FreeBSD on AmigaOne X5000

[Justin Hibbits]

Hi Al,

You'll want to update to at least r328269, I fixed a linking issue
where it would pad 1MB of zeros between the ELF header and the start
of the actual kernel, causing loading misalignment.

- Justin


On Mon, Jan 22, 2018 at 2:10 PM, Al Zick <al at familysafeinternet.com> wrote:
> Hi Justin,
>
> This is amazing that you were able to get the built in ethernet working.
>
> I just built the world and I am working on getting the kernel built.
>
> Kind Regards,
> Al
>
>
>
>
>
> On Jan 21, 2018, at 11:39 PM, Justin Hibbits wrote:
>
>> Hi Al,
>>
>> With the device tree addition of the PHY information, on the Linux
>> cyrus device tree, Ethernet works just fine on FreeBSD, so there's no
>> problem when using my modified tree.
>>
>> I also tested today loading the radeonkms driver, and it loaded just
>> fine, so maybe the crash was a fluke.  It of course needs more
>> testing.
>>
>> - Justin
>>
>> On Thu, Jan 18, 2018 at 8:02 PM, Al Zick <al at familysafeinternet.com>
>> wrote:
>>>
>>> Hi Justin,
>>>
>>> I don't know if this helps, but there is work being done to get the X5000
>>> built in network ports working in both AmigaOS and Linux. I know the
>>> issue
>>> he had/has with the PHY hookups. Honestly, I am not sure which one of you
>>> are further along, so I don't know if that helps.
>>>
>>> I will be installing FreeBSD on my X5000. I will let you know when I get
>>> it
>>> installed and then I will start testing.
>>>
>>> Kind Regards,
>>> Al
>>>
>>>
>>>
>>>
>>>
>>> On Jan 18, 2018, at 12:11 PM, Justin Hibbits wrote:
>>>
>>>> Hi Al,
>>>>
>>>> FreeBSD runs pretty well on the AmigaOne X5000, but there are some
>>>> gotchas right now.  It needs a minor change to the dts in order to use
>>>> the ethernet controller, and you currently have to make an
>>>> execute-in-place uImage, for 64-bit kernels anyway.
>>>>
>>>> The former is impossible to work around, because the device tree is
>>>> just incorrect with regard to the PHY hookups (it lists TBI
>>>> connections, but the AmigaOne X5000 uses rgmii, which puts all
>>>> connections through dtsec0's mdio).  You can find my working device
>>>> tree at https://people.freebsd.org/~jhibbits/cyrus_p5020_amiga2.dtb .
>>>>
>>>> The latter I'm currently working on, and plan to have ubldr loading
>>>> 64-bit kernels in the next couple weeks, so we won't need to build
>>>> uImages.  But, for now, the way I do it is:
>>>>
>>>> buildkernel with KERNCONF=QORIQ64
>>>>
>>>> Using NetBSD's 'mkubootimage' (easy enough to build on FreeBSD with
>>>> some minor tweaks to the source), run:
>>>>
>>>> mkubootimage -A powerpc -C none -T kernel -O linux -a 0x3ffffc0 -e
>>>> <entrypoint from readelf -h> -N "FreeBSD AmigaOne X5000"
>>>> amiga64.uImage /path/to/built/kernel
>>>>
>>>> Then I can boot that image via either dhcp or sata (Be sure to load it
>>>> to 0x3ffffc0, for some reason uboot doesn't copy the image when loaded
>>>> to the default loadaddr of 0x01000000).
>>>>
>>>> Booting from SATA you need to create an MBR partition scheme, and the
>>>> first partition must be FAT, since uboot doesn't know how to read
>>>> FreeBSD disklabels and UFS.  I made two partitions: 128MB FAT to put
>>>> the kernel, ubldr, and dtb; and the rest of my disk is a BSD disklabel
>>>> volume, partitioned like a normal FreeBSD system.  You would put the
>>>> dtb and uImage in the FAT partition, and set the uboot bootargs
>>>> environment variable to 'vfs.root.mountfrom=ufs:/dev/ada0s2a'
>>>> (assuming /dev/ada0s2a is the root you create, as my example is)
>>>>
>>>>
>>>> As for what you can do to help, that depends on your skill set.
>>>>
>>>> If you're happy in the kernel:
>>>> * I have some patches to drm2 so it can load the radeonkms driver, but
>>>> it crashes due to TLB synchronization issues between the two cores,
>>>> that might be interesting to look at.
>>>> * Performance improvements:  CPU0 is seeing a very high decrementer
>>>> interrupt count, measured with vmstat -i.  I think this might be uboot
>>>> messing up the clock frequency information populating, but I'm not
>>>> sure.  Maybe test that.
>>>> * There are still device drivers missing for things like the XMOS and
>>>> CPLD.
>>>>
>>>> If you'd prefer userspace, once you have FreeBSD installed, and able
>>>> to use the network:
>>>> * Build a kernel with ZFS (just add "options ZFS" to the QORIQ config,
>>>> or create your own), and test building everything with poudriere.
>>>> Report any bugs and panics you see.  Just hammer away.
>>>> * It's pretty boringly stable up in userspace, so it's hard for me to
>>>> think of anything more.
>>>>
>>>> Let me know what you're interested in, and I can point you to
>>>> somewhere you can help.
>>>>
>>>> Glad to see interest in this!
>>>>
>>>> - Justin
>>>>
>>>> On Wed, Jan 17, 2018 at 5:20 PM, Al Zick <al at familysafeinternet.com>
>>>> wrote:
>>>>>
>>>>>
>>>>> Hi,
>>>>>
>>>>> Would it be possible to find out about how much progress has been made
>>>>> on
>>>>> the FreeBSD port to the AmigaOne X5000 in the last few months and if
>>>>> there
>>>>> is anything that I can do to help?
>>>>>
>>>>> Kind Regards,
>>>>> Al
>>>>>
>>>>>
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>>>
>>>
>>>
>