sd-image-armv7l-multiplatform.nix: Document serial consoles used

Changed files
+6
nixos
modules
+6
nixos/modules/installer/cd-dvd/sd-image-armv7l-multiplatform.nix
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boot.loader.generic-extlinux-compatible.enable = true;
boot.kernelPackages = pkgs.linuxPackages_latest;
boot.kernelParams = ["console=ttyS0,115200n8" "console=ttymxc0,115200n8" "console=ttyAMA0,115200n8" "console=ttyO0,115200n8" "console=ttySAC2,115200n8" "console=tty0"];
# FIXME: this probably should be in installation-device.nix
···
boot.loader.generic-extlinux-compatible.enable = true;
boot.kernelPackages = pkgs.linuxPackages_latest;
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# The serial ports listed here are:
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# - ttyS0: for Tegra (Jetson TK1)
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# - ttymxc0: for i.MX6 (Wandboard)
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# - ttyAMA0: for Allwinner (pcDuino3 Nano) and QEMU's -machine virt
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# - ttyO0: for OMAP (BeagleBone Black)
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# - ttySAC2: for Exynos (ODROID-XU3)
boot.kernelParams = ["console=ttyS0,115200n8" "console=ttymxc0,115200n8" "console=ttyAMA0,115200n8" "console=ttyO0,115200n8" "console=ttySAC2,115200n8" "console=tty0"];
# FIXME: this probably should be in installation-device.nix