X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/893d0fcc493c9786b553bf9c2455be8a4926bebe..01aa068b6ff34d86dd5d9d9e962aba20cd490050:/armsrc/fpgaloader.c?ds=sidebyside diff --git a/armsrc/fpgaloader.c b/armsrc/fpgaloader.c index 1deb5b7d..8693d6b5 100644 --- a/armsrc/fpgaloader.c +++ b/armsrc/fpgaloader.c @@ -10,20 +10,21 @@ // mode once it is configured. //----------------------------------------------------------------------------- +#include "fpgaloader.h" + #include #include #include -#include "fpgaloader.h" +#include "apps.h" +#include "fpga.h" #include "proxmark3.h" #include "util.h" #include "string.h" #include "BigBuf.h" #include "zlib.h" -extern void Dbprintf(const char *fmt, ...); - // remember which version of the bitstream we have already downloaded to the FPGA -static int downloaded_bitstream = FPGA_BITSTREAM_ERR; +static int downloaded_bitstream = 0; // this is where the bitstreams are located in memory: extern uint8_t _binary_obj_fpga_all_bit_z_start, _binary_obj_fpga_all_bit_z_end; @@ -31,10 +32,7 @@ extern uint8_t _binary_obj_fpga_all_bit_z_start, _binary_obj_fpga_all_bit_z_end; static uint8_t *fpga_image_ptr = NULL; static uint32_t uncompressed_bytes_cnt; -static const uint8_t _bitparse_fixed_header[] = {0x00, 0x09, 0x0f, 0xf0, 0x0f, 0xf0, 0x0f, 0xf0, 0x0f, 0xf0, 0x00, 0x00, 0x01}; -#define FPGA_BITSTREAM_FIXED_HEADER_SIZE sizeof(_bitparse_fixed_header) #define OUTPUT_BUFFER_LEN 80 -#define FPGA_INTERLEAVE_SIZE 288 //----------------------------------------------------------------------------- // Set up the Serial Peripheral Interface as master @@ -114,11 +112,10 @@ void SetupSpi(int mode) } //----------------------------------------------------------------------------- -// Set up the synchronous serial port, with the one set of options that we -// always use when we are talking to the FPGA. Both RX and TX are enabled. +// Set up the synchronous serial port with the set of options that fits +// the FPGA mode. Both RX and TX are always enabled. //----------------------------------------------------------------------------- -void FpgaSetupSsc(void) -{ +void FpgaSetupSsc(uint16_t FPGA_mode) { // First configure the GPIOs, and get ourselves a clock. AT91C_BASE_PIOA->PIO_ASR = GPIO_SSC_FRAME | @@ -132,17 +129,21 @@ void FpgaSetupSsc(void) // Now set up the SSC proper, starting from a known state. AT91C_BASE_SSC->SSC_CR = AT91C_SSC_SWRST; - // RX clock comes from TX clock, RX starts when TX starts, data changes - // on RX clock rising edge, sampled on falling edge + // RX clock comes from TX clock, RX starts on Transmit Start, + // data and frame signal is sampled on falling edge of RK AT91C_BASE_SSC->SSC_RCMR = SSC_CLOCK_MODE_SELECT(1) | SSC_CLOCK_MODE_START(1); - // 8 bits per transfer, no loopback, MSB first, 1 transfer per sync + // 8, 16 or 32 bits per transfer, no loopback, MSB first, 1 transfer per sync // pulse, no output sync - AT91C_BASE_SSC->SSC_RFMR = SSC_FRAME_MODE_BITS_IN_WORD(8) | AT91C_SSC_MSBF | SSC_FRAME_MODE_WORDS_PER_TRANSFER(0); + if ((FPGA_mode & 0x1c0) == FPGA_MAJOR_MODE_HF_READER && FpgaGetCurrent() == FPGA_BITSTREAM_HF) { + AT91C_BASE_SSC->SSC_RFMR = SSC_FRAME_MODE_BITS_IN_WORD(16) | AT91C_SSC_MSBF | SSC_FRAME_MODE_WORDS_PER_TRANSFER(0); + } else { + AT91C_BASE_SSC->SSC_RFMR = SSC_FRAME_MODE_BITS_IN_WORD(8) | AT91C_SSC_MSBF | SSC_FRAME_MODE_WORDS_PER_TRANSFER(0); + } - // clock comes from TK pin, no clock output, outputs change on falling - // edge of TK, sample on rising edge of TK, start on positive-going edge of sync - AT91C_BASE_SSC->SSC_TCMR = SSC_CLOCK_MODE_SELECT(2) | SSC_CLOCK_MODE_START(5); + // TX clock comes from TK pin, no clock output, outputs change on falling + // edge of TK, frame sync is sampled on rising edge of TK, start TX on rising edge of TF + AT91C_BASE_SSC->SSC_TCMR = SSC_CLOCK_MODE_SELECT(2) | SSC_CLOCK_MODE_START(5); // tx framing is the same as the rx framing AT91C_BASE_SSC->SSC_TFMR = AT91C_BASE_SSC->SSC_RFMR; @@ -156,17 +157,16 @@ void FpgaSetupSsc(void) // ourselves, not to another buffer). The stuff to manipulate those buffers // is in apps.h, because it should be inlined, for speed. //----------------------------------------------------------------------------- -bool FpgaSetupSscDma(uint8_t *buf, int len) +bool FpgaSetupSscDma(uint8_t *buf, uint16_t sample_count) { if (buf == NULL) return false; - AT91C_BASE_PDC_SSC->PDC_PTCR = AT91C_PDC_RXTDIS; // Disable DMA Transfer - AT91C_BASE_PDC_SSC->PDC_RPR = (uint32_t) buf; // transfer to this memory address - AT91C_BASE_PDC_SSC->PDC_RCR = len; // transfer this many bytes - AT91C_BASE_PDC_SSC->PDC_RNPR = (uint32_t) buf; // next transfer to same memory address - AT91C_BASE_PDC_SSC->PDC_RNCR = len; // ... with same number of bytes - AT91C_BASE_PDC_SSC->PDC_PTCR = AT91C_PDC_RXTEN; // go! - + AT91C_BASE_PDC_SSC->PDC_PTCR = AT91C_PDC_RXTDIS; // Disable DMA Transfer + AT91C_BASE_PDC_SSC->PDC_RPR = (uint32_t) buf; // transfer to this memory address + AT91C_BASE_PDC_SSC->PDC_RCR = sample_count; // transfer this many samples + AT91C_BASE_PDC_SSC->PDC_RNPR = (uint32_t) buf; // next transfer to same memory address + AT91C_BASE_PDC_SSC->PDC_RNCR = sample_count; // ... with same number of samples + AT91C_BASE_PDC_SSC->PDC_PTCR = AT91C_PDC_RXTEN; // go! return true; } @@ -201,7 +201,7 @@ static int get_from_fpga_combined_stream(z_streamp compressed_fpga_stream, uint8 //---------------------------------------------------------------------------- static int get_from_fpga_stream(int bitstream_version, z_streamp compressed_fpga_stream, uint8_t *output_buffer) { - while((uncompressed_bytes_cnt / FPGA_INTERLEAVE_SIZE) % FPGA_BITSTREAM_MAX != (bitstream_version - 1)) { + while((uncompressed_bytes_cnt / FPGA_INTERLEAVE_SIZE) % fpga_bitstream_num != (bitstream_version - 1)) { // skip undesired data belonging to other bitstream_versions get_from_fpga_combined_stream(compressed_fpga_stream, output_buffer); } @@ -234,7 +234,7 @@ static bool reset_fpga_stream(int bitstream_version, z_streamp compressed_fpga_s // initialize z_stream structure for inflate: compressed_fpga_stream->next_in = &_binary_obj_fpga_all_bit_z_start; - compressed_fpga_stream->avail_in = &_binary_obj_fpga_all_bit_z_start - &_binary_obj_fpga_all_bit_z_end; + compressed_fpga_stream->avail_in = &_binary_obj_fpga_all_bit_z_end - &_binary_obj_fpga_all_bit_z_start; compressed_fpga_stream->next_out = output_buffer; compressed_fpga_stream->avail_out = OUTPUT_BUFFER_LEN; compressed_fpga_stream->zalloc = &fpga_inflate_malloc; @@ -248,8 +248,8 @@ static bool reset_fpga_stream(int bitstream_version, z_streamp compressed_fpga_s header[i] = get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer); } - // Check for a valid .bit file (starts with _bitparse_fixed_header) - if(memcmp(_bitparse_fixed_header, header, FPGA_BITSTREAM_FIXED_HEADER_SIZE) == 0) { + // Check for a valid .bit file (starts with bitparse_fixed_header) + if(memcmp(bitparse_fixed_header, header, FPGA_BITSTREAM_FIXED_HEADER_SIZE) == 0) { return true; } else { return false; @@ -416,8 +416,10 @@ void FpgaDownloadAndGo(int bitstream_version) uint8_t output_buffer[OUTPUT_BUFFER_LEN] = {0x00}; // check whether or not the bitstream is already loaded - if (downloaded_bitstream == bitstream_version) + if (downloaded_bitstream == bitstream_version) { + FpgaEnableTracing(); return; + } // make sure that we have enough memory to decompress BigBuf_free(); BigBuf_Clear_ext(false); @@ -427,110 +429,52 @@ void FpgaDownloadAndGo(int bitstream_version) } unsigned int bitstream_length; - if(bitparse_find_section(bitstream_version, 'e', &bitstream_length, &compressed_fpga_stream, output_buffer)) { + if (bitparse_find_section(bitstream_version, 'e', &bitstream_length, &compressed_fpga_stream, output_buffer)) { DownloadFPGA(bitstream_version, bitstream_length, &compressed_fpga_stream, output_buffer); downloaded_bitstream = bitstream_version; } inflateEnd(&compressed_fpga_stream); + // turn off antenna + FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); + // free eventually allocated BigBuf memory BigBuf_free(); BigBuf_Clear_ext(false); } -//----------------------------------------------------------------------------- -// Gather version information from FPGA image. Needs to decompress the begin -// of the respective (HF or LF) image. -// Note: decompression makes use of (i.e. overwrites) BigBuf[]. It is therefore -// advisable to call this only once and store the results for later use. -//----------------------------------------------------------------------------- -void FpgaGatherVersion(int bitstream_version, char *dst, int len) -{ - unsigned int fpga_info_len; - char tempstr[40] = {0x00}; - z_stream compressed_fpga_stream; - uint8_t output_buffer[OUTPUT_BUFFER_LEN] = {0x00}; - - dst[0] = '\0'; - - // ensure that we can allocate enough memory for decompression: - BigBuf_free(); BigBuf_Clear_ext(false); - - if (!reset_fpga_stream(bitstream_version, &compressed_fpga_stream, output_buffer)) - return; - - if(bitparse_find_section(bitstream_version, 'a', &fpga_info_len, &compressed_fpga_stream, output_buffer)) { - for (uint16_t i = 0; i < fpga_info_len; i++) { - char c = (char)get_from_fpga_stream(bitstream_version, &compressed_fpga_stream, output_buffer); - if (i < sizeof(tempstr)) { - tempstr[i] = c; - } - } - if (!memcmp("fpga_lf", tempstr, 7)) - strncat(dst, "LF ", len-1); - else if (!memcmp("fpga_hf", tempstr, 7)) - strncat(dst, "HF ", len-1); - } - strncat(dst, "FPGA image built", len-1); - if(bitparse_find_section(bitstream_version, 'b', &fpga_info_len, &compressed_fpga_stream, output_buffer)) { - strncat(dst, " for ", len-1); - for (uint16_t i = 0; i < fpga_info_len; i++) { - char c = (char)get_from_fpga_stream(bitstream_version, &compressed_fpga_stream, output_buffer); - if (i < sizeof(tempstr)) { - tempstr[i] = c; - } - } - strncat(dst, tempstr, len-1); - } - if(bitparse_find_section(bitstream_version, 'c', &fpga_info_len, &compressed_fpga_stream, output_buffer)) { - strncat(dst, " on ", len-1); - for (uint16_t i = 0; i < fpga_info_len; i++) { - char c = (char)get_from_fpga_stream(bitstream_version, &compressed_fpga_stream, output_buffer); - if (i < sizeof(tempstr)) { - tempstr[i] = c; - } - } - strncat(dst, tempstr, len-1); - } - if(bitparse_find_section(bitstream_version, 'd', &fpga_info_len, &compressed_fpga_stream, output_buffer)) { - strncat(dst, " at ", len-1); - for (uint16_t i = 0; i < fpga_info_len; i++) { - char c = (char)get_from_fpga_stream(bitstream_version, &compressed_fpga_stream, output_buffer); - if (i < sizeof(tempstr)) { - tempstr[i] = c; - } - } - strncat(dst, tempstr, len-1); - } - - strncat(dst, "\n", len-1); - - inflateEnd(&compressed_fpga_stream); -} - - //----------------------------------------------------------------------------- // Send a 16 bit command/data pair to the FPGA. // The bit format is: C3 C2 C1 C0 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 // where C is the 4 bit command and D is the 12 bit data //----------------------------------------------------------------------------- -void FpgaSendCommand(uint16_t cmd, uint16_t v) -{ +void FpgaSendCommand(uint16_t cmd, uint16_t v) { SetupSpi(SPI_FPGA_MODE); - while ((AT91C_BASE_SPI->SPI_SR & AT91C_SPI_TXEMPTY) == 0); // wait for the transfer to complete + while ((AT91C_BASE_SPI->SPI_SR & AT91C_SPI_TXEMPTY) == 0); // wait for the transfer to complete AT91C_BASE_SPI->SPI_TDR = AT91C_SPI_LASTXFER | cmd | v; // send the data } + //----------------------------------------------------------------------------- // Write the FPGA setup word (that determines what mode the logic is in, read // vs. clone vs. etc.). This is now a special case of FpgaSendCommand() to // avoid changing this function's occurence everywhere in the source code. //----------------------------------------------------------------------------- -void FpgaWriteConfWord(uint8_t v) -{ +void FpgaWriteConfWord(uint16_t v) { FpgaSendCommand(FPGA_CMD_SET_CONFREG, v); } +//----------------------------------------------------------------------------- +// enable/disable FPGA internal tracing +//----------------------------------------------------------------------------- +void FpgaEnableTracing(void) { + FpgaSendCommand(FPGA_CMD_TRACE_ENABLE, 1); +} + +void FpgaDisableTracing(void) { + FpgaSendCommand(FPGA_CMD_TRACE_ENABLE, 0); +} + //----------------------------------------------------------------------------- // Set up the CMOS switches that mux the ADC: four switches, independently // closable, but should only close one at a time. Not an FPGA thing, but @@ -559,12 +503,8 @@ void SetAdcMuxFor(uint32_t whichGpio) } void Fpga_print_status(void) { - Dbprintf("Fgpa"); - switch(downloaded_bitstream) { - case FPGA_BITSTREAM_HF: Dbprintf(" mode....................HF"); break; - case FPGA_BITSTREAM_LF: Dbprintf(" mode....................LF"); break; - default: Dbprintf(" mode....................%d", downloaded_bitstream); break; - } + Dbprintf("Currently loaded FPGA image:"); + Dbprintf(" %s", fpga_version_information[downloaded_bitstream-1]); } int FpgaGetCurrent() {