* [Buildroot] Adding support to a variant of an already supported MCU
@ 2021-11-11 14:39 Anton Kornilevsky
2021-11-11 17:08 ` Alexander Dahl
0 siblings, 1 reply; 2+ messages in thread
From: Anton Kornilevsky @ 2021-11-11 14:39 UTC (permalink / raw)
To: buildroot
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Hello,
I have been tasked with rebuilding a linux kernal for a board that is using the AT91SAM9261 MCU.
The buildroot support for this MCU has been dropped sometimes back in 2015, and I was unable to rebuild the kernal using the last supported version of buildroot, due to an error related to the integrity of the zipfile containing the sam-ba utility. I seems like the older sam-ba utility versions are no longer to be found on microchips servers.
How would one go about adding support to a variant of an MCU that is already supported by Buildroot? Is this even possible?
Any help will be greatly appriciated.
Best regards
Anton Kornilevsky
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* Re: [Buildroot] Adding support to a variant of an already supported MCU
2021-11-11 14:39 [Buildroot] Adding support to a variant of an already supported MCU Anton Kornilevsky
@ 2021-11-11 17:08 ` Alexander Dahl
0 siblings, 0 replies; 2+ messages in thread
From: Alexander Dahl @ 2021-11-11 17:08 UTC (permalink / raw)
To: Anton Kornilevsky; +Cc: buildroot
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Hei hei,
On Thu, Nov 11, 2021 at 02:39:00PM +0000, Anton Kornilevsky wrote:
> I have been tasked with rebuilding a linux kernal for a board that
> is using the AT91SAM9261 MCU.
Which is still supported by recent Linux Kernel AFAIK.
> The buildroot support for this MCU has been dropped sometimes back in 2015,
Can you point to some actual commits?
> and I was unable to rebuild the kernal using the last supported
> version of buildroot, due to an error related to the integrity of
> the zipfile containing the sam-ba utility. I seems like the older
> sam-ba utility versions are no longer to be found on microchips
> servers.
I might have those lying around somewhere, but you don't need those
for running on the target anyways, do you?
> How would one go about adding support to a variant of an MCU that is
> already supported by Buildroot? Is this even possible?
I just looked briefly over the defconfigs in buildroot's 'configs'
folder and at91sam9g20dfc_defconfig and at91sam9260eknf_defconfig
should be from the same at91 family. That should be a good start to
come up with a toolchain at least?
For building a recent kernel, at91_dt_defconfig in kernel tree should
give you a starting point?
Good luck!
Alex
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2021-11-11 14:39 [Buildroot] Adding support to a variant of an already supported MCU Anton Kornilevsky
2021-11-11 17:08 ` Alexander Dahl
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