Re: [Celinux-dev] CELF Project Proposal- Refactoring Qi, lightweight bootloader

[Wolfgang Denk <wd@denx.de>]

Dear Andy Green,

In message <4B2FD7DB.10008@warmcat.com> you wrote:
> 
> >> Another big problem with U-Boot was the inability to update the
> >> bootloader from the Linux world.  Instead the bootloader was treated
...
> I was talking about GTA02 specifically here, it was (and still is AFAIK) 
> only updateable by DFU for the bootloader.  We had kernels with soft ECC 
> that differed from the ECC / bad block marking generated and used by the 
> s3c2442 NAND hardware unit.  If U-Boot wrote it, it could at least read 
> it again.  So DFU was / is the only official way to update GTA02 bootloader.

This only means that the ports of U-Boot and Linux to that hardware
were inconsistent, which means that at least one of them can be
considered broken. [And I'm tempted to add that this might eventually
be a consequence of the fact that all this work was done without ever
getting in touch with the U-Boot community. Likewise, no code or
fixes have been contributed back into mainline.]


I think it's unfair to blame U-Boot for a poor on incorrect
implementation of the NAND driver on this specific hardware.


Best regards,

Wolfgang Denk

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