[Macchiato] Ubuntu Bionic 18.04.2 install issues on Macchiatto bin

[macchiattobin at kooman.org]

Hi List,

I've been able to install a whole bunch of OS'es on the mcbin, mainly
through u-boot. But I really like the mcbin to be "just another server"
that works the same as x86_64 hardware with EFI. So, I've build EDK2
(2.7 18.11, mv_ddr 18.12) and I managed to install openSuSE / Debian
(buster) this way. However, Ubuntu is the distro of choice at my work,
so that's what I want to install on it.

Issue: Only when EFI is in "ACPI" mode (Device Manager->O/S Hardware
Description Selection->O/S Hardware Description->ACPI) is it possible to
run the installer. However, in this mode no nics / disks are detected
and hence it's impossible to install it on the mcbin. As soon as EFI
uses the DTB it hangs with the following messages (captured with
"earlycon" as kernel command parameter):

...
...
[    1.167062] evm: security.SMACK64
[    1.170457] evm: security.SMACK64EXEC
[    1.174212] evm: security.SMACK64TRANSMUTE
[    1.178407] evm: security.SMACK64MMAP
[    1.182180] evm: security.apparmor
[    1.185667] evm: security.ima
[    1.188716] evm: security.capability
[    1.192411] evm: HMAC attrs: 0x1
[    1.195838] hw perfevents: unable to count PMU IRQs
[    1.200818] hw perfevents: /ap806/config-space at f0000000/pmu: failed to register PMU devices!
[    1.209876] dw-pcie f2600000.pcie: could not find pctldev for node /cp0/config-space at f2000000/system-controller at 440000/pinctrl/pcie-pins, deferring probe                                                                              
[    1.224778] dw-apb-uart f0512000.serial: could not find pctldev for node /ap806/config-space at f0000000/system-controller at 6f4000/pinctrl/uart0-pins, deferring probe                                                                     
[    1.239822] dw-apb-uart f2702100.serial: could not find pctldev for node /cp0/config-space at f2000000/system-controller at 440000/pinctrl/uart1-pins, deferring probe                                                                       
[    1.254689] dw-apb-uart f4702000.serial: could not find pctldev for node /cp1/config-space at f4000000/system-controller at 440000/pinctrl/uart0-pins, deferring probe                                                                       
[    1.269549] rtc-efi rtc-efi: setting system clock to 2019-05-14 09:38:01 UTC (1557826681)
[    1.278261] clk: Not disabling unused clocks
[    1.282661] Warning: unable to open an initial console.
[    1.291210] Freeing unused kernel memory: 5888K
[    1.311061] Checked W+X mappings: passed, no W+X pages found

Anybody succesfully installed Ubuntu Bionic on the mcbin, or knows what is
going on here / provide a workaround?

Thanks,

Stefan