drop all duplicate copies of vgabios.c in favor

of devices/oprom/x86.c.

We have some tests on hardware. Moving RAMBASE to
1MB needs to wait a bit until C7 cache_as_ram.inc
has been adapted to cache that area or things will
become incredibly slow (1.5s boot time instead of 0.5)

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>




git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5488 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

5 files changed, 54 insertions, 901 deletions

diff --git a/src/northbridge/via/cn400/Kconfig b/src/northbridge/via/cn400/Kconfig
index 67703c9ebe..8a27af42f2 100644
--- a/src/northbridge/via/cn400/Kconfig
+++ b/src/northbridge/via/cn400/Kconfig
@@ -6,17 +6,6 @@ config FALLBACK_SIZE
 	default 0
 	depends on NORTHBRIDGE_VIA_CN400
 
-# this is done by the northbridge's vgabios.c already
-config VGA_ROM_RUN
-	bool
-	default n
-	depends on NORTHBRIDGE_VIA_CN400
-
-config PCI_ROM_RUN
-	bool
-	default n
-	depends on NORTHBRIDGE_VIA_CN400
-
 # TODO: Values are from the CX700 datasheet, not sure if this matches CN400.
 # TODO: What should be the per-chipset default value here?
 choice
diff --git a/src/northbridge/via/cn400/Makefile.inc b/src/northbridge/via/cn400/Makefile.inc
index 032f4b74e2..89bff39862 100644
--- a/src/northbridge/via/cn400/Makefile.inc
+++ b/src/northbridge/via/cn400/Makefile.inc
@@ -18,8 +18,6 @@
 ## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
 ##
 
-obj-y += vgabios.o
-
 driver-y += northbridge.o
 driver-y += agp.o
 driver-y += vga.o
diff --git a/src/northbridge/via/cn400/vga.c b/src/northbridge/via/cn400/vga.c
index c71431c7c4..01227f6f9a 100644
--- a/src/northbridge/via/cn400/vga.c
+++ b/src/northbridge/via/cn400/vga.c
@@ -33,24 +33,63 @@
 #include <string.h>
 #include <bitops.h>
 #include <cpu/cpu.h>
+#include <arch/interrupt.h>
 #include "chip.h"
 #include "northbridge.h"
 #include "cn400.h"
-#include "vgachip.h"
 
-void write_protect_vgabios(void)
+static int via_cn400_int15_handler(struct eregs *regs)
 {
-	/* Don't bother for now. */
+	int res=-1;
+	printk(BIOS_DEBUG, "via_cn400_int15_handler\n");
+	switch(regs->eax & 0xffff) {
+	case 0x5f19:
+		break;
+	case 0x5f18:
+		regs->eax=0x5f;
+		regs->ebx=0x545; // MCLK = 133, 32M frame buffer, 256 M main memory
+		regs->ecx=0x060;
+		res=0;
+		break;
+	case 0x5f00:
+		regs->eax = 0x8600;
+		break;
+	case 0x5f01:
+		regs->eax = 0x5f;
+		regs->ecx = (regs->ecx & 0xffffff00 ) | 2; // panel type =  2 = 1024 * 768
+		res = 0;
+		break;
+	case 0x5f02:
+		regs->eax=0x5f;
+		regs->ebx= (regs->ebx & 0xffff0000) | 2;
+		regs->ecx= (regs->ecx & 0xffff0000) | 0x401;  // PAL + crt only 
+		regs->edx= (regs->edx & 0xffff0000) | 0;  // TV Layout - default
+		res=0;
+		break;
+	case 0x5f0f:
+		regs->eax=0x860f;
+		break;
+        default:
+		printk(BIOS_DEBUG, "Unknown INT15 function %04x!\n", 
+				regs->eax & 0xffff);
+		break;
+	}
+	return res;
 }
 
 static void vga_init(device_t dev)
 {
 	u8 reg8;
 	u32 temp;
-#ifdef DEBUG_CN400
-	int i, j;
-#endif
 
+	mainboard_interrupt_handlers(0x15, &via_cn400_int15_handler);
+
+#undef OLD_BOCHS_METHOD
+#ifdef OLD_BOCHS_METHOD
+	// XXX We might need more bios hooks in the f segment, but
+	// this way of copying the BOCHS BIOS does not work anymore.
+	// As soon as someone verifies that CN400 can init VGA, the
+	// code should be removed.
 	temp = (0xffffffff - CONFIG_FALLBACK_SIZE - 0xffff);
 	printk(BIOS_DEBUG, "Copying BOCHS BIOS from 0x%08X	to 0xf000\n", temp);
 	/*
@@ -59,7 +98,7 @@ static void vga_init(device_t dev)
 	 */
 	//memcpy(0xf0000, (0xffffffff - CONFIG_ROM_SIZE - 0xffff), 0x10000);
 	memcpy((void *)0xf0000, (void *)temp, 0x10000);
-	printk(BIOS_DEBUG, "Initializing VGA\n");
+#endif
 
 	/* Set memory rate to 200 MHz. */
 	outb(0x3d, CRTM_INDEX);
@@ -79,16 +118,13 @@ static void vga_init(device_t dev)
 	pci_write_config32(dev, 0x10, 0xf0000008);
 	pci_write_config32(dev, 0x14, 0xf4000000);
 
-	printk(BIOS_DEBUG, "INSTALL REAL-MODE IDT\n");
-	setup_realmode_idt();
-	printk(BIOS_DEBUG, "DO THE VGA BIOS\n");
-	do_vgabios();
-	/* VGA seems to work without this, but crash & burn with it. */
-	// printk(BIOS_DEBUG, "Enable VGA console\n");
-	// vga_enable_console();
+	printk(BIOS_DEBUG, "Initializing VGA...\n");
+
+	pci_dev_init(dev);
 
 	/* It's not clear if these need to be programmed before or after
 	 * the VGA BIOS runs. Try both, clean up later. */
+
 	/* Set memory rate to 200 MHz (again). */
 	outb(0x3d, CRTM_INDEX);
 	reg8 = inb(CRTM_DATA);
@@ -102,10 +138,14 @@ static void vga_init(device_t dev)
 	outb(0x39, SR_INDEX);
 	outb(reg8, SR_DATA);
 
+#ifdef OLD_BOCHS_METHOD
 	/* Clear the BOCHS BIOS out of memory, so it doesn't confuse Linux. */
 	memset((void *)0xf0000, 0, 0x10000);
+#endif
 
 #ifdef DEBUG_CN400
+	int i, j;
+
 	printk(BIOS_SPEW, "%s PCI Header Regs::\n", dev_path(dev));
 
 	for (i = 0 ; i < 16; i++)
diff --git a/src/northbridge/via/cn400/vgabios.c b/src/northbridge/via/cn400/vgabios.c
deleted file mode 100644
index 5519b309cd..0000000000
--- a/src/northbridge/via/cn400/vgabios.c
+++ /dev/null
@@ -1,839 +0,0 @@
-#include <console/console.h>
-#include <device/pci.h>
-#include <device/pci_ids.h>
-#include <device/pci_ops.h>
-#undef __KERNEL__
-#include <arch/io.h>
-//#include <printk.h>
-#include <string.h>
-#include "vgachip.h"
-#include <cbfs.h>
-
-/* vgabios.c. Derived from: */
-
-/*------------------------------------------------------------ -*- C -*-
- *  2 Kernel Monte a.k.a. Linux loading Linux on x86
- *
- *  Erik Arjan Hendriks <hendriks@lanl.gov>
- *
- *  This version is a derivative of the original two kernel monte
- *  which is (C) 2000 Scyld.
- *
- *  Copyright (C) 2000 Scyld Computing Corporation
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 2 of the License, or
- *  (at your option) any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Portions related to the alpha architecture are:
- *
- *  Copyright(C) 2001 University of California.  LA-CC Number 01-67.
- *  This software has been authored by an employee or employees of the
- *  University of California, operator of the Los Alamos National
- *  Laboratory under Contract No.  W-7405-ENG-36 with the U.S.
- *  Department of Energy.  The U.S. Government has rights to use,
- *  reproduce, and distribute this software. If the software is
- *  modified to produce derivative works, such modified software should
- *  be clearly marked, so as not to confuse it with the version
- *  available from LANL.
- *
- *  This software may be used and distributed according to the terms
- *  of the GNU General Public License, incorporated herein by
- *  reference to http://www.gnu.org/licenses/gpl.html.
- *
- *  This software is provided by the author(s) "as is" and any express
- *  or implied warranties, including, but not limited to, the implied
- *  warranties of merchantability and fitness for a particular purpose
- *  are disclaimed.  In no event shall the author(s) be liable for any
- *  direct, indirect, incidental, special, exemplary, or consequential
- *  damages (including, but not limited to, procurement of substitute
- *  goods or services; loss of use, data, or profits; or business
- *  interruption) however caused and on any theory of liability,
- *  whether in contract, strict liability, or tort (including
- *  negligence or otherwise) arising in any way out of the use of this
- *  software, even if advised of the possibility of such damage.
- *
- *  $Id: vgabios.c,v 1.5 2004/10/06 17:33:52 rminnich Exp $
- *--------------------------------------------------------------------*/
-
-/* Modified to be a self sufficient plug in so that it can be used 
-   without reliance on other parts of coreboot's core
-   (C) 2005 Nick.Barker9@btinternet.com
-
-  Used initially for epia-m where there are problems getting the bios
-  emulator to successfully run this bios.
-*/
-
-/* Declare a temporary global descriptor table - necessary because the
-   Core part of the bios no longer sets up any 16 bit segments */
-__asm__ (
-	/* pointer to original gdt */
-	"gdtarg:			\n"
-	"	.word	gdt_limit	\n"
-	"	.long	gdt	       	\n"		
-
-	/* compute the table limit */
-	"__mygdt_limit = __mygdt_end - __mygdt - 1	\n"
-
-	"__mygdtaddr:			\n"
-	"	.word	__mygdt_limit  	\n"
-	"	.long	__mygdt	       	\n"
-
-	"__mygdt: 		       	\n"
-	/* selgdt 0, unused */
-	"	.word	0x0000, 0x0000	\n"
-	"	.byte	0x00, 0x00, 0x00, 0x00	\n"
-
-	/* selgdt 8, unused */
-	"	.word	0x0000, 0x0000	       	\n"
-	"	.byte	0x00, 0x00, 0x00, 0x00	\n"
-
-	/* selgdt 0x10, flat code segment */
-	"	.word	0xffff, 0x0000	       	\n"
-	"	.byte	0x00, 0x9b, 0xcf, 0x00	\n"	
-
-	/* selgdt 0x18, flat data segment */
-	"	.word	0xffff, 0x0000	       	\n"
-	"	.byte	0x00, 0x93, 0xcf, 0x00	\n"
-
-	/* selgdt 0x20, unused */
-	"	.word	0x0000, 0x0000	       	\n"
-	"	.byte	0x00, 0x00, 0x00, 0x00	\n"
-
-        /* selgdt 0x28 16-bit 64k code at 0x00000000 */
-	"	.word	0xffff, 0x0000	       	\n"
-	"	.byte	0, 0x9a, 0, 0	       	\n"
-
-	/* selgdt 0x30 16-bit 64k data at 0x00000000 */
-	"	.word	0xffff, 0x0000	       	\n"
-	"	.byte	0, 0x92, 0, 0	       	\n"
-
-	"__mygdt_end:				\n"
-);
-
-/* Declare a pointer to where our idt is going to be i.e. at mem zero */
-__asm__ ("__myidt:		\n"
-	 /* 16-bit limit */
-	 "	.word 1023	\n"
-	 /* 24-bit base */
-	 "	.long 0		\n"
-	 "	.word 0		\n"
-);
-
-/* The address arguments to this function are PHYSICAL ADDRESSES */ 
-static void real_mode_switch_call_vga(unsigned long devfn)
-{
-	__asm__ __volatile__ (
-		// paranoia -- does ecx get saved? not sure. This is 
-		// the easiest safe thing to do.
-		"	pushal			\n"
-		/* save the stack */
-		"	mov 	%esp, __stack	\n"
-		"	jmp 	1f		\n"
-		"__stack: .long 0		\n"
-		"1:\n"
-		/* get devfn into %ecx */
-		"	movl    %esp, %ebp	\n"
-		"	movl    8(%ebp), %ecx	\n"
-		/* load 'our' gdt */
-		"	lgdt	%cs:__mygdtaddr	\n"
-
-		/*  This configures CS properly for real mode. */
-		"	ljmp	$0x28, $__rms_16bit\n"
-		"__rms_16bit:		  	\n"
-		"	.code16			\n"
-		/* 16 bit code from here on... */
-
-		/* Load the segment registers w/ properly configured segment
-		 * descriptors.  They will retain these configurations (limits,
-		 * writability, etc.) once protected mode is turned off. */
-		"	mov	$0x30, %ax	\n"
-		"	mov	%ax, %ds       	\n"
-		"	mov	%ax, %es       	\n"
-		"	mov	%ax, %fs       	\n"
-		"	mov	%ax, %gs       	\n"
-		"	mov	%ax, %ss       	\n"
-
-		/* Turn off protection (bit 0 in CR0) */
-		"	movl	%cr0, %eax	\n"
-		"	andl	$0xFFFFFFFE, %eax \n"
-		"	movl	%eax, %cr0	\n"
-
-		/* Now really going into real mode */
-		"	ljmp	$0,  $__rms_real\n"
-		"__rms_real:			\n"
-
-		/* put the stack at the end of page zero. 
-		 * that way we can easily share it between real and protected, 
-		 * since the 16-bit ESP at segment 0 will work for any case. 
-		/* Setup a stack */
-		"	mov	$0x0, %ax	\n"
-		"	mov	%ax, %ss	\n"
-		"	movl	$0x1000, %eax	\n"
-		"	movl	%eax, %esp	\n"
-
-		/* Load our 16 it idt */
-		"	xor	%ax, %ax	\n"
-		"	mov	%ax, %ds	\n"
-		"	lidt	__myidt		\n"
-
-		/* Dump zeros in the other segregs */
-		"	mov	%ax, %es       	\n"
-		"	mov	%ax, %fs       	\n"
-		"	mov	%ax, %gs       	\n"
-		"	mov	$0x40, %ax	\n"
-		"	mov	%ax, %ds	\n"
-		"	mov	%cx, %ax	\n"
-
-		/* run VGA BIOS at 0xc000:0003 */
-		"	lcall	$0xc000, $0x0003\n"
-
-		/* if we got here, just about done. 
-		 * Need to get back to protected mode */
-		"	movl	%cr0, %eax	\n"
-		"	orl	$0x0000001, %eax\n" /* PE = 1 */
-		"	movl	%eax, %cr0	\n"
-
-		/* Now that we are in protected mode jump to a 32 bit code segment. */
-		"	data32	ljmp	$0x10, $vgarestart\n"
-		"vgarestart:\n"
-		"	.code32\n"
-		"	movw	$0x18, %ax     	\n"
-		"	mov	%ax, %ds       	\n"
-		"	mov	%ax, %es	\n"
-		"	mov	%ax, %fs	\n"
-		"	mov	%ax, %gs	\n"
-		"	mov	%ax, %ss	\n"
-
-		/* restore proper gdt and idt */
-		"	lgdt	%cs:gdtarg	\n"
-		"	lidt	idtarg		\n"
-
-		".globl vga_exit		\n"
-		"vga_exit:			\n"
-		"	mov	__stack, %esp	\n"
-		"	popal			\n"
-		);
-}
-
-__asm__ (".text\n""real_mode_switch_end:\n");
-extern char real_mode_switch_end[];
-
-/* call vga bios int 10 function 0x4f14 to enable main console 
-   epia-m does not always autosence the main console so forcing it on is good !! */ 
-void vga_enable_console()
-{
-	__asm__ __volatile__ (
-		/* paranoia -- does ecx get saved? not sure. This is 
-		 * the easiest safe thing to do. */
-		"	pushal			\n"
-		/* save the stack */
-		"	mov	%esp, __stack	\n"
-
-		/* load 'our' gdt */
-		"	lgdt 	%cs:__mygdtaddr	\n"
-
-		/*  This configures CS properly for real mode. */
-		"	ljmp 	$0x28, $__vga_ec_16bit\n"
-		"__vga_ec_16bit:		\n"
-		"	.code16			\n"
-		/* 16 bit code from here on... */
-
-		/* Load the segment registers w/ properly configured segment
-		 * descriptors.  They will retain these configurations (limits,
-		 * writability, etc.) once protected mode is turned off. */
-		"	mov	$0x30, %ax     	\n"
-		"	mov	%ax, %ds       	\n"
-		"	mov	%ax, %es       	\n"
-		"	mov	%ax, %fs       	\n"
-		"	mov	%ax, %gs       	\n"
-		"	mov	%ax, %ss       	\n"
-
-		/* Turn off protection (bit 0 in CR0) */
-		"	movl	%cr0, %eax     	\n"
-		"	andl	$0xFFFFFFFE, %eax\n"
-		"	movl	%eax, %cr0     	\n"
-
-		/* Now really going into real mode */
-		"	ljmp	$0, $__vga_ec_real \n"
-		"__vga_ec_real:                  \n"
-
-		/* put the stack at the end of page zero. 
-		 * that way we can easily share it between real and protected, 
-		 * since the 16-bit ESP at segment 0 will work for any case. 
-		/* Setup a stack */
-		"	mov	$0x0, %ax	\n"
-		"	mov	%ax, %ss	\n"
-		"	movl	$0x1000, %eax	\n"
-		"	movl	%eax, %esp	\n"
-
-		/* debugging for RGM */
-		"	mov	$0x11, %al	\n"
-		"	outb	%al, $0x80	\n"
-
-		/* Load our 16 it idt */
-		"	xor	%ax, %ax       	\n"
-		"	mov	%ax, %ds	\n"
-		"	lidt	__myidt		\n"
-
-		/* Dump zeros in the other segregs */
-		"	mov	%ax, %ds	\n"
-		"	mov	%ax, %es	\n"
-		"	mov	%ax, %fs	\n"
-		"	mov	%ax, %gs	\n"
-
-		/* ask bios to enable main console */
-		/* set up for int 10 call - values found from X server
-		 * bios call routines */
-		"	movw	$0x4f14,%ax	\n"
-		"	movw	$0x8003,%bx	\n"
-		"	movw	$1, %cx		\n"
-		"	movw	$0, %dx		\n"
-		"	movw	$0, %di		\n"
-		"	int	$0x10		\n"
-
-		"	movb	$0x55, %al	\n"
-		"	outb	%al, $0x80	\n"
-
-		/* if we got here, just about done. 
-		 * Need to get back to protected mode */
-		"	movl	%cr0, %eax	\n"
-		"	orl	$0x0000001, %eax\n" /* PE = 1 */
-		"	movl	%eax, %cr0	\n"
-
-		/* Now that we are in protected mode jump to a 32 bit code segment. */
-		"	data32	ljmp	$0x10, $vga_ec_restart\n"
-		"vga_ec_restart:\n"
-		"	.code32\n"
-		"	movw	$0x18, %ax	\n"
-		"	mov	%ax, %ds	\n"
-		"	mov	%ax, %es	\n"
-		"	mov	%ax, %fs	\n"
-		"	mov	%ax, %gs	\n"
-		"	mov	%ax, %ss	\n"
-
-		/* restore proper gdt and idt */
-		"	lgdt	%cs:gdtarg 	\n"
-		"	lidt	idtarg		\n"
-		"	.globl	vga__ec_exit	\n"
-		"vga_ec_exit:\n"
-		"	mov	__stack, %esp	\n"
-		"	popal\n"
-		);
-}
-
-void do_vgabios(void)
-{
-	device_t dev;
-	unsigned long busdevfn;
-	u32 rom;
-	unsigned char *buf;
-	unsigned int size = 64*1024;
-	int i;
-	
-	/* clear vga bios data area */
-	for (i = 0x400; i < 0x500; i++) {
-		*(unsigned char *) i = 0;
-	}
-
-	dev = dev_find_class(PCI_CLASS_DISPLAY_VGA<<8 , 0);
-
-	if (!dev) {
-		printk(BIOS_DEBUG, "NO VGA FOUND\n");
-		return;
-	}
-	printk(BIOS_DEBUG, "found VGA: vid=%x, did=%x\n", dev->vendor, dev->device);
-
-	/* declare rom address here - keep any config data out of the way
-	 * of core LXB stuff */
-
-        rom = (u32)cbfs_load_optionrom(dev->vendor, dev->device, 0);
-	pci_write_config32(dev, PCI_ROM_ADDRESS, rom|1);
-	printk(BIOS_DEBUG, "VGA BIOS ROM base address: %x\n", rom);
-
-	buf = (unsigned char *) rom;
-	if ((buf[0] == 0x55) && (buf[1] == 0xaa)) {
-		memcpy((void *) 0xc0000, buf, size);
-
-		write_protect_vgabios();  // in northbridge
-
-	  	// check signature again
-		buf = (unsigned char *) 0xc0000;
-		if (buf[0]==0x55 && buf[1]==0xAA) {
-			busdevfn = (dev->bus->secondary << 8) | dev->path.pci.devfn;
-			printk(BIOS_DEBUG, "bus/devfn = %#lx\n", busdevfn);
-
-		    	real_mode_switch_call_vga(busdevfn);
-		} else
-			printk(BIOS_DEBUG, "Failed to copy VGA BIOS to 0xc0000\n");
-	} else 
-		printk(BIOS_DEBUG, "BAD SIGNATURE 0x%x 0x%x\n", buf[0], buf[1]);
-
-	pci_write_config32(dev, PCI_ROM_ADDRESS, 0);
-}
-
-
-// we had hoped to avoid this. 
-// this is a stub IDT only. It's main purpose is to ignore calls 
-// to the BIOS. 
-// no longer. Dammit. We have to respond to these.
-struct realidt {
-	unsigned short offset, cs;
-}; 
-
-// from a handy writeup that andrey found.
-
-// handler. 
-// There are some assumptions we can make here. 
-// First, the Top Of Stack (TOS) is located on the top of page zero. 
-// we can share this stack between real and protected mode. 
-// that simplifies a lot of things ...
-// we'll just push all the registers on the stack as longwords, 
-// and pop to protected mode. 
-// second, since this only ever runs as part of coreboot, 
-// we know all the segment register values -- so we don't save any.
-// keep the handler that calls things small. It can do a call to 
-// more complex code in coreboot itself. This helps a lot as we don't
-// have to do address fixup in this little stub, and calls are absolute
-// so the handler is relocatable.
-void handler(void)
-{
-	__asm__ __volatile__ ( 
-		"	.code16		\n"
-		"idthandle:		\n"
-		"	pushal		\n"
-		"	movb 	$0, %al	\n"
-		"	ljmp 	$0, $callbiosint16\n"
-		"end_idthandle:		\n"
-		"	.code32		\n"
-		);
-}
-
-void debughandler(void)
-{
-	__asm__ __volatile__ ( 
-		"	.code16		\n"
-		"debughandle:		\n"
-		"	pushw	%cx	\n"
-		"	movw	$250, %cx \n"
-		"dbh1:			\n"
-		"	loop	dbh1	\n"
-		"	popw	%cx	\n"
-		"	iret		\n"
-		"end_debughandle:	\n"
-		".code32		\n"
-		);
-}
-
-// Calling conventions. The first C function is called with this stuff
-// on the stack. They look like value parameters, but note that if you
-// modify them they will go back to the INTx function modified. 
-// the C function will call the biosint function with these as
-// REFERENCE parameters. In this way, we can easily get 
-// returns back to the INTx caller (i.e. vgabios)
-void callbiosint(void)
-{
-	__asm__ __volatile__ (
-		"	.code16		\n"
-		"callbiosint16:		\n"
-		"	push	%ds	\n"
-		"	push	%es	\n"
-		"	push	%fs	\n"
-		"	push	%gs	\n"
-		// clean up the int #. To save space we put it in the lower
-		// byte. But the top 24 bits are junk. 
-		"	andl	$0xff, %eax\n"
-		// this push does two things:
-		// - put the INT # on the stack as a parameter
-		// - provides us with a temp for the %cr0 mods.
-		"	pushl	%eax	\n"
-		"	movl    %cr0, %eax\n"
-		"	orl	$0x00000001, %eax\n" /* PE = 1 */
-		"	movl	%eax, %cr0\n"
-		/* Now that we are in protected mode jump to a 32 bit code segment. */
-		"	data32  ljmp    $0x10, $biosprotect\n"
-		"biosprotect:		\n"
-		"	.code32		\n"
-		"	movw	$0x18, %ax          \n"
-		"	mov	%ax, %ds          \n"
-		"	mov	%ax, %es          \n"
-		"	mov	%ax, %fs          \n"
-		"	mov	%ax, %gs          \n"
-		"	mov	%ax, %ss          \n"
-		"	lidt	idtarg         \n"
-		"	call	biosint	\n"
-		// back to real mode ...
-		"	ljmp	$0x28, $__rms_16bit2\n"
-		"__rms_16bit2:			\n"
-		"	.code16			\n"
-		/* 16 bit code from here on... */
-		/* Load the segment registers w/ properly configured segment
-		 * descriptors.  They will retain these configurations (limits,
-		 * writability, etc.) once protected mode is turned off. */
-		"	mov	$0x30, %ax	\n"
-		"	mov	%ax, %ds	\n"
-		"	mov	%ax, %es	\n"
-		"	mov	%ax, %fs	\n"
-		"	mov	%ax, %gs	\n"
-		"	mov	%ax, %ss	\n"
-		
-		/* Turn off protection (bit 0 in CR0) */
-		"	movl	%cr0, %eax		\n"
-		"	andl	$0xFFFFFFFE, %eax	\n"
-		"	movl	%eax, %cr0		\n"
-
-		/* Now really going into real mode */
-		"	ljmp $0,  $__rms_real2	\n"
-		"__rms_real2:			\n"
-
-		/* Setup a stack
-		 * FixME: where is esp? */
-		"	mov	$0x0, %ax       \n"
-		"	mov	%ax, %ss	\n"
-
-		/* ebugging for RGM */
-		"	mov	$0x11, %al	\n"
-		"	outb	%al, $0x80	\n"
-
-		/* Load our 16 it idt */
-		"	xor	%ax, %ax	\n"
-		"	mov	%ax, %ds	\n"
-		"	lidt	__myidt		\n"
-
-		/* Dump zeros in the other segregs */
-		"	mov	%ax, %es	\n"
-		"	mov	%ax, %fs	\n"
-		"	mov	%ax, %gs	\n"
-		"	mov	$0x40, %ax	\n"
-		"	mov	%ax, %ds	\n"
-
-		/* pop the INT # that you pushed earlier */
-		"	popl	%eax		\n"
-		"	pop	%gs		\n"
-		"	pop	%fs		\n"
-		"	pop	%es		\n"
-		"	pop	%ds		\n"
-		"	popal			\n"
-		"	iret			\n"
-		"	.code32			\n"
-		);
-}
-
-enum {
-	PCIBIOS = 0x1a, 
-	MEMSIZE = 0x12
-};
-
-int pcibios(unsigned long *pedi, unsigned long *pesi, unsigned long *pebp,
-	    unsigned long *pesp, unsigned long *pebx, unsigned long *pedx,
-	    unsigned long *pecx, unsigned long *peax, unsigned long *pflags);
-
-int handleint21(unsigned long *pedi, unsigned long *pesi, unsigned long *pebp,
-		unsigned long *pesp, unsigned long *pebx, unsigned long *pedx,
-		unsigned long *pecx, unsigned long *peax, unsigned long *pflags
-        );
-
-extern void vga_exit(void);
-
-int biosint(unsigned long intnumber,
-	    unsigned long gsfs, unsigned long dses,
-	    unsigned long edi, unsigned long esi,
-	    unsigned long ebp, unsigned long esp, 
-	    unsigned long ebx, unsigned long edx, 
-	    unsigned long ecx, unsigned long eax, 
-	    unsigned long cs_ip, unsigned short stackflags)
-{
-	unsigned long ip; 
-	unsigned long cs; 
-	unsigned long flags;
-	int ret = -1;
-	
-	ip = cs_ip & 0xffff;
-	cs = cs_ip >> 16;
-	flags = stackflags;
-	
-	printk(BIOS_DEBUG, "biosint: INT# 0x%lx\n", intnumber);
-	printk(BIOS_DEBUG, "biosint: eax 0x%lx ebx 0x%lx ecx 0x%lx edx 0x%lx\n", 
-		      eax, ebx, ecx, edx);
-	printk(BIOS_DEBUG, "biosint: ebp 0x%lx esp 0x%lx edi 0x%lx esi 0x%lx\n",
-		     ebp, esp, edi, esi);
-	printk(BIOS_DEBUG, "biosint:  ip 0x%lx   cs 0x%lx  flags 0x%lx\n",
-		     ip, cs, flags);
-
-	// cases in a good compiler are just as good as your own tables. 
-	switch (intnumber) {
-	case 0 ... 15:
-		// These are not BIOS service, but the CPU-generated exceptions
-		printk(BIOS_INFO, "biosint: Oops, exception %lu\n", intnumber);
-		if (esp < 0x1000) {
-			printk(BIOS_DEBUG, "Stack contents: ");
-			while (esp < 0x1000) {
-				printk(BIOS_DEBUG, "0x%04x ", *(unsigned short *) esp);
-				esp += 2;
-			}
-			printk(BIOS_DEBUG, "\n");
-		}
-		printk(BIOS_DEBUG, "biosint: Bailing out\n");
-		// "longjmp"
-		vga_exit();
-		break;
-		
-	case PCIBIOS:
-		ret = pcibios( &edi, &esi, &ebp, &esp, 
-			       &ebx, &edx, &ecx, &eax, &flags);
-		break;
-	case MEMSIZE: 
-		// who cares. 
-		eax = 64 * 1024;
-		ret = 0;
-		break;
-	case 0x15:
-		ret=handleint21( &edi, &esi, &ebp, &esp, 
-				&ebx, &edx, &ecx, &eax, &flags);
-		break;
-	default:
-		printk(BIOS_INFO, "BIOSINT: Unsupport int #0x%lx\n", intnumber);
-		break;
-	}
-	if (ret)
-		flags |= 1; // carry flags
-	else
-		flags &= ~1;
-	stackflags = flags;
-	return ret;
-} 
-
-
-void setup_realmode_idt(void) 
-{
-	extern unsigned char idthandle, end_idthandle;
-	extern unsigned char debughandle, end_debughandle;
-
-	int i;
-	struct realidt *idts = (struct realidt *) 0;
-	int codesize = &end_idthandle - &idthandle;
-	unsigned char *intbyte, *codeptr;
-	
-	// for each int, we create a customized little handler
-	// that just pushes %ax, puts the int # in %al, 
-	// then calls the common interrupt handler. 
-	// this necessitated because intel didn't know much about 
-	// architecture when they did the 8086 (it shows)
-	// (hmm do they know anymore even now :-)
-	// obviously you can see I don't really care about memory 
-	// efficiency. If I did I would probe back through the stack
-	// and get it that way. But that's really disgusting.
-	for (i = 0; i < 256; i++) {
-		idts[i].cs = 0;
-		codeptr = (char*) 4096 + i * codesize;
-		idts[i].offset = (unsigned) codeptr;
-		memcpy(codeptr, &idthandle, codesize);
-		intbyte = codeptr + 3;
-		*intbyte = i;
-	}
-	
-	// fixed entry points
-	
-	// VGA BIOSes tend to hardcode f000:f065 as the previous handler of
-	// int10. 
-	// calling convention here is the same as INTs, we can reuse
-	// the int entry code.
-	codeptr = (char*) 0xff065;
-	memcpy(codeptr, &idthandle, codesize);
-	intbyte = codeptr + 3;
-	*intbyte = 0x42; /* int42 is the relocated int10 */
-
-	/* debug handler - useful to set a programmable delay between instructions if the
-	   TF bit is set upon call to real mode */
-	idts[1].cs = 0;
-	idts[1].offset = 16384;
-	memcpy(16384, &debughandle, &end_debughandle - &debughandle);
-
-	
-}
-
-
-
-enum {
-	CHECK = 0xb001,
-	FINDDEV = 0xb102,
-	READCONFBYTE = 0xb108,
-	READCONFWORD = 0xb109,
-	READCONFDWORD = 0xb10a,
-	WRITECONFBYTE = 0xb10b,
-	WRITECONFWORD = 0xb10c,
-	WRITECONFDWORD = 0xb10d
-};
-
-// errors go in AH. Just set these up so that word assigns
-// will work. KISS. 
-enum {
-	PCIBIOS_NODEV = 0x8600,
-	PCIBIOS_BADREG = 0x8700
-};
-
-int
-pcibios(unsigned long *pedi, unsigned long *pesi, unsigned long *pebp, 
-	unsigned long *pesp, unsigned long *pebx, unsigned long *pedx, 
-	unsigned long *pecx, unsigned long *peax, unsigned long *pflags)
-{
-	unsigned long edi = *pedi;
-	unsigned long esi = *pesi;
-	unsigned long ebp = *pebp;
-	unsigned long esp = *pesp;
-	unsigned long ebx = *pebx;
-	unsigned long edx = *pedx;
-	unsigned long ecx = *pecx;
-	unsigned long eax = *peax;
-	unsigned long flags = *pflags;
-	unsigned short func = (unsigned short) eax;
-	int retval = 0;
-	unsigned short devid, vendorid, devfn;
-	short devindex; /* Use short to get rid of garbage in upper half of 32-bit register */
-	unsigned char bus;
-	device_t dev;
-	
-	switch(func) {
-	case  CHECK:
-		*pedx = 0x4350;
-		*pecx = 0x2049;
-		retval = 0;
-		break;
-	case FINDDEV:
-	{
-		devid = *pecx;
-		vendorid = *pedx;
-		devindex = *pesi;
-		dev = 0;
-		while ((dev = dev_find_device(vendorid, devid, dev))) {
-			if (devindex <= 0)
-				break;
-			devindex--;
-		}
-		if (dev) {
-			unsigned short busdevfn;
-			*peax = 0;
-			// busnum is an unsigned char;
-			// devfn is an int, so we mask it off. 
-			busdevfn = (dev->bus->secondary << 8)
-				| (dev->path.pci.devfn & 0xff);
-			printk(BIOS_DEBUG, "0x%x: return 0x%x\n", func, busdevfn);
-			*pebx = busdevfn;
-			retval = 0;
-		} else {
-			*peax = PCIBIOS_NODEV;
-			retval = -1;
-		}
-	}
-	break;
-	case READCONFDWORD:
-	case READCONFWORD:
-	case READCONFBYTE:
-	case WRITECONFDWORD:
-	case WRITECONFWORD:
-	case WRITECONFBYTE:
-	{
-		unsigned long dword;
-		unsigned short word;
-		unsigned char byte;
-		unsigned char reg;
-		
-		devfn = *pebx & 0xff;
-		bus = *pebx >> 8;
-		reg = *pedi;
-		dev = dev_find_slot(bus, devfn);
-		if (! dev) {
-			printk(BIOS_DEBUG, "0x%x: BAD DEVICE bus %d devfn 0x%x\n", func, bus, devfn);
-			// idiots. the pcibios guys assumed you'd never pass a bad bus/devfn!
-			*peax = PCIBIOS_BADREG;
-			retval = -1;
-		}
-		switch(func) {
-		case READCONFBYTE:
-			byte = pci_read_config8(dev, reg);
-			*pecx = byte;
-			break;
-		case READCONFWORD:
-			word = pci_read_config16(dev, reg);
-			*pecx = word;
-			break;
-		case READCONFDWORD:
-			dword = pci_read_config32(dev, reg);
-			*pecx = dword;
-			break;
-		case WRITECONFBYTE:
-			byte = *pecx;
-			pci_write_config8(dev, reg, byte);
-			break;
-		case WRITECONFWORD:
-			word = *pecx;
-			pci_write_config16(dev, reg, word);
-			break;
-		case WRITECONFDWORD:
-			dword = *pecx;
-			pci_write_config32(dev, reg, dword);
-			break;
-		}
-		
-		if (retval) 
-			retval = PCIBIOS_BADREG;
-		printk(BIOS_DEBUG, "0x%x: bus %d devfn 0x%x reg 0x%x val 0x%lx\n",
-			     func, bus, devfn, reg, *pecx);
-		*peax = 0;
-		retval = 0;
-	}
-	break;
-	default:
-		printk(BIOS_ERR, "UNSUPPORTED PCIBIOS FUNCTION 0x%x\n",  func);
-		break;
-	}
-	
-	return retval;
-} 
-
-int handleint21(unsigned long *edi, unsigned long *esi, unsigned long *ebp,
-		unsigned long *esp, unsigned long *ebx, unsigned long *edx,
-		unsigned long *ecx, unsigned long *eax, unsigned long *flags)
-{
-	int res=-1;
-	switch(*eax&0xffff)
-	{
-	case 0x5f19:
-		break;
-	case 0x5f18:
-		*eax=0x5f;
-		*ebx=0x545; // MCLK = 133, 32M frame buffer, 256 M main memory
-		*ecx=0x060;
-		res=0;
-		break;
-	case 0x5f00:
-		*eax = 0x8600;
-		break;
-	case 0x5f01:
-		*eax = 0x5f;
-		*ecx = (*ecx & 0xffffff00 ) | 2; // panel type =  2 = 1024 * 768
-		res = 0;
-		break;
-	case 0x5f02:
-		*eax=0x5f;
-		*ebx= (*ebx & 0xffff0000) | 2;
-		*ecx= (*ecx & 0xffff0000) | 0x401;  // PAL + crt only 
-		*edx= (*edx & 0xffff0000) | 0;  // TV Layout - default
-		res=0;
-		break;
-	case 0x5f0f:
-		*eax=0x860f;
-		break;
-	}
-	return res;
-}
diff --git a/src/northbridge/via/cn400/vgachip.h b/src/northbridge/via/cn400/vgachip.h
deleted file mode 100644
index 038ffec3ec..0000000000
--- a/src/northbridge/via/cn400/vgachip.h
+++ /dev/null
@@ -1,35 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright (C) 2007 Corey Osgood <corey.osgood@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
- */
-
-#ifndef _PC80_VGABIOS
-#define _PC80_VGABIOS
-
-extern struct chip_control pc80_vgabios_control;
-
-struct pc80_vgabios_config {
-	int nothing;
-};
-
-void vga_enable_console(void);
-void do_vgabios(void);
-void setup_realmode_idt(void);
-void write_protect_vgabios(void);
-
-#endif /* _PC80_VGABIOS */