Support of alternative boards/SBCs (pikvm#19)

* adding rock64 board

* fix file permissions

* disable atx gpio for rock64 (breaks ethernet); restore package url; fix install

* added gpio pin definitions to config

* renamed rock64 board to generic

* udev rule for generic board, improved device detection

* this udev fix should work for most boards: it skips video0 if it's not on USB, and doesn't select video2

* cleanup

* improved usb video device selection

PKGBUILD

@@ -16,6 +16,7 @@ _variants=(
 	v2-hdmi:rpi4
 
 	v2-hdmiusb:rpi4
+	v2-hdmiusb:generic
 )
 
 

configs/kvmd/main/v2-hdmiusb-generic.yaml

@@ -0,0 +1,70 @@
+# Don't touch this file otherwise your device may stop working.
+# Use override.yaml to modify required settings.
+# You can find a working configuration in /usr/share/kvmd/configs.default/kvmd.
+
+override: !include override.yaml
+
+logging: !include logging.yaml
+
+kvmd:
+    server:
+        unix: /run/kvmd/kvmd.sock
+
+    auth: !include auth.yaml
+
+    hid:
+        type: otg
+        keyboard:
+            device: /dev/kvmd-hid-keyboard
+        mouse:
+            device: /dev/kvmd-hid-mouse
+
+    atx:
+        type: disabled
+
+    msd:
+        type: otg
+
+    streamer:
+        quality: 0
+        resolution: 1920x1080
+        available_resolutions:
+            - 1920x1080
+            - 1600x1200
+            - 1360x768
+            - 1280x1024
+            - 1280x960
+            - 1280x720
+            - 1024x768
+            - 800x600
+            - 720x576
+            - 720x480
+            - 640x480
+        unix: /run/kvmd/ustreamer.sock
+        cmd:
+            - "/usr/bin/ustreamer"
+            - "--device=/dev/kvmd-video"
+            - "--persistent"
+            - "--format=jpeg"
+            - "--resolution={resolution}"
+            - "--desired-fps={desired_fps}"
+            - "--drop-same-frames=30"
+            - "--last-as-blank=0"
+            - "--unix={unix}"
+            - "--unix-rm"
+            - "--unix-mode=0660"
+            - "--exit-on-parent-death"
+            - "--process-name-prefix={process_name_prefix}"
+            - "--notify-parent"
+            - "--no-log-colors"
+
+ipmi:
+    kvmd:
+        unix: /run/kvmd/kvmd.sock
+
+vnc:
+    kvmd:
+        unix: /run/kvmd/kvmd.sock
+
+    streamer:
+        unix: /run/kvmd/ustreamer.sock

configs/os/udev/v2-hdmiusb-generic.rules

@@ -0,0 +1,5 @@
+# https://unix.stackexchange.com/questions/66901/how-to-bind-usb-device-under-a-static-name
+# https://wiki.archlinux.org/index.php/Udev#Setting_static_device_names
+KERNEL=="video[0-9]*", SUBSYSTEM=="video4linux", SUBSYSTEMS=="usb", ATTR{index}=="0", GROUP="kvmd", SYMLINK+="kvmd-video"
+KERNEL=="hidg0", GROUP="kvmd", SYMLINK+="kvmd-hid-keyboard"
+KERNEL=="hidg1", GROUP="kvmd", SYMLINK+="kvmd-hid-mouse"

kvmd.install

@@ -20,6 +20,6 @@ post_upgrade() {
 	chown kvmd /var/lib/kvmd/msd || true
 
 	echo "==> Patching configs ..."
-	sed -i -e 's/^dtoverlay=pi3-disable-bt$/dtoverlay=disable-bt/g' /boot/config.txt
-	sed -i -e 's/^dtoverlay=dwc2$/dtoverlay=dwc2,dr_mode=peripheral/g' /boot/config.txt
+	[ ! -f /boot/config.txt ] || sed -i -e 's/^dtoverlay=pi3-disable-bt$/dtoverlay=disable-bt/g' /boot/config.txt
+	[ ! -f /boot/config.txt ] || sed -i -e 's/^dtoverlay=dwc2$/dtoverlay=dwc2,dr_mode=peripheral/g' /boot/config.txt
 }