base = usart->base;
uint32_t us_id = usart->id;
if (master_clock == true) {
clk = US_MR_USCLKS_MCK;
} else {
clk = US_MR_USCLKS_SCK;
}
USART_Configure( us_base,
US_MR_USART_MODE_IS07816_T_0
| clk
| US_MR_NBSTOP_1_BIT
| US_MR_PAR_EVEN
| US_MR_CHRL_8_BIT
| US_MR_CLKO
| US_MR_INACK /* Inhibit errors */
| (3<<24), /* MAX_ITERATION */
1,
0);
/* Disable interrupts */
us_base->US_IDR = (uint32_t) -1;
/* Configure USART */
PMC_EnablePeripheral(us_id);
us_base->US_FIDI = 372; /* by default */
/* Define the baud rate divisor register */
/* CD = MCK / SCK */
/* SCK = FIDI x BAUD = 372 x 9600 */
/* BOARD_MCK */
/* CD = MCK/(FIDI x BAUD) = 48000000 / (372x9600) = 13 */
if (master_clock == true) {
us_base->US_BRGR = BOARD_MCK / (372*9600);
} else {
us_base->US_BRGR = US_BRGR_CD(1);
}
}
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