[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>

1 files changed, 0 insertions, 60 deletions

diff --git a/arch/mips/sibyte/sb1250/irq.c b/arch/mips/sibyte/sb1250/irq.c
index eac9065ffe0c..a5158483986e 100644
--- a/arch/mips/sibyte/sb1250/irq.c
+++ b/arch/mips/sibyte/sb1250/irq.c
@@ -57,16 +57,6 @@ static void sb1250_set_affinity(unsigned int irq, cpumask_t mask);
 extern unsigned long ldt_eoi_space;
 #endif
 
-#ifdef CONFIG_KGDB
-static int kgdb_irq;
-
-/* Default to UART1 */
-int kgdb_port = 1;
-#ifdef CONFIG_SERIAL_SB1250_DUART
-extern char sb1250_duart_present[];
-#endif
-#endif
-
 static struct irq_chip sb1250_irq_type = {
         .name = "SB1250-IMR",
         .ack = ack_sb1250_irq,
@@ -313,55 +303,10 @@ void __init arch_init_irq(void)
          * does its own management of IP7.
          */
 
-#ifdef CONFIG_KGDB
-        imask |= STATUSF_IP6;
-#endif
         /* Enable necessary IPs, disable the rest */
         change_c0_status(ST0_IM, imask);
-
-#ifdef CONFIG_KGDB
-        if (kgdb_flag) {
-                kgdb_irq = K_INT_UART_0 + kgdb_port;
-
-#ifdef CONFIG_SERIAL_SB1250_DUART
-                sb1250_duart_present[kgdb_port] = 0;
-#endif
-                /* Setup uart 1 settings, mapper */
-                __raw_writeq(M_DUART_IMR_BRK,
-                             IOADDR(A_DUART_IMRREG(kgdb_port)));
-
-                __raw_writeq(IMR_IP6_VAL,
-                             IOADDR(A_IMR_REGISTER(0,
-                                                   R_IMR_INTERRUPT_MAP_BASE) +
-                                    (kgdb_irq << 3)));
-                sb1250_unmask_irq(0, kgdb_irq);
-        }
-#endif
-}
-
-#ifdef CONFIG_KGDB
-
-#include <linux/delay.h>
-
-#define duart_out(reg, val)     csr_out32(val, IOADDR(A_DUART_CHANREG(kgdb_port, reg)))
-#define duart_in(reg)           csr_in32(IOADDR(A_DUART_CHANREG(kgdb_port, reg)))
-
-static void sb1250_kgdb_interrupt(void)
-{
-        /*
-         * Clear break-change status (allow some time for the remote
-         * host to stop the break, since we would see another
-         * interrupt on the end-of-break too)
-         */
-        kstat_this_cpu.irqs[kgdb_irq]++;
-        mdelay(500);
-        duart_out(R_DUART_CMD, V_DUART_MISC_CMD_RESET_BREAK_INT |
-                                M_DUART_RX_EN | M_DUART_TX_EN);
-        set_async_breakpoint(&get_irq_regs()->cp0_epc);
 }
 
-#endif  /* CONFIG_KGDB */
-
 extern void sb1250_mailbox_interrupt(void);
 
 static inline void dispatch_ip2(void)
@@ -407,11 +352,6 @@ asmlinkage void plat_irq_dispatch(void)
                 sb1250_mailbox_interrupt();
 #endif
 
-#ifdef CONFIG_KGDB
-        else if (pending & CAUSEF_IP6)                  /* KGDB (uart 1) */
-                sb1250_kgdb_interrupt();
-#endif
-
         else if (pending & CAUSEF_IP2)
                 dispatch_ip2();
         else