kernel_optimize_test/arch/x86/kernel/head32.c
Yinghai Lu 6c902b656c x86: Merge early kernel reserve for 32bit and 64bit
They are the same, and we could move them out from head32/64.c to setup.c.

We are using memblock, and it could handle overlapping properly, so
we don't need to reserve some at first to hold the location, and just
need to make sure we reserve them before we are using memblock to find
free mem to use.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Link: http://lkml.kernel.org/r/1359058816-7615-32-git-send-email-yinghai@kernel.org
Cc: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2013-01-29 19:32:58 -08:00

51 lines
1.1 KiB
C

/*
* linux/arch/i386/kernel/head32.c -- prepare to run common code
*
* Copyright (C) 2000 Andrea Arcangeli <andrea@suse.de> SuSE
* Copyright (C) 2007 Eric Biederman <ebiederm@xmission.com>
*/
#include <linux/init.h>
#include <linux/start_kernel.h>
#include <linux/mm.h>
#include <linux/memblock.h>
#include <asm/setup.h>
#include <asm/sections.h>
#include <asm/e820.h>
#include <asm/page.h>
#include <asm/apic.h>
#include <asm/io_apic.h>
#include <asm/bios_ebda.h>
#include <asm/tlbflush.h>
#include <asm/bootparam_utils.h>
static void __init i386_default_early_setup(void)
{
/* Initialize 32bit specific setup functions */
x86_init.resources.reserve_resources = i386_reserve_resources;
x86_init.mpparse.setup_ioapic_ids = setup_ioapic_ids_from_mpc;
reserve_ebda_region();
}
void __init i386_start_kernel(void)
{
sanitize_boot_params(&boot_params);
/* Call the subarch specific early setup function */
switch (boot_params.hdr.hardware_subarch) {
case X86_SUBARCH_MRST:
x86_mrst_early_setup();
break;
case X86_SUBARCH_CE4100:
x86_ce4100_early_setup();
break;
default:
i386_default_early_setup();
break;
}
start_kernel();
}