[AVR32] NMI debugging

Change the NMI handler to use the die notifier chain to signal anyone
who cares. Add a simple "nmi debugger" which hooks into this chain and
that may dump registers, task state, etc. when it happens.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>

2 files changed, 6 insertions, 0 deletions

diff --git a/include/asm-avr32/irq.h b/include/asm-avr32/irq.h
index 83e6549d7783..9315724c0596 100644
--- a/include/asm-avr32/irq.h
+++ b/include/asm-avr32/irq.h
@@ -11,4 +11,9 @@
 
 #define irq_canonicalize(i)     (i)
 
+#ifndef __ASSEMBLER__
+int nmi_enable(void);
+void nmi_disable(void);
+#endif
+
 #endif /* __ASM_AVR32_IOCTLS_H */
diff --git a/include/asm-avr32/kdebug.h b/include/asm-avr32/kdebug.h
index fd7e99046b2f..ca4f9542365a 100644
--- a/include/asm-avr32/kdebug.h
+++ b/include/asm-avr32/kdebug.h
@@ -5,6 +5,7 @@
 enum die_val {
         DIE_BREAKPOINT,
         DIE_SSTEP,
+        DIE_NMI,
 };
 
 #endif /* __ASM_AVR32_KDEBUG_H */