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-rw-r--r--src/soc/cavium/cn81xx/uart.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/src/soc/cavium/cn81xx/uart.c b/src/soc/cavium/cn81xx/uart.c
index 9fb83871ad..7a9ea3a158 100644
--- a/src/soc/cavium/cn81xx/uart.c
+++ b/src/soc/cavium/cn81xx/uart.c
@@ -233,6 +233,14 @@ int uart_setup(const size_t bus, int baudrate)
write64(&uart->uctl_ctl, ctl.u);
/**
+ * Exit here if the UART is not going to be used in coreboot.
+ * The previous initialization steps are sufficient to make the Linux
+ * kernel not panic.
+ */
+ if (!baudrate)
+ return 0;
+
+ /**
* 7. Initialize the integer and fractional baud rate divider registers
* UARTIBRD and UARTFBRD as follows:
* a. Baud Rate Divisor = UARTCLK/(16xBaud Rate) = BRDI + BRDF