X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/9ab7a6c75566a2d06e56a8a97173c6382a3c5b3d..d5a72d2fee4bcb0377c64c0be7bb22a1d7e18b3a:/armsrc/fpgaloader.c diff --git a/armsrc/fpgaloader.c b/armsrc/fpgaloader.c index 50a6521d..077b378a 100644 --- a/armsrc/fpgaloader.c +++ b/armsrc/fpgaloader.c @@ -1,8 +1,13 @@ //----------------------------------------------------------------------------- +// Jonathan Westhues, April 2006 +// iZsh , 2014 +// +// This code is licensed to you under the terms of the GNU GPL, version 2 or, +// at your option, any later version. See the LICENSE.txt file for the text of +// the license. +//----------------------------------------------------------------------------- // Routines to load the FPGA image, and then to configure the FPGA's major // mode once it is configured. -// -// Jonathan Westhues, April 2006 //----------------------------------------------------------------------------- #include "proxmark3.h" #include "apps.h" @@ -110,14 +115,12 @@ void FpgaSetupSsc(void) 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 - // pulse, no output sync, start on positive-going edge of sync - AT91C_BASE_SSC->SSC_RFMR = SSC_FRAME_MODE_BITS_IN_WORD(8) | - AT91C_SSC_MSBF | SSC_FRAME_MODE_WORDS_PER_TRANSFER(0); + // 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); // clock comes from TK pin, no clock output, outputs change on falling - // edge of TK, start on rising edge of TF - AT91C_BASE_SSC->SSC_TCMR = SSC_CLOCK_MODE_SELECT(2) | - SSC_CLOCK_MODE_START(5); + // 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 framing is the same as the rx framing AT91C_BASE_SSC->SSC_TFMR = AT91C_BASE_SSC->SSC_RFMR; @@ -131,13 +134,20 @@ 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. //----------------------------------------------------------------------------- -void FpgaSetupSscDma(uint8_t *buf, int len) +bool FpgaSetupSscDma(uint8_t *buf, int len) { - AT91C_BASE_PDC_SSC->PDC_RPR = (uint32_t) buf; - AT91C_BASE_PDC_SSC->PDC_RCR = len; - AT91C_BASE_PDC_SSC->PDC_RNPR = (uint32_t) buf; - AT91C_BASE_PDC_SSC->PDC_RNCR = len; - AT91C_BASE_PDC_SSC->PDC_PTCR = AT91C_PDC_RXTEN; + 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! + + return true; } static void DownloadFPGA_byte(unsigned char w) @@ -242,7 +252,7 @@ static void DownloadFPGA(const char *FpgaImage, int FpgaImageLen, int byterevers static char *bitparse_headers_start; static char *bitparse_bitstream_end; -static int bitparse_initialized; +static int bitparse_initialized = 0; /* Simple Xilinx .bit parser. The file starts with the fixed opaque byte sequence * 00 09 0f f0 0f f0 0f f0 0f f0 00 00 01 * After that the format is 1 byte section type (ASCII character), 2 byte length @@ -312,12 +322,28 @@ int bitparse_find_section(char section_name, char **section_start, unsigned int // Find out which FPGA image format is stored in flash, then call DownloadFPGA // with the right parameters to download the image //----------------------------------------------------------------------------- -extern char _binary_fpga_bit_start, _binary_fpga_bit_end; -void FpgaDownloadAndGo(void) +extern char _binary_fpga_lf_bit_start, _binary_fpga_lf_bit_end; +extern char _binary_fpga_hf_bit_start, _binary_fpga_hf_bit_end; +void FpgaDownloadAndGo(int bitstream_version) { + void *bit_start; + void *bit_end; + + // check whether or not the bitstream is already loaded + if (FpgaGatherBitstreamVersion() == bitstream_version) + return; + + if (bitstream_version == FPGA_BITSTREAM_LF) { + bit_start = &_binary_fpga_lf_bit_start; + bit_end = &_binary_fpga_lf_bit_end; + } else if (bitstream_version == FPGA_BITSTREAM_HF) { + bit_start = &_binary_fpga_hf_bit_start; + bit_end = &_binary_fpga_hf_bit_end; + } else + return; /* Check for the new flash image format: Should have the .bit file at &_binary_fpga_bit_start */ - if(bitparse_init(&_binary_fpga_bit_start, &_binary_fpga_bit_end)) { + if(bitparse_init(bit_start, bit_end)) { /* Successfully initialized the .bit parser. Find the 'e' section and * send its contents to the FPGA. */ @@ -341,6 +367,17 @@ void FpgaDownloadAndGo(void) DownloadFPGA((char*)0x102000, 10524*4, 1); } +int FpgaGatherBitstreamVersion() +{ + char temp[256]; + FpgaGatherVersion(temp, sizeof (temp)); + if (!memcmp("LF", temp, 2)) + return FPGA_BITSTREAM_LF; + else if (!memcmp("HF", temp, 2)) + return FPGA_BITSTREAM_HF; + return FPGA_BITSTREAM_ERR; +} + void FpgaGatherVersion(char *dst, int len) { char *fpga_info; @@ -349,13 +386,15 @@ void FpgaGatherVersion(char *dst, int len) if(!bitparse_find_section('e', &fpga_info, &fpga_info_len)) { strncat(dst, "FPGA image: legacy image without version information", len-1); } else { - strncat(dst, "FPGA image built", len-1); /* USB packets only have 48 bytes data payload, so be terse */ -#if 0 if(bitparse_find_section('a', &fpga_info, &fpga_info_len) && fpga_info[fpga_info_len-1] == 0 ) { - strncat(dst, " from ", len-1); - strncat(dst, fpga_info, len-1); + if (!memcmp("fpga_lf", fpga_info, 7)) + strncat(dst, "LF ", len-1); + else if (!memcmp("fpga_hf", fpga_info, 7)) + strncat(dst, "HF ", len-1); } + strncat(dst, "FPGA image built", len-1); +#if 0 if(bitparse_find_section('b', &fpga_info, &fpga_info_len) && fpga_info[fpga_info_len-1] == 0 ) { strncat(dst, " for ", len-1); strncat(dst, fpga_info, len-1);