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Hello,
The reason I am asking this question is when I am trying to add GICv3 code into Startup_Cortex-R82 sample code under ADS 2023.1, with "-C gic_distributor.print-memory-map=1", I can see following map address printout:GICv3 map: 0x2f000000--0x2f00ffff: GICD registers.GICv3 map: 0x2f100000--0x2f11ffff: GICR registers for 0.0.0.0.GICv3 map: 0x2f120000--0x2f13ffff: GICR registers for 0.0.1.0.But after I load the startup_Cortex-R82.axf, and check above addresses through memory window, they don't look like valid GIC registers,EL2S:0x000000002F000000: 0xDFDFDFCF 0xCFDFDFDF 0xDFDFDFCF 0xCFDFDFDF 0xDFDFDFCF 0xCFDFDFDF 0xDFDFDFCF 0xCFDFDFDF EL2S:0x000000002F000020: 0xDFDFDFCF 0xCFDFDFDF 0xDFDFDFCF 0xCFDFDFDF 0xDFDFDFCF 0xCFDFDFDF 0xDFDFDFCF 0xCFDFDFDF EL2S:0x000000002F000040: 0xDFDFDFCF 0xCFDFDFDF 0xDFDFDFCF ...
EL2S:0x000000002F100000: 0xDFDFDFCF 0xCFDFDFDF 0xDFDFDFCF 0xCFDFDFDF 0xDFDFDFCF 0xCFDFDFDF 0xDFDFDFCF 0xCFDFDFDF EL2S:0x000000002F100020: 0xDFDFDFCF 0xCFDFDFDF 0xDFDFDFCF 0xCFDFDFDF 0xDFDFDFCF 0xCFDFDFDF 0xDFDFDFCF 0xCFDFDFDF EL2S:0x000000002F100040: 0xDFDFDFCF 0xCFDFDFDF 0xDFDFDFCF 0xCFDFDFDF 0xDFDFDFCF 0xCFDFDFDF 0xDFDFDFCF 0xCFDFDFDF
Any thing wrong in my setup?
Thanks
Apologies for my previous reply as it contains incorrect information.
For R82, which has single security state, you should only see EnableGrp1 and EnableGrp0 and that is why you cannot set bit[2], which is RES0
developer.arm.com/.../GICD-CTLR--Distributor-Control-Register