diff --git a/scripts/gen_pimrules.py b/scripts/gen_pimrules.py
new file mode 100755
index 0000000..729f095
--- /dev/null
+++ b/scripts/gen_pimrules.py
@@ -0,0 +1,183 @@
+#!/usr/bin/env python
+
+'''Generate PIM rules for ipmi-fru-parser.
+'''
+
+import argparse
+import os
+import sys
+import yaml
+from mako.template import Template
+
+tmpl = '''
+description: >
+    PIM rules for ipmi-fru-parser inventory objects.
+events:
+
+    - name: Host off at startup
+      description: >
+          Mark ipmi-fru-parser inventory items as cached when
+          the host is off at startup.
+      type: startup
+      actions:
+          - name: setProperty
+            interface: ${cacheable_iface}
+            property: ${cacheable_property}
+            paths:
+%for i in cacheable:
+                - ${i}
+%endfor
+            value:
+              type: ${cacheable_type}
+              value: ${cacheable_cached}
+
+    - name: Host off event
+      description: >
+          Mark ipmi-fru-parser inventory items as cached when
+          the host goes away.
+      type: match
+      signatures:
+          - type: signal
+            interface: org.freedesktop.DBus.Properties
+            path: ${off_path}
+            member: PropertiesChanged
+      filters:
+          - name: propertyChangedTo
+            interface: ${off_iface}
+            property: ${off_property}
+            value:
+              value: ${off_value}
+              type: ${off_type}
+      actions:
+          - name: setProperty
+            interface: ${cacheable_iface}
+            property: ${cacheable_property}
+            paths:
+%for i in cacheable:
+                - ${i}
+%endfor
+            value:
+              type: ${cacheable_type}
+              value: ${cacheable_cached}
+
+    - name: Host on at startup
+      description: >
+          Remove ipmi-fru-parser inventory items when the host is finished
+          sending inventory items and the item is still marked as cached.
+      type: startup
+      filters:
+          - name: propertyIs
+            path: ${on_path}
+            interface: ${on_iface}
+            property: ${on_property}
+            value:
+              value: ${on_value}
+              type: ${on_type}
+      actions:
+          - name: destroyObjects
+            paths:
+%for i in cacheable:
+                - ${i}
+%endfor
+            conditions:
+              - name: propertyIs
+                interface: ${cacheable_iface}
+                property: ${cacheable_property}
+                value:
+                  type: ${cacheable_type}
+                  value: ${cacheable_cached}
+
+    - name: Host on event
+      description: >
+          Remove ipmi-fru-parser inventory items when the host is finished
+          sending inventory items and the item is still marked as cached.
+      type: match
+      signatures:
+          - type: signal
+            interface: org.freedesktop.DBus.Properties
+            path: ${on_path}
+            member: PropertiesChanged
+      filters:
+          - name: propertyChangedTo
+            interface: ${on_iface}
+            property: ${on_property}
+            value:
+              value: ${on_value}
+              type: ${on_type}
+      actions:
+          - name: destroyObjects
+            paths:
+%for i in cacheable:
+                - ${i}
+%endfor
+            conditions:
+              - name: propertyIs
+                interface: ${cacheable_iface}
+                property: ${cacheable_property}
+                value:
+                  type: ${cacheable_type}
+                  value: ${cacheable_cached}
+'''
+
+
+def get_cacheable_objs(yaml):
+    cacheable = []
+
+    for objdata in data.itervalues():
+        if not isinstance(objdata, dict):
+            continue
+        for path, ifaces in objdata.iteritems():
+            if not isinstance(ifaces, dict):
+                continue
+
+            if cacheable_iface_name in ifaces.keys():
+                cacheable.append(path)
+
+    return cacheable
+
+
+if __name__ == '__main__':
+    script_dir = os.path.dirname(os.path.realpath(__file__))
+
+    parser = argparse.ArgumentParser(
+        description='ipmi-fru-parser PIM rule generator.')
+    parser.add_argument(
+        '-o', '--output-dir', dest='outputdir',
+        default='.', help='Output directory.')
+    parser.add_argument(
+        'inventory', metavar='INVENTORY', type=str,
+        help='Path to inventory YAML.')
+
+    args = parser.parse_args()
+
+    with open(args.inventory, 'r') as fd:
+        data = yaml.safe_load(fd.read())
+
+    cacheable_iface_name = 'xyz.openbmc_project.Inventory.Decorator.Cacheable'
+    target_file = os.path.join(args.outputdir, 'ipmi-fru-rules.yaml')
+    cacheable = []
+
+    if isinstance(data, dict):
+        cacheable = get_cacheable_objs(data)
+    if cacheable:
+        with open(target_file, 'w') as out:
+            out.write(
+                Template(tmpl).render(
+                    cacheable_iface=cacheable_iface_name,
+                    cacheable_property='Cached',
+                    cacheable_cached='true',
+                    cacheable_type='boolean',
+                    on_path='/org/openbmc/sensors/BootProgress',
+                    on_iface='org.openbmc.SensorValue',
+                    on_property='value',
+                    on_value='FW Progress, Starting OS',
+                    on_type='string',
+                    off_path='/xyz/openbmc_project/state/host0',
+                    off_iface='xyz.openbmc_project.State.Host',
+                    off_property='CurrentHostState',
+                    off_value='xyz.openbmc_project.State.Host.Off',
+                    off_type='string',
+                    cacheable=cacheable))
+
+
+# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4