1 files changed, 120 insertions, 0 deletions
diff --git a/package/linux/kernel-source/arch/mips/brcm-boards/generic/gdb_hook.c b/package/linux/kernel-source/arch/mips/brcm-boards/generic/gdb_hook.c
new file mode 100644
index 000000000..1345289bb
--- /dev/null
+++ b/package/linux/kernel-source/arch/mips/brcm-boards/generic/gdb_hook.c
@@ -0,0 +1,120 @@
+/*
+ * 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));
+}