linux-imx

/*

 *  Copyright 2007-2010 Red Hat, Inc.

 *  by Peter Jones <pjones@redhat.com>

 *  Copyright 2007 IBM, Inc.

 *  by Konrad Rzeszutek <konradr@linux.vnet.ibm.com>

 *  Copyright 2008

 *  by Konrad Rzeszutek <ketuzsezr@darnok.org>

 *

 * This code finds the iSCSI Boot Format Table.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License v2.0 as published by

 * the Free Software Foundation

 *

 * 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.

 */

​

#include <linux/memblock.h>

#include <linux/blkdev.h>

#include <linux/ctype.h>

#include <linux/device.h>

#include <linux/efi.h>

#include <linux/err.h>

#include <linux/init.h>

#include <linux/limits.h>

#include <linux/module.h>

#include <linux/pci.h>

#include <linux/stat.h>

#include <linux/string.h>

#include <linux/types.h>

#include <linux/acpi.h>

#include <linux/iscsi_ibft.h>

​

#include <asm/mmzone.h>

​

/*

 * Physical location of iSCSI Boot Format Table.

 */

struct acpi_table_ibft *ibft_addr;

EXPORT_SYMBOL_GPL(ibft_addr);

​

static const struct {

    char *sign;

} ibft_signs[] = {

    { "iBFT" },

    { "BIFT" }, /* Broadcom iSCSI Offload */

};

​

#define IBFT_SIGN_LEN 4

#define IBFT_START 0x80000 /* 512kB */

#define IBFT_END 0x100000 /* 1MB */

#define VGA_MEM 0xA0000 /* VGA buffer */

#define VGA_SIZE 0x20000 /* 128kB */

​

static int __init find_ibft_in_mem(void)

{

    unsigned long pos;

    unsigned int len = 0;

    void *virt;

    int i;