FreeCalypso > hg > freecalypso-tools

annotate target-utils/pln-ppb-test/mode_entry.c @ 1009:4a153059abbb

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doc/DUART28-boot-control: update for fc-linux-patch and fc-usbser-tools
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 12 Dec 2023 06:57:11 +0000
parents 6b87de9e385b
children
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676203b4bf33 pln-ppb-test: implement mode-entry
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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 }
987
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33
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34 void
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35 cmd_mode_exit(argbulk)
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36 char *argbulk;
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37 {
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38 char *argv[2];
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39 u_long addr;
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40
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41 if (parse_args(argbulk, 1, 1, argv, 0) < 0)
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42 return;
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43 if (parse_hexarg(argv[0], 8, &addr) < 0) {
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44 printf("ERROR: argument must be a valid 32-bit hex address\n");
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45 return;
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46 }
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47 if (addr & 0xFFFF) {
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48 printf("ERROR: address is not on 64 KiB boundary\n");
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49 return;
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50 }
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51 *(volatile u16 *)addr = 0x90;
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52 *(volatile u16 *)addr = 0x00;
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53 }