On Friday 28 November 2014 21:27:19 Tony Lindgren wrote: > * Pali Rohár <pali.rohar@xxxxxxxxx> [141127 03:34]: > > On Thursday 27 November 2014 02:12:04 Tony Lindgren wrote: > > > Thinking about this probably the best long term solution > > > is to pass optional board_revision in the kernel cmdline > > > that can be parsed early and copied to system_rev > > > variable. > > > > Not possible. Our bootloader is closed & proprietary. I > > tried to replace it with u-boot I was not able to do that. > > So we will use that Nokia closed bootloader forever and it > > can provide data only in ATAG structure. > > I'm using just mainline u-boot flashed as kernel for nolo that > then loads the kernel. > > For passing the board revision using the pass through u-boot > is probably the best long term solution. U-boot can read the > ATAGs from nolo and modify the .dtb for the revision > information. > > Are you saying there are some issues with that? > > > > Or if you can think of some other way to get it, we can > > > set system_rev in pdata-quirks.c. > > > > > > Or maybe add some code to copy the ATAGs somewhere where > > > they are out of the way and don't conflict with the device > > > tree data? Then we can query ATAG_REVISION from > > > pdata-quirks.c and set system_rev. > > > > If we are able to read ATAG from pdata-quirks, then we can > > parse it there and fix problems... But I do not know if > > address of ATAG structure is available there... > > Are there other ATAGs needed beyond the ATAG_REVISION? > > Regards, > > Tony Ouch... Also ATAG_CMDLINE... which is probably reason why cmdline passed from bootloader is ignored. -- Pali Rohár pali.rohar@xxxxxxxxx
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