[PATCH 8/9] MIPS: Add board_* hooks for ebase and NMI

[Kevin Cernekee <cernekee@gmail.com>]

Certain BMIPS platforms need to move the exception vectors and/or
intercept NMI events.  Add hooks to make this possible.

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
---
 arch/mips/include/asm/traps.h |    2 ++
 arch/mips/kernel/traps.c      |    6 ++++++
 2 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/arch/mips/include/asm/traps.h b/arch/mips/include/asm/traps.h
index 90ff2f4..2954bd9 100644
--- a/arch/mips/include/asm/traps.h
+++ b/arch/mips/include/asm/traps.h
@@ -22,7 +22,9 @@ extern void (*board_be_init)(void);
 extern int (*board_be_handler)(struct pt_regs *regs, int is_fixup);
 
 extern void (*board_nmi_handler_setup)(void);
+extern void (*board_nmi_handler)(struct pt_regs *regs);
 extern void (*board_ejtag_handler_setup)(void);
 extern void (*board_bind_eic_interrupt)(int irq, int regset);
+extern void (*board_ebase_setup)(void);
 
 #endif /* _ASM_TRAPS_H */
diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index cbea618..f98349c 100644
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -90,8 +90,10 @@ extern int fpu_emulator_cop1Handler(struct pt_regs *xcp,
 void (*board_be_init)(void);
 int (*board_be_handler)(struct pt_regs *regs, int is_fixup);
 void (*board_nmi_handler_setup)(void);
+void (*board_nmi_handler)(struct pt_regs *regs);
 void (*board_ejtag_handler_setup)(void);
 void (*board_bind_eic_interrupt)(int irq, int regset);
+void (*board_ebase_setup)(void);
 
 
 static void show_raw_backtrace(unsigned long reg29)
@@ -1343,6 +1345,8 @@ void ejtag_exception_handler(struct pt_regs *regs)
  */
 NORET_TYPE void ATTRIB_NORET nmi_exception_handler(struct pt_regs *regs)
 {
+       if (board_nmi_handler)
+               board_nmi_handler(regs);
        bust_spinlocks(1);
        printk("NMI taken!!!!\n");
        die("NMI", regs);
@@ -1682,6 +1686,8 @@ void __init trap_init(void)
                        ebase += (read_c0_ebase() & 0x3ffff000);
        }
 
+       if (board_ebase_setup)
+               board_ebase_setup();
        per_cpu_trap_init();
 
        /*
-- 
1.7.6.3