FreeCalypso > hg > freecalypso-tools

annotate target-utils/loadagent/cmd_blankchk.c @ 921:74d284add54d

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fc-fsio: guard against bogus readdir results from the target If the FFS being operated on contains SE K2x0 extended filenames, readdir will return strings that are bad for printing. We need to guard against this possibility, and also against possible other bogosity that could be sent by other alien firmwares.
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 31 Dec 2022 22:55:23 +0000
parents 0da2cf5a999c
children
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1 /*
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2 * Flash blank check command
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3 */
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4
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5 #include <sys/types.h>
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6 #include "types.h"
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7
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8 void
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9 cmd_blankchk(argbulk)
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10 char *argbulk;
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11 {
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12 char *argv[3];
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13 u_long start, length;
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14 u_long addr;
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15 int c;
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16
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17 if (parse_args(argbulk, 2, 2, argv, 0) < 0)
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18 return;
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19 if (parse_hexarg(argv[0], 8, &start) < 0) {
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20 printf("ERROR: arg1 must be a valid 32-bit hex address\n");
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21 return;
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22 }
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23 if (parse_hexarg(argv[1], 8, &length) < 0) {
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24 printf("ERROR: arg2 must be a valid 32-bit hex value (length)\n");
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25 return;
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26 }
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27 for (addr = start; addr < start + length; addr++) {
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28 c = *(volatile u8 *)addr;
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29 if (c != 0xFF) {
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30 printf("Not blank: %02X at %08X\n", c, addr);
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31 return;
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32 }
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33 }
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34 printf("OK\n");
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35 }