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Copyright
©
2013
congatec
AG
TU87m12
87/114
Feature
Options
Description
No-Snoop Latency Override
Disabled
Manual
Auto
No-Snoop latency override for PCH PCIe.
No-Snoop Latency Multiplier
1 ns, 32 ns, 1024
ns
32768 ns, 1048576 ns
33554432 ns
No-Snoop latency multiplier for PCH PCIe.
No-Snoop Latency Value
0-252
Default :
60
No-Snoop latency override for PCH PCIe.
11.4.6
ACPI Submenu
Feature
Options
Description
Hibernation Support
Disabled
Enabled
Enable or disable system ability to hibernate (operating system S4 sleep state). This option may not be
effective with some operating systems.
ACPI Sleep State
Suspend Disabled
S1 only (CPU Stop Clock)
S3 (Suspend to RAM)
Both S1 and S3 available for
OS to choose from
Select the state used for ACPI system sleep/suspend.
Lock Legacy Resources
Disabled
Enabled
Enable or disable locking of legacy resources.
S3 Video Repost
Disabled
Enabled
Enable or disable video BIOS re-post on S3 resume. Required by some operating systems.
ACPI Low Power S0 Idle
Disabled
Enabled
Enable or disable ACPI Low Power S0 Idle support.
Native PCI Express Support
Disabled
Enabled
Enable or disable native OS PCI Express support.
Native ASPM
Disabled
Enabled
Enabled = The OS will control the ASPM support of the PCI Express device.
Disabled = The BIOS will control the ASPM support of the PCI Express device.
ACPI Debug
Disabled
Enabled
Open a memory buffer for storing debug strings. Use method ADBG to write strings to buffer.
ACPI 5.0 CPPC Support
Disabled
Enabled
Enable ACPI 5.0 Collaborative Processor Performance Control (CPPC) support.
When enabled, platform exposes CPPC interfaces to operating system.
When disabled, platform exposes legacy (non-CPPC) processor interfaces to operating system.
ACPI 5.0 CPPC Platform SCI
Disabled
Enabled
Enable ACPI 5.0 platform generation of SCI on CPPC command completion.
When enabled, platform generates GPE/SCI.
When disabled platform does not generate GPE/SCI and OS polls for command completion.
Active Trip Point
Disabled, 15 C, 23 C,
31 C, 39 C, 47 C,
55 C, 63 C,
71 C
,
79 C, 87 C, 95 C,
103 C, 111 C, 119 C
Specifies the temperature threshold at which the ACPI aware OS turns the fan on/off.