From fabef615ec2fbe1fbe4b69af9482931e781d8d08 Mon Sep 17 00:00:00 2001 From: iceman1001 Date: Thu, 29 Sep 2016 17:43:39 +0200 Subject: [PATCH] CHG: added addresize to legic select struct. CHG: TIMER, it turns out the TC0, TC1 and TC2 is only 16bit. So adjust to use two clocks to get a 32bit timer. CHG: code clean up in legic device side. consistency with variable names.. --- armsrc/legicrf.c | 131 +++++++++++++++++++++----------------------- armsrc/legicrf.h | 9 ++- armsrc/ticks.c | 20 ++++++- armsrc/ticks.h | 2 +- client/cmdhflegic.c | 8 +-- include/legic.h | 3 +- 6 files changed, 93 insertions(+), 80 deletions(-) diff --git a/armsrc/legicrf.c b/armsrc/legicrf.c index 65e4b3e6..7f8c05a6 100644 --- a/armsrc/legicrf.c +++ b/armsrc/legicrf.c @@ -91,8 +91,6 @@ static void setup_timer(void) { # define OPEN_COIL HIGH(GPIO_SSC_DOUT); #endif -uint32_t sendFrameStop = 0; - // Pause pulse, off in 20us / 30ticks, // ONE / ZERO bit pulse, // one == 80us / 120ticks @@ -226,25 +224,18 @@ void frame_sendAsReader(uint32_t data, uint8_t bits){ send = data ^ legic_prng_get_bits(bits); for (; mask < BITMASK(bits); mask <<= 1) { - if (send & mask) { + if (send & mask) COIL_PULSE(RWD_TIME_1); - } else { + else COIL_PULSE(RWD_TIME_0); - } } // Final pause to mark the end of the frame COIL_PULSE(0); - sendFrameStop = GET_TICKS; - uint8_t cmdbytes[] = { - bits, - BYTEx(data, 0), - BYTEx(data, 1), - BYTEx(send, 0), - BYTEx(send, 1) - }; - LogTrace(cmdbytes, sizeof(cmdbytes), starttime, sendFrameStop, NULL, TRUE); + // log + uint8_t cmdbytes[] = {bits, BYTEx(data, 0), BYTEx(data, 1), BYTEx(send, 0), BYTEx(send, 1)}; + LogTrace(cmdbytes, sizeof(cmdbytes), starttime, GET_TICKS, NULL, TRUE); } /* Receive a frame from the card in reader emulation mode, the FPGA and @@ -270,15 +261,16 @@ void frame_sendAsReader(uint32_t data, uint8_t bits){ */ static void frame_receiveAsReader(struct legic_frame * const f, uint8_t bits) { - frame_clean(f); if ( bits > 32 ) return; uint8_t i = bits, edges = 0; uint16_t lsfr = 0; uint32_t the_bit = 1, next_bit_at = 0, data = 0; + uint32_t old_level = 0; + volatile uint32_t level = 0; - int old_level = 0, level = 0; - + frame_clean(f); + AT91C_BASE_PIOA->PIO_ODR = GPIO_SSC_DIN; AT91C_BASE_PIOA->PIO_PER = GPIO_SSC_DIN; @@ -288,12 +280,10 @@ static void frame_receiveAsReader(struct legic_frame * const f, uint8_t bits) { //FIXED time between sending frame and now listening frame. 330us uint32_t starttime = GET_TICKS; - //uint16_t mywait = TAG_FRAME_WAIT - (starttime - sendFrameStop); if ( bits == 6) { //WaitTicks( 495 - 9 - 9 ); WaitTicks( 475 ); } else { - //WaitTicks( mywait ); WaitTicks( 450 ); } @@ -313,7 +303,7 @@ static void frame_receiveAsReader(struct legic_frame * const f, uint8_t bits) { next_bit_at += TAG_BIT_PERIOD; - // We expect 42 edges == ONE + // We expect 42 edges (ONE) if ( edges > 20 ) data ^= the_bit; @@ -324,7 +314,7 @@ static void frame_receiveAsReader(struct legic_frame * const f, uint8_t bits) { f->data = data; f->bits = bits; - //log + // log uint8_t cmdbytes[] = {bits, BYTEx(data, 0), BYTEx(data, 1)}; LogTrace(cmdbytes, sizeof(cmdbytes), starttime, GET_TICKS, NULL, FALSE); } @@ -398,17 +388,17 @@ static void switch_off_tag_rwd(void) { } // calculate crc4 for a legic READ command -static uint32_t legic4Crc(uint8_t legicCmd, uint16_t byte_index, uint8_t value, uint8_t cmd_sz) { +static uint32_t legic4Crc(uint8_t cmd, uint16_t byte_index, uint8_t value, uint8_t cmd_sz) { crc_clear(&legic_crc); - uint32_t temp = (value << cmd_sz) | (byte_index << 1) | legicCmd; + uint32_t temp = (value << cmd_sz) | (byte_index << 1) | cmd; crc_update(&legic_crc, temp, cmd_sz + 8 ); return crc_finish(&legic_crc); } -int legic_read_byte(int byte_index, int cmd_sz) { +int legic_read_byte( uint16_t index, uint8_t cmd_sz) { - uint8_t byte = 0, crc = 0, calcCrc = 0; - uint32_t cmd = (byte_index << 1) | LEGIC_READ; + uint8_t byte, crc, calcCrc = 0; + uint32_t cmd = (index << 1) | LEGIC_READ; WaitTicks(366); @@ -416,9 +406,9 @@ int legic_read_byte(int byte_index, int cmd_sz) { frame_receiveAsReader(¤t_frame, 12); byte = BYTEx(current_frame.data, 0); - - calcCrc = legic4Crc(LEGIC_READ, byte_index, byte, cmd_sz); crc = BYTEx(current_frame.data, 1); + + calcCrc = legic4Crc(LEGIC_READ, index, byte, cmd_sz); if( calcCrc != crc ) { Dbprintf("!!! crc mismatch: expected %x but got %x !!!", calcCrc, crc); @@ -426,7 +416,7 @@ int legic_read_byte(int byte_index, int cmd_sz) { } legic_prng_forward(4); - WaitTicks(40); + WaitTicks(50); return byte; } @@ -500,40 +490,38 @@ int legic_write_byte(uint8_t byte, uint16_t addr, uint8_t addr_sz) { return -1; } -int LegicRfReader(int offset, int bytes, int iv) { +int LegicRfReader(uint16_t offset, uint16_t len, uint8_t iv) { - uint16_t byte_index = 0; + len &= 0x3FF; + + uint16_t i = 0; uint8_t isOK = 1; legic_card_select_t card; LegicCommonInit(); - if ( legic_select_card(&card) ) { + if ( legic_select_card_iv(&card, iv) ) { isOK = 0; goto OUT; } switch_off_tag_rwd(); - if (bytes == -1) - bytes = card.cardsize; - - if (bytes + offset >= card.cardsize) - bytes = card.cardsize - offset; + if (len + offset >= card.cardsize) + len = card.cardsize - offset; - // Start setup and read bytes. setup_phase_reader(iv); LED_B_ON(); - while (byte_index < bytes) { - int r = legic_read_byte(byte_index + offset, card.cmdsize); + while (i < len) { + int r = legic_read_byte(offset + i, card.cmdsize); if (r == -1 || BUTTON_PRESS()) { - if ( MF_DBGLEVEL >= 3) DbpString("operation aborted"); + if ( MF_DBGLEVEL >= 2) DbpString("operation aborted"); isOK = 0; goto OUT; } - cardmem[byte_index++] = r; + cardmem[i++] = r; WDT_HIT(); } @@ -541,7 +529,6 @@ OUT: WDT_HIT(); switch_off_tag_rwd(); LEDsoff(); - uint8_t len = (bytes & 0x3FF); cmd_send(CMD_ACK,isOK,len,0,cardmem,len); return 0; } @@ -587,25 +574,27 @@ OUT: return 0; }*/ -void LegicRfWriter(int offset, int bytes, int iv) { - - int byte_index = 0, addr_sz = 0; +void LegicRfWriter(uint16_t offset, uint16_t bytes, uint8_t iv) { - LegicCommonInit(); + int byte_index = 0; + uint8_t isOK = 1; + legic_card_select_t card; - if ( MF_DBGLEVEL >= 2) DbpString("setting up legic card"); + LegicCommonInit(); - uint32_t tag_type = setup_phase_reader(iv); + if ( legic_select_card_iv(&card, iv) ) { + isOK = 0; + goto OUT; + } switch_off_tag_rwd(); - switch(tag_type) { + switch(card.tagtype) { case 0x0d: if(offset+bytes > 22) { Dbprintf("Error: can not write to 0x%03.3x on MIM22", offset + bytes); return; } - addr_sz = 5; if ( MF_DBGLEVEL >= 2) Dbprintf("MIM22 card found, writing 0x%02.2x - 0x%02.2x ...", offset, offset + bytes); break; case 0x1d: @@ -613,7 +602,6 @@ void LegicRfWriter(int offset, int bytes, int iv) { Dbprintf("Error: can not write to 0x%03.3x on MIM256", offset + bytes); return; } - addr_sz = 8; if ( MF_DBGLEVEL >= 2) Dbprintf("MIM256 card found, writing 0x%02.2x - 0x%02.2x ...", offset, offset + bytes); break; case 0x3d: @@ -621,11 +609,9 @@ void LegicRfWriter(int offset, int bytes, int iv) { Dbprintf("Error: can not write to 0x%03.3x on MIM1024", offset + bytes); return; } - addr_sz = 10; if ( MF_DBGLEVEL >= 2) Dbprintf("MIM1024 card found, writing 0x%03.3x - 0x%03.3x ...", offset, offset + bytes); break; default: - Dbprintf("No or unknown card found, aborting"); return; } @@ -637,33 +623,35 @@ void LegicRfWriter(int offset, int bytes, int iv) { //check if the DCF should be changed if ( ((byte_index+offset) == 0x05) && (bytes >= 0x02) ) { //write DCF in reverse order (addr 0x06 before 0x05) - r = legic_write_byte(cardmem[(0x06-byte_index)], (0x06-byte_index), addr_sz); + r = legic_write_byte(cardmem[(0x06-byte_index)], (0x06-byte_index), card.addrsize); - // write second byte on success... + // write second byte on success if(r == 0) { byte_index++; - r = legic_write_byte(cardmem[(0x06-byte_index)], (0x06-byte_index), addr_sz); + r = legic_write_byte(cardmem[(0x06-byte_index)], (0x06-byte_index), card.addrsize); } } else { - r = legic_write_byte(cardmem[byte_index+offset], byte_index+offset, addr_sz); + r = legic_write_byte(cardmem[byte_index+offset], byte_index+offset, card.addrsize); } if ((r != 0) || BUTTON_PRESS()) { Dbprintf("operation aborted @ 0x%03.3x", byte_index); - switch_off_tag_rwd(); - LEDsoff(); - return; + isOK = 0; + goto OUT; } WDT_HIT(); byte_index++; } - LEDsoff(); - if ( MF_DBGLEVEL >= 1) DbpString("write successful"); + +OUT: + cmd_send(CMD_ACK, isOK, 0,0,0,0); + switch_off_tag_rwd(); + LEDsoff(); } -void LegicRfRawWriter(int address, int byte, int iv) { +void LegicRfRawWriter(int address, int byte, uint8_t iv) { int byte_index = 0, addr_sz = 0; @@ -723,33 +711,40 @@ void LegicRfRawWriter(int address, int byte, int iv) { if ( MF_DBGLEVEL >= 1) DbpString("write successful"); } -int legic_select_card(legic_card_select_t *p_card){ +int legic_select_card_iv(legic_card_select_t *p_card, uint8_t iv){ if ( p_card == NULL ) return 1; - p_card->tagtype = setup_phase_reader(0x1); + p_card->tagtype = setup_phase_reader(iv); switch(p_card->tagtype) { case 0x0d: p_card->cmdsize = 6; + p_card->addrsize = 5; p_card->cardsize = 22; break; case 0x1d: p_card->cmdsize = 9; + p_card->addrsize = 8; p_card->cardsize = 256; break; case 0x3d: p_card->cmdsize = 11; + p_card->addrsize = 10; p_card->cardsize = 1024; break; default: p_card->cmdsize = 0; + p_card->addrsize = 0; p_card->cardsize = 0; return 2; break; } return 0; } +int legic_select_card(legic_card_select_t *p_card){ + return legic_select_card_iv(p_card, 0x01); +} void LegicRfInfo(void){ @@ -763,7 +758,7 @@ void LegicRfInfo(void){ goto OUT; } - // read UID bytes. + // read UID bytes for ( uint8_t i = 0; i < sizeof(card->uid); ++i) { int r = legic_read_byte(i, card->cmdsize); if ( r == -1 ) { @@ -773,7 +768,7 @@ void LegicRfInfo(void){ card->uid[i] = r & 0xFF; } - cmd_send(CMD_ACK, 1 ,0 , 0, buf, sizeof(legic_card_select_t)); + cmd_send(CMD_ACK, 1, 0, 0, buf, sizeof(legic_card_select_t)); OUT: switch_off_tag_rwd(); diff --git a/armsrc/legicrf.h b/armsrc/legicrf.h index f885ef19..40f2d010 100644 --- a/armsrc/legicrf.h +++ b/armsrc/legicrf.h @@ -21,16 +21,19 @@ #include "legic.h" // legic_card_select_t struct extern void LegicRfSimulate(int phase, int frame, int reqresp); -extern int LegicRfReader(int offset, int bytes, int iv); -extern void LegicRfWriter(int offset, int bytes, int iv); -extern void LegicRfRawWriter(int address, int data, int iv); +extern int LegicRfReader(uint16_t offset, uint16_t len, uint8_t iv); +extern void LegicRfWriter(uint16_t offset, uint16_t byte, uint8_t iv); +extern void LegicRfRawWriter(int address, int data, uint8_t iv); extern void LegicRfInfo(void); uint32_t get_key_stream(int skip, int count); void frame_send_tag(uint16_t response, uint8_t bits, uint8_t crypt); void frame_sendAsReader(uint32_t data, uint8_t bits); +int legic_read_byte( uint16_t index, uint8_t cmd_sz); + int legic_select_card(legic_card_select_t *p_card); +int legic_select_card_iv(legic_card_select_t *p_card, uint8_t iv); void ice_legic_setup(); #endif /* __LEGICRF_H */ diff --git a/armsrc/ticks.c b/armsrc/ticks.c index 555685cc..0117030e 100644 --- a/armsrc/ticks.c +++ b/armsrc/ticks.c @@ -178,14 +178,26 @@ uint32_t RAMFUNC GetCountSspClk(void) { // ------------------------------------------------------------------------- void StartTicks(void){ //initialization of the timer + // tc1 is higher 0xFFFF0000 + // tc0 is lower 0x0000FFFF AT91C_BASE_PMC->PMC_PCER |= (1 << 12) | (1 << 13) | (1 << 14); AT91C_BASE_TCB->TCB_BMR = AT91C_TCB_TC0XC0S_NONE | AT91C_TCB_TC1XC1S_TIOA0 | AT91C_TCB_TC2XC2S_NONE; AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKDIS; - AT91C_BASE_TC0->TC_CMR = AT91C_TC_CLKS_TIMER_DIV3_CLOCK; //clock at 48/32 MHz + AT91C_BASE_TC0->TC_CMR = AT91C_TC_CLKS_TIMER_DIV3_CLOCK | // MCK(48MHz) / 32 + AT91C_TC_WAVE | AT91C_TC_WAVESEL_UP_AUTO | AT91C_TC_ACPA_CLEAR | + AT91C_TC_ACPC_SET | AT91C_TC_ASWTRG_SET; + AT91C_BASE_TC0->TC_RA = 1; + AT91C_BASE_TC0->TC_RC = 0xBFFF + 1; // 0xC000 + + AT91C_BASE_TC1->TC_CCR = AT91C_TC_CLKDIS; // timer disable + AT91C_BASE_TC1->TC_CMR = AT91C_TC_CLKS_XC1; // from TC0 + AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKEN | AT91C_TC_SWTRG; + AT91C_BASE_TC1->TC_CCR = AT91C_TC_CLKEN | AT91C_TC_SWTRG; AT91C_BASE_TCB->TCB_BCR = 1; + // wait until timer becomes zero. - while (AT91C_BASE_TC0->TC_CV > 1); + while (AT91C_BASE_TC1->TC_CV >= 1); } // Wait - Spindelay in ticks. // if called with a high number, this will trigger the WDT... @@ -206,7 +218,9 @@ void WaitMS(uint16_t ms){ } // Starts Clock and waits until its reset void ResetTicks(){ - ResetTimer(AT91C_BASE_TC0); + AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKEN | AT91C_TC_SWTRG; + AT91C_BASE_TC1->TC_CCR = AT91C_TC_CLKEN | AT91C_TC_SWTRG; + while (AT91C_BASE_TC1->TC_CV >= 1); } void ResetTimer(AT91PS_TC timer){ timer->TC_CCR = AT91C_TC_CLKEN | AT91C_TC_SWTRG; diff --git a/armsrc/ticks.h b/armsrc/ticks.h index 050cb6ae..17a9ff18 100644 --- a/armsrc/ticks.h +++ b/armsrc/ticks.h @@ -19,7 +19,7 @@ #include "proxmark3.h" #ifndef GET_TICKS -# define GET_TICKS AT91C_BASE_TC0->TC_CV +# define GET_TICKS ((AT91C_BASE_TC1->TC_CV << 16) | AT91C_BASE_TC0->TC_CV) #endif void SpinDelay(int ms); diff --git a/client/cmdhflegic.c b/client/cmdhflegic.c index f4d0827f..7707c076 100644 --- a/client/cmdhflegic.c +++ b/client/cmdhflegic.c @@ -390,8 +390,8 @@ int CmdLegicDecode(const char *Cmd) { int CmdLegicRFRead(const char *Cmd) { // params: - // offset in data - // number of bytes. + // offset in data memory + // number of bytes to read char cmdp = param_getchar(Cmd, 0); if ( cmdp == 'H' || cmdp == 'h' ) return usage_legic_read(); @@ -401,7 +401,7 @@ int CmdLegicRFRead(const char *Cmd) { // OUT-OF-BOUNDS check if ( len + offset > MAX_LENGTH ) { len = MAX_LENGTH - offset; - PrintAndLog("Out-of-bound, shorten len to %d",len); + PrintAndLog("Out-of-bound, shorten len to %d", len); } if ( (IV & 0x7F) != IV ){ @@ -414,7 +414,7 @@ int CmdLegicRFRead(const char *Cmd) { PrintAndLog("LSB of IV must be SET"); } - PrintAndLog("Using IV: 0x%02x", IV); + //PrintAndLog("Using IV: 0x%02x | Offset: 0x%02x | Len: 0x%02x ", IV, offset, len); UsbCommand c = {CMD_READER_LEGIC_RF, {offset, len, IV}}; clearCommandBuffer(); diff --git a/include/legic.h b/include/legic.h index 9f3eccf2..246af0e8 100644 --- a/include/legic.h +++ b/include/legic.h @@ -20,7 +20,8 @@ typedef struct { uint8_t uid[4]; uint32_t tagtype; uint8_t cmdsize; - uint16_t cardsize; + uint8_t addrsize; + uint16_t cardsize; } legic_card_select_t; #endif // _LEGIC_H_ -- 2.39.2