[U-Boot] powerpc/mpc85xx: Increase image size

[York Sun]

On 10/16/2013 01:41 PM, Scott Wood wrote:
> On Wed, 2013-10-16 at 13:38 -0700, York Sun wrote:
>> On 10/16/2013 01:33 PM, Scott Wood wrote:
>>> On Wed, 2013-10-16 at 13:32 -0700, York Sun wrote:
>>>> On 10/16/2013 01:29 PM, Scott Wood wrote:
>>>>> On Wed, 2013-10-16 at 13:22 -0700, York Sun wrote:
>>>>>> On 10/16/2013 12:37 PM, Scott Wood wrote:
>>>>>>> On Wed, 2013-10-16 at 10:41 -0700, York Sun wrote:
>>>>>>>> Are SPL and TPL boot methods immune from the size issue here?
>>>>>>>
>>>>>>> Sort of.  We still need to fit inside existing partition tables.
>>>>>>>
>>>>>>
>>>>>> PBL boot will be broken if the image size is bigger than 512KB, right?
>>>>>
>>>>> It has to be even smaller than that, to make room for early data.
>>>>>
>>>>
>>>> So if we go with 768KB, do we have to convert all PBL boot to SPL boot?
>>>
>>> Only the targets that need the extra space.
>>>
>>
>> We have T4, B4 and corenet_ds using PBL boot. They most likely will
>> exceed the 512KB soon, if not yet. It maybe easier to change all of them
>> togther, than one by one.
> 
> There's no reason to change them all at once.  It doesn't make anything
> easier; it just means you have to do a bunch of testing all at once, and
> force a change in procedure for users on boards where it otherwise would
> not have been required.

You are right here.

> 
> Plus, the 512K limit is for e500v2-based chips.  Newer chips have CPC
> for SRAM which is larger than 512K.
> 

Hmm? T4240 has 512KB CPC.

York