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x86: quark: Introduce ACPI global NVS

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This introduces quark-specific ACPI global NVS structure, defined in
both C header file and ASL file.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Bin Meng 2016-06-17 02:13:15 -07:00
parent 2047390abc
commit cf7108b320
3 changed files with 41 additions and 0 deletions
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7
arch/x86/cpu/quark/acpi.c
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@ -9,6 +9,7 @@
#include <asm/ioapic.h>
#include <asm/mpspec.h>
#include <asm/tables.h>
#include <asm/arch/global_nvs.h>
#include <asm/arch/iomap.h>
void acpi_create_fadt(struct acpi_fadt *fadt, struct acpi_facs *facs,
@ -161,3 +162,9 @@ u32 acpi_fill_madt(u32 current)
return current;
}
void acpi_create_gnvs(struct acpi_global_nvs *gnvs)
{
/* quark is a uni-processor */
gnvs->pcnt = 1;
}

14
arch/x86/include/asm/arch-quark/acpi/global_nvs.asl Normal file
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@ -0,0 +1,14 @@
/*
* Copyright (C) 2016 Bin Meng <bmeng.cn@gmail.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <asm/acpi/global_nvs.h>
OperationRegion(GNVS, SystemMemory, ACPI_GNVS_ADDR, ACPI_GNVS_SIZE)
Field(GNVS, ByteAcc, NoLock, Preserve)
{
Offset (0x00),
PCNT, 8, /* processor count */
}

20
arch/x86/include/asm/arch-quark/global_nvs.h Normal file
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@ -0,0 +1,20 @@
/*
* Copyright (C) 2016, Bin Meng <bmeng.cn@gmail.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef _GLOBAL_NVS_H_
#define _GLOBAL_NVS_H_
struct __packed acpi_global_nvs {
u8 pcnt; /* processor count */
/*
* Add padding so sizeof(struct acpi_global_nvs) == 0x100.
* This must match the size defined in the global_nvs.asl.
*/
u8 rsvd[255];
};
#endif /* _GLOBAL_NVS_H_ */