build: cleanup src/pld directory
[openocd.git] / src / pld / xilinx_bit.c
1 /***************************************************************************
2 * Copyright (C) 2006 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
4 * *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) any later version. *
9 * *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
14 * *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
20
21 #ifdef HAVE_CONFIG_H
22 #include "config.h"
23 #endif
24
25 #include "xilinx_bit.h"
26 #include "pld.h"
27 #include <helper/log.h>
28
29 #include <sys/stat.h>
30
31
32 static int read_section(FILE *input_file, int length_size, char section,
33 uint32_t *buffer_length, uint8_t **buffer)
34 {
35 uint8_t length_buffer[4];
36 int length;
37 char section_char;
38 int read_count;
39
40 if ((length_size != 2) && (length_size != 4)) {
41 LOG_ERROR("BUG: length_size neither 2 nor 4");
42 return ERROR_PLD_FILE_LOAD_FAILED;
43 }
44
45 read_count = fread(&section_char, 1, 1, input_file);
46 if (read_count != 1)
47 return ERROR_PLD_FILE_LOAD_FAILED;
48
49 if (section_char != section)
50 return ERROR_PLD_FILE_LOAD_FAILED;
51
52 read_count = fread(length_buffer, 1, length_size, input_file);
53 if (read_count != length_size)
54 return ERROR_PLD_FILE_LOAD_FAILED;
55
56 if (length_size == 4)
57 length = be_to_h_u32(length_buffer);
58 else /* (length_size == 2) */
59 length = be_to_h_u16(length_buffer);
60
61 if (buffer_length)
62 *buffer_length = length;
63
64 *buffer = malloc(length);
65
66 read_count = fread(*buffer, 1, length, input_file);
67 if (read_count != length)
68 return ERROR_PLD_FILE_LOAD_FAILED;
69
70 return ERROR_OK;
71 }
72
73 int xilinx_read_bit_file(struct xilinx_bit_file *bit_file, const char *filename)
74 {
75 FILE *input_file;
76 struct stat input_stat;
77 int read_count;
78
79 if (!filename || !bit_file)
80 return ERROR_COMMAND_SYNTAX_ERROR;
81
82 if (stat(filename, &input_stat) == -1) {
83 LOG_ERROR("couldn't stat() %s: %s", filename, strerror(errno));
84 return ERROR_PLD_FILE_LOAD_FAILED;
85 }
86
87 if (S_ISDIR(input_stat.st_mode)) {
88 LOG_ERROR("%s is a directory", filename);
89 return ERROR_PLD_FILE_LOAD_FAILED;
90 }
91
92 if (input_stat.st_size == 0) {
93 LOG_ERROR("Empty file %s", filename);
94 return ERROR_PLD_FILE_LOAD_FAILED;
95 }
96
97 input_file = fopen(filename, "rb");
98 if (input_file == NULL) {
99 LOG_ERROR("couldn't open %s: %s", filename, strerror(errno));
100 return ERROR_PLD_FILE_LOAD_FAILED;
101 }
102
103 read_count = fread(bit_file->unknown_header, 1, 13, input_file);
104 if (read_count != 13) {
105 LOG_ERROR("couldn't read unknown_header from file '%s'", filename);
106 return ERROR_PLD_FILE_LOAD_FAILED;
107 }
108
109 if (read_section(input_file, 2, 'a', NULL, &bit_file->source_file) != ERROR_OK)
110 return ERROR_PLD_FILE_LOAD_FAILED;
111
112 if (read_section(input_file, 2, 'b', NULL, &bit_file->part_name) != ERROR_OK)
113 return ERROR_PLD_FILE_LOAD_FAILED;
114
115 if (read_section(input_file, 2, 'c', NULL, &bit_file->date) != ERROR_OK)
116 return ERROR_PLD_FILE_LOAD_FAILED;
117
118 if (read_section(input_file, 2, 'd', NULL, &bit_file->time) != ERROR_OK)
119 return ERROR_PLD_FILE_LOAD_FAILED;
120
121 if (read_section(input_file, 4, 'e', &bit_file->length, &bit_file->data) != ERROR_OK)
122 return ERROR_PLD_FILE_LOAD_FAILED;
123
124 LOG_DEBUG("bit_file: %s %s %s,%s %" PRIi32 "", bit_file->source_file, bit_file->part_name,
125 bit_file->date, bit_file->time, bit_file->length);
126
127 fclose(input_file);
128
129 return ERROR_OK;
130 }