NAND raw read, writes from kernel(2.6.35).

Siva naga kishore Kampili

Hi All,

I am working on Linux kernel 2.6.35(Gingerbread). I want to write data to some location on the NAND from the Kernel. So i am using cutecom to give commands, nandump to read, nandwrite to write to NAND, but it is giving error "command not found". By surfing i found out that, i have to enable mtd-utils in Kernel image. Can any one tell me how to enable the mtd-utils package in the kernel.

I didn't find any configuration to enable this option.

BR
Kishore

over 10 years ago

0 Margarita Gashova over 10 years ago

TI__Guru* 80190 points

Hello,

You could check here:

processors.wiki.ti.com/.../MTD_Utilities

Best Regards,
Margarita

0 Cvetolin Shulev-XID over 10 years ago

TI__Guru 65405 points

Hi Kishore,

The nanddump and nandwrite MTD commands are not incorporated in the Linux kernel by default and this explains why you observe the "command not found" message. The MTD Utilities are a collection of tools that allow the user to interact with the MTD subsystem in the kernel to perform operations on Flash devices. Therefore I suggest you a tutorial about how to download, compile and use MTD utilities:

Tsvetolin Shulev

0 Siva naga kishore Kampili over 10 years ago in reply to Cvetolin Shulev-XID

Intellectual 500 points

Hi,

I have gone through the above links and understood that we have to add mtd-utils. By these utilities i am privileged to "nandwrite" command. But the documents is saying that we can write JFFS2 or YAFFS2 images to nand but not the raw bytes.
Command - "nandwrite - Write an input file (i.e. JFFS2 or YAFFS2 image) to the NAND Flash device"

Is there is any way to write nand write with some raw bytes not the JFFS2 or YAFFS2 images ?

BR
Kishore

0 Ravikiran HV over 10 years ago in reply to Siva naga kishore Kampili

Mastermind 8715 points

Hi Kishore,

You may want to check this MTD Nand Guide.
kernel.org/.../index.html

As per my understanding, using nandwrite we should be able to write any data to nand, provided we pass other aurguments related to nand properties correctly.

If you still facing problem, can you attach logs ?

0 Siva naga kishore Kampili over 10 years ago in reply to Ravikiran HV

Intellectual 500 points

Hi Ravi ,

I didn't try to write raw data by the above commands. I have followed below link to write or erase the NAND raw data and it solved my problem.

www.opensourceforu.com/.../working-with-mtd-devices

BR
Kishore

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NAND raw read, writes from kernel(2.6.35).