Subject: Re: "OpenPIC versus EPIC" in MPC8240 !

From: ashish anand <[email-masked]>
Date: Mon, 12 Nov 2001 05:26:36 +0530

Sarnath Kannan wrote:

sorry for jumping in between as i was out on long leave.
there is absoluetely no relation of bogus interrupts
with "openpic_init" is populating reserved memory areas of EPIC.

even i agree "openpic_init" is populating reserved memory areas of EPIC may
need a second thought.
you should refrain from saying so firmly without tech. support for that.

Best Regards
Ashish

>   Its not a "HACK" dan. Its a bug. Just verify
> the register layout of OpenPIC and EPIC. You
> will find that "openpic_init" is populating
> reserved memory areas of EPIC. No wonder, we get
> bogus interrupts. You can verify this in the code.
>   Moreover Had the code really wanted seperation
> of vector spaces of OpenPIC and EPIC, it should have
> called "openpic_init" with
> "offset value = "NUM_8259_INTERRUPTS"

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