Re: Linux 2.6.3 still doesn't boot on UltraSparc I

[Ben Collins]

On Mon, Feb 23, 2004 at 02:32:13PM +0100, Lucas Nussbaum wrote:
> Hi,
> 
> As we reported in [1], Linux 2.6.(2|3) doesnt boot on sparc64. We traced the
> problem back to some changes in arch/sparc64/kernel/head.S (2.6.3 does
> boot with 2.6.1's head.S).
> 
> [1] http://marc.theaimsgroup.com/?l=linux-kernel&m=107643106916202&w=2
> 
> output :
> Allocated 8 Megs of memory at 0x4000000 for kernel
> Loaded kernel version 2.6.3    <--- SILO message
> Illegal Instruction
> {0} ok 
> 
> After a discussion with Ben Collins, it seems that only UltraSparc I are
> affected. Could somebody check the new head.S's assembly code ? We are a
> bit short here on sparc64 ASM...

So backing down to silo < 1.4.0 works with the new head.S on UltraSPARC
I? I don't think the problem itself is in head.S. Changing that would
force silo 1.4.x to not keep the kernel in high memory (would copy it
back down to 0x4000 where the old silo would have put it). I am guessing
the problem is elsewhere.

Try this, keep the new head.S and newer SILO, and edit head.S so that
"HdrS version" is 0x202 instead of 0x300. See if that boots for you
(would confirm my suspicion).

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