pine64-rockpro64: init

pine64/rockpro64/README.md

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+# Pine64 RockPro64
+
+## _Tow-Boot_
+
+We highly suggest installing _Tow-Boot_ to the SPI Flash.
+
+- https://github.com/Tow-Boot/Tow-Boot
+
+Having the firmware installed to SPI makes the device act basically like a
+normal computer. No need for weird incantations to setup the platform boot
+firmware.
+
+Alternatively, starting from the _Tow-Boot_ disk image on eMMC is easier to
+deal with and understand than having to deal with _U-Boot_ manually.

pine64/rockpro64/default.nix

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+{ pkgs, lib, ... }:
+{
+  boot.initrd.kernelModules = [
+    # PCIe/NVMe
+    "nvme"
+    "pcie_rockchip_host"
+    "phy_rockchip_pcie"
+  ];
+}