X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/80fe72357062b8c5b22936d84e46e9b2c1e4b6e2..0cbe0cb8d6ab56fae79fd757b42b0667d37f48c8:/armsrc/util.c diff --git a/armsrc/util.c b/armsrc/util.c index cce9bed8..120e7b44 100644 --- a/armsrc/util.c +++ b/armsrc/util.c @@ -12,53 +12,52 @@ #include "util.h" #include "string.h" #include "apps.h" - - +#include "BigBuf.h" void print_result(char *name, uint8_t *buf, size_t len) { - uint8_t *p = buf; + uint8_t *p = buf; - if ( len % 16 == 0 ) { - for(; p-buf < len; p += 16) - Dbprintf("[%s:%d/%d] %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x", + if ( len % 16 == 0 ) { + for(; p-buf < len; p += 16) + Dbprintf("[%s:%d/%d] %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x", name, p-buf, len, p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7],p[8], p[9], p[10], p[11], p[12], p[13], p[14], p[15] - ); - } - else { - for(; p-buf < len; p += 8) - Dbprintf("[%s:%d/%d] %02x %02x %02x %02x %02x %02x %02x %02x", name, p-buf, len, p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]); - } + ); + } + else { + for(; p-buf < len; p += 8) + Dbprintf("[%s:%d/%d] %02x %02x %02x %02x %02x %02x %02x %02x", + name, + p-buf, + len, + p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]); + } } size_t nbytes(size_t nbits) { - return (nbits/8)+((nbits%8)>0); + return (nbits >> 3)+((nbits % 8) > 0); } uint32_t SwapBits(uint32_t value, int nrbits) { - int i; uint32_t newvalue = 0; - for(i = 0; i < nrbits; i++) { + for(int i = 0; i < nrbits; i++) { newvalue ^= ((value >> i) & 1) << (nrbits - 1 - i); } return newvalue; } -void num_to_bytes(uint64_t n, size_t len, uint8_t* dest) -{ +void num_to_bytes(uint64_t n, size_t len, uint8_t* dest) { while (len--) { dest[len] = (uint8_t) n; n >>= 8; } } -uint64_t bytes_to_num(uint8_t* src, size_t len) -{ +uint64_t bytes_to_num(uint8_t* src, size_t len) { uint64_t num = 0; - while (len--) - { + while (len--) { num = (num << 8) | (*src); src++; } @@ -66,13 +65,14 @@ uint64_t bytes_to_num(uint8_t* src, size_t len) } // RotateLeft - Ultralight, Desfire -void rol(uint8_t *data, const size_t len){ +void rol(uint8_t *data, const size_t len) { uint8_t first = data[0]; for (size_t i = 0; i < len-1; i++) { data[i] = data[i+1]; } data[len-1] = first; } + void lsl (uint8_t *data, size_t len) { for (size_t n = 0; n < len - 1; n++) { data[n] = (data[n] << 1) | (data[n+1] >> 7); @@ -267,15 +267,15 @@ void FormatVersionInformation(char *dst, int len, const char *prefix, void *vers dst[0] = 0; strncat(dst, prefix, len-1); if(v->magic != VERSION_INFORMATION_MAGIC) { - strncat(dst, "Missing/Invalid version information", len - strlen(dst) - 1); + strncat(dst, "Missing/Invalid version information\n", len - strlen(dst) - 1); return; } if(v->versionversion != 1) { - strncat(dst, "Version information not understood", len - strlen(dst) - 1); + strncat(dst, "Version information not understood\n", len - strlen(dst) - 1); return; } if(!v->present) { - strncat(dst, "Version information not available", len - strlen(dst) - 1); + strncat(dst, "Version information not available\n", len - strlen(dst) - 1); return; } @@ -288,6 +288,7 @@ void FormatVersionInformation(char *dst, int len, const char *prefix, void *vers strncat(dst, " ", len - strlen(dst) - 1); strncat(dst, v->buildtime, len - strlen(dst) - 1); + strncat(dst, "\n", len - strlen(dst) - 1); } // ------------------------------------------------------------------------- @@ -302,11 +303,12 @@ void FormatVersionInformation(char *dst, int len, const char *prefix, void *vers void StartTickCount() { -// must be 0x40, but on my cpu - included divider is optimal -// 0x20 - 1 ms / bit -// 0x40 - 2 ms / bit - - AT91C_BASE_RTTC->RTTC_RTMR = AT91C_RTTC_RTTRST + 0x001D; // was 0x003B + // This timer is based on the slow clock. The slow clock frequency is between 22kHz and 40kHz. + // We can determine the actual slow clock frequency by looking at the Main Clock Frequency Register. + uint16_t mainf = AT91C_BASE_PMC->PMC_MCFR & 0xffff; // = 16 * main clock frequency (16MHz) / slow clock frequency + // set RealTimeCounter divider to count at 1kHz: + AT91C_BASE_RTTC->RTTC_RTMR = AT91C_RTTC_RTTRST | ((256000 + (mainf/2)) / mainf); + // note: worst case precision is approx 2.5% } /* @@ -328,8 +330,8 @@ void StartCountUS() // fast clock AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKDIS; // timer disable AT91C_BASE_TC0->TC_CMR = AT91C_TC_CLKS_TIMER_DIV3_CLOCK | // MCK(48MHz)/32 -- tick=1.5mks - AT91C_TC_WAVE | AT91C_TC_WAVESEL_UP_AUTO | AT91C_TC_ACPA_CLEAR | - AT91C_TC_ACPC_SET | AT91C_TC_ASWTRG_SET; + 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 @@ -342,17 +344,20 @@ void StartCountUS() } uint32_t RAMFUNC GetCountUS(){ - return (AT91C_BASE_TC1->TC_CV * 0x8000) + ((AT91C_BASE_TC0->TC_CV / 15) * 10); + //return (AT91C_BASE_TC1->TC_CV * 0x8000) + ((AT91C_BASE_TC0->TC_CV / 15) * 10); + // By suggestion from PwPiwi, http://www.proxmark.org/forum/viewtopic.php?pid=17548#p17548 + //return (AT91C_BASE_TC1->TC_CV * 0x8000) + ((AT91C_BASE_TC0->TC_CV * 2) / 3); + return (AT91C_BASE_TC1->TC_CV * 0x8000) + ((AT91C_BASE_TC0->TC_CV << 1) / 3); } -static uint32_t GlobalUsCounter = 0; +// static uint32_t GlobalUsCounter = 0; -uint32_t RAMFUNC GetDeltaCountUS(){ - uint32_t g_cnt = GetCountUS(); - uint32_t g_res = g_cnt - GlobalUsCounter; - GlobalUsCounter = g_cnt; - return g_res; -} +// uint32_t RAMFUNC GetDeltaCountUS(){ + // uint32_t g_cnt = GetCountUS(); + // uint32_t g_res = g_cnt - GlobalUsCounter; + // GlobalUsCounter = g_cnt; + // return g_res; +// } // ------------------------------------------------------------------------- @@ -393,17 +398,17 @@ void StartCountSspClk() AT91C_BASE_TC2->TC_CMR = AT91C_TC_CLKS_XC2 // TC2 clock = XC2 clock = TIOA0 | AT91C_TC_WAVE // Waveform Mode | AT91C_TC_WAVESEL_UP; // just count - + AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKEN; // enable TC0 AT91C_BASE_TC1->TC_CCR = AT91C_TC_CLKEN; // enable TC1 AT91C_BASE_TC2->TC_CCR = AT91C_TC_CLKEN; // enable TC2 - // - // synchronize the counter with the ssp_frame signal. Note: FPGA must be in any iso14446 mode, otherwise the frame signal would not be present - // + // synchronize the counter with the ssp_frame signal. + // Note: FPGA must be in any iso14443 mode, otherwise the frame signal would not be present while(!(AT91C_BASE_PIOA->PIO_PDSR & GPIO_SSC_FRAME)); // wait for ssp_frame to go high (start of frame) while(AT91C_BASE_PIOA->PIO_PDSR & GPIO_SSC_FRAME); // wait for ssp_frame to be low while(!(AT91C_BASE_PIOA->PIO_PDSR & GPIO_SSC_CLK)); // wait for ssp_clk to go high + // note: up to now two ssp_clk rising edges have passed since the rising edge of ssp_frame // it is now safe to assert a sync signal. This sets all timers to 0 on next active clock edge AT91C_BASE_TCB->TCB_BCR = 1; // assert Sync (set all timers to 0 on next active clock edge) @@ -411,81 +416,16 @@ void StartCountSspClk() // at the next (4th) ssp_clk rising edge, TC0 (the low word of our counter) will be reset. From now on, // whenever the last three bits of our counter go 0, we can be sure to be in the middle of a frame transfer. // (just started with the transfer of the 4th Bit). - // The high word of the counter (TC2) will not reset until the low word (TC0) overflows. Therefore need to wait quite some time before - // we can use the counter. + + // The high word of the counter (TC2) will not reset until the low word (TC0) overflows. + // Therefore need to wait quite some time before we can use the counter. while (AT91C_BASE_TC0->TC_CV < 0xFFF0); } - uint32_t RAMFUNC GetCountSspClk(){ - uint32_t tmp_count; - tmp_count = (AT91C_BASE_TC2->TC_CV << 16) | AT91C_BASE_TC0->TC_CV; - if ((tmp_count & 0x0000ffff) == 0) { //small chance that we may have missed an increment in TC2 + uint32_t tmp_count = (AT91C_BASE_TC2->TC_CV << 16) | AT91C_BASE_TC0->TC_CV; + if ((tmp_count & 0x0000ffff) == 0) //small chance that we may have missed an increment in TC2 return (AT91C_BASE_TC2->TC_CV << 16); - } - else { - return tmp_count; - } -} - -/** - This is a function to store traces. All protocols can use this generic tracer-function. - The traces produced by calling this function can be fetched on the client-side - by 'hf list raw', alternatively 'hf list ' for protocol-specific - annotation of commands/responses. - -**/ -bool RAMFUNC LogTrace(const uint8_t *btBytes, uint16_t iLen, uint32_t timestamp_start, uint32_t timestamp_end, uint8_t *parity, bool readerToTag) -{ - if (!tracing) return FALSE; - - uint16_t num_paritybytes = (iLen-1)/8 + 1; // number of valid paritybytes in *parity - uint16_t duration = timestamp_end - timestamp_start; - - // Return when trace is full - if (traceLen + sizeof(iLen) + sizeof(timestamp_start) + sizeof(duration) + num_paritybytes + iLen >= TRACE_SIZE) { - tracing = FALSE; // don't trace any more - return FALSE; - } - - // Traceformat: - // 32 bits timestamp (little endian) - // 16 bits duration (little endian) - // 16 bits data length (little endian, Highest Bit used as readerToTag flag) - // y Bytes data - // x Bytes parity (one byte per 8 bytes data) - - // timestamp (start) - trace[traceLen++] = ((timestamp_start >> 0) & 0xff); - trace[traceLen++] = ((timestamp_start >> 8) & 0xff); - trace[traceLen++] = ((timestamp_start >> 16) & 0xff); - trace[traceLen++] = ((timestamp_start >> 24) & 0xff); - - // duration - trace[traceLen++] = ((duration >> 0) & 0xff); - trace[traceLen++] = ((duration >> 8) & 0xff); - - // data length - trace[traceLen++] = ((iLen >> 0) & 0xff); - trace[traceLen++] = ((iLen >> 8) & 0xff); - - // readerToTag flag - if (!readerToTag) { - trace[traceLen - 1] |= 0x80; - } - - // data bytes - if (btBytes != NULL && iLen != 0) { - memcpy(trace + traceLen, btBytes, iLen); - } - traceLen += iLen; - - // parity bytes - if (parity != NULL && iLen != 0) { - memcpy(trace + traceLen, parity, num_paritybytes); - } - traceLen += num_paritybytes; - - return TRUE; + return tmp_count; }