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Re: [PATCH] ARM: keystone: add a work around to handle asynchronous external abort

From Jisheng Zhang <jszhang@marvell.com>
Newsgroups linux.kernel
Subject Re: [PATCH] ARM: keystone: add a work around to handle asynchronous external abort
Date 2015-08-18 10:40 +0200
Message-ID <pYKB4-Rg-7@gated-at.bofh.it> (permalink)
References (4 earlier) <pXvb4-6cV-13@gated-at.bofh.it> <pXvb4-6cV-11@gated-at.bofh.it> <pYAV3-3DY-1@gated-at.bofh.it> <pYFBn-2aI-3@gated-at.bofh.it> <pYKhJ-uI-27@gated-at.bofh.it>
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On Tue, 18 Aug 2015 09:13:34 +0100
Russell King - ARM Linux <linux@arm.linux.org.uk> wrote:

> On Mon, Aug 17, 2015 at 08:09:17PM -0700, santosh.shilimkar@oracle.com wrote:
> > From the logs this seems to be mostly clock related issue for some
> > peripheral. If the bootloader clock enable all hack still exists,
> > may be you can try that out.
> > 
> > Another way to debug this is to start disabling peripheral drivers
> > from the kernel 1 by 1 and see if the issue goes away.
> 
> Highly unlikely to make any difference.  As the failure happens soo early
> with the patch applied, the kernel hasn't had much of a chance to touch
> the hardware - about the only things are the decompressor and the kernel
> touching the early console.  As they seem to be working, it suggests
> that's not the cause.
> 
> It seems to be pointing towards something in the boot loader...
> 
> Normally, uboot will hook itself into the vectors to report errors, but
> I wonder whether uboot enables asynchronous aborts while it's running.
> Don't forget to make sure that the aborts are disabled again prior to
> calling the kernel.
> 

Another possible cause: trustzone software.

we root caused such kind of asynchronous external abort on Marvell Berlin SoCs
to a trustzone bug. I'm not sure whether keystone linux is running at normal
world or not.
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[PATCH] ARM: keystone: add a work around to handle asynchronous external abort Murali Karicheri <m-karicheri2@ti.com> - 2015-08-11 21:20 +0200
  Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort Russell King - ARM Linux <linux@arm.linux.org.uk> - 2015-08-14 16:10 +0200
    Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort Lucas Stach <l.stach@pengutronix.de> - 2015-08-14 16:30 +0200
      Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort Murali Karicheri <m-karicheri2@ti.com> - 2015-08-15 00:00 +0200
        Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort Russell King - ARM Linux <linux@arm.linux.org.uk> - 2015-08-15 00:00 +0200
          Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort Murali Karicheri <m-karicheri2@ti.com> - 2015-08-17 16:20 +0200
    Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort santosh shilimkar <santosh.shilimkar@oracle.com> - 2015-08-14 17:20 +0200
      Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort Russell King - ARM Linux <linux@arm.linux.org.uk> - 2015-08-15 00:00 +0200
        Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort Murali Karicheri <m-karicheri2@ti.com> - 2015-08-18 00:20 +0200
          Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort Russell King - ARM Linux <linux@arm.linux.org.uk> - 2015-08-18 00:50 +0200
          Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort "santosh.shilimkar@oracle.com" <santosh.shilimkar@oracle.com> - 2015-08-18 05:20 +0200
            Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort Russell King - ARM Linux <linux@arm.linux.org.uk> - 2015-08-18 10:20 +0200
              Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort Lucas Stach <l.stach@pengutronix.de> - 2015-08-18 10:30 +0200
                Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort Afzal Mohammed <afzal.mohd.ma@gmail.com> - 2015-08-18 14:10 +0200
              Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort Jisheng Zhang <jszhang@marvell.com> - 2015-08-18 10:40 +0200
                Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort Murali Karicheri <m-karicheri2@ti.com> - 2015-08-18 17:00 +0200
              Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort Murali Karicheri <m-karicheri2@ti.com> - 2015-08-18 22:30 +0200
      Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort Murali Karicheri <m-karicheri2@ti.com> - 2015-08-15 00:00 +0200
        Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort "santosh.shilimkar@oracle.com" <santosh.shilimkar@oracle.com> - 2015-08-15 02:10 +0200
  Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort Murali Karicheri <m-karicheri2@ti.com> - 2015-08-14 16:10 +0200
    Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort Lucas Stach <l.stach@pengutronix.de> - 2015-08-14 16:20 +0200
      Re: [PATCH] ARM: keystone: add a work around to handle asynchronous  external abort Murali Karicheri <m-karicheri2@ti.com> - 2015-08-17 16:20 +0200

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