Date: Fri, 18 Feb 2011 15:02:04 -0800 From: Juli Mallett <jmallett@FreeBSD.org> To: Warner Losh <imp@bsdimp.com> Cc: freebsd-mips@freebsd.org Subject: Re: Bootstraps for Mips/OCTEON platforms Message-ID: <AANLkTimMZY=Lkum6Wf5vNftw9ycfDHQBDbi0pNdamHTW@mail.gmail.com> In-Reply-To: <4D5EF8CA.5010008@bsdimp.com> References: <AC6674AB7BC78549BB231821ABF7A9AE9409045F43@EMBX01-WF.jnpr.net> <4D5EF8CA.5010008@bsdimp.com>
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On Fri, Feb 18, 2011 at 14:55, Warner Losh <imp@bsdimp.com> wrote: > On 02/18/2011 12:08, Andrew Duane wrote: >> >> I'm starting at ground zero (almost) with an Octeon based platform related >> to the OCTEON1 config in the -CURRENT. The board uses an existing MIPS >> bootstrap and loader, but that does not seem to be compatible with what the >> kernel expects. What bootstrap is used normally? u-boot? > > u-boot is what we support. There's no other support in the codebase right > now. uboot gives us: > > in a3 is passed in the cavium hardware descriptor. All other registers are > ignored on boot. We only support version 6 and newer of the boot > descriptor. You can see the details of the structure in > sys/mips/cavium/octeon_machdep.c starting with platform_start(). It's worth noting that we don't use the Simple Executive ELF Application calling convention but the Octeon Linux one, so 'bootoctlinux' should be used instead of 'bootoctelf'. Juli.help
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