From: Antony Pavlov <antonynpavlov@gmail.com>
To: Sascha Hauer <s.hauer@pengutronix.de>
Cc: barebox <barebox@lists.infradead.org>
Subject: Re: [RFC] add Tegra support to barebox
Date: Thu, 11 Aug 2011 11:04:43 +0400 [thread overview]
Message-ID: <CAA4bVAFK=xvXaJSEenWp9u9ndtBw1UTsf+hugez2Tim-G3=+Wg@mail.gmail.com> (raw)
In-Reply-To: <20110811062518.GZ31404@pengutronix.de>
On 11 August 2011 10:25, Sascha Hauer <s.hauer@pengutronix.de> wrote:
> On Thu, Aug 11, 2011 at 12:24:27AM +0400, Antony Pavlov wrote:
>> Hi!
>>
>> I have a Toshiba AC100 smartbook. It is based on Nvidia Tegra 250 T20 chip.
>> I want to port barebox to it.
>>
>> I have successfully built and run u-boot for AC100 from
>> https://github.com/chpec/uboot-ac100.git. This u-boot version has lcd,
>> serial port and USB support.
>> There is another tegra support u-boot branch:
>> https://github.com/muromec/uboot-tegra.git
>> Also linux has satisfactory tegra support.
>>
>> I want to discuss source file organization for Tegra and AC100 support
>> in the barebox.
>> AFAIK tegra is not resemble to current arm machines, supported by barebox.
>>
>> For example, this is the comment from barebox tegra source code:
>>
>> /*
>> * Tegra2 uses 2 separate CPUs - the AVP (ARM7TDMI) and the CPU (dual A9s).
>> * U-Boot runs on the AVP first, setting things up for the CPU (PLLs,
>> * muxes, clocks, clamps, etc.). Then the AVP halts, and expects the CPU
>> * to pick up its reset vector, which points here.
>> */
>
> Does this mean you have to build two U-Boot binaries?
AFAIK, no.
> How big is the code that runs on the AVP?
I can't say it just now.
--
Best regards,
Antony Pavlov
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prev parent reply other threads:[~2011-08-11 7:04 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-10 20:24 Antony Pavlov
2011-08-11 5:01 ` Jean-Christophe PLAGNIOL-VILLARD
2011-08-11 6:12 ` Antony Pavlov
2011-08-11 6:25 ` Sascha Hauer
2011-08-11 7:04 ` Antony Pavlov [this message]
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