kernel: move UART code in each arch subdir

Signed-off-by: EnderIce2 <enderice2@protonmail.com>

Kernel/arch/aarch64/core/uart.cpp

@@ -0,0 +1,46 @@
+/*
+	This file is part of Fennix Kernel.
+
+	Fennix Kernel 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, either version 3 of
+	the License, or (at your option) any later version.
+
+	Fennix Kernel 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.
+
+	You should have received a copy of the GNU General Public License
+	along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#include <uart.hpp>
+#include <io.h>
+
+namespace UART
+{
+	void Driver::DebugWrite(uint8_t Char)
+	{
+	}
+
+	uint8_t Driver::DebugRead()
+	{
+		return 0;
+	}
+
+	void Driver::TTYWrite(uint8_t Char)
+	{
+	}
+
+	uint8_t Driver::TTYRead()
+	{
+		return 0;
+	}
+
+	Driver::Driver()
+	{
+	}
+
+	Driver::~Driver() {}
+}

Kernel/arch/amd64/core/uart.cpp

@@ -45,53 +45,40 @@ namespace UART
 	{
 		if (!DebugAvailable)
 			return;
-#if defined(__amd64__) || defined(__i386__)
 		while ((inb(s_cst(uint16_t, COM1 + 5)) & SERIAL_BUFFER_EMPTY) == 0)
 			;
 		outb(COM1, Char);
-#endif
 	}
 
 	uint8_t Driver::DebugRead()
 	{
 		if (!DebugAvailable)
 			return 0;
-#if defined(__amd64__) || defined(__i386__)
 		while ((inb(s_cst(uint16_t, COM1 + 5)) & 1) == 0)
 			;
 		return inb(COM1);
-#else
-		return 0;
-#endif
 	}
 
 	void Driver::TTYWrite(uint8_t Char)
 	{
 		if (!TTYAvailable)
 			return;
-#if defined(__amd64__) || defined(__i386__)
 		while ((inb(s_cst(uint16_t, COM4 + 5)) & SERIAL_BUFFER_EMPTY) == 0)
 			;
 		outb(COM4, Char);
-#endif
 	}
 
 	uint8_t Driver::TTYRead()
 	{
 		if (!TTYAvailable)
 			return 0;
-#if defined(__amd64__) || defined(__i386__)
 		while ((inb(s_cst(uint16_t, COM4 + 5)) & 1) == 0)
 			;
 		return inb(COM4);
-#else
-		return 0;
-#endif
 	}
 
 	Driver::Driver()
 	{
-#if defined(__amd64__) || defined(__i386__)
 		auto initPort = [](uint16_t Port)
 		{
 			// Initialize the serial port
@@ -133,7 +120,6 @@ namespace UART
 			initPort(COM4);
 			TTYAvailable = true;
 		}
-#endif
 	}
 
 	Driver::~Driver() {}

Kernel/arch/arm/core/uart.cpp

@@ -0,0 +1,46 @@
+/*
+	This file is part of Fennix Kernel.
+
+	Fennix Kernel 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, either version 3 of
+	the License, or (at your option) any later version.
+
+	Fennix Kernel 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.
+
+	You should have received a copy of the GNU General Public License
+	along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#include <uart.hpp>
+#include <io.h>
+
+namespace UART
+{
+	void Driver::DebugWrite(uint8_t Char)
+	{
+	}
+
+	uint8_t Driver::DebugRead()
+	{
+		return 0;
+	}
+
+	void Driver::TTYWrite(uint8_t Char)
+	{
+	}
+
+	uint8_t Driver::TTYRead()
+	{
+		return 0;
+	}
+
+	Driver::Driver()
+	{
+	}
+
+	Driver::~Driver() {}
+}

Kernel/arch/i386/core/uart.cpp

@@ -0,0 +1,126 @@
+/*
+	This file is part of Fennix Kernel.
+
+	Fennix Kernel 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, either version 3 of
+	the License, or (at your option) any later version.
+
+	Fennix Kernel 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.
+
+	You should have received a copy of the GNU General Public License
+	along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#include <uart.hpp>
+#include <io.h>
+
+namespace UART
+{
+	enum SerialPorts
+	{
+		COM1 = 0x3F8,
+		COM2 = 0x2F8,
+		COM3 = 0x3E8,
+		COM4 = 0x2E8,
+		COM5 = 0x5F8,
+		COM6 = 0x4F8,
+		COM7 = 0x5E8,
+		COM8 = 0x4E8
+	};
+
+#define SERIAL_ENABLE_DLAB 0x80
+#define SERIAL_RATE_115200_LO 0x01
+#define SERIAL_RATE_115200_HI 0x00
+#define SERIAL_RATE_57600_LO 0x02
+#define SERIAL_RATE_57600_HI 0x00
+#define SERIAL_RATE_38400_LO 0x03
+#define SERIAL_RATE_38400_HI 0x00
+#define SERIAL_BUFFER_EMPTY 0x20
+
+	void Driver::DebugWrite(uint8_t Char)
+	{
+		if (!DebugAvailable)
+			return;
+		while ((inb(s_cst(uint16_t, COM1 + 5)) & SERIAL_BUFFER_EMPTY) == 0)
+			;
+		outb(COM1, Char);
+	}
+
+	uint8_t Driver::DebugRead()
+	{
+		if (!DebugAvailable)
+			return 0;
+		while ((inb(s_cst(uint16_t, COM1 + 5)) & 1) == 0)
+			;
+		return inb(COM1);
+	}
+
+	void Driver::TTYWrite(uint8_t Char)
+	{
+		if (!TTYAvailable)
+			return;
+		while ((inb(s_cst(uint16_t, COM4 + 5)) & SERIAL_BUFFER_EMPTY) == 0)
+			;
+		outb(COM4, Char);
+	}
+
+	uint8_t Driver::TTYRead()
+	{
+		if (!TTYAvailable)
+			return 0;
+		while ((inb(s_cst(uint16_t, COM4 + 5)) & 1) == 0)
+			;
+		return inb(COM4);
+	}
+
+	Driver::Driver()
+	{
+		auto initPort = [](uint16_t Port)
+		{
+			// Initialize the serial port
+			outb(s_cst(uint16_t, Port + 1), 0x00);					// Disable all interrupts
+			outb(s_cst(uint16_t, Port + 3), SERIAL_ENABLE_DLAB);	// Enable DLAB (set baud rate divisor)
+			outb(s_cst(uint16_t, Port + 0), SERIAL_RATE_115200_LO); // Set divisor to 1 (lo byte) 115200 baud
+			outb(s_cst(uint16_t, Port + 1), SERIAL_RATE_115200_HI); //                  (hi byte)
+			outb(s_cst(uint16_t, Port + 3), 0x03);					// 8 bits, no parity, one stop bit
+			outb(s_cst(uint16_t, Port + 2), 0xC7);					// Enable FIFO, clear them, with 14-byte threshold
+			outb(s_cst(uint16_t, Port + 4), 0x0B);					// IRQs enabled, RTS/DSR set
+
+			/* FIXME  https://wiki.osdev.org/Serial_Ports */
+			// outb(s_cst(uint16_t, Port + 0), 0x1E);
+			// outb(s_cst(uint16_t, Port + 0), 0xAE);
+			// Check if the serial port is faulty.
+			// if (inb(s_cst(uint16_t, Port + 0)) != 0xAE)
+			// {
+			//     static int once = 0;
+			//     if (!once++)
+			//         warn("Serial port %#lx is faulty.", Port);
+			//     // serialports[Port] = false; // ignore for now
+			//     // return;
+			// }
+
+			// Set to normal operation mode.
+			outb(s_cst(uint16_t, Port + 4), 0x0F);
+		};
+
+		uint8_t com = inb(COM1);
+		if (com != 0xFF)
+		{
+			initPort(COM1);
+			DebugAvailable = true;
+		}
+
+		com = inb(COM4);
+		if (com != 0xFF)
+		{
+			initPort(COM4);
+			TTYAvailable = true;
+		}
+	}
+
+	Driver::~Driver() {}
+}