From mboxrd@z Thu Jan 1 00:00:00 1970 From: lee.jones@linaro.org (Lee Jones) Date: Tue, 20 Nov 2012 16:16:38 +0000 Subject: [PATCH 1/2] Boottime: A tool for automatic measurement of kernel/bootloader boot time In-Reply-To: <20121115112543.GC21682@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> Message-ID: <20121120161638.GD28265@gmail.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org > > > +/* 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