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 07:27 AM, SARTRE Leo wrote:
>  > If you have your boot pins (or fuses) correctly setup and flash it to
>  > the correct offset, it should just boot, no?
>  >
>
> When I try to flash a mainline U-boot (that works when I write it in SD
> card)
> into the SPI NOR, the board doesn't boot.
> The binary that I flash is a non-padded Uboot and I place it at the
> beggining
> of the SPI NOR.
> It seems that the same issue occurs with the sabrelite board (see
> https://wiki.linaro.org/Boards/MX6QSabreLite).
>

This isn't an issue, it's a policy decision by Linaro because they
wanted to **force** SD card boot.

This Linaro hack programs SPI-NOR to override the fuses.

In other words, it too boots to SPI NOR.

>  > 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?

If so, then your fuses are blown to select SD card boot.

Regards,


Eric