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Date:      Wed, 21 Jan 2009 13:52:05 +0000
From:      "Bruce M. Simpson" <bms@FreeBSD.org>
To:        "M. Warner Losh" <imp@bsdimp.com>
Cc:        mips@freebsd.org
Subject:   Re: Minor reorg...
Message-ID:  <49772885.3090405@FreeBSD.org>
In-Reply-To: <20090120.224727.1884751430.imp@bsdimp.com>
References:  <20090120.224727.1884751430.imp@bsdimp.com>

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M. Warner Losh wrote:
> ...
> sentry5		bcm47xx or broadcom
> ^^^^^^^

bcm47xx != bcm5365.

The 47xx chips have major pipeline bugs which require patched GCC 
toolchains to address.

If my addled brain is in the right fluids, I seem to recall Broadcom got 
into a bit of a flap because the patches to deal with the 47xx didn't 
get pushed right back to GCC.

So multiple version(s) of the patches exist.

Other than that, I believe the backplane stuff in the SoCs are similar, 
but NOT identical --  I think the bcm47xx memory controller needs a bit 
of a kick up the arse to work, whereas the bcm5365 based stuff is 
generally setup by firmware.

I think I posted something to list(s) about this in the last 2-3 years....

later
BMS



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