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x86: use get_bios_ebda()

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Use get_bios_ebda().

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Akinobu Mita 2008-04-19 23:55:20 +09:00 committed by Ingo Molnar
parent ae5830a6f8
commit 356fa0c6e1
3 changed files with 6 additions and 8 deletions
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5
arch/x86/kernel/head64.c
View file

@ -22,6 +22,7 @@
#include <asm/sections.h>
#include <asm/kdebug.h>
#include <asm/e820.h>
#include <asm/bios_ebda.h>
static void __init zap_identity_mappings(void)
{
@ -49,7 +50,6 @@ static void __init copy_bootdata(char *real_mode_data)
}
}
#define BIOS_EBDA_SEGMENT 0x40E
#define BIOS_LOWMEM_KILOBYTES 0x413
/*
@ -80,8 +80,7 @@ static void __init reserve_ebda_region(void)
lowmem <<= 10;
/* start of EBDA area */
ebda_addr = *(unsigned short *)__va(BIOS_EBDA_SEGMENT);
ebda_addr <<= 4;
ebda_addr = get_bios_ebda();
/* Fixup: bios puts an EBDA in the top 64K segment */
/* of conventional memory, but does not adjust lowmem. */

4
arch/x86/kernel/setup_32.c
View file

@ -389,7 +389,6 @@ unsigned long __init find_max_low_pfn(void)
return max_low_pfn;
}
#define BIOS_EBDA_SEGMENT 0x40E
#define BIOS_LOWMEM_KILOBYTES 0x413
/*
@ -420,8 +419,7 @@ static void __init reserve_ebda_region(void)
lowmem <<= 10;
/* start of EBDA area */
ebda_addr = *(unsigned short *)__va(BIOS_EBDA_SEGMENT);
ebda_addr <<= 4;
ebda_addr = get_bios_ebda();
/* Fixup: bios puts an EBDA in the top 64K segment */
/* of conventional memory, but does not adjust lowmem. */

5
arch/x86/kernel/summit_32.c
View file

@ -29,6 +29,7 @@
#include <linux/mm.h>
#include <linux/init.h>
#include <asm/io.h>
#include <asm/bios_ebda.h>
#include <asm/mach-summit/mach_mpparse.h>
static struct rio_table_hdr *rio_table_hdr __initdata;
@ -140,8 +141,8 @@ void __init setup_summit(void)
int i, next_wpeg, next_bus = 0;
/* The pointer to the EBDA is stored in the word @ phys 0x40E(40:0E) */
ptr = *(unsigned short *)phys_to_virt(0x40Eul);
ptr = (unsigned long)phys_to_virt(ptr << 4);
ptr = get_bios_ebda();
ptr = (unsigned long)phys_to_virt(ptr);
rio_table_hdr = NULL;
offset = 0x180;