X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/e61530408c4b3605390748fc544b5afcfda996a3..refs/pull/248/head:/client/fpga_compress.c diff --git a/client/fpga_compress.c b/client/fpga_compress.c index 9e0946b2..28154243 100644 --- a/client/fpga_compress.c +++ b/client/fpga_compress.c @@ -3,219 +3,288 @@ // 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 "sleep.h" -#include "proxmark3.h" -#include "flash.h" -#include "uart.h" -#include "usb_cmd.h" +#include +#include +#include "zlib.h" #define MAX(a,b) ((a)>(b)?(a):(b)) -struct huffman_record { - int16_t symbol; - uint16_t count; - uint8_t code_size; - uint8_t code; - struct huffman_record *left; - struct huffman_record *right; - struct huffman_record *next; - }; +// zlib configuration +#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) +*/ -typedef struct huffman_record huffman_record_t; +#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 -#define FPGA_CONFIG_SIZE 42175 -static uint8_t fpga_config[FPGA_CONFIG_SIZE]; -static huffman_record_t leaf_nodes[256]; -static uint8_t start_code[256]; +#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(char *argv0) +static void usage(void) { - fprintf(stderr, "Usage: %s [-d] \n\n", argv0); - fprintf(stderr, "\t-d\tdecompress\n\n"); + 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 "); } -void add_to_heap(huffman_record_t **heap, huffman_record_t *new_record) +static voidpf fpga_deflate_malloc(voidpf opaque, uInt items, uInt size) { - huffman_record_t *succ = *heap; - huffman_record_t *pred = NULL; - -// fprintf(stderr, "Adding symbol %d, count %d\n", new_record->symbol, new_record->count); - - while (succ != NULL && new_record->count > succ->count) { - pred = succ; - succ = succ->next; - } + return malloc(items*size); +} - // insert new record - new_record->next = succ; - if (pred == NULL) { // first record in heap - *heap = new_record; - } else { - pred->next = new_record; - } + +static void fpga_deflate_free(voidpf opaque, voidpf address) +{ + return free(address); } - -uint16_t set_codesize(huffman_record_t *tree_ptr, uint8_t depth) + +static bool all_feof(FILE *infile[], uint8_t num_infiles) { - uint16_t max_size = depth; - tree_ptr->code_size = depth; - if (tree_ptr->left != NULL) { - max_size = MAX(set_codesize(tree_ptr->left, depth+1), max_size); - } - if (tree_ptr->right != NULL) { - max_size = MAX(set_codesize(tree_ptr->right, depth+1), max_size); + for (uint16_t i = 0; i < num_infiles; i++) { + if (!feof(infile[i])) { + return false; + } } - return max_size; -} + + return true; +} + -int huffman_encode(FILE *infile, FILE *outfile) +int zlib_compress(FILE *infile[], uint8_t num_infiles, FILE *outfile) { - int i; - - // init leaf_nodes: - for (i = 0; i < 256; i++) { - leaf_nodes[i].count = 0; - leaf_nodes[i].symbol = i; - leaf_nodes[i].left = NULL; - leaf_nodes[i].right = NULL; - leaf_nodes[i].next = NULL; - } + 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; - leaf_nodes[c].count++; - 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); } - } - - fprintf(stderr, "\nStatistics: (symbol: count)\n"); - for (i = 0; i < 256; i++) { - fprintf(stderr, "%3d: %5d\n", i, leaf_nodes[i].count); - } - // build the Huffman tree: - huffman_record_t *heap_ptr = NULL; + 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'; + } + } + } - for (i = 0; i < 256; i++) { - add_to_heap(&heap_ptr, &leaf_nodes[i]); - } + } while (!all_feof(infile, num_infiles)); - fprintf(stderr, "\nSorted statistics: (symbol: count)\n"); - for (huffman_record_t *p = heap_ptr; p != NULL; p = p->next) { - fprintf(stderr, "%3d: %5d\n", p->symbol, p->count); - } + // 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); - for (i = 0; i < 255; i++) { - // remove and combine the first two nodes - huffman_record_t *p1, *p2; - p1 = heap_ptr; - p2 = heap_ptr->next; - heap_ptr = p2->next; - huffman_record_t *new_node = malloc(sizeof(huffman_record_t)); - new_node->left = p1; - new_node->right = p2; - new_node->count = p1->count + p2->count; - add_to_heap(&heap_ptr, new_node); + // estimate the size of the compressed output + 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; + + if (ret == Z_OK) { + ret = deflateTune(&compressed_fpga_stream, + COMPRESS_GOOD_LENGTH, + COMPRESS_MAX_LAZY, + COMPRESS_MAX_NICE_LENGTH, + COMPRESS_MAX_CHAIN); } - uint16_t max_codesize = set_codesize(heap_ptr, 0); - - fprintf(stderr, "\nStatistics: (symbol: count, codesize)\n"); - uint32_t compressed_size = 0; - for (i = 0; i < 256; i++) { - fprintf(stderr, "%3d: %5d, %d\n", leaf_nodes[i].symbol, leaf_nodes[i].count, leaf_nodes[i].code_size); - compressed_size += leaf_nodes[i].count * leaf_nodes[i].code_size; + if (ret == Z_OK) { + ret = deflate(&compressed_fpga_stream, Z_FINISH); } - fprintf(stderr, "Compressed size = %ld (%f% of original size)", (compressed_size+7)/8, (float)(compressed_size)/(FPGA_CONFIG_SIZE * 8) * 100); - fprintf(stderr, "Max Codesize = %d bits", max_codesize); - uint8_t code = 0; - for (i = max_codesize; i > 0; i--) { - code = (code + 1) >> 1; - start_code[i] = code; - for (uint16_t j = 0; j < 256; j++) { - if (leaf_nodes[j].code_size == i) { - leaf_nodes[j].code = code; - code++; - } + 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(): %i %s\n", ret, compressed_fpga_stream.msg); + free(outbuf); + deflateEnd(&compressed_fpga_stream); + for(uint16_t j = 0; j < num_infiles; j++) { + fclose(infile[j]); } - } + fclose(outfile); + free(infile); + free(fpga_config); + return(EXIT_FAILURE); + } + + for (i = 0; i < compressed_fpga_stream.total_out; i++) { + fputc(outbuf[i], outfile); + } - - fprintf(stderr, "\nStatistics: (symbol: count, codesize, code)\n"); - for (i = 0; i < 256; i++) { - fprintf(stderr, "%3d: %5d, %d, %02x\n", leaf_nodes[i].symbol, leaf_nodes[i].count, leaf_nodes[i].code_size, leaf_nodes[i].code); + free(outbuf); + deflateEnd(&compressed_fpga_stream); + for(uint16_t j = 0; j < num_infiles; j++) { + fclose(infile[j]); } - - fclose(infile); fclose(outfile); + free(infile); + free(fpga_config); + + return(EXIT_SUCCESS); - return 0; } -int huffman_decode(FILE *infile, FILE *outfile) + +int zlib_decompress(FILE *infile, FILE *outfile) { - return 0; + #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) { - bool decode = false; - char *infilename; - char *outfilename; + FILE **infiles; + FILE *outfile; - if (argc < 3) { - usage(argv[0]); - return -1; + if (argc == 1 || argc == 2) { + usage(); + return(EXIT_FAILURE); } - - if (argc > 3) { - if (!strcmp(argv[1], "-d")) { - decode = true; - infilename = argv[2]; - outfilename = argv[3]; - } else { - usage(argv[0]); - return -1; + + 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); } - } else { - infilename = argv[1]; - outfilename = argv[2]; - } + 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); } - - if (decode) { - return huffman_decode(infile, outfile); - } else { - return huffman_encode(infile, outfile); + return zlib_compress(infiles, argc-2, outfile); } }