X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/f39198789b82c1dd545743778f9d2633a2af8bd8..b067125f98f52d6d33e9dc97a1caa1b4b5bb9cde:/armsrc/fpgaloader.c?ds=sidebyside diff --git a/armsrc/fpgaloader.c b/armsrc/fpgaloader.c index 573aac3a..16fed7c5 100644 --- a/armsrc/fpgaloader.c +++ b/armsrc/fpgaloader.c @@ -26,13 +26,15 @@ extern void Dbprintf(const char *fmt, ...); static int downloaded_bitstream = FPGA_BITSTREAM_ERR; // this is where the bitstreams are located in memory: -extern uint8_t _binary_fpga_lf_bit_start, _binary_fpga_lf_bit_end; -extern uint8_t _binary_fpga_hf_bit_start, _binary_fpga_hf_bit_end; +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 OUTPUT_BUFFER_LEN 80 +#define FPGA_INTERLEAVE_SIZE 288 //----------------------------------------------------------------------------- // Set up the Serial Peripheral Interface as master @@ -171,7 +173,11 @@ bool FpgaSetupSscDma(uint8_t *buf, int len) } -static int get_from_fpga_stream(z_streamp compressed_fpga_stream, uint8_t *output_buffer) +//---------------------------------------------------------------------------- +// Uncompress (inflate) the FPGA data. Returns one decompressed byte with +// each call. +//---------------------------------------------------------------------------- +static int get_from_fpga_combined_stream(z_streamp compressed_fpga_stream, uint8_t *output_buffer) { if (fpga_image_ptr == compressed_fpga_stream->next_out) { // need more data compressed_fpga_stream->next_out = output_buffer; @@ -186,54 +192,63 @@ static int get_from_fpga_stream(z_streamp compressed_fpga_stream, uint8_t *outpu } } + uncompressed_bytes_cnt++; + return *fpga_image_ptr++; } +//---------------------------------------------------------------------------- +// Undo the interleaving of several FPGA config files. FPGA config files +// are combined into one big file: +// 288 bytes from FPGA file 1, followed by 288 bytes from FGPA file 2, etc. +//---------------------------------------------------------------------------- +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)) { + // skip undesired data belonging to other bitstream_versions + get_from_fpga_combined_stream(compressed_fpga_stream, output_buffer); + } + + return get_from_fpga_combined_stream(compressed_fpga_stream, output_buffer); + +} + static voidpf fpga_inflate_malloc(voidpf opaque, uInt items, uInt size) { - Dbprintf("zlib requested %d bytes", items*size); return BigBuf_malloc(items*size); } static void fpga_inflate_free(voidpf opaque, voidpf address) { - Dbprintf("zlib frees memory"); - BigBuf_free_keep_EM(); + BigBuf_free(); } +//---------------------------------------------------------------------------- +// Initialize decompression of the respective (HF or LF) FPGA stream +//---------------------------------------------------------------------------- static bool reset_fpga_stream(int bitstream_version, z_streamp compressed_fpga_stream, uint8_t *output_buffer) { uint8_t header[FPGA_BITSTREAM_FIXED_HEADER_SIZE]; - uint8_t *fpga_image_start; - uint32_t fpga_image_size; - if (bitstream_version == FPGA_BITSTREAM_LF) { - fpga_image_start = &_binary_fpga_lf_bit_start; - fpga_image_size = (uint32_t)&_binary_fpga_lf_bit_end - (uint32_t)&_binary_fpga_lf_bit_start; - } else if (bitstream_version == FPGA_BITSTREAM_HF) { - fpga_image_start = &_binary_fpga_hf_bit_start; - fpga_image_size = (uint32_t)&_binary_fpga_hf_bit_end - (uint32_t)&_binary_fpga_hf_bit_start; - } else { - return false; - } - + uncompressed_bytes_cnt = 0; + // initialize z_stream structure for inflate: - compressed_fpga_stream->next_in = fpga_image_start; - compressed_fpga_stream->avail_in = fpga_image_size; + 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->next_out = output_buffer; compressed_fpga_stream->avail_out = OUTPUT_BUFFER_LEN; compressed_fpga_stream->zalloc = &fpga_inflate_malloc; compressed_fpga_stream->zfree = &fpga_inflate_free; - inflateInit2(compressed_fpga_stream, 15); + inflateInit2(compressed_fpga_stream, 0); fpga_image_ptr = output_buffer; for (uint16_t i = 0; i < FPGA_BITSTREAM_FIXED_HEADER_SIZE; i++) { - header[i] = get_from_fpga_stream(compressed_fpga_stream, output_buffer); + header[i] = get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer); } // Check for a valid .bit file (starts with _bitparse_fixed_header) @@ -259,7 +274,7 @@ static void DownloadFPGA_byte(unsigned char w) } // Download the fpga image starting at current stream position with length FpgaImageLen bytes -static void DownloadFPGA(int FpgaImageLen, z_streamp compressed_fpga_stream, uint8_t *output_buffer) +static void DownloadFPGA(int bitstream_version, int FpgaImageLen, z_streamp compressed_fpga_stream, uint8_t *output_buffer) { Dbprintf("DownloadFPGA(len: %d)", FpgaImageLen); @@ -316,7 +331,7 @@ static void DownloadFPGA(int FpgaImageLen, z_streamp compressed_fpga_stream, uin } for(i = 0; i < FpgaImageLen; i++) { - int b = get_from_fpga_stream(compressed_fpga_stream, output_buffer); + int b = get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer); if (b < 0) { Dbprintf("Error %d during FpgaDownload", b); break; @@ -324,8 +339,6 @@ static void DownloadFPGA(int FpgaImageLen, z_streamp compressed_fpga_stream, uin DownloadFPGA_byte(b); } - Dbprintf("%d bytes loaded into FPGA", i); - // continue to clock FPGA until ready signal goes high i=100000; while ( (i--) && ( !(AT91C_BASE_PIOA->PIO_PDSR & GPIO_FPGA_DONE ) ) ) { @@ -348,13 +361,13 @@ static void DownloadFPGA(int FpgaImageLen, z_streamp compressed_fpga_stream, uin * (big endian), bytes content. Except for section 'e' which has 4 bytes * length. */ -static int bitparse_find_section(char section_name, unsigned int *section_length, z_streamp compressed_fpga_stream, uint8_t *output_buffer) +static int bitparse_find_section(int bitstream_version, char section_name, unsigned int *section_length, z_streamp compressed_fpga_stream, uint8_t *output_buffer) { int result = 0; #define MAX_FPGA_BIT_STREAM_HEADER_SEARCH 100 // maximum number of bytes to search for the requested section uint16_t numbytes = 0; while(numbytes < MAX_FPGA_BIT_STREAM_HEADER_SEARCH) { - char current_name = get_from_fpga_stream(compressed_fpga_stream, output_buffer); + char current_name = get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer); numbytes++; unsigned int current_length = 0; if(current_name < 'a' || current_name > 'e') { @@ -365,12 +378,12 @@ static int bitparse_find_section(char section_name, unsigned int *section_length switch(current_name) { case 'e': /* Four byte length field */ - current_length += get_from_fpga_stream(compressed_fpga_stream, output_buffer) << 24; - current_length += get_from_fpga_stream(compressed_fpga_stream, output_buffer) << 16; + current_length += get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer) << 24; + current_length += get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer) << 16; numbytes += 2; default: /* Fall through, two byte length field */ - current_length += get_from_fpga_stream(compressed_fpga_stream, output_buffer) << 8; - current_length += get_from_fpga_stream(compressed_fpga_stream, output_buffer) << 0; + current_length += get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer) << 8; + current_length += get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer) << 0; numbytes += 2; } @@ -387,7 +400,7 @@ static int bitparse_find_section(char section_name, unsigned int *section_length } for (uint16_t i = 0; i < current_length && numbytes < MAX_FPGA_BIT_STREAM_HEADER_SEARCH; i++) { - get_from_fpga_stream(compressed_fpga_stream, output_buffer); + get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer); numbytes++; } } @@ -396,10 +409,10 @@ static int bitparse_find_section(char section_name, unsigned int *section_length } -//----------------------------------------------------------------------------- -// Find out which FPGA image format is stored in flash, then call DownloadFPGA -// with the right parameters to download the image -//----------------------------------------------------------------------------- +//---------------------------------------------------------------------------- +// Check which FPGA image is currently loaded (if any). If necessary +// decompress and load the correct (HF or LF) image to the FPGA +//---------------------------------------------------------------------------- void FpgaDownloadAndGo(int bitstream_version) { z_stream compressed_fpga_stream; @@ -409,21 +422,29 @@ void FpgaDownloadAndGo(int bitstream_version) if (downloaded_bitstream == bitstream_version) return; + // make sure that we have enough memory to decompress + BigBuf_free(); + if (!reset_fpga_stream(bitstream_version, &compressed_fpga_stream, output_buffer)) { return; } unsigned int bitstream_length; - if(bitparse_find_section('e', &bitstream_length, &compressed_fpga_stream, output_buffer)) { - DownloadFPGA(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); - } +//----------------------------------------------------------------------------- +// 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; @@ -433,13 +454,16 @@ void FpgaGatherVersion(int bitstream_version, char *dst, int len) dst[0] = '\0'; + // ensure that we can allocate enough memory for decompression: + BigBuf_free(); + if (!reset_fpga_stream(bitstream_version, &compressed_fpga_stream, output_buffer)) { return; } - if(bitparse_find_section('a', &fpga_info_len, &compressed_fpga_stream, output_buffer)) { + 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(&compressed_fpga_stream, output_buffer); + char c = (char)get_from_fpga_stream(bitstream_version, &compressed_fpga_stream, output_buffer); if (i < sizeof(tempstr)) { tempstr[i] = c; } @@ -450,30 +474,30 @@ void FpgaGatherVersion(int bitstream_version, char *dst, int len) strncat(dst, "HF ", len-1); } strncat(dst, "FPGA image built", len-1); - if(bitparse_find_section('b', &fpga_info_len, &compressed_fpga_stream, output_buffer)) { + 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(&compressed_fpga_stream, output_buffer); + 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('c', &fpga_info_len, &compressed_fpga_stream, output_buffer)) { + 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(&compressed_fpga_stream, output_buffer); + 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('d', &fpga_info_len, &compressed_fpga_stream, output_buffer)) { + 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(&compressed_fpga_stream, output_buffer); + char c = (char)get_from_fpga_stream(bitstream_version, &compressed_fpga_stream, output_buffer); if (i < sizeof(tempstr)) { tempstr[i] = c; } @@ -481,8 +505,9 @@ void FpgaGatherVersion(int bitstream_version, char *dst, int len) strncat(dst, tempstr, len-1); } - inflateEnd(&compressed_fpga_stream); + strncat(dst, "\n", len-1); + inflateEnd(&compressed_fpga_stream); }