Architectures and Processors forum how to determine the base address of Interrupt Translation Service (ITS)

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how to determine the base address of Interrupt Translation Service (ITS)

huoyan over 3 years ago

Cortex A53, GIC500，

I know the base address of GIC Distributor Control Register is 0x08100000, and the base address of GIC Redistributor Control Register is 0x08180000,

but I don't know the base address of Interrupt Translation Service (ITS), so could you nicely give me some sugestions to find the answer?

thanks very much.

best regards,

qianqian

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Martin Weidmann over 3 years ago +2 verified

There isn't a generic-architectural way of determining the address of the ITS. Software needs to "know" the address, which would typically by via querying firmware tables. But specifically for the GIC...

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0 huoyan over 3 years ago in reply to Martin Weidmann

thanks very much, I will read the document you recommend, and try the formula in it.
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0 huoyan over 3 years ago in reply to Martin Weidmann

thanks very much, I will read the document you recommend, and try the formula in it.
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