FreeCalypso > hg > freecalypso-tools
annotate target-utils/libcommon/cmd_w16.c @ 416:30f6d1c32c6f
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> |
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date | Fri, 26 Oct 2018 07:11:08 +0000 |
parents | e7502631a0f9 |
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1 /* |
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2 * w16 hexaddr xxxx -- write a 16-bit register or memory location |
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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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Mychaela Falconia <falcon@freecalypso.org>
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9 cmd_w16(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, data; |
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14 |
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15 if (parse_args(argbulk, 2, 2, argv, 0) < 0) |
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Mychaela Falconia <falcon@freecalypso.org>
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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 & 1) { |
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22 printf("ERROR: unaligned address\n"); |
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23 return; |
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24 } |
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25 if (parse_hexarg(argv[1], 4, &data) < 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 = data; |
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30 } |