FreeCalypso > hg > freecalypso-tools

annotate target-utils/libcommon/cmd_memdump_machine.c @ 416:30f6d1c32c6f

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doc/Flash-boot-defect article removed (no longer relevant) This article is no longer relevant because the issue in question only affected one (1) defective FCDEV3B board which was not and never will be sold.
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 26 Oct 2018 07:11:08 +0000
parents 9214118ae941
children
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1 /*
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2 * This is a machine-oriented memory dump command. The output is in the
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3 * form of S3 records.
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4 */
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5
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6 #include <sys/types.h>
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7 #include "types.h"
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8
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9 void
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10 cmd_memdump_machine(argbulk)
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11 char *argbulk;
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12 {
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13 char *argv[3];
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14 u_long start, length;
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15 u_long addr;
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16 u_char srbuf[0x86], cksum;
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17 int i;
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18
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19 if (parse_args(argbulk, 2, 2, argv, 0) < 0)
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20 return;
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21 if (parse_hexarg(argv[0], 8, &start) < 0) {
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22 printf("ERROR: arg1 must be a valid 32-bit hex address\n");
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23 return;
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24 }
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25 if (parse_hexarg(argv[1], 8, &length) < 0) {
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26 printf("ERROR: arg2 must be a valid 32-bit hex value (length)\n");
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27 return;
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28 }
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29 if (start & 0x7F || length & 0x7F) {
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30 printf("ERROR: implementation limit: 128-byte alignment required\n");
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31 return;
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32 }
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33 srbuf[0] = 0x85;
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34 for (addr = start; addr < start + length; addr += 0x80) {
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35 srbuf[1] = addr >> 24;
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36 srbuf[2] = addr >> 16;
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37 srbuf[3] = addr >> 8;
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38 srbuf[4] = addr;
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39 memcpy(srbuf + 5, addr, 0x80);
0
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40 cksum = 0;
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41 for (i = 0; i < 0x85; i++)
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42 cksum += srbuf[i];
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43 srbuf[i] = ~cksum;
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44 putchar('S');
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45 putchar('3');
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46 for (i = 0; i < 0x86; i++)
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47 printf("%02X", srbuf[i]);
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48 putchar('\n');
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49 }
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50 }