Date: Thu, 27 Sep 2007 19:03:39 +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: <20070927170339.GA11021@ci0.org> In-Reply-To: <20070927171822.0bdec7d9@sol.hackerzberg.local> References: <20070927171822.0bdec7d9@sol.hackerzberg.local>
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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. > Any idea why the mapping doesn't work? > I needed to map the uart with > MMU_INIT(0x50000000, 0x50000000, 1, L1_TYPE_S|L1_S_AP(AP_KRW)) > which worked (I can still put chars after the mmu gets enabled). > > > Kind regards > Marius Regards, Olivier
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