i.MX ProcessorsのトピックDistributor base address on i.MX8M

Distributor base address on i.MX8M

pnee — Tue, 26 Nov 2019 16:04:51 GMT

How does one find the distributor base address on i.MX8M. The ARM GIC-500 TRM (see below) states the distributor base address is defined by the system memory map. Where in the i.MX8M memory map is this defined?

Re: Distributor base address on i.MX8M

igorpadykov — Tue, 26 Nov 2019 23:12:40 GMT

Hi PJ

one can look at sect.2.1.2 Cortex-A53 Memory Map

i.MX 8M Dual/8M QuadLite/8M Quad Applications Processors Reference Manual

Best regards
igor
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Re: Distributor base address on i.MX8M

pnee — Tue, 03 Dec 2019 16:29:31 GMT

Ok - so sect.2.1.2 Cortex-A53 Memory Map defines GIC REG with a base address of 0x38800000. Does this equate to the distributor base address?

Also the GIC-500 TRM also states the GIC-500 base address is not fixed and differs on each implementation (see below). Is there a programmatic way to find the base address?

Re: Distributor base address on i.MX8M

igorpadykov — Tue, 03 Dec 2019 23:58:55 GMT

GIC-500 base address in this implementation is given in sect.2.1.2 Cortex-A53 Memory Map

i.MX 8M Dual/8M QuadLite/8M Quad Applications Processors Reference Manual

Best regards
igor

Re: Distributor base address on i.MX8M

neilturner — Tue, 12 Jan 2021 12:06:32 GMT

I am also struggling with this issue on an i.MX8 Nano. Section 2.1.2 (Cortex-A53 Memory Map) of the i.MX 8M Nano Applications Processor
Reference Manual (IMX8MNRM.pdf) (Cortex-A53 Memory Map) shows,

3880_0000 388F_FFFF GIC 1MB GIC REG

But nowhere is that broken down into the ARM defined, "Distributor base address", "CPU interface
base address". Where can I find that information?

Neil