2010-05-13 Joel Sherrill <joel.sherrill@oarcorp.com>

	* Makefile.am, configure.ac: rbtx4925, rbtx4938, and hurricane had very
	similar versions of exception. Now all use shared/irq/exception.S
	* startup/exception.S: Removed.

4 files changed, 16 insertions, 690 deletions

diff --git a/c/src/lib/libbsp/mips/hurricane/ChangeLog b/c/src/lib/libbsp/mips/hurricane/ChangeLog
index 12f3db3930..4eaf22236f 100644
--- a/c/src/lib/libbsp/mips/hurricane/ChangeLog
+++ b/c/src/lib/libbsp/mips/hurricane/ChangeLog
@@ -1,5 +1,11 @@
 2010-05-13	Joel Sherrill <joel.sherrill@oarcorp.com>
 
+	* Makefile.am, configure.ac: rbtx4925, rbtx4938, and hurricane had very
+	similar versions of exception. Now all use shared/irq/exception.S
+	* startup/exception.S: Removed.
+
+2010-05-13	Joel Sherrill <joel.sherrill@oarcorp.com>
+
 	* startup/exception.S: Minor changes to make more similar to the shared
 	version.
 
diff --git a/c/src/lib/libbsp/mips/hurricane/Makefile.am b/c/src/lib/libbsp/mips/hurricane/Makefile.am
index 6424e57d65..1b36c27e42 100644
--- a/c/src/lib/libbsp/mips/hurricane/Makefile.am
+++ b/c/src/lib/libbsp/mips/hurricane/Makefile.am
@@ -36,8 +36,8 @@ libbsp_a_SOURCES += ../../shared/bspclean.c \
     ../../shared/bsppredriverhook.c startup/bspstart.c \
     ../../shared/bootcard.c ../../shared/sbrk.c \
     ../../shared/gnatinstallhandler.c ../../shared/setvec.c \
-    startup/inittlb.c \
-    startup/idtmem.S startup/idttlb.S startup/exception.S
+    startup/inittlb.c startup/idtmem.S startup/idttlb.S \
+    ../shared/startup/exception.S startup/usc.S
 # clock
 libbsp_a_SOURCES += clock/ckinit.c
 # console
diff --git a/c/src/lib/libbsp/mips/hurricane/configure.ac b/c/src/lib/libbsp/mips/hurricane/configure.ac
index c350c36509..2f861f0612 100644
--- a/c/src/lib/libbsp/mips/hurricane/configure.ac
+++ b/c/src/lib/libbsp/mips/hurricane/configure.ac
@@ -16,6 +16,14 @@ RTEMS_PROG_CC_FOR_TARGET
 RTEMS_CANONICALIZE_TOOLS
 RTEMS_PROG_CCAS
 
+RTEMS_BSPOPTS_SET([BSP_HAS_USC320],[*],[1])
+RTEMS_BSPOPTS_HELP([BSP_HAS_USC320],
+[This BSP has a V3 USC320 system controller chip.])
+
+RTEMS_BSPOPTS_SET([BSP_HAS_RM52xx],[*],[1])
+RTEMS_BSPOPTS_HELP([BSP_HAS_RM52xx],
+[This BSP has a RM52xx compatible CPU.])
+
 RTEMS_BSP_CLEANUP_OPTIONS(0, 0)
 
 # Explicitly list all Makefiles here
diff --git a/c/src/lib/libbsp/mips/hurricane/startup/exception.S b/c/src/lib/libbsp/mips/hurricane/startup/exception.S
deleted file mode 100644
index 157150324a..0000000000
--- a/c/src/lib/libbsp/mips/hurricane/startup/exception.S
+++ /dev/null
@@ -1,688 +0,0 @@
-/*  exception.S
- *
- *  This file contains a customized MIPS exception handler.
- *  It hooks into the exception handler present in the resident
- *  PMON debug monitor.
- *
- *  Author: Bruce Robinson
- *
- *  This code was derived from cpu_asm.S with the following copyright:
- *
- *  COPYRIGHT (c) 1996 by Transition Networks Inc.
- *
- *  To anyone who acknowledges that this file is provided "AS IS"
- *  without any express or implied warranty:
- *      permission to use, copy, modify, and distribute this file
- *      for any purpose is hereby granted without fee, provided that
- *      the above copyright notice and this notice appears in all
- *      copies, and that the name of Transition Networks not be used in
- *      advertising or publicity pertaining to distribution of the
- *      software without specific, written prior permission.
- *      Transition Networks makes no representations about the suitability
- *      of this software for any purpose.
- *
- *  Derived from c/src/exec/score/cpu/no_cpu/cpu_asm.s:
- *
- *  COPYRIGHT (c) 1989-1999.
- *  On-Line Applications Research Corporation (OAR).
- *
- *  The license and distribution terms for this file may be
- *  found in the file LICENSE in this distribution or at
- *  http://www.rtems.com/license/LICENSE.
- *
- *  $Id$
- */
-/* @(#)exception.S       10/11/04     1.00 */
-
-#include <rtems/mips/iregdef.h>
-#include <rtems/mips/idtcpu.h>
-#include <usc.h>
-
-
-#define FRAME(name,frm_reg,offset,ret_reg)      \
-        .globl  name;                           \
-        .ent    name;                           \
-name:;                                          \
-        .frame  frm_reg,offset,ret_reg
-#define ENDFRAME(name)                          \
-        .end name
-
-
-#if __mips == 3
-/* 64 bit register operations */
-#define NOP	nop
-#define ADD	dadd
-#define STREG	sd
-#define LDREG	ld
-#define ADDU	addu
-#define ADDIU	addiu
-#define STREGC1	sdc1
-#define LDREGC1	ldc1
-#define R_SZ	8
-#define F_SZ	8
-#define SZ_INT	8
-#define SZ_INT_POW2 3
-
-/* XXX if we don't always want 64 bit register ops, then another ifdef */
-
-#elif __mips == 1
-/* 32 bit register operations*/
-#define NOP	nop
-#define ADD	add
-#define STREG	sw
-#define LDREG	lw
-#define ADDU	add
-#define ADDIU	addi
-#define STREGC1	swc1
-#define LDREGC1	lwc1
-#define R_SZ	4
-#define F_SZ	4
-#define SZ_INT	4
-#define SZ_INT_POW2 2
-#else
-#error "mips assembly: what size registers do I deal with?"
-#endif
-
-
-#define ISR_VEC_SIZE	4
-#define EXCP_STACK_SIZE (NREGS*R_SZ)
-
-
-#ifdef __GNUC__
-#define EXTERN(x,size) .extern x,size
-#else
-#define EXTERN(x,size)
-#endif
-
-
-EXTERN(_ISR_Nest_level, 4)
-EXTERN(_Thread_Dispatch_disable_level,4)
-EXTERN(_Context_Switch_necessary,1)
-EXTERN(_ISR_Signals_to_thread_executing,1)
-.extern _Thread_Dispatch
-.extern _ISR_Vector_table
-
-/*  void __ISR_Handler()
- *
- *  This routine provides the RTEMS interrupt management.
- *
- */
-
-#if 0
-void _ISR_Handler()
-{
-   /*
-    *  This discussion ignores a lot of the ugly details in a real
-    *  implementation such as saving enough registers/state to be
-    *  able to do something real.  Keep in mind that the goal is
-    *  to invoke a user's ISR handler which is written in C and
-    *  uses a certain set of registers.
-    *
-    *  Also note that the exact order is to a large extent flexible.
-    *  Hardware will dictate a sequence for a certain subset of
-    *  _ISR_Handler while requirements for setting
-    */
-
-  /*
-   *  At entry to "common" _ISR_Handler, the vector number must be
-   *  available.  On some CPUs the hardware puts either the vector
-   *  number or the offset into the vector table for this ISR in a
-   *  known place.  If the hardware does not give us this information,
-   *  then the assembly portion of RTEMS for this port will contain
-   *  a set of distinct interrupt entry points which somehow place
-   *  the vector number in a known place (which is safe if another
-   *  interrupt nests this one) and branches to _ISR_Handler.
-   *
-   */
-#endif
-FRAME(bsp_ISR_Handler,sp,0,ra)
-	.set noreorder
-
-	mfc0 k0,C0_CAUSE	/* Determine if an interrupt generated this exception */
-	nop
-	and k1,k0,CAUSE_EXCMASK
-	beq k1,zero,_chk_int	/* If so, branch to service here */
-	nop
-	la  k0,_int_esr_link	/* Otherwise, jump to next exception handler in PMON exception chain */
-	lw  k0,(k0)
-	lw  k0,4(k0)
-	j   k0
-	nop
-_chk_int:
-	mfc0 k1,C0_SR
-	nop
-	and k0,k1
-	and k0,CAUSE_IPMASK
-	beq k0,zero,_ISR_Handler_quick_exit	/* external interrupt not enabled, ignore */
-
-	nop
-
-/* For debugging interrupts, clear EXL to allow breakpoints */
-#if 0
-        MFC0    k0, C0_SR
-#if __mips == 3
-	li	k1,SR_EXL	/* Clear EXL and Set IE to enable interrupts */
-	not	k1
-	and	k0,k1
-	li	k1,SR_IE
-#elif __mips == 1
-	li	k1,SR_IEC
-#endif
-	or	k0, k1
-        mtc0    k0, C0_SR
-	NOP
-#endif
-
-
-  /*
-   *  save some or all context on stack
-   *  may need to save some special interrupt information for exit
-   */
-
-        /* Q: _ISR_Handler, not using IDT/SIM ...save extra regs? */
-
-        /* wastes a lot of stack space for context?? */
-	ADDIU    sp,sp,-EXCP_STACK_SIZE
-
-        STREG ra, R_RA*R_SZ(sp)  /* store ra on the stack */
-        STREG v0, R_V0*R_SZ(sp)
-        STREG v1, R_V1*R_SZ(sp)
-        STREG a0, R_A0*R_SZ(sp)
-        STREG a1, R_A1*R_SZ(sp)
-        STREG a2, R_A2*R_SZ(sp)
-        STREG a3, R_A3*R_SZ(sp)
-        STREG t0, R_T0*R_SZ(sp)
-        STREG t1, R_T1*R_SZ(sp)
-        STREG t2, R_T2*R_SZ(sp)
-        STREG t3, R_T3*R_SZ(sp)
-        STREG t4, R_T4*R_SZ(sp)
-        STREG t5, R_T5*R_SZ(sp)
-        STREG t6, R_T6*R_SZ(sp)
-        STREG t7, R_T7*R_SZ(sp)
-        mflo  t0
-        STREG t8, R_T8*R_SZ(sp)
-        STREG t0, R_MDLO*R_SZ(sp)
-        STREG t9, R_T9*R_SZ(sp)
-        mfhi  t0
-        STREG gp, R_GP*R_SZ(sp)
-        STREG t0, R_MDHI*R_SZ(sp)
-        STREG fp, R_FP*R_SZ(sp)
-
-        .set noat
-        STREG AT, R_AT*R_SZ(sp)
-        .set at
-
-        mfc0     t0,C0_SR
-	dmfc0    t1,C0_EPC
-        STREG    t0,R_SR*R_SZ(sp)
-        STREG    t1,R_EPC*R_SZ(sp)
-
-  /*
-   *
-   *  #if ( CPU_HAS_SOFTWARE_INTERRUPT_STACK == TRUE )
-   *    if ( _ISR_Nest_level == 0 )
-   *      switch to software interrupt stack
-   *  #endif
-   */
-
-  /*
-   *  _ISR_Nest_level++;
-   */
-        lw	t0,_ISR_Nest_level
-	NOP
-        add	t0,t0,1
-        sw	t0,_ISR_Nest_level
-  /*
-   *  _Thread_Dispatch_disable_level++;
-   */
-        lw	t1,_Thread_Dispatch_disable_level
-	NOP
-        add	t1,t1,1
-        sw	t1,_Thread_Dispatch_disable_level
-
-  /*
-   *  Call the CPU model or BSP specific routine to decode the
-   *  interrupt source and actually vector to device ISR handlers.
-   */
-	move	 a0,sp
-        jal      mips_vector_isr_handlers
-        NOP
-
-_ISR_Handler_cleanup:
-
-  /*
-   *  --_ISR_Nest_level;
-   */
-        lw	t2,_ISR_Nest_level
-	NOP
-        add	t2,t2,-1
-        sw	t2,_ISR_Nest_level
-  /*
-   *  --_Thread_Dispatch_disable_level;
-   */
-        lw	t1,_Thread_Dispatch_disable_level
-	NOP
-        add	t1,t1,-1
-        sw	t1,_Thread_Dispatch_disable_level
-  /*
-   *  if ( _Thread_Dispatch_disable_level || _ISR_Nest_level )
-   *    goto the label "exit interrupt (simple case)"
-   */
-        or  t0,t2,t1
-        bne t0,zero,_ISR_Handler_exit
-        NOP
-
-
-  /*
-   *  #if ( CPU_HAS_SOFTWARE_INTERRUPT_STACK == TRUE )
-   *    restore stack
-   *  #endif
-   *
-   *  if ( !_Context_Switch_necessary && !_ISR_Signals_to_thread_executing )
-   *    goto the label "exit interrupt (simple case)"
-   */
-        lb	t0,_Context_Switch_necessary
-        lb	t1,_ISR_Signals_to_thread_executing
-	NOP
-        or 	t0,t0,t1
-        beq	t0,zero,_ISR_Handler_exit
-        NOP
-
-/*
-** Turn on interrupts before entering Thread_Dispatch which
-** will run for a while, thus allowing new interrupts to
-** be serviced.  Observe the Thread_Dispatch_disable_level interlock
-** that prevents recursive entry into Thread_Dispatch.
-*/
-
-        mfc0    t0, C0_SR
-#if __mips == 3
-	li	t1,SR_EXL	/* Clear EXL and Set IE to enable interrupts */
-	not	t1
-	and	t0,t1
-	li	t1,SR_IE
-#elif __mips == 1
-	li	t1,SR_IEC
-#endif
-	or	t0, t1
-        mtc0    t0, C0_SR
-	NOP
-
-	/* save off our stack frame so the context switcher can get to it */
-	la	t0,__exceptionStackFrame
-	STREG	sp,(t0)
-
-        jal     _Thread_Dispatch
-        NOP
-
-	/* and make sure its clear in case we didn't dispatch.  if we did, its
-	** already cleared */
-	la	t0,__exceptionStackFrame
-	STREG	zero,(t0)
-	NOP
-
-/*
-** turn interrupts back off while we restore context so
-** a badly timed interrupt won't accidentally mess things up
-*/
-        mfc0    t0, C0_SR
-#if __mips == 3
-	li	t1,SR_IE		/* Clear IE first (recommended) */
-	not	t1
-	and	t0,t1
-        mtc0    t0, C0_SR
-	li	t1,SR_EXL | SR_IE	/* Set EXL and IE, this puts status register bits back to interrupted state */
-	or	t0,t1
-#elif __mips == 1
-	/* ints off, current & prev kernel mode on (kernel mode enabled is bit clear..argh!) */
-	li	t1,SR_IEC | SR_KUP | SR_KUC
-	not	t1
-	and	t0, t1
-#endif
-
-#if __mips == 1
-	/* disabled 7/29, gregm, this tasks context was saved previously in an interrupt,
-	** so we'll just restore the task's previous interrupt enables.
-
-	**
-	** make sure previous int enable is on  because we're returning from an interrupt
-	** which means interrupts have to be enabled
-
-	li	t1,SR_IEP
-	or	t0,t1
-	*/
-#endif
-        mtc0    t0, C0_SR
-	NOP
-
-  /*
-   *  prepare to get out of interrupt
-   *  return from interrupt  (maybe to _ISR_Dispatch)
-   *
-   *  LABEL "exit interrupt (simple case):"
-   *  prepare to get out of interrupt
-   *  return from interrupt
-   */
-
-_ISR_Handler_exit:
-
-/* restore interrupt context from stack */
-        LDREG t8, R_MDLO*R_SZ(sp)
-        LDREG t0, R_T0*R_SZ(sp)
-        mtlo  t8
-        LDREG t8, R_MDHI*R_SZ(sp)
-        LDREG t1, R_T1*R_SZ(sp)
-        mthi  t8
-        LDREG t2, R_T2*R_SZ(sp)
-        LDREG t3, R_T3*R_SZ(sp)
-        LDREG t4, R_T4*R_SZ(sp)
-        LDREG t5, R_T5*R_SZ(sp)
-        LDREG t6, R_T6*R_SZ(sp)
-        LDREG t7, R_T7*R_SZ(sp)
-        LDREG t8, R_T8*R_SZ(sp)
-        LDREG t9, R_T9*R_SZ(sp)
-        LDREG gp, R_GP*R_SZ(sp)
-        LDREG fp, R_FP*R_SZ(sp)
-        LDREG ra, R_RA*R_SZ(sp)
-        LDREG a0, R_A0*R_SZ(sp)
-        LDREG a1, R_A1*R_SZ(sp)
-        LDREG a2, R_A2*R_SZ(sp)
-        LDREG a3, R_A3*R_SZ(sp)
-        LDREG v1, R_V1*R_SZ(sp)
-        LDREG v0, R_V0*R_SZ(sp)
-
-        LDREG k1, R_EPC*R_SZ(sp)
-	mtc0  k1,C0_EPC
-
-	.set noat
-        LDREG     AT, R_AT*R_SZ(sp)
-        .set at
-
-        ADDIU     sp,sp,EXCP_STACK_SIZE
-
-_ISR_Handler_quick_exit:
-	eret
-	nop
-
-
-	/* Interrupts from USC320 are serviced here */
-	.global	USC_isr
-	.extern	Clock_isr
-USC_isr:
-	/* check if it's a USC320 heartbeat interrupt */
-        la      k0,INT_STAT	/* read INT_STAT register */
-        lw      k0,(k0)
-        nop			/* reading from external device	*/
-        sll     k0,(31-21)	/* test bit 21 (HBI) */
-
-        bgez	k0,USC_isr2	/* branch if not a heartbeat interrupt */
-	NOP
-
-	/* clear the heartbeat interrupt */
-	la      k0,INT_STAT
-	li      t0,HBI_MASK
-	sw      t0,(k0)
-	/* wait for interrupt to clear */
-USC_isr1:
-	la      k0,INT_STAT	/* read INT_STAT register */
-	lw      k0,(k0)
-	nop			/* reading from external device */
-        sll     k0,(31-21)	/* test bit 21 (HBI) */
-        bltz    k0,USC_isr1   	/* branch if bit set */
-        nop
-	j	Clock_isr	/* Jump to clock isr */
-	nop
-USC_isr2:
-	j	ra		/* no serviceable interrupt, return without doing anything */
-	nop
-
-       .set    reorder
-
-ENDFRAME(bsp_ISR_Handler)
-
-
-FRAME(_BRK_Handler,sp,0,ra)
-	.set noreorder
-
-	la	k0,INT_CFG3	/* Disable heartbeat interrupt in USC320, it interferes with PMON exception handler */
-	lw	k1,(k0)
-	li	k0,~HBI_MASK
-	and	k1,k1,k0
-	la	k0,INT_CFG3
-	sw	k1,(k0)
-
-	la  k0,_brk_esr_link	/* Jump to next exception handler in PMON exception chain */
-	lw  k0,(k0)
-	lw  k0,4(k0)
-	j   k0
-	nop
-
-	.set reorder
-ENDFRAME(_BRK_Handler)
-
-
-/**************************************************************************
-**
-**	init_exc_vecs() - moves the exception code into the addresses
-**			  reserved for exception vectors
-**
-**	UTLB Miss exception vector at address 0x80000000
-**
-**	General exception vector at address 0x80000080
-**
-**	RESET exception vector is at address 0xbfc00000
-**
-***************************************************************************/
-
-FRAME(init_exc_vecs,sp,0,ra)
-	.set noreorder
-
-	.extern mon_onintr
-
-/* Install interrupt handler in PMON exception handling chain */
-
-	addiu	sp,sp,-8
-	sw	ra,(sp)			/* Save ra contents on stack */
-	move	a0,zero
-	la	a1,_int_esr_link
-	jal	mon_onintr		/* Make PMON system call to install interrupt exception handler */
-	nop
-	li	a0,9
-	la	a1,_brk_esr_link
-	jal	mon_onintr		/* Make PMON system call to install break exception handler */
-	nop
-	lw	ra,(sp)
-	addiu	sp,sp,8			/* Restore ra contents from stack */
-	j	ra
-	nop
-
-	.set reorder
-ENDFRAME(init_exc_vecs)
-
-
-
-/***************************************************************************
-**
-**   The following code was added to support boards using V3 USC320
-**     system controller chip.
-**
-****************************************************************************/
-
-/*************************************************************
-*  init_hbt()
-*	Initialize the heartbeat timer
-*/
-FRAME(init_hbt,sp,0,ra)
-	.set noreorder
-	la	t0,SYSTEM	# Unlock USC registers
-	li	t1,0xA5
-	sb	t1,(t0)
-
-	la	t0,WD_HBI	# Initialize heatbeat and watchdog timers
-
-				# (1 / 64 MHz) * 4000 * (63 + 1) = 4000.0 microseconds
-				# Watchdog period is heartbeat period times watchdog timer constant (bits 7 - 0)
-				# Watchdog period = 4000 * 5 = 20000 microseconds
-	li	t1,(WD_EN | HBI_4000_PS | 0x00003F00 | 0x5)
-
-				# (1 / 64 MHz) * 4000 * (15 + 1) = 1000.0 microseconds
-				# Watchdog period is heartbeat period times watchdog timer constant (bits 7 - 0)
-				# Watchdog period = 1000 * 20 = 20000 microseconds
-	li	t1,(WD_EN | HBI_4000_PS | 0x00000F00 | 0x14)
-
-				# (1 / 64 MHz) * 40000 * (15 + 1) = 10000.0 microseconds
-				# Watchdog period is heartbeat period times watchdog timer constant (bits 7 - 0)
-				# Watchdog period = 10000 * 20 = 200000 microseconds
-	li	t1,(WD_EN | HBI_4000_PS | 0x00009600 | 0x14)
-
-	sw	t1,(t0)
-
-	la	t0,SYSTEM	# Lock USC registers
-	li	t1,0x60
-	sb	t1,(t0)
-
-	.set reorder
-	j	ra
-	nop
-	.set reorder
-ENDFRAME(init_hbt)
-
-/*************************************************************
-*  reset_wdt()
-*	Reset the watchdog timer
-*/
-FRAME(reset_wdt,sp,0,ra)
-	.set noreorder
-
-	la	t0,WD_HBI+2	# Load address watchdog timer reset byte
-	li	t1,WD_INIT
-	sb	t1,(t0)
-
-	.set reorder
-	j	ra
-	nop
-	.set reorder
-ENDFRAME(reset_wdt)
-
-/*************************************************************
-*  disable_wdt()
-*	Disable watchdog timer
-*/
-FRAME(disable_wdt,sp,0,ra)
-	.set noreorder
-	la	t0,WD_HBI	# Clear watchdog enable bit in control register
-	lw	t1,(t0)
-	li	t2,~WD_EN
-	and	t1,t1,t2
-	sw	t1,(t0)
-
-	.set reorder
-	j	ra
-	nop
-	.set reorder
-ENDFRAME(disable_wdt)
-
-/*************************************************************
-*  enable_hbi(ints)
-*	Enable the heartbeat interrupt
-*/
-FRAME(enable_hbi,sp,0,ra)
-	.set noreorder
-
-	la	t0,INT_CFG3	# Enable heartbeat interrupt in USC320
-	lw	t1,(t0)
-	li	t2,(HBI_MASK | MODE_TOTEM_POLE)
-	or	t1,t1,t2
-	sw	t1,(t0)
-
-	.set reorder
-	j	ra
-	nop
-	.set reorder
-ENDFRAME(enable_hbi)
-
-/*************************************************************
-*  disable_hbi(ints)
-*	Disable the heartbeat interrupt
-*/
-FRAME(disable_hbi,sp,0,ra)
-	.set noreorder
-	la	t0,INT_CFG3	# Disable heartbeat interrupt in USC320
-	lw	t1,(t0)
-	li	t2,~HBI_MASK
-	and	t1,t1,t2
-	sw	t1,(t0)
-
-	.set reorder
-	j	ra
-	nop
-	.set reorder
-ENDFRAME(disable_hbi)
-
-
-/*************************************************************
-*  enable_wdi()
-*	Enable the watchdog interrupt
-*/
-FRAME(enable_wdi,sp,0,ra)
-	.set noreorder
-
-	la	t0,INT_CFG1	# Enable watchdog interrupt in USC320
-	lw	t1,(t0)
-	li	t2,(WDI_MASK | MODE_TOTEM_POLE)
-	or	t1,t1,t2
-	sw	t1,(t0)
-
-	.set reorder
-	j	ra
-	nop
-	.set reorder
-ENDFRAME(enable_wdi)
-
-/*************************************************************
-*  disable_wdi(ints)
-*	Disable the watchdog interrupt
-*/
-FRAME(disable_wdi,sp,0,ra)
-	.set noreorder
-
-	la	t0,INT_CFG1	# Disable watchdog interrupt in USC320
-	lw	t1,(t0)
-	li	t2,~(WDI_MASK | MODE_TOTEM_POLE)
-	and	t1,t1,t2
-	sw	t1,(t0)
-
-	la	t0,INT_STAT	# Clear watchdog interrupt status bit
-	li	t1,WDI_MASK
-	sw	t1,(t0)
-
-	.set reorder
-	j	ra
-	nop
-	.set reorder
-ENDFRAME(disable_wdi)
-
-
-	.data
-
-k1tmp:	.word	0	/* Temporary strage for K1 during interrupt service */
-
-/*************************************************************
-*
-* Exception handler links, used in PMON exception handler chains
-*/
-	/* Interrupt exception service routine link */
-	.global	_int_esr_link
-_int_esr_link:
-	.word	0
-	.word	bsp_ISR_Handler
-
-	/* Break exception service routine link */
-	.global	_brk_esr_link
-_brk_esr_link:
-	.word	0
-	.word	_BRK_Handler
-
-
-
-