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-rw-r--r--src/dev/arm/pl011.cc3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/dev/arm/pl011.cc b/src/dev/arm/pl011.cc
index f0c3d2d98..e00ee8351 100644
--- a/src/dev/arm/pl011.cc
+++ b/src/dev/arm/pl011.cc
@@ -91,7 +91,8 @@ Pl011::read(PacketPtr pkt)
case UART_FR:
data =
UART_FR_CTS | // Clear To Send
- (!term->dataAvailable() ? UART_FR_RXFE : 0) | // RX FIFO Empty
+ // Given we do not simulate a FIFO we are either empty or full.
+ (!term->dataAvailable() ? UART_FR_RXFE : UART_FR_RXFF) |
UART_FR_TXFE; // TX FIFO empty
DPRINTF(Uart,