x86/setup: Clean up the header portion of setup.c

/*

 *  Copyright (C) 1995  Linus Torvalds

 *

 *  Support of BIGMEM added by Gerhard Wichert, Siemens AG, July 1999

 *

 *  Memory region support

 *	David Parsons <orc@pell.chi.il.us>, July-August 1999

 *

 *  Added E820 sanitization routine (removes overlapping memory regions);

 *  Brian Moyle <bmoyle@mvista.com>, February 2001

 *

 * Moved CPU detection code to cpu/${cpu}.c

 *    Patrick Mochel <mochel@osdl.org>, March 2002

 *

 *  Provisions for empty E820 memory regions (reported by certain BIOSes).

 *  Alex Achenbach <xela@slit.de>, December 2002.

 *

 * This file contains the setup_arch() code, which handles the architecture-dependent

 * parts of early kernel initialization.

 */

/*

 * This file handles the architecture-dependent parts of initialization

 */

#include <linux/sched.h>

#include <linux/mm.h>

#include <linux/mmzone.h>

#include <linux/screen_info.h>

#include <linux/ioport.h>

#include <linux/acpi.h>

#include <linux/sfi.h>

#include <linux/apm_bios.h>

#include <linux/initrd.h>

#include <linux/memblock.h>

#include <linux/seq_file.h>

#include <linux/console.h>

#include <linux/root_dev.h>

#include <linux/highmem.h>

#include <linux/export.h>

#include <linux/crash_dump.h>

#include <linux/dmi.h>

#include <linux/efi.h>

#include <linux/init.h>

#include <linux/edd.h>

#include <linux/init_ohci1394_dma.h>

#include <linux/initrd.h>

#include <linux/iscsi_ibft.h>

#include <linux/nodemask.h>

#include <linux/kexec.h>

#include <linux/dmi.h>

#include <linux/pfn.h>

#include <linux/memblock.h>

#include <linux/pci.h>

#include <asm/pci-direct.h>

#include <linux/init_ohci1394_dma.h>

#include <linux/kvm_para.h>

#include <linux/dma-contiguous.h>

#include <xen/xen.h>

#include <uapi/linux/mount.h>

#include <linux/errno.h>

#include <linux/kernel.h>

#include <linux/stddef.h>

#include <linux/unistd.h>

#include <linux/ptrace.h>

#include <linux/user.h>

#include <linux/delay.h>

#include <linux/kallsyms.h>

#include <linux/cpufreq.h>

#include <linux/dma-mapping.h>

#include <linux/ctype.h>

#include <linux/uaccess.h>

#include <linux/percpu.h>

#include <linux/crash_dump.h>

#include <linux/root_dev.h>

#include <linux/sfi.h>

#include <linux/tboot.h>

#include <linux/jiffies.h>

#include <linux/mem_encrypt.h>

#include <linux/sizes.h>

#include <linux/usb/xhci-dbgp.h>

#include <video/edid.h>

#include <asm/mtrr.h>

#include <uapi/linux/mount.h>

#include <xen/xen.h>

#include <asm/apic.h>

#include <asm/realmode.h>

#include <asm/e820/api.h>

#include <asm/mpspec.h>

#include <asm/setup.h>

#include <asm/efi.h>

#include <asm/timer.h>

#include <asm/i8259.h>

#include <asm/sections.h>

#include <asm/io_apic.h>

#include <asm/ist.h>

#include <asm/setup_arch.h>

#include <asm/bios_ebda.h>

#include <asm/cacheflush.h>

#include <asm/processor.h>

#include <asm/bugs.h>

#include <asm/kasan.h>

#include <asm/vsyscall.h>

#include <asm/cpu.h>

#include <asm/desc.h>

#include <asm/dma.h>

#include <asm/iommu.h>

#include <asm/efi.h>

#include <asm/gart.h>

#include <asm/mmu_context.h>

#include <asm/proto.h>

#include <asm/paravirt.h>

#include <asm/hypervisor.h>

#include <asm/olpc_ofw.h>

#include <asm/percpu.h>

#include <asm/topology.h>

#include <asm/apicdef.h>

#include <asm/amd_nb.h>

#include <asm/io_apic.h>

#include <asm/kasan.h>

#include <asm/kaslr.h>

#include <asm/mce.h>

#include <asm/alternative.h>

#include <asm/mtrr.h>

#include <asm/olpc_ofw.h>

#include <asm/pci-direct.h>

#include <asm/prom.h>

#include <asm/microcode.h>

#include <asm/kaslr.h>

#include <asm/proto.h>

#include <asm/unwind.h>

#include <asm/vsyscall.h>

/*

 * max_low_pfn_mapped: highest direct mapped pfn under 4GB