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x86: Add some definitions for SMM

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U-Boot does not support SMM (System Management Mode) at present, but needs
a few definitions to correctly set up the ACPI table. Add these.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2020-09-22 12:45:05 -06:00 committed by Bin Meng
parent 18d8d241be
commit 59561c7c2e
1 changed files with 27 additions and 0 deletions
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27
arch/x86/include/asm/smm.h Normal file
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/* SPDX-License-Identifier: GPL-2.0 */
/*
* SMM definitions (U-Boot does not support SMM itself)
*
* Copyright (C) 2008-2009 coresystems GmbH
* Copyright 2019 Google LLC
*
* Modified from coreboot smm.h
*/
#ifndef _ASM_SMM_H
#define _ASM_SMM_H
#define APM_CNT 0xb2
#define APM_CNT_CST_CONTROL 0x85
#define APM_CNT_PST_CONTROL 0x80
#define APM_CNT_ACPI_DISABLE 0x1e
#define APM_CNT_ACPI_ENABLE 0xe1
#define APM_CNT_MBI_UPDATE 0xeb
#define APM_CNT_GNVS_UPDATE 0xea
#define APM_CNT_FINALIZE 0xcb
#define APM_CNT_LEGACY 0xcc
#define APM_CNT_SMMSTORE 0xed
#define APM_CNT_ELOG_GSMI 0xef
#define APM_STS 0xb3
#endif /* _ASM_SMM_H */