[Buildroot] [PATCH] pandaboard_defconfig: bump u-boot to 2015.10 and kernel to 4.3

Peter Korsgaard peter at korsgaard.com
Wed Dec 30 19:04:59 UTC 2015


>>>>> "Thomas" == Thomas Petazzoni <thomas.petazzoni at free-electrons.com> writes:

Hi,

> Hello,
> On Tue, 29 Dec 2015 14:00:21 +0100, Thomas Petazzoni wrote:

>> > That was my first attempt, but it didn't work. The ROM code from OMAP
>> > processors (and I think also Sitara processors) need the SD card to be
>> > formatted with a special geometry in the partition table. That's the reason
>> > of the script above. I did not find any option in the genimage tool to
>> > configure thinks like sectors and cylinders. So I do not see an easy way to
>> > generate a sdcard image in this case. What do you think?
>> 
>> Ah ok. I don't know if genimage can handle such scenarios. I am Cc'ing
>> Vivien Didelot, who did quite a bit of work on genimage in Buildroot. I
>> think I remember he telling me that he had a working genimage
>> configuration for the BeagleBone, which has, AFAIK, the same
>> requirements as the PandaBoard in terms of geometry and all.

> I found Vivien's initial patch for the BeagleBone:

>   http://lists.busybox.net/pipermail/buildroot/2015-March/122406.html

> Though I don't see where it handles the specific geometry requirements.
> Maybe those requirements have been relaxed in the AM335x compared to
> the OMAP4 ?

Yes, I believe so, I atleast haven't seen the issuess with more recent
TI components.

The boot problems on omap3 (and 4?) were afaik a combination of boot rom
issues/erratas (and therefore depending on chip revisions) and sw
limitations (E.G. early xloader versions had various limitations).

https://groups.google.com/forum/#!topic/beagleboard/ro5k5r4Cuq4
http://elinux.org/Panda_How_to_MLO_%26_u-boot

I do have an early pandaboard somewhere that I can try to dig out and do
some tests with.

-- 
Bye, Peter Korsgaard


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