Date: Thu, 27 Sep 2007 23:41:41 +0200 From: Olivier Houchard <mlfbsd@ci0.org> To: Marius Nuennerich <marius.nuennerich@gmx.de> Cc: freebsd-arm@freebsd.org Subject: Re: Comment bug in locore.S? Message-ID: <20070927214141.GB15654@ci0.org> In-Reply-To: <20070927224133.5fc9b24f@sol.hackerzberg.local> References: <20070927171822.0bdec7d9@sol.hackerzberg.local> <20070927170339.GA11021@ci0.org> <20070927224133.5fc9b24f@sol.hackerzberg.local>
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On Thu, Sep 27, 2007 at 10:41:33PM +0200, Marius Nuennerich wrote: > On Thu, 27 Sep 2007 19:03:39 +0200 > Olivier Houchard <mlfbsd@ci0.org> wrote: > > > On Thu, Sep 27, 2007 at 05:18:22PM +0200, Marius Nuennerich wrote: > > > Hi all, > > > > > > > Hi Marius, > > > > > I'm still trying to boot FreeBSD on the neo1973. So far I managed to > > > put bytes over the serial console so I can see where I am. At the > > > moment the (virtual) machine crashes in locore.S (1.16) line 170: > > > ldr pc, .Lvirt_done > > > > > > qemu: fatal: Trying to execute code outside RAM or ROM at 0xc0008??? > > > > > > Which I don't understand because the section should be mapped by the > > > MMU to 0x30008??? at that time. > > > > > > In line 137 the sequence in the comment is described as > > > /* # of sections, PA|attr, VA */ > > > but in line 185 the order is > > > n_sec, VA, PA|attr > > > > > > Is the comment wrong? > > > > > > > No the comment is right, 0xc0000000 should be mapped. > > Did you define STARTUP_PAGETABLE_ADDR ? It's not marked as such, but it is > > mandatory now. > > Yes, in the kernel config there are these lines: > makeoptions KERNPHYSADDR=0x30008000 > makeoptions KERNVIRTADDR=0xc0000000 > options KERNPHYSADDR=0x30008000 > options KERNVIRTADDR=0xc0000000 > options PHYSADDR=0x30000000 > options STARTUP_PAGETABLE_ADDR=0x30800000 > > It's from Andrew Turners config file which he posted on > http://wiki.openmoko.org/wiki/FreeBSD > in the tarball. > Hmmm, I really see no reason why the PA <=> PA mapping would work, but not the VA <=> PA one. I'll try to setup qemu. Can it provide useful informations about its internal state, ie CPU registers, TLB, etc ? Regards, Olivier
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