On Wednesday 26 November 2014 16:27:57 Pali Rohár wrote: > On Wednesday 26 November 2014 16:22:00 Pavel Machek wrote: > > On Wed 2014-11-26 14:36:42, Pali Rohár wrote: > > > On Wednesday 26 November 2014 14:28:01 Pavel Machek wrote: > > > > Hi! > > > > > > > > > for some unknown reasons when I compile kernel for > > > > > n900 in DT mode it ignore cmdline passed by > > > > > bootloader. When I comment > > > > > > > > > > CONFIG_ARM_APPENDED_DTB=y > > > > > > > > > > then it boots into legacy board mode and cmdline is > > > > > used from bootloader. > > > > > > > > > > When is problem? > > > > > > > > It seems to work for me, I'm booting using 0xffff, with > > > > attached config. > > > > > > > > Pavel > > > > > > Can you try to set some "root=something" into > > > CONFIG_CMDLINE and then add real "root=" param via > > > 0xffff? > > > > > > My problem is that I have specified ubifs mtd root in > > > CONFIG_CMDLINE and when I set correct root via bootloader > > > (from 0xffff or flasher-3.5) it is ignored and used only > > > what is specified in CONFIG_CMDLINE. > > > > CONFIG_ARM_ATAG_DTB_COMPAT=y > > CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER=y > > # CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND is not set > > CONFIG_CMDLINE="console=ttyO2,115200 console=tty" > > > > Um.. Internal commandline should be completely ignored for > > me. > > > > Do you have > > CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER? > > > > Pavel > > Yes, I have: > > CONFIG_ARM_APPENDED_DTB=y > CONFIG_ARM_ATAG_DTB_COMPAT=y > CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER=y > CONFIG_CMDLINE="...." > CONFIG_CMDLINE_FROM_BOOTLOADER=y Problem detected and fix patch here: https://lkml.org/lkml/2015/1/23/701 -- Pali Rohár pali.rohar@xxxxxxxxx
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