NAND user space program

Sergei Poselenov sposelenov at emcraft.com
Wed Jun 12 03:26:43 PDT 2019


Hello JH,

Going back to your original question, if your intention is to write a
Linux image to a raw (ie without filesystem) NAND partition, so the
bootloader (eg U-Boot) could be able to read the kernel image from
there, then the suggestion is to use the mtd-utils "nandwrite", which
is able to deal with the NAND bad blocks.

Regards,
Sergei

On Wed, 2019-06-12 at 09:01 +1000, JH wrote:
> Thanks Richard, can the Linux zImage or rootfs load to NAND directly
> via JTAG or serial line?
> 
> Thank you.
> 
> Kind regards,
> 
> - JH
> 
> On 6/11/19, Richard Weinberger <richard.weinberger at gmail.com> wrote:
> > On Tue, Jun 11, 2019 at 12:20 PM JH <jupiter.hce at gmail.com> wrote:
> > > Hi,
> > > 
> > > In NOR flash, access flash in user space is integrated to the
> > > Linux
> > > system read / write, is it the same story for NAND flash? I
> > > installed
> > > mtd-utils, but not sure if I can still use Linux system read /
> > > write
> > > to access NAND flash or not.
> > 
> > Well, Linux exposes both NOR and NAND flashes as MTD.
> > So there shouldn't be much difference.
> > But make sure you can deal with specialties of NAND, such as
> > bad blocks.
> > 
> > 
> > --
> > Thanks,
> > //richard
> > 
> 
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