Re: [meta-fsl-arm-extra][PATCH 1/2] u-boot-imx: update Congatec qmx6 support to bsp 4.0

[Eric Nelson <eric.nelson@boundarydevices.com>]

Hi Leo,

On 06/18/2013 08:58 AM, SARTRE Leo wrote:
> Le Tuesday 18 June 2013 17:39:15, Eric Nelson a écrit :
>> Hi Leo,
>
> Hi Eric,
>
>> This isn't an issue, it's a policy decision by Linaro because they
>> wanted to **force** SD card boot.
>>
>
> Ok, that was not very clear in their explanation that it comes from a policy
> decision...
>
>> This Linaro hack programs SPI-NOR to override the fuses.
>>
>> In other words, it too boots to SPI NOR.
>>
>
> Yes I know how the "sd card loader" works, I was using the same tricks
> on the Congatec board.
>

Cool.

>>>> I don't understand why you say that mainline U-boot cannot boot from
>>>> SPI NOR, but the old U-boot can.
>>>
>>> Maybe some bits of code maintained by Freescale were not pushed to the
>>> mainline of U-boot.
>>
>> Can you boot with an erased SPI-NOR and a U-Boot on SD card?
>>
>
> No, fuses are blown to select SPI NOR boot.
>

Got it. It looks like you're up and running from your earlier note.

The 0x400 thing can cause lots of confusion if switching between
the Freescale 2009.08 and main-line versions.

Regards,


Eric