tool: allow specification of PD domain in SDF

This commit adds a "domain" attribute to protection domains in the SDF
XML. If a PD has a certain domain set, then the loader will invoke the
domain cap to set the PDs domain at boot.

Signed-off-by: James Archer <j.archer@unsw.edu.au>

tool/microkit/src/main.rs

@@ -2339,6 +2339,14 @@ fn build_system(
         }));
     }
 
+    for (pd_idx, pd) in system.protection_domains.iter().enumerate() {
+        system_invocations.push(Invocation::new(InvocationArgs::DomainSetSet {
+            domain_set: DOMAIN_CAP_ADDRESS,
+            domain: pd.domain as u8,
+            tcb: pd_tcb_objs[pd_idx].cap_addr,
+        }));
+    }
+
     // Set VSpace and CSpace
     let num_set_space_invocations = system.protection_domains.len() + virtual_machines.len();
     let mut set_space_invocation = Invocation::new(InvocationArgs::TcbSetSpace {

tool/microkit/src/sysxml.rs

@@ -168,6 +168,7 @@ pub struct ProtectionDomain {
     pub parent: Option<usize>,
     /// Location in the parsed SDF file
     text_pos: roxmltree::TextPos,
+    pub domain: u64,
 }
 
 #[derive(Debug, PartialEq, Eq, Hash)]
@@ -277,7 +278,9 @@ impl ProtectionDomain {
         node: &roxmltree::Node,
         is_child: bool,
     ) -> Result<ProtectionDomain, String> {
-        let mut attrs = vec!["name", "priority", "pp", "budget", "period", "passive"];
+        let mut attrs = vec![
+            "name", "priority", "pp", "budget", "period", "passive", "domain",
+        ];
         if is_child {
             attrs.push("id");
         }
@@ -346,6 +349,12 @@ impl ProtectionDomain {
             false
         };
 
+        let domain = if let Some(xml_domain) = node.attribute("domain") {
+            sdf_parse_number(xml_domain, node)?
+        } else {
+            0
+        };
+
         let mut maps = Vec::new();
         let mut irqs = Vec::new();
         let mut setvars = Vec::new();
@@ -508,6 +517,7 @@ impl ProtectionDomain {
             has_children,
             parent: None,
             text_pos: xml_sdf.doc.text_pos_at(node.range().start),
+            domain,
         })
     }
 }