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annotate target-utils/pln-ppb-test/erase.c @ 990:f34261bb3355

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pln-ppb-test: implement PPB erase
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 03 Dec 2023 00:20:14 +0000
parents target-utils/pln-ppb-test/program.c@a5bff8104b45
children
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1 /*
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2 * erase command for PPB special mode
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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_erase(argbulk)
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10 char *argbulk;
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11 {
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12 char *argv[2];
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13 u_long addr;
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14 u16 buf[256];
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15 int i;
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16
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17 if (parse_args(argbulk, 1, 1, argv, 0) < 0)
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18 return;
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19 if (parse_hexarg(argv[0], 8, &addr) < 0) {
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20 printf("ERROR: argument 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 (addr & 1) {
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24 printf("ERROR: unaligned address\n");
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25 return;
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26 }
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27 *(volatile u16 *)addr = 0x80;
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28 *(volatile u16 *)addr = 0x30;
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29 for (i = 0; i < 256; i++)
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30 buf[i] = *(volatile u16 *)addr;
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31 for (i = 0; i < 256; i++)
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32 printf("%04X%c", buf[i], (i & 15) == 15 ? '\n' : ' ');
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33 }