x86: use CR0 defines.

Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Dave Jones
2008-01-30 13:30:39 +01:00
committed by Ingo Molnar
parent 3578facf73
commit 7ebad70534
5 changed files with 10 additions and 8 deletions

View File

@@ -5,6 +5,7 @@
#include <asm/dma.h>
#include <asm/io.h>
#include <asm/processor-cyrix.h>
#include <asm/processor-flags.h>
#include <asm/timer.h>
#include <asm/pci-direct.h>
#include <asm/tsc.h>
@@ -126,15 +127,12 @@ static void __cpuinit set_cx86_reorder(void)
static void __cpuinit set_cx86_memwb(void)
{
u32 cr0;
printk(KERN_INFO "Enable Memory-Write-back mode on Cyrix/NSC processor.\n");
/* CCR2 bit 2: unlock NW bit */
setCx86(CX86_CCR2, getCx86(CX86_CCR2) & ~0x04);
/* set 'Not Write-through' */
cr0 = 0x20000000;
write_cr0(read_cr0() | cr0);
write_cr0(read_cr0() | X86_CR0_NW);
/* CCR2 bit 2: lock NW bit and set WT1 */
setCx86(CX86_CCR2, getCx86(CX86_CCR2) | 0x14 );
}