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1 | //----------------------------------------------------------------------------- | |
2 | // This code is licensed to you under the terms of the GNU GPL, version 2 or, | |
3 | // at your option, any later version. See the LICENSE.txt file for the text of | |
4 | // the license. | |
5 | //----------------------------------------------------------------------------- | |
6 | // Flasher frontend tool | |
7 | //----------------------------------------------------------------------------- | |
8 | ||
9 | #include <stdio.h> | |
10 | #include <stdlib.h> | |
11 | #include <string.h> | |
12 | #include <stdint.h> | |
13 | #include <stdbool.h> | |
14 | #include "zlib.h" | |
15 | ||
16 | #define MAX(a,b) ((a)>(b)?(a):(b)) | |
17 | ||
18 | // zlib configuration | |
19 | #define COMPRESS_LEVEL 9 // use best possible compression | |
20 | #define COMPRESS_WINDOW_BITS 15 // default = 15 for a window of 2^15 = 32KBytes | |
21 | #define COMPRESS_MEM_LEVEL 9 // determines the amount of memory allocated during compression. Default = 8. Must be < 9 | |
22 | /* COMPRESS_STRATEGY can be | |
23 | Z_DEFAULT_STRATEGY (the default), | |
24 | Z_FILTERED (more huffmann, less string matching), | |
25 | Z_HUFFMAN_ONLY (huffman only, no string matching) | |
26 | Z_RLE (distances limited to one) | |
27 | Z_FIXED (prevents the use of dynamic Huffman codes) | |
28 | */ | |
29 | #define COMPRESS_STRATEGY Z_DEFAULT_STRATEGY | |
30 | // zlib tuning parameters: | |
31 | #define COMPRESS_GOOD_LENGTH 258 | |
32 | #define COMPRESS_MAX_LAZY 258 | |
33 | #define COMPRESS_MAX_NICE_LENGTH 258 | |
34 | #define COMPRESS_MAX_CHAIN 8192 | |
35 | ||
36 | #define FPGA_INTERLEAVE_SIZE 288 // (the FPGA's internal config frame size is 288 bits. Interleaving with 288 bytes should give best compression) | |
37 | #define FPGA_CONFIG_SIZE 42336 // our current fpga_[lh]f.bit files are 42175 bytes. Rounded up to next multiple of FPGA_INTERLEAVE_SIZE | |
38 | ||
39 | static void usage(char *argv0) | |
40 | { | |
41 | fprintf(stderr, "Usage: %s <infile1> <infile2> ... <infile_n> <outfile>\n\n", argv0); | |
42 | fprintf(stderr, "Combines n FPGA bitstream files and compresses them into one.\n\n"); | |
43 | } | |
44 | ||
45 | ||
46 | static voidpf fpga_deflate_malloc(voidpf opaque, uInt items, uInt size) | |
47 | { | |
48 | fprintf(stderr, "zlib requested %d bytes\n", items*size); | |
49 | return malloc(items*size); | |
50 | } | |
51 | ||
52 | ||
53 | static void fpga_deflate_free(voidpf opaque, voidpf address) | |
54 | { | |
55 | fprintf(stderr, "zlib frees memory\n"); | |
56 | return free(address); | |
57 | } | |
58 | ||
59 | ||
60 | static bool all_feof(FILE *infile[], uint8_t num_infiles) | |
61 | { | |
62 | for (uint16_t i = 0; i < num_infiles; i++) { | |
63 | if (!feof(infile[i])) { | |
64 | return false; | |
65 | } | |
66 | } | |
67 | ||
68 | return true; | |
69 | } | |
70 | ||
71 | ||
72 | int zlib_compress(FILE *infile[], uint8_t num_infiles, FILE *outfile) | |
73 | { | |
74 | uint8_t *fpga_config; | |
75 | uint32_t i; | |
76 | int ret; | |
77 | uint8_t c; | |
78 | z_stream compressed_fpga_stream; | |
79 | ||
80 | fpga_config = malloc(num_infiles * FPGA_CONFIG_SIZE); | |
81 | ||
82 | // read the input files interleaving into fpga_config[] | |
83 | i = 0; | |
84 | do { | |
85 | for(uint16_t j = 0; j < num_infiles; j++) { | |
86 | for(uint16_t k = 0; k < FPGA_INTERLEAVE_SIZE; k++) { | |
87 | c = fgetc(infile[j]); | |
88 | if (!feof(infile[j])) { | |
89 | fpga_config[i++] = c; | |
90 | } else if (num_infiles > 1) { | |
91 | fpga_config[i++] = '\0'; | |
92 | } | |
93 | } | |
94 | } | |
95 | ||
96 | if (i > num_infiles * FPGA_CONFIG_SIZE) { | |
97 | fprintf(stderr, "Input files too big (total of %ld > %d bytes). These are probably not PM3 FPGA config files.", i, num_infiles*FPGA_CONFIG_SIZE); | |
98 | for(uint16_t j = 0; j < num_infiles; j++) { | |
99 | fclose(infile[j]); | |
100 | } | |
101 | return -1; | |
102 | } | |
103 | } while (!all_feof(infile, num_infiles)); | |
104 | ||
105 | fprintf(stderr, "Read a total of %ld bytes from %d files\n", i, num_infiles); | |
106 | ||
107 | // initialize zlib structures | |
108 | compressed_fpga_stream.next_in = fpga_config; | |
109 | compressed_fpga_stream.avail_in = i; | |
110 | compressed_fpga_stream.zalloc = fpga_deflate_malloc; | |
111 | compressed_fpga_stream.zfree = fpga_deflate_free; | |
112 | ||
113 | ret = deflateInit2(&compressed_fpga_stream, | |
114 | COMPRESS_LEVEL, | |
115 | Z_DEFLATED, | |
116 | COMPRESS_WINDOW_BITS, | |
117 | COMPRESS_MEM_LEVEL, | |
118 | COMPRESS_STRATEGY); | |
119 | ||
120 | // estimate the size of the compressed output | |
121 | unsigned int outsize_max = deflateBound(&compressed_fpga_stream, compressed_fpga_stream.avail_in); | |
122 | fprintf(stderr, "Allocating %ld bytes for output file (estimated upper bound)\n", outsize_max); | |
123 | uint8_t *outbuf = malloc(outsize_max); | |
124 | compressed_fpga_stream.next_out = outbuf; | |
125 | compressed_fpga_stream.avail_out = outsize_max; | |
126 | ||
127 | ||
128 | if (ret == Z_OK) { | |
129 | ret = deflateTune(&compressed_fpga_stream, | |
130 | COMPRESS_GOOD_LENGTH, | |
131 | COMPRESS_MAX_LAZY, | |
132 | COMPRESS_MAX_NICE_LENGTH, | |
133 | COMPRESS_MAX_CHAIN); | |
134 | } | |
135 | ||
136 | if (ret == Z_OK) { | |
137 | ret = deflate(&compressed_fpga_stream, Z_FINISH); | |
138 | } | |
139 | ||
140 | fprintf(stderr, "produced %d bytes of output\n", compressed_fpga_stream.total_out); | |
141 | ||
142 | if (ret != Z_STREAM_END) { | |
143 | fprintf(stderr, "Error in deflate(): %d %s\n", ret, compressed_fpga_stream.msg); | |
144 | free(outbuf); | |
145 | deflateEnd(&compressed_fpga_stream); | |
146 | for(uint16_t j = 0; j < num_infiles; j++) { | |
147 | fclose(infile[j]); | |
148 | } | |
149 | fclose(outfile); | |
150 | free(infile); | |
151 | free(fpga_config); | |
152 | return -1; | |
153 | } | |
154 | ||
155 | for (i = 0; i < compressed_fpga_stream.total_out; i++) { | |
156 | fputc(outbuf[i], outfile); | |
157 | } | |
158 | ||
159 | free(outbuf); | |
160 | deflateEnd(&compressed_fpga_stream); | |
161 | for(uint16_t j = 0; j < num_infiles; j++) { | |
162 | fclose(infile[j]); | |
163 | } | |
164 | fclose(outfile); | |
165 | free(infile); | |
166 | free(fpga_config); | |
167 | ||
168 | return 0; | |
169 | ||
170 | } | |
171 | ||
172 | ||
173 | ||
174 | int main(int argc, char **argv) | |
175 | { | |
176 | FILE **infiles; | |
177 | FILE *outfile; | |
178 | ||
179 | if (argc == 1 || argc == 2) { | |
180 | usage(argv[0]); | |
181 | return -1; | |
182 | } | |
183 | ||
184 | infiles = calloc(argc-2, sizeof(FILE*)); | |
185 | ||
186 | for (uint16_t i = 0; i < argc-2; i++) { | |
187 | infiles[i] = fopen(argv[i+1], "rb"); | |
188 | if (infiles[i] == NULL) { | |
189 | fprintf(stderr, "Error. Cannot open input file %s", argv[i+1]); | |
190 | return -1; | |
191 | } | |
192 | } | |
193 | ||
194 | outfile = fopen(argv[argc-1], "wb"); | |
195 | if (outfile == NULL) { | |
196 | fprintf(stderr, "Error. Cannot open output file %s", argv[argc-1]); | |
197 | return -1; | |
198 | } | |
199 | ||
200 | return zlib_compress(infiles, argc-2, outfile); | |
201 | } |