Voyager support for the new x86 setup code

/* -*- linux-c -*- ------------------------------------------------------- *

 *

 *   Copyright (C) 1991, 1992 Linus Torvalds

 *   Copyright 2007 rPath, Inc. - All Rights Reserved

 *

 *   This file is part of the Linux kernel, and is made available under

 *   the terms of the GNU General Public License version 2.

 *

 * ----------------------------------------------------------------------- */

/*

 * arch/i386/boot/voyager.c

 *

 * Get the Voyager config information

 */

#include "boot.h"

#ifdef CONFIG_X86_VOYAGER

int query_voyager(void)

{

	u8 err;

	u16 es, di;

	/* Abuse the apm_bios_info area for this */

	u8 *data_ptr = (u8 *)&boot_params.apm_bios_info;

	data_ptr[0] = 0xff;	/* Flag on config not found(?) */

	asm("pushw %%es ; "

	    "int $0x15 ; "

	    "setc %0 ; "

	    "movw %%es, %1 ; "

	    "popw %%es"

	    : "=qm" (err), "=rm" (es), "=D" (di)

	    : "a" (0xffc0));

	if (err)

		return -1;	/* Not Voyager */

	set_fs(es);

	copy_from_fs(data_ptr, di, 7);	/* Table is 7 bytes apparently */

	return 0;

}

#endif /* CONFIG_X86_VOYAGER */