x86: Remove unused real mode code

This code is pretty old and we want to support only 32-bit systems now.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Graeme Russ <graeme.russ@gmail.com>

1 files changed, 0 insertions, 569 deletions

diff --git a/arch/x86/lib/bios.S b/arch/x86/lib/bios.S
deleted file mode 100644
index 239aaa9cf..000000000
--- a/arch/x86/lib/bios.S
+++ /dev/null
@@ -1,569 +0,0 @@
-/*
- * (C) Copyright 2002
- * Daniel Engström, Omicron Ceti AB, <daniel@omicron.se>
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * 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., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
-
-/*
- * Based on msbios.c from rolo 1.6:
- *----------------------------------------------------------------------
- * (C) Copyright 2000
- * Sysgo Real-Time Solutions GmbH
- * Klein-Winternheim, Germany
- *----------------------------------------------------------------------
- */
-
-#include "bios.h"
-
-/*
- * During it's initialization phase, before switching to protected
- * mode, the Linux Kernel makes a few BIOS calls. This won't work
- * if the board does not have a BIOS.
- *
- * This is a very minimalisic BIOS that supplies just enough
- * functionality to keep the Linux Kernel happy. It is NOT
- * a general purpose replacement for a real BIOS !!
- */
-
-.section .bios, "ax"
-.code16
-.org 0
-	/* a call to f000:0 should warmboot */
-	jmp	realmode_reset
-
-.globl rm_int00
-.hidden rm_int00
-.type rm_int00, @function
-rm_int00:
-	pushw	$0
-	jmp	any_interrupt16
-.globl rm_int01
-.hidden rm_int01
-.type rm_int01, @function
-rm_int01:
-	pushw	$1
-	jmp	any_interrupt16
-.globl rm_int02
-.hidden rm_int02
-.type rm_int02, @function
-rm_int02:
-	pushw	$2
-	jmp	any_interrupt16
-.globl rm_int03
-.hidden rm_int03
-.type rm_int03, @function
-rm_int03:
-	pushw	$3
-	jmp	any_interrupt16
-.globl rm_int04
-.hidden rm_int04
-.type rm_int04, @function
-rm_int04:
-	pushw	$4
-	jmp	any_interrupt16
-.globl rm_int05
-.hidden rm_int05
-.type rm_int05, @function
-rm_int05:
-	pushw	$5
-	jmp	any_interrupt16
-.globl rm_int06
-.hidden rm_int06
-.type rm_int06, @function
-rm_int06:
-	pushw	$6
-	jmp	any_interrupt16
-.globl rm_int07
-.hidden rm_int07
-.type rm_int07, @function
-rm_int07:
-	pushw	$7
-	jmp	any_interrupt16
-.globl rm_int08
-.hidden rm_int08
-.type rm_int08, @function
-rm_int08:
-	pushw	$8
-	jmp	any_interrupt16
-.globl rm_int09
-.hidden rm_int09
-.type rm_int09, @function
-rm_int09:
-	pushw	$9
-	jmp	any_interrupt16
-.globl rm_int0a
-.hidden rm_int0a
-.type rm_int0a, @function
-rm_int0a:
-	pushw	$10
-	jmp	any_interrupt16
-.globl rm_int0b
-.hidden rm_int0b
-.type rm_int0b, @function
-rm_int0b:
-	pushw	$11
-	jmp	any_interrupt16
-.globl rm_int0c
-.hidden rm_int0c
-.type rm_int0c, @function
-rm_int0c:
-	pushw	$12
-	jmp	any_interrupt16
-.globl rm_int0d
-.hidden rm_int0d
-.type rm_int0d, @function
-rm_int0d:
-	pushw	$13
-	jmp	any_interrupt16
-.globl rm_int0e
-.hidden rm_int0e
-.type rm_int0e, @function
-rm_int0e:
-	pushw	$14
-	jmp	any_interrupt16
-.globl rm_int0f
-.hidden rm_int0f
-.type rm_int0f, @function
-rm_int0f:
-	pushw	$15
-	jmp	any_interrupt16
-.globl rm_int10
-.hidden rm_int10
-.type rm_int10, @function
-rm_int10:
-	pushw	$16
-	jmp	any_interrupt16
-.globl rm_int11
-.hidden rm_int11
-.type rm_int11, @function
-rm_int11:
-	pushw	$17
-	jmp	any_interrupt16
-.globl rm_int12
-.hidden rm_int12
-.type rm_int12, @function
-rm_int12:
-	pushw	$18
-	jmp	any_interrupt16
-.globl rm_int13
-.hidden rm_int13
-.type rm_int13, @function
-rm_int13:
-	pushw	$19
-	jmp	any_interrupt16
-.globl rm_int14
-.hidden rm_int14
-.type rm_int14, @function
-rm_int14:
-	pushw	$20
-	jmp	any_interrupt16
-.globl rm_int15
-.hidden rm_int15
-.type rm_int15, @function
-rm_int15:
-	pushw	$21
-	jmp	any_interrupt16
-.globl rm_int16
-.hidden rm_int16
-.type rm_int16, @function
-rm_int16:
-	pushw	$22
-	jmp	any_interrupt16
-.globl rm_int17
-.hidden rm_int17
-.type rm_int17, @function
-rm_int17:
-	pushw	$23
-	jmp	any_interrupt16
-.globl rm_int18
-.hidden rm_int18
-.type rm_int18, @function
-rm_int18:
-	pushw	$24
-	jmp	any_interrupt16
-.globl rm_int19
-.hidden rm_int19
-.type rm_int19, @function
-rm_int19:
-	pushw	$25
-	jmp	any_interrupt16
-.globl rm_int1a
-.hidden rm_int1a
-.type rm_int1a, @function
-rm_int1a:
-	pushw	$26
-	jmp	any_interrupt16
-.globl rm_int1b
-.hidden rm_int1b
-.type rm_int1b, @function
-rm_int1b:
-	pushw	$27
-	jmp	any_interrupt16
-.globl rm_int1c
-.hidden rm_int1c
-.type rm_int1c, @function
-rm_int1c:
-	pushw	$28
-	jmp	any_interrupt16
-.globl rm_int1d
-.hidden rm_int1d
-.type rm_int1d, @function
-rm_int1d:
-	pushw	$29
-	jmp	any_interrupt16
-.globl rm_int1e
-.hidden rm_int1e
-.type rm_int1e, @function
-rm_int1e:
-	pushw	$30
-	jmp	any_interrupt16
-.globl rm_int1f
-.hidden rm_int1f
-.type rm_int1f, @function
-rm_int1f:
-	pushw	$31
-	jmp	any_interrupt16
-.globl rm_def_int
-.hidden rm_def_int
-.type rm_def_int, @function
-rm_def_int:
-	iret
-
-	/*
-	 * All interrupt jumptable entries jump to here after pushing the
-	 * interrupt vector number onto the stack.
-	 */
-any_interrupt16:
-	MAKE_BIOS_STACK
-
-gs	movw	OFFS_VECTOR(%bp), %ax
-	cmpw	$0x10, %ax
-	je	Lint_10h
-	cmpw	$0x11, %ax
-	je	Lint_11h
-	cmpw	$0x12, %ax
-	je	Lint_12h
-	cmpw	$0x13, %ax
-	je	Lint_13h
-	cmpw	$0x15, %ax
-	je	Lint_15h
-	cmpw	$0x16, %ax
-	je	Lint_16h
-	cmpw	$0x1a, %ax
-	je	Lint_1ah
-	movw	$0xffff, %ax
-	jmp	Lout
-Lint_10h:
-	/* VGA BIOS services */
-	call	bios_10h
-	jmp	Lout
-Lint_11h:
-	call	bios_11h
-	jmp	Lout
-Lint_12h:
-	call	bios_12h
-	jmp	Lout
-Lint_13h:
-	/* BIOS disk services */
-	call	bios_13h
-	jmp	Lout
-Lint_15h:
-	/* Misc. BIOS services */
-	call	bios_15h
-	jmp	Lout
-Lint_16h:
-	/* keyboard services */
-	call	bios_16h
-	jmp	Lout
-Lint_1ah:
-	/* PCI bios */
-	call	bios_1ah
-	jmp	Lout
-Lout:
-	cmpw	$0, %ax
-	je	Lhandeled
-
-	/*
-	 * Insert code for unhandeled INTs here.
-	 *
-	 * ROLO prints a message to the console we could do that but then
-	 * we're in 16bit mode so we'll have to get back into 32bit mode
-	 * to use the console I/O routines (if we do this we should make
-	 * int 0x10 and int 0x16 work as well)
-	 */
-Lhandeled:
-	RESTORE_CALLERS_STACK
-
-	/* dump vector number */
-	addw	$2,%sp
-
-	/* return from interrupt */
-	iret
-
-/*
- ************************************************************
- * BIOS	interrupt 10h -- VGA services
- ************************************************************
- */
-bios_10h:
-gs	movw	OFFS_AX(%bp), %ax
-	shrw	$8, %ax
-	cmpw	$0x3, %ax
-	je	Lcur_pos
-	cmpw	$0xf, %ax
-	je	Lvid_state
-	cmpw	$0x12, %ax
-	je	Lvid_cfg
-	movw	$0xffff, %ax
-	ret
-Lcur_pos:
-	/* Read Cursor Position and Size */
-gs	movw	$0, OFFS_CX(%bp)
-gs	movw	$0, OFFS_DX(%bp)
-	xorw	%ax, %ax
-	ret
-Lvid_state:
-	/* Get Video State - 80 columns, 80x25, 16 colors */
-gs	movw	$(80 << 8|0x03), OFFS_AX(%bp)
-gs	movw	$0, OFFS_BX(%bp)
-	xorw	%ax, %ax
-	ret
-Lvid_cfg:
-	/* Video Subsystem Configuration (EGA/VGA) - indicate CGA/MDA/HGA */
-gs	movw	$0x10, OFFS_BX(%bp)
-	xorw	%ax, %ax
-	ret
-
-/*
- ************************************************************
- * BIOS interrupt 11h -- Equipment determination
- ************************************************************
- */
-
-bios_11h:
-cs	movw	bios_equipment, %ax
-gs	movw	%ax, OFFS_AX(%bp)
-	xorw	%ax, %ax
-	ret
-
-/*
- ************************************************************
- * BIOS	interrupt 12h -- Get Memory Size
- ************************************************************
- */
-bios_12h:
-cs	movw	ram_in_64kb_chunks, %ax
-	cmpw	$0xa, %ax
-	ja	b12_more_than_640k
-	shlw	$6, %ax
-	jmp	b12_return
-b12_more_than_640k:
-	movw	$0x280, %ax
-b12_return:
-	/* return number of kilobytes in ax */
-gs	movw	%ax, OFFS_AX(%bp)
-
-gs	movw	OFFS_FLAGS(%bp), %ax
-
-	/* clear carry -- function succeeded */
-	andw	$0xfffe, %ax
-gs	movw	%ax, OFFS_FLAGS(%bp)
-
-	xorw	%ax, %ax
-	ret
-
-/*
- ************************************************************
- * BIOS interrupt 13h -- Disk services
- ************************************************************
- */
-bios_13h:
-gs	movw	OFFS_AX(%bp), %ax
-	shrw	$8, %ax
-	cmpw	$0x15, %ax
-	je	Lfunc_15h
-	movw	$0xffff, %ax
-	ret
-Lfunc_15h:
-gs	movw	OFFS_AX(%bp), %ax
-
-	/* return AH=0->drive not present */
-	andw	$0x00ff, %ax
-gs	movw	%ax, OFFS_AX(%bp)
-	xorw	%ax, %ax
-	ret
-
-/*
- ***********************************************************
- * BIOS interrupt 15h -- Miscellaneous services
- ***********************************************************
- */
-bios_15h:
-gs	movw	OFFS_AX(%bp), %ax
-	shrw	$8, %ax
-	cmpw	$0xc0, %ax
-	je	Lfunc_c0h
-	cmpw	$0xe8, %ax
-	je	Lfunc_e8h
-	cmpw	$0x88, %ax
-	je	Lfunc_88h
-	movw	$0xffff, %ax
-	ret
-
-Lfunc_c0h:
-	/* Return System Configuration Parameters (PS2 only) */
-gs	movw	OFFS_FLAGS(%bp), %ax
-
-	/* return carry -- function not supported */
-	orw	$1, %ax
-gs	movw	%ax, OFFS_FLAGS(%bp)
-	xorw	%ax, %ax
-	ret
-
-Lfunc_e8h:
-gs	movw	OFFS_AX(%bp), %ax
-	andw	$0xff, %ax
-	cmpw	$1, %ax
-	je	Lfunc_e801h
-gs	movw	OFFS_FLAGS(%bp), %ax
-
-	/* return carry -- function not supported */
-	orw	$1, %ax
-gs	movw	%ax, OFFS_FLAGS(%bp)
-	xorw	%ax, %ax
-	ret
-
-Lfunc_e801h:
-	/* Get memory size for >64M Configurations */
-cs	movw	ram_in_64kb_chunks, %ax
-	cmpw	$0x100, %ax
-	ja	e801_more_than_16mb
-
-	/* multiply by 64 */
-	shlw	$6, %ax
-
-	/* 1st meg does not count */
-	subw	$0x400, %ax
-
-	/* return memory size between 1M and 16M in 1kb chunks in AX and CX */
-gs	movw	%ax, OFFS_AX(%bp)
-gs	movw	%ax, OFFS_CX(%bp)
-
-	/* set BX and DX to 0*/
-gs	movw	$0, OFFS_BX(%bp)
-gs	movw	$0, OFFS_DX(%bp)
-gs	movw	OFFS_FLAGS(%bp), %ax
-
-	/* clear carry -- function succeeded */
-	andw	$0xfffe, %ax
-gs	movw	%ax, OFFS_FLAGS(%bp)
-	xorw	%ax, %ax
-	ret
-
-e801_more_than_16mb:
-	/* subtract 16MB */
-	subw	$0x100, %ax
-
-	/* return 0x3c00 (16MB-1MB) in AX and CX */
-gs	movw	$0x3c00, OFFS_AX(%bp)
-gs	movw	$0x3c00, OFFS_CX(%bp)
-
-	/* set BX and DX to number of 64kb chunks above 16MB */
-gs	movw	%ax, OFFS_BX(%bp)
-gs	movw	%ax, OFFS_DX(%bp)
-
-gs	movw	OFFS_FLAGS(%bp), %ax
-
-	/* clear carry -- function succeeded */
-	andw	$0xfffe, %ax
-gs	movw	%ax, OFFS_FLAGS(%bp)
-	xorw	%ax, %ax
-	ret
-
-Lfunc_88h:
-cs	movw	ram_in_64kb_chunks, %ax
-	cmpw	$0x100, %ax
-	jna	b88_not_more_than16
-	movw	$0x100, %ax
-b88_not_more_than16:
-	shlw	$6, %ax
-
-	/* 1st meg does not count */
-	subw	$0x400, %ax
-
-	/* return number of kilobytes between 16MB and 16MB in ax */
-gs	movw	%ax, OFFS_AX(%bp)
-
-gs	movw	OFFS_FLAGS(%bp), %ax
-
-	/* clear carry -- function succeeded */
-	andw	$0xfffe, %ax
-gs	movw	%ax, OFFS_FLAGS(%bp)
-
-	xorw	%ax, %ax
-	ret
-
-/*
- ************************************************************
- * BIOS interrupt 16h -- keyboard services
- ************************************************************
- */
-bios_16h:
-gs	movw	OFFS_AX(%bp), %ax
-	shrw	$8, %ax
-	cmpw	$0x03, %ax
-	je	Lfunc_03h
-	movw	$0xffff, %ax
-	ret
-Lfunc_03h:
-	/* do nothing -- function not supported */
-	xorw	%ax, %ax
-	ret
-
-/*
- ************************************************************
- * BIOS interrupt 1ah -- PCI bios
- ************************************************************
- */
-bios_1ah:
-gs	movw	OFFS_AX(%bp), %ax
-	cmpb	$0xb1, %ah
-	je	Lfunc_b1h
-	movw	$0xffff, %ax
-	ret
-Lfunc_b1h:
-	call	realmode_pci_bios
-
-	/* do nothing -- function not supported */
-	xorw	%ax, %ax
-	ret
-
-
-.globl ram_in_64kb_chunks
-.hidden ram_in_64kb_chunks
-.type ram_in_64kb_chunks, @function
-ram_in_64kb_chunks:
-	.word	0
-
-.globl bios_equipment
-.hidden bios_equipment
-.type bios_equipment, @function
-bios_equipment:
-	.word	0