3 files changed, 43 insertions, 0 deletions
diff --git a/src/soc/cavium/common/Makefile.inc b/src/soc/cavium/common/Makefile.inc
index ada8286591..ecde220667 100644
--- a/src/soc/cavium/common/Makefile.inc
+++ b/src/soc/cavium/common/Makefile.inc
@@ -15,6 +15,8 @@
 
 ifeq ($(CONFIG_SOC_CAVIUM_COMMON),y)
 
+subdirs-y += pci
+
 CFLAGS_arm64   += -Wstack-usage=$(CONFIG_STACK_SIZE)
 
 bootblock-$(CONFIG_BOOTBLOCK_CUSTOM) += bootblock.c
diff --git a/src/soc/cavium/common/pci/Makefile.inc b/src/soc/cavium/common/pci/Makefile.inc
new file mode 100644
index 0000000000..13040527d0
--- /dev/null
+++ b/src/soc/cavium/common/pci/Makefile.inc
@@ -0,0 +1 @@
+ramstage-y += uart.c
diff --git a/src/soc/cavium/common/pci/uart.c b/src/soc/cavium/common/pci/uart.c
new file mode 100644
index 0000000000..6e41e1d3d6
--- /dev/null
+++ b/src/soc/cavium/common/pci/uart.c
@@ -0,0 +1,40 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2019 9Elements GmbH <patrick.rudolph@9elements.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <device/device.h>
+#include <soc/uart.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+
+static void cavium_uart_init(struct device *dev)
+{
+	const u8 fn = PCI_FUNC(dev->path.pci.devfn);
+
+	/* Calling uart_setup with no baudrate will do minimal HW init
+	 * enough for the kernel to not panic */
+	if (!uart_is_enabled(fn))
+		uart_setup(fn, 0);
+}
+
+static struct device_operations device_ops = {
+	.init = cavium_uart_init,
+};
+
+static const struct pci_driver soc_cavium_uart __pci_driver = {
+	.ops    = &device_ops,
+	.vendor = PCI_VENDOR_CAVIUM,
+	.device = PCI_DEVICE_ID_CAVIUM_THUNDERX_UART,
+};