897c23faca
* Implementing some serial port control in preparation to do debugging with bochs * Changed naming of io to fb_ports to finally[tm] ports
27 lines
775 B
C
27 lines
775 B
C
#include "types.h"
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#include "ports.h"
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// Serial driver interface
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#define SERIAL_COM1_BASE 0x3F8
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#define SERIAL_DATA_PORT(base) (base)
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#define SERIAL_FIFO_COMMAND_PORT(base) (base+2)
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#define SERIAL_LINE_COMMAND_PORT(base) (base+3)
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#define SERIAL_MODEM_COMMAND_PORT(base) (base+4)
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#define SERIAL_LINE_STATUS_PORT(base) (base+5)
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#define SERIAL_LINE_ENABLE 0x80
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// Default configurations for serial ports/lines/buffers etc.
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// Rational can be found here: https://littleosbook.github.io/#configuring-the-buffers
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#define SERIAL_DEFAULT_LINE_CFG 0X03
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#define SERIAL_DEFAULT_BUFFER_CFG 0xc7
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#define SERIAL_DEFAULT_MODEM_CFG 0x03
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void serial_set_buad_rate(const u16, const u16);
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void serial_configure_line(const u16, const u8);
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u8 serial_fifo_empty(const u16);
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