From 034dd340b08be1f2f0477ad16131d609f9dbd53c Mon Sep 17 00:00:00 2001
From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Sun, 30 Aug 2026 09:22:00 -0700
Subject: Merge tag 'trace-v7.3-2' of
 git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Pull tracing fixes from Steven Rostedt:

 - Fix error output of boot instance creation failure

   Currently if a boot instance creation fails, instead of printing out
   the name of the instance that failed, it prints "(null)". That is
   because it prints "cur_str" that had already been processed by
   strsep(). Print the saved name instead.

   While at it, print the error code of the failure.

 - Fix use-after-free for same named historgrams

   Histograms can be named so that they can be used in multiple events.
   But if the named histogram has a variable attached, the second event
   that uses the named histogram which duplicates it and needs to free
   the original after duplication leaves the old variable in place and
   still visible. If another histogram uses than variable, it will use
   the stale one which will try to reference the freed duplicate
   histogram and crash the kernel.

   Free the duplicate variables along with the duplicated histogram
   data.

 - Check return value of kthread_run() in event self test

   The events self tests uses a kthread for testing but does not check
   if it succeeded in creating a kthread. If the kthread creation were
   to fail, the code will still try to call kthread_stop() on the error
   returned.

 - Fix race between reading trace_pipe and updating subbuffer size

   If a user is reading the trace_pipe file at the same time they update
   the ring buffer sub-buffer size, can cause the trace_pipe read to
   read stale data. Add trace_access_lock() around updating the ring
   buffer sub-buffer size.

 - Fix eventfs_inode on failure path in creation of the events directory

   In the creation of the "events" directory, if after allocating the
   eventfs_inode a failure is detected, it calls cleanup_ei() which
   calls free_ei(). The free_ei() will test if eventfs_inode being freed
   has no children. It is a bug if it does. But on the failure case of
   the creation of the "events" directory, the children lists have not
   yet been initialized and the free will trigger a warning because
   list_empty() on an uninitialized list returns false.

   Move the initialization into init_ei() where it makes more sense and
   makes sure that a created eventfs_inode has its lists initialized
   upon creation.

 - Check return value of kthread_run() in ftrace direct sample code

   The sample code that shows how to use the ftrace direct calls does
   not test the return of kthread_run() to see if it succeeds. Return a
   failure if the kthread_run() doesn't succeed.

 - Clear user events state on fork in case of alloc failure

   On fork, the child gets a pointer to the parent's user events state.
   It makes a copy of it then updates the child's pointer to it. But if
   the allocation fails, the duplication function leaves the child with
   a pointer to its parent's descriptor. When the child cleans up its
   data, it will free the parent's descriptor while the parent is still
   using it.

   In the duplication function, set the child's user_event_mm to NULL
   before testing if the allocation succeeded, and when it exits it will
   not free the parent's descriptor.

 - Fix retry exhaustion in simple ring buffer reader swap

   simple_ring_buffer_swap_reader_page() starts with retry set to 8 and
   post-decrements it only after a failed link replacement. On the final
   attempt, a successful replacement leaves retry at zero, while a
   failed replacement leaves it at -1.

   But the check for success expects the retry value to be non-zero and
   exits with an error on zero. This is the opposite result. Fix it.

 - Fail nicely when the remote swap_reader_page() returns an error

   Currently, if the swap_reader_page() of a remote buffer fails, it
   triggers a WARN_ON_ONCE() and continues normally. Instead, have it
   exit with an error and a pr_warn() print instead of a full WARNING.

* tag 'trace-v7.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  ring-buffer: Stop remote reader update when page swap fails
  tracing: Fix retry exhaustion in simple ring buffer reader swap
  tracing/user_events: Clear copied tracing state before fork duplication
  samples/ftrace: Fix kthread_stop() on ERR_PTR in ftrace-direct-multi-modify
  samples/ftrace: Fix kthread_stop() on ERR_PTR in ftrace-direct-modify
  eventfs: Initialize ei->children and ei->list in init_ei()
  tracing: Fix use-after-free in trace_pipe read on sub-buffer order change
  tracing: Fix crash passing ERR_PTR to kthread_stop()
  tracing: Fix use-after-free with same-name named triggers
  tracing: Fix logged instance name on creation failure
---
 drivers/video/console/Kconfig       |  138 ++++
 drivers/video/console/Makefile      |    9 +
 drivers/video/console/dummycon.c    |  159 +++++
 drivers/video/console/newport_con.c |  725 +++++++++++++++++++++
 drivers/video/console/sticon.c      |  395 +++++++++++
 drivers/video/console/vgacon.c      | 1226 +++++++++++++++++++++++++++++++++++
 6 files changed, 2652 insertions(+)
 create mode 100644 drivers/video/console/Kconfig
 create mode 100644 drivers/video/console/Makefile
 create mode 100644 drivers/video/console/dummycon.c
 create mode 100644 drivers/video/console/newport_con.c
 create mode 100644 drivers/video/console/sticon.c
 create mode 100644 drivers/video/console/vgacon.c

(limited to 'drivers/video/console')

diff --git a/drivers/video/console/Kconfig b/drivers/video/console/Kconfig
new file mode 100644
index 000000000..9f81af350
--- /dev/null
+++ b/drivers/video/console/Kconfig
@@ -0,0 +1,138 @@
+# 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 ALPHA || X86 || \
+		(ARM && ARCH_FOOTBRIDGE) || \
+		(MIPS && (MIPS_MALTA || SIBYTE_BCM112X || SIBYTE_SB1250 || SIBYTE_BCM1x80 || SNI_RM))
+	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 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
+	def_bool VT || VGA_CONSOLE || FRAMEBUFFER_CONSOLE
+
+config DUMMY_CONSOLE_COLUMNS
+	int "Initial number of console screen columns"
+	depends on DUMMY_CONSOLE && !(ARCH_FOOTBRIDGE && VGA_CONSOLE)
+	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 && !(ARCH_FOOTBRIDGE && VGA_CONSOLE)
+	default 64 if PARISC
+	default 30 if ARM
+	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..f10006052
--- /dev/null
+++ b/drivers/video/console/Makefile
@@ -0,0 +1,9 @@
+# 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
diff --git a/drivers/video/console/dummycon.c b/drivers/video/console/dummycon.c
new file mode 100644
index 000000000..7d02470f1
--- /dev/null
+++ b/drivers/video/console/dummycon.c
@@ -0,0 +1,159 @@
+// 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(CONFIG_ARCH_FOOTBRIDGE) && defined(CONFIG_VGA_CONSOLE)
+#include <asm/vga.h>
+#define DUMMY_COLUMNS	vgacon_screen_info.orig_video_cols
+#define DUMMY_ROWS	vgacon_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, u16 c, unsigned int y,
+                          unsigned int x)
+{
+	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 u16 *s, unsigned int count,
+			   unsigned int ypos, unsigned int xpos)
+{
+	unsigned 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 bool dummycon_blank(struct vc_data *vc, enum vesa_blank_mode blank,
+			   bool mode_switch)
+{
+	/* Redraw, so that we get putc(s) for output done while blanked */
+	return true;
+}
+
+static bool dummycon_switch(struct vc_data *vc)
+{
+	/*
+	 * Redraw, so that we get putc(s) for output done while switched
+	 * away. Informs deferred consoles to take over the display.
+	 */
+	return true;
+}
+#else
+static void dummycon_putc(struct vc_data *vc, u16 c, unsigned int y,
+			  unsigned int x) { }
+static void dummycon_putcs(struct vc_data *vc, const u16 *s, unsigned int count,
+			   unsigned int ypos, unsigned int xpos) { }
+static bool dummycon_blank(struct vc_data *vc, enum vesa_blank_mode blank,
+			   bool mode_switch)
+{
+	return false;
+}
+static bool dummycon_switch(struct vc_data *vc)
+{
+	return false;
+}
+#endif
+
+static const char *dummycon_startup(void)
+{
+    return "dummy device";
+}
+
+static void dummycon_init(struct vc_data *vc, bool 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, unsigned int sy, unsigned int sx,
+			   unsigned int width) { }
+static void dummycon_cursor(struct vc_data *vc, bool enable) { }
+
+static bool dummycon_scroll(struct vc_data *vc, unsigned int top,
+			    unsigned int bottom, enum con_scroll dir,
+			    unsigned int lines)
+{
+	return false;
+}
+
+/*
+ *  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/newport_con.c b/drivers/video/console/newport_con.c
new file mode 100644
index 000000000..e88ff3a93
--- /dev/null
+++ b/drivers/video/console/newport_con.c
@@ -0,0 +1,725 @@
+// 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 font_vga_8x16.data
+
+static font_data_t *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_LINUX_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_LINUX_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, bool 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, unsigned int sy, unsigned int sx,
+			  unsigned int width)
+{
+	int xend = ((sx + width) << 3) - 1;
+	int ystart = ((sy << 4) + topscan) & 0x3ff;
+	int yend = (((sy + 1) << 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, u16 charattr, unsigned int ypos,
+			 unsigned int xpos)
+{
+	const unsigned char *p;
+
+	p = &font_data_buf(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 u16 *s,
+			  unsigned int count, unsigned int ypos,
+			  unsigned int xpos)
+{
+	const unsigned char *p;
+	unsigned int i;
+	u16 charattr;
+
+	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_buf(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, bool enable)
+{
+	unsigned short treg;
+	int xcurs, ycurs;
+
+	treg = newport_vc2_get(npregs, VC2_IREG_CONTROL);
+
+	if (!enable) {
+		newport_vc2_set(npregs, VC2_IREG_CONTROL,
+				(treg & ~(VC2_CTRL_ECDISP)));
+		return;
+	}
+
+	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 bool 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 true;
+}
+
+static bool newport_blank(struct vc_data *c, enum vesa_blank_mode blank,
+			  bool mode_switch)
+{
+	unsigned short treg;
+
+	if (blank == VESA_NO_BLANKING) {
+		/* 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 true;
+}
+
+static int newport_set_font(int unit, const struct console_font *op,
+			    unsigned int vpitch)
+{
+	int w = op->width;
+	int h = op->height;
+	int i;
+	font_data_t *new_data;
+
+	/* ladis: when I grow up, there will be a day... and more sizes will
+	 * be supported ;-) */
+	if (w != 8 || h != 16 || (op->charcount != 256 && op->charcount != 512))
+		return -EINVAL;
+
+	new_data = font_data_import(op, vpitch, NULL);
+	if (IS_ERR(new_data))
+		return PTR_ERR(new_data);
+
+	/* check if font is already used by other console */
+	for (i = 0; i < MAX_NR_CONSOLES; i++) {
+		if (font_data_is_equal(font_data[i], new_data)) {
+			font_data_put(new_data);
+			/* current font is the same as the new one */
+			if (i == unit)
+				return 0;
+			new_data = font_data[i];
+			font_data_get(new_data);
+			break;
+		}
+	}
+
+	font_data_put(font_data[unit]);
+	font_data[unit] = new_data;
+
+	return 0;
+}
+
+static int newport_set_def_font(int unit, struct console_font *op)
+{
+	font_data_put(font_data[unit]);
+	font_data[unit] = FONT_DATA;
+	font_data_get(font_data[unit]);
+
+	return 0;
+}
+
+static int newport_font_default(struct vc_data *vc, struct console_font *op,
+				const char *name)
+{
+	return newport_set_def_font(vc->vc_num, op);
+}
+
+static int newport_font_set(struct vc_data *vc, const 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_DESCRIPTION("SGI Newport console driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/video/console/sticon.c b/drivers/video/console/sticon.c
new file mode 100644
index 000000000..6f58e6a9e
--- /dev/null
+++ b/drivers/video/console/sticon.c
@@ -0,0 +1,395 @@
+/*
+ *  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_putcs(struct vc_data *conp, const u16 *s, unsigned int count,
+			 unsigned int ypos, unsigned 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, bool enable)
+{
+    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];
+    if (!enable) {
+	sti_putc(sticon_sti, car1, conp->state.y, conp->state.x,
+		 font_data[conp->vc_num]);
+	return;
+    }
+
+    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;
+    }
+}
+
+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, false);
+
+    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, const 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_obj(*cooked_font);
+	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,
+			       const char *name)
+{
+	sticon_set_def_font(vc->vc_num);
+
+	return 0;
+}
+
+static int sticon_font_set(struct vc_data *vc, const 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, bool 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, unsigned int sy, unsigned int sx,
+			 unsigned int width)
+{
+    sti_clear(sticon_sti, sy, sx, 1, width,
+	      conp->vc_video_erase_char, font_data[conp->vc_num]);
+}
+
+static bool sticon_switch(struct vc_data *conp)
+{
+    return true;	/* needs refreshing */
+}
+
+static bool sticon_blank(struct vc_data *c, enum vesa_blank_mode blank,
+			 bool mode_switch)
+{
+    if (blank == VESA_NO_BLANKING) {
+	if (mode_switch)
+	    vga_is_gfx = 0;
+	return true;
+    }
+    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 true;
+}
+
+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_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_DESCRIPTION("HP STI console driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/video/console/vgacon.c b/drivers/video/console/vgacon.c
new file mode 100644
index 000000000..37bd18730
--- /dev/null
+++ b/drivers/video/console/vgacon.c
@@ -0,0 +1,1226 @@
+/*
+ *  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 bool 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 enum vesa_blank_mode 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 struct screen_info *vga_si;
+
+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)
+{
+	unsigned long scr_end = c->vc_scr_end - vga_vram_base;
+	unsigned long vorigin = c->vc_visible_origin - vga_vram_base;
+	unsigned long origin = c->vc_origin - vga_vram_base;
+	int margin = c->vc_size_row * 4;
+	int from, wrap, from_off, avail;
+
+	/* Turn scrollback off */
+	if (!lines) {
+		c->vc_visible_origin = c->vc_origin;
+		return;
+	}
+
+	/* Do we have already enough to allow jumping from 0 to the end? */
+	if (vga_rolled_over > scr_end + margin) {
+		from = scr_end;
+		wrap = vga_rolled_over + c->vc_size_row;
+	} else {
+		from = 0;
+		wrap = vga_vram_size;
+	}
+
+	from_off = (vorigin - from + wrap) % wrap + lines * c->vc_size_row;
+	avail = (origin - from + wrap) % wrap;
+
+	/* Only a little piece would be left? Show all incl. the piece! */
+	if (avail < 2 * margin)
+		margin = 0;
+	if (from_off < margin)
+		from_off = 0;
+	if (from_off > avail - margin)
+		from_off = avail;
+
+	c->vc_visible_origin = vga_vram_base + (from + from_off) % wrap;
+
+	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 (!vga_si ||
+	    vga_si->orig_video_isVGA == VIDEO_TYPE_VLFB ||
+	    vga_si->orig_video_isVGA == VIDEO_TYPE_EFI) {
+	      no_vga:
+#ifdef CONFIG_DUMMY_CONSOLE
+		conswitchp = &dummy_con;
+		return conswitchp->con_startup();
+#else
+		return NULL;
+#endif
+	}
+
+	/* vga_si reasonably initialized? */
+	if ((vga_si->orig_video_lines == 0) ||
+	    (vga_si->orig_video_cols  == 0))
+		goto no_vga;
+
+	/* VGA16 modes are not handled by VGACON */
+	if ((vga_si->orig_video_mode == 0x0D) ||	/* 320x200/4 */
+	    (vga_si->orig_video_mode == 0x0E) ||	/* 640x200/4 */
+	    (vga_si->orig_video_mode == 0x10) ||	/* 640x350/4 */
+	    (vga_si->orig_video_mode == 0x12) ||	/* 640x480/4 */
+	    (vga_si->orig_video_mode == 0x6A))	/* 800x600/4 (VESA) */
+		goto no_vga;
+
+	vga_video_num_lines = vga_si->orig_video_lines;
+	vga_video_num_columns = vga_si->orig_video_cols;
+	vgastate.vgabase = NULL;
+
+	if (vga_si->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 ((vga_si->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 ((vga_si->orig_video_ega_bx & 0xff) != 0x10) {
+			int i;
+
+			vga_vram_size = 0x8000;
+
+			if (!vga_si->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 = vga_si->orig_video_points;
+		vga_video_font_height = vga_si->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 = vga_si->orig_video_cols * VGA_FONTWIDTH;
+	vgacon_yres = vga_scan_lines;
+
+	return display_desc;
+}
+
+static void vgacon_init(struct vc_data *c, bool 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 is true 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 =
+			!(vga_si->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, bool enable)
+{
+	unsigned int c_height;
+
+	if (c->vc_mode != KD_TEXT)
+		return;
+
+	vgacon_restore_screen(c);
+
+	c_height = c->vc_cell_height;
+
+	write_vga(14, (c->vc_pos - vga_vram_base) / 2);
+
+	if (!enable) {
+	        if (vga_video_type >= VIDEO_TYPE_VGAC)
+			vgacon_set_cursor_size(31, 30);
+		else
+			vgacon_set_cursor_size(31, 31);
+		return;
+	}
+
+	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;
+	}
+}
+
+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 bool vgacon_switch(struct vc_data *c)
+{
+	int x = c->vc_cols * VGA_FONTWIDTH;
+	int y = c->vc_rows * c->vc_cell_height;
+	int rows = vga_si->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 <= vga_si->orig_video_cols &&
+		     vga_video_num_lines <= rows))
+			vgacon_doresize(c, c->vc_cols, c->vc_rows);
+	}
+
+	return false;		/* 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, enum vesa_blank_mode 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 bool vgacon_blank(struct vc_data *c, enum vesa_blank_mode blank,
+			 bool mode_switch)
+{
+	switch (blank) {
+	case VESA_NO_BLANKING:		/* Unblank */
+		if (vga_vesa_blanked) {
+			vga_vesa_unblank(&vgastate);
+			vga_vesa_blanked = VESA_NO_BLANKING;
+		}
+		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 VESA_VSYNC_SUSPEND:	/* Normal blanking */
+		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, true);
+			}
+			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, const 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, bool from_user)
+{
+	if ((width << 1) * height > vga_vram_size)
+		return -EINVAL;
+
+	if (from_user) {
+		/*
+		 * Ho ho!  Someone (svgatextmode, eh?) may have reprogrammed
+		 * the video mode!  Set the new defaults then and go away.
+		 */
+		vga_si->orig_video_cols = width;
+		vga_si->orig_video_lines = height;
+		vga_default_font_height = c->vc_cell_height;
+		return 0;
+	}
+	if (width % 2 || width > vga_si->orig_video_cols ||
+	    height > (vga_si->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 bool 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 false;
+	c->vc_origin = c->vc_visible_origin = vga_vram_base;
+	vga_set_mem_top(c);
+	vga_rolled_over = 0;
+	return true;
+}
+
+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 = vga_si->orig_x;
+		c->state.y = vga_si->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, unsigned int sy, unsigned int sx,
+			 unsigned int width) { }
+static void vgacon_putcs(struct vc_data *vc, const u16 *s, unsigned int count,
+			 unsigned int ypos, unsigned 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_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);
+
+void vgacon_register_screen(struct screen_info *si)
+{
+	if (!si || vga_si)
+		return;
+
+	conswitchp = &vga_con;
+	vga_si = si;
+}
+
+MODULE_DESCRIPTION("VGA based console driver");
+MODULE_LICENSE("GPL");
-- 
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