Re: OMAP baseline test results for v3.8-rc4

[Tony Lindgren <tony@atomide.com>]

* 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@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);