On Mon, Aug 11, 2014 at 12:55:43PM -0600, Stephen Warren wrote: > On 08/11/2014 12:42 PM, Jeroen Hofstee wrote: > >Hello Stephen. > > > >On 11-08-14 20:04, Stephen Warren wrote: > >>On 08/11/2014 11:51 AM, Jeroen Hofstee wrote: > >>>Hello Stephan > >>> > >>>On 11-08-14 18:53, Stephen Warren wrote: > >>>>On 08/10/2014 10:53 AM, Jeroen Hofstee wrote: > >>>>>Hello Stephan, > >>>>> > >>>>>On 10-08-14 05:11, Stephen Warren wrote: > >>>>>>The entire point of this series is to prevent distros from having to > >>>>>>install bootloader-specific boot configuration files. > >>>>> > >>>>>I fail to see why this is something to pursue. Since the distro knows > >>>>>the boot path, why should u-boot be polling all possible options? > >>>> > >>>>This patch series allows U-Boot to find the OS and boot it. U-Boot is > >>>>searching for some kind of boot configuration file. > >>>> > >>>>This part of the process is the same as the BIOS searching all known > >>>>possible boot devices for a partition marked bootable, and with a > >>>>valid MBR. Or, it's the same as UEFI searching all possible boot > >>>>devices for whatever config file or boot binary is mandated by UEFI. > >>> > >>>Not in my mind, I am not against scanning the possible > >>>boot devices, on the contrary, I am trying to add booting > >>>the userland from usb instead of mmc for the rpi_b. > >> > >>The following will tell U-Boot to only search USB for extlinux.conf. > >> > >>setenv boot_targets usb > >> > >>(you can put this into /uEnv.txt on the SD card if you want to avoid > >>editing U-Boot source code to make this change; there's no persistent > >>environment storage on the Pi, at least at the moment) > >> > > > >I am going to give up soon commenting on this. It is > >applied anyway. My point is that I am making an image > >without an extlinux.conf, I know that, I could tell it in a > >boot.scr but yet this scripts now insist on searching for > >extlinux.conf. > > That's because you are an individual crafting your own installation > manually. The whole point of this feature is to allow distros to be > completely generic, i.e. they work in the exact same way on all HW > (that supports this feature, which hopefully will be most ARM boards > soon...).
I suspect the problem here is that you're mentally thinking "... Linux ..." and Jeroen's use case is mainly "... Not Linux ...". So this is a step in the right direction, which is why I applied it, but it may need a little tweaking to make it less noisy to support *BSD or VxWorks or ..., which are real users out there for U-Boot and we don't want to forget them. -- Tom
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