* Pali Rohár <pali.rohar@xxxxxxxxx> [141126 15:40]: > > With enabled CONFIG_ARM_APPENDED_DTB=y file /proc/atags is > missing. OK I guess it should not be needed for DT based booting. > > The build_tag_list() should parse ATAG_REVISION and then > > parse_tag_revision() should copy it to system_rev. Maybe try > > adding some printks to see if those functions get called? > > Now I see... Problem is that build_tag_list() is called from > convert_to_tag_list() which is called from setup_machine_tags() > which is called from setup_arch() only if setup_machine_fdt() > call fails. And it fails for *non* DT boot. You can check this > chain too. 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. 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. Regards, Tony -- 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
