Hi On Fri, Nov 27, 2015 at 9:44 AM, Michael Trimarchi <michael@xxxxxxxxxxxxxxxxxxxx> wrote: > Hi > > On Fri, Nov 27, 2015 at 9:38 AM, Pali Rohár <pali.rohar@xxxxxxxxx> wrote: >> On Thursday 26 November 2015 12:39:30 Tony Lindgren wrote: >>> Just to explore options.. How about make a minimal device driver that >>> just loads the atags blob from /lib/firmware and then shows it in >>> /proc/atags? Of course some checking on the atags should be done by >>> the driver.. >> >> And who can dynamically create that blob file in /lib/firmware? If >> kernel does not export those atags (somehow) from bootloader, then >> userspace is not able to create that blob... cyclic problem. >> > > Are those atags from bootloader fix or they change device by device. If they > are fixed they can be included in some firmware and get from the disk. > Sorry, miss the second part of email ;) Michael > Michael > >> So no, problem is that bootloader provides via custom atags dynamic >> information like: boot reason (how was device started, by rtc alarm? by >> reboot? by usb charger? by power button?), boot mode (should be enter >> into firmware update mode?, is this normal boot mode?), ... and those >> information are needed for some proprietary software (e.g. firmware >> upgrade/flash) but also by any other open source applications (based on >> usb charger we enter different runlevel -- for just only charging >> device). >> >> -- >> Pali Rohár >> pali.rohar@xxxxxxxxx >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-omap" in >> the body of a message to majordomo@xxxxxxxxxxxxxxx >> More majordomo info at http://vger.kernel.org/majordomo-info.html -- | Michael Nazzareno Trimarchi Amarula Solutions BV | | COO - Founder Cruquiuskade 47 | | +31(0)851119172 Amsterdam 1018 AM NL | | [`as] http://www.amarulasolutions.com | -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
