fdt: Support adjusting Info::pci_bar_memory()

This allows systems using the FDT boot method to specify PCI BAR memory space. Signed-off-by: Rob Bradford <[email protected]>
cloud-hypervisor · Mar 13, 2023 · 9b14cec · 9b14cec
1 parent 38993ca
commit 9b14cec
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Showing 2 changed files with 8 additions and 0 deletions.
diff --git a/src/fdt.rs b/src/fdt.rs
@@ -14,6 +14,7 @@ pub struct StartInfo<'a> {
     fdt: Fdt<'a>,
     kernel_load_addr: u64,
     memory_layout: &'static [MemoryDescriptor],
+    pci_bar_memory: Option<MemoryEntry>,
 }
 
 impl StartInfo<'_> {
@@ -22,6 +23,7 @@ impl StartInfo<'_> {
         acpi_rsdp_addr: Option<u64>,
         kernel_load_addr: u64,
         memory_layout: &'static [MemoryDescriptor],
+        pci_bar_memory: Option<MemoryEntry>,
     ) -> Self {
         let fdt = unsafe {
             match Fdt::from_ptr(ptr) {
@@ -38,6 +40,7 @@ impl StartInfo<'_> {
             acpi_rsdp_addr,
             kernel_load_addr,
             memory_layout,
+            pci_bar_memory,
         }
     }
 
@@ -94,4 +97,8 @@ impl Info for StartInfo<'_> {
     fn memory_layout(&self) -> &'static [MemoryDescriptor] {
         self.memory_layout
     }
+
+    fn pci_bar_memory(&self) -> Option<MemoryEntry> {
+        self.pci_bar_memory
+    }
 }
diff --git a/src/main.rs b/src/main.rs
@@ -173,6 +173,7 @@ pub extern "C" fn rust64_start(x0: *const u8) -> ! {
         Some(arch::aarch64::layout::map::dram::ACPI_START as u64),
         arch::aarch64::layout::map::dram::KERNEL_START as u64,
         &crate::arch::aarch64::layout::MEM_LAYOUT[..],
+        None,
     );
 
     if let Some((base, length)) = info.find_compatible_region(&["pci-host-ecam-generic"]) {