From fb1bdf7c3eafb97a47922692e9bb640fbf5a4dab Mon Sep 17 00:00:00 2001
From: Jeremy Soller <jackpot51@gmail.com>
Date: Thu, 25 Aug 2022 20:10:35 -0600
Subject: [PATCH] Ignore null bytes from pl011 uart

---
 src/arch/aarch64/device/uart_pl011.rs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/arch/aarch64/device/uart_pl011.rs b/src/arch/aarch64/device/uart_pl011.rs
index 38f74e8..e5982ca 100644
--- a/src/arch/aarch64/device/uart_pl011.rs
+++ b/src/arch/aarch64/device/uart_pl011.rs
@@ -136,7 +136,10 @@ impl SerialPort {
 
     pub fn receive(&mut self) {
         while self.line_sts().contains(UartFrFlags::RXFF) {
-            debug_input(self.read_reg(self.data_reg) as u8);
+            let c = self.read_reg(self.data_reg) as u8;
+            if c != 0 {
+                debug_input(c);
+            }
         }
         debug_notify();
     }