External GIC of Cortex-A53 on IMX8MMINI

[Navaneethasubramanian]

Hi,

I am working BareMetal programming on imx8mmini cortex-a53 processor. I want to know the external GIC distributer which is integrated with cortex-a53 core CPU interface. I need the base address of external GIC distributer and re distributer. I couldn't any information regarding external to the core.

Thanks,

Navaneethan

[Zhiming_Liu]

Hi @Navaneethasubramanian 

We suggest you refer the Linux GICv3 driver and dts base address.

[Navaneethasubramanian]

Hi,

I am working BareMetal programming. So i am not using the U-boot and Linux. I am using ARM DS-5 startup code and imx-mkimg tool to generate flash.bin. In that startup code they were initializing GIC distributor and Re distributor from base address 0x2f000000. The referred address is right?

In linker script file:

/*
* GICv3 distributor
*/
.gicd 0x2f000000 (NOLOAD):
{
          *(.gicd)
}

/*
* GICv3 redistributors
* 128KB for each redistributor in the system
*/
.gicr 0x2f100000 (NOLOAD):
{
          *(.gicr)
}

Thanks,

Navaneethan