From: Lucas Stach <l.stach@pengutronix.de>
To: "Yazdani, Reyhaneh" <RYazdani@data-modul.com>,
"barebox@lists.infradead.org" <barebox@lists.infradead.org>
Subject: Re: imx-usb-loader on imx8mq/mm
Date: Thu, 12 Dec 2019 11:24:04 +0100 [thread overview]
Message-ID: <f67d5b7fec7c354a8d632dc8e20d15e5c273030f.camel@pengutronix.de> (raw)
In-Reply-To: <c0e44a15-802d-b008-36b3-3b3d6007e587@data-modul.com>
Hi Reyhaneh,
On Do, 2019-12-12 at 10:13 +0000, Yazdani, Reyhaneh wrote:
> Hello everyone,
>
> I am trying to load Barebox to the imx8mm board via imx-usb-loader, but it stops
> in the middle. I think maybe it is because we do not have a flash-header file
> with the static RAM configuration. Does someone have any idea about that?
Currently it's impossible to load Barebox on the i.MX8M via the imx-
usb-loader. The basic issue is that the DRAM setup happens in the PBL,
so there is no way to play the DCD and load a complete Barebox image
into DRAM like we do on the older SoCs.
For boards that do the DRAM setup in the PBL we would need to implement
a 2 step loading approach in imx-usb-loader:
First load the PBL part (max_load_size in the flash-header) into SRAM,
execute the DRAM setup, then have a implementation of the imx serial
load USB protocol in the PBL, so imx-usb-loader can load the complete
image into DRAM.
There's quite a bit of implementation work to be done here, but it
would be a very welcome addition to Barebox.
Regards,
Lucas
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next prev parent reply other threads:[~2019-12-12 10:24 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-12 10:13 Yazdani, Reyhaneh
2019-12-12 10:24 ` Lucas Stach [this message]
2019-12-13 7:20 ` Yazdani, Reyhaneh
2019-12-13 7:55 ` Sascha Hauer
2019-12-13 14:24 ` Yazdani, Reyhaneh
2020-02-21 18:32 ` Ahmad Fatoum
2020-02-24 8:43 ` Sascha Hauer
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