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From: Giulio Benetti <giulio.benetti@benettiengineering.com>
To: Sergey Kuzminov <kuzminov.sergey81@gmail.com>
Cc: Heiko Thiery <heiko.thiery@gmail.com>,
	"Yann E. MORIN" <yann.morin.1998@free.fr>,
	Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
	buildroot@buildroot.org
Subject: Re: [Buildroot] [PATCH 1/2] board/kontron/pitx-imx8m: use extlinux instead of U-Boot boot script
Date: Mon, 24 Jan 2022 09:12:47 +0100	[thread overview]
Message-ID: <2BFF5C08-8E54-4689-894E-0A0BE3D6A71A@benettiengineering.com> (raw)
In-Reply-To: <1dea301e-8425-a1ca-fc69-db338825b19c@gmail.com>


> Il giorno 24 gen 2022, alle ore 06:43, Sergey Kuzminov <kuzminov.sergey81@gmail.com> ha scritto:
> 
> Hi All,
> 
> 24.01.2022 01:01, Giulio Benetti:
>> IMHO the worst drawback I see while using extlinux.conf VS boot.scr is the missing checksum. Especially on embedded systems we deeply treat.
>> Not having such checksum can make system booting without a parameter on linux command line for example, only because 1 ASCII has been corrupted.
>> I prefer the system to not boot at all in general instead of having it "working" while hiding some potential problem.
>> What do you and All think about this?
> 
> IMHO extlinux.conf is more debugging friendly.
> 
> Boot.scr requires the following command:
> mkimage -C none -A arm -T script -d boot.cmd boot.scr
> 
> The mkimage utility (BR2_PACKAGE_HOST_UBOOT_TOOLS) is not on the board, you need to transfer the converted file over the network. Or reconnect the microSD card.

I agree with this too. I’ve found myself many times blaming because I couldn’t simply modify boot.scr on target and reboot.
But I find it still dangerous.

Another thing that I don’t find possible to do with extlinux.conf is using uboot scripting possibility that enables you to do lot or things, like fdt-overlay expand and apply, show a bmp instead of having a static splashscreen and so on.

I don’t think this is achievable with extlinux.conf

These are only my thoughts but I still don’t have a solution honestly. In particular to uniform boards.

Best regards
Giulio
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  reply	other threads:[~2022-01-24  8:12 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-01-17  8:06 [Buildroot] [PATCH 1/2] board/kontron/pitx-imx8m: use extlinux instead of U-Boot boot script Heiko Thiery
2022-01-17  8:06 ` [Buildroot] [PATCH 2/2] configs/kontron_pitx_imx8m_defconfig: bump kernel to 5.16.1 Heiko Thiery
2022-01-22 14:11   ` Thomas Petazzoni
2022-01-22 14:11 ` [Buildroot] [PATCH 1/2] board/kontron/pitx-imx8m: use extlinux instead of U-Boot boot script Thomas Petazzoni
2022-01-22 15:59   ` Heiko Thiery
2022-01-23 22:01   ` Giulio Benetti
2022-01-24  5:42     ` Sergey Kuzminov
2022-01-24  8:12       ` Giulio Benetti [this message]
2022-02-12 13:50   ` Arnout Vandecappelle

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