From: santosh.shilimkar@ti•com (Santosh Shilimkar)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH] ARM: OMAP5: Switch to THUMB mode if needed on secondary CPU
Date: Tue, 22 Apr 2014 14:39:37 -0400 [thread overview]
Message-ID: <5356B769.1020306@ti.com> (raw)
In-Reply-To: <1398191506-3741-1-git-send-email-joelf@ti.com>
On Tuesday 22 April 2014 02:31 PM, Joel Fernandes wrote:
> On my DRA7 system, when the kernel is built in THUMB mode, the secondary CPU
> (Cortex A15) fails to come up causing SMP boot on second CPU to timeout. This
> seems to be because the CPU is in ARM mode once the ROM hands over control to
> the kernel. Switch to THUMB mode if required once the kernel is control of
> secondary CPU. On OMAP4 on the other hand, it appears to be in THUMB mode on
> entry so this is not required and SMP boot works as is.
>
> Cc: Santosh Shilimkar <santosh.shilimkar@ti•com>
> Cc: Russell King <linux@arm•linux.org.uk>
> Cc: Nishanth Menon <nm@ti•com>
> Cc: Tony Lindgren <tony@atomide•com>
> Signed-off-by: Joel Fernandes <joelf@ti•com>
> ---
> arch/arm/mach-omap2/omap-headsmp.S | 8 ++++++--
> 1 file changed, 6 insertions(+), 2 deletions(-)
>
Looks fine to me ..
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti•com>
next prev parent reply other threads:[~2014-04-22 18:39 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-22 18:31 [PATCH] ARM: OMAP5: Switch to THUMB mode if needed on secondary CPU Joel Fernandes
2014-04-22 18:39 ` Santosh Shilimkar [this message]
2014-04-22 18:47 ` Nishanth Menon
2014-04-22 19:39 ` Joel Fernandes
2014-04-28 16:43 ` Dave Martin
2014-04-28 17:20 ` Joel Fernandes
2014-04-28 17:21 ` Joel Fernandes
2014-04-29 9:17 ` Dave Martin
2014-04-29 16:36 ` Joel Fernandes
2014-04-29 18:31 ` Dave Martin
2014-04-30 2:55 ` Joel Fernandes
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