Hi Lee, On Mon, Nov 26, 2012 at 1:00 AM, Lee Jones <lee.jo...@linaro.org> wrote: > Hi Simon, > >> On Tue, Nov 20, 2012 at 6:33 AM, Lee Jones <lee.jo...@linaro.org> wrote: >> > Boottime is a tool which can be used for full system booting time >> > measurement. Bootloader boot time is passed to the kernel component >> > though ATAGS. The kernel-side driver then uses this information to >> > provide full system boot time diagnostics though debugfs. >> > >> > Based heavily on the original driver by Jonas Aaberg. >> > >> > Signed-off-by: Lee Jones <lee.jo...@linaro.org> >> >> Did you take a look at bootstage, which seems at least on the surface >> to provide a similar mechanism? This passes the information to the >> kernel through a device tree, or worse case a 'stash area'. > > I didn't see this before. > > I don't see the kernel counterpart, did it make it upstream?
It was sent upstream, just for a feeler, but before U-Boot support was mainlined and before we had a way to deal with the non-fdt case. That is now implemented and in mainline, although it has not yet gone out in a release (should be Jan 2013). So I was planning to address that again in the kernel at some point. > > Wolfgang, didn't you know about bootstage? This could have saved > us a great deal of time. > > Kind regards, > Lee > > -- > Lee Jones > Linaro ST-Ericsson Landing Team Lead > Linaro.org │ Open source software for ARM SoCs > Follow Linaro: Facebook | Twitter | Blog Regards, Simon _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
