From mboxrd@z Thu Jan  1 00:00:00 1970
From: Scott McNutt <smcnutt@psyent.com>
Date: Tue, 08 Mar 2011 19:13:42 -0500
Subject: [U-Boot] [PATCH 15/21] nios2: Generic system restart support
In-Reply-To: <1299519462-25320-16-git-send-email-Kyle.D.Moffett@boeing.com>
References: <1299519462-25320-1-git-send-email-Kyle.D.Moffett@boeing.com>
	<1299519462-25320-16-git-send-email-Kyle.D.Moffett@boeing.com>
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To: u-boot@lists.denx.de

Hi Kyle,

Kyle Moffett wrote:
> The Nios-II port appears to use no generic hardware capability for
> performing a CPU reset.  Since all of the supported boards use the exact
> same code to perform a jump-to-flash it goes into __arch_restart().
> 
> This means that Nios-II has a no-op __arch_emergency_restart() function.
> If the CPU is in an invalid state then jump-to-FLASH probably won't
> work.

If the CPU state is stable enough to call __arch_emergency_restart(),
a jump to the reset address should be fine. In many implementations
the reset code is in on-chip ROM. If things get screwed up enough
to affect the code in on-chip ROM, it probably won't matter what
gets called. ;-)

Thomas, any thoughts?

Regards,
--Scott