[lantiq] generate uboot environment data in target
[openwrt.git] / package / rbcfg / src / cyg_crc.h
1 //==========================================================================
2 //
3 // crc.h
4 //
5 // Interface for the CRC algorithms.
6 //
7 //==========================================================================
8 //####ECOSGPLCOPYRIGHTBEGIN####
9 // -------------------------------------------
10 // This file is part of eCos, the Embedded Configurable Operating System.
11 // Copyright (C) 2002 Andrew Lunn
12 //
13 // eCos is free software; you can redistribute it and/or modify it under
14 // the terms of the GNU General Public License as published by the Free
15 // Software Foundation; either version 2 or (at your option) any later version.
16 //
17 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
18 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
19 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
20 // for more details.
21 //
22 // You should have received a copy of the GNU General Public License along
23 // with eCos; if not, write to the Free Software Foundation, Inc.,
24 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
25 //
26 // As a special exception, if other files instantiate templates or use macros
27 // or inline functions from this file, or you compile this file and link it
28 // with other works to produce a work based on this file, this file does not
29 // by itself cause the resulting work to be covered by the GNU General Public
30 // License. However the source code for this file must still be made available
31 // in accordance with section (3) of the GNU General Public License.
32 //
33 // This exception does not invalidate any other reasons why a work based on
34 // this file might be covered by the GNU General Public License.
35 //
36 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
37 // at http://sources.redhat.com/ecos/ecos-license/
38 // -------------------------------------------
39 //####ECOSGPLCOPYRIGHTEND####
40 //==========================================================================
41 //#####DESCRIPTIONBEGIN####
42 //
43 // Author(s): Andrew Lunn
44 // Contributors: Andrew Lunn
45 // Date: 2002-08-06
46 // Purpose:
47 // Description:
48 //
49 // This code is part of eCos (tm).
50 //
51 //####DESCRIPTIONEND####
52 //
53 //==========================================================================
54
55 #ifndef _SERVICES_CRC_CRC_H_
56 #define _SERVICES_CRC_CRC_H_
57
58 #if 0
59 #include <cyg/infra/cyg_type.h>
60 #else
61 #include <stdint.h>
62 typedef uint32_t cyg_uint32;
63 typedef uint16_t cyg_uint16;
64 #endif
65
66 #ifndef __externC
67 # ifdef __cplusplus
68 # define __externC extern "C"
69 # else
70 # define __externC extern
71 # endif
72 #endif
73
74 // Compute a CRC, using the POSIX 1003 definition
75
76 __externC cyg_uint32
77 cyg_posix_crc32(unsigned char *s, int len);
78
79 // Gary S. Brown's 32 bit CRC
80
81 __externC cyg_uint32
82 cyg_crc32(unsigned char *s, int len);
83
84 // Gary S. Brown's 32 bit CRC, but accumulate the result from a
85 // previous CRC calculation
86
87 __externC cyg_uint32
88 cyg_crc32_accumulate(cyg_uint32 crc, unsigned char *s, int len);
89
90 // Ethernet FCS Algorithm
91
92 __externC cyg_uint32
93 cyg_ether_crc32(unsigned char *s, int len);
94
95 // Ethernet FCS algorithm, but accumulate the result from a previous
96 // CRC calculation.
97
98 __externC cyg_uint32
99 cyg_ether_crc32_accumulate(cyg_uint32 crc, unsigned char *s, int len);
100
101 // 16 bit CRC with polynomial x^16+x^12+x^5+1
102
103 __externC cyg_uint16
104 cyg_crc16(unsigned char *s, int len);
105
106 #endif // _SERVICES_CRC_CRC_H_
107
108
109
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