meson: console: Introduce console driver

It has only been tested with a system clock of 24 MHz.

It has only been implemented for the multi console API.

Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

1 files changed, 37 insertions, 0 deletions

diff --git a/include/drivers/meson/meson_console.h b/include/drivers/meson/meson_console.h
new file mode 100644
index 000000000..759571dda
--- /dev/null
+++ b/include/drivers/meson/meson_console.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef MESON_CONSOLE_H
+#define MESON_CONSOLE_H
+
+#include <console.h>
+
+#define CONSOLE_T_MESON_BASE	CONSOLE_T_DRVDATA
+
+#ifndef __ASSEMBLY__
+
+#include <stdint.h>
+
+typedef struct {
+	console_t console;
+	uintptr_t base;
+} console_meson_t;
+
+/*
+ * Initialize a new meson console instance and register it with the console
+ * framework. The |console| pointer must point to storage that will be valid
+ * for the lifetime of the console, such as a global or static local variable.
+ * Its contents will be reinitialized from scratch.
+ *
+ * NOTE: The clock is actually fixed to 24 MHz. The argument is only there in
+ * order to make this function future-proof.
+ */
+int console_meson_register(uintptr_t baseaddr, uint32_t clock, uint32_t baud,
+			   console_meson_t *console);
+
+#endif /*__ASSEMBLY__*/
+
+#endif /* MESON_CONSOLE_H */