FreeCalypso > hg > freecalypso-tools
annotate target-utils/loadagent/bindump.c @ 942:fab04df64690
rvinterf/lowlevel: replace libg23 with libprint
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Wed, 24 May 2023 06:55:54 +0000 |
parents | 963d15a808eb |
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rev | line source |
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loadagent: BINDUMP command implemented
Mychaela Falconia <falcon@freecalypso.org>
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1 /* |
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2 * Here we are going to implement a new memory dump command for use by |
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3 * fc-loadtool, sending the dump stream to the host in binary instead of hex |
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4 * S-records. |
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5 * |
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6 * We could send the entire stream continuously without any structure or |
6562364b2033
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7 * breaks, but if we did that, fc-loadtool would not be able to detect a slip |
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8 * (byte loss error) in the serial stream until the end of the dump, |
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9 * potentially minutes long. For this reason we are taking a different |
6562364b2033
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10 * approach: we are going to send the dump stream in blocks of 8192 bytes, |
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11 * with each block preceded by an 8-byte binary header. Loadtool will know |
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12 * and expect the same block structure, and seeing our block headers in the |
6562364b2033
loadagent: BINDUMP command implemented
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13 * right positions in the stream will provide assurance of synchronization. |
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14 */ |
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15 |
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16 #include <sys/types.h> |
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17 #include "types.h" |
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18 |
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19 void |
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20 cmd_memdump_binary(argbulk) |
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21 char *argbulk; |
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22 { |
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23 char *argv[3]; |
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24 u_long start, length; |
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25 u_long addr, remlen; |
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26 unsigned blklen, n; |
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27 |
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28 if (parse_args(argbulk, 2, 2, argv, 0) < 0) |
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29 return; |
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30 if (parse_hexarg(argv[0], 8, &start) < 0) { |
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31 printf("ERROR: arg1 must be a valid 32-bit hex address\n"); |
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32 return; |
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33 } |
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34 if (parse_hexarg(argv[1], 8, &length) < 0) { |
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35 printf("ERROR: arg2 must be a valid 32-bit hex value (length)\n"); |
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36 return; |
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37 } |
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38 addr = start; |
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39 for (remlen = length; remlen; remlen -= blklen) { |
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40 blklen = 8192; |
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41 if (remlen < blklen) |
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42 blklen = remlen; |
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43 serial_out(0x55); |
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44 serial_out(0xAA); |
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45 serial_out(addr >> 24); |
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46 serial_out(addr >> 16); |
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47 serial_out(addr >> 8); |
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48 serial_out(addr); |
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49 serial_out(blklen >> 8); |
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50 serial_out(blklen); |
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51 for (n = blklen; n; n--) { |
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52 serial_out(*(volatile u8 *)addr); |
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53 addr++; |
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54 } |
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55 } |
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56 } |