2012-09-26 23:59:58 -04:00
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/*
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Copyright (C) 2012, Aaron Lindsay <aaron@aclindsay.com>
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This file is part of Aedrix.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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2012-09-10 23:37:12 -04:00
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#define PL011_SERIAL_BASE 0x10009000
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2012-09-07 23:51:04 -04:00
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#define PL011_SERIAL_FLAG_REGISTER 0x18
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#define PL011_SERIAL_BUFFER_FULL (1 << 5)
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void pl011_putc(char c)
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{
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/* Wait until the serial buffer is empty */
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while (*(volatile unsigned long*)(PL011_SERIAL_BASE + PL011_SERIAL_FLAG_REGISTER)
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& (PL011_SERIAL_BUFFER_FULL));
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/* When it's empty, put our character at the base */
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*(volatile unsigned long*)PL011_SERIAL_BASE = c;
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}
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