From mboxrd@z Thu Jan  1 00:00:00 1970
From: tony@atomide.com (Tony Lindgren)
Date: Tue, 22 Jan 2013 10:23:32 -0800
Subject: OMAP baseline test results for v3.8-rc4
In-Reply-To: <50FE9692.2090001@mimc.co.uk>
References: <alpine.DEB.2.00.1301202136290.31667@utopia.booyaka.com>
 <50FD6D8D.6030106@mimc.co.uk> <20130121164510.GA18905@kahuna>
 <f36acfaf128c4844b8f696ea4440e253@DLEE74.ent.ti.com>
 <20130121182419.GE10020@beef> <87boci9str.fsf@dell.be.48ers.dk>
 <alpine.DEB.2.00.1301220213390.25789@utopia.booyaka.com>
 <50FE66AC.2090306@mimc.co.uk>
 <B5906170F1614E41A8A28DE3B8D121433ECF3DD3@DBDE01.ent.ti.com>
 <50FE9692.2090001@mimc.co.uk>
Message-ID: <20130122182331.GO22517@atomide.com>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

* Mark Jackson <mpfj-list@mimc.co.uk> [130122 05:46]:
> On 22/01/13 13:32, Bedia, Vaibhav wrote:
> 
> <snip>
> 
> > Following works for me:
> > 
> > Kernel
> > ===
> > git checkout next-20130122
> > make distclean
> > make omap2plus_defconfig
> > <Enable the appended DTB related options via menuconfig>
> > make -j7
> > cat arch/arm/boot/zImage arch/arm/boot/dts/am335x-bone.dtb > arch/arm/boot/zImage-dtb.am335x-bone
> > mkimage -A arm -O linux -C none -T kernel -a 0x80008000 -e 0x80008000 -n 'Linux' -d arch/arm/boot/zImage-dtb.am335x-bone arch/arm/boot/uImage-dtb.am335x-bone
> > 
> > U-Boot
> > ===
> > Built from v2013.01
> 
> <snip>
> 
> > A dumb question... in your case what's the bootargs set? Note that the mainline
> > kernel for AM335x doesn't have MMC support yet and the default bootargs is set to
> > rootfs on MMC.
> 
> Yes ... I'm trying to boot from a rootfs on MMC:-
> 
> Kernel command line: console=ttyO0,115200n8 earlyprintk debug root=/dev/mmcblk0p2 ro rootfstype=ext2
> rootwait
> 
> But I should get *something* from the kernel before it starts trying to access the rootfs ?

Here's something Kevin fixed but did not send it out before going to
a vacation. Can you give it a try with earlyprintk enabled?

Note that this does not help with no output early on, that sounds
like a bug configuring the DEBUG_LL port somewhere.

Regards,

Tony



From: Kevin Hilman <khilman@deeprootsystems.com>
Date: Tue, 15 Jan 2013 14:12:24 -0800
Subject: [PATCH] Fix omap_serial as module with debug_ll and earlyprintk

Otherwise we can race with the earlyconsole getting turned off
which can cause a non-booting system with earlyprintk enabled.

[tony at atomide.com: updated description]
Signed-off-by: Tony Lindgren <tony@atomide.com>

---

Kevin, can I add your Signed-off-by to this one?

--- a/arch/arm/mach-omap2/omap_device.c
+++ b/arch/arm/mach-omap2/omap_device.c
@@ -1298,4 +1298,4 @@ static int __init omap_device_late_init(void)
 	bus_for_each_dev(&platform_bus_type, NULL, NULL, omap_device_late_idle);
 	return 0;
 }
-omap_late_initcall(omap_device_late_init);
+late_initcall_sync(omap_device_late_init);