x86: use get_bios_ebda()

Use get_bios_ebda().

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c
index 993c767..d31d6b7 100644 (file)
--- a/arch/x86/kernel/head64.c
+++ b/arch/x86/kernel/head64.c
@@ -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. */

diff --git a/arch/x86/kernel/setup_32.c b/arch/x86/kernel/setup_32.c
index 455d3c8..44cc9b9 100644 (file)
--- a/arch/x86/kernel/setup_32.c
+++ b/arch/x86/kernel/setup_32.c
@@ -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. */

diff --git a/arch/x86/kernel/summit_32.c b/arch/x86/kernel/summit_32.c
index 6878a9c..ae75109 100644 (file)
--- a/arch/x86/kernel/summit_32.c
+++ b/arch/x86/kernel/summit_32.c
@@ -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;