[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>

5 files changed, 0 insertions, 124 deletions

diff --git a/arch/mips/nxp/pnx8550/common/Makefile b/arch/mips/nxp/pnx8550/common/Makefile
index 31cc1a5cec3b..dd9e7b1f7fd3 100644
--- a/arch/mips/nxp/pnx8550/common/Makefile
+++ b/arch/mips/nxp/pnx8550/common/Makefile
@@ -24,6 +24,5 @@
 
 obj-y := setup.o prom.o int.o reset.o time.o proc.o platform.o
 obj-$(CONFIG_PCI) += pci.o
-obj-$(CONFIG_KGDB) += gdb_hook.o
 
 EXTRA_CFLAGS += -Werror
diff --git a/arch/mips/nxp/pnx8550/common/gdb_hook.c b/arch/mips/nxp/pnx8550/common/gdb_hook.c
deleted file mode 100644
index ad4624f6d9bc..000000000000
--- a/arch/mips/nxp/pnx8550/common/gdb_hook.c
+++ /dev/null
@@ -1,109 +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 <linux/serial_ip3106.h>
-
-#include <asm/serial.h>
-#include <asm/io.h>
-
-#include <uart.h>
-
-static struct serial_state rs_table[IP3106_NR_PORTS] = {
-};
-static struct async_struct kdb_port_info = {0};
-
-void rs_kgdb_hook(int tty_no)
-{
-        struct serial_state *ser = &rs_table[tty_no];
-
-        kdb_port_info.state = ser;
-        kdb_port_info.magic = SERIAL_MAGIC;
-        kdb_port_info.port  = tty_no;
-        kdb_port_info.flags = ser->flags;
-
-        /*
-         * Clear all interrupts
-         */
-        /* Clear all the transmitter FIFO counters (pointer and status) */
-        ip3106_lcr(UART_BASE, tty_no) |= IP3106_UART_LCR_TX_RST;
-        /* Clear all the receiver FIFO counters (pointer and status) */
-        ip3106_lcr(UART_BASE, tty_no) |= IP3106_UART_LCR_RX_RST;
-        /* Clear all interrupts */
-        ip3106_iclr(UART_BASE, tty_no) = IP3106_UART_INT_ALLRX |
-                IP3106_UART_INT_ALLTX;
-
-        /*
-         * Now, initialize the UART
-         */
-        ip3106_lcr(UART_BASE, tty_no) = IP3106_UART_LCR_8BIT;
-        ip3106_baud(UART_BASE, tty_no) = 5; // 38400 Baud
-}
-
-int putDebugChar(char c)
-{
-        /* Wait until FIFO not full */
-        while (((ip3106_fifo(UART_BASE, kdb_port_info.port) & IP3106_UART_FIFO_TXFIFO) >> 16) >= 16)
-                ;
-        /* Send one char */
-        ip3106_fifo(UART_BASE, kdb_port_info.port) = c;
-
-        return 1;
-}
-
-char getDebugChar(void)
-{
-        char ch;
-
-        /* Wait until there is a char in the FIFO */
-        while (!((ip3106_fifo(UART_BASE, kdb_port_info.port) &
-                                        IP3106_UART_FIFO_RXFIFO) >> 8))
-                ;
-        /* Read one char */
-        ch = ip3106_fifo(UART_BASE, kdb_port_info.port) &
-                IP3106_UART_FIFO_RBRTHR;
-        /* Advance the RX FIFO read pointer */
-        ip3106_lcr(UART_BASE, kdb_port_info.port) |= IP3106_UART_LCR_RX_NEXT;
-        return (ch);
-}
-
-void rs_disable_debug_interrupts(void)
-{
-        ip3106_ien(UART_BASE, kdb_port_info.port) = 0; /* Disable all interrupts */
-}
-
-void rs_enable_debug_interrupts(void)
-{
-        /* Clear all the transmitter FIFO counters (pointer and status) */
-        ip3106_lcr(UART_BASE, kdb_port_info.port) |= IP3106_UART_LCR_TX_RST;
-        /* Clear all the receiver FIFO counters (pointer and status) */
-        ip3106_lcr(UART_BASE, kdb_port_info.port) |= IP3106_UART_LCR_RX_RST;
-        /* Clear all interrupts */
-        ip3106_iclr(UART_BASE, kdb_port_info.port) = IP3106_UART_INT_ALLRX |
-                IP3106_UART_INT_ALLTX;
-        ip3106_ien(UART_BASE, kdb_port_info.port)  = IP3106_UART_INT_ALLRX; /* Enable RX interrupts */
-}
diff --git a/arch/mips/nxp/pnx8550/common/int.c b/arch/mips/nxp/pnx8550/common/int.c
index aad03429a5e3..f080f114a1bf 100644
--- a/arch/mips/nxp/pnx8550/common/int.c
+++ b/arch/mips/nxp/pnx8550/common/int.c
@@ -34,7 +34,6 @@
 #include <linux/module.h>
 
 #include <asm/io.h>
-#include <asm/gdb-stub.h>
 #include <int.h>
 #include <uart.h>
 
diff --git a/arch/mips/nxp/pnx8550/common/proc.c b/arch/mips/nxp/pnx8550/common/proc.c
index 18b125e3b65d..acf1fa889444 100644
--- a/arch/mips/nxp/pnx8550/common/proc.c
+++ b/arch/mips/nxp/pnx8550/common/proc.c
@@ -22,7 +22,6 @@
 #include <linux/random.h>
 
 #include <asm/io.h>
-#include <asm/gdb-stub.h>
 #include <int.h>
 #include <uart.h>
 
diff --git a/arch/mips/nxp/pnx8550/common/setup.c b/arch/mips/nxp/pnx8550/common/setup.c
index 92d764c97701..2aed50fef10f 100644
--- a/arch/mips/nxp/pnx8550/common/setup.c
+++ b/arch/mips/nxp/pnx8550/common/setup.c
@@ -47,7 +47,6 @@ extern void pnx8550_machine_halt(void);
 extern void pnx8550_machine_power_off(void);
 extern struct resource ioport_resource;
 extern struct resource iomem_resource;
-extern void rs_kgdb_hook(int tty_no);
 extern char *prom_getcmdline(void);
 
 struct resource standard_io_resources[] = {
@@ -142,16 +141,5 @@ void __init plat_mem_setup(void)
                 ip3106_baud(UART_BASE, pnx8550_console_port) = 5;
         }
 
-#ifdef CONFIG_KGDB
-        argptr = prom_getcmdline();
-        if ((argptr = strstr(argptr, "kgdb=ttyS")) != NULL) {
-                int line;
-                argptr += strlen("kgdb=ttyS");
-                line = *argptr == '0' ? 0 : 1;
-                rs_kgdb_hook(line);
-                pr_info("KGDB: Using ttyS%i for session, "
-                        "please connect your debugger\n", line ? 1 : 0);
-        }
-#endif
         return;
 }