Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755407AbaDVSkI (ORCPT ); Tue, 22 Apr 2014 14:40:08 -0400 Received: from arroyo.ext.ti.com ([192.94.94.40]:57648 "EHLO arroyo.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751577AbaDVSkF (ORCPT ); Tue, 22 Apr 2014 14:40:05 -0400 Message-ID: <5356B769.1020306@ti.com> Date: Tue, 22 Apr 2014 14:39:37 -0400 From: Santosh Shilimkar User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.3.0 MIME-Version: 1.0 To: Joel Fernandes , Linux OMAP List , Linux ARM Kernel List , Linux Kernel Mailing List CC: Russell King , Nishanth Menon , Tony Lindgren Subject: Re: [PATCH] ARM: OMAP5: Switch to THUMB mode if needed on secondary CPU References: <1398191506-3741-1-git-send-email-joelf@ti.com> In-Reply-To: <1398191506-3741-1-git-send-email-joelf@ti.com> Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 > Cc: Russell King > Cc: Nishanth Menon > Cc: Tony Lindgren > Signed-off-by: Joel Fernandes > --- > arch/arm/mach-omap2/omap-headsmp.S | 8 ++++++-- > 1 file changed, 6 insertions(+), 2 deletions(-) > Looks fine to me .. Acked-by: Santosh Shilimkar -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/