1 files changed, 52 insertions, 0 deletions
diff --git a/arch/sandbox/include/asm/serial.h b/arch/sandbox/include/asm/serial.h
new file mode 100644
index 00000000000..16589a1b219
--- /dev/null
+++ b/arch/sandbox/include/asm/serial.h
@@ -0,0 +1,52 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright 2020 Google LLC
+ * Written by Simon Glass <sjg@chromium.org>
+ */
+
+#ifndef __asm_serial_h
+#define __asm_serial_h
+
+#include <dt-structs.h>
+
+struct sandbox_serial_plat {
+#if CONFIG_IS_ENABLED(OF_PLATDATA)
+	struct dtd_sandbox_serial dtplat;
+#endif
+	int colour;	/* Text colour to use for output, -1 for none */
+};
+
+/**
+ * sandbox_serial_written() - Get the total number of characters written
+ *
+ * This returns the number of characters written by the sandbox serial
+ * device. It is intended for performing tests of the serial subsystem
+ * where a console buffer cannot be used. The absolute number should not be
+ * relied upon; call this function twice and compare the difference.
+ *
+ * Return: The number of characters written
+ */
+size_t sandbox_serial_written(void);
+
+/**
+ * sandbox_serial_endisable() - Enable or disable serial output
+ * @enabled: Whether serial output should be enabled or not
+ *
+ * This allows tests to enable or disable the sandbox serial output. All
+ * processes relating to writing output (except the actual writing) will be
+ * performed.
+ */
+void sandbox_serial_endisable(bool enabled);
+
+/**
+ * struct sandbox_serial_priv - Private data for this driver
+ *
+ * @buf: holds input characters available to be read by this driver
+ */
+struct sandbox_serial_priv {
+	struct membuff buf;
+	char serial_buf[16];
+	bool start_of_line;
+};
+
+#endif /* __asm_serial_h */