blob: 98be0127465b9062290347cb4e6e7d46a45cc2f8 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
|
/* SPDX-License-Identifier: GPL-2.0-only */
#include <types.h>
#include <arch/cpu.h>
#include <cpu/x86/msr.h>
#include "model_206ax.h"
/* MSR Documentation based on
* "Sandy Bridge Processor Family BIOS Writer's Guide (BWG)"
* Document Number 504790
* Revision 1.6.0, June 2012 */
void intel_model_206ax_finalize_smm(void)
{
/* Lock AES-NI only if supported */
if (cpuid_ecx(1) & (1 << 25))
msr_set(MSR_FEATURE_CONFIG, BIT(0));
/* Lock TM interrupts - route thermal events to all processors */
msr_set(MSR_MISC_PWR_MGMT, BIT(22));
/* Lock memory configuration to protect SMM */
msr_set(MSR_LT_LOCK_MEMORY, BIT(0));
}
|