mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-26 14:40:41 +00:00
1a4596601f
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
27 lines
574 B
C
27 lines
574 B
C
/*
|
|
* (C) Copyright 2002
|
|
* Daniel Engström, Omicron Ceti AB, <daniel@omicron.se>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <asm/io.h>
|
|
#include <asm/i8254.h>
|
|
|
|
#define TIMER2_VALUE 0x0a8e /* 440Hz */
|
|
|
|
int pcat_timer_init(void)
|
|
{
|
|
/*
|
|
* initialize 2, used to drive the speaker
|
|
* (to start a beep: write 3 to port 0x61,
|
|
* to stop it again: write 0)
|
|
*/
|
|
outb(PIT_CMD_CTR2 | PIT_CMD_BOTH | PIT_CMD_MODE3,
|
|
PIT_BASE + PIT_COMMAND);
|
|
outb(TIMER2_VALUE & 0xff, PIT_BASE + PIT_T2);
|
|
outb(TIMER2_VALUE >> 8, PIT_BASE + PIT_T2);
|
|
|
|
return 0;
|
|
}
|