Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753428Ab2KTQQp (ORCPT ); Tue, 20 Nov 2012 11:16:45 -0500 Received: from mail-bk0-f46.google.com ([209.85.214.46]:51732 "EHLO mail-bk0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753242Ab2KTQQo (ORCPT ); Tue, 20 Nov 2012 11:16:44 -0500 Date: Tue, 20 Nov 2012 16:16:38 +0000 From: Lee Jones To: Kyungmin Park Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux@arm.linux.org.uk, linus.walleij@stericsson.com, jonas.aberg@stericsson.com, will.deacon@arm.com, arnd@arndb.de, Mian Yousaf Kaukab Subject: Re: [PATCH 1/2] Boottime: A tool for automatic measurement of kernel/bootloader boot time Message-ID: <20121120161638.GD28265@gmail.com> References: <1352973847-21605-1-git-send-email-lee.jones@linaro.org> <1352973847-21605-2-git-send-email-lee.jones@linaro.org> <20121115112543.GC21682@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20121115112543.GC21682@gmail.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1145 Lines: 29 > > > +/* for automatic boot timing testcases */ > > > +#define ATAG_BOOTTIME 0x41000403 > > Where can I refer this ATAG usage? can you point out the reference URL > > or patches? > > I assumed this would be in Mainline u-boot, but apparently not. > On closer inspection of the internal ST-Ericsson u-boot, this > functionality appears to be provided by patches which currently > exist as delta. So in essence, the bootloader you use will have > to be patched in a similar way for you to retrieve information > surrounding bootloader boot times. > > And there was me thinking it was magic. ;) Okay, so I'm going through the motions of upstreaming this magic now. Please see the link below for reference: http://marc.info/?l=u-boot&m=135342273317337&w=2 -- Lee Jones Linaro ST-Ericsson Landing Team Lead Linaro.org │ Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog -- 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/