From mboxrd@z Thu Jan 1 00:00:00 1970 From: pali.rohar@gmail.com (Pali =?utf-8?q?Roh=C3=A1r?=) Date: Wed, 26 Nov 2014 16:27:57 +0100 Subject: n900: kernel cmdline from bootloader in DT mode In-Reply-To: <20141126152159.GA26123@amd> References: <201411261354.33652@pali> <201411261436.42166@pali> <20141126152159.GA26123@amd> Message-ID: <201411261627.57241@pali> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 -- 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: