FreeCalypso > hg > freecalypso-sw
annotate target-utils/libcommon/uartsel.c @ 509:a92cf1059894
osx.c: _osx_config() done, module complete
author | Michael Spacefalcon <msokolov@ivan.Harhan.ORG> |
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date | Tue, 01 Jul 2014 20:02:04 +0000 |
parents | 40f607bb0a2c |
children | a7b0b426f9ca |
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1 /* |
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2 * uart_select_init() figures out which UART was used to load us |
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3 * through the boot ROM, and sets things up for us to use the same |
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4 * UART for our communication. |
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5 */ |
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6 |
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7 #include "types.h" |
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8 #include "romvars.h" |
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9 #include "ns16550.h" |
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10 #include "halt.h" |
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11 |
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12 extern struct boot_rom_vars rom_vars; |
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13 |
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14 struct ns16550_regs *uart_base; |
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15 char *uart_name; |
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16 |
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17 uart_select_init() |
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18 { |
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19 switch (rom_vars.uart_id) { |
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20 case 0: |
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21 uart_base = (struct ns16550_regs *) 0xFFFF5800; |
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22 uart_name = "MODEM"; |
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23 break; |
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24 case 1: |
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25 uart_base = (struct ns16550_regs *) 0xFFFF5000; |
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26 uart_name = "IrDA"; |
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27 break; |
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28 default: |
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29 _exit(HALTCODE_INVALIDUART); |
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30 } |
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31 } |