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x86: use BIT() macros for cr0/cr4 bits

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Easier to establish correspondence with the technical
manuals.

Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
This commit is contained in:
Andrew Boie 2019-11-12 15:50:49 -08:00 • committed by Anas Nashif
commit 3256e9e00b
1 changed files with 5 additions and 4 deletions
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9
arch/x86/include/kernel_arch_data.h
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@ -48,10 +48,11 @@
* Control register definitions.
*/
#define CR0_PG 0x80000000 /* enable paging */
#define CR0_WP 0x00010000 /* honor W bit even when supervisor */
#define CR4_PAE 0x00000020 /* enable PAE */
#define CR4_OSFXSR 0x00000200 /* enable SSE (OS FXSAVE/RSTOR) */
#define CR0_PG BIT(31) /* enable paging */
#define CR0_WP BIT(16) /* honor W bit even when supervisor */
#define CR4_PAE BIT(5) /* enable PAE */
#define CR4_OSFXSR BIT(9) /* enable SSE (OS FXSAVE/RSTOR) */
#ifdef CONFIG_X86_64
#include <intel64/kernel_arch_data.h>