95 lines
3.0 KiB
C
95 lines
3.0 KiB
C
/**************************************************************************
|
|
*
|
|
* BRIEF MODULE DESCRIPTION
|
|
* Serial port initialisation.
|
|
*
|
|
* Copyright 2004 IDT Inc. (rischelp@idt.com)
|
|
*
|
|
* 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; either version 2 of the License, or (at your
|
|
* option) any later version.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
|
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
|
|
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
|
|
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
|
|
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* 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.,
|
|
* 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*
|
|
*
|
|
**************************************************************************
|
|
* May 2004 rkt, neb
|
|
*
|
|
* Initial Release
|
|
*
|
|
*
|
|
*
|
|
**************************************************************************
|
|
*/
|
|
|
|
|
|
#include <linux/autoconf.h>
|
|
#include <linux/init.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/tty.h>
|
|
#include <linux/serial.h>
|
|
#include <linux/serial_core.h>
|
|
|
|
#include <asm/time.h>
|
|
#include <asm/cpu.h>
|
|
#include <asm/bootinfo.h>
|
|
#include <asm/irq.h>
|
|
#include <asm/serial.h>
|
|
|
|
#include <asm/idt-boards/rc32434/rc32434.h>
|
|
|
|
extern int __init early_serial_setup(struct uart_port *port);
|
|
|
|
#define BASE_BAUD (1843200 / 16)
|
|
|
|
extern unsigned int idt_cpu_freq;
|
|
|
|
extern int __init setup_serial_port(void)
|
|
{
|
|
static struct uart_port serial_req[2];
|
|
|
|
memset(serial_req, 0, sizeof(serial_req));
|
|
serial_req[0].type = PORT_16550A;
|
|
serial_req[0].line = 0;
|
|
serial_req[0].flags = STD_COM_FLAGS;
|
|
serial_req[0].iotype = SERIAL_IO_MEM;
|
|
serial_req[0].regshift = 2;
|
|
|
|
switch (mips_machtype) {
|
|
case MACH_ARUBA_AP70:
|
|
serial_req[0].irq = 104;
|
|
serial_req[0].mapbase = KSEG1ADDR(0x18058003);
|
|
serial_req[0].membase = (char *) KSEG1ADDR(0x18058003);
|
|
serial_req[0].uartclk = idt_cpu_freq;
|
|
break;
|
|
case MACH_ARUBA_AP65:
|
|
case MACH_ARUBA_AP60:
|
|
default:
|
|
serial_req[0].irq = 12;
|
|
serial_req[0].mapbase = KSEG1ADDR(0xbc000003);
|
|
serial_req[0].membase = (char *) KSEG1ADDR(0xbc000003);
|
|
serial_req[0].uartclk = idt_cpu_freq / 2;
|
|
break;
|
|
}
|
|
|
|
early_serial_setup(&serial_req[0]);
|
|
|
|
return(0);
|
|
}
|