// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 1995 Linus Torvalds
*
* This file contains the setup_arch() code, which handles the architecture-dependent
* parts of early kernel initialization.
*/
#include <linux/console.h>
#include <linux/crash_dump.h>
#include <linux/dmi.h>
#include <linux/efi.h>
#include <linux/init_ohci1394_dma.h>
#include <linux/initrd.h>
#include <linux/iscsi_ibft.h>
#include <linux/memblock.h>
#include <linux/pci.h>
#include <linux/root_dev.h>
#include <linux/sfi.h>
#include <linux/hugetlb.h>
#include <linux/tboot.h>
#include <linux/usb/xhci-dbgp.h>
#include <uapi/linux/mount.h>
#include <xen/xen.h>
#include <asm/apic.h>
#include <asm/numa.h>
#include <asm/bios_ebda.h>
#include <asm/bugs.h>
#include <asm/cpu.h>
#include <asm/efi.h>
#include <asm/gart.h>
#include <asm/hypervisor.h>
#include <asm/io_apic.h>
#include <asm/kasan.h>
#include <asm/kaslr.h>
#include <asm/mce.h>
#include <asm/mtrr.h>
#include <asm/realmode.h>
#include <asm/olpc_ofw.h>
#include <asm/pci-direct.h>
#include <asm/prom.h>
#include <asm/proto.h>
#include <asm/unwind.h>
#include <asm/vsyscall.h>
#include <linux/vmalloc.h>
/*
* max_low_pfn_mapped: highest directly mapped pfn < 4 GB
* max_pfn_mapped: highest directly mapped pfn > 4 GB
*
* The direct mapping only covers E820_TYPE_RAM regions, so the ranges and gaps are
* represented by pfn_mapped[].
*/
unsigned long max_low_pfn_mapped;
unsigned long max_pfn_mapped;
#ifdef CONFIG_DMI
RESERVE_BRK(dmi_alloc, 65536);
#endif
/*
* Range of the BSS area. The size of the BSS area is determined
* at link time, with RESERVE_BRK*() facility reserving additional
* chunks.
*/
unsigned long _brk_start = (unsigned long)__brk_base;
unsigned long _brk_end = (unsigned long)__brk_base;
struct boot_params boot_params;
/*
* These are the four main kernel memory regions, we put them into
* the resource tree so that kdump tools and other debugging tools
* recover it:
*/
static struct resource rodata_resource = {
.name = "Kernel rodata",
.start = 0,
.end = 0,
.flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM
};
static struct resource data_resource = {
.name = "Kernel data",
.start = 0,
.end = 0,
.flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM
};
static struct resource code_resource = {
.name = "Kernel code",
.start = 0,
.end = 0,
.flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM
};
static struct resource bss_resource = {
.name = "Kernel bss",
.start = 0,
.end = 0,
.flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM
};
#ifdef CONFIG_X86_32
/* CPU data as detected by the assembly code in head_32.S */
struct cpuinfo_x86 new_cpu_data;
/* Common CPU data for all CPUs */
struct cpuinfo_x86 boot_cpu_data __read_mostly;
EXPORT_SYMBOL(boot_cpu_data);
unsigned int