arm64: Add apple,s5l UART driver

This is the debug UART found in Apple SoCs. Tested on M1 MacBook Air. Registers definitions were taken from: - https://github.com/AsahiLinux/m1n1/blob/18eb02fa92789dfcdab8e00e8b1cace7ab002718/src/uart_regs.h - https://www.sistemasorp.es/blog/S3C2410%20-%20datasheet.pdf Change-Id: I2e4c8b7927fc823cedca421e1a2623b91f5ef112 Reviewed-on: https://review.haiku-os.org/c/haiku/+/10480 Reviewed-by: waddlesplash <[email protected]>
2026-03-11 23:38:03 +00:00
parent 5bb69a0f33
commit d2819f9e83
4 changed files with 177 additions and 0 deletions
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2026 Haiku, Inc. All rights reserved.
+ * Distributed under the terms of the MIT License.
+ *
+ * Authors:
+ *		Sam Roberts, [email protected]
+ */
+#ifndef __DEV_UART_SAMSUNG_H
+#define __DEV_UART_SAMSUNG_H
+
+
+#include <arch/generic/debug_uart.h>
+
+
+#define UART_KIND_SAMSUNG "samsung"
+
+
+class ArchUARTSamsung : public DebugUART {
+public:
+						ArchUARTSamsung(addr_t base, int64 clock);
+						~ArchUARTSamsung();
+
+
+			void		InitPort(uint32 baud);
+
+			void		Enable();
+			void		Disable();
+
+			int			PutChar(char c);
+			int			GetChar(bool wait);
+
+			void		FlushTx();
+			void		FlushRx();
+
+private:
+			void		Out32(int reg, uint32 data);
+			uint32		In32(int reg);
+};
+
+
+#endif