65 lines
2.2 KiB
C
65 lines
2.2 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2007 Luc Verhaegen <libv@skynet.be>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef VGA_IO_H
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#define VGA_IO_H
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/*
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* All IO necessary to poke VGA registers.
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*/
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/* VGA Enable */
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unsigned char vga_enable_read(void);
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void vga_enable_write(unsigned char value);
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void vga_enable_mask(unsigned char value, unsigned char mask);
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/* Miscellaneous register */
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unsigned char vga_misc_read(void);
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void vga_misc_write(unsigned char value);
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void vga_misc_mask(unsigned char value, unsigned char mask);
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/* Sequencer registers. */
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unsigned char vga_sr_read(unsigned char index);
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void vga_sr_write(unsigned char index, unsigned char value);
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void vga_sr_mask(unsigned char index, unsigned char value, unsigned char mask);
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/* CR registers. */
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unsigned char vga_cr_read(unsigned char index);
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void vga_cr_write(unsigned char index, unsigned char value);
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void vga_cr_mask(unsigned char index, unsigned char value, unsigned char mask);
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/* Attribute registers. */
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unsigned char vga_ar_read(unsigned char index);
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void vga_ar_write(unsigned char index, unsigned char value);
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void vga_ar_mask(unsigned char index, unsigned char value, unsigned char mask);
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/* Graphics registers. */
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unsigned char vga_gr_read(unsigned char index);
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void vga_gr_write(unsigned char index, unsigned char value);
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void vga_gr_mask(unsigned char index, unsigned char value, unsigned char mask);
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/* DAC functions. */
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void vga_palette_enable(void);
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void vga_palette_disable(void);
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unsigned char vga_dac_mask_read(void);
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void vga_dac_mask_write(unsigned char mask);
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void vga_dac_read_address(unsigned char address);
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void vga_dac_write_address(unsigned char address);
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unsigned char vga_dac_data_read(void);
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void vga_dac_data_write(unsigned char data);
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#endif /* VGA_IO_H */
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