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NMI handling in MIPS64

Subject: NMI handling in MIPS64
From: "Lijun Chen" <>
Date: Mon, 29 Mar 2004 18:39:16 -0500
Organization: Nortel Networks
Original-recipient: rfc822;
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.0.2) Gecko/20021120 Netscape/7.01

I noticed there is a NMI handler in mips32 kernel tree (arch/mips/kernel/head.S 
and traps.c).
But there is not a counterpart in mips64. Do we need one?
From Ralf's earlier emails, the execution of NMI will pass through the 
firmware. Does that
mean just the firmware handles the NMI? And if the NMI can be enabled/disabled?
My testing system is BCM1250 with SB1 cores.

Thanks in advance,

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