[U-Boot] Tegra board problems

[Stephen Warren]

On 11/24/2014 09:03 PM, Simon Glass wrote:
> Hi,
>
> I'm a bit messed up with my testing now.
...
> 2. beaver: I cannot get mainline U-Boot to boot a kernel. In fact
> 'part list mmc 0' just prints an error:
>
> ## Unknown partition table
>
> It is getting a partition ID of 0. Is there something wrong with
> Beaver's mmc support in mainline?

I just built commit 2a82ec77d27e "Prepare v2015.01-rc2" and both eMMC 
and SD appear to work.

Do you have a valid partition table on the eMMC? If you installed L4T 
there rather than partitioning it yourself, note that L4T uses a 
non-standard "tegra PT" partition table format. Some newer versions of 
L4T also include a backup GPT that makes some of the partitions 
available in a more standard way, but IIUC there's never a primary GPT. 
I don't recall if the version of L4T for Beaver was new enough to do 
even that though. Your best bet is to use standard tools to install a 
complete GPT and then install a Linux distro on top of that.

Tegra30 (Beaver) # part list mmc 0

Partition Map for MMC device 0  --   Partition Type: EFI

Part	Start LBA	End LBA		Name
	Attributes
	Type GUID
	Partition GUID
   1	0x00000800	0x01da97ff	""
	attrs:	0x0000000000000000
	type:	ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
	guid:	ac3c736e-a29b-43d4-9819-4cf4fd84c3b0

Tegra30 (Beaver) # part list mmc 1

Partition Map for MMC device 1  --   Partition Type: EFI

Part	Start LBA	End LBA		Name
	Attributes
	Type GUID
	Partition GUID
   1	0x00000022	0x003b9132	""
	attrs:	0x0000000000000000
	type:	ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
	guid:	b2f82cda-2535-4779-b467-094a210fbae7