From: linux@arm.linux.org.uk (Russell King - ARM Linux)
To: linux-arm-kernel@lists.infradead.org
Subject: reboot not working on linux-2.6.37 for ARMv7
Date: Fri, 11 Feb 2011 12:03:05 +0000 [thread overview]
Message-ID: <20110211120305.GD23404@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <AANLkTi=FCJr-0aF0LG92PC4Q7J4R5PDU7xobnvCgDHy8@mail.gmail.com>
On Fri, Feb 11, 2011 at 05:01:06PM +0530, shiraz hashim wrote:
> Hi,
>
> I am using linux-2.6.37 on our ARM Cortex A9 (dual core) SMP platform
> with PL310 as Level 2 cache. We observe that on reboot the control
> is not able to reach to the arch_reset.
>
> The problem happens when L1 cache is disabled in
> arm_machine_restart, through cpu_proc_fin() and L2 cache is flushed.
Where's the L2 cache flush? The sequence is:
/* Clean and invalidate caches */
flush_cache_all();
/* Turn off caching */
cpu_proc_fin();
/* Push out any further dirty data, and ensure cache is empty */
flush_cache_all();
and flush_cache_all() calls v7_flush_kern_cache_all() in
arch/arm/mm/cache-v7.S.
I do hope you're not modifying flush_cache_all() to also call the L2
cache functions because that's wrong.
next prev parent reply other threads:[~2011-02-11 12:03 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-11 11:31 reboot not working on linux-2.6.37 for ARMv7 shiraz hashim
2011-02-11 12:03 ` Russell King - ARM Linux [this message]
2011-02-11 12:10 ` Santosh Shilimkar
2011-02-11 12:20 ` Russell King - ARM Linux
2011-02-11 12:23 ` Santosh Shilimkar
2011-02-12 16:15 ` viresh kumar
2011-02-12 16:21 ` Russell King - ARM Linux
2011-02-12 17:23 ` shiraz hashim
2011-02-12 17:32 ` Russell King - ARM Linux
2011-02-12 17:37 ` shiraz hashim
2011-02-13 3:56 ` Rabin Vincent
2011-02-14 3:37 ` shiraz hashim
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