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Re: 2.6.14 - problem with malta

To: "Kishore K" <hellokishore@gmail.com>
Subject: Re: 2.6.14 - problem with malta
From: "Kevin D. Kissell" <kevink@mips.com>
Date: Mon, 27 Mar 2006 15:09:33 +0200
Cc: "Ralf Baechle" <ralf@linux-mips.org>, <linux-mips@linux-mips.org>
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <f07e6e0603240636x5e496cd2g29316d73490aa300@mail.gmail.com> <20060324165518.GA16567@linux-mips.org> <f07e6e0603250122t6328c09coe37141d14396dc12@mail.gmail.com> <000d01c65022$90d758a0$10eca8c0@grendel> <f07e6e0603270326s7acb75e4x3000bb08de93ffc5@mail.gmail.com>
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----- Original Message -----
Thanks for the suggestion. In my config only CONFIG_CPU_MIPS32_R1 and CONFIG_SYS_HAS_CPU_MIPS32_R1 are set. Even then, I observe the same problem. I am enclosing the configuration file along with this mail.
 
My own Malta kernels are built from rather old 2.6 sources, so it's not
clear that all the same options are required/possible.  The questions that
come to mind for me are:
 
1) You're booting a big-endian kernel.  The Malta board can be set up
    for either endianness with a DIP switch, but I believe that it ships
    from the factory in little-endian mode.  Have you verified that the
    endianness setup?
 
2)  You're configuring for hot-pluggable CPUs.  That isn't fully supported
     in the old source base I've got.  It may be fixed in 2.6.14, but do you
     actually need it on a Malta?
 
3) You've got support for MIPS MT (the multithreading extension) enabled,
    with the slave-virtual-processor boot loader, etc.  This stuff only works
    on a 34K core, and could cause severe problems if invoked on a 4Kc.
    At least you don't have SMP/SMTC multi-virtual-processor support
    enabled, which would *definitely* cause a prompt crash on a 4Kc,
    but please turn MIPS_MT off.  If MIPS MT + VPE loader are really
    selected options in the default malta config file, it needs to be fixed!
 
            Regards,
 
            Kevin K.

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