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From: Ahmad Fatoum <a.fatoum@pengutronix.de>
To: Robert Schwebel <r.schwebel@pengutronix.de>,
	Oleksij Rempel <o.rempel@pengutronix.de>
Cc: "Holger Assmann" <h.assmann@pengutronix.de>,
	distrokit@pengutronix.de,
	"Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>
Subject: Re: [DistroKit] [PATCH v1] platform-v7a_sisd: sama5: platform w/out NEON extension
Date: Mon, 29 Mar 2021 11:52:35 +0200	[thread overview]
Message-ID: <4deae1d9-d38d-74ea-89f1-0b8b647971df@pengutronix.de> (raw)
In-Reply-To: <20210315093312.setyxtiy4u3m6klk@pengutronix.de>

On 15.03.21 10:33, Robert Schwebel wrote:
> On Fri, Mar 12, 2021 at 10:30:06PM +0100, Uwe Kleine-König wrote:
>> On Fri, Mar 12, 2021 at 02:55:30PM +0100, Oleksij Rempel wrote:
>>>  create mode 100644 configs/platform-v7a_sisd/patches/barebox-at91-stage1-2020.08.1/0001-HACK-ARM-at91-microchip-ksz9477-provide-first-stage-.patch
>>>  create mode 100644 configs/platform-v7a_sisd/patches/barebox-at91-stage1-2020.08.1/0002-ARM-at91-microchip-ksz9477-evb-implement-first-stage.patch
>>>  create mode 100644 configs/platform-v7a_sisd/patches/barebox-at91-stage1-2020.08.1/0003-fixup-HACK-ARM-at91-microchip-ksz9477-provide-first-.patch
>>
>> What is the good reason to have a fixup patch in a patch stack? Why not
>> squash it?
> 
> The patches look a bit questionable for DistroKit. Please rework.

Yes, Oleksij, please do :-)

FTR: barebox has a multi-image at91_multi_defconfig, which builds multiple boards
in one go. For the two sama5d27 boards, this includes both first stage and second
stage bootloaders.

The patches included here, require two barebox images to be built with different
configs. One minimal image (BOOT.BIN) to fit into 64k SRAM, which in turn loads
the bigger barebox image (barebox.bin) from FAT into DRAM.

What's basically missing is a PBL driver to chainload barebox.bin from the BOOT.BIN
prebootloader. This is already possible with the sama5d27, so that can be used
as reference point. SAMA5D2 and D3 have different SD host controllers, however.

Good luck!
Ahmad

> 
> rsc
> 
> 
> _______________________________________________
> DistroKit mailing list
> DistroKit@pengutronix.de
> 

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  reply	other threads:[~2021-03-29  9:52 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-12 13:55 Oleksij Rempel
2021-03-12 21:30 ` Uwe Kleine-König
2021-03-15  9:33   ` Robert Schwebel
2021-03-29  9:52     ` Ahmad Fatoum [this message]
2021-03-15 11:07 ` Roland Hieber

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