mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-19 07:36:16 +02:00
4f531230a3
openwrt. this gives us the ability to better support different hardware models, without changing any external tar-balls. only et.o and wl.o is missing and is fetched from my webserver. git-svn-id: svn://svn.openwrt.org/openwrt/trunk/openwrt@379 3c298f89-4303-0410-b956-a3cf2f4a3e73
121 lines
3.5 KiB
C
121 lines
3.5 KiB
C
/*
|
|
* Copyright 2004, Broadcom Corporation
|
|
* All Rights Reserved.
|
|
*
|
|
* THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
|
|
* KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
|
|
* SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
|
|
* FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
|
|
*
|
|
* Carsten Langgaard, carstenl@mips.com
|
|
* Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved.
|
|
*
|
|
* ########################################################################
|
|
*
|
|
* This program is free software; you can distribute it and/or modify it
|
|
* under the terms of the GNU General Public License (Version 2) as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope 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.,
|
|
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
|
|
*
|
|
* ########################################################################
|
|
*
|
|
* This is the interface to the remote debugger stub.
|
|
*
|
|
*/
|
|
|
|
#include <linux/serialP.h>
|
|
#include <linux/serial_reg.h>
|
|
|
|
#include <asm/serial.h>
|
|
#include <asm/io.h>
|
|
|
|
static struct async_struct kdb_port_info = {0};
|
|
|
|
static __inline__ unsigned int serial_in(struct async_struct *info, int offset)
|
|
{
|
|
return readb((unsigned long) info->iomem_base +
|
|
(offset<<info->iomem_reg_shift));
|
|
}
|
|
|
|
static __inline__ void serial_out(struct async_struct *info, int offset,
|
|
int value)
|
|
{
|
|
writeb(value, (unsigned long) info->iomem_base +
|
|
(offset<<info->iomem_reg_shift));
|
|
}
|
|
|
|
void rs_kgdb_hook(struct serial_state *ser) {
|
|
int t;
|
|
|
|
kdb_port_info.state = ser;
|
|
kdb_port_info.magic = SERIAL_MAGIC;
|
|
kdb_port_info.port = ser->port;
|
|
kdb_port_info.flags = ser->flags;
|
|
kdb_port_info.iomem_base = ser->iomem_base;
|
|
kdb_port_info.iomem_reg_shift = ser->iomem_reg_shift;
|
|
kdb_port_info.MCR = UART_MCR_DTR | UART_MCR_RTS;
|
|
|
|
/*
|
|
* Clear all interrupts
|
|
*/
|
|
serial_in(&kdb_port_info, UART_LSR);
|
|
serial_in(&kdb_port_info, UART_RX);
|
|
serial_in(&kdb_port_info, UART_IIR);
|
|
serial_in(&kdb_port_info, UART_MSR);
|
|
|
|
/*
|
|
* Now, initialize the UART
|
|
*/
|
|
serial_out(&kdb_port_info, UART_LCR, UART_LCR_WLEN8); /* reset DLAB */
|
|
serial_out(&kdb_port_info, UART_MCR, kdb_port_info.MCR);
|
|
|
|
/*
|
|
* and set the speed of the serial port
|
|
* (currently hardwired to 115200 8N1
|
|
*/
|
|
|
|
/* baud rate is fixed to 115200 (is this sufficient?)*/
|
|
t = kdb_port_info.state->baud_base / 115200;
|
|
/* set DLAB */
|
|
serial_out(&kdb_port_info, UART_LCR, UART_LCR_WLEN8 | UART_LCR_DLAB);
|
|
serial_out(&kdb_port_info, UART_DLL, t & 0xff);/* LS of divisor */
|
|
serial_out(&kdb_port_info, UART_DLM, t >> 8); /* MS of divisor */
|
|
/* reset DLAB */
|
|
serial_out(&kdb_port_info, UART_LCR, UART_LCR_WLEN8);
|
|
}
|
|
|
|
int putDebugChar(char c)
|
|
{
|
|
|
|
if (!kdb_port_info.state) { /* need to init device first */
|
|
return 0;
|
|
}
|
|
|
|
while ((serial_in(&kdb_port_info, UART_LSR) & UART_LSR_THRE) == 0)
|
|
;
|
|
|
|
serial_out(&kdb_port_info, UART_TX, c);
|
|
|
|
return 1;
|
|
}
|
|
|
|
char getDebugChar(void)
|
|
{
|
|
if (!kdb_port_info.state) { /* need to init device first */
|
|
return 0;
|
|
}
|
|
|
|
while (!(serial_in(&kdb_port_info, UART_LSR) & 1))
|
|
;
|
|
|
|
return(serial_in(&kdb_port_info, UART_RX));
|
|
}
|