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83d290c5 | 1 | /* SPDX-License-Identifier: GPL-2.0+ */ |
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2 | /* |
3 | * (C) Copyright 2000 | |
4 | * Wolfgang Denk, DENX Software Engineering, [email protected]. | |
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5 | */ |
6 | ||
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7 | #include <linux/types.h> |
8 | ||
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9 | /*-------------------------------------------------------------------------- |
10 | * | |
11 | * Motorola S-Record Format: | |
12 | * | |
13 | * Motorola S-Records are an industry-standard format for | |
14 | * transmitting binary files to target systems and PROM | |
15 | * programmers. LSI Logic have extended this standard to include | |
16 | * an S4-record containing an address and a symbol. | |
17 | * | |
18 | * The extended S-record standard is as follows: | |
19 | * | |
20 | * S<type><length><address><data....><checksum> | |
21 | * S4<length><address><name>,<checksum> | |
22 | * | |
23 | * Where: | |
24 | * | |
25 | * type | |
26 | * is the record type. Where: | |
27 | * | |
28 | * 0 starting record (optional) | |
29 | * 1 data record with 16-bit address | |
30 | * 2 data record with 24-bit address | |
31 | * 3 data record with 32-bit address | |
32 | * 4 symbol record (LSI extension) | |
fc0b5948 | 33 | * 5 number of data records in preceding block |
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34 | * 6 unused |
35 | * 7 ending record for S3 records | |
36 | * 8 ending record for S2 records | |
37 | * 9 ending record for S1 records | |
38 | * | |
39 | * length | |
40 | * is two hex characters. This defines the length of the | |
41 | * record in bytes (not characters). It includes the address | |
42 | * field, the data field, and the checksum field. | |
43 | * | |
44 | * address | |
45 | * is 4, 6, or 8 characters. Corresponding to a 16-, 24-, or | |
46 | * 32-bit address. The address field for S4 records is | |
47 | * always 32 bits. | |
48 | * | |
49 | * data | |
50 | * | |
51 | * Are the data bytes. Each pair of hex characters represent | |
52 | * one byte in memory. | |
53 | * | |
54 | * name | |
55 | * Is the symbol name. The symbol is terminated by a ','. | |
56 | * | |
57 | * checksum | |
58 | * Is the one's complement of the 8-bit checksum. | |
59 | * | |
60 | * Example | |
61 | * | |
62 | * S0030000FC | |
63 | * . | |
64 | * . | |
65 | * S325000004403C0880018D08DD900000000011000026000000003C0880012508DC50C50000B401 | |
66 | * S32500000460C50100B8C50200BCC50300C0C50400C4C50500C8C50600CCC50700D0C50800D4FA | |
67 | * S32500000480C50900D8C50A00DCC50B00E0C50C00E4C50D00E8C50E00ECC50F00F0C51000F49A | |
68 | * S325000004A0C51100F8C51200FCC5130100C5140104C5150108C516010CC5170110C518011434 | |
69 | * . | |
70 | * . | |
71 | * S70500000000FA | |
72 | * | |
73 | * The S0 record starts the file. The S3 records contain the | |
74 | * data. The S7 record contains the entry address and terminates | |
75 | * the download. | |
76 | * | |
77 | *-------------------------------------------------------------------------- | |
78 | */ | |
79 | ||
80 | #define SREC_START 0 /* Start Record (module name) */ | |
81 | #define SREC_DATA2 1 /* Data Record with 2 byte address */ | |
82 | #define SREC_DATA3 2 /* Data Record with 3 byte address */ | |
83 | #define SREC_DATA4 3 /* Data Record with 4 byte address */ | |
84 | #define SREC_COUNT 5 /* Count Record (previously transmitted) */ | |
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85 | #define SREC_END4 7 /* End Record with 4 byte start address */ |
86 | #define SREC_END3 8 /* End Record with 3 byte start address */ | |
87 | #define SREC_END2 9 /* End Record with 2 byte start address */ | |
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88 | #define SREC_EMPTY 10 /* Empty Record without any data */ |
89 | ||
90 | #define SREC_REC_OK SREC_EMPTY /* last code without error condition */ | |
91 | ||
92 | #define SREC_E_BADTYPE -1 /* no valid S-Record */ | |
93 | #define SREC_E_NOSREC -2 /* line format differs from s-record */ | |
94 | #define SREC_E_BADCHKS -3 /* checksum error in an s-record line */ | |
95 | ||
96 | #define SREC_MAXRECLEN (512 + 4) /* max ASCII record length */ | |
97 | #define SREC_MAXBINLEN 255 /* resulting binary length */ | |
98 | ||
99 | int srec_decode (char *input, int *count, ulong *addr, char *data); |