[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, 0 insertions, 263 deletions

diff --git a/arch/mips/pmc-sierra/msp71xx/msp_serial.c b/arch/mips/pmc-sierra/msp71xx/msp_serial.c
index 9de34302e5f..f7261628d8a 100644
--- a/arch/mips/pmc-sierra/msp71xx/msp_serial.c
+++ b/arch/mips/pmc-sierra/msp71xx/msp_serial.c
@@ -38,68 +38,6 @@
 #include <msp_int.h>
 #include <msp_regs.h>
 
-#ifdef CONFIG_KGDB
-/*
- * kgdb uses serial port 1 so the console can remain on port 0.
- * To use port 0 change the definition to read as follows:
- * #define DEBUG_PORT_BASE KSEG1ADDR(MSP_UART0_BASE)
- */
-#define DEBUG_PORT_BASE KSEG1ADDR(MSP_UART1_BASE)
-
-int putDebugChar(char c)
-{
-	volatile uint32_t *uart = (volatile uint32_t *)DEBUG_PORT_BASE;
-	uint32_t val = (uint32_t)c;
-
-	local_irq_disable();
-	while( !(uart[5] & 0x20) ); /* Wait for TXRDY */
-	uart[0] = val;
-	while( !(uart[5] & 0x20) ); /* Wait for TXRDY */
-	local_irq_enable();
-
-	return 1;
-}
-
-char getDebugChar(void)
-{
-	volatile uint32_t *uart = (volatile uint32_t *)DEBUG_PORT_BASE;
-	uint32_t val;
-
-	while( !(uart[5] & 0x01) ); /* Wait for RXRDY */
-	val = uart[0];
-
-	return (char)val;
-}
-
-void initDebugPort(unsigned int uartclk, unsigned int baudrate)
-{
-	unsigned int baud_divisor = (uartclk + 8 * baudrate)/(16 * baudrate);
-
-	/* Enable FIFOs */
-	writeb(UART_FCR_ENABLE_FIFO | UART_FCR_CLEAR_RCVR |
-			UART_FCR_CLEAR_XMIT | UART_FCR_TRIGGER_4,
-		(char *)DEBUG_PORT_BASE + (UART_FCR * 4));
-
-	/* Select brtc divisor */
-	writeb(UART_LCR_DLAB, (char *)DEBUG_PORT_BASE + (UART_LCR * 4));
-
-	/* Store divisor lsb */
-	writeb(baud_divisor, (char *)DEBUG_PORT_BASE + (UART_TX * 4));
-
-	/* Store divisor msb */
-	writeb(baud_divisor >> 8, (char *)DEBUG_PORT_BASE + (UART_IER * 4));
-
-	/* Set 8N1 mode */
-	writeb(UART_LCR_WLEN8, (char *)DEBUG_PORT_BASE + (UART_LCR * 4));
-
-	/* Disable flow control */
-	writeb(0, (char *)DEBUG_PORT_BASE + (UART_MCR * 4));
-
-	/* Disable receive interrupt(!) */
-	writeb(0, (char *)DEBUG_PORT_BASE + (UART_IER * 4));
-}
-#endif
-
 void __init msp_serial_setup(void)
 {
 	char    *s;
@@ -139,17 +77,6 @@ void __init msp_serial_setup(void)
 		case MACH_MSP7120_FPGA:
 			/* Enable UART1 on MSP4200 and MSP7120 */
 			*GPIO_CFG2_REG = 0x00002299;
-
-#ifdef CONFIG_KGDB
-			/* Initialize UART1 for kgdb since PMON doesn't */
-			if( DEBUG_PORT_BASE == KSEG1ADDR(MSP_UART1_BASE) ) {
-				if( mips_machtype == MACH_MSP4200_FPGA
-				 || mips_machtype == MACH_MSP7120_FPGA )
-					initDebugPort(uartclk, 19200);
-				else
-					initDebugPort(uartclk, 57600);
-			}
-#endif
 			break;
 
 		default:
diff --git a/arch/mips/pmc-sierra/yosemite/Makefile b/arch/mips/pmc-sierra/yosemite/Makefile
index 8fd9a04e353..b16f95c3df6 100644
--- a/arch/mips/pmc-sierra/yosemite/Makefile
+++ b/arch/mips/pmc-sierra/yosemite/Makefile
@@ -4,7 +4,6 @@
 
 obj-y    += irq.o prom.o py-console.o setup.o
 
-obj-$(CONFIG_KGDB)		+= dbg_io.o
 obj-$(CONFIG_SMP)		+= smp.o
 
 EXTRA_CFLAGS += -Werror
diff --git a/arch/mips/pmc-sierra/yosemite/dbg_io.c b/arch/mips/pmc-sierra/yosemite/dbg_io.c
deleted file mode 100644
index 6362c702e38..00000000000
--- a/arch/mips/pmc-sierra/yosemite/dbg_io.c
+++ /dev/null
@@ -1,180 +0,0 @@
-/*
- * Copyright 2003 PMC-Sierra
- * Author: Manish Lachwani (lachwani@pmc-sierra.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.
- */
-
-/*
- * Support for KGDB for the Yosemite board. We make use of single serial
- * port to be used for KGDB as well as console. The second serial port
- * seems to be having a problem. Single IRQ is allocated for both the
- * ports. Hence, the interrupt routing code needs to figure out whether
- * the interrupt came from channel A or B.
- */
-
-#include <asm/serial.h>
-
-/*
- * Baud rate, Parity, Data and Stop bit settings for the
- * serial port on the Yosemite. Note that the Early printk
- * patch has been added. So, we should be all set to go
- */
-#define	YOSEMITE_BAUD_2400	2400
-#define	YOSEMITE_BAUD_4800	4800
-#define	YOSEMITE_BAUD_9600	9600
-#define	YOSEMITE_BAUD_19200	19200
-#define	YOSEMITE_BAUD_38400	38400
-#define	YOSEMITE_BAUD_57600	57600
-#define	YOSEMITE_BAUD_115200	115200
-
-#define	YOSEMITE_PARITY_NONE	0
-#define	YOSEMITE_PARITY_ODD	0x08
-#define	YOSEMITE_PARITY_EVEN	0x18
-#define	YOSEMITE_PARITY_MARK	0x28
-#define	YOSEMITE_PARITY_SPACE	0x38
-
-#define	YOSEMITE_DATA_5BIT	0x0
-#define	YOSEMITE_DATA_6BIT	0x1
-#define	YOSEMITE_DATA_7BIT	0x2
-#define	YOSEMITE_DATA_8BIT	0x3
-
-#define	YOSEMITE_STOP_1BIT	0x0
-#define	YOSEMITE_STOP_2BIT	0x4
-
-/* This is crucial */
-#define	SERIAL_REG_OFS		0x1
-
-#define	SERIAL_RCV_BUFFER	0x0
-#define	SERIAL_TRANS_HOLD	0x0
-#define	SERIAL_SEND_BUFFER	0x0
-#define	SERIAL_INTR_ENABLE	(1 * SERIAL_REG_OFS)
-#define	SERIAL_INTR_ID		(2 * SERIAL_REG_OFS)
-#define	SERIAL_DATA_FORMAT	(3 * SERIAL_REG_OFS)
-#define	SERIAL_LINE_CONTROL	(3 * SERIAL_REG_OFS)
-#define	SERIAL_MODEM_CONTROL	(4 * SERIAL_REG_OFS)
-#define	SERIAL_RS232_OUTPUT	(4 * SERIAL_REG_OFS)
-#define	SERIAL_LINE_STATUS	(5 * SERIAL_REG_OFS)
-#define	SERIAL_MODEM_STATUS	(6 * SERIAL_REG_OFS)
-#define	SERIAL_RS232_INPUT	(6 * SERIAL_REG_OFS)
-#define	SERIAL_SCRATCH_PAD	(7 * SERIAL_REG_OFS)
-
-#define	SERIAL_DIVISOR_LSB	(0 * SERIAL_REG_OFS)
-#define	SERIAL_DIVISOR_MSB	(1 * SERIAL_REG_OFS)
-
-/*
- * Functions to READ and WRITE to serial port 0
- */
-#define	SERIAL_READ(ofs)		(*((volatile unsigned char*)	\
-					(TITAN_SERIAL_BASE + ofs)))
-
-#define	SERIAL_WRITE(ofs, val)		((*((volatile unsigned char*)	\
-					(TITAN_SERIAL_BASE + ofs))) = val)
-
-/*
- * Functions to READ and WRITE to serial port 1
- */
-#define	SERIAL_READ_1(ofs)		(*((volatile unsigned char*)	\
-					(TITAN_SERIAL_BASE_1 + ofs)))
-
-#define	SERIAL_WRITE_1(ofs, val)	((*((volatile unsigned char*)	\
-					(TITAN_SERIAL_BASE_1 + ofs))) = val)
-
-/*
- * Second serial port initialization
- */
-void init_second_port(void)
-{
-	/* Disable Interrupts */
-	SERIAL_WRITE_1(SERIAL_LINE_CONTROL, 0x0);
-	SERIAL_WRITE_1(SERIAL_INTR_ENABLE, 0x0);
-
-	{
-		unsigned int divisor;
-
-		SERIAL_WRITE_1(SERIAL_LINE_CONTROL, 0x80);
-		divisor = TITAN_SERIAL_BASE_BAUD / YOSEMITE_BAUD_115200;
-		SERIAL_WRITE_1(SERIAL_DIVISOR_LSB, divisor & 0xff);
-
-		SERIAL_WRITE_1(SERIAL_DIVISOR_MSB,
-			       (divisor & 0xff00) >> 8);
-		SERIAL_WRITE_1(SERIAL_LINE_CONTROL, 0x0);
-	}
-
-	SERIAL_WRITE_1(SERIAL_DATA_FORMAT, YOSEMITE_DATA_8BIT |
-		       YOSEMITE_PARITY_NONE | YOSEMITE_STOP_1BIT);
-
-	/* Enable Interrupts */
-	SERIAL_WRITE_1(SERIAL_INTR_ENABLE, 0xf);
-}
-
-/* Initialize the serial port for KGDB debugging */
-void debugInit(unsigned int baud, unsigned char data, unsigned char parity,
-	       unsigned char stop)
-{
-	/* Disable Interrupts */
-	SERIAL_WRITE(SERIAL_LINE_CONTROL, 0x0);
-	SERIAL_WRITE(SERIAL_INTR_ENABLE, 0x0);
-
-	{
-		unsigned int divisor;
-
-		SERIAL_WRITE(SERIAL_LINE_CONTROL, 0x80);
-
-		divisor = TITAN_SERIAL_BASE_BAUD / baud;
-		SERIAL_WRITE(SERIAL_DIVISOR_LSB, divisor & 0xff);
-
-		SERIAL_WRITE(SERIAL_DIVISOR_MSB, (divisor & 0xff00) >> 8);
-		SERIAL_WRITE(SERIAL_LINE_CONTROL, 0x0);
-	}
-
-	SERIAL_WRITE(SERIAL_DATA_FORMAT, data | parity | stop);
-}
-
-static int remoteDebugInitialized = 0;
-
-unsigned char getDebugChar(void)
-{
-	if (!remoteDebugInitialized) {
-		remoteDebugInitialized = 1;
-		debugInit(YOSEMITE_BAUD_115200,
-			  YOSEMITE_DATA_8BIT,
-			  YOSEMITE_PARITY_NONE, YOSEMITE_STOP_1BIT);
-	}
-
-	while ((SERIAL_READ(SERIAL_LINE_STATUS) & 0x1) == 0);
-	return SERIAL_READ(SERIAL_RCV_BUFFER);
-}
-
-int putDebugChar(unsigned char byte)
-{
-	if (!remoteDebugInitialized) {
-		remoteDebugInitialized = 1;
-		debugInit(YOSEMITE_BAUD_115200,
-			  YOSEMITE_DATA_8BIT,
-			  YOSEMITE_PARITY_NONE, YOSEMITE_STOP_1BIT);
-	}
-
-	while ((SERIAL_READ(SERIAL_LINE_STATUS) & 0x20) == 0);
-	SERIAL_WRITE(SERIAL_SEND_BUFFER, byte);
-
-	return 1;
-}
diff --git a/arch/mips/pmc-sierra/yosemite/irq.c b/arch/mips/pmc-sierra/yosemite/irq.c
index 4decc280786..5f673eba142 100644
--- a/arch/mips/pmc-sierra/yosemite/irq.c
+++ b/arch/mips/pmc-sierra/yosemite/irq.c
@@ -141,10 +141,6 @@ asmlinkage void plat_irq_dispatch(void)
 	}
 }
 
-#ifdef CONFIG_KGDB
-extern void init_second_port(void);
-#endif
-
 /*
  * Initialize the next level interrupt handler
  */
@@ -156,11 +152,6 @@ void __init arch_init_irq(void)
 	rm7k_cpu_irq_init();
 	rm9k_cpu_irq_init();
 
-#ifdef CONFIG_KGDB
-	/* At this point, initialize the second serial port */
-	init_second_port();
-#endif
-
 #ifdef CONFIG_GDB_CONSOLE
 	register_gdb_console();
 #endif