Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

7 files changed, 3231 insertions, 0 deletions

diff --git a/drivers/video/console/Kconfig b/drivers/video/console/Kconfig
new file mode 100644
index 000000000..30577b1d3
--- /dev/null
+++ b/drivers/video/console/Kconfig
@@ -0,0 +1,153 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Video configuration
+#
+
+menu "Console display driver support"
+
+config VGA_CONSOLE
+	bool "VGA text console" if EXPERT || !X86
+	depends on !4xx && !PPC_8xx && !SPARC && !M68K && !PARISC &&  !SUPERH && \
+		(!ARM || ARCH_FOOTBRIDGE || ARCH_INTEGRATOR || ARCH_NETWINDER) && \
+		!ARM64 && !ARC && !MICROBLAZE && !OPENRISC && !S390 && !UML
+	select APERTURE_HELPERS if (DRM || FB || VFIO_PCI_CORE)
+	default y
+	help
+	  Saying Y here will allow you to use Linux in text mode through a
+	  display that complies with the generic VGA standard. Virtually
+	  everyone wants that.
+
+	  The program SVGATextMode can be used to utilize SVGA video cards to
+	  their full potential in text mode. Download it from
+	  <ftp://ibiblio.org/pub/Linux/utils/console/>.
+
+	  Say Y.
+
+config MDA_CONSOLE
+	depends on !M68K && !PARISC && ISA
+	tristate "MDA text console (dual-headed)"
+	help
+	  Say Y here if you have an old MDA or monochrome Hercules graphics
+	  adapter in your system acting as a second head ( = video card). You
+	  will then be able to use two monitors with your Linux system. Do not
+	  say Y here if your MDA card is the primary card in your system; the
+	  normal VGA driver will handle it.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called mdacon.
+
+	  If unsure, say N.
+
+config SGI_NEWPORT_CONSOLE
+	tristate "SGI Newport Console support"
+	depends on SGI_IP22 && HAS_IOMEM
+	select FONT_SUPPORT
+	help
+	  Say Y here if you want the console on the Newport aka XL graphics
+	  card of your Indy.  Most people say Y here.
+
+config DUMMY_CONSOLE
+	bool
+	default y
+
+config DUMMY_CONSOLE_COLUMNS
+	int "Initial number of console screen columns"
+	depends on DUMMY_CONSOLE && !ARM
+	default 160 if PARISC
+	default 80
+	help
+	  On PA-RISC, the default value is 160, which should fit a 1280x1024
+	  monitor.
+	  Select 80 if you use a 640x480 resolution by default.
+
+config DUMMY_CONSOLE_ROWS
+	int "Initial number of console screen rows"
+	depends on DUMMY_CONSOLE && !ARM
+	default 64 if PARISC
+	default 25
+	help
+	  On PA-RISC, the default value is 64, which should fit a 1280x1024
+	  monitor.
+	  Select 25 if you use a 640x480 resolution by default.
+
+config FRAMEBUFFER_CONSOLE
+	bool "Framebuffer Console support"
+	depends on FB_CORE && !UML
+	default DRM_FBDEV_EMULATION
+	select VT_HW_CONSOLE_BINDING
+	select CRC32
+	select FONT_SUPPORT
+	help
+	  Low-level framebuffer-based console driver.
+
+config FRAMEBUFFER_CONSOLE_LEGACY_ACCELERATION
+	bool "Enable legacy fbcon hardware acceleration code"
+	depends on FRAMEBUFFER_CONSOLE
+	default y if PARISC
+	default n
+	help
+	  This option enables the fbcon (framebuffer text-based) hardware
+	  acceleration for graphics drivers which were written for the fbdev
+	  graphics interface.
+
+	  On modern machines, on mainstream machines (like x86-64) or when
+	  using a modern Linux distribution those fbdev drivers usually aren't used.
+	  So enabling this option wouldn't have any effect, which is why you want
+	  to disable this option on such newer machines.
+
+	  If you compile this kernel for older machines which still require the
+	  fbdev drivers, you may want to say Y.
+
+	  If unsure, select n.
+
+config FRAMEBUFFER_CONSOLE_DETECT_PRIMARY
+       bool "Map the console to the primary display device"
+       depends on FRAMEBUFFER_CONSOLE
+       default n
+	help
+	 If this option is selected, the framebuffer console will
+	 automatically select the primary display device (if the architecture
+	 supports this feature).  Otherwise, the framebuffer console will
+	 always select the first framebuffer driver that is loaded. The latter
+	 is the default behavior.
+
+	 You can always override the automatic selection of the primary device
+	 by using the fbcon=map: boot option.
+
+	 If unsure, select n.
+
+config FRAMEBUFFER_CONSOLE_ROTATION
+       bool "Framebuffer Console Rotation"
+       depends on FRAMEBUFFER_CONSOLE
+       help
+	 Enable display rotation for the framebuffer console.  This is done
+	 in software and may be significantly slower than a normally oriented
+	 display.  Note that the rotation is done at the console level only
+	 such that other users of the framebuffer will remain normally
+	 oriented.
+
+config FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER
+	bool "Framebuffer Console Deferred Takeover"
+	depends on FB=y && FRAMEBUFFER_CONSOLE && DUMMY_CONSOLE
+	help
+	  If enabled this defers the framebuffer console taking over the
+	  console from the dummy console until the first text is displayed on
+	  the console. This is useful in combination with the "quiet" kernel
+	  commandline option to keep the framebuffer contents initially put up
+	  by the firmware in place, rather then replacing the contents with a
+	  black screen as soon as fbcon loads.
+
+config STI_CONSOLE
+	bool "STI text console"
+	depends on PARISC && HAS_IOMEM
+	select FONT_SUPPORT
+	select CRC32
+	select STI_CORE
+	default y
+	help
+	  The STI console is the builtin display/keyboard on HP-PARISC
+	  machines.  Say Y here to build support for it into your kernel.
+	  The alternative is to use your primary serial port as a console.
+
+endmenu
+
diff --git a/drivers/video/console/Makefile b/drivers/video/console/Makefile
new file mode 100644
index 000000000..fd79016a0
--- /dev/null
+++ b/drivers/video/console/Makefile
@@ -0,0 +1,10 @@
+# SPDX-License-Identifier: GPL-2.0
+# Makefile for the Linux graphics to console drivers.
+# 5 Aug 1999, James Simmons, <mailto:jsimmons@users.sf.net>
+# Rewritten to use lists instead of if-statements.
+
+obj-$(CONFIG_DUMMY_CONSOLE)       += dummycon.o
+obj-$(CONFIG_SGI_NEWPORT_CONSOLE) += newport_con.o
+obj-$(CONFIG_STI_CONSOLE)         += sticon.o
+obj-$(CONFIG_VGA_CONSOLE)         += vgacon.o
+obj-$(CONFIG_MDA_CONSOLE)         += mdacon.o
diff --git a/drivers/video/console/dummycon.c b/drivers/video/console/dummycon.c
new file mode 100644
index 000000000..f1711b2f9
--- /dev/null
+++ b/drivers/video/console/dummycon.c
@@ -0,0 +1,146 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ *  linux/drivers/video/dummycon.c -- A dummy console driver
+ *
+ *  To be used if there's no other console driver (e.g. for plain VGA text)
+ *  available, usually until fbcon takes console over.
+ */
+
+#include <linux/types.h>
+#include <linux/kdev_t.h>
+#include <linux/console.h>
+#include <linux/vt_kern.h>
+#include <linux/screen_info.h>
+#include <linux/init.h>
+#include <linux/module.h>
+
+/*
+ *  Dummy console driver
+ */
+
+#if defined(__arm__)
+#define DUMMY_COLUMNS	screen_info.orig_video_cols
+#define DUMMY_ROWS	screen_info.orig_video_lines
+#else
+/* set by Kconfig. Use 80x25 for 640x480 and 160x64 for 1280x1024 */
+#define DUMMY_COLUMNS	CONFIG_DUMMY_CONSOLE_COLUMNS
+#define DUMMY_ROWS	CONFIG_DUMMY_CONSOLE_ROWS
+#endif
+
+#ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER
+/* These are both protected by the console_lock */
+static RAW_NOTIFIER_HEAD(dummycon_output_nh);
+static bool dummycon_putc_called;
+
+void dummycon_register_output_notifier(struct notifier_block *nb)
+{
+	WARN_CONSOLE_UNLOCKED();
+
+	raw_notifier_chain_register(&dummycon_output_nh, nb);
+
+	if (dummycon_putc_called)
+		nb->notifier_call(nb, 0, NULL);
+}
+
+void dummycon_unregister_output_notifier(struct notifier_block *nb)
+{
+	WARN_CONSOLE_UNLOCKED();
+
+	raw_notifier_chain_unregister(&dummycon_output_nh, nb);
+}
+
+static void dummycon_putc(struct vc_data *vc, int c, int ypos, int xpos)
+{
+	WARN_CONSOLE_UNLOCKED();
+
+	dummycon_putc_called = true;
+	raw_notifier_call_chain(&dummycon_output_nh, 0, NULL);
+}
+
+static void dummycon_putcs(struct vc_data *vc, const unsigned short *s,
+			   int count, int ypos, int xpos)
+{
+	int i;
+
+	if (!dummycon_putc_called) {
+		/* Ignore erases */
+		for (i = 0 ; i < count; i++) {
+			if (s[i] != vc->vc_video_erase_char)
+				break;
+		}
+		if (i == count)
+			return;
+
+		dummycon_putc_called = true;
+	}
+
+	raw_notifier_call_chain(&dummycon_output_nh, 0, NULL);
+}
+
+static int dummycon_blank(struct vc_data *vc, int blank, int mode_switch)
+{
+	/* Redraw, so that we get putc(s) for output done while blanked */
+	return 1;
+}
+#else
+static void dummycon_putc(struct vc_data *vc, int c, int ypos, int xpos) { }
+static void dummycon_putcs(struct vc_data *vc, const unsigned short *s,
+			   int count, int ypos, int xpos) { }
+static int dummycon_blank(struct vc_data *vc, int blank, int mode_switch)
+{
+	return 0;
+}
+#endif
+
+static const char *dummycon_startup(void)
+{
+    return "dummy device";
+}
+
+static void dummycon_init(struct vc_data *vc, int init)
+{
+    vc->vc_can_do_color = 1;
+    if (init) {
+	vc->vc_cols = DUMMY_COLUMNS;
+	vc->vc_rows = DUMMY_ROWS;
+    } else
+	vc_resize(vc, DUMMY_COLUMNS, DUMMY_ROWS);
+}
+
+static void dummycon_deinit(struct vc_data *vc) { }
+static void dummycon_clear(struct vc_data *vc, int sy, int sx, int height,
+			   int width) { }
+static void dummycon_cursor(struct vc_data *vc, int mode) { }
+
+static bool dummycon_scroll(struct vc_data *vc, unsigned int top,
+			    unsigned int bottom, enum con_scroll dir,
+			    unsigned int lines)
+{
+	return false;
+}
+
+static int dummycon_switch(struct vc_data *vc)
+{
+	return 0;
+}
+
+/*
+ *  The console `switch' structure for the dummy console
+ *
+ *  Most of the operations are dummies.
+ */
+
+const struct consw dummy_con = {
+	.owner =		THIS_MODULE,
+	.con_startup =	dummycon_startup,
+	.con_init =		dummycon_init,
+	.con_deinit =	dummycon_deinit,
+	.con_clear =	dummycon_clear,
+	.con_putc =		dummycon_putc,
+	.con_putcs =	dummycon_putcs,
+	.con_cursor =	dummycon_cursor,
+	.con_scroll =	dummycon_scroll,
+	.con_switch =	dummycon_switch,
+	.con_blank =	dummycon_blank,
+};
+EXPORT_SYMBOL_GPL(dummy_con);
diff --git a/drivers/video/console/mdacon.c b/drivers/video/console/mdacon.c
new file mode 100644
index 000000000..ef29b3219
--- /dev/null
+++ b/drivers/video/console/mdacon.c
@@ -0,0 +1,578 @@
+/*
+ *  linux/drivers/video/mdacon.c -- Low level MDA based console driver
+ *
+ *	(c) 1998 Andrew Apted <ajapted@netspace.net.au>
+ *
+ *      including portions (c) 1995-1998 Patrick Caulfield.
+ *
+ *      slight improvements (c) 2000 Edward Betts <edward@debian.org>
+ *
+ *  This file is based on the VGA console driver (vgacon.c):
+ *	
+ *	Created 28 Sep 1997 by Geert Uytterhoeven
+ *
+ *	Rewritten by Martin Mares <mj@ucw.cz>, July 1998
+ *
+ *  and on the old console.c, vga.c and vesa_blank.c drivers:
+ *
+ *	Copyright (C) 1991, 1992  Linus Torvalds
+ *			    1995  Jay Estabrook
+ *
+ *  This file is subject to the terms and conditions of the GNU General Public
+ *  License.  See the file COPYING in the main directory of this archive for
+ *  more details.
+ *
+ *  Changelog:
+ *  Paul G. (03/2001) Fix mdacon= boot prompt to use __setup().
+ */
+
+#include <linux/types.h>
+#include <linux/fs.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/console.h>
+#include <linux/string.h>
+#include <linux/kd.h>
+#include <linux/vt_kern.h>
+#include <linux/vt_buffer.h>
+#include <linux/selection.h>
+#include <linux/spinlock.h>
+#include <linux/ioport.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+
+#include <asm/io.h>
+#include <asm/vga.h>
+
+static DEFINE_SPINLOCK(mda_lock);
+
+/* description of the hardware layout */
+
+static u16		*mda_vram_base;		/* Base of video memory */
+static unsigned long	mda_vram_len;		/* Size of video memory */
+static unsigned int	mda_num_columns;	/* Number of text columns */
+static unsigned int	mda_num_lines;		/* Number of text lines */
+
+static unsigned int	mda_index_port;		/* Register select port */
+static unsigned int	mda_value_port;		/* Register value port */
+static unsigned int	mda_mode_port;		/* Mode control port */
+static unsigned int	mda_status_port;	/* Status and Config port */
+static unsigned int	mda_gfx_port;		/* Graphics control port */
+
+/* current hardware state */
+
+static int	mda_cursor_loc=-1;
+static int	mda_cursor_size_from=-1;
+static int	mda_cursor_size_to=-1;
+
+static enum { TYPE_MDA, TYPE_HERC, TYPE_HERCPLUS, TYPE_HERCCOLOR } mda_type;
+static char *mda_type_name;
+
+/* console information */
+
+static int	mda_first_vc = 13;
+static int	mda_last_vc  = 16;
+
+static struct vc_data	*mda_display_fg = NULL;
+
+module_param(mda_first_vc, int, 0);
+MODULE_PARM_DESC(mda_first_vc, "First virtual console. Default: 13");
+module_param(mda_last_vc, int, 0);
+MODULE_PARM_DESC(mda_last_vc, "Last virtual console. Default: 16");
+
+/* MDA register values
+ */
+
+#define MDA_CURSOR_BLINKING	0x00
+#define MDA_CURSOR_OFF		0x20
+#define MDA_CURSOR_SLOWBLINK	0x60
+
+#define MDA_MODE_GRAPHICS	0x02
+#define MDA_MODE_VIDEO_EN	0x08
+#define MDA_MODE_BLINK_EN	0x20
+#define MDA_MODE_GFX_PAGE1	0x80
+
+#define MDA_STATUS_HSYNC	0x01
+#define MDA_STATUS_VSYNC	0x80
+#define MDA_STATUS_VIDEO	0x08
+
+#define MDA_CONFIG_COL132	0x08
+#define MDA_GFX_MODE_EN		0x01
+#define MDA_GFX_PAGE_EN		0x02
+
+
+/*
+ * MDA could easily be classified as "pre-dinosaur hardware".
+ */
+
+static void write_mda_b(unsigned int val, unsigned char reg)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&mda_lock, flags);	
+
+	outb_p(reg, mda_index_port); 
+	outb_p(val, mda_value_port);
+
+	spin_unlock_irqrestore(&mda_lock, flags);
+}
+
+static void write_mda_w(unsigned int val, unsigned char reg)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&mda_lock, flags);
+
+	outb_p(reg,   mda_index_port); outb_p(val >> 8,   mda_value_port);
+	outb_p(reg+1, mda_index_port); outb_p(val & 0xff, mda_value_port);
+
+	spin_unlock_irqrestore(&mda_lock, flags);
+}
+
+#ifdef TEST_MDA_B
+static int test_mda_b(unsigned char val, unsigned char reg)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&mda_lock, flags);
+
+	outb_p(reg, mda_index_port); 
+	outb  (val, mda_value_port);
+
+	udelay(20); val = (inb_p(mda_value_port) == val);
+
+	spin_unlock_irqrestore(&mda_lock, flags);
+	return val;
+}
+#endif
+
+static inline void mda_set_cursor(unsigned int location) 
+{
+	if (mda_cursor_loc == location)
+		return;
+
+	write_mda_w(location >> 1, 0x0e);
+
+	mda_cursor_loc = location;
+}
+
+static inline void mda_set_cursor_size(int from, int to)
+{
+	if (mda_cursor_size_from==from && mda_cursor_size_to==to)
+		return;
+	
+	if (from > to) {
+		write_mda_b(MDA_CURSOR_OFF, 0x0a);	/* disable cursor */
+	} else {
+		write_mda_b(from, 0x0a);	/* cursor start */
+		write_mda_b(to,   0x0b);	/* cursor end */
+	}
+
+	mda_cursor_size_from = from;
+	mda_cursor_size_to   = to;
+}
+
+
+#ifndef MODULE
+static int __init mdacon_setup(char *str)
+{
+	/* command line format: mdacon=<first>,<last> */
+
+	int ints[3];
+
+	str = get_options(str, ARRAY_SIZE(ints), ints);
+
+	if (ints[0] < 2)
+		return 0;
+
+	if (ints[1] < 1 || ints[1] > MAX_NR_CONSOLES || 
+	    ints[2] < 1 || ints[2] > MAX_NR_CONSOLES)
+		return 0;
+
+	mda_first_vc = ints[1];
+	mda_last_vc  = ints[2];
+	return 1;
+}
+
+__setup("mdacon=", mdacon_setup);
+#endif
+
+static int mda_detect(void)
+{
+	int count=0;
+	u16 *p, p_save;
+	u16 *q, q_save;
+
+	/* do a memory check */
+
+	p = mda_vram_base;
+	q = mda_vram_base + 0x01000 / 2;
+
+	p_save = scr_readw(p);
+	q_save = scr_readw(q);
+
+	scr_writew(0xAA55, p);
+	if (scr_readw(p) == 0xAA55)
+		count++;
+
+	scr_writew(0x55AA, p);
+	if (scr_readw(p) == 0x55AA)
+		count++;
+
+	scr_writew(p_save, p);
+
+	if (count != 2) {
+		return 0;
+	}
+
+	/* check if we have 4K or 8K */
+
+	scr_writew(0xA55A, q);
+	scr_writew(0x0000, p);
+	if (scr_readw(q) == 0xA55A)
+		count++;
+	
+	scr_writew(0x5AA5, q);
+	scr_writew(0x0000, p);
+	if (scr_readw(q) == 0x5AA5)
+		count++;
+
+	scr_writew(p_save, p);
+	scr_writew(q_save, q);
+	
+	if (count == 4) {
+		mda_vram_len = 0x02000;
+	}
+	
+	/* Ok, there is definitely a card registering at the correct
+	 * memory location, so now we do an I/O port test.
+	 */
+
+#ifdef TEST_MDA_B
+	/* Edward: These two mess `tests' mess up my cursor on bootup */
+
+	/* cursor low register */
+	if (!test_mda_b(0x66, 0x0f))
+		return 0;
+
+	/* cursor low register */
+	if (!test_mda_b(0x99, 0x0f))
+		return 0;
+#endif
+
+	/* See if the card is a Hercules, by checking whether the vsync
+	 * bit of the status register is changing.  This test lasts for
+	 * approximately 1/10th of a second.
+	 */
+	
+	p_save = q_save = inb_p(mda_status_port) & MDA_STATUS_VSYNC;
+
+	for (count = 0; count < 50000 && p_save == q_save; count++) {
+		q_save = inb(mda_status_port) & MDA_STATUS_VSYNC;
+		udelay(2);
+	}
+
+	if (p_save != q_save) {
+		switch (inb_p(mda_status_port) & 0x70) {
+		case 0x10:
+			mda_type = TYPE_HERCPLUS;
+			mda_type_name = "HerculesPlus";
+			break;
+		case 0x50:
+			mda_type = TYPE_HERCCOLOR;
+			mda_type_name = "HerculesColor";
+			break;
+		default:
+			mda_type = TYPE_HERC;
+			mda_type_name = "Hercules";
+			break;
+		}
+	}
+
+	return 1;
+}
+
+static void mda_initialize(void)
+{
+	write_mda_b(97, 0x00);		/* horizontal total */
+	write_mda_b(80, 0x01);		/* horizontal displayed */
+	write_mda_b(82, 0x02);		/* horizontal sync pos */
+	write_mda_b(15, 0x03);		/* horizontal sync width */
+
+	write_mda_b(25, 0x04);		/* vertical total */
+	write_mda_b(6,  0x05);		/* vertical total adjust */
+	write_mda_b(25, 0x06);		/* vertical displayed */
+	write_mda_b(25, 0x07);		/* vertical sync pos */
+
+	write_mda_b(2,  0x08);		/* interlace mode */
+	write_mda_b(13, 0x09);		/* maximum scanline */
+	write_mda_b(12, 0x0a);		/* cursor start */
+	write_mda_b(13, 0x0b);		/* cursor end */
+
+	write_mda_w(0x0000, 0x0c);	/* start address */
+	write_mda_w(0x0000, 0x0e);	/* cursor location */
+
+	outb_p(MDA_MODE_VIDEO_EN | MDA_MODE_BLINK_EN, mda_mode_port);
+	outb_p(0x00, mda_status_port);
+	outb_p(0x00, mda_gfx_port);
+}
+
+static const char *mdacon_startup(void)
+{
+	mda_num_columns = 80;
+	mda_num_lines   = 25;
+
+	mda_vram_len  = 0x01000;
+	mda_vram_base = (u16 *)VGA_MAP_MEM(0xb0000, mda_vram_len);
+
+	mda_index_port  = 0x3b4;
+	mda_value_port  = 0x3b5;
+	mda_mode_port   = 0x3b8;
+	mda_status_port = 0x3ba;
+	mda_gfx_port    = 0x3bf;
+
+	mda_type = TYPE_MDA;
+	mda_type_name = "MDA";
+
+	if (! mda_detect()) {
+		printk("mdacon: MDA card not detected.\n");
+		return NULL;
+	}
+
+	if (mda_type != TYPE_MDA) {
+		mda_initialize();
+	}
+
+	/* cursor looks ugly during boot-up, so turn it off */
+	mda_set_cursor(mda_vram_len - 1);
+
+	printk("mdacon: %s with %ldK of memory detected.\n",
+		mda_type_name, mda_vram_len/1024);
+
+	return "MDA-2";
+}
+
+static void mdacon_init(struct vc_data *c, int init)
+{
+	c->vc_complement_mask = 0x0800;	 /* reverse video */
+	c->vc_display_fg = &mda_display_fg;
+
+	if (init) {
+		c->vc_cols = mda_num_columns;
+		c->vc_rows = mda_num_lines;
+	} else
+		vc_resize(c, mda_num_columns, mda_num_lines);
+
+	/* make the first MDA console visible */
+
+	if (mda_display_fg == NULL)
+		mda_display_fg = c;
+}
+
+static void mdacon_deinit(struct vc_data *c)
+{
+	/* con_set_default_unimap(c->vc_num); */
+
+	if (mda_display_fg == c)
+		mda_display_fg = NULL;
+}
+
+static inline u16 mda_convert_attr(u16 ch)
+{
+	u16 attr = 0x0700;
+
+	/* Underline and reverse-video are mutually exclusive on MDA.
+	 * Since reverse-video is used for cursors and selected areas,
+	 * it takes precedence. 
+	 */
+
+	if (ch & 0x0800)	attr = 0x7000;	/* reverse */
+	else if (ch & 0x0400)	attr = 0x0100;	/* underline */
+
+	return ((ch & 0x0200) << 2) | 		/* intensity */ 
+		(ch & 0x8000) |			/* blink */ 
+		(ch & 0x00ff) | attr;
+}
+
+static u8 mdacon_build_attr(struct vc_data *c, u8 color,
+			    enum vc_intensity intensity,
+			    bool blink, bool underline, bool reverse,
+			    bool italic)
+{
+	/* The attribute is just a bit vector:
+	 *
+	 *	Bit 0..1 : intensity (0..2)
+	 *	Bit 2    : underline
+	 *	Bit 3    : reverse
+	 *	Bit 7    : blink
+	 */
+
+	return (intensity & VCI_MASK) |
+		(underline << 2) |
+		(reverse << 3) |
+		(italic << 4) |
+		(blink << 7);
+}
+
+static void mdacon_invert_region(struct vc_data *c, u16 *p, int count)
+{
+	for (; count > 0; count--) {
+		scr_writew(scr_readw(p) ^ 0x0800, p);
+		p++;
+	}
+}
+
+static inline u16 *mda_addr(unsigned int x, unsigned int y)
+{
+	return mda_vram_base + y * mda_num_columns + x;
+}
+
+static void mdacon_putc(struct vc_data *c, int ch, int y, int x)
+{
+	scr_writew(mda_convert_attr(ch), mda_addr(x, y));
+}
+
+static void mdacon_putcs(struct vc_data *c, const unsigned short *s,
+		         int count, int y, int x)
+{
+	u16 *dest = mda_addr(x, y);
+
+	for (; count > 0; count--) {
+		scr_writew(mda_convert_attr(scr_readw(s++)), dest++);
+	}
+}
+
+static void mdacon_clear(struct vc_data *c, int y, int x, 
+			  int height, int width)
+{
+	u16 *dest = mda_addr(x, y);
+	u16 eattr = mda_convert_attr(c->vc_video_erase_char);
+
+	if (width <= 0 || height <= 0)
+		return;
+
+	if (x==0 && width==mda_num_columns) {
+		scr_memsetw(dest, eattr, height*width*2);
+	} else {
+		for (; height > 0; height--, dest+=mda_num_columns)
+			scr_memsetw(dest, eattr, width*2);
+	}
+}
+                        
+static int mdacon_switch(struct vc_data *c)
+{
+	return 1;	/* redrawing needed */
+}
+
+static int mdacon_blank(struct vc_data *c, int blank, int mode_switch)
+{
+	if (mda_type == TYPE_MDA) {
+		if (blank) 
+			scr_memsetw(mda_vram_base,
+				mda_convert_attr(c->vc_video_erase_char),
+				c->vc_screenbuf_size);
+		/* Tell console.c that it has to restore the screen itself */
+		return 1;
+	} else {
+		if (blank)
+			outb_p(0x00, mda_mode_port);	/* disable video */
+		else
+			outb_p(MDA_MODE_VIDEO_EN | MDA_MODE_BLINK_EN, 
+				mda_mode_port);
+		return 0;
+	}
+}
+
+static void mdacon_cursor(struct vc_data *c, int mode)
+{
+	if (mode == CM_ERASE) {
+		mda_set_cursor(mda_vram_len - 1);
+		return;
+	}
+
+	mda_set_cursor(c->state.y * mda_num_columns * 2 + c->state.x * 2);
+
+	switch (CUR_SIZE(c->vc_cursor_type)) {
+
+		case CUR_LOWER_THIRD:	mda_set_cursor_size(10, 13); break;
+		case CUR_LOWER_HALF:	mda_set_cursor_size(7,  13); break;
+		case CUR_TWO_THIRDS:	mda_set_cursor_size(4,  13); break;
+		case CUR_BLOCK:		mda_set_cursor_size(1,  13); break;
+		case CUR_NONE:		mda_set_cursor_size(14, 13); break;
+		default:		mda_set_cursor_size(12, 13); break;
+	}
+}
+
+static bool mdacon_scroll(struct vc_data *c, unsigned int t, unsigned int b,
+		enum con_scroll dir, unsigned int lines)
+{
+	u16 eattr = mda_convert_attr(c->vc_video_erase_char);
+
+	if (!lines)
+		return false;
+
+	if (lines > c->vc_rows)   /* maximum realistic size */
+		lines = c->vc_rows;
+
+	switch (dir) {
+
+	case SM_UP:
+		scr_memmovew(mda_addr(0, t), mda_addr(0, t + lines),
+				(b-t-lines)*mda_num_columns*2);
+		scr_memsetw(mda_addr(0, b - lines), eattr,
+				lines*mda_num_columns*2);
+		break;
+
+	case SM_DOWN:
+		scr_memmovew(mda_addr(0, t + lines), mda_addr(0, t),
+				(b-t-lines)*mda_num_columns*2);
+		scr_memsetw(mda_addr(0, t), eattr, lines*mda_num_columns*2);
+		break;
+	}
+
+	return false;
+}
+
+
+/*
+ *  The console `switch' structure for the MDA based console
+ */
+
+static const struct consw mda_con = {
+	.owner =		THIS_MODULE,
+	.con_startup =		mdacon_startup,
+	.con_init =		mdacon_init,
+	.con_deinit =		mdacon_deinit,
+	.con_clear =		mdacon_clear,
+	.con_putc =		mdacon_putc,
+	.con_putcs =		mdacon_putcs,
+	.con_cursor =		mdacon_cursor,
+	.con_scroll =		mdacon_scroll,
+	.con_switch =		mdacon_switch,
+	.con_blank =		mdacon_blank,
+	.con_build_attr =	mdacon_build_attr,
+	.con_invert_region =	mdacon_invert_region,
+};
+
+int __init mda_console_init(void)
+{
+	int err;
+
+	if (mda_first_vc > mda_last_vc)
+		return 1;
+	console_lock();
+	err = do_take_over_console(&mda_con, mda_first_vc-1, mda_last_vc-1, 0);
+	console_unlock();
+	return err;
+}
+
+static void __exit mda_console_exit(void)
+{
+	give_up_console(&mda_con);
+}
+
+module_init(mda_console_init);
+module_exit(mda_console_exit);
+
+MODULE_LICENSE("GPL");
+
diff --git a/drivers/video/console/newport_con.c b/drivers/video/console/newport_con.c
new file mode 100644
index 000000000..e8e4f82cd
--- /dev/null
+++ b/drivers/video/console/newport_con.c
@@ -0,0 +1,746 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * newport_con.c: Abscon for newport hardware
+ * 
+ * (C) 1998 Thomas Bogendoerfer (tsbogend@alpha.franken.de)
+ * (C) 1999 Ulf Carlsson (ulfc@thepuffingruop.com)
+ * 
+ * This driver is based on sgicons.c and cons_newport.
+ * 
+ * Copyright (C) 1996 David S. Miller (davem@davemloft.net)
+ * Copyright (C) 1997 Miguel de Icaza (miguel@nuclecu.unam.mx)
+ */
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/kd.h>
+#include <linux/selection.h>
+#include <linux/console.h>
+#include <linux/vt_kern.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+
+#include <asm/io.h>
+#include <linux/uaccess.h>
+#include <asm/page.h>
+#include <asm/gio_device.h>
+
+#include <video/newport.h>
+
+#include <linux/linux_logo.h>
+#include <linux/font.h>
+
+#define NEWPORT_LEN	0x10000
+
+#define FONT_DATA ((unsigned char *)font_vga_8x16.data)
+
+static unsigned char *font_data[MAX_NR_CONSOLES];
+
+static struct newport_regs *npregs;
+static unsigned long newport_addr;
+
+static int logo_active;
+static int topscan;
+static int xcurs_correction = 29;
+static int newport_xsize;
+static int newport_ysize;
+static int newport_has_init;
+
+static int newport_set_def_font(int unit, struct console_font *op);
+
+#define BMASK(c) (c << 24)
+
+#define RENDER(regs, cp) do { \
+(regs)->go.zpattern = BMASK((cp)[0x0]); (regs)->go.zpattern = BMASK((cp)[0x1]); \
+(regs)->go.zpattern = BMASK((cp)[0x2]); (regs)->go.zpattern = BMASK((cp)[0x3]); \
+(regs)->go.zpattern = BMASK((cp)[0x4]); (regs)->go.zpattern = BMASK((cp)[0x5]); \
+(regs)->go.zpattern = BMASK((cp)[0x6]); (regs)->go.zpattern = BMASK((cp)[0x7]); \
+(regs)->go.zpattern = BMASK((cp)[0x8]); (regs)->go.zpattern = BMASK((cp)[0x9]); \
+(regs)->go.zpattern = BMASK((cp)[0xa]); (regs)->go.zpattern = BMASK((cp)[0xb]); \
+(regs)->go.zpattern = BMASK((cp)[0xc]); (regs)->go.zpattern = BMASK((cp)[0xd]); \
+(regs)->go.zpattern = BMASK((cp)[0xe]); (regs)->go.zpattern = BMASK((cp)[0xf]); \
+} while(0)
+
+#define TESTVAL 0xdeadbeef
+#define XSTI_TO_FXSTART(val) (((val) & 0xffff) << 11)
+
+static inline void newport_render_background(int xstart, int ystart,
+					     int xend, int yend, int ci)
+{
+	newport_wait(npregs);
+	npregs->set.wrmask = 0xffffffff;
+	npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK |
+				 NPORT_DMODE0_DOSETUP | NPORT_DMODE0_STOPX
+				 | NPORT_DMODE0_STOPY);
+	npregs->set.colori = ci;
+	npregs->set.xystarti =
+	    (xstart << 16) | ((ystart + topscan) & 0x3ff);
+	npregs->go.xyendi =
+	    ((xend + 7) << 16) | ((yend + topscan + 15) & 0x3ff);
+}
+
+static inline void newport_init_cmap(void)
+{
+	unsigned short i;
+
+	for (i = 0; i < 16; i++) {
+		newport_bfwait(npregs);
+		newport_cmap_setaddr(npregs, color_table[i]);
+		newport_cmap_setrgb(npregs,
+				    default_red[i],
+				    default_grn[i], default_blu[i]);
+	}
+}
+
+static const struct linux_logo *newport_show_logo(void)
+{
+#ifdef CONFIG_LOGO_SGI_CLUT224
+	const struct linux_logo *logo = fb_find_logo(8);
+	const unsigned char *clut;
+	const unsigned char *data;
+	unsigned long i;
+
+	if (!logo)
+		return NULL;
+	clut = logo->clut;
+	data = logo->data;
+
+	for (i = 0; i < logo->clutsize; i++) {
+		newport_bfwait(npregs);
+		newport_cmap_setaddr(npregs, i + 0x20);
+		newport_cmap_setrgb(npregs, clut[0], clut[1], clut[2]);
+		clut += 3;
+	}
+
+	newport_wait(npregs);
+	npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK |
+				 NPORT_DMODE0_CHOST);
+
+	npregs->set.xystarti = ((newport_xsize - logo->width) << 16) | (0);
+	npregs->set.xyendi = ((newport_xsize - 1) << 16);
+	newport_wait(npregs);
+
+	for (i = 0; i < logo->width*logo->height; i++)
+		npregs->go.hostrw0 = *data++ << 24;
+
+	return logo;
+#else
+	return NULL;
+#endif /* CONFIG_LOGO_SGI_CLUT224 */
+}
+
+static inline void newport_clear_screen(int xstart, int ystart, int xend,
+					int yend, int ci)
+{
+	if (logo_active)
+		return;
+
+	newport_wait(npregs);
+	npregs->set.wrmask = 0xffffffff;
+	npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK |
+				 NPORT_DMODE0_DOSETUP | NPORT_DMODE0_STOPX
+				 | NPORT_DMODE0_STOPY);
+	npregs->set.colori = ci;
+	npregs->set.xystarti = (xstart << 16) | ystart;
+	npregs->go.xyendi = (xend << 16) | yend;
+}
+
+static inline void newport_clear_lines(int ystart, int yend, int ci)
+{
+	ystart = ((ystart << 4) + topscan) & 0x3ff;
+	yend = ((yend << 4) + topscan + 15) & 0x3ff;
+	newport_clear_screen(0, ystart, 1280 + 63, yend, ci);
+}
+
+static void newport_reset(void)
+{
+	unsigned short treg;
+	int i;
+
+	newport_wait(npregs);
+	treg = newport_vc2_get(npregs, VC2_IREG_CONTROL);
+	newport_vc2_set(npregs, VC2_IREG_CONTROL,
+			(treg | VC2_CTRL_EVIDEO));
+
+	treg = newport_vc2_get(npregs, VC2_IREG_CENTRY);
+	newport_vc2_set(npregs, VC2_IREG_RADDR, treg);
+	npregs->set.dcbmode = (NPORT_DMODE_AVC2 | VC2_REGADDR_RAM |
+			       NPORT_DMODE_W2 | VC2_PROTOCOL);
+	for (i = 0; i < 128; i++) {
+		newport_bfwait(npregs);
+		if (i == 92 || i == 94)
+			npregs->set.dcbdata0.byshort.s1 = 0xff00;
+		else
+			npregs->set.dcbdata0.byshort.s1 = 0x0000;
+	}
+
+	newport_init_cmap();
+
+	/* turn off popup plane */
+	npregs->set.dcbmode = (DCB_XMAP0 | R_DCB_XMAP9_PROTOCOL |
+			       XM9_CRS_CONFIG | NPORT_DMODE_W1);
+	npregs->set.dcbdata0.bybytes.b3 &= ~XM9_PUPMODE;
+	npregs->set.dcbmode = (DCB_XMAP1 | R_DCB_XMAP9_PROTOCOL |
+			       XM9_CRS_CONFIG | NPORT_DMODE_W1);
+	npregs->set.dcbdata0.bybytes.b3 &= ~XM9_PUPMODE;
+
+	topscan = 0;
+	npregs->cset.topscan = 0x3ff;
+	npregs->cset.xywin = (4096 << 16) | 4096;
+
+	/* Clear the screen. */
+	newport_clear_screen(0, 0, 1280 + 63, 1024, 0);
+}
+
+/*
+ * calculate the actual screen size by reading
+ * the video timing out of the VC2
+ */
+static void newport_get_screensize(void)
+{
+	int i, cols;
+	unsigned short ventry, treg;
+	unsigned short linetable[128];	/* should be enough */
+
+	ventry = newport_vc2_get(npregs, VC2_IREG_VENTRY);
+	newport_vc2_set(npregs, VC2_IREG_RADDR, ventry);
+	npregs->set.dcbmode = (NPORT_DMODE_AVC2 | VC2_REGADDR_RAM |
+			       NPORT_DMODE_W2 | VC2_PROTOCOL);
+	for (i = 0; i < 128; i++) {
+		newport_bfwait(npregs);
+		linetable[i] = npregs->set.dcbdata0.byshort.s1;
+	}
+
+	newport_xsize = newport_ysize = 0;
+	for (i = 0; i < ARRAY_SIZE(linetable) - 1 && linetable[i + 1]; i += 2) {
+		cols = 0;
+		newport_vc2_set(npregs, VC2_IREG_RADDR, linetable[i]);
+		npregs->set.dcbmode = (NPORT_DMODE_AVC2 | VC2_REGADDR_RAM |
+				       NPORT_DMODE_W2 | VC2_PROTOCOL);
+		do {
+			newport_bfwait(npregs);
+			treg = npregs->set.dcbdata0.byshort.s1;
+			if ((treg & 1) == 0)
+				cols += (treg >> 7) & 0xfe;
+			if ((treg & 0x80) == 0) {
+				newport_bfwait(npregs);
+				treg = npregs->set.dcbdata0.byshort.s1;
+			}
+		} while ((treg & 0x8000) == 0);
+		if (cols) {
+			if (cols > newport_xsize)
+				newport_xsize = cols;
+			newport_ysize += linetable[i + 1];
+		}
+	}
+	printk("NG1: Screensize %dx%d\n", newport_xsize, newport_ysize);
+}
+
+static void newport_get_revisions(void)
+{
+	unsigned int tmp;
+	unsigned int board_rev;
+	unsigned int rex3_rev;
+	unsigned int vc2_rev;
+	unsigned int cmap_rev;
+	unsigned int xmap9_rev;
+	unsigned int bt445_rev;
+	unsigned int bitplanes;
+
+	rex3_rev = npregs->cset.status & NPORT_STAT_VERS;
+
+	npregs->set.dcbmode = (DCB_CMAP0 | NCMAP_PROTOCOL |
+			       NCMAP_REGADDR_RREG | NPORT_DMODE_W1);
+	tmp = npregs->set.dcbdata0.bybytes.b3;
+	cmap_rev = tmp & 7;
+	board_rev = (tmp >> 4) & 7;
+	bitplanes = ((board_rev > 1) && (tmp & 0x80)) ? 8 : 24;
+
+	npregs->set.dcbmode = (DCB_CMAP1 | NCMAP_PROTOCOL |
+			       NCMAP_REGADDR_RREG | NPORT_DMODE_W1);
+	tmp = npregs->set.dcbdata0.bybytes.b3;
+	if ((tmp & 7) < cmap_rev)
+		cmap_rev = (tmp & 7);
+
+	vc2_rev = (newport_vc2_get(npregs, VC2_IREG_CONFIG) >> 5) & 7;
+
+	npregs->set.dcbmode = (DCB_XMAP0 | R_DCB_XMAP9_PROTOCOL |
+			       XM9_CRS_REVISION | NPORT_DMODE_W1);
+	xmap9_rev = npregs->set.dcbdata0.bybytes.b3 & 7;
+
+	npregs->set.dcbmode = (DCB_BT445 | BT445_PROTOCOL |
+			       BT445_CSR_ADDR_REG | NPORT_DMODE_W1);
+	npregs->set.dcbdata0.bybytes.b3 = BT445_REVISION_REG;
+	npregs->set.dcbmode = (DCB_BT445 | BT445_PROTOCOL |
+			       BT445_CSR_REVISION | NPORT_DMODE_W1);
+	bt445_rev = (npregs->set.dcbdata0.bybytes.b3 >> 4) - 0x0a;
+
+#define L(a)     (char)('A'+(a))
+	printk
+	    ("NG1: Revision %d, %d bitplanes, REX3 revision %c, VC2 revision %c, xmap9 revision %c, cmap revision %c, bt445 revision %c\n",
+	     board_rev, bitplanes, L(rex3_rev), L(vc2_rev), L(xmap9_rev),
+	     L(cmap_rev ? (cmap_rev + 1) : 0), L(bt445_rev));
+#undef L
+
+	if (board_rev == 3)	/* I don't know all affected revisions */
+		xcurs_correction = 21;
+}
+
+static void newport_exit(void)
+{
+	int i;
+
+	/* free memory used by user font */
+	for (i = 0; i < MAX_NR_CONSOLES; i++)
+		newport_set_def_font(i, NULL);
+}
+
+/* Can't be __init, do_take_over_console may call it later */
+static const char *newport_startup(void)
+{
+	int i;
+
+	npregs->cset.config = NPORT_CFG_GD0;
+
+	if (newport_wait(npregs))
+		goto out_unmap;
+
+	npregs->set.xstarti = TESTVAL;
+	if (npregs->set._xstart.word != XSTI_TO_FXSTART(TESTVAL))
+		goto out_unmap;
+
+	for (i = 0; i < MAX_NR_CONSOLES; i++)
+		font_data[i] = FONT_DATA;
+
+	newport_reset();
+	newport_get_revisions();
+	newport_get_screensize();
+	newport_has_init = 1;
+
+	return "SGI Newport";
+
+out_unmap:
+	return NULL;
+}
+
+static void newport_init(struct vc_data *vc, int init)
+{
+	int cols, rows;
+
+	cols = newport_xsize / 8;
+	rows = newport_ysize / 16;
+	vc->vc_can_do_color = 1;
+	if (init) {
+		vc->vc_cols = cols;
+		vc->vc_rows = rows;
+	} else
+		vc_resize(vc, cols, rows);
+}
+
+static void newport_deinit(struct vc_data *c)
+{
+	if (!con_is_bound(&newport_con) && newport_has_init) {
+		newport_exit();
+		newport_has_init = 0;
+	}
+}
+
+static void newport_clear(struct vc_data *vc, int sy, int sx, int height,
+			  int width)
+{
+	int xend = ((sx + width) << 3) - 1;
+	int ystart = ((sy << 4) + topscan) & 0x3ff;
+	int yend = (((sy + height) << 4) + topscan - 1) & 0x3ff;
+
+	if (logo_active)
+		return;
+
+	if (ystart < yend) {
+		newport_clear_screen(sx << 3, ystart, xend, yend,
+				     (vc->state.color & 0xf0) >> 4);
+	} else {
+		newport_clear_screen(sx << 3, ystart, xend, 1023,
+				     (vc->state.color & 0xf0) >> 4);
+		newport_clear_screen(sx << 3, 0, xend, yend,
+				     (vc->state.color & 0xf0) >> 4);
+	}
+}
+
+static void newport_putc(struct vc_data *vc, int charattr, int ypos,
+			 int xpos)
+{
+	unsigned char *p;
+
+	p = &font_data[vc->vc_num][(charattr & 0xff) << 4];
+	charattr = (charattr >> 8) & 0xff;
+	xpos <<= 3;
+	ypos <<= 4;
+
+	newport_render_background(xpos, ypos, xpos, ypos,
+				  (charattr & 0xf0) >> 4);
+
+	/* Set the color and drawing mode. */
+	newport_wait(npregs);
+	npregs->set.colori = charattr & 0xf;
+	npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK |
+				 NPORT_DMODE0_STOPX | NPORT_DMODE0_ZPENAB |
+				 NPORT_DMODE0_L32);
+
+	/* Set coordinates for bitmap operation. */
+	npregs->set.xystarti = (xpos << 16) | ((ypos + topscan) & 0x3ff);
+	npregs->set.xyendi = ((xpos + 7) << 16);
+	newport_wait(npregs);
+
+	/* Go, baby, go... */
+	RENDER(npregs, p);
+}
+
+static void newport_putcs(struct vc_data *vc, const unsigned short *s,
+			  int count, int ypos, int xpos)
+{
+	int i;
+	int charattr;
+	unsigned char *p;
+
+	charattr = (scr_readw(s) >> 8) & 0xff;
+
+	xpos <<= 3;
+	ypos <<= 4;
+
+	if (!logo_active)
+		/* Clear the area behing the string */
+		newport_render_background(xpos, ypos,
+					  xpos + ((count - 1) << 3), ypos,
+					  (charattr & 0xf0) >> 4);
+
+	newport_wait(npregs);
+
+	/* Set the color and drawing mode. */
+	npregs->set.colori = charattr & 0xf;
+	npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK |
+				 NPORT_DMODE0_STOPX | NPORT_DMODE0_ZPENAB |
+				 NPORT_DMODE0_L32);
+
+	for (i = 0; i < count; i++, xpos += 8) {
+		p = &font_data[vc->vc_num][(scr_readw(s++) & 0xff) << 4];
+
+		newport_wait(npregs);
+
+		/* Set coordinates for bitmap operation. */
+		npregs->set.xystarti =
+		    (xpos << 16) | ((ypos + topscan) & 0x3ff);
+		npregs->set.xyendi = ((xpos + 7) << 16);
+
+		/* Go, baby, go... */
+		RENDER(npregs, p);
+	}
+}
+
+static void newport_cursor(struct vc_data *vc, int mode)
+{
+	unsigned short treg;
+	int xcurs, ycurs;
+
+	switch (mode) {
+	case CM_ERASE:
+		treg = newport_vc2_get(npregs, VC2_IREG_CONTROL);
+		newport_vc2_set(npregs, VC2_IREG_CONTROL,
+				(treg & ~(VC2_CTRL_ECDISP)));
+		break;
+
+	case CM_MOVE:
+	case CM_DRAW:
+		treg = newport_vc2_get(npregs, VC2_IREG_CONTROL);
+		newport_vc2_set(npregs, VC2_IREG_CONTROL,
+				(treg | VC2_CTRL_ECDISP));
+		xcurs = (vc->vc_pos - vc->vc_visible_origin) / 2;
+		ycurs = ((xcurs / vc->vc_cols) << 4) + 31;
+		xcurs = ((xcurs % vc->vc_cols) << 3) + xcurs_correction;
+		newport_vc2_set(npregs, VC2_IREG_CURSX, xcurs);
+		newport_vc2_set(npregs, VC2_IREG_CURSY, ycurs);
+	}
+}
+
+static int newport_switch(struct vc_data *vc)
+{
+	static int logo_drawn = 0;
+
+	topscan = 0;
+	npregs->cset.topscan = 0x3ff;
+
+	if (!logo_drawn) {
+		if (newport_show_logo()) {
+			logo_drawn = 1;
+			logo_active = 1;
+		}
+	}
+
+	return 1;
+}
+
+static int newport_blank(struct vc_data *c, int blank, int mode_switch)
+{
+	unsigned short treg;
+
+	if (blank == 0) {
+		/* unblank console */
+		treg = newport_vc2_get(npregs, VC2_IREG_CONTROL);
+		newport_vc2_set(npregs, VC2_IREG_CONTROL,
+				(treg | VC2_CTRL_EDISP));
+	} else {
+		/* blank console */
+		treg = newport_vc2_get(npregs, VC2_IREG_CONTROL);
+		newport_vc2_set(npregs, VC2_IREG_CONTROL,
+				(treg & ~(VC2_CTRL_EDISP)));
+	}
+	return 1;
+}
+
+static int newport_set_font(int unit, struct console_font *op, unsigned int vpitch)
+{
+	int w = op->width;
+	int h = op->height;
+	int size = h * op->charcount;
+	int i;
+	unsigned char *new_data, *data = op->data, *p;
+
+	/* ladis: when I grow up, there will be a day... and more sizes will
+	 * be supported ;-) */
+	if ((w != 8) || (h != 16) || (vpitch != 32)
+	    || (op->charcount != 256 && op->charcount != 512))
+		return -EINVAL;
+
+	if (!(new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size,
+	     GFP_USER))) return -ENOMEM;
+
+	new_data += FONT_EXTRA_WORDS * sizeof(int);
+	FNTSIZE(new_data) = size;
+	FNTCHARCNT(new_data) = op->charcount;
+	REFCOUNT(new_data) = 0;	/* usage counter */
+	FNTSUM(new_data) = 0;
+
+	p = new_data;
+	for (i = 0; i < op->charcount; i++) {
+		memcpy(p, data, h);
+		data += 32;
+		p += h;
+	}
+
+	/* check if font is already used by other console */
+	for (i = 0; i < MAX_NR_CONSOLES; i++) {
+		if (font_data[i] != FONT_DATA
+		    && FNTSIZE(font_data[i]) == size
+		    && !memcmp(font_data[i], new_data, size)) {
+			kfree(new_data - FONT_EXTRA_WORDS * sizeof(int));
+			/* current font is the same as the new one */
+			if (i == unit)
+				return 0;
+			new_data = font_data[i];
+			break;
+		}
+	}
+	/* old font is user font */
+	if (font_data[unit] != FONT_DATA) {
+		if (--REFCOUNT(font_data[unit]) == 0)
+			kfree(font_data[unit] -
+			      FONT_EXTRA_WORDS * sizeof(int));
+	}
+	REFCOUNT(new_data)++;
+	font_data[unit] = new_data;
+
+	return 0;
+}
+
+static int newport_set_def_font(int unit, struct console_font *op)
+{
+	if (font_data[unit] != FONT_DATA) {
+		if (--REFCOUNT(font_data[unit]) == 0)
+			kfree(font_data[unit] -
+			      FONT_EXTRA_WORDS * sizeof(int));
+		font_data[unit] = FONT_DATA;
+	}
+
+	return 0;
+}
+
+static int newport_font_default(struct vc_data *vc, struct console_font *op, char *name)
+{
+	return newport_set_def_font(vc->vc_num, op);
+}
+
+static int newport_font_set(struct vc_data *vc, struct console_font *font,
+			    unsigned int vpitch, unsigned int flags)
+{
+	return newport_set_font(vc->vc_num, font, vpitch);
+}
+
+static bool newport_scroll(struct vc_data *vc, unsigned int t, unsigned int b,
+		enum con_scroll dir, unsigned int lines)
+{
+	int count, x, y;
+	unsigned short *s, *d;
+	unsigned short chattr;
+
+	logo_active = 0;	/* it's time to disable the logo now.. */
+
+	if (t == 0 && b == vc->vc_rows) {
+		if (dir == SM_UP) {
+			topscan = (topscan + (lines << 4)) & 0x3ff;
+			newport_clear_lines(vc->vc_rows - lines,
+					    vc->vc_rows - 1,
+					    (vc->state.color & 0xf0) >> 4);
+		} else {
+			topscan = (topscan + (-lines << 4)) & 0x3ff;
+			newport_clear_lines(0, lines - 1,
+					    (vc->state.color & 0xf0) >> 4);
+		}
+		npregs->cset.topscan = (topscan - 1) & 0x3ff;
+		return false;
+	}
+
+	count = (b - t - lines) * vc->vc_cols;
+	if (dir == SM_UP) {
+		x = 0;
+		y = t;
+		s = (unsigned short *) (vc->vc_origin +
+					vc->vc_size_row * (t + lines));
+		d = (unsigned short *) (vc->vc_origin +
+					vc->vc_size_row * t);
+		while (count--) {
+			chattr = scr_readw(s++);
+			if (chattr != scr_readw(d)) {
+				newport_putc(vc, chattr, y, x);
+				scr_writew(chattr, d);
+			}
+			d++;
+			if (++x == vc->vc_cols) {
+				x = 0;
+				y++;
+			}
+		}
+		d = (unsigned short *) (vc->vc_origin +
+					vc->vc_size_row * (b - lines));
+		x = 0;
+		y = b - lines;
+		for (count = 0; count < (lines * vc->vc_cols); count++) {
+			if (scr_readw(d) != vc->vc_video_erase_char) {
+				newport_putc(vc, vc->vc_video_erase_char,
+					     y, x);
+				scr_writew(vc->vc_video_erase_char, d);
+			}
+			d++;
+			if (++x == vc->vc_cols) {
+				x = 0;
+				y++;
+			}
+		}
+	} else {
+		x = vc->vc_cols - 1;
+		y = b - 1;
+		s = (unsigned short *) (vc->vc_origin +
+					vc->vc_size_row * (b - lines) - 2);
+		d = (unsigned short *) (vc->vc_origin +
+					vc->vc_size_row * b - 2);
+		while (count--) {
+			chattr = scr_readw(s--);
+			if (chattr != scr_readw(d)) {
+				newport_putc(vc, chattr, y, x);
+				scr_writew(chattr, d);
+			}
+			d--;
+			if (x-- == 0) {
+				x = vc->vc_cols - 1;
+				y--;
+			}
+		}
+		d = (unsigned short *) (vc->vc_origin +
+					vc->vc_size_row * t);
+		x = 0;
+		y = t;
+		for (count = 0; count < (lines * vc->vc_cols); count++) {
+			if (scr_readw(d) != vc->vc_video_erase_char) {
+				newport_putc(vc, vc->vc_video_erase_char,
+					     y, x);
+				scr_writew(vc->vc_video_erase_char, d);
+			}
+			d++;
+			if (++x == vc->vc_cols) {
+				x = 0;
+				y++;
+			}
+		}
+	}
+	return true;
+}
+
+static void newport_save_screen(struct vc_data *vc) { }
+
+const struct consw newport_con = {
+	.owner		  = THIS_MODULE,
+	.con_startup	  = newport_startup,
+	.con_init	  = newport_init,
+	.con_deinit	  = newport_deinit,
+	.con_clear	  = newport_clear,
+	.con_putc	  = newport_putc,
+	.con_putcs	  = newport_putcs,
+	.con_cursor	  = newport_cursor,
+	.con_scroll	  = newport_scroll,
+	.con_switch	  = newport_switch,
+	.con_blank	  = newport_blank,
+	.con_font_set	  = newport_font_set,
+	.con_font_default = newport_font_default,
+	.con_save_screen  = newport_save_screen
+};
+
+static int newport_probe(struct gio_device *dev,
+			 const struct gio_device_id *id)
+{
+	int err;
+
+	if (!dev->resource.start)
+		return -EINVAL;
+
+	if (npregs)
+		return -EBUSY; /* we only support one Newport as console */
+
+	newport_addr = dev->resource.start + 0xF0000;
+	if (!request_mem_region(newport_addr, NEWPORT_LEN, "Newport"))
+		return -ENODEV;
+
+	npregs = (struct newport_regs *)/* ioremap cannot fail */
+		ioremap(newport_addr, sizeof(struct newport_regs));
+	console_lock();
+	err = do_take_over_console(&newport_con, 0, MAX_NR_CONSOLES - 1, 1);
+	console_unlock();
+
+	if (err) {
+		iounmap((void *)npregs);
+		release_mem_region(newport_addr, NEWPORT_LEN);
+	}
+	return err;
+}
+
+static void newport_remove(struct gio_device *dev)
+{
+	give_up_console(&newport_con);
+	iounmap((void *)npregs);
+	release_mem_region(newport_addr, NEWPORT_LEN);
+}
+
+static struct gio_device_id newport_ids[] = {
+	{ .id = 0x7e },
+	{ .id = 0xff }
+};
+
+MODULE_ALIAS("gio:7e");
+
+static struct gio_driver newport_driver = {
+	.name = "newport",
+	.id_table = newport_ids,
+	.probe = newport_probe,
+	.remove = newport_remove,
+};
+module_driver(newport_driver, gio_register_driver, gio_unregister_driver);
+
+MODULE_LICENSE("GPL");
diff --git a/drivers/video/console/sticon.c b/drivers/video/console/sticon.c
new file mode 100644
index 000000000..992a4fa43
--- /dev/null
+++ b/drivers/video/console/sticon.c
@@ -0,0 +1,409 @@
+/*
+ *  linux/drivers/video/console/sticon.c - console driver using HP's STI firmware
+ *
+ *	Copyright (C) 2000 Philipp Rumpf <prumpf@tux.org>
+ *	Copyright (C) 2002-2020 Helge Deller <deller@gmx.de>
+ *
+ *  Based on linux/drivers/video/vgacon.c and linux/drivers/video/fbcon.c,
+ *  which were
+ *
+ *	Created 28 Sep 1997 by Geert Uytterhoeven
+ *	Rewritten by Martin Mares <mj@ucw.cz>, July 1998
+ *	Copyright (C) 1991, 1992  Linus Torvalds
+ *			    1995  Jay Estabrook
+ *	Copyright (C) 1995 Geert Uytterhoeven
+ *	Copyright (C) 1993 Bjoern Brauel
+ *			   Roman Hodek
+ *	Copyright (C) 1993 Hamish Macdonald
+ *			   Greg Harp
+ *	Copyright (C) 1994 David Carter [carter@compsci.bristol.ac.uk]
+ *
+ *	      with work by William Rucklidge (wjr@cs.cornell.edu)
+ *			   Geert Uytterhoeven
+ *			   Jes Sorensen (jds@kom.auc.dk)
+ *			   Martin Apel
+ *	      with work by Guenther Kelleter
+ *			   Martin Schaller
+ *			   Andreas Schwab
+ *			   Emmanuel Marty (core@ggi-project.org)
+ *			   Jakub Jelinek (jj@ultra.linux.cz)
+ *			   Martin Mares <mj@ucw.cz>
+ *
+ *  This file is subject to the terms and conditions of the GNU General Public
+ *  License.  See the file COPYING in the main directory of this archive for
+ *  more details.
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/console.h>
+#include <linux/errno.h>
+#include <linux/vt_kern.h>
+#include <linux/kd.h>
+#include <linux/selection.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/font.h>
+#include <linux/crc32.h>
+#include <linux/fb.h>
+
+#include <asm/io.h>
+
+#include <video/sticore.h>
+
+/* switching to graphics mode */
+#define BLANK 0
+static int vga_is_gfx;
+
+#define STI_DEF_FONT	sticon_sti->font
+
+/* borrowed from fbcon.c */
+#define FNTREFCOUNT(fd)	(fd->refcount)
+#define FNTCRC(fd)	(fd->crc)
+static struct sti_cooked_font *font_data[MAX_NR_CONSOLES];
+
+/* this is the sti_struct used for this console */
+static struct sti_struct *sticon_sti;
+
+static const char *sticon_startup(void)
+{
+    return "STI console";
+}
+
+static void sticon_putc(struct vc_data *conp, int c, int ypos, int xpos)
+{
+    if (vga_is_gfx || console_blanked)
+	    return;
+
+    if (conp->vc_mode != KD_TEXT)
+    	    return;
+
+    sti_putc(sticon_sti, c, ypos, xpos, font_data[conp->vc_num]);
+}
+
+static void sticon_putcs(struct vc_data *conp, const unsigned short *s,
+			 int count, int ypos, int xpos)
+{
+    if (vga_is_gfx || console_blanked)
+	    return;
+
+    if (conp->vc_mode != KD_TEXT)
+    	    return;
+
+    while (count--) {
+	sti_putc(sticon_sti, scr_readw(s++), ypos, xpos++,
+		 font_data[conp->vc_num]);
+    }
+}
+
+static void sticon_cursor(struct vc_data *conp, int mode)
+{
+    unsigned short car1;
+
+    /* no cursor update if screen is blanked */
+    if (vga_is_gfx || console_blanked)
+	return;
+
+    car1 = conp->vc_screenbuf[conp->state.x + conp->state.y * conp->vc_cols];
+    switch (mode) {
+    case CM_ERASE:
+	sti_putc(sticon_sti, car1, conp->state.y, conp->state.x,
+		 font_data[conp->vc_num]);
+	break;
+    case CM_MOVE:
+    case CM_DRAW:
+	switch (CUR_SIZE(conp->vc_cursor_type)) {
+	case CUR_UNDERLINE:
+	case CUR_LOWER_THIRD:
+	case CUR_LOWER_HALF:
+	case CUR_TWO_THIRDS:
+	case CUR_BLOCK:
+	    sti_putc(sticon_sti, (car1 & 255) + (0 << 8) + (7 << 11),
+		     conp->state.y, conp->state.x, font_data[conp->vc_num]);
+	    break;
+	}
+	break;
+    }
+}
+
+static bool sticon_scroll(struct vc_data *conp, unsigned int t,
+		unsigned int b, enum con_scroll dir, unsigned int count)
+{
+    struct sti_struct *sti = sticon_sti;
+
+    if (vga_is_gfx)
+        return false;
+
+    sticon_cursor(conp, CM_ERASE);
+
+    switch (dir) {
+    case SM_UP:
+	sti_bmove(sti, t + count, 0, t, 0, b - t - count, conp->vc_cols,
+		  font_data[conp->vc_num]);
+	sti_clear(sti, b - count, 0, count, conp->vc_cols,
+		  conp->vc_video_erase_char, font_data[conp->vc_num]);
+	break;
+
+    case SM_DOWN:
+	sti_bmove(sti, t, 0, t + count, 0, b - t - count, conp->vc_cols,
+		  font_data[conp->vc_num]);
+	sti_clear(sti, t, 0, count, conp->vc_cols,
+		  conp->vc_video_erase_char, font_data[conp->vc_num]);
+	break;
+    }
+
+    return false;
+}
+
+static void sticon_set_def_font(int unit)
+{
+	if (font_data[unit] != STI_DEF_FONT) {
+		if (--FNTREFCOUNT(font_data[unit]) == 0) {
+			kfree(font_data[unit]->raw_ptr);
+			kfree(font_data[unit]);
+		}
+		font_data[unit] = STI_DEF_FONT;
+	}
+}
+
+static int sticon_set_font(struct vc_data *vc, struct console_font *op,
+			   unsigned int vpitch)
+{
+	struct sti_struct *sti = sticon_sti;
+	int vc_cols, vc_rows, vc_old_cols, vc_old_rows;
+	int unit = vc->vc_num;
+	int w = op->width;
+	int h = op->height;
+	int size, i, bpc, pitch;
+	struct sti_rom_font *new_font;
+	struct sti_cooked_font *cooked_font;
+	unsigned char *data = op->data, *p;
+
+	if ((w < 6) || (h < 6) || (w > 32) || (h > 32) || (vpitch != 32)
+	    || (op->charcount != 256 && op->charcount != 512))
+		return -EINVAL;
+	pitch = ALIGN(w, 8) / 8;
+	bpc = pitch * h;
+	size = bpc * op->charcount;
+
+	new_font = kmalloc(sizeof(*new_font) + size, STI_LOWMEM);
+	if (!new_font)
+		return -ENOMEM;
+
+	new_font->first_char = 0;
+	new_font->last_char = op->charcount - 1;
+	new_font->width = w;
+	new_font->height = h;
+	new_font->font_type = STI_FONT_HPROMAN8;
+	new_font->bytes_per_char = bpc;
+	new_font->underline_height = 0;
+	new_font->underline_pos = 0;
+
+	cooked_font = kzalloc(sizeof(*cooked_font), GFP_KERNEL);
+	if (!cooked_font) {
+		kfree(new_font);
+		return -ENOMEM;
+	}
+	cooked_font->raw = new_font;
+	cooked_font->raw_ptr = new_font;
+	cooked_font->width = w;
+	cooked_font->height = h;
+	FNTREFCOUNT(cooked_font) = 0;	/* usage counter */
+
+	p = (unsigned char *) new_font;
+	p += sizeof(*new_font);
+	for (i = 0; i < op->charcount; i++) {
+		memcpy(p, data, bpc);
+		data += pitch*32;
+		p += bpc;
+	}
+	FNTCRC(cooked_font) = crc32(0, new_font, size + sizeof(*new_font));
+	sti_font_convert_bytemode(sti, cooked_font);
+	new_font = cooked_font->raw_ptr;
+
+	/* check if font is already used by other console */
+	for (i = 0; i < MAX_NR_CONSOLES; i++) {
+		if (font_data[i] != STI_DEF_FONT
+		    && (FNTCRC(font_data[i]) == FNTCRC(cooked_font))) {
+			kfree(new_font);
+			kfree(cooked_font);
+			/* current font is the same as the new one */
+			if (i == unit)
+				return 0;
+			cooked_font = font_data[i];
+			new_font = cooked_font->raw_ptr;
+			break;
+		}
+	}
+
+	/* clear screen with old font: we now may have less rows */
+	vc_old_rows = vc->vc_rows;
+	vc_old_cols = vc->vc_cols;
+	sti_clear(sticon_sti, 0, 0, vc_old_rows, vc_old_cols,
+		  vc->vc_video_erase_char, font_data[vc->vc_num]);
+
+	/* delete old font in case it is a user font */
+	sticon_set_def_font(unit);
+
+	FNTREFCOUNT(cooked_font)++;
+	font_data[unit] = cooked_font;
+
+	vc_cols = sti_onscreen_x(sti) / cooked_font->width;
+	vc_rows = sti_onscreen_y(sti) / cooked_font->height;
+	vc_resize(vc, vc_cols, vc_rows);
+
+	/* need to repaint screen if cols & rows are same as old font */
+	if (vc_cols == vc_old_cols && vc_rows == vc_old_rows)
+		update_screen(vc);
+
+	return 0;
+}
+
+static int sticon_font_default(struct vc_data *vc, struct console_font *op, char *name)
+{
+	sticon_set_def_font(vc->vc_num);
+
+	return 0;
+}
+
+static int sticon_font_set(struct vc_data *vc, struct console_font *font,
+			   unsigned int vpitch, unsigned int flags)
+{
+	return sticon_set_font(vc, font, vpitch);
+}
+
+static void sticon_init(struct vc_data *c, int init)
+{
+    struct sti_struct *sti = sticon_sti;
+    int vc_cols, vc_rows;
+
+    sti_set(sti, 0, 0, sti_onscreen_y(sti), sti_onscreen_x(sti), 0);
+    vc_cols = sti_onscreen_x(sti) / sti->font->width;
+    vc_rows = sti_onscreen_y(sti) / sti->font->height;
+    c->vc_can_do_color = 1;
+
+    if (init) {
+	c->vc_cols = vc_cols;
+	c->vc_rows = vc_rows;
+    } else {
+	vc_resize(c, vc_cols, vc_rows);
+    }
+}
+
+static void sticon_deinit(struct vc_data *c)
+{
+    int i;
+
+    /* free memory used by user font */
+    for (i = 0; i < MAX_NR_CONSOLES; i++)
+	sticon_set_def_font(i);
+}
+
+static void sticon_clear(struct vc_data *conp, int sy, int sx, int height,
+			 int width)
+{
+    if (!height || !width)
+	return;
+
+    sti_clear(sticon_sti, sy, sx, height, width,
+	      conp->vc_video_erase_char, font_data[conp->vc_num]);
+}
+
+static int sticon_switch(struct vc_data *conp)
+{
+    return 1;	/* needs refreshing */
+}
+
+static int sticon_blank(struct vc_data *c, int blank, int mode_switch)
+{
+    if (blank == 0) {
+	if (mode_switch)
+	    vga_is_gfx = 0;
+	return 1;
+    }
+    sti_clear(sticon_sti, 0, 0, c->vc_rows, c->vc_cols, BLANK,
+	      font_data[c->vc_num]);
+    if (mode_switch)
+	vga_is_gfx = 1;
+    return 1;
+}
+
+static u8 sticon_build_attr(struct vc_data *conp, u8 color,
+			    enum vc_intensity intens,
+			    bool blink, bool underline, bool reverse,
+			    bool italic)
+{
+	u8 fg = color & 7;
+	u8 bg = (color & 0x70) >> 4;
+
+	if (reverse)
+		return (fg << 3) | bg;
+	else
+		return (bg << 3) | fg;
+}
+
+static void sticon_invert_region(struct vc_data *conp, u16 *p, int count)
+{
+    int col = 1; /* vga_can_do_color; */
+
+    while (count--) {
+	u16 a = scr_readw(p);
+
+	if (col)
+		a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) | (((a) & 0x0700) << 4);
+	else
+		a = ((a & 0x0700) == 0x0100) ? 0x7000 : 0x7700;
+
+	scr_writew(a, p++);
+    }
+}
+
+static const struct consw sti_con = {
+	.owner			= THIS_MODULE,
+	.con_startup		= sticon_startup,
+	.con_init		= sticon_init,
+	.con_deinit		= sticon_deinit,
+	.con_clear		= sticon_clear,
+	.con_putc		= sticon_putc,
+	.con_putcs		= sticon_putcs,
+	.con_cursor		= sticon_cursor,
+	.con_scroll		= sticon_scroll,
+	.con_switch		= sticon_switch,
+	.con_blank		= sticon_blank,
+	.con_font_set		= sticon_font_set,
+	.con_font_default	= sticon_font_default,
+	.con_build_attr		= sticon_build_attr,
+	.con_invert_region	= sticon_invert_region,
+};
+
+
+
+static int __init sticonsole_init(void)
+{
+    int err, i;
+
+    /* already initialized ? */
+    if (sticon_sti)
+	 return 0;
+
+    sticon_sti = sti_get_rom(0);
+    if (!sticon_sti)
+	return -ENODEV;
+
+    for (i = 0; i < MAX_NR_CONSOLES; i++)
+	font_data[i] = STI_DEF_FONT;
+
+    pr_info("sticon: Initializing STI text console on %s at [%s]\n",
+	sticon_sti->sti_data->inq_outptr.dev_name,
+	sticon_sti->pa_path);
+    console_lock();
+    err = do_take_over_console(&sti_con, 0, MAX_NR_CONSOLES - 1,
+		PAGE0->mem_cons.cl_class != CL_DUPLEX);
+    console_unlock();
+
+    return err;
+}
+
+module_init(sticonsole_init);
+MODULE_LICENSE("GPL");
diff --git a/drivers/video/console/vgacon.c b/drivers/video/console/vgacon.c
new file mode 100644
index 000000000..7ad047bca
--- /dev/null
+++ b/drivers/video/console/vgacon.c
@@ -0,0 +1,1189 @@
+/*
+ *  linux/drivers/video/vgacon.c -- Low level VGA based console driver
+ *
+ *	Created 28 Sep 1997 by Geert Uytterhoeven
+ *
+ *	Rewritten by Martin Mares <mj@ucw.cz>, July 1998
+ *
+ *  This file is based on the old console.c, vga.c and vesa_blank.c drivers.
+ *
+ *	Copyright (C) 1991, 1992  Linus Torvalds
+ *			    1995  Jay Estabrook
+ *
+ *	User definable mapping table and font loading by Eugene G. Crosser,
+ *	<crosser@average.org>
+ *
+ *	Improved loadable font/UTF-8 support by H. Peter Anvin
+ *	Feb-Sep 1995 <peter.anvin@linux.org>
+ *
+ *	Colour palette handling, by Simon Tatham
+ *	17-Jun-95 <sgt20@cam.ac.uk>
+ *
+ *	if 512 char mode is already enabled don't re-enable it,
+ *	because it causes screen to flicker, by Mitja Horvat
+ *	5-May-96 <mitja.horvat@guest.arnes.si>
+ *
+ *	Use 2 outw instead of 4 outb_p to reduce erroneous text
+ *	flashing on RHS of screen during heavy console scrolling .
+ *	Oct 1996, Paul Gortmaker.
+ *
+ *
+ *  This file is subject to the terms and conditions of the GNU General Public
+ *  License.  See the file COPYING in the main directory of this archive for
+ *  more details.
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/fs.h>
+#include <linux/kernel.h>
+#include <linux/console.h>
+#include <linux/string.h>
+#include <linux/kd.h>
+#include <linux/slab.h>
+#include <linux/vt_kern.h>
+#include <linux/sched.h>
+#include <linux/selection.h>
+#include <linux/spinlock.h>
+#include <linux/ioport.h>
+#include <linux/init.h>
+#include <linux/screen_info.h>
+#include <video/vga.h>
+#include <asm/io.h>
+
+static DEFINE_RAW_SPINLOCK(vga_lock);
+static int cursor_size_lastfrom;
+static int cursor_size_lastto;
+static u32 vgacon_xres;
+static u32 vgacon_yres;
+static struct vgastate vgastate;
+
+#define BLANK 0x0020
+
+#define VGA_FONTWIDTH       8   /* VGA does not support fontwidths != 8 */
+/*
+ *  Interface used by the world
+ */
+
+static int vgacon_set_origin(struct vc_data *c);
+
+static struct uni_pagedict *vgacon_uni_pagedir;
+static int vgacon_refcount;
+
+/* Description of the hardware situation */
+static unsigned long	vga_vram_base		__read_mostly;	/* Base of video memory */
+static unsigned long	vga_vram_end		__read_mostly;	/* End of video memory */
+static unsigned int	vga_vram_size		__read_mostly;	/* Size of video memory */
+static u16		vga_video_port_reg	__read_mostly;	/* Video register select port */
+static u16		vga_video_port_val	__read_mostly;	/* Video register value port */
+static unsigned int	vga_video_num_columns;			/* Number of text columns */
+static unsigned int	vga_video_num_lines;			/* Number of text lines */
+static bool		vga_can_do_color;			/* Do we support colors? */
+static unsigned int	vga_default_font_height __read_mostly;	/* Height of default screen font */
+static unsigned char	vga_video_type		__read_mostly;	/* Card type */
+static int		vga_vesa_blanked;
+static bool 		vga_palette_blanked;
+static bool 		vga_is_gfx;
+static bool 		vga_512_chars;
+static int 		vga_video_font_height;
+static int 		vga_scan_lines		__read_mostly;
+static unsigned int 	vga_rolled_over; /* last vc_origin offset before wrap */
+
+static bool vga_hardscroll_enabled;
+static bool vga_hardscroll_user_enable = true;
+
+static int __init no_scroll(char *str)
+{
+	/*
+	 * Disabling scrollback is required for the Braillex ib80-piezo
+	 * Braille reader made by F.H. Papenmeier (Germany).
+	 * Use the "no-scroll" bootflag.
+	 */
+	vga_hardscroll_user_enable = vga_hardscroll_enabled = false;
+	return 1;
+}
+
+__setup("no-scroll", no_scroll);
+
+/*
+ * By replacing the four outb_p with two back to back outw, we can reduce
+ * the window of opportunity to see text mislocated to the RHS of the
+ * console during heavy scrolling activity. However there is the remote
+ * possibility that some pre-dinosaur hardware won't like the back to back
+ * I/O. Since the Xservers get away with it, we should be able to as well.
+ */
+static inline void write_vga(unsigned char reg, unsigned int val)
+{
+	unsigned int v1, v2;
+	unsigned long flags;
+
+	/*
+	 * ddprintk might set the console position from interrupt
+	 * handlers, thus the write has to be IRQ-atomic.
+	 */
+	raw_spin_lock_irqsave(&vga_lock, flags);
+	v1 = reg + (val & 0xff00);
+	v2 = reg + 1 + ((val << 8) & 0xff00);
+	outw(v1, vga_video_port_reg);
+	outw(v2, vga_video_port_reg);
+	raw_spin_unlock_irqrestore(&vga_lock, flags);
+}
+
+static inline void vga_set_mem_top(struct vc_data *c)
+{
+	write_vga(12, (c->vc_visible_origin - vga_vram_base) / 2);
+}
+
+static void vgacon_scrolldelta(struct vc_data *c, int lines)
+{
+	vc_scrolldelta_helper(c, lines, vga_rolled_over, (void *)vga_vram_base,
+			vga_vram_size);
+	vga_set_mem_top(c);
+}
+
+static void vgacon_restore_screen(struct vc_data *c)
+{
+	if (c->vc_origin != c->vc_visible_origin)
+		vgacon_scrolldelta(c, 0);
+}
+
+static const char *vgacon_startup(void)
+{
+	const char *display_desc = NULL;
+	u16 saved1, saved2;
+	volatile u16 *p;
+
+	if (screen_info.orig_video_isVGA == VIDEO_TYPE_VLFB ||
+	    screen_info.orig_video_isVGA == VIDEO_TYPE_EFI) {
+	      no_vga:
+#ifdef CONFIG_DUMMY_CONSOLE
+		conswitchp = &dummy_con;
+		return conswitchp->con_startup();
+#else
+		return NULL;
+#endif
+	}
+
+	/* boot_params.screen_info reasonably initialized? */
+	if ((screen_info.orig_video_lines == 0) ||
+	    (screen_info.orig_video_cols  == 0))
+		goto no_vga;
+
+	/* VGA16 modes are not handled by VGACON */
+	if ((screen_info.orig_video_mode == 0x0D) ||	/* 320x200/4 */
+	    (screen_info.orig_video_mode == 0x0E) ||	/* 640x200/4 */
+	    (screen_info.orig_video_mode == 0x10) ||	/* 640x350/4 */
+	    (screen_info.orig_video_mode == 0x12) ||	/* 640x480/4 */
+	    (screen_info.orig_video_mode == 0x6A))	/* 800x600/4 (VESA) */
+		goto no_vga;
+
+	vga_video_num_lines = screen_info.orig_video_lines;
+	vga_video_num_columns = screen_info.orig_video_cols;
+	vgastate.vgabase = NULL;
+
+	if (screen_info.orig_video_mode == 7) {
+		/* Monochrome display */
+		vga_vram_base = 0xb0000;
+		vga_video_port_reg = VGA_CRT_IM;
+		vga_video_port_val = VGA_CRT_DM;
+		if ((screen_info.orig_video_ega_bx & 0xff) != 0x10) {
+			static struct resource ega_console_resource =
+			    { .name	= "ega",
+			      .flags	= IORESOURCE_IO,
+			      .start	= 0x3B0,
+			      .end	= 0x3BF };
+			vga_video_type = VIDEO_TYPE_EGAM;
+			vga_vram_size = 0x8000;
+			display_desc = "EGA+";
+			request_resource(&ioport_resource,
+					 &ega_console_resource);
+		} else {
+			static struct resource mda1_console_resource =
+			    { .name	= "mda",
+			      .flags	= IORESOURCE_IO,
+			      .start	= 0x3B0,
+			      .end	= 0x3BB };
+			static struct resource mda2_console_resource =
+			    { .name	= "mda",
+			      .flags	= IORESOURCE_IO,
+			      .start	= 0x3BF,
+			      .end	= 0x3BF };
+			vga_video_type = VIDEO_TYPE_MDA;
+			vga_vram_size = 0x2000;
+			display_desc = "*MDA";
+			request_resource(&ioport_resource,
+					 &mda1_console_resource);
+			request_resource(&ioport_resource,
+					 &mda2_console_resource);
+			vga_video_font_height = 14;
+		}
+	} else {
+		/* If not, it is color. */
+		vga_can_do_color = true;
+		vga_vram_base = 0xb8000;
+		vga_video_port_reg = VGA_CRT_IC;
+		vga_video_port_val = VGA_CRT_DC;
+		if ((screen_info.orig_video_ega_bx & 0xff) != 0x10) {
+			int i;
+
+			vga_vram_size = 0x8000;
+
+			if (!screen_info.orig_video_isVGA) {
+				static struct resource ega_console_resource =
+				    { .name	= "ega",
+				      .flags	= IORESOURCE_IO,
+				      .start	= 0x3C0,
+				      .end	= 0x3DF };
+				vga_video_type = VIDEO_TYPE_EGAC;
+				display_desc = "EGA";
+				request_resource(&ioport_resource,
+						 &ega_console_resource);
+			} else {
+				static struct resource vga_console_resource =
+				    { .name	= "vga+",
+				      .flags	= IORESOURCE_IO,
+				      .start	= 0x3C0,
+				      .end	= 0x3DF };
+				vga_video_type = VIDEO_TYPE_VGAC;
+				display_desc = "VGA+";
+				request_resource(&ioport_resource,
+						 &vga_console_resource);
+
+				/*
+				 * Normalise the palette registers, to point
+				 * the 16 screen colours to the first 16
+				 * DAC entries.
+				 */
+
+				for (i = 0; i < 16; i++) {
+					inb_p(VGA_IS1_RC);
+					outb_p(i, VGA_ATT_W);
+					outb_p(i, VGA_ATT_W);
+				}
+				outb_p(0x20, VGA_ATT_W);
+
+				/*
+				 * Now set the DAC registers back to their
+				 * default values
+				 */
+				for (i = 0; i < 16; i++) {
+					outb_p(color_table[i], VGA_PEL_IW);
+					outb_p(default_red[i], VGA_PEL_D);
+					outb_p(default_grn[i], VGA_PEL_D);
+					outb_p(default_blu[i], VGA_PEL_D);
+				}
+			}
+		} else {
+			static struct resource cga_console_resource =
+			    { .name	= "cga",
+			      .flags	= IORESOURCE_IO,
+			      .start	= 0x3D4,
+			      .end	= 0x3D5 };
+			vga_video_type = VIDEO_TYPE_CGA;
+			vga_vram_size = 0x2000;
+			display_desc = "*CGA";
+			request_resource(&ioport_resource,
+					 &cga_console_resource);
+			vga_video_font_height = 8;
+		}
+	}
+
+	vga_vram_base = VGA_MAP_MEM(vga_vram_base, vga_vram_size);
+	vga_vram_end = vga_vram_base + vga_vram_size;
+
+	/*
+	 *      Find out if there is a graphics card present.
+	 *      Are there smarter methods around?
+	 */
+	p = (volatile u16 *) vga_vram_base;
+	saved1 = scr_readw(p);
+	saved2 = scr_readw(p + 1);
+	scr_writew(0xAA55, p);
+	scr_writew(0x55AA, p + 1);
+	if (scr_readw(p) != 0xAA55 || scr_readw(p + 1) != 0x55AA) {
+		scr_writew(saved1, p);
+		scr_writew(saved2, p + 1);
+		goto no_vga;
+	}
+	scr_writew(0x55AA, p);
+	scr_writew(0xAA55, p + 1);
+	if (scr_readw(p) != 0x55AA || scr_readw(p + 1) != 0xAA55) {
+		scr_writew(saved1, p);
+		scr_writew(saved2, p + 1);
+		goto no_vga;
+	}
+	scr_writew(saved1, p);
+	scr_writew(saved2, p + 1);
+
+	if (vga_video_type == VIDEO_TYPE_EGAC
+	    || vga_video_type == VIDEO_TYPE_VGAC
+	    || vga_video_type == VIDEO_TYPE_EGAM) {
+		vga_hardscroll_enabled = vga_hardscroll_user_enable;
+		vga_default_font_height = screen_info.orig_video_points;
+		vga_video_font_height = screen_info.orig_video_points;
+		/* This may be suboptimal but is a safe bet - go with it */
+		vga_scan_lines =
+		    vga_video_font_height * vga_video_num_lines;
+	}
+
+	vgacon_xres = screen_info.orig_video_cols * VGA_FONTWIDTH;
+	vgacon_yres = vga_scan_lines;
+
+	return display_desc;
+}
+
+static void vgacon_init(struct vc_data *c, int init)
+{
+	struct uni_pagedict *p;
+
+	/*
+	 * We cannot be loaded as a module, therefore init will be 1
+	 * if we are the default console, however if we are a fallback
+	 * console, for example if fbcon has failed registration, then
+	 * init will be 0, so we need to make sure our boot parameters
+	 * have been copied to the console structure for vgacon_resize
+	 * ultimately called by vc_resize.  Any subsequent calls to
+	 * vgacon_init init will have init set to 0 too.
+	 */
+	c->vc_can_do_color = vga_can_do_color;
+	c->vc_scan_lines = vga_scan_lines;
+	c->vc_font.height = c->vc_cell_height = vga_video_font_height;
+
+	/* set dimensions manually if init != 0 since vc_resize() will fail */
+	if (init) {
+		c->vc_cols = vga_video_num_columns;
+		c->vc_rows = vga_video_num_lines;
+	} else
+		vc_resize(c, vga_video_num_columns, vga_video_num_lines);
+
+	c->vc_complement_mask = 0x7700;
+	if (vga_512_chars)
+		c->vc_hi_font_mask = 0x0800;
+	p = *c->uni_pagedict_loc;
+	if (c->uni_pagedict_loc != &vgacon_uni_pagedir) {
+		con_free_unimap(c);
+		c->uni_pagedict_loc = &vgacon_uni_pagedir;
+		vgacon_refcount++;
+	}
+	if (!vgacon_uni_pagedir && p)
+		con_set_default_unimap(c);
+
+	/* Only set the default if the user didn't deliberately override it */
+	if (global_cursor_default == -1)
+		global_cursor_default =
+			!(screen_info.flags & VIDEO_FLAGS_NOCURSOR);
+}
+
+static void vgacon_deinit(struct vc_data *c)
+{
+	/* When closing the active console, reset video origin */
+	if (con_is_visible(c)) {
+		c->vc_visible_origin = vga_vram_base;
+		vga_set_mem_top(c);
+	}
+
+	if (!--vgacon_refcount)
+		con_free_unimap(c);
+	c->uni_pagedict_loc = &c->uni_pagedict;
+	con_set_default_unimap(c);
+}
+
+static u8 vgacon_build_attr(struct vc_data *c, u8 color,
+			    enum vc_intensity intensity,
+			    bool blink, bool underline, bool reverse,
+			    bool italic)
+{
+	u8 attr = color;
+
+	if (vga_can_do_color) {
+		if (italic)
+			attr = (attr & 0xF0) | c->vc_itcolor;
+		else if (underline)
+			attr = (attr & 0xf0) | c->vc_ulcolor;
+		else if (intensity == VCI_HALF_BRIGHT)
+			attr = (attr & 0xf0) | c->vc_halfcolor;
+	}
+	if (reverse)
+		attr =
+		    ((attr) & 0x88) | ((((attr) >> 4) | ((attr) << 4)) &
+				       0x77);
+	if (blink)
+		attr ^= 0x80;
+	if (intensity == VCI_BOLD)
+		attr ^= 0x08;
+	if (!vga_can_do_color) {
+		if (italic)
+			attr = (attr & 0xF8) | 0x02;
+		else if (underline)
+			attr = (attr & 0xf8) | 0x01;
+		else if (intensity == VCI_HALF_BRIGHT)
+			attr = (attr & 0xf0) | 0x08;
+	}
+	return attr;
+}
+
+static void vgacon_invert_region(struct vc_data *c, u16 * p, int count)
+{
+	const bool col = vga_can_do_color;
+
+	while (count--) {
+		u16 a = scr_readw(p);
+		if (col)
+			a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) |
+			    (((a) & 0x0700) << 4);
+		else
+			a ^= ((a & 0x0700) == 0x0100) ? 0x7000 : 0x7700;
+		scr_writew(a, p++);
+	}
+}
+
+static void vgacon_set_cursor_size(int from, int to)
+{
+	unsigned long flags;
+	int curs, cure;
+
+	if ((from == cursor_size_lastfrom) && (to == cursor_size_lastto))
+		return;
+	cursor_size_lastfrom = from;
+	cursor_size_lastto = to;
+
+	raw_spin_lock_irqsave(&vga_lock, flags);
+	if (vga_video_type >= VIDEO_TYPE_VGAC) {
+		outb_p(VGA_CRTC_CURSOR_START, vga_video_port_reg);
+		curs = inb_p(vga_video_port_val);
+		outb_p(VGA_CRTC_CURSOR_END, vga_video_port_reg);
+		cure = inb_p(vga_video_port_val);
+	} else {
+		curs = 0;
+		cure = 0;
+	}
+
+	curs = (curs & 0xc0) | from;
+	cure = (cure & 0xe0) | to;
+
+	outb_p(VGA_CRTC_CURSOR_START, vga_video_port_reg);
+	outb_p(curs, vga_video_port_val);
+	outb_p(VGA_CRTC_CURSOR_END, vga_video_port_reg);
+	outb_p(cure, vga_video_port_val);
+	raw_spin_unlock_irqrestore(&vga_lock, flags);
+}
+
+static void vgacon_cursor(struct vc_data *c, int mode)
+{
+	unsigned int c_height;
+
+	if (c->vc_mode != KD_TEXT)
+		return;
+
+	vgacon_restore_screen(c);
+
+	c_height = c->vc_cell_height;
+
+	switch (mode) {
+	case CM_ERASE:
+		write_vga(14, (c->vc_pos - vga_vram_base) / 2);
+	        if (vga_video_type >= VIDEO_TYPE_VGAC)
+			vgacon_set_cursor_size(31, 30);
+		else
+			vgacon_set_cursor_size(31, 31);
+		break;
+
+	case CM_MOVE:
+	case CM_DRAW:
+		write_vga(14, (c->vc_pos - vga_vram_base) / 2);
+		switch (CUR_SIZE(c->vc_cursor_type)) {
+		case CUR_UNDERLINE:
+			vgacon_set_cursor_size(c_height -
+					       (c_height < 10 ? 2 : 3),
+					       c_height -
+					       (c_height < 10 ? 1 : 2));
+			break;
+		case CUR_TWO_THIRDS:
+			vgacon_set_cursor_size(c_height / 3, c_height -
+					       (c_height < 10 ? 1 : 2));
+			break;
+		case CUR_LOWER_THIRD:
+			vgacon_set_cursor_size(c_height * 2 / 3, c_height -
+					       (c_height < 10 ? 1 : 2));
+			break;
+		case CUR_LOWER_HALF:
+			vgacon_set_cursor_size(c_height / 2, c_height -
+					       (c_height < 10 ? 1 : 2));
+			break;
+		case CUR_NONE:
+			if (vga_video_type >= VIDEO_TYPE_VGAC)
+				vgacon_set_cursor_size(31, 30);
+			else
+				vgacon_set_cursor_size(31, 31);
+			break;
+		default:
+			vgacon_set_cursor_size(1, c_height);
+			break;
+		}
+		break;
+	}
+}
+
+static void vgacon_doresize(struct vc_data *c,
+		unsigned int width, unsigned int height)
+{
+	unsigned long flags;
+	unsigned int scanlines = height * c->vc_cell_height;
+	u8 scanlines_lo = 0, r7 = 0, vsync_end = 0, mode, max_scan;
+
+	raw_spin_lock_irqsave(&vga_lock, flags);
+
+	vgacon_xres = width * VGA_FONTWIDTH;
+	vgacon_yres = height * c->vc_cell_height;
+	if (vga_video_type >= VIDEO_TYPE_VGAC) {
+		outb_p(VGA_CRTC_MAX_SCAN, vga_video_port_reg);
+		max_scan = inb_p(vga_video_port_val);
+
+		if (max_scan & 0x80)
+			scanlines <<= 1;
+
+		outb_p(VGA_CRTC_MODE, vga_video_port_reg);
+		mode = inb_p(vga_video_port_val);
+
+		if (mode & 0x04)
+			scanlines >>= 1;
+
+		scanlines -= 1;
+		scanlines_lo = scanlines & 0xff;
+
+		outb_p(VGA_CRTC_OVERFLOW, vga_video_port_reg);
+		r7 = inb_p(vga_video_port_val) & ~0x42;
+
+		if (scanlines & 0x100)
+			r7 |= 0x02;
+		if (scanlines & 0x200)
+			r7 |= 0x40;
+
+		/* deprotect registers */
+		outb_p(VGA_CRTC_V_SYNC_END, vga_video_port_reg);
+		vsync_end = inb_p(vga_video_port_val);
+		outb_p(VGA_CRTC_V_SYNC_END, vga_video_port_reg);
+		outb_p(vsync_end & ~0x80, vga_video_port_val);
+	}
+
+	outb_p(VGA_CRTC_H_DISP, vga_video_port_reg);
+	outb_p(width - 1, vga_video_port_val);
+	outb_p(VGA_CRTC_OFFSET, vga_video_port_reg);
+	outb_p(width >> 1, vga_video_port_val);
+
+	if (vga_video_type >= VIDEO_TYPE_VGAC) {
+		outb_p(VGA_CRTC_V_DISP_END, vga_video_port_reg);
+		outb_p(scanlines_lo, vga_video_port_val);
+		outb_p(VGA_CRTC_OVERFLOW, vga_video_port_reg);
+		outb_p(r7,vga_video_port_val);
+
+		/* reprotect registers */
+		outb_p(VGA_CRTC_V_SYNC_END, vga_video_port_reg);
+		outb_p(vsync_end, vga_video_port_val);
+	}
+
+	raw_spin_unlock_irqrestore(&vga_lock, flags);
+}
+
+static int vgacon_switch(struct vc_data *c)
+{
+	int x = c->vc_cols * VGA_FONTWIDTH;
+	int y = c->vc_rows * c->vc_cell_height;
+	int rows = screen_info.orig_video_lines * vga_default_font_height/
+		c->vc_cell_height;
+	/*
+	 * We need to save screen size here as it's the only way
+	 * we can spot the screen has been resized and we need to
+	 * set size of freshly allocated screens ourselves.
+	 */
+	vga_video_num_columns = c->vc_cols;
+	vga_video_num_lines = c->vc_rows;
+
+	/* We can only copy out the size of the video buffer here,
+	 * otherwise we get into VGA BIOS */
+
+	if (!vga_is_gfx) {
+		scr_memcpyw((u16 *) c->vc_origin, (u16 *) c->vc_screenbuf,
+			    c->vc_screenbuf_size > vga_vram_size ?
+				vga_vram_size : c->vc_screenbuf_size);
+
+		if ((vgacon_xres != x || vgacon_yres != y) &&
+		    (!(vga_video_num_columns % 2) &&
+		     vga_video_num_columns <= screen_info.orig_video_cols &&
+		     vga_video_num_lines <= rows))
+			vgacon_doresize(c, c->vc_cols, c->vc_rows);
+	}
+
+	return 0;		/* Redrawing not needed */
+}
+
+static void vga_set_palette(struct vc_data *vc, const unsigned char *table)
+{
+	int i, j;
+
+	vga_w(vgastate.vgabase, VGA_PEL_MSK, 0xff);
+	for (i = j = 0; i < 16; i++) {
+		vga_w(vgastate.vgabase, VGA_PEL_IW, table[i]);
+		vga_w(vgastate.vgabase, VGA_PEL_D, vc->vc_palette[j++] >> 2);
+		vga_w(vgastate.vgabase, VGA_PEL_D, vc->vc_palette[j++] >> 2);
+		vga_w(vgastate.vgabase, VGA_PEL_D, vc->vc_palette[j++] >> 2);
+	}
+}
+
+static void vgacon_set_palette(struct vc_data *vc, const unsigned char *table)
+{
+	if (vga_video_type != VIDEO_TYPE_VGAC || vga_palette_blanked
+	    || !con_is_visible(vc))
+		return;
+	vga_set_palette(vc, table);
+}
+
+/* structure holding original VGA register settings */
+static struct {
+	unsigned char SeqCtrlIndex;	/* Sequencer Index reg.   */
+	unsigned char CrtCtrlIndex;	/* CRT-Contr. Index reg.  */
+	unsigned char CrtMiscIO;	/* Miscellaneous register */
+	unsigned char HorizontalTotal;	/* CRT-Controller:00h */
+	unsigned char HorizDisplayEnd;	/* CRT-Controller:01h */
+	unsigned char StartHorizRetrace;	/* CRT-Controller:04h */
+	unsigned char EndHorizRetrace;	/* CRT-Controller:05h */
+	unsigned char Overflow;	/* CRT-Controller:07h */
+	unsigned char StartVertRetrace;	/* CRT-Controller:10h */
+	unsigned char EndVertRetrace;	/* CRT-Controller:11h */
+	unsigned char ModeControl;	/* CRT-Controller:17h */
+	unsigned char ClockingMode;	/* Seq-Controller:01h */
+} vga_state;
+
+static void vga_vesa_blank(struct vgastate *state, int mode)
+{
+	/* save original values of VGA controller registers */
+	if (!vga_vesa_blanked) {
+		raw_spin_lock_irq(&vga_lock);
+		vga_state.SeqCtrlIndex = vga_r(state->vgabase, VGA_SEQ_I);
+		vga_state.CrtCtrlIndex = inb_p(vga_video_port_reg);
+		vga_state.CrtMiscIO = vga_r(state->vgabase, VGA_MIS_R);
+		raw_spin_unlock_irq(&vga_lock);
+
+		outb_p(0x00, vga_video_port_reg);	/* HorizontalTotal */
+		vga_state.HorizontalTotal = inb_p(vga_video_port_val);
+		outb_p(0x01, vga_video_port_reg);	/* HorizDisplayEnd */
+		vga_state.HorizDisplayEnd = inb_p(vga_video_port_val);
+		outb_p(0x04, vga_video_port_reg);	/* StartHorizRetrace */
+		vga_state.StartHorizRetrace = inb_p(vga_video_port_val);
+		outb_p(0x05, vga_video_port_reg);	/* EndHorizRetrace */
+		vga_state.EndHorizRetrace = inb_p(vga_video_port_val);
+		outb_p(0x07, vga_video_port_reg);	/* Overflow */
+		vga_state.Overflow = inb_p(vga_video_port_val);
+		outb_p(0x10, vga_video_port_reg);	/* StartVertRetrace */
+		vga_state.StartVertRetrace = inb_p(vga_video_port_val);
+		outb_p(0x11, vga_video_port_reg);	/* EndVertRetrace */
+		vga_state.EndVertRetrace = inb_p(vga_video_port_val);
+		outb_p(0x17, vga_video_port_reg);	/* ModeControl */
+		vga_state.ModeControl = inb_p(vga_video_port_val);
+		vga_state.ClockingMode = vga_rseq(state->vgabase, VGA_SEQ_CLOCK_MODE);
+	}
+
+	/* assure that video is enabled */
+	/* "0x20" is VIDEO_ENABLE_bit in register 01 of sequencer */
+	raw_spin_lock_irq(&vga_lock);
+	vga_wseq(state->vgabase, VGA_SEQ_CLOCK_MODE, vga_state.ClockingMode | 0x20);
+
+	/* test for vertical retrace in process.... */
+	if ((vga_state.CrtMiscIO & 0x80) == 0x80)
+		vga_w(state->vgabase, VGA_MIS_W, vga_state.CrtMiscIO & 0xEF);
+
+	/*
+	 * Set <End of vertical retrace> to minimum (0) and
+	 * <Start of vertical Retrace> to maximum (incl. overflow)
+	 * Result: turn off vertical sync (VSync) pulse.
+	 */
+	if (mode & VESA_VSYNC_SUSPEND) {
+		outb_p(0x10, vga_video_port_reg);	/* StartVertRetrace */
+		outb_p(0xff, vga_video_port_val);	/* maximum value */
+		outb_p(0x11, vga_video_port_reg);	/* EndVertRetrace */
+		outb_p(0x40, vga_video_port_val);	/* minimum (bits 0..3)  */
+		outb_p(0x07, vga_video_port_reg);	/* Overflow */
+		outb_p(vga_state.Overflow | 0x84, vga_video_port_val);	/* bits 9,10 of vert. retrace */
+	}
+
+	if (mode & VESA_HSYNC_SUSPEND) {
+		/*
+		 * Set <End of horizontal retrace> to minimum (0) and
+		 *  <Start of horizontal Retrace> to maximum
+		 * Result: turn off horizontal sync (HSync) pulse.
+		 */
+		outb_p(0x04, vga_video_port_reg);	/* StartHorizRetrace */
+		outb_p(0xff, vga_video_port_val);	/* maximum */
+		outb_p(0x05, vga_video_port_reg);	/* EndHorizRetrace */
+		outb_p(0x00, vga_video_port_val);	/* minimum (0) */
+	}
+
+	/* restore both index registers */
+	vga_w(state->vgabase, VGA_SEQ_I, vga_state.SeqCtrlIndex);
+	outb_p(vga_state.CrtCtrlIndex, vga_video_port_reg);
+	raw_spin_unlock_irq(&vga_lock);
+}
+
+static void vga_vesa_unblank(struct vgastate *state)
+{
+	/* restore original values of VGA controller registers */
+	raw_spin_lock_irq(&vga_lock);
+	vga_w(state->vgabase, VGA_MIS_W, vga_state.CrtMiscIO);
+
+	outb_p(0x00, vga_video_port_reg);	/* HorizontalTotal */
+	outb_p(vga_state.HorizontalTotal, vga_video_port_val);
+	outb_p(0x01, vga_video_port_reg);	/* HorizDisplayEnd */
+	outb_p(vga_state.HorizDisplayEnd, vga_video_port_val);
+	outb_p(0x04, vga_video_port_reg);	/* StartHorizRetrace */
+	outb_p(vga_state.StartHorizRetrace, vga_video_port_val);
+	outb_p(0x05, vga_video_port_reg);	/* EndHorizRetrace */
+	outb_p(vga_state.EndHorizRetrace, vga_video_port_val);
+	outb_p(0x07, vga_video_port_reg);	/* Overflow */
+	outb_p(vga_state.Overflow, vga_video_port_val);
+	outb_p(0x10, vga_video_port_reg);	/* StartVertRetrace */
+	outb_p(vga_state.StartVertRetrace, vga_video_port_val);
+	outb_p(0x11, vga_video_port_reg);	/* EndVertRetrace */
+	outb_p(vga_state.EndVertRetrace, vga_video_port_val);
+	outb_p(0x17, vga_video_port_reg);	/* ModeControl */
+	outb_p(vga_state.ModeControl, vga_video_port_val);
+	/* ClockingMode */
+	vga_wseq(state->vgabase, VGA_SEQ_CLOCK_MODE, vga_state.ClockingMode);
+
+	/* restore index/control registers */
+	vga_w(state->vgabase, VGA_SEQ_I, vga_state.SeqCtrlIndex);
+	outb_p(vga_state.CrtCtrlIndex, vga_video_port_reg);
+	raw_spin_unlock_irq(&vga_lock);
+}
+
+static void vga_pal_blank(struct vgastate *state)
+{
+	int i;
+
+	vga_w(state->vgabase, VGA_PEL_MSK, 0xff);
+	for (i = 0; i < 16; i++) {
+		vga_w(state->vgabase, VGA_PEL_IW, i);
+		vga_w(state->vgabase, VGA_PEL_D, 0);
+		vga_w(state->vgabase, VGA_PEL_D, 0);
+		vga_w(state->vgabase, VGA_PEL_D, 0);
+	}
+}
+
+static int vgacon_blank(struct vc_data *c, int blank, int mode_switch)
+{
+	switch (blank) {
+	case 0:		/* Unblank */
+		if (vga_vesa_blanked) {
+			vga_vesa_unblank(&vgastate);
+			vga_vesa_blanked = 0;
+		}
+		if (vga_palette_blanked) {
+			vga_set_palette(c, color_table);
+			vga_palette_blanked = false;
+			return 0;
+		}
+		vga_is_gfx = false;
+		/* Tell console.c that it has to restore the screen itself */
+		return 1;
+	case 1:		/* Normal blanking */
+	case -1:	/* Obsolete */
+		if (!mode_switch && vga_video_type == VIDEO_TYPE_VGAC) {
+			vga_pal_blank(&vgastate);
+			vga_palette_blanked = true;
+			return 0;
+		}
+		vgacon_set_origin(c);
+		scr_memsetw((void *) vga_vram_base, BLANK,
+			    c->vc_screenbuf_size);
+		if (mode_switch)
+			vga_is_gfx = true;
+		return 1;
+	default:		/* VESA blanking */
+		if (vga_video_type == VIDEO_TYPE_VGAC) {
+			vga_vesa_blank(&vgastate, blank - 1);
+			vga_vesa_blanked = blank;
+		}
+		return 0;
+	}
+}
+
+/*
+ * PIO_FONT support.
+ *
+ * The font loading code goes back to the codepage package by
+ * Joel Hoffman (joel@wam.umd.edu). (He reports that the original
+ * reference is: "From: p. 307 of _Programmer's Guide to PC & PS/2
+ * Video Systems_ by Richard Wilton. 1987.  Microsoft Press".)
+ *
+ * Change for certain monochrome monitors by Yury Shevchuck
+ * (sizif@botik.yaroslavl.su).
+ */
+
+#define colourmap 0xa0000
+/* Pauline Middelink <middelin@polyware.iaf.nl> reports that we
+   should use 0xA0000 for the bwmap as well.. */
+#define blackwmap 0xa0000
+#define cmapsz 8192
+
+static int vgacon_do_font_op(struct vgastate *state, char *arg, int set,
+		bool ch512)
+{
+	unsigned short video_port_status = vga_video_port_reg + 6;
+	int font_select = 0x00, beg, i;
+	char *charmap;
+	bool clear_attribs = false;
+	if (vga_video_type != VIDEO_TYPE_EGAM) {
+		charmap = (char *) VGA_MAP_MEM(colourmap, 0);
+		beg = 0x0e;
+	} else {
+		charmap = (char *) VGA_MAP_MEM(blackwmap, 0);
+		beg = 0x0a;
+	}
+
+	/*
+	 * All fonts are loaded in slot 0 (0:1 for 512 ch)
+	 */
+
+	if (!arg)
+		return -EINVAL;	/* Return to default font not supported */
+
+	font_select = ch512 ? 0x04 : 0x00;
+
+	raw_spin_lock_irq(&vga_lock);
+	/* First, the Sequencer */
+	vga_wseq(state->vgabase, VGA_SEQ_RESET, 0x1);
+	/* CPU writes only to map 2 */
+	vga_wseq(state->vgabase, VGA_SEQ_PLANE_WRITE, 0x04);	
+	/* Sequential addressing */
+	vga_wseq(state->vgabase, VGA_SEQ_MEMORY_MODE, 0x07);	
+	/* Clear synchronous reset */
+	vga_wseq(state->vgabase, VGA_SEQ_RESET, 0x03);
+
+	/* Now, the graphics controller, select map 2 */
+	vga_wgfx(state->vgabase, VGA_GFX_PLANE_READ, 0x02);		
+	/* disable odd-even addressing */
+	vga_wgfx(state->vgabase, VGA_GFX_MODE, 0x00);
+	/* map start at A000:0000 */
+	vga_wgfx(state->vgabase, VGA_GFX_MISC, 0x00);
+	raw_spin_unlock_irq(&vga_lock);
+
+	if (arg) {
+		if (set)
+			for (i = 0; i < cmapsz; i++) {
+				vga_writeb(arg[i], charmap + i);
+				cond_resched();
+			}
+		else
+			for (i = 0; i < cmapsz; i++) {
+				arg[i] = vga_readb(charmap + i);
+				cond_resched();
+			}
+
+		/*
+		 * In 512-character mode, the character map is not contiguous if
+		 * we want to remain EGA compatible -- which we do
+		 */
+
+		if (ch512) {
+			charmap += 2 * cmapsz;
+			arg += cmapsz;
+			if (set)
+				for (i = 0; i < cmapsz; i++) {
+					vga_writeb(arg[i], charmap + i);
+					cond_resched();
+				}
+			else
+				for (i = 0; i < cmapsz; i++) {
+					arg[i] = vga_readb(charmap + i);
+					cond_resched();
+				}
+		}
+	}
+
+	raw_spin_lock_irq(&vga_lock);
+	/* First, the sequencer, Synchronous reset */
+	vga_wseq(state->vgabase, VGA_SEQ_RESET, 0x01);	
+	/* CPU writes to maps 0 and 1 */
+	vga_wseq(state->vgabase, VGA_SEQ_PLANE_WRITE, 0x03);
+	/* odd-even addressing */
+	vga_wseq(state->vgabase, VGA_SEQ_MEMORY_MODE, 0x03);
+	/* Character Map Select */
+	if (set)
+		vga_wseq(state->vgabase, VGA_SEQ_CHARACTER_MAP, font_select);
+	/* clear synchronous reset */
+	vga_wseq(state->vgabase, VGA_SEQ_RESET, 0x03);
+
+	/* Now, the graphics controller, select map 0 for CPU */
+	vga_wgfx(state->vgabase, VGA_GFX_PLANE_READ, 0x00);
+	/* enable even-odd addressing */
+	vga_wgfx(state->vgabase, VGA_GFX_MODE, 0x10);
+	/* map starts at b800:0 or b000:0 */
+	vga_wgfx(state->vgabase, VGA_GFX_MISC, beg);
+
+	/* if 512 char mode is already enabled don't re-enable it. */
+	if ((set) && (ch512 != vga_512_chars)) {
+		vga_512_chars = ch512;
+		/* 256-char: enable intensity bit
+		   512-char: disable intensity bit */
+		inb_p(video_port_status);	/* clear address flip-flop */
+		/* color plane enable register */
+		vga_wattr(state->vgabase, VGA_ATC_PLANE_ENABLE, ch512 ? 0x07 : 0x0f);
+		/* Wilton (1987) mentions the following; I don't know what
+		   it means, but it works, and it appears necessary */
+		inb_p(video_port_status);
+		vga_wattr(state->vgabase, VGA_AR_ENABLE_DISPLAY, 0);	
+		clear_attribs = true;
+	}
+	raw_spin_unlock_irq(&vga_lock);
+
+	if (clear_attribs) {
+		for (i = 0; i < MAX_NR_CONSOLES; i++) {
+			struct vc_data *c = vc_cons[i].d;
+			if (c && c->vc_sw == &vga_con) {
+				/* force hi font mask to 0, so we always clear
+				   the bit on either transition */
+				c->vc_hi_font_mask = 0x00;
+				clear_buffer_attributes(c);
+				c->vc_hi_font_mask = ch512 ? 0x0800 : 0;
+			}
+		}
+	}
+	return 0;
+}
+
+/*
+ * Adjust the screen to fit a font of a certain height
+ */
+static int vgacon_adjust_height(struct vc_data *vc, unsigned fontheight)
+{
+	unsigned char ovr, vde, fsr;
+	int rows, maxscan, i;
+
+	rows = vc->vc_scan_lines / fontheight;	/* Number of video rows we end up with */
+	maxscan = rows * fontheight - 1;	/* Scan lines to actually display-1 */
+
+	/* Reprogram the CRTC for the new font size
+	   Note: the attempt to read the overflow register will fail
+	   on an EGA, but using 0xff for the previous value appears to
+	   be OK for EGA text modes in the range 257-512 scan lines, so I
+	   guess we don't need to worry about it.
+
+	   The same applies for the spill bits in the font size and cursor
+	   registers; they are write-only on EGA, but it appears that they
+	   are all don't care bits on EGA, so I guess it doesn't matter. */
+
+	raw_spin_lock_irq(&vga_lock);
+	outb_p(0x07, vga_video_port_reg);	/* CRTC overflow register */
+	ovr = inb_p(vga_video_port_val);
+	outb_p(0x09, vga_video_port_reg);	/* Font size register */
+	fsr = inb_p(vga_video_port_val);
+	raw_spin_unlock_irq(&vga_lock);
+
+	vde = maxscan & 0xff;	/* Vertical display end reg */
+	ovr = (ovr & 0xbd) +	/* Overflow register */
+	    ((maxscan & 0x100) >> 7) + ((maxscan & 0x200) >> 3);
+	fsr = (fsr & 0xe0) + (fontheight - 1);	/*  Font size register */
+
+	raw_spin_lock_irq(&vga_lock);
+	outb_p(0x07, vga_video_port_reg);	/* CRTC overflow register */
+	outb_p(ovr, vga_video_port_val);
+	outb_p(0x09, vga_video_port_reg);	/* Font size */
+	outb_p(fsr, vga_video_port_val);
+	outb_p(0x12, vga_video_port_reg);	/* Vertical display limit */
+	outb_p(vde, vga_video_port_val);
+	raw_spin_unlock_irq(&vga_lock);
+	vga_video_font_height = fontheight;
+
+	for (i = 0; i < MAX_NR_CONSOLES; i++) {
+		struct vc_data *c = vc_cons[i].d;
+
+		if (c && c->vc_sw == &vga_con) {
+			if (con_is_visible(c)) {
+			        /* void size to cause regs to be rewritten */
+				cursor_size_lastfrom = 0;
+				cursor_size_lastto = 0;
+				c->vc_sw->con_cursor(c, CM_DRAW);
+			}
+			c->vc_font.height = c->vc_cell_height = fontheight;
+			vc_resize(c, 0, rows);	/* Adjust console size */
+		}
+	}
+	return 0;
+}
+
+static int vgacon_font_set(struct vc_data *c, struct console_font *font,
+			   unsigned int vpitch, unsigned int flags)
+{
+	unsigned charcount = font->charcount;
+	int rc;
+
+	if (vga_video_type < VIDEO_TYPE_EGAM)
+		return -EINVAL;
+
+	if (font->width != VGA_FONTWIDTH || font->height > 32 || vpitch != 32 ||
+	    (charcount != 256 && charcount != 512))
+		return -EINVAL;
+
+	rc = vgacon_do_font_op(&vgastate, font->data, 1, charcount == 512);
+	if (rc)
+		return rc;
+
+	if (!(flags & KD_FONT_FLAG_DONT_RECALC))
+		rc = vgacon_adjust_height(c, font->height);
+	return rc;
+}
+
+static int vgacon_font_get(struct vc_data *c, struct console_font *font, unsigned int vpitch)
+{
+	if (vga_video_type < VIDEO_TYPE_EGAM || vpitch != 32)
+		return -EINVAL;
+
+	font->width = VGA_FONTWIDTH;
+	font->height = c->vc_font.height;
+	font->charcount = vga_512_chars ? 512 : 256;
+	if (!font->data)
+		return 0;
+	return vgacon_do_font_op(&vgastate, font->data, 0, vga_512_chars);
+}
+
+static int vgacon_resize(struct vc_data *c, unsigned int width,
+			 unsigned int height, unsigned int user)
+{
+	if ((width << 1) * height > vga_vram_size)
+		return -EINVAL;
+
+	if (user) {
+		/*
+		 * Ho ho!  Someone (svgatextmode, eh?) may have reprogrammed
+		 * the video mode!  Set the new defaults then and go away.
+		 */
+		screen_info.orig_video_cols = width;
+		screen_info.orig_video_lines = height;
+		vga_default_font_height = c->vc_cell_height;
+		return 0;
+	}
+	if (width % 2 || width > screen_info.orig_video_cols ||
+	    height > (screen_info.orig_video_lines * vga_default_font_height)/
+	    c->vc_cell_height)
+		return -EINVAL;
+
+	if (con_is_visible(c) && !vga_is_gfx) /* who knows */
+		vgacon_doresize(c, width, height);
+	return 0;
+}
+
+static int vgacon_set_origin(struct vc_data *c)
+{
+	if (vga_is_gfx ||	/* We don't play origin tricks in graphic modes */
+	    (console_blanked && !vga_palette_blanked))	/* Nor we write to blanked screens */
+		return 0;
+	c->vc_origin = c->vc_visible_origin = vga_vram_base;
+	vga_set_mem_top(c);
+	vga_rolled_over = 0;
+	return 1;
+}
+
+static void vgacon_save_screen(struct vc_data *c)
+{
+	static int vga_bootup_console = 0;
+
+	if (!vga_bootup_console) {
+		/* This is a gross hack, but here is the only place we can
+		 * set bootup console parameters without messing up generic
+		 * console initialization routines.
+		 */
+		vga_bootup_console = 1;
+		c->state.x = screen_info.orig_x;
+		c->state.y = screen_info.orig_y;
+	}
+
+	/* We can't copy in more than the size of the video buffer,
+	 * or we'll be copying in VGA BIOS */
+
+	if (!vga_is_gfx)
+		scr_memcpyw((u16 *) c->vc_screenbuf, (u16 *) c->vc_origin,
+			    c->vc_screenbuf_size > vga_vram_size ? vga_vram_size : c->vc_screenbuf_size);
+}
+
+static bool vgacon_scroll(struct vc_data *c, unsigned int t, unsigned int b,
+		enum con_scroll dir, unsigned int lines)
+{
+	unsigned long oldo;
+	unsigned int delta;
+
+	if (t || b != c->vc_rows || vga_is_gfx || c->vc_mode != KD_TEXT)
+		return false;
+
+	if (!vga_hardscroll_enabled || lines >= c->vc_rows / 2)
+		return false;
+
+	vgacon_restore_screen(c);
+	oldo = c->vc_origin;
+	delta = lines * c->vc_size_row;
+	if (dir == SM_UP) {
+		if (c->vc_scr_end + delta >= vga_vram_end) {
+			scr_memcpyw((u16 *) vga_vram_base,
+				    (u16 *) (oldo + delta),
+				    c->vc_screenbuf_size - delta);
+			c->vc_origin = vga_vram_base;
+			vga_rolled_over = oldo - vga_vram_base;
+		} else
+			c->vc_origin += delta;
+		scr_memsetw((u16 *) (c->vc_origin + c->vc_screenbuf_size -
+				     delta), c->vc_video_erase_char,
+			    delta);
+	} else {
+		if (oldo - delta < vga_vram_base) {
+			scr_memmovew((u16 *) (vga_vram_end -
+					      c->vc_screenbuf_size +
+					      delta), (u16 *) oldo,
+				     c->vc_screenbuf_size - delta);
+			c->vc_origin = vga_vram_end - c->vc_screenbuf_size;
+			vga_rolled_over = 0;
+		} else
+			c->vc_origin -= delta;
+		c->vc_scr_end = c->vc_origin + c->vc_screenbuf_size;
+		scr_memsetw((u16 *) (c->vc_origin), c->vc_video_erase_char,
+			    delta);
+	}
+	c->vc_scr_end = c->vc_origin + c->vc_screenbuf_size;
+	c->vc_visible_origin = c->vc_origin;
+	vga_set_mem_top(c);
+	c->vc_pos = (c->vc_pos - oldo) + c->vc_origin;
+	return true;
+}
+
+/*
+ *  The console `switch' structure for the VGA based console
+ */
+
+static void vgacon_clear(struct vc_data *vc, int sy, int sx, int height,
+			 int width) { }
+static void vgacon_putc(struct vc_data *vc, int c, int ypos, int xpos) { }
+static void vgacon_putcs(struct vc_data *vc, const unsigned short *s,
+			 int count, int ypos, int xpos) { }
+
+const struct consw vga_con = {
+	.owner = THIS_MODULE,
+	.con_startup = vgacon_startup,
+	.con_init = vgacon_init,
+	.con_deinit = vgacon_deinit,
+	.con_clear = vgacon_clear,
+	.con_putc = vgacon_putc,
+	.con_putcs = vgacon_putcs,
+	.con_cursor = vgacon_cursor,
+	.con_scroll = vgacon_scroll,
+	.con_switch = vgacon_switch,
+	.con_blank = vgacon_blank,
+	.con_font_set = vgacon_font_set,
+	.con_font_get = vgacon_font_get,
+	.con_resize = vgacon_resize,
+	.con_set_palette = vgacon_set_palette,
+	.con_scrolldelta = vgacon_scrolldelta,
+	.con_set_origin = vgacon_set_origin,
+	.con_save_screen = vgacon_save_screen,
+	.con_build_attr = vgacon_build_attr,
+	.con_invert_region = vgacon_invert_region,
+};
+EXPORT_SYMBOL(vga_con);
+
+MODULE_LICENSE("GPL");