From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751174AbaENTcs (ORCPT ); Wed, 14 May 2014 15:32:48 -0400 Received: from mail-ee0-f45.google.com ([74.125.83.45]:65058 "EHLO mail-ee0-f45.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750705AbaENTcq (ORCPT ); Wed, 14 May 2014 15:32:46 -0400 Message-ID: <5373C4D1.3070703@gmail.com> Date: Wed, 14 May 2014 21:32:33 +0200 From: Tomasz Figa User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0 MIME-Version: 1.0 To: Chanwoo Choi , kgene.kim@samsung.com, t.figa@samsung.com CC: linux-kernel@vger.kernel.org, linux@arm.linux.org.uk, ben-linux@fluff.org, arnd@arndb.de, olof@lixom.net, marc.zyngier@arm.com, thomas.abraham@linaro.org, kyungmin.park@samsung.com, inki.dae@samsung.com, sw0312.kim@samsung.com, hyunhee.kim@samsung.com, yj44.cho@samsung.com, chanho61.park@samsung.com, sajjan.linux@gmail.com, tushar.behera@linaro.org, sachin.kamat@linaro.org, linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org Subject: Re: [PATCHv5 2/5] ARM: EXYNOS: Support secondary CPU boot of Exynos3250 References: <1399986308-23744-1-git-send-email-cw00.choi@samsung.com> <1399986308-23744-3-git-send-email-cw00.choi@samsung.com> In-Reply-To: <1399986308-23744-3-git-send-email-cw00.choi@samsung.com> X-Enigmail-Version: 1.6 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 Hi, On 13.05.2014 15:05, Chanwoo Choi wrote: > This patch fix the offset of CPU boot address and don't need to send smc call > of SMC_CMD_CPU1BOOT command for secondary CPU boot because Exynos3250 removes > WFE in secure mode. > > Signed-off-by: Chanwoo Choi > Acked-by: Kyungmin Park > --- > arch/arm/mach-exynos/firmware.c | 9 ++++++++- > 1 file changed, 8 insertions(+), 1 deletion(-) > > diff --git a/arch/arm/mach-exynos/firmware.c b/arch/arm/mach-exynos/firmware.c > index 739bdc8..eb91d23 100644 > --- a/arch/arm/mach-exynos/firmware.c > +++ b/arch/arm/mach-exynos/firmware.c > @@ -30,6 +30,13 @@ static int exynos_do_idle(void) > static int exynos_cpu_boot(int cpu) > { > /* > + * Exynos3250 doesn't need to send smc command for secondary CPU boot > + * because Exynos3250 removes WFE in secure mode. > + */ > + if (soc_is_exynos3250()) > + return 0; > + > + /* > * The second parameter of SMC_CMD_CPU1BOOT command means CPU id. > * But, Exynos4212 has only one secondary CPU so second parameter > * isn't used for informing secure firmware about CPU id. > @@ -50,7 +57,7 @@ static int exynos_set_cpu_boot_addr(int cpu, unsigned long boot_addr) > > boot_reg = sysram_ns_base_addr + 0x1c; > > - if (!soc_is_exynos4212()) > + if (!soc_is_exynos4212() && !soc_is_exynos3250()) > boot_reg += 4*cpu; > > __raw_writel(boot_addr, boot_reg); > Reviewed-by: Tomasz Figa Best regards, Tomasz