X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/f39198789b82c1dd545743778f9d2633a2af8bd8..refs/pull/245/head:/client/fpga_compress.c?ds=inline diff --git a/client/fpga_compress.c b/client/fpga_compress.c index db1ef81b..28154243 100644 --- a/client/fpga_compress.c +++ b/client/fpga_compress.c @@ -3,90 +3,156 @@ // at your option, any later version. See the LICENSE.txt file for the text of // the license. //----------------------------------------------------------------------------- -// Flasher frontend tool +// Compression tool for FPGA config files. Compress several *.bit files at +// compile time. Decompression is done at run time (see fpgaloader.c). +// This uses the zlib library tuned to this specific case. The small file sizes +// allow to use "insane" parameters for optimum compression ratio. //----------------------------------------------------------------------------- #include #include #include #include +#include #include "zlib.h" #define MAX(a,b) ((a)>(b)?(a):(b)) // zlib configuration -#define COMPRESS_LEVEL 9 // use best possible compression +#define COMPRESS_LEVEL 9 // use best possible compression +#define COMPRESS_WINDOW_BITS 15 // default = max = 15 for a window of 2^15 = 32KBytes +#define COMPRESS_MEM_LEVEL 9 // determines the amount of memory allocated during compression. Default = 8. +/* COMPRESS_STRATEGY can be + Z_DEFAULT_STRATEGY (the default), + Z_FILTERED (more huffmann, less string matching), + Z_HUFFMAN_ONLY (huffman only, no string matching) + Z_RLE (distances limited to one) + Z_FIXED (prevents the use of dynamic Huffman codes) +*/ -#define FPGA_CONFIG_SIZE 42175 -static uint8_t fpga_config[FPGA_CONFIG_SIZE]; +#define COMPRESS_STRATEGY Z_DEFAULT_STRATEGY +// zlib tuning parameters: +#define COMPRESS_GOOD_LENGTH 258 +#define COMPRESS_MAX_LAZY 258 +#define COMPRESS_MAX_NICE_LENGTH 258 +#define COMPRESS_MAX_CHAIN 8192 -static void usage(char *argv0) +#define FPGA_INTERLEAVE_SIZE 288 // (the FPGA's internal config frame size is 288 bits. Interleaving with 288 bytes should give best compression) +#define FPGA_CONFIG_SIZE 42336 // our current fpga_[lh]f.bit files are 42175 bytes. Rounded up to next multiple of FPGA_INTERLEAVE_SIZE + +static void usage(void) { - fprintf(stderr, "Usage: %s \n\n", argv0); + fprintf(stderr, "Usage: fpga_compress ... \n"); + fprintf(stderr, " Combine n FPGA bitstream files and compress them into one.\n\n"); + fprintf(stderr, " fpga_compress -d "); + fprintf(stderr, " Decompress . Write result to "); } static voidpf fpga_deflate_malloc(voidpf opaque, uInt items, uInt size) { - fprintf(stderr, "zlib requested %d bytes\n", items*size); return malloc(items*size); } static void fpga_deflate_free(voidpf opaque, voidpf address) { - fprintf(stderr, "zlib frees memory\n"); return free(address); } -int zlib_compress(FILE *infile, FILE *outfile) +static bool all_feof(FILE *infile[], uint8_t num_infiles) +{ + for (uint16_t i = 0; i < num_infiles; i++) { + if (!feof(infile[i])) { + return false; + } + } + + return true; +} + + +int zlib_compress(FILE *infile[], uint8_t num_infiles, FILE *outfile) { - int i, ret; + uint8_t *fpga_config; + uint32_t i; + int32_t ret; + uint8_t c; z_stream compressed_fpga_stream; + + fpga_config = malloc(num_infiles * FPGA_CONFIG_SIZE); - // read the input file into fpga_config[] and count occurrences of each symbol: + // read the input files. Interleave them into fpga_config[] i = 0; - while(!feof(infile)) { - uint8_t c; - c = fgetc(infile); - fpga_config[i++] = c; - if (i > FPGA_CONFIG_SIZE+1) { - fprintf(stderr, "Input file too big (> %d bytes). This is probably not a PM3 FPGA config file.", FPGA_CONFIG_SIZE); - fclose(infile); - fclose(outfile); - return -1; + do { + + if (i >= num_infiles * FPGA_CONFIG_SIZE) { + fprintf(stderr, "Input files too big (total > %u bytes). These are probably not PM3 FPGA config files.\n", num_infiles*FPGA_CONFIG_SIZE); + for(uint16_t j = 0; j < num_infiles; j++) { + fclose(infile[j]); + } + free(fpga_config); + return(EXIT_FAILURE); } - } + + for(uint16_t j = 0; j < num_infiles; j++) { + for(uint16_t k = 0; k < FPGA_INTERLEAVE_SIZE; k++) { + c = fgetc(infile[j]); + if (!feof(infile[j])) { + fpga_config[i++] = c; + } else if (num_infiles > 1) { + fpga_config[i++] = '\0'; + } + } + } + + } while (!all_feof(infile, num_infiles)); // initialize zlib structures compressed_fpga_stream.next_in = fpga_config; compressed_fpga_stream.avail_in = i; compressed_fpga_stream.zalloc = fpga_deflate_malloc; compressed_fpga_stream.zfree = fpga_deflate_free; - + compressed_fpga_stream.opaque = Z_NULL; + ret = deflateInit2(&compressed_fpga_stream, + COMPRESS_LEVEL, + Z_DEFLATED, + COMPRESS_WINDOW_BITS, + COMPRESS_MEM_LEVEL, + COMPRESS_STRATEGY); + // estimate the size of the compressed output - unsigned int outsize_max = deflateBound(&compressed_fpga_stream, compressed_fpga_stream.avail_in); + uint32_t outsize_max = deflateBound(&compressed_fpga_stream, compressed_fpga_stream.avail_in); uint8_t *outbuf = malloc(outsize_max); compressed_fpga_stream.next_out = outbuf; compressed_fpga_stream.avail_out = outsize_max; - fprintf(stderr, "Allocated %d bytes for output file (estimated upper bound)\n", outsize_max); + + if (ret == Z_OK) { + ret = deflateTune(&compressed_fpga_stream, + COMPRESS_GOOD_LENGTH, + COMPRESS_MAX_LAZY, + COMPRESS_MAX_NICE_LENGTH, + COMPRESS_MAX_CHAIN); + } - ret = deflateInit(&compressed_fpga_stream, COMPRESS_LEVEL); - if (ret == Z_OK) { ret = deflate(&compressed_fpga_stream, Z_FINISH); } - fprintf(stderr, "produced %d bytes of output\n", compressed_fpga_stream.total_out); + fprintf(stderr, "compressed %u input bytes to %lu output bytes\n", i, compressed_fpga_stream.total_out); if (ret != Z_STREAM_END) { - fprintf(stderr, "Error in deflate(): %d %s\n", ret, compressed_fpga_stream.msg); + fprintf(stderr, "Error in deflate(): %i %s\n", ret, compressed_fpga_stream.msg); free(outbuf); deflateEnd(&compressed_fpga_stream); - fclose(infile); + for(uint16_t j = 0; j < num_infiles; j++) { + fclose(infile[j]); + } fclose(outfile); - return -1; + free(infile); + free(fpga_config); + return(EXIT_FAILURE); } for (i = 0; i < compressed_fpga_stream.total_out; i++) { @@ -95,40 +161,130 @@ int zlib_compress(FILE *infile, FILE *outfile) free(outbuf); deflateEnd(&compressed_fpga_stream); - fclose(infile); + for(uint16_t j = 0; j < num_infiles; j++) { + fclose(infile[j]); + } fclose(outfile); - - return 0; + free(infile); + free(fpga_config); + + return(EXIT_SUCCESS); } +int zlib_decompress(FILE *infile, FILE *outfile) +{ + #define DECOMPRESS_BUF_SIZE 1024 + uint8_t outbuf[DECOMPRESS_BUF_SIZE]; + uint8_t inbuf[DECOMPRESS_BUF_SIZE]; + int32_t ret; + + z_stream compressed_fpga_stream; + + // initialize zlib structures + compressed_fpga_stream.next_in = inbuf; + compressed_fpga_stream.avail_in = 0; + compressed_fpga_stream.next_out = outbuf; + compressed_fpga_stream.avail_out = DECOMPRESS_BUF_SIZE; + compressed_fpga_stream.zalloc = fpga_deflate_malloc; + compressed_fpga_stream.zfree = fpga_deflate_free; + compressed_fpga_stream.opaque = Z_NULL; + + ret = inflateInit2(&compressed_fpga_stream, 0); + + do { + if (compressed_fpga_stream.avail_in == 0) { + compressed_fpga_stream.next_in = inbuf; + uint16_t i = 0; + do { + int32_t c = fgetc(infile); + if (!feof(infile)) { + inbuf[i++] = c & 0xFF; + compressed_fpga_stream.avail_in++; + } else { + break; + } + } while (i < DECOMPRESS_BUF_SIZE); + } + + ret = inflate(&compressed_fpga_stream, Z_SYNC_FLUSH); + + if (ret != Z_OK && ret != Z_STREAM_END) { + break; + } + + if (compressed_fpga_stream.avail_out == 0) { + for (uint16_t i = 0; i < DECOMPRESS_BUF_SIZE; i++) { + fputc(outbuf[i], outfile); + } + compressed_fpga_stream.avail_out = DECOMPRESS_BUF_SIZE; + compressed_fpga_stream.next_out = outbuf; + } + } while (ret == Z_OK); + + if (ret == Z_STREAM_END) { // reached end of input + uint16_t i = 0; + while (compressed_fpga_stream.avail_out < DECOMPRESS_BUF_SIZE) { + fputc(outbuf[i++], outfile); + compressed_fpga_stream.avail_out++; + } + fclose(outfile); + fclose(infile); + return(EXIT_SUCCESS); + } else { + fprintf(stderr, "Error. Inflate() returned error %i, %s", ret, compressed_fpga_stream.msg); + fclose(outfile); + fclose(infile); + return(EXIT_FAILURE); + } + +} + int main(int argc, char **argv) { - char *infilename; - char *outfilename; + FILE **infiles; + FILE *outfile; - if (argc != 3) { - usage(argv[0]); - return -1; - } else { - infilename = argv[1]; - outfilename = argv[2]; - } + if (argc == 1 || argc == 2) { + usage(); + return(EXIT_FAILURE); + } + + if (!strcmp(argv[1], "-d")) { // Decompress + infiles = calloc(1, sizeof(FILE*)); + if (argc != 4) { + usage(); + return(EXIT_FAILURE); + } + infiles[0] = fopen(argv[2], "rb"); + if (infiles[0] == NULL) { + fprintf(stderr, "Error. Cannot open input file %s", argv[2]); + return(EXIT_FAILURE); + } + outfile = fopen(argv[3], "wb"); + if (outfile == NULL) { + fprintf(stderr, "Error. Cannot open output file %s", argv[3]); + return(EXIT_FAILURE); + } + return zlib_decompress(infiles[0], outfile); - FILE *infile = fopen(infilename, "rb"); - if (infile == NULL) { - fprintf(stderr, "Error. Cannot open input file %s", infilename); - return -1; + } else { // Compress + + infiles = calloc(argc-2, sizeof(FILE*)); + for (uint16_t i = 0; i < argc-2; i++) { + infiles[i] = fopen(argv[i+1], "rb"); + if (infiles[i] == NULL) { + fprintf(stderr, "Error. Cannot open input file %s", argv[i+1]); + return(EXIT_FAILURE); + } } - - FILE *outfile = fopen(outfilename, "wb"); - if (outfile == NULL) { - fprintf(stderr, "Error. Cannot open output file %s", outfilename); - fclose(infile); - return -1; + outfile = fopen(argv[argc-1], "wb"); + if (outfile == NULL) { + fprintf(stderr, "Error. Cannot open output file %s", argv[argc-1]); + return(EXIT_FAILURE); } - - return zlib_compress(infile, outfile); + return zlib_compress(infiles, argc-2, outfile); + } }