From mboxrd@z Thu Jan 1 00:00:00 1970 From: pali.rohar@gmail.com (Pali =?utf-8?q?Roh=C3=A1r?=) Date: Sat, 24 Jan 2015 15:01:19 +0100 Subject: n900: kernel cmdline from bootloader in DT mode In-Reply-To: <201411261627.57241@pali> References: <201411261354.33652@pali> <20141126152159.GA26123@amd> <201411261627.57241@pali> Message-ID: <201501241501.20009@pali> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Wednesday 26 November 2014 16:27:57 Pali Roh?r wrote: > On Wednesday 26 November 2014 16:22:00 Pavel Machek wrote: > > On Wed 2014-11-26 14:36:42, Pali Roh?r 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 Roh?r pali.rohar at gmail.com -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 198 bytes Desc: This is a digitally signed message part. URL: