include/s_record.h

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