drop one more version of doing serial uart output differently.
coreboot made it kind of complicated to print a character on serial. Not quite as complicated as UEFI, but too much for a good design. Fix it. Signed-off-by: Stefan Reinauer <stepan@coreboot.org> Acked-by: Stefan Reinauer <stepan@coreboot.org> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6191 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
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Stefan Reinauer
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commit
85b0fa1ace
@@ -1,41 +1,36 @@
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/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2003 Eric Biederman
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*
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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; version 2 of the License.
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*
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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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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <console/console.h>
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#include <uart8250.h>
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#include <pc80/mc146818rtc.h>
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/* Base Address */
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#ifndef CONFIG_TTYS0_BASE
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#define CONFIG_TTYS0_BASE 0x3f8
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#endif
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#ifndef CONFIG_TTYS0_BAUD
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#define CONFIG_TTYS0_BAUD 115200
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#endif
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#ifndef CONFIG_TTYS0_DIV
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#if ((115200%CONFIG_TTYS0_BAUD) != 0)
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#error Bad ttys0 baud rate
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#endif
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#define CONFIG_TTYS0_DIV (115200/CONFIG_TTYS0_BAUD)
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#endif
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/* Line Control Settings */
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#ifndef CONFIG_TTYS0_LCS
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/* Set 8bit, 1 stop bit, no parity */
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#define CONFIG_TTYS0_LCS 0x3
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#endif
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#define UART_LCS CONFIG_TTYS0_LCS
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static void ttyS0_init(void)
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{
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static const unsigned char div[8]={1,2,3,6,12,24,48,96};
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int b_index=0;
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unsigned int divisor=CONFIG_TTYS0_DIV;
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static const unsigned char div[8] = { 1, 2, 3, 6, 12, 24, 48, 96 };
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int b_index = 0;
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unsigned int divisor = CONFIG_TTYS0_DIV;
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if(get_option(&b_index,"baud_rate")==0) {
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divisor=div[b_index];
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if (get_option(&b_index, "baud_rate") == 0) {
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divisor = div[b_index];
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}
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uart8250_init(CONFIG_TTYS0_BASE, divisor, CONFIG_TTYS0_LCS);
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uart8250_init(CONFIG_TTYS0_BASE, divisor);
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}
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static void ttyS0_tx_byte(unsigned char data)
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@@ -54,9 +49,8 @@ static int ttyS0_tst_byte(void)
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}
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static const struct console_driver uart8250_console __console = {
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.init = ttyS0_init,
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.tx_byte = ttyS0_tx_byte,
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.rx_byte = ttyS0_rx_byte,
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.init = ttyS0_init,
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.tx_byte = ttyS0_tx_byte,
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.rx_byte = ttyS0_rx_byte,
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.tst_byte = ttyS0_tst_byte,
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};
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