From: Tony Lindgren <tony@atomide.com>
To: Joel Fernandes <joelf@ti.com>
Cc: Linux OMAP List <linux-omap@vger.kernel.org>,
Linux ARM Kernel List <linux-arm-kernel@lists.infradead.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Santosh Shilimkar <santosh.shilimkar@ti.com>,
Russell King <linux@arm.linux.org.uk>, Nishanth Menon <nm@ti.com>
Subject: Re: [PATCH v2] ARM: OMAP5: Switch to THUMB mode if needed on secondary CPU
Date: Fri, 25 Apr 2014 09:27:59 -0700 [thread overview]
Message-ID: <20140425162758.GB20807@atomide.com> (raw)
In-Reply-To: <1398195639-29273-1-git-send-email-joelf@ti.com>
* Joel Fernandes <joelf@ti.com> [140422 12:41]:
> On my DRA7 system, when the kernel is built in Thumb-2 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-2 mode if required once the kernel is control of
> secondary CPU. On OMAP4 on the other hand, it appears to be in Thumb-2 mode on
> entry so this is not required and SMP boot works as is.
>
> Also corrected a spurious '+' and updated copyright information.
>
> 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>
> Tested-by: Nishanth Menon <nm@ti.com>
> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
> Signed-off-by: Joel Fernandes <joelf@ti.com>
Thanks applying into omap-for-v3.15/fixes-v2.
Tony
WARNING: multiple messages have this Message-ID (diff)
From: tony@atomide.com (Tony Lindgren)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2] ARM: OMAP5: Switch to THUMB mode if needed on secondary CPU
Date: Fri, 25 Apr 2014 09:27:59 -0700 [thread overview]
Message-ID: <20140425162758.GB20807@atomide.com> (raw)
In-Reply-To: <1398195639-29273-1-git-send-email-joelf@ti.com>
* Joel Fernandes <joelf@ti.com> [140422 12:41]:
> On my DRA7 system, when the kernel is built in Thumb-2 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-2 mode if required once the kernel is control of
> secondary CPU. On OMAP4 on the other hand, it appears to be in Thumb-2 mode on
> entry so this is not required and SMP boot works as is.
>
> Also corrected a spurious '+' and updated copyright information.
>
> 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>
> Tested-by: Nishanth Menon <nm@ti.com>
> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
> Signed-off-by: Joel Fernandes <joelf@ti.com>
Thanks applying into omap-for-v3.15/fixes-v2.
Tony
next prev parent reply other threads:[~2014-04-25 16:27 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-22 19:40 [PATCH v2] ARM: OMAP5: Switch to THUMB mode if needed on secondary CPU Joel Fernandes
2014-04-22 19:40 ` Joel Fernandes
2014-04-25 16:27 ` Tony Lindgren [this message]
2014-04-25 16:27 ` Tony Lindgren
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