[fedora-arm] Fedora on mmc / cubieboard 2

[Gonzalo Huerta-Canepa]

Hello everybody,
I installed fedora en my cubieboard2, using a sdcard, and it runs OK.
Nevertheless, my idea was to execute it from its mmc disk.
I tried to follow exactly the same procedure as with the sdcard, writing uboot and then the distro using the dd command, but this time into the mmc, but nothing happens. If I try to boot the system after writing the mms, nothing happens, it does not even boot.
Does anyone knows how can I overcome this hurdle?

Thanks!
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[Peter Robinson]

Post by Gonzalo Huerta-Canepa
Hello everybody,
I installed fedora en my cubieboard2, using a sdcard, and it runs OK.
Nevertheless, my idea was to execute it from its mmc disk.
I tried to follow exactly the same procedure as with the sdcard, writing uboot and then the distro using the dd command, but this time into the mmc, but nothing happens. If I try to boot the system after writing the mms, nothing happens, it does not even boot.
Does anyone knows how can I overcome this hurdle?

Do you mean an eMMC? I'm not sure the cubieboard2 has any onboard eMMC storage.
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[Gonzalo Huerta-Canepa]

Thanks for the quick reply.
Regarding your questions, yep, I meant eMMC, and yes the cb2 has eMMC.
Actually, there are two versions of the cubieboard 2, one with nand and another with eMMC.
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[Peter Robinson]

Post by Gonzalo Huerta-Canepa
Thanks for the quick reply.
Regarding your questions, yep, I meant eMMC, and yes the cb2 has eMMC.
Actually, there are two versions of the cubieboard 2, one with nand and another with eMMC.

The support for that isn't upstream (and I'd never seen one with emmc)
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[Robert Moskowitz]

Post by Peter Robinson

Post by Gonzalo Huerta-Canepa
Thanks for the quick reply.
Regarding your questions, yep, I meant eMMC, and yes the cb2 has eMMC.
Actually, there are two versions of the cubieboard 2, one with nand and another with eMMC.

The support for that isn't upstream (and I'd never seen one with emmc)

Peter,

Is lack of NAND boot support a uboot or kernel issue?

Can uboot be placed on NAND, and all the partitions on sata?

And if so, how to put uboot properly on NAND.

thanks
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[Dennis Gilmore]

Post by Robert Moskowitz

On Mon, Nov 26, 2018 at 7:28 PM Gonzalo Huerta-Canepa <

Post by Gonzalo Huerta-Canepa
Thanks for the quick reply.
Regarding your questions, yep, I meant eMMC, and yes the cb2 has eMMC.
Actually, there are two versions of the cubieboard 2, one with
nand and another with eMMC.

The support for that isn't upstream (and I'd never seen one with emmc)

Peter,
Is lack of NAND boot support a uboot or kernel issue?
Can uboot be placed on NAND, and all the partitions on sata?
And if so, how to put uboot properly on NAND.
thanks

LAst I looked there was no support in mainline linux or u-boot for the
nand devices on allwinner devices. you would need to see what is
missing from u-boot from using the nand and then use the standard u-
boot ways to install u-boot to the nand after resolving the
deficiencies.

Dennis

[Peter Robinson]

Post by Dennis Gilmore

Post by Robert Moskowitz

On Mon, Nov 26, 2018 at 7:28 PM Gonzalo Huerta-Canepa <

Post by Gonzalo Huerta-Canepa
Thanks for the quick reply.
Regarding your questions, yep, I meant eMMC, and yes the cb2 has eMMC.
Actually, there are two versions of the cubieboard 2, one with
nand and another with eMMC.

The support for that isn't upstream (and I'd never seen one with emmc)

Peter,
Is lack of NAND boot support a uboot or kernel issue?
Can uboot be placed on NAND, and all the partitions on sata?
And if so, how to put uboot properly on NAND.
thanks

LAst I looked there was no support in mainline linux or u-boot for the
nand devices on allwinner devices. you would need to see what is
missing from u-boot from using the nand and then use the standard u-
boot ways to install u-boot to the nand after resolving the
deficiencies.

The upstream MTD support in both linux and u-boot has improved greatly
recently, in the later case I believe as of 2018.11 it's mostly usable
but it's not been investigated in the Fedora context for U-Boot
because of time and priorities. From a running Fedora on the MTD
there's even less investigation because you basically need to build
device specific images on special filesytems.

From a using it for U-Boot point of view it should be quite straight
forward to implement and document for Fedora if someone has the time
and inclination to do it, happy to provide direction and assist in
getting the resulting work into our processes but those that are
actively working on Fedora ARM just don't have the time to do it
themselves because it provides only a little return of that time
investment, there's so much else to do that provides a bigger impact
in general and the current way we support those devices works just
fine and is uniform across all AllWinner devices so much easier to
support.

Peter
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