[U-Boot] [PATCH] dfu: dfu_sf: Use the erase sector size for erase operations

[Lukasz Majewski]

Hi Tom,

> On Mon, Oct 19, 2015 at 6:07 AM, Lukasz Majewski
> <l.majewski at samsung.com> wrote:
> >> On Tue, Sep 22, 2015 at 4:46 AM, Lukasz Majewski
> >> <l.majewski at samsung.com> wrote:
> >> >> From: Fabio Estevam <fabio.estevam at freescale.com>
> >> >>
> >> >> SPI NOR flashes need to erase the entire sector size and we
> >> >> cannot pass any arbitrary length for the erase operation.
> >> >>
> >> >> To illustrate the problem:
> >> >>
> >> >> Copying data from PC to DFU device
> >> >> Download    [=========================] 100%       478208 bytes
> >> >> Download done.
> >> >> state(7) = dfuMANIFEST, status(0) = No error condition is
> >> >> present state(10) = dfuERROR, status(14) = Something went
> >> >> wrong, but the device does not know what it was
> >> >> Done!
> >> >>
> >> >> In this case, the binary has 478208 bytes and the M25P32 SPI NOR
> >> >> has an erase sector of 64kB.
> >> >>
> >> >> 478208  = 7 entire sectors of 64kiB + 19456 bytes.
> >> >>
> >> >> Erasing the first seven 64 kB sectors works fine, but when
> >> >> trying to erase the remainding 19456 causes problem and the
> >> >> board hangs.
> >> >>
> >> >> Fix the issue by always erasing with the erase sector size.
> >> >>
> >> >> Signed-off-by: Fabio Estevam <fabio.estevam at freescale.com>
> >>
> >> > Acked-by: Lukasz Majewski <l.majewski at samsung.com>
> >> >
> >> > Applied to u-boot-dfu tree.
> >> >
> >> > Thanks for your work.
> >> >
> >> > I'm looking forward for more patches :-)
> >>
> >> Any chance of getting this one applied for 2015.10?
> >
> > Probably not :-( since we have now -rc5.
> >
> > I plan to send pull request in the next merge window.
> >
> > My apologies, since I was busy with ELCE2015 preparation, so I've
> > forgotten to send early PR to Marek.
> 
> This has been acked in September and it is a very trivial change, why
> not include it?
> 

Two patches to be applied as fixes for dfu subsystem.

https://patchwork.ozlabs.org/patch/520827/
https://patchwork.ozlabs.org/patch/521575/


-- 
Best regards,

Lukasz Majewski

Samsung R&D Institute Poland (SRPOL) | Linux Platform Group