From: "Pali Rohár" <pali.rohar@gmail.com>
To: Pavel Machek <pavel@ucw.cz>
Cc: Sebastian Reichel <sre@ring0.de>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
linux-omap@vger.kernel.org, Tony Lindgren <tony@atomide.com>,
aaro.koskinen@iki.fi, freemangordon@abv.bg
Subject: Re: n900: kernel cmdline from bootloader in DT mode
Date: Wed, 26 Nov 2014 16:27:57 +0100 [thread overview]
Message-ID: <201411261627.57241@pali> (raw)
In-Reply-To: <20141126152159.GA26123@amd>
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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
--
Pali Rohár
pali.rohar@gmail.com
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WARNING: multiple messages have this Message-ID (diff)
From: pali.rohar@gmail.com (Pali Rohár)
To: linux-arm-kernel@lists.infradead.org
Subject: n900: kernel cmdline from bootloader in DT mode
Date: Wed, 26 Nov 2014 16:27:57 +0100 [thread overview]
Message-ID: <201411261627.57241@pali> (raw)
In-Reply-To: <20141126152159.GA26123@amd>
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
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next prev parent reply other threads:[~2014-11-26 15:28 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-26 12:54 n900: kernel cmdline from bootloader in DT mode Pali Rohár
2014-11-26 12:54 ` Pali Rohár
2014-11-26 13:28 ` Pavel Machek
2014-11-26 13:28 ` Pavel Machek
2014-11-26 13:36 ` Pali Rohár
2014-11-26 13:36 ` Pali Rohár
2014-11-26 15:22 ` Pavel Machek
2014-11-26 15:22 ` Pavel Machek
2014-11-26 15:27 ` Pali Rohár [this message]
2014-11-26 15:27 ` Pali Rohár
2015-01-24 14:01 ` Pali Rohár
2015-01-24 14:01 ` Pali Rohár
2014-11-26 23:25 ` Pali Rohár
2014-11-26 23:25 ` Pali Rohár
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