[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, 192 deletions

diff --git a/arch/mips/mti-malta/Makefile b/arch/mips/mti-malta/Makefile
index f8064446e812..3b7dd722c32a 100644
--- a/arch/mips/mti-malta/Makefile
+++ b/arch/mips/mti-malta/Makefile
@@ -13,7 +13,6 @@ obj-y				:= malta-amon.o malta-cmdline.o \
 
 obj-$(CONFIG_EARLY_PRINTK)      += malta-console.o
 obj-$(CONFIG_PCI)               += malta-pci.o
-obj-$(CONFIG_KGDB)              += malta-kgdb.o
 
 # FIXME FIXME FIXME
 obj-$(CONFIG_MIPS_MT_SMTC)      += malta_smtc.o
diff --git a/arch/mips/mti-malta/malta-init.c b/arch/mips/mti-malta/malta-init.c
index c0653021a171..4832af251668 100644
--- a/arch/mips/mti-malta/malta-init.c
+++ b/arch/mips/mti-malta/malta-init.c
@@ -37,15 +37,6 @@
 
 #include <asm/mips-boards/malta.h>
 
-#ifdef CONFIG_KGDB
-extern int rs_kgdb_hook(int, int);
-extern int rs_putDebugChar(char);
-extern char rs_getDebugChar(void);
-extern int saa9730_kgdb_hook(int);
-extern int saa9730_putDebugChar(char);
-extern char saa9730_getDebugChar(void);
-#endif
-
 int prom_argc;
 int *_prom_argv, *_prom_envp;
 
@@ -173,51 +164,6 @@ static void __init console_config(void)
 }
 #endif
 
-#ifdef CONFIG_KGDB
-void __init kgdb_config(void)
-{
-        extern int (*generic_putDebugChar)(char);
-        extern char (*generic_getDebugChar)(void);
-        char *argptr;
-        int line, speed;
-
-        argptr = prom_getcmdline();
-        if ((argptr = strstr(argptr, "kgdb=ttyS")) != NULL) {
-                argptr += strlen("kgdb=ttyS");
-                if (*argptr != '0' && *argptr != '1')
-                        printk("KGDB: Unknown serial line /dev/ttyS%c, "
-                               "falling back to /dev/ttyS1\n", *argptr);
-                line = *argptr == '0' ? 0 : 1;
-                printk("KGDB: Using serial line /dev/ttyS%d for session\n", line);
-
-                speed = 0;
-                if (*++argptr == ',')
-                {
-                        int c;
-                        while ((c = *++argptr) && ('0' <= c && c <= '9'))
-                                speed = speed * 10 + c - '0';
-                }
-                {
-                        speed = rs_kgdb_hook(line, speed);
-                        generic_putDebugChar = rs_putDebugChar;
-                        generic_getDebugChar = rs_getDebugChar;
-                }
-
-                pr_info("KGDB: Using serial line /dev/ttyS%d at %d for "
-                        "session, please connect your debugger\n",
-                        line ? 1 : 0, speed);
-
-                {
-                        char *s;
-                        for (s = "Please connect GDB to this port\r\n"; *s; )
-                                generic_putDebugChar(*s++);
-                }
-
-                /* Breakpoint is invoked after interrupts are initialised */
-        }
-}
-#endif
-
 static void __init mips_nmi_setup(void)
 {
         void *base;
diff --git a/arch/mips/mti-malta/malta-kgdb.c b/arch/mips/mti-malta/malta-kgdb.c
deleted file mode 100644
index 6a1854de4579..000000000000
--- a/arch/mips/mti-malta/malta-kgdb.c
+++ /dev/null
@@ -1,133 +0,0 @@
-/*
- * 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/types.h>
-#include <linux/serial.h>
-#include <linux/serialP.h>
-#include <linux/serial_reg.h>
-
-#include <asm/serial.h>
-#include <asm/io.h>
-
-static struct serial_state rs_table[] = {
-        SERIAL_PORT_DFNS        /* Defined in serial.h */
-};
-
-static struct async_struct kdb_port_info = {0};
-
-int (*generic_putDebugChar)(char);
-char (*generic_getDebugChar)(void);
-
-static __inline__ unsigned int serial_in(struct async_struct *info, int offset)
-{
-        return inb(info->port + offset);
-}
-
-static __inline__ void serial_out(struct async_struct *info, int offset,
-                                int value)
-{
-        outb(value, info->port+offset);
-}
-
-int rs_kgdb_hook(int tty_no, int speed) {
-        int t;
-        struct serial_state *ser = &rs_table[tty_no];
-
-        kdb_port_info.state = ser;
-        kdb_port_info.magic = SERIAL_MAGIC;
-        kdb_port_info.port = ser->port;
-        kdb_port_info.flags = ser->flags;
-
-        /*
-         * 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 */
-        if (kdb_port_info.flags & ASYNC_FOURPORT) {
-                kdb_port_info.MCR = UART_MCR_DTR | UART_MCR_RTS;
-                t = UART_MCR_DTR | UART_MCR_OUT1;
-        } else {
-                kdb_port_info.MCR
-                        = UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2;
-                t = UART_MCR_DTR | UART_MCR_RTS;
-        }
-
-        kdb_port_info.MCR = t;          /* no interrupts, please */
-        serial_out(&kdb_port_info, UART_MCR, kdb_port_info.MCR);
-
-        /*
-         * and set the speed of the serial port
-         */
-        if (speed == 0)
-                speed = 9600;
-
-        t = kdb_port_info.state->baud_base / speed;
-        /* 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);
-
-        return speed;
-}
-
-int putDebugChar(char c)
-{
-        return generic_putDebugChar(c);
-}
-
-char getDebugChar(void)
-{
-        return generic_getDebugChar();
-}
-
-int rs_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 rs_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);
-}
diff --git a/arch/mips/mti-malta/malta-setup.c b/arch/mips/mti-malta/malta-setup.c
index e7cad54936ca..dc78b8983eeb 100644
--- a/arch/mips/mti-malta/malta-setup.c
+++ b/arch/mips/mti-malta/malta-setup.c
@@ -199,10 +199,6 @@ void __init plat_mem_setup(void)
          */
         enable_dma(4);
 
-#ifdef CONFIG_KGDB
-        kgdb_config();
-#endif
-
 #ifdef CONFIG_DMA_COHERENT
         if (mips_revision_sconid != MIPS_REVISION_SCON_BONITO)
                 panic("Hardware DMA cache coherency not supported");