[poky] [PATCH 3/4] beagleboard: upgrade the kernel to 3.10.x

[Bruce Ashfield]

On 13-09-10 04:16 AM, Bruce Ashfield wrote:
> On 13-09-10 04:08 AM, Anders Darander wrote:
>> * Bruce Ashfield <bruce.ashfield at windriver.com> [130906 22:59]:
>>> From: Liming Wang <liming.wang at windriver.com>
>>
>>> In 3.10.x linux kernel, uImage can't be compiled by default. But zImage
>>> has been supported by the latest u-boot, so use zImage as the default
>>> kernel
>>> image file. In u-boot command, use "bootz", instead of "bootm", to
>>> boot the kernel.
>>
>> NAK. (At least based on the info given above regarding the uImage to
>> zImage transfer).
>>
>> I missed this patch earlier...
>>
>> What's the issue with uImage on 3.10.x?
>> I'm running a kernel.org 3.10.x using linux-yocto-custom just fine here
>> (although for another board).
>>
>> I suspect the issue (that I guess Liming had), is due to the powerpc
>> being mixed into his build. (Bruce replied on the oe-core list to a
>> path which corrected the path to the DTS).
>
> No, that wasn't the issue. uImage requires a LOADADDR in many cases and
> that isn't currently encoded in the machine configs.

I forgot to add that if QA shows issues with this change, then obviously,
I'll revisit the image format default.

Bruce

>
> zImage works fine, want to expand our coverage with the reference boards,
> so no, there's no NAK of this. It's fine as is.
>
> Other layers and BSPs are free to use uImage, just as this reference
> is free to use the zImage.
>
> Bruce
>
>>
>> Cheers,
>> Anders
>>
>>> And add device tree files to support dtb in latest kernel.
>>
>>> Signed-off-by: Liming Wang <liming.wang at windriver.com>
>>> Signed-off-by: Bruce Ashfield <bruce.ashfield at windriver.com>
>>> ---
>>>   meta-yocto-bsp/conf/machine/beagleboard.conf |    5 +++--
>>>   1 file changed, 3 insertions(+), 2 deletions(-)
>>
>>> diff --git a/meta-yocto-bsp/conf/machine/beagleboard.conf
>>> b/meta-yocto-bsp/conf/machine/beagleboard.conf
>>> index 5f4c55a..dd0c222 100644
>>> --- a/meta-yocto-bsp/conf/machine/beagleboard.conf
>>> +++ b/meta-yocto-bsp/conf/machine/beagleboard.conf
>>> @@ -29,9 +29,10 @@ EXTRA_IMAGECMD_jffs2 = "-lnp "
>>>   SERIAL_CONSOLE = "115200 ttyO2"
>>
>>>   PREFERRED_PROVIDER_virtual/kernel ?= "linux-yocto"
>>> -PREFERRED_VERSION_linux-yocto ?= "3.4%"
>>> +PREFERRED_VERSION_linux-yocto ?= "3.10%"
>>
>>> -KERNEL_IMAGETYPE = "uImage"
>>> +KERNEL_IMAGETYPE = "zImage"
>>> +KERNEL_DEVICETREE = "${S}/arch/powerpc/boot/dts/omap3-beagle.dts
>>> ${S}/arch/powerpc/boot/dts/omap3-beagle-xm.dts"
>>
>>>   SPL_BINARY = "MLO"
>>>   UBOOT_SUFFIX = "img"
>