|
|
|
|
|
|
|
|
|
/******************************************************************************
|
|
|
|
|
*
|
|
|
|
|
* Module Name: hwacpi - ACPI Hardware Initialization/Mode Interface
|
|
|
|
|
*
|
|
|
|
|
*****************************************************************************/
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Copyright (C) 2000 - 2006, R. Byron Moore
|
|
|
|
|
* All rights reserved.
|
|
|
|
|
*
|
|
|
|
|
* Redistribution and use in source and binary forms, with or without
|
|
|
|
|
* modification, are permitted provided that the following conditions
|
|
|
|
|
* are met:
|
|
|
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
|
|
|
* notice, this list of conditions, and the following disclaimer,
|
|
|
|
|
* without modification.
|
|
|
|
|
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
|
|
|
|
|
* substantially similar to the "NO WARRANTY" disclaimer below
|
|
|
|
|
* ("Disclaimer") and any redistribution must be conditioned upon
|
|
|
|
|
* including a substantially similar Disclaimer requirement for further
|
|
|
|
|
* binary redistribution.
|
|
|
|
|
* 3. Neither the names of the above-listed copyright holders nor the names
|
|
|
|
|
* of any contributors may be used to endorse or promote products derived
|
|
|
|
|
* from this software without specific prior written permission.
|
|
|
|
|
*
|
|
|
|
|
* Alternatively, this software may be distributed under the terms of the
|
|
|
|
|
* GNU General Public License ("GPL") version 2 as published by the Free
|
|
|
|
|
* Software Foundation.
|
|
|
|
|
*
|
|
|
|
|
* NO WARRANTY
|
|
|
|
|
* 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 MERCHANTIBILITY AND FITNESS FOR
|
|
|
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
|
|
|
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
#include <acpi/acpi.h>
|
|
|
|
|
|
|
|
|
|
#define _COMPONENT ACPI_HARDWARE
|
|
|
|
|
ACPI_MODULE_NAME("hwacpi")
|
|
|
|
|
|
|
|
|
|
/******************************************************************************
|
|
|
|
|
*
|
|
|
|
|
* FUNCTION: acpi_hw_initialize
|
|
|
|
|
*
|
|
|
|
|
* PARAMETERS: None
|
|
|
|
|
*
|
|
|
|
|
* RETURN: Status
|
|
|
|
|
*
|
|
|
|
|
* DESCRIPTION: Initialize and validate the various ACPI registers defined in
|
|
|
|
|
* the FADT.
|
|
|
|
|
*
|
|
|
|
|
******************************************************************************/
|
|
|
|
|
acpi_status acpi_hw_initialize(void)
|
|
|
|
|
{
|
|
|
|
|
acpi_status status;
|
|
|
|
|
|
ACPI: ACPICA 20060421
Removed a device initialization optimization introduced in
20051216 where the _STA method was not run unless an _INI
was also present for the same device. This optimization
could cause problems because it could allow _INI methods
to be run within a not-present device subtree (If a
not-present device had no _INI, _STA would not be run,
the not-present status would not be discovered, and the
children of the device would be incorrectly traversed.)
Implemented a new _STA optimization where namespace
subtrees that do not contain _INI are identified and
ignored during device initialization. Selectively running
_STA can significantly improve boot time on large machines
(with assistance from Len Brown.)
Implemented support for the device initialization case
where the returned _STA flags indicate a device not-present
but functioning. In this case, _INI is not run, but the
device children are examined for presence, as per the
ACPI specification.
Implemented an additional change to the IndexField support
in order to conform to MS behavior. The value written to
the Index Register is not simply a byte offset, it is a
byte offset in units of the access width of the parent
Index Field. (Fiodor Suietov)
Defined and deployed a new OSL interface,
acpi_os_validate_address(). This interface is called during
the creation of all AML operation regions, and allows
the host OS to exert control over what addresses it will
allow the AML code to access. Operation Regions whose
addresses are disallowed will cause a runtime exception
when they are actually accessed (will not affect or abort
table loading.)
Defined and deployed a new OSL interface,
acpi_os_validate_interface(). This interface allows the host OS
to match the various "optional" interface/behavior strings
for the _OSI predefined control method as appropriate
(with assistance from Bjorn Helgaas.)
Restructured and corrected various problems in the
exception handling code paths within DsCallControlMethod
and DsTerminateControlMethod in dsmethod (with assistance
from Takayoshi Kochi.)
Modified the Linux source converter to ignore quoted string
literals while converting identifiers from mixed to lower
case. This will correct problems with the disassembler
and other areas where such strings must not be modified.
The ACPI_FUNCTION_* macros no longer require quotes around
the function name. This allows the Linux source converter
to convert the names, now that the converter ignores
quoted strings.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
19 years ago
|
|
|
ACPI_FUNCTION_TRACE(hw_initialize);
|
|
|
|
|
|
|
|
|
|
/* We must have the ACPI tables by the time we get here */
|
|
|
|
|
|
|
|
|
|
if (!acpi_gbl_FADT) {
|
|
|
|
|
ACPI_ERROR((AE_INFO, "No FADT is present"));
|
|
|
|
|
return_ACPI_STATUS(AE_NO_ACPI_TABLES);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Sanity check the FADT for valid values */
|
|
|
|
|
|
|
|
|
|
status = acpi_ut_validate_fadt();
|
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
|
return_ACPI_STATUS(status);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return_ACPI_STATUS(AE_OK);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/******************************************************************************
|
|
|
|
|
*
|
|
|
|
|
* FUNCTION: acpi_hw_set_mode
|
|
|
|
|
*
|
|
|
|
|
* PARAMETERS: Mode - SYS_MODE_ACPI or SYS_MODE_LEGACY
|
|
|
|
|
*
|
|
|
|
|
* RETURN: Status
|
|
|
|
|
*
|
|
|
|
|
* DESCRIPTION: Transitions the system into the requested mode.
|
|
|
|
|
*
|
|
|
|
|
******************************************************************************/
|
|
|
|
|
|
|
|
|
|
acpi_status acpi_hw_set_mode(u32 mode)
|
|
|
|
|
{
|
|
|
|
|
|
|
|
|
|
acpi_status status;
|
|
|
|
|
u32 retry;
|
|
|
|
|
|
ACPI: ACPICA 20060421
Removed a device initialization optimization introduced in
20051216 where the _STA method was not run unless an _INI
was also present for the same device. This optimization
could cause problems because it could allow _INI methods
to be run within a not-present device subtree (If a
not-present device had no _INI, _STA would not be run,
the not-present status would not be discovered, and the
children of the device would be incorrectly traversed.)
Implemented a new _STA optimization where namespace
subtrees that do not contain _INI are identified and
ignored during device initialization. Selectively running
_STA can significantly improve boot time on large machines
(with assistance from Len Brown.)
Implemented support for the device initialization case
where the returned _STA flags indicate a device not-present
but functioning. In this case, _INI is not run, but the
device children are examined for presence, as per the
ACPI specification.
Implemented an additional change to the IndexField support
in order to conform to MS behavior. The value written to
the Index Register is not simply a byte offset, it is a
byte offset in units of the access width of the parent
Index Field. (Fiodor Suietov)
Defined and deployed a new OSL interface,
acpi_os_validate_address(). This interface is called during
the creation of all AML operation regions, and allows
the host OS to exert control over what addresses it will
allow the AML code to access. Operation Regions whose
addresses are disallowed will cause a runtime exception
when they are actually accessed (will not affect or abort
table loading.)
Defined and deployed a new OSL interface,
acpi_os_validate_interface(). This interface allows the host OS
to match the various "optional" interface/behavior strings
for the _OSI predefined control method as appropriate
(with assistance from Bjorn Helgaas.)
Restructured and corrected various problems in the
exception handling code paths within DsCallControlMethod
and DsTerminateControlMethod in dsmethod (with assistance
from Takayoshi Kochi.)
Modified the Linux source converter to ignore quoted string
literals while converting identifiers from mixed to lower
case. This will correct problems with the disassembler
and other areas where such strings must not be modified.
The ACPI_FUNCTION_* macros no longer require quotes around
the function name. This allows the Linux source converter
to convert the names, now that the converter ignores
quoted strings.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
19 years ago
|
|
|
ACPI_FUNCTION_TRACE(hw_set_mode);
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* ACPI 2.0 clarified that if SMI_CMD in FADT is zero,
|
|
|
|
|
* system does not support mode transition.
|
|
|
|
|
*/
|
|
|
|
|
if (!acpi_gbl_FADT->smi_cmd) {
|
|
|
|
|
ACPI_ERROR((AE_INFO,
|
|
|
|
|
"No SMI_CMD in FADT, mode transition failed"));
|
|
|
|
|
return_ACPI_STATUS(AE_NO_HARDWARE_RESPONSE);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* ACPI 2.0 clarified the meaning of ACPI_ENABLE and ACPI_DISABLE
|
|
|
|
|
* in FADT: If it is zero, enabling or disabling is not supported.
|
|
|
|
|
* As old systems may have used zero for mode transition,
|
|
|
|
|
* we make sure both the numbers are zero to determine these
|
|
|
|
|
* transitions are not supported.
|
|
|
|
|
*/
|
|
|
|
|
if (!acpi_gbl_FADT->acpi_enable && !acpi_gbl_FADT->acpi_disable) {
|
|
|
|
|
ACPI_ERROR((AE_INFO,
|
|
|
|
|
"No ACPI mode transition supported in this system (enable/disable both zero)"));
|
|
|
|
|
return_ACPI_STATUS(AE_OK);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
switch (mode) {
|
|
|
|
|
case ACPI_SYS_MODE_ACPI:
|
|
|
|
|
|
|
|
|
|
/* BIOS should have disabled ALL fixed and GP events */
|
|
|
|
|
|
|
|
|
|
status = acpi_os_write_port(acpi_gbl_FADT->smi_cmd,
|
|
|
|
|
(u32) acpi_gbl_FADT->acpi_enable,
|
|
|
|
|
8);
|
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
|
|
|
|
|
"Attempting to enable ACPI mode\n"));
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case ACPI_SYS_MODE_LEGACY:
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* BIOS should clear all fixed status bits and restore fixed event
|
|
|
|
|
* enable bits to default
|
|
|
|
|
*/
|
|
|
|
|
status = acpi_os_write_port(acpi_gbl_FADT->smi_cmd,
|
|
|
|
|
(u32) acpi_gbl_FADT->acpi_disable,
|
|
|
|
|
8);
|
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
|
|
|
|
|
"Attempting to enable Legacy (non-ACPI) mode\n"));
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
default:
|
|
|
|
|
return_ACPI_STATUS(AE_BAD_PARAMETER);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
|
ACPI_EXCEPTION((AE_INFO, status,
|
|
|
|
|
"Could not write ACPI mode change"));
|
|
|
|
|
return_ACPI_STATUS(status);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Some hardware takes a LONG time to switch modes. Give them 3 sec to
|
|
|
|
|
* do so, but allow faster systems to proceed more quickly.
|
|
|
|
|
*/
|
|
|
|
|
retry = 3000;
|
|
|
|
|
while (retry) {
|
|
|
|
|
if (acpi_hw_get_mode() == mode) {
|
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
|
|
|
|
|
"Mode %X successfully enabled\n",
|
|
|
|
|
mode));
|
|
|
|
|
return_ACPI_STATUS(AE_OK);
|
|
|
|
|
}
|
|
|
|
|
acpi_os_stall(1000);
|
|
|
|
|
retry--;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
ACPI_ERROR((AE_INFO, "Hardware did not change modes"));
|
|
|
|
|
return_ACPI_STATUS(AE_NO_HARDWARE_RESPONSE);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*******************************************************************************
|
|
|
|
|
*
|
|
|
|
|
* FUNCTION: acpi_hw_get_mode
|
|
|
|
|
*
|
|
|
|
|
* PARAMETERS: none
|
|
|
|
|
*
|
|
|
|
|
* RETURN: SYS_MODE_ACPI or SYS_MODE_LEGACY
|
|
|
|
|
*
|
|
|
|
|
* DESCRIPTION: Return current operating state of system. Determined by
|
|
|
|
|
* querying the SCI_EN bit.
|
|
|
|
|
*
|
|
|
|
|
******************************************************************************/
|
|
|
|
|
|
|
|
|
|
u32 acpi_hw_get_mode(void)
|
|
|
|
|
{
|
|
|
|
|
acpi_status status;
|
|
|
|
|
u32 value;
|
|
|
|
|
|
ACPI: ACPICA 20060421
Removed a device initialization optimization introduced in
20051216 where the _STA method was not run unless an _INI
was also present for the same device. This optimization
could cause problems because it could allow _INI methods
to be run within a not-present device subtree (If a
not-present device had no _INI, _STA would not be run,
the not-present status would not be discovered, and the
children of the device would be incorrectly traversed.)
Implemented a new _STA optimization where namespace
subtrees that do not contain _INI are identified and
ignored during device initialization. Selectively running
_STA can significantly improve boot time on large machines
(with assistance from Len Brown.)
Implemented support for the device initialization case
where the returned _STA flags indicate a device not-present
but functioning. In this case, _INI is not run, but the
device children are examined for presence, as per the
ACPI specification.
Implemented an additional change to the IndexField support
in order to conform to MS behavior. The value written to
the Index Register is not simply a byte offset, it is a
byte offset in units of the access width of the parent
Index Field. (Fiodor Suietov)
Defined and deployed a new OSL interface,
acpi_os_validate_address(). This interface is called during
the creation of all AML operation regions, and allows
the host OS to exert control over what addresses it will
allow the AML code to access. Operation Regions whose
addresses are disallowed will cause a runtime exception
when they are actually accessed (will not affect or abort
table loading.)
Defined and deployed a new OSL interface,
acpi_os_validate_interface(). This interface allows the host OS
to match the various "optional" interface/behavior strings
for the _OSI predefined control method as appropriate
(with assistance from Bjorn Helgaas.)
Restructured and corrected various problems in the
exception handling code paths within DsCallControlMethod
and DsTerminateControlMethod in dsmethod (with assistance
from Takayoshi Kochi.)
Modified the Linux source converter to ignore quoted string
literals while converting identifiers from mixed to lower
case. This will correct problems with the disassembler
and other areas where such strings must not be modified.
The ACPI_FUNCTION_* macros no longer require quotes around
the function name. This allows the Linux source converter
to convert the names, now that the converter ignores
quoted strings.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
19 years ago
|
|
|
ACPI_FUNCTION_TRACE(hw_get_mode);
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* ACPI 2.0 clarified that if SMI_CMD in FADT is zero,
|
|
|
|
|
* system does not support mode transition.
|
|
|
|
|
*/
|
|
|
|
|
if (!acpi_gbl_FADT->smi_cmd) {
|
[ACPI] ACPICA 20050930
Completed a major overhaul of the Resource Manager code -
specifically, optimizations in the area of the AML/internal
resource conversion code. The code has been optimized to
simplify and eliminate duplicated code, CPU stack use has
been decreased by optimizing function parameters and local
variables, and naming conventions across the manager have
been standardized for clarity and ease of maintenance (this
includes function, parameter, variable, and struct/typedef
names.)
All Resource Manager dispatch and information tables have
been moved to a single location for clarity and ease of
maintenance. One new file was created, named "rsinfo.c".
The ACPI return macros (return_ACPI_STATUS, etc.) have
been modified to guarantee that the argument is
not evaluated twice, making them less prone to macro
side-effects. However, since there exists the possibility
of additional stack use if a particular compiler cannot
optimize them (such as in the debug generation case),
the original macros are optionally available. Note that
some invocations of the return_VALUE macro may now cause
size mismatch warnings; the return_UINT8 and return_UINT32
macros are provided to eliminate these. (From Randy Dunlap)
Implemented a new mechanism to enable debug tracing for
individual control methods. A new external interface,
acpi_debug_trace(), is provided to enable this mechanism. The
intent is to allow the host OS to easily enable and disable
tracing for problematic control methods. This interface
can be easily exposed to a user or debugger interface if
desired. See the file psxface.c for details.
acpi_ut_callocate() will now return a valid pointer if a
length of zero is specified - a length of one is used
and a warning is issued. This matches the behavior of
acpi_ut_allocate().
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
20 years ago
|
|
|
return_UINT32(ACPI_SYS_MODE_ACPI);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
status =
|
|
|
|
|
acpi_get_register(ACPI_BITREG_SCI_ENABLE, &value, ACPI_MTX_LOCK);
|
|
|
|
|
if (ACPI_FAILURE(status)) {
|
[ACPI] ACPICA 20050930
Completed a major overhaul of the Resource Manager code -
specifically, optimizations in the area of the AML/internal
resource conversion code. The code has been optimized to
simplify and eliminate duplicated code, CPU stack use has
been decreased by optimizing function parameters and local
variables, and naming conventions across the manager have
been standardized for clarity and ease of maintenance (this
includes function, parameter, variable, and struct/typedef
names.)
All Resource Manager dispatch and information tables have
been moved to a single location for clarity and ease of
maintenance. One new file was created, named "rsinfo.c".
The ACPI return macros (return_ACPI_STATUS, etc.) have
been modified to guarantee that the argument is
not evaluated twice, making them less prone to macro
side-effects. However, since there exists the possibility
of additional stack use if a particular compiler cannot
optimize them (such as in the debug generation case),
the original macros are optionally available. Note that
some invocations of the return_VALUE macro may now cause
size mismatch warnings; the return_UINT8 and return_UINT32
macros are provided to eliminate these. (From Randy Dunlap)
Implemented a new mechanism to enable debug tracing for
individual control methods. A new external interface,
acpi_debug_trace(), is provided to enable this mechanism. The
intent is to allow the host OS to easily enable and disable
tracing for problematic control methods. This interface
can be easily exposed to a user or debugger interface if
desired. See the file psxface.c for details.
acpi_ut_callocate() will now return a valid pointer if a
length of zero is specified - a length of one is used
and a warning is issued. This matches the behavior of
acpi_ut_allocate().
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
20 years ago
|
|
|
return_UINT32(ACPI_SYS_MODE_LEGACY);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (value) {
|
[ACPI] ACPICA 20050930
Completed a major overhaul of the Resource Manager code -
specifically, optimizations in the area of the AML/internal
resource conversion code. The code has been optimized to
simplify and eliminate duplicated code, CPU stack use has
been decreased by optimizing function parameters and local
variables, and naming conventions across the manager have
been standardized for clarity and ease of maintenance (this
includes function, parameter, variable, and struct/typedef
names.)
All Resource Manager dispatch and information tables have
been moved to a single location for clarity and ease of
maintenance. One new file was created, named "rsinfo.c".
The ACPI return macros (return_ACPI_STATUS, etc.) have
been modified to guarantee that the argument is
not evaluated twice, making them less prone to macro
side-effects. However, since there exists the possibility
of additional stack use if a particular compiler cannot
optimize them (such as in the debug generation case),
the original macros are optionally available. Note that
some invocations of the return_VALUE macro may now cause
size mismatch warnings; the return_UINT8 and return_UINT32
macros are provided to eliminate these. (From Randy Dunlap)
Implemented a new mechanism to enable debug tracing for
individual control methods. A new external interface,
acpi_debug_trace(), is provided to enable this mechanism. The
intent is to allow the host OS to easily enable and disable
tracing for problematic control methods. This interface
can be easily exposed to a user or debugger interface if
desired. See the file psxface.c for details.
acpi_ut_callocate() will now return a valid pointer if a
length of zero is specified - a length of one is used
and a warning is issued. This matches the behavior of
acpi_ut_allocate().
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
20 years ago
|
|
|
return_UINT32(ACPI_SYS_MODE_ACPI);
|
|
|
|
|
} else {
|
[ACPI] ACPICA 20050930
Completed a major overhaul of the Resource Manager code -
specifically, optimizations in the area of the AML/internal
resource conversion code. The code has been optimized to
simplify and eliminate duplicated code, CPU stack use has
been decreased by optimizing function parameters and local
variables, and naming conventions across the manager have
been standardized for clarity and ease of maintenance (this
includes function, parameter, variable, and struct/typedef
names.)
All Resource Manager dispatch and information tables have
been moved to a single location for clarity and ease of
maintenance. One new file was created, named "rsinfo.c".
The ACPI return macros (return_ACPI_STATUS, etc.) have
been modified to guarantee that the argument is
not evaluated twice, making them less prone to macro
side-effects. However, since there exists the possibility
of additional stack use if a particular compiler cannot
optimize them (such as in the debug generation case),
the original macros are optionally available. Note that
some invocations of the return_VALUE macro may now cause
size mismatch warnings; the return_UINT8 and return_UINT32
macros are provided to eliminate these. (From Randy Dunlap)
Implemented a new mechanism to enable debug tracing for
individual control methods. A new external interface,
acpi_debug_trace(), is provided to enable this mechanism. The
intent is to allow the host OS to easily enable and disable
tracing for problematic control methods. This interface
can be easily exposed to a user or debugger interface if
desired. See the file psxface.c for details.
acpi_ut_callocate() will now return a valid pointer if a
length of zero is specified - a length of one is used
and a warning is issued. This matches the behavior of
acpi_ut_allocate().
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
20 years ago
|
|
|
return_UINT32(ACPI_SYS_MODE_LEGACY);
|
|
|
|
|
}
|
|
|
|
|
}
|
