Date: Sun, 23 Dec 2001 14:34:08 -0500 From: Jake Burkholder <jake@locore.ca> To: Thomas Moestl <tmm@FreeBSD.ORG> Cc: Jamey Wood <Jamey.Wood@Sun.COM>, freebsd-sparc@FreeBSD.ORG Subject: Re: compiling a sparc64 kernel? Message-ID: <20011223143408.A82980@locore.ca> In-Reply-To: <20011223162751.C659@crow.dom2ip.de>; from tmm@FreeBSD.ORG on Sun, Dec 23, 2001 at 04:27:51PM %2B0100 References: <1483c13c42.13c421483c@smi.sun.com> <20011223162751.C659@crow.dom2ip.de>
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Apparently, On Sun, Dec 23, 2001 at 04:27:51PM +0100,
Thomas Moestl said words to the effect of;
> On Sat, 2001/12/22 at 19:01:51 -0800, Jamey Wood wrote:
> > I've been trying for a few days to build the sparc64 kernel,
> > but kept running into compiler errors (detailed notes below).
> > I put in some hacks to get everything to compile, but the resulting
> > kernel doesn't look to get as far into a boot as the binary version I
> > downloaded per tmm's sparc64 README. Note that I've got an Ultra 1
> > (so I understand the boot won't get very far because of no sbus
> > support, which is where I'm hoping I might be able to help the port).
>
> Cool!
>
> > For me, tmm's kernel results in:
> >
> > /kernel data=0x202fb8+0xdfdc0 syms=[0x8+0x36210+0x8+0x2887c]
> > Hit [Enter] to boot immediately, or any other key for command prompt.
> > Booting [/kernel]...
> > calling autoload
> > nothing to autoload yet.
> > post autoload
> > jumping to kernel entry at 0xc0030000.
> > sparc64_init: mdp=0xc0344000 kmdp=0xc0344000 boothowto=0
> > envp=0xc0342000 end=0x0
> > panic: trap_dmmu_miss: vmspace NULL
> > Debugger("panic")
> > Stopped at 0xc018479c: ta %xcc, 1
>
> Hmmm, well, it should get quite a bit farther. Can you please post a
> backtrace of that panic?
Hmm, indeed. The end=0x0 is puzzling and might cause problems.
>
> > And my custom-compiled version (with the potentially bogus hacks
> > I explain in detail below) gets:
> >
> > /kernel data=0x134ab8+0x4d2b8 syms=[0x8+0x255c0+0x8+0x1b653]
> > Hit [Enter] to boot immediately, or any other key for command prompt.
> > Booting [/kernel]...
> > calling autoload
> > nothing to autoload yet.
> > post autoload
> > jumping to kernel entry at 0xc0028000.
> >
> > RED State Exception
> >
> > TL=0000.0000.0000.0005 TT=0000.0000.0000.0080
> > TPC=0000.0000.c002.4200 TnPC=0000.0000.c002.4204
> > TSTATE=0000.0099.5800.1506
> > TL=0000.0000.0000.0004 TT=0000.0000.0000.0010
> > TPC=0000.0000.c002.4d50 TnPC=0000.0000.c002.4d54
> > TSTATE=0000.0099.5804.1406
> > TL=0000.0000.0000.0003 TT=0000.0000.0000.0068
> > TPC=0000.0000.c002.82a8 TnPC=0000.0000.c002.82ac
> > TSTATE=0000.0099.5800.1506
> > TL=0000.0000.0000.0002 TT=0000.0000.0000.0034
> > TPC=0000.0000.c00e.3dac TnPC=0000.0000.c00e.3db0
> > TSTATE=0000.0099.5800.1605
> > TL=0000.0000.0000.0001 TT=0000.0000.0000.004e
> > TPC=000
> >
> > <note that this one never gets to the sparc64_init: printf>
> >
> > I'm trying to compile from a 5.0-current system (updated buildworld
> > >from yesterday), using tmm's toolchain.
> >
> > I'm just looking for an understanding of how to cleanly compile a
> > kernel that'll get as far into the boot as the tmm version. Thanks in
> > advance for any help.
A kernel from cvs should work ok, except it won't have support for pci
devices (which I imagine you don't need anyway). You may need to add
support for the openfirmware console to GENERIC, device ofw_console.
If it doesn't drop to the prom, but you don't get any output past the
loader, try that.
I'm away from home for a few days (holidays, back on the 26th), so I don't
have full access to my test machine, but I'll do what I can to help.
To do development you really want the code from perforce. I've requested that
the sparc64 branch be exported via cvsup on cvsup10, but I don't know how long
that will take to get setup.
Jake
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