devices/legacy: import PL011 for aarch64

Import a PL011 implementation and use it when building for aarch64. While it's techicanlly possible to use a mmio 8250/16550 UART on aarch64, it's more common to have a PL011, and software such as EDK2 is built on top of this expectation. Signed-off-by: Sergio Lopez <[email protected]>
containers · Feb 6, 2024 · 6ef599c · 6ef599c
1 parent c16ffcf
commit 6ef599c
Show file tree

Hide file tree

Showing 7 changed files with 464 additions and 13 deletions.
diff --git a/src/arch/src/aarch64/fdt.rs b/src/arch/src/aarch64/fdt.rs
@@ -321,7 +321,8 @@ fn create_serial_node<T: DeviceInfoForFDT + Clone + Debug>(
     let irq = generate_prop32(&[GIC_FDT_IRQ_TYPE_SPI, dev_info.irq(), IRQ_TYPE_EDGE_RISING]);
 
     let node = fdt.begin_node(&format!("uart@{:x}", dev_info.addr()))?;
-    fdt.property_string("compatible", "ns16550a")?;
+    fdt.property_string("compatible", "arm,pl011")?;
+    fdt.property_string("status", "okay")?;
     fdt.property("reg", &serial_reg_prop)?;
     fdt.property_u32("clocks", CLOCK_PHANDLE)?;
     fdt.property_string("clock-names", "apb_pclk")?;

diff --git a/src/devices/src/legacy/aarch64/mod.rs b/src/devices/src/legacy/aarch64/mod.rs
@@ -0,0 +1 @@
+pub mod serial;