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From: David Woodhouse <dwmw2@infradead.org>
To: manningc2@actrix.gen.nz
Cc: franck.fleter@netbricks.com, linux-mtd@lists.infradead.org
Subject: Re: Boot from NAND flash ???
Date: Mon, 13 May 2002 13:05:28 +0100	[thread overview]
Message-ID: <23974.1021291528@redhat.com> (raw)
In-Reply-To: <20020513101623.DE1A14235@tiger.actrix.co.nz>

manningc2@actrix.gen.nz said:
>  There are however two mechanisms to get around this: * Some people
> and micros implement a "data pump" state machine to extract an
> executable sequence from a NAND device.

The DiskOnChip Millennium does this. Which is how it's used for LinuxBIOS 
-- the device has 512 bytes of SRAM which is initialised from the flash at 
reset time, and that's just about enough to initialise the system and pull 
the rest of the startup code off the flash.

Note that the DiskOnChip 2000 has ROM instead of RAM, so you can't change 
the startup code from the PC BIOS extension header that it ships with, 
hence can't use it for such things.

--
dwmw2

  parent reply	other threads:[~2002-05-13 12:05 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-05-13  7:20 Boot from NAND flash ??? franck.fleter
2002-05-13  9:29 ` David Woodhouse
2002-05-13 10:11   ` Charles Manning
2002-05-13 11:18     ` Thomas Gleixner
2002-05-14  7:37       ` Charles Manning
2002-06-16  5:58         ` Der Herr Hofrat
2002-06-16  8:18           ` Charles Manning
2002-05-13 12:05     ` David Woodhouse [this message]
2002-05-15  9:14       ` Charles Manning
2002-05-15  9:21         ` David Woodhouse
  -- strict thread matches above, loose matches on Subject: below --
2002-05-13 16:47 Vadim Khmelnitsky
2000-01-12 11:50 ` Thomas Gleixner
2002-05-20  8:17   ` Charles Manning

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