[MIPS] kgdb: Remove existing implementation

This patch explicitly removes the kgdb implementation, for mips which
is intended to be followed by a patch that adds a kgdb implementation
for MIPS that makes use of the kgdb core in the kernel.

Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

4 files changed, 2 insertions, 131 deletions

diff --git a/arch/mips/basler/excite/Makefile b/arch/mips/basler/excite/Makefile
index 519142c2e4e..cff29cf46d0 100644
--- a/arch/mips/basler/excite/Makefile
+++ b/arch/mips/basler/excite/Makefile
@@ -5,5 +5,4 @@
 obj-$(CONFIG_BASLER_EXCITE)	+= excite_irq.o excite_prom.o excite_setup.o \
 				   excite_device.o excite_procfs.o
 
-obj-$(CONFIG_KGDB)		+= excite_dbg_io.o
 obj-m				+= excite_iodev.o
diff --git a/arch/mips/basler/excite/excite_dbg_io.c b/arch/mips/basler/excite/excite_dbg_io.c
deleted file mode 100644
index d289e3a868c..00000000000
--- a/arch/mips/basler/excite/excite_dbg_io.c
+++ /dev/null
@@ -1,121 +0,0 @@
-/*
- *  Copyright (C) 2004 by Basler Vision Technologies AG
- *  Author: Thomas Koeller <thomas.koeller@baslerweb.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 program is distributed in the hope that 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
- */
-
-#include <linux/linkage.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <asm/gdb-stub.h>
-#include <asm/rm9k-ocd.h>
-#include <excite.h>
-
-#if defined(CONFIG_SERIAL_8250) && CONFIG_SERIAL_8250_NR_UARTS > 1
-#error Debug port used by serial driver
-#endif
-
-#define UART_CLK		25000000
-#define BASE_BAUD		(UART_CLK / 16)
-#define REGISTER_BASE_0		0x0208UL
-#define REGISTER_BASE_1		0x0238UL
-
-#define REGISTER_BASE_DBG	REGISTER_BASE_1
-
-#define CPRR	0x0004
-#define UACFG	0x0200
-#define UAINTS	0x0204
-#define UARBR	(REGISTER_BASE_DBG + 0x0000)
-#define UATHR	(REGISTER_BASE_DBG + 0x0004)
-#define UADLL	(REGISTER_BASE_DBG + 0x0008)
-#define UAIER	(REGISTER_BASE_DBG + 0x000c)
-#define UADLH	(REGISTER_BASE_DBG + 0x0010)
-#define UAIIR	(REGISTER_BASE_DBG + 0x0014)
-#define UAFCR	(REGISTER_BASE_DBG + 0x0018)
-#define UALCR	(REGISTER_BASE_DBG + 0x001c)
-#define UAMCR	(REGISTER_BASE_DBG + 0x0020)
-#define UALSR	(REGISTER_BASE_DBG + 0x0024)
-#define UAMSR	(REGISTER_BASE_DBG + 0x0028)
-#define UASCR	(REGISTER_BASE_DBG + 0x002c)
-
-#define	PARITY_NONE	0
-#define	PARITY_ODD	0x08
-#define	PARITY_EVEN	0x18
-#define	PARITY_MARK	0x28
-#define	PARITY_SPACE	0x38
-
-#define	DATA_5BIT	0x0
-#define	DATA_6BIT	0x1
-#define	DATA_7BIT	0x2
-#define	DATA_8BIT	0x3
-
-#define	STOP_1BIT	0x0
-#define	STOP_2BIT	0x4
-
-#define BAUD_DBG	57600
-#define	PARITY_DBG	PARITY_NONE
-#define	DATA_DBG	DATA_8BIT
-#define	STOP_DBG	STOP_1BIT
-
-/* Initialize the serial port for KGDB debugging */
-void __init excite_kgdb_init(void)
-{
-	const u32 divisor = BASE_BAUD / BAUD_DBG;
-
-	/* Take the UART out of reset */
-	titan_writel(0x00ff1cff, CPRR);
-	titan_writel(0x00000000, UACFG);
-	titan_writel(0x00000002, UACFG);
-
-	titan_writel(0x0, UALCR);
-	titan_writel(0x0, UAIER);
-
-	/* Disable FIFOs */
-	titan_writel(0x00, UAFCR);
-
-	titan_writel(0x80, UALCR);
-	titan_writel(divisor & 0xff, UADLL);
-	titan_writel((divisor & 0xff00) >> 8, UADLH);
-	titan_writel(0x0, UALCR);
-
-	titan_writel(DATA_DBG | PARITY_DBG | STOP_DBG, UALCR);
-
-	/* Enable receiver interrupt */
-	titan_readl(UARBR);
-	titan_writel(0x1, UAIER);
-}
-
-int getDebugChar(void)
-{
-	while (!(titan_readl(UALSR) & 0x1));
-	return titan_readl(UARBR);
-}
-
-int putDebugChar(int data)
-{
-	while (!(titan_readl(UALSR) & 0x20));
-	titan_writel(data, UATHR);
-	return 1;
-}
-
-/* KGDB interrupt handler */
-asmlinkage void excite_kgdb_inthdl(void)
-{
-	if (unlikely(
-		((titan_readl(UAIIR) & 0x7) == 4)
-		&& ((titan_readl(UARBR) & 0xff) == 0x3)))
-			set_async_breakpoint(&regs->cp0_epc);
-}
diff --git a/arch/mips/basler/excite/excite_irq.c b/arch/mips/basler/excite/excite_irq.c
index 4903e067916..934e0a6b101 100644
--- a/arch/mips/basler/excite/excite_irq.c
+++ b/arch/mips/basler/excite/excite_irq.c
@@ -50,10 +50,6 @@ void __init arch_init_irq(void)
 	mips_cpu_irq_init();
 	rm7k_cpu_irq_init();
 	rm9k_cpu_irq_init();
-
-#ifdef CONFIG_KGDB
-	excite_kgdb_init();
-#endif
 }
 
 asmlinkage void plat_irq_dispatch(void)
@@ -90,9 +86,6 @@ asmlinkage void plat_irq_dispatch(void)
 	msgint	    = msgintflags & msgintmask & (0x1 << (TITAN_MSGINT % 0x20));
 	if ((pending & (1 << TITAN_IRQ)) && msgint) {
 		ocd_writel(msgint, INTP0Clear0 + (TITAN_MSGINT / 0x20 * 0x10));
-#if defined(CONFIG_KGDB)
-		excite_kgdb_inthdl();
-#endif
 		do_IRQ(TITAN_IRQ);
 		return;
 	}
diff --git a/arch/mips/basler/excite/excite_setup.c b/arch/mips/basler/excite/excite_setup.c
index 6dd8f0d46d0..d66b3b8edf2 100644
--- a/arch/mips/basler/excite/excite_setup.c
+++ b/arch/mips/basler/excite/excite_setup.c
@@ -95,13 +95,13 @@ static int __init excite_init_console(void)
 	/* Take the DUART out of reset */
 	titan_writel(0x00ff1cff, CPRR);
 
-#if defined(CONFIG_KGDB) || (CONFIG_SERIAL_8250_NR_UARTS > 1)
+#if (CONFIG_SERIAL_8250_NR_UARTS > 1)
 	/* Enable both ports */
 	titan_writel(MASK_SER0 | MASK_SER1, UACFG);
 #else
 	/* Enable port #0 only */
 	titan_writel(MASK_SER0, UACFG);
-#endif	/* defined(CONFIG_KGDB) */
+#endif
 
  	/*
 	 * Set up serial port #0. Do not use autodetection; the result is