GNU bug report logs - #45519
MLO failed to load u-boot.img on beaglebone black(AM335x)

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From: Denis 'GNUtoo' Carikli <GNUtoo <at> cyberdimension.org>
To: 45519 <at> debbugs.gnu.org
Subject: bug#45519: MLO failed to load u-boot.img  on beaglebone black(AM335x)
Date: Tue, 29 Dec 2020 05:33:55 +0100

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On Tue, 29 Dec 2020 04:47:25 +0100
Denis 'GNUtoo' Carikli <GNUtoo <at> cyberdimension.org> wrote:
> > "/libexec/MLO")) (u-boot (string-append bootloader
> > "/libexec/u-boot.img"))) (write-file-on-device mlo (* 256 512)
> >                               image (* 256 512))
> >         (write-file-on-device u-boot (* 1024 512)
> >                               image (* 768 512)))))
Ah my bad, theses are in bytes (write-file-on-device uses seek which
looks like lseek). 

So if u-boot.img is 600k, that's over the 512k.

MLO[1] is about 108k (108740 bytes), so that's under 128KiB.

So we could move u-boot.img at 256KiB instead of 384KiB.

This way we'll still have some margin for MLO but and increase the
space for u-boot.img to 768k.

References:
-----------
[1]/gnu/store/83rpk8q9bww0phl6z6zgpf06qhqs8cw6-u-boot-am335x-boneblack-2020.10/libexec/MLO

Denis.

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