From: Scott Wood <scottwood@freescale.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] Build u-Boot for NAND boot on i.MX53x platform
Date: Thu, 9 Feb 2012 14:41:46 -0600 [thread overview]
Message-ID: <4F342F8A.20704@freescale.com> (raw)
In-Reply-To: <201202100904.20333.manningc2@actrix.gen.nz>
On 02/09/2012 02:04 PM, Charles Manning wrote:
> On Wednesday 08 February 2012 17:16:10 Bud Miljkovic wrote:
>> Can someone clue me in how one goes about a NAND bootable u-Boot?
>>
>
> Bud
>
> You can't actually run uboot from NAND per se. The rom boot loader reads the
> image into ram where it runs.
>
> Based on my experience with omap - which uses a very similar sequence - you
> need to configure the uboot to run from the desired location in RAM. The
> resulting uboot.bin must then be mashed in whatever way is appropriate for
> loading with the rom boot loader and programmed to flash.
On some hardware, the boot rom/logic will only load a small piece from
RAM (e.g. 4K). U-Boot can be built with a prepended miniloader (SPL) to
fetch the main U-Boot image. The details (and whether this is supported
at all) depend on what board you're talking about. There is SPL support
for some i.MX chips -- not sure about i.MX53x.
-Scott
next prev parent reply other threads:[~2012-02-09 20:41 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-08 4:16 [U-Boot] Build u-Boot for NAND boot on i.MX53x platform Bud Miljkovic
2012-02-09 20:04 ` Charles Manning
2012-02-09 20:41 ` Scott Wood [this message]
2012-02-10 13:30 ` Stefano Babic
2012-02-10 15:05 ` Fabio Estevam
2012-02-10 15:14 ` Stefano Babic
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