Is Global Interrupt Controller (GIC) optional in the CPS?

This topic contains 1 reply, has 2 voices, and was last updated by  ChrisImgtec 2 years, 3 months ago.

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  • #48348

    HungWen
    Member

    Hi,

    Is the Global Interrupt Controller (GIC) optional in  the 1004K CPS? I see MD00597, it says “the optional Global Interrupt Controller (GIC) included in the 1004K Coherent Processing System. But in “MIPS32® 1004K™ Coherent Processing System Datasheet”, the GIC is fixed in the CPS. For Soc, i can’t find any configuration options to disable it in the window for GIC Configuration Options.

    I want to comfirm this issue. Can anybody help?

    Regards

    #49281

    ChrisImgtec
    Moderator

    Check the Global Interrupt Controller Status Register (GCR_GIC_STATUS at GCR base + Offset 0x00D0). If bit 0 is set then you have a GIC.

    Check the Global Interrupt Controller Base Address Register (GCR_GIC_BASE at GCR base + Offset 0x0080). Bit 0 should be set to 1 if the GIC is enabled.

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