[NAND] Multi-page OOB reads

Joshua Wise joshua at joshuawise.com
Sat Nov 29 17:55:32 EST 2003


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Hi all,

I'm on an iPAQ h1910 board working with a Samsung NAND 16MiB 3,3V chip 
(0xec/0x73).

I have a few questions about reading from the out of band area, namely with 
reading multiple pages. First off, by reading the spec sheet for this flash 
chip, I don't see any information about multiple pages of OOB data. Would it 
be called something else?

Secondly, I don't see any code in nanddump or nandwrite to deal with multiple 
pages of OOB data. Should there be?

Finally, I'm looking through drivers/mtd/nand/nand.c, and I'm looking at the 
particular block that begins with the comment:
        /*
         * Read the data, if we read more than one page
         * oob data, let the device transfer the data !
         */
I see how there's a read command before that. Should that be inside the loop 
if we're going to modify col?

Thanks,
/joshua

- -- 
Joshua Wise | www.joshuawise.com
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Quote       | <lilo> I akilled *@* by mistake
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