How to disable devices: RTC, TIMR, IPIC via SSDT for Sandy Bridge

[amega]

How to disable devices: RTC, TIMR, IPIC via SSDT for Sandy Bridge the Method _STA does not work

 

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[Slice]

There are no problem if using Clover.

[amega]

I use OpenCore.

[etorix]

At the very least, you need to describe your platform and explain why you want to disable these devices.

[amega]

is to correct IRQ Flags in HPET, TIMR, IPIC and RTC using SSDT

this does not work

 

---------------------------------------------------------------

DefinitionBlock ("", "SSDT", 2, "Lenovo", "_IRQ", 0x00000000)
{
    External (_SB_.PCI0.LPCB, DeviceObj)
    External (_SB_.PCI0.LPCB.RTC_, DeviceObj)
    External (_SB_.PCI0.LPCB.TIMR, DeviceObj)
    External (HPTE, IntObj)

    Scope (_SB)
    {
        Method (_INI, 0, NotSerialized)  // _INI: Initialize
        {
            If (_OSI ("Darwin"))
            {
                HPTE = Zero
            }
        }
    }

    Scope (_SB.PCI0.LPCB.RTC)
    {
        Method (_STA, 0, NotSerialized)  // _STA: Status
        {
            If (_OSI ("Darwin"))
            {
                Return (Zero)
            }
            Else
            {
                Return (0x0F)
            }
        }
    }

    Scope (_SB.PCI0.LPCB.TIMR)
    {
        Method (_STA, 0, NotSerialized)  // _STA: Status
        {
            If (_OSI ("Darwin"))
            {
                Return (Zero)
            }
            Else
            {
                Return (0x0F)
            }
        }
    }

    Device (RTC0)
    {
        Name (_HID, EisaId ("PNP0B00") /* AT Real-Time Clock */)  // _HID: Hardware ID
        Name (_CRS, ResourceTemplate ()  // _CRS: Current Resource Settings
        {
            IO (Decode16,
                0x0070,             // Range Minimum
                0x0070,             // Range Maximum
                0x01,               // Alignment
                0x02,               // Length
                )
        })
        Method (_STA, 0, NotSerialized)  // _STA: Status
        {
            If (_OSI ("Darwin"))
            {
                Return (0x0F)
            }
            Else
            {
                Return (Zero)
            }
        }
    }

    Device (TIM0)
    {
        Name (_HID, EisaId ("PNP0100") /* PC-class System Timer */)  // _HID: Hardware ID
        Name (_CRS, ResourceTemplate ()  // _CRS: Current Resource Settings
        {
            IO (Decode16,
                0x0040,             // Range Minimum
                0x0040,             // Range Maximum
                0x01,               // Alignment
                0x04,               // Length
                )
            IO (Decode16,
                0x0050,             // Range Minimum
                0x0050,             // Range Maximum
                0x10,               // Alignment
                0x04,               // Length
                )
        })
        Method (_STA, 0, NotSerialized)  // _STA: Status
        {
            If (_OSI ("Darwin"))
            {
                Return (0x0F)
            }
            Else
            {
                Return (Zero)
            }
        }
    }
}
 

[Slice]

3 hours ago, amega said:

is to correct IRQ Flags in HPET, TIMR, IPIC and RTC using SSDT

this does not work

 

You may disable TMR but you should not disable HPET, IPIC, RTC as they are used in macOS as well as in Windows.

[amega]

OK. Thank you so much