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SFI: add capability to parse ACPI tables

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Extend SFI to access standard ACPI tables.
(eg. the PCI MCFG) using sfi_acpi_table_parse().

Note that this is _not_ a hybrid ACPI + SFI mode.
The platform boots in either ACPI mode or SFI mode.

SFI runs only with acpi_disabled=1, which can be set
at build-time via CONFIG_ACPI=n, or at boot time by
the failure to find ACPI platform support.

So this extension simply allows SFI-platforms to
re-use existing standard table formats that happen to
be defined to live in ACPI envelopes.

Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Feng Tang 2009-08-14 15:17:53 -04:00 • committed by Len Brown
parent 6ae6996a46
commit 13e82d023c
2 changed files with 268 additions and 0 deletions
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93
include/linux/sfi_acpi.h Normal file
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/* sfi.h Simple Firmware Interface */
/*
This file is provided under a dual BSD/GPLv2 license. When using or
redistributing this file, you may do so under either license.
GPL LICENSE SUMMARY
Copyright(c) 2009 Intel Corporation. All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the terms of version 2 of the GNU General Public License as
published by the Free Software Foundation.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
The full GNU General Public License is included in this distribution
in the file called LICENSE.GPL.
BSD LICENSE
Copyright(c) 2009 Intel Corporation. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
* Neither the name of Intel Corporation nor the names of its
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _LINUX_SFI_ACPI_H
#define _LINUX_SFI_ACPI_H
#ifdef CONFIG_SFI
#include <acpi/acpi.h> /* struct acpi_table_header */
extern int sfi_acpi_table_parse(char *signature, char *oem_id,
char *oem_table_id,
int (*handler)(struct acpi_table_header *));
static inline int acpi_sfi_table_parse(char *signature,
int (*handler)(struct acpi_table_header *))
{
if (!acpi_table_parse(signature, handler))
return 0;
return sfi_acpi_table_parse(signature, NULL, NULL, handler);
}
#else /* !CONFIG_SFI */
static inline int sfi_acpi_table_parse(char *signature, char *oem_id,
char *oem_table_id,
int (*handler)(struct acpi_table_header *))
{
return -1;
}
static inline int acpi_sfi_table_parse(char *signature,
int (*handler)(struct acpi_table_header *))
{
return acpi_table_parse(signature, handler);
}
#endif /* !CONFIG_SFI */
#endif /*_LINUX_SFI_ACPI_H*/