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Revision e1192a81bddbf803feb9445a9408a9feec6159aa, 0.9 KB
(checked in by H. Peter Anvin <hpa@…>, 3 years ago)
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core: add a proper interrupt handler for the serial console
If we enable interrupts for the serial console, add a proper interrupt
handler. Since we don't know what vector we'll end up using, or if we
are shared with other devices, simply hook *all* the interrupts and
poll the serial port then.
Signed-off-by: H. Peter Anvin <hpa@…>
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| 1 | ;; ----------------------------------------------------------------------- |
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| 2 | ;; |
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| 3 | ;; Copyright 1994-2009 H. Peter Anvin - All Rights Reserved |
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| 4 | ;; Copyright 2009 Intel Corporation; author: H. Peter Anvin |
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| 5 | ;; |
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| 6 | ;; This program is free software; you can redistribute it and/or modify |
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| 7 | ;; it under the terms of the GNU General Public License as published by |
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| 8 | ;; the Free Software Foundation, Inc., 53 Temple Place Ste 330, |
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| 9 | ;; Boston MA 02111-1307, USA; either version 2 of the License, or |
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| 10 | ;; (at your option) any later version; incorporated herein by reference. |
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| 11 | ;; |
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| 12 | ;; ----------------------------------------------------------------------- |
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| 13 | |
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| 14 | ;; |
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| 15 | ;; io.inc |
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| 16 | ;; |
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| 17 | ;; I/O related macros |
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| 18 | ;; |
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| 19 | |
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| 20 | %ifndef _IO_INC |
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| 21 | %define _IO_INC |
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| 22 | |
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| 23 | %define IO_DELAY_PORT 80h ; Invalid port (we hope!) |
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| 24 | |
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| 25 | %macro io_delay 0.nolist |
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| 26 | out IO_DELAY_PORT,al |
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| 27 | out IO_DELAY_PORT,al |
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| 28 | %endmacro |
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| 29 | |
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| 30 | %macro slow_out 2.nolist |
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| 31 | out %1,%2 |
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| 32 | io_delay |
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| 33 | %endmacro |
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| 34 | |
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| 35 | %endif ; _IO_INC |
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