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| Rev | Author | Line No. | Line |
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| 1 | jermar | 1 | /* |
| 324 | palkovsky | 2 | * Copyright (C) 2005 Ondrej Palkovsky |
| 1 | jermar | 3 | * All rights reserved. |
| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * |
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| 9 | * - Redistributions of source code must retain the above copyright |
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| 10 | * notice, this list of conditions and the following disclaimer. |
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| 11 | * - Redistributions in binary form must reproduce the above copyright |
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| 12 | * notice, this list of conditions and the following disclaimer in the |
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| 13 | * documentation and/or other materials provided with the distribution. |
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| 14 | * - The name of the author may not be used to endorse or promote products |
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| 15 | * derived from this software without specific prior written permission. |
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| 16 | * |
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 27 | */ |
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| 28 | |||
| 29 | #include <putchar.h> |
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| 30 | #include <arch/types.h> |
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| 31 | #include <arch/cp0.h> |
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| 324 | palkovsky | 32 | #include <arch/console.h> |
| 1 | jermar | 33 | |
| 324 | palkovsky | 34 | static void cons_putchar(const char ch) |
| 1 | jermar | 35 | { |
| 36 | *((char *) VIDEORAM) = ch; |
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| 37 | } |
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| 324 | palkovsky | 38 | |
| 39 | |||
| 40 | static void serial_putchar(const char ch) |
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| 41 | { |
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| 42 | int i; |
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| 43 | |||
| 44 | if (ch=='\n') |
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| 45 | putchar('\r'); |
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| 46 | |||
| 47 | /* Wait until transmit buffer empty */ |
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| 48 | while (! ((*SERIAL_LSR) & (1<<TRANSMIT_EMPTY_BIT))) |
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| 49 | ; |
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| 50 | *(SERIAL_PORT_BASE) = ch; |
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| 51 | } |
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| 52 | |||
| 326 | palkovsky | 53 | static void (*putchar_func)(const char ch) = cons_putchar; |
| 54 | |||
| 324 | palkovsky | 55 | void console_init(void) |
| 56 | { |
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| 57 | /* The LSR on the start usually contains this value */ |
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| 58 | if (*SERIAL_LSR == 0x60) |
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| 59 | putchar_func = serial_putchar; |
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| 60 | else |
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| 61 | putchar_func = cons_putchar; |
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| 62 | } |
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| 63 | |||
| 64 | void putchar(const char ch) |
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| 65 | { |
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| 66 | putchar_func(ch); |
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| 67 | } |