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Diffstat (limited to 'src/pc80/vga/vga.c')
-rw-r--r--src/pc80/vga/vga.c325
1 files changed, 0 insertions, 325 deletions
diff --git a/src/pc80/vga/vga.c b/src/pc80/vga/vga.c
deleted file mode 100644
index 9d640419bb..0000000000
--- a/src/pc80/vga/vga.c
+++ /dev/null
@@ -1,325 +0,0 @@
-/*
- * Copyright (C) 2007-2009 Luc Verhaegen <libv@skynet.be>
- *
- * This program 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 2 of the License, or (at your option)
- * any later version.
- *
- * This program 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
- * this program; if not, write to the Free Software Foundation, Inc., 51
- * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <pc80/vga.h>
-#include <pc80/vga_io.h>
-
-#include <string.h>
-#include "vga.h"
-
-/*
- * pci io enable should've happened before
- */
-void
-vga_io_init(void)
-{
- vga_enable_mask(0x01, 0x01);
-
- /* cr io is at 0x3D4/0x3D5 */
- vga_misc_mask(0x01, 0x01);
-
- /* clear cr0-7 protection */
- vga_cr_mask(0x11, 0x00, 0x80);
-}
-
-/*
- *
- */
-static void
-vga_fb_init(void)
-{
- vga_sr_write(0x02, 0x03);
- vga_sr_write(0x03, 0x00);
- vga_sr_write(0x04, 0x02); /* access all 256kB */
-
- vga_gr_write(0x00, 0x00);
- vga_gr_write(0x01, 0x00);
- vga_gr_write(0x02, 0x00);
- vga_gr_write(0x03, 0x00);
- vga_gr_write(0x04, 0x00);
- vga_gr_write(0x05, 0x10);
- vga_gr_write(0x06, 0x0E); /* map at 0xB8000 */
- vga_gr_write(0x07, 0x00);
- vga_gr_write(0x08, 0xFF);
-
- /* o/e enable: ram enable */
- vga_misc_mask(0x22, 0x22);
-}
-
-/*
- *
- */
-static void
-vga_fb_clear(void)
-{
- memset((void *)VGA_FB, 0x00, 0x8000);
-}
-
-/*
- *
- */
-static void
-vga_palette_init(void)
-{
- unsigned int i;
-
- /* set up attribute registers */
- for (i = 0; i < 0x10; i++)
- vga_ar_write(i, i);
-
- vga_ar_write(0x10, 0x0c);
- vga_ar_write(0x11, 0x00);
- vga_ar_write(0x12, 0x0F);
- vga_ar_write(0x13, 0x08);
- vga_ar_write(0x14, 0x00);
-
- vga_palette_disable();
-
- /* load actual palette */
- vga_dac_mask_write(0xFF);
-
- for (i = 0; i < 0x100; i++) {
- vga_dac_write_address(i);
- vga_dac_data_write(default_vga_palette[i].red);
- vga_dac_data_write(default_vga_palette[i].green);
- vga_dac_data_write(default_vga_palette[i].blue);
- }
-}
-
-/*
- *
- */
-static void
-vga_mode_set(int hdisplay, int hblankstart, int hsyncstart, int hsyncend,
- int hblankend, int htotal, int vdisplay, int vblankstart,
- int vsyncstart, int vsyncend, int vblankend, int vtotal,
- int stride)
-{
- /* htotal: 2080 */
- htotal /= 8;
- htotal -= 5;
- vga_cr_write(0x00, htotal);
-
- /* hdisplay: 2048 */
- hdisplay /= 8;
- hdisplay -= 1;
- vga_cr_write(0x01, hdisplay);
-
- /* hblankstart: 2048 */
- hblankstart /= 8;
- hblankstart -= 1;
- vga_cr_write(0x02, hblankstart);
-
- /* hblankend: hblankstart + 512 */
- hblankend /= 8;
- hblankend -= 1;
- vga_cr_mask(0x03, hblankend, 0x1F);
- vga_cr_mask(0x05, hblankend << 2, 0x80);
-
- /* hsyncstart: 255 * 8: 2040 */
- vga_cr_write(0x04, hsyncstart / 8);
-
- /* hsyncend: hsyncstart + 255 */
- vga_cr_mask(0x05, hsyncend / 8, 0x1F);
-
- /* vtotal: 1025 */
- vtotal -= 2;
- vga_cr_write(0x06, vtotal);
- vga_cr_mask(0x07, vtotal >> 8, 0x01);
- vga_cr_mask(0x07, vtotal >> 4, 0x20);
-
- /* vdisplay: 1024 */
- vdisplay -= 1;
- vga_cr_write(0x12, vdisplay);
- vga_cr_mask(0x07, vdisplay >> 7, 0x02);
- vga_cr_mask(0x07, vdisplay >> 3, 0x40);
-
- /* vblankstart: 1024 */
- vblankstart -= 1;
- vga_cr_write(0x15, vblankstart);
- vga_cr_mask(0x07, vblankstart >> 5, 0x08);
- vga_cr_mask(0x09, vblankstart >> 4, 0x20);
-
- /* vblankend: vblankstart + 256 */
- vblankend -= 1;
- vga_cr_write(0x16, vblankend);
-
- /* vsyncstart: 1023 */
- vga_cr_write(0x10, vsyncstart);
- vga_cr_mask(0x07, vsyncstart >> 6, 0x04);
- vga_cr_mask(0x07, vsyncstart >> 2, 0x80);
-
- /* vsyncend: vsyncstart + 16 */
- vga_cr_mask(0x11, vsyncend, 0x0F);
-
- /* stride */
- vga_cr_write(0x13, stride / 8);
-
- /* line compare */
- vga_cr_write(0x18, 0xFF);
- vga_cr_mask(0x07, 0x10, 0x10);
- vga_cr_mask(0x09, 0x40, 0x40);
-
- vga_misc_mask(0x44, 0xCC); /* set up clock: 27mhz and h/vsync */
-
- vga_cr_mask(0x09, 0x00, 0x80); /* disable doublescan */
-}
-
-static void
-vga_font_8x16_load(void)
-{
- unsigned char *p;
- int i, j;
- unsigned char sr2, sr4, gr5, gr6;
-
-#define height 16
-#define count 256
-
- sr2 = vga_sr_read(0x02);
- sr4 = vga_sr_read(0x04);
- gr5 = vga_gr_read(0x05);
- gr6 = vga_gr_read(0x06);
-
- /* disable odd/even */
- vga_sr_mask(0x04, 0x04, 0x04);
- vga_gr_mask(0x05, 0x00, 0x10);
- vga_gr_mask(0x06, 0x00, 0x02);
-
- /* plane 2 */
- vga_sr_write(0x02, 0x04);
- p = (unsigned char *) VGA_FB;
- for (i = 0; i < count; i++) {
- for (j = 0; j < 32; j++) {
- if (j < height)
- *p = vga_font_8x16[i][j];
- else
- *p = 0x00;
- p++;
- }
- }
-
- vga_gr_write(0x06, gr6);
- vga_gr_write(0x05, gr5);
- vga_sr_write(0x04, sr4);
- vga_sr_write(0x02, sr2);
-
- /* set up font size */
- vga_cr_mask(0x09, 16 - 1, 0x1F);
-}
-
-/*
- *
- */
-void
-vga_cursor_enable(int enable)
-{
- if (enable)
- vga_cr_mask(0x0A, 0x00, 0x20);
- else
- vga_cr_mask(0x0A, 0x20, 0x20);
-}
-
-/*
- *
- */
-void
-vga_cursor_reset(void)
-{
- vga_cr_write(0x0A, 0x2E);
- vga_cr_write(0x0B, 0x0E);
- vga_cr_write(0x0E, 0x00);
- vga_cr_write(0x0F, 0x00);
-}
-
-/*
- *
- */
-void
-vga_cursor_set(unsigned int line, unsigned int character)
-{
- unsigned int offset = (80 * line + character) & 0xFFFF;
-
- vga_cr_write(0x0A, 0x0E);
- vga_cr_write(0x0B, 0x0E);
- vga_cr_write(0x0E, offset >> 8);
- vga_cr_write(0x0F, offset & 0xFF);
-}
-
-/*
- *
- */
-void
-vga_frame_set(unsigned int line, unsigned int character)
-{
- unsigned int offset = (80 * line + character) & 0xFFFF;
-
- vga_cr_write(0x0C, offset >> 8);
- vga_cr_write(0x0D, offset & 0xFF);
-}
-
-/*
- * simply fills a line with the given string.
- */
-void
-vga_line_write(unsigned int line, const char *string)
-{
- unsigned short *p = (unsigned short *) VGA_FB + (80 * line);
- int i, len = strlen(string);
-
- for (i = 0; i < 80; i++) {
- if (i < len)
- p[i] = 0x0F00 | string[i];
- else
- p[i] = 0x0F00;
- }
-}
-
-/*
- * set up everything to get a basic 80x25 textmode.
- */
-void
-vga_textmode_init(void)
-{
- vga_sr_write(0x00, 0x01); /* clear reset */
- vga_sr_write(0x01, 0x00);
-
- /* set up cr */
- vga_cr_mask(0x03, 0x80, 0xE0);
- vga_cr_mask(0x05, 0x00, 0x60);
-
- vga_cr_write(0x08, 0x00);
-
- vga_cr_write(0x14, 0x00); /* */
-
- vga_cr_write(0x17, 0x23);
-
- vga_palette_init();
-
- vga_mode_set(640, 648, 680, 776, 792, 800,
- 400, 407, 412, 414, 442, 449, 320);
-
- vga_cursor_reset();
- vga_frame_set(0, 0);
-
- vga_fb_init();
- vga_fb_clear();
- vga_font_8x16_load();
-
- vga_sr_mask(0x00, 0x02, 0x02); /* take us out of reset */
- vga_cr_mask(0x17, 0x80, 0x80); /* sync! */
-}
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