Make OpenWrt memory customizable

docker-compose.yml

@@ -13,11 +13,6 @@ services:
         #OPENWRT_VERSION: "master"
 
     environment:
-      #DEBUG: "y"
-
-      # Define number of VM CPUs
-      CPU_COUNT: 2
-
       # Define which physical or virtual interfaces shall be attach direct to OpenWrt
       # If WAN_IF/LAN_IF is missing then "host" mode is selected
       # -
@@ -39,6 +34,16 @@ services:
       #USB_1: "0bda:8153"
       #USB_2: "0e8d:7961"
 
+      # Define number of VM CPUs
+      # If unset -> 1
+      CPU_COUNT: 2
+
+      # Define amount of VM memory in MB
+      # If unset -> 256
+      RAM_COUNT: 256
+
+      #DEBUG: "y"
+
     ports:
       # Port 8006 is console tty web VNC
       - 8006:8006

src/helpers.sh

@@ -8,7 +8,8 @@ warn () { printf "%b%s%b" "\E[1;31m❯ " "Warning: $1" "\E[0m\n"; }
 trap 'error "Status $? while: $BASH_COMMAND (line $LINENO/$BASH_LINENO)"' ERR
 
 # Docker environment variables
-: "${CPU_COUNT:=""}"      # Physical LAN interface name
+: "${CPU_COUNT:="1"}"     # Number of virtualized CPUs
+: "${RAM_COUNT:="256"}"   # Amount of memory
 : "${WAN_IF:=""}"         # Physical WAN interface name
 : "${LAN_IF:=""}"         # Physical LAN interface name
 : "${USB_1:=""}"          # USB 1 vendor and device ID

src/run_openwrt.sh

@@ -212,7 +212,7 @@ info "Booting image using $VERS..."
 #************************ FINAL BOOTING ************************
 exec qemu-system-"$CPU_ARCH" \
 --enable-kvm -cpu host \
--m 256 \
+-m $RAM_COUNT \
 -nodefaults \
  $CPU_ARGS -smp $CPU_COUNT \
 -display vnc=:0,websocket=5700 \

u-os-app/manifest.json.template

@@ -2,7 +2,7 @@
   "manifestVersion": "0.2",
   "version": "APPVERSION_TO_INSERT",
   "title": "OpenWrt preview",
-  "description": "Open source OpenWrt software router project (https://openwrt.org/). This software router preview requires a UC20-M3000/4000 with enabled KVM Linux kernel feature. Otherwise it will be unusable slow.",
+  "description": "Open source OpenWrt software router project (https://openwrt.org/). This software router preview requires a UC20-M3000/4000 with enabled KVM Linux kernel feature.",
   "logo": "openwrt_logo_text_vertical_blue_and_dark_blue.svg",
   "vendor": {
     "name": "Albrecht Lohofener",
@@ -174,6 +174,30 @@
             "value": "4"
           }
         ]
+      },
+      {
+        "name": "RAM_COUNT",
+        "label": "Amount of memory",
+        "description": "You can select how much memory OpenWrt can use. Leave it by default if you are unsure. Default is 256 MB.",
+        "select": [
+          {
+            "label": "250 MB",
+            "value": "250",
+            "default": true
+          },
+          {
+            "label": "512 MB",
+            "value": "512"
+          },
+          {
+            "label": "1024 MB",
+            "value": "1024"
+          },
+          {
+            "label": "2048 MB",
+            "value": "2048"
+          }
+        ]
       }
     ]
   }