mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-09-19 10:58:59 +03:00
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
/*
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* Copyright 2004, Broadcom Corporation
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* All Rights Reserved.
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*
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* THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
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* KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
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* SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
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*
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* Carsten Langgaard, carstenl@mips.com
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* Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved.
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*
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* ########################################################################
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*
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* This program is free software; you can distribute it and/or modify it
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* under the terms of the GNU General Public License (Version 2) as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
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*
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* ########################################################################
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*
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* This is the interface to the remote debugger stub.
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*
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*/
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#include <linux/serialP.h>
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#include <linux/serial_reg.h>
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#include <asm/serial.h>
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#include <asm/io.h>
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static struct async_struct kdb_port_info = {0};
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static __inline__ unsigned int serial_in(struct async_struct *info, int offset)
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{
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return readb((unsigned long) info->iomem_base +
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(offset<<info->iomem_reg_shift));
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}
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static __inline__ void serial_out(struct async_struct *info, int offset,
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int value)
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{
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writeb(value, (unsigned long) info->iomem_base +
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(offset<<info->iomem_reg_shift));
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}
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void rs_kgdb_hook(struct serial_state *ser) {
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int t;
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kdb_port_info.state = ser;
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kdb_port_info.magic = SERIAL_MAGIC;
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kdb_port_info.port = ser->port;
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kdb_port_info.flags = ser->flags;
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kdb_port_info.iomem_base = ser->iomem_base;
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kdb_port_info.iomem_reg_shift = ser->iomem_reg_shift;
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kdb_port_info.MCR = UART_MCR_DTR | UART_MCR_RTS;
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/*
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* Clear all interrupts
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*/
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serial_in(&kdb_port_info, UART_LSR);
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serial_in(&kdb_port_info, UART_RX);
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serial_in(&kdb_port_info, UART_IIR);
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serial_in(&kdb_port_info, UART_MSR);
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/*
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* Now, initialize the UART
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*/
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serial_out(&kdb_port_info, UART_LCR, UART_LCR_WLEN8); /* reset DLAB */
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serial_out(&kdb_port_info, UART_MCR, kdb_port_info.MCR);
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/*
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* and set the speed of the serial port
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* (currently hardwired to 115200 8N1
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*/
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/* baud rate is fixed to 115200 (is this sufficient?)*/
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t = kdb_port_info.state->baud_base / 115200;
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/* set DLAB */
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serial_out(&kdb_port_info, UART_LCR, UART_LCR_WLEN8 | UART_LCR_DLAB);
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serial_out(&kdb_port_info, UART_DLL, t & 0xff);/* LS of divisor */
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serial_out(&kdb_port_info, UART_DLM, t >> 8); /* MS of divisor */
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/* reset DLAB */
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serial_out(&kdb_port_info, UART_LCR, UART_LCR_WLEN8);
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}
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int putDebugChar(char c)
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{
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if (!kdb_port_info.state) { /* need to init device first */
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return 0;
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}
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while ((serial_in(&kdb_port_info, UART_LSR) & UART_LSR_THRE) == 0)
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;
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serial_out(&kdb_port_info, UART_TX, c);
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return 1;
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}
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char getDebugChar(void)
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{
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if (!kdb_port_info.state) { /* need to init device first */
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return 0;
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}
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while (!(serial_in(&kdb_port_info, UART_LSR) & 1))
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;
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return(serial_in(&kdb_port_info, UART_RX));
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}
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