Date: Wed, 15 Oct 2003 11:12:50 -0400 (EDT) From: Andrew Gallatin <gallatin@cs.duke.edu> To: Peter Grehan <grehan@freebsd.org> Cc: freebsd-ppc@freebsd.org Subject: Re: FYI: rudimentary loader for ppcbug-based systems Message-ID: <16269.25586.238272.357023@grasshopper.cs.duke.edu> In-Reply-To: <3F8CE205.5CB0B9E0@freebsd.org> References: <E087F7025D7E494B8015119695CEDB4C01972204@zpl02exm01.mpsc.mot.com> <3F8CAFAE.6260CFCF@freebsd.org> <20031015044706.GA787@blarf.homeip.net> <3F8CE205.5CB0B9E0@freebsd.org>
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Peter Grehan writes: > Userspace is unnecessarily replicated for each of those platforms. There's > a lot more differences between a lot of FreeBSD/alpha platforms than there is > for the different NetBSD PPC platforms. The differences in the alpha platforms are mainly variations on how the PCI bus is accessed and are more akin to the differences on the x86 between using ACPI and pcibios to access the pci bus. The low level code such as what NetBSD would put in machdep.c and locore.s is the same across all alphas. Drew
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