Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752224AbbKKH4E (ORCPT ); Wed, 11 Nov 2015 02:56:04 -0500 Received: from mailgw01.mediatek.com ([210.61.82.183]:60888 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1750773AbbKKH4B (ORCPT ); Wed, 11 Nov 2015 02:56:01 -0500 X-Listener-Flag: 11101 Message-ID: <1447228557.20886.10.camel@mtksdaap41> Subject: Re: [PATCH v5 4/5] ARM: dts: mt8135: enable basic SMP bringup for mt8135 From: Eddie Huang To: Kevin Hilman CC: Yingjoe Chen , "devicetree@vger.kernel.org" , Russell King - ARM Linux , , Arnd Bergmann , Tyler Baker , Stephen Boyd , lkml , Olof Johansson , Rob Herring , , Sascha Hauer , Matthias Brugger , "linux-arm-kernel@lists.infradead.org" Date: Wed, 11 Nov 2015 15:55:57 +0800 In-Reply-To: <7h1tbx1gjp.fsf@deeprootsystems.com> References: <1443799181-50409-1-git-send-email-yingjoe.chen@mediatek.com> <1443799181-50409-5-git-send-email-yingjoe.chen@mediatek.com> <1445843717.23888.1.camel@mtksdaap41> <1445859610.26723.4.camel@mtksdaap41> <1447135867.14454.9.camel@mtksdaap41> <7h1tbx1gjp.fsf@deeprootsystems.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.2.3-0ubuntu6 Content-Transfer-Encoding: 7bit MIME-Version: 1.0 X-MTK: N Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1876 Lines: 53 Hi Kevin, On Tue, 2015-11-10 at 17:16 -0800, Kevin Hilman wrote: > Hi Eddie, > > [...] > > > I check the log [0], > > Thanks for checking into this boot failure. > > > it seems first time mt8135-evbp1 boot to kernel > > shell successfully, then boot again. In the second time, mt8135 stay in > > fastboot mode, waiting host send boot image, then timeout. > > Actually, it never gets to a shell the first time. If you look closely, > the target reboots as soon as userspace starts. Look for the PYBOOT > line which says "finished booting, starting userspace" > > Later on, pyboot thinks it finds a root shell due to finding '#' > characters, but clearly it never got to a shell. > > > I download zImage and dtb in [1], and kernel run to shell successfully > > on my platform. > > Are you can you try using a ramdisk as well? You can use the pre-built > one here: > http://storage.kernelci.org/images/rootfs/buildroot/armel/rootfs.cpio.gz > Yes, I tried this ramdisk, and I can reproduce fail issue. > Please check my boot logs to see how I'm generating the boot.img file > (search for mkbootimg) with a kernel/dtb/ramdisk. It may be possible > that the kernel image size with a ramdisk is breaking some of the > assumptions in the fastboot mode. I've seen problems like this on other > platforms due to hard-coded sizes/addresses in the boot firmware. > MT8135 allocate 10MB for BOOT partition, but the test boot.img is 11MB, thus cause user space fail. I will prepare new firmware that extend BOOT partition to 16MB. and put new firmware on Howard's github. I will mail to you when I am ready.. Eddie Thanks -- 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/