NAND user space program

JH jupiter.hce at gmail.com
Thu Jun 13 03:41:59 PDT 2019


Thanks Sergei for the clarification, good to know that mtd-utils  has
already handled bad blacks, I don't need to worry about it.

Kind regards,

- JH

On 6/12/19, Sergei Poselenov <sposelenov at emcraft.com> wrote:
> 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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>>
>
>



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