Can't Connect to Display (arch linux on Stratix 10 w/ E9171 GPU)

Connect Stratix10 to external display though embedded GPU via PICe, and run GlxGears.

Though GPU is detected, can not connect to external display.

Hardware Specifics
Intel Stratix10 SoC H-Tile DevKit.
Using the GHRD for FGPA image.
Using AMD E-9171 GPU through on-board PCIe slot.

OS Configuration
Following instruction from Rocketboards ( Documentation/GSRDCompilingLinux_S10 )
we built the U-Boot and Linux Kernal as instructed, but then proceeded to use ARMv8 Generic Arch Linux RFS (Generic AArch64 Installation | Arch Linux ARM). We chose this RFS as it has PacMan built in and made onboard development much easier. In this OS configuration used the xf86-video-amdgpu as our graphics driver.

To start we followed the rocketboard instructions to build out the Linux Kernal and U-Boot.
( Documentation/GSRDCompilingLinux_S10 )
After multiple attempts we were able to get the Kernal and U-Boot to build, but never the actual File System. Because of this we chose to use the ARM ARCH Linux Root File System, mainly because it has a package manager and I have used it extensively in the past.
archlinuxarm dot org

Using PacMan (package manager) we installed all the necessary drivers and utils that should have the GPU up and running. We confirmed that the standard OpenAMD drivers will work, as we tested it on another system (x86). And doing this we can see that the GPU shows up with ‘lspci’. But when we run it with verbose printing ‘lspci -vvvvv’ we see that DevSta throws a CorrErr+ implying a correctable error.

In addition to this we see that when running ‘dmsg’ the pcie slot for the GPU throws a lot of errors regarding the memory for the PCIe Bar Space allocation. See below that there is no space for the I/O on PCI Bar 4, this throws the error “[drm:radeon_device_init] ERROR Unable to find PCI I/O BAR” and fails the GPU initialization.

[ 0.205970] OF: PCI: host bridge /soc/bridge@80000000/pcie@A0000000 ranges:
[ 0.206012] OF: PCI: MEM 0x90000000…0x9fffffff → 0x00000000
[ 0.206137] altera-pcie a0000000.pcie: PCI host bridge to bus 0000:00
[ 0.206154] pci_bus 0000:00: root bus resource [bus 00-ff]
[ 0.206169] pci_bus 0000:00: root bus resource [mem 0x90000000-0x9fffffff] (bus address [0x00000000-0x0fffffff])
[ 0.206273] pci 0000:00:00.0: enabling Extended Tags
[ 0.206490] pci 0000:00:00.0: bridge configuration invalid ([bus 00-00]), reconfiguring
[ 0.207310] pci 0000:01:00.0: enabling Extended Tags
[ 0.208224] pci 0000:01:00.0: vgaarb: VGA device added: decodes=io+mem,owns=none,locks=none
[ 0.208977] pci 0000:01:00.1: enabling Extended Tags
[ 0.210459] pci 0000:01:00.2: enabling Extended Tags
[ 0.211482] pci 0000:00:00.0: BAR 15: assigned [mem 0x90000000-0x97ffffff 64bit pref]
[ 0.211500] pci 0000:00:00.0: BAR 14: assigned [mem 0x98000000-0x980fffff]
[ 0.211514] pci 0000:00:00.0: BAR 13: no space for [io size 0x1000]
[ 0.211527] pci 0000:00:00.0: BAR 13: failed to assign [io size 0x1000]
[ 0.211545] pci 0000:01:00.0: BAR 0: assigned [mem 0x90000000-0x97ffffff 64bit pref]
[ 0.211638] pci 0000:01:00.0: BAR 2: assigned [mem 0x98000000-0x9803ffff 64bit]
[ 0.211728] pci 0000:01:00.0: BAR 6: assigned [mem 0x98040000-0x9805ffff pref]
[ 0.211744] pci 0000:01:00.1: BAR 0: assigned [mem 0x98060000-0x98063fff 64bit]
[ 0.211834] pci 0000:01:00.0: BAR 4: no space for [io size 0x0100]
[ 0.211846] pci 0000:01:00.0: BAR 4: failed to assign [io size 0x0100]
[ 0.211861] pci 0000:01:00.2: BAR 0: assigned [mem 0x98064000-0x9806407f 64bit]
[ 0.211952] pci 0000:00:00.0: PCI bridge to [bus 01]
[ 0.211968] pci 0000:00:00.0: bridge window [mem 0x98000000-0x980fffff]
[ 0.211984] pci 0000:00:00.0: bridge window [mem 0x90000000-0x97ffffff 64bit pref]
[ 0.212093] pcieport 0000:00:00.0: enabling device (0000 → 0002)
[ 0.212284] pcieport 0000:00:00.0: Signaling PME with IRQ 59
[ 0.212420] pcieport 0000:00:00.0: AER enabled with IRQ 59
[ 0.213420] EINJ: ACPI disabled.
[ 0.218848] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[ 0.220403] ffc02000.serial0: ttyS0 at MMIO 0xffc02000 (irq = 25, base_baud = 6250000) is a 16550A
[ 1.278922] console [ttyS0] enabled
[ 1.283095] SuperH (H)SCI(F) driver initialized
[ 1.287881] msm_serial: driver initialized
[ 1.292508] [drm] radeon kernel modesetting enabled.
[ 1.297863] radeon 0000:01:00.0: enabling device (0000 → 0002)
[ 1.304149] [drm] initializing kernel modesetting (VERDE 0x1002:0x6822 0x0000:0x0000 0x00).
[ 1.312504] [drm:radeon_device_init] ERROR Unable to find PCI I/O BAR
[ 1.319221] radeon 0000:01:00.0: Invalid PCI ROM header signature: expecting 0xaa55, got 0x0000
[ 1.327959] radeon 0000:01:00.0: Invalid PCI ROM header signature: expecting 0xaa55, got 0x0000
[ 1.336669] [drm:radeon_get_bios] ERROR Unable to locate a BIOS ROM
[ 1.343093] radeon 0000:01:00.0: Fatal error during GPU init

This leads me to believe that it must be a Kernal/device tree issue, I am unsure how to proceed from here. Again, the goal is to get this system connected to an external display and run GlxGears. Hoping there is some simple step in setup I have overlooked, so any advice would be greatly apricated.