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@xxxxxxxxx>
---
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
