Move top level pc80 directory to drivers/

There is no reason for this to be a top level directory.
Some stuff from lib/ should also be moved to drivers/

Change-Id: I3c2d2e127f7215eadead029cfc7442c22b26814a
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/939
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>

1 files changed, 325 insertions, 0 deletions

diff --git a/src/drivers/pc80/vga/vga.c b/src/drivers/pc80/vga/vga.c
new file mode 100644
index 0000000000..9d640419bb
--- /dev/null
+++ b/src/drivers/pc80/vga/vga.c
@@ -0,0 +1,325 @@
+/*
+ * 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! */
+}