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InsanelyMac Forum > InsanelyMac Lounge > The X Labs > Intel SpeedStep
cybersyx
Sep 28 2009, 11:01 PM
Hi, anyone know how to enable Speedstep on Snow Leopard 64Bit? I've patched my DSDT with this:
CODE
Scope (_PR)
{
Processor (CPU0, 0x01, 0x00000810, 0x06)
{
Name (_PPC, Zero)
Name (_PCT, Package (0x02)
{
ResourceTemplate ()
{
Register (FFixedHW,
0x10, // Bit Width
0x00, // Bit Offset
0x0000000000000199, // Address
,)
},

ResourceTemplate ()
{
Register (FFixedHW,
0x10, // Bit Width
0x00, // Bit Offset
0x0000000000000198, // Address
,)
}
})
Name (_PSS, Package (0x03)
{
Package (0x06)
{
0x0C20,
0x000124F8,
0x0A,
0x0A,
0x0820,
0x0820
},

Package (0x06)
{
0x0A9C,
0xFDE8,
0x0A,
0x0A,
0x071C,
0x071C
},

Package (0x06)
{
0x0918,
0xEA60,
0x0A,
0x0A,
0x061A,
0x061A
}
})
}

Processor (CPU1, 0x02, 0x00000000, 0x00)
{
Name (_PPC, Zero)
Name (_PCT, Package (0x02)
{
ResourceTemplate ()
{
Register (FFixedHW,
0x10, // Bit Width
0x00, // Bit Offset
0x0000000000000199, // Address
,)
},

ResourceTemplate ()
{
Register (FFixedHW,
0x10, // Bit Width
0x00, // Bit Offset
0x0000000000000198, // Address
,)
}
})
Name (_PSS, Package (0x03)
{
Package (0x06)
{
0x0C20,
0x000124F8,
0x0A,
0x0A,
0x0820,
0x0820
},

Package (0x06)
{
0x0A9C,
0xFDE8,
0x0A,
0x0A,
0x071C,
0x071C
},

Package (0x06)
{
0x0918,
0xEA60,
0x0A,
0x0A,
0x061A,
0x061A
}
})
}

Processor (CPU2, 0x03, 0x00000000, 0x00)
{
Name (_PPC, Zero)
Name (_PCT, Package (0x02)
{
ResourceTemplate ()
{
Register (FFixedHW,
0x10, // Bit Width
0x00, // Bit Offset
0x0000000000000199, // Address
,)
},

ResourceTemplate ()
{
Register (FFixedHW,
0x10, // Bit Width
0x00, // Bit Offset
0x0000000000000198, // Address
,)
}
})
Name (_PSS, Package (0x03)
{
Package (0x06)
{
0x0C20,
0x000124F8,
0x0A,
0x0A,
0x0820,
0x0820
},

Package (0x06)
{
0x0A9C,
0xFDE8,
0x0A,
0x0A,
0x071C,
0x071C
},

Package (0x06)
{
0x0918,
0xEA60,
0x0A,
0x0A,
0x061A,
0x061A
}
})
}

Processor (CPU3, 0x04, 0x00000000, 0x00)
{
Name (_PPC, Zero)
Name (_PCT, Package (0x02)
{
ResourceTemplate ()
{
Register (FFixedHW,
0x10, // Bit Width
0x00, // Bit Offset
0x0000000000000199, // Address
,)
},

ResourceTemplate ()
{
Register (FFixedHW,
0x10, // Bit Width
0x00, // Bit Offset
0x0000000000000198, // Address
,)
}
})
Name (_PSS, Package (0x03)
{
Package (0x06)
{
0x0C20,
0x000124F8,
0x0A,
0x0A,
0x0820,
0x0820
},

Package (0x06)
{
0x0A9C,
0xFDE8,
0x0A,
0x0A,
0x071C,
0x071C
},

Package (0x06)
{
0x0918,
0xEA60,
0x0A,
0x0A,
0x061A,
0x061A
}
})
}
}

then i put smbios.plist in /Extra with modelname:
CODE
<key>SMproductname</key>
<string>MacPro5,1</string>


then i put Legacy_ACPI_SMC_PlatformPlugin.kext in /Extra/Extensions but speedstep not want to work.
Any idea?
Thanks a lot to all.
mitch_de
Oct 30 2009, 12:24 PM
Are your sure your CPU / mainboard has hex 810 Adress for the configuration ?
Some has hex410 (8xxx > 4xxx).
Also never use an dsdt patch without knowing that the dsdt its for same cpu / mainboard !!!
Problematic :
- config adresses (above) : you can look after them in your ssdt (you can use Everest (win) to ACPI extract that tables)
- multipliers : must really fit to your cpu ,means FSB * multiplier not much to high
0x0820 = multiplier 8 * FSB = xyz MHZ
Also VID , 0x0820 VID=20hex must fit , not much to low , not much to high

To use P-States you must enable EIST (Enh. Speedstep in BIOS) and use voodoopower or AppleIntelCPU.kext /AppleLPC. With AppleIntelCPU also ApplePLC must be loaded (kextstat to check).
voodoopower is much easier to config / getting to run than AppleIntelCPU + Apple LPC.
And i cant see any benefit using AppleIntelCPU against voodoopower.
smith@@
Oct 30 2009, 05:39 PM
Voodoopower for 64 bit there isn't now, there is only voodoopstate.kext, that working great, ihmo..

Ciao
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