Re: [U-Boot] FIT image for falcon boot

2017-04-05 Thread Simon Glass 
Hi York,

On 31 March 2017 at 22:49, york sun  wrote:
> On 03/31/2017 09:21 PM, Simon Glass wrote:
>> Hi York,
>>
>> On 23 March 2017 at 20:06, york sun  wrote:
>>> Simon,
>>>
>>> I made it work. A patch set will be sent later (much later) after I
>>> clean up and finish the project on hand.
>>
>> OK, sounds good!
>>
>> IMO some of the motivation for falcon boot is U-Boot running slowly
>> with the cache off :-)
>
> My target is to boot up Linux under 800ms. I have achieved that but with
> minimum Linux drivers loaded. I don't have much time budge for U-Boot.
> Falcon boot cuts U-Boot time down to ~400ms (including loading FIT
> image). I have cache enabled after loading the trusted firmware (our
> implementation) as soon as the DDR is ready.

Yes that is a pretty tight limit - sounds like you have things humming nicely!

Regards,
Simon
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Re: [U-Boot] FIT image for falcon boot

2017-03-31 Thread york sun 
On 03/31/2017 09:21 PM, Simon Glass wrote:
> Hi York,
>
> On 23 March 2017 at 20:06, york sun  wrote:
>> Simon,
>>
>> I made it work. A patch set will be sent later (much later) after I
>> clean up and finish the project on hand.
>
> OK, sounds good!
>
> IMO some of the motivation for falcon boot is U-Boot running slowly
> with the cache off :-)

My target is to boot up Linux under 800ms. I have achieved that but with 
minimum Linux drivers loaded. I don't have much time budge for U-Boot. 
Falcon boot cuts U-Boot time down to ~400ms (including loading FIT 
image). I have cache enabled after loading the trusted firmware (our 
implementation) as soon as the DDR is ready.

York

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Re: [U-Boot] FIT image for falcon boot

2017-03-31 Thread Simon Glass 
Hi York,

On 23 March 2017 at 20:06, york sun  wrote:
> Simon,
>
> I made it work. A patch set will be sent later (much later) after I
> clean up and finish the project on hand.

OK, sounds good!

IMO some of the motivation for falcon boot is U-Boot running slowly
with the cache off :-)

>
> York
>
> On 03/22/2017 04:40 PM, york@nxp.com wrote:
>> Guys,
>>
>> You were discussing loading FIT image for falcon boot about a year ago.
>> I wonder if there is any follow-up on this topic?
>>
>> York
>>
>

Regards,
Simon
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Re: [U-Boot] FIT image for falcon boot

2017-03-23 Thread york sun 
Simon,

I made it work. A patch set will be sent later (much later) after I 
clean up and finish the project on hand.

York

On 03/22/2017 04:40 PM, york@nxp.com wrote:
> Guys,
>
> You were discussing loading FIT image for falcon boot about a year ago.
> I wonder if there is any follow-up on this topic?
>
> York
>

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[U-Boot] FIT image for falcon boot

2017-03-22 Thread york sun 
Guys,

You were discussing loading FIT image for falcon boot about a year ago. 
I wonder if there is any follow-up on this topic?

York
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