FreeCalypso > hg > freecalypso-tools
annotate target-utils/libload/cmd_memload.c @ 439:f4a32c1025a2
fc-rftab2c program written, compiles
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sat, 17 Nov 2018 02:15:07 +0000 |
parents | 9214118ae941 |
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rev | line source |
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initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
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1 /* |
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2 * This module implements the ML (memory load) command, which will be |
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Mychaela Falconia <falcon@freecalypso.org>
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3 * used by fc-chainload. |
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4 * |
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5 * The sole argument to the ML command is the body of an S3 record |
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6 * with the initial "S3" characters stripped, i.e., starting with the |
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7 * "count" byte, followed by the address, data and checksum bytes |
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8 * exactly as in the original S3 record. |
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9 */ |
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10 |
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11 #include "types.h" |
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12 |
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13 void |
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14 cmd_memload(argbulk) |
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15 char *argbulk; |
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16 { |
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17 char *argv[2], *s; |
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18 u8 srecbin[256], cksum; |
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19 int len, i, c; |
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20 u32 addr; |
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21 |
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22 if (parse_args(argbulk, 1, 1, argv, 0) < 0) |
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23 return; |
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24 s = argv[0]; |
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25 if (decode_hex_digits(s, 2, &len) < 0) { |
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26 inv: printf("ERROR: ML argument is invalid\n"); |
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27 return; |
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28 } |
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29 s += 2; |
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30 if (len < 6) |
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31 goto inv; |
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32 srecbin[0] = len; |
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33 for (i = 1; i <= len; i++) { |
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34 if (decode_hex_digits(s, 2, &c) < 0) |
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35 goto inv; |
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36 s += 2; |
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37 srecbin[i] = c; |
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38 } |
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39 cksum = 0; |
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40 for (i = 0; i <= len; i++) |
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41 cksum += srecbin[i]; |
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42 if (cksum != 0xFF) { |
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43 printf("ERROR: bad ML S-record checksum\n"); |
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44 return; |
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45 } |
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46 len -= 5; |
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47 addr = ((u32)srecbin[1] << 24) | |
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48 ((u32)srecbin[2] << 16) | |
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49 ((u32)srecbin[3] << 8) | |
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50 (u32)srecbin[4]; |
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target-utils: use of bcopy() changed to memcpy()
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51 memcpy(addr, srecbin + 5, len); |
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52 } |