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annotate target-utils/pln-ppb-test/mode_entry.c @ 986:676203b4bf33

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pln-ppb-test: implement mode-entry
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 02 Dec 2023 23:50:07 +0000
parents
children 6b87de9e385b
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986
676203b4bf33 pln-ppb-test: implement mode-entry
Mychaela Falconia <falcon@freecalypso.org>
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1 /*
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2 * mode-entry and mode-exit commands
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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_mode_entry(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 addr, mode;
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14
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15 if (parse_args(argbulk, 2, 2, argv, 0) < 0)
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16 return;
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17 if (parse_hexarg(argv[0], 8, &addr) < 0) {
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18 printf("ERROR: arg1 must be a valid 32-bit hex address\n");
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19 return;
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20 }
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21 if (addr & 0xFFFF) {
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22 printf("ERROR: address is not on 64 KiB boundary\n");
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23 return;
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24 }
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25 if (parse_hexarg(argv[1], 4, &mode) < 0) {
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26 printf("ERROR: arg2 must be a valid 16-bit hex value\n");
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27 return;
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28 }
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29 *(volatile u16 *)(addr + 0xAAA) = 0xAA;
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30 *(volatile u16 *)(addr + 0x554) = 0x55;
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31 *(volatile u16 *)(addr + 0xAAA) = mode;
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32 }