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http://www.coreboot.org/pipermail/coreboot/2007-October/025740.html

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This function is not called right now,... Please step in and fix up your code,
folks.

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4913 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Stefan Reinauer
2009-11-05 12:38:34 +00:00
committed by Stefan Reinauer
parent e6ad7fa4a6
commit 67fed69653
4 changed files with 116 additions and 2 deletions
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1
src/pc80/Config.lb
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@@ -5,7 +5,6 @@ uses CONFIG_ARCH_X86
object mc146818rtc.o
object isa-dma.o
object i8259.o
#object udelay_timer2.o CONFIG_UDELAY_TIMER2
if CONFIG_UDELAY_IO
object udelay_io.o

1
src/pc80/Makefile.inc
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@@ -1,7 +1,6 @@
obj-y += mc146818rtc.o
obj-y += isa-dma.o
obj-y += i8259.o
#obj-y += udelay_timer2.o CONFIG_UDELAY_TIMER2
obj-$(CONFIG_UDELAY_IO) += udelay_io.o
obj-y += keyboard.o

55
src/pc80/i8254.c Normal file
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@@ -0,0 +1,55 @@
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2009 coresystems GmbH
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <arch/io.h>
#include <pc80/i8254.h>
#include <console/console.h>
/* Initialize i8254 timers */
void setup_i8254(void)
{
/* Timer 0 (taken from biosemu) */
outb(TIMER0_SEL|WORD_ACCESS|MODE3|BINARY_COUNT, TIMER_MODE_PORT);
outb(0x00, TIMER0_PORT);
outb(0x00, TIMER0_PORT);
/* Timer 1 */
outb(TIMER1_SEL|LOBYTE_ACCESS|MODE3|BINARY_COUNT, TIMER_MODE_PORT);
outb(0x12, TIMER1_PORT);
}
#ifdef CONFIG_UDELAY_TIMER2
static void load_timer2(unsigned int ticks)
{
/* Set up the timer gate, turn off the speaker */
outb((inb(PPC_PORTB) & ~PPCB_SPKR) | PPCB_T2GATE, PPC_PORTB);
outb(TIMER2_SEL|WORD_ACCESS|MODE0|BINARY_COUNT, TIMER_MODE_PORT);
outb(ticks & 0xFF, TIMER2_PORT);
outb(ticks >> 8, TIMER2_PORT);
}
void udelay(int usecs)
{
load_timer2((usecs*TICKS_PER_MS)/1000);
while ((inb(PPC_PORTB) & PPCB_T2OUT) == 0)
;
}
#endif