I am working on customizing petalinux for my IP. My objective is to make all the memory requests from Linux have to pass through PL and PL will in the backend will serve read/store request, basically my IP sits in between the PS and the DDR as shown below block diagram,
I am using Zymq Zdboard, I tested working of this in Vitis, But now I want OS to send memory request to my IP instead of DDR directly.
I changed device tree and in the uboot I am able to see my IP address as the DRAM address, However, kernel base address is still pointing to DDR.
device_type = "memory";
reg = <0x40000000 0x20000000>;
The bdinfo output is attached below,
Zynq> arch_number = 0x00000000 boot_params = 0x00000000 DRAM bank = 0x00000000 -> start = 0x40000000 -> size = 0x10000000 baudrate = 115200 bps TLB addr = 0x4fff0000 relocaddr = 0x4ff2e000 reloc off = 0x4bf2e000 irq_sp = 0x4eb0b030 sp start = 0x4eb0b020 ARM frequency = 666 MHz DSP frequency = 0 MHz DDR frequency = 533 MHz Early malloc usage: 5f8 / 800 fdt_blob = 0x4eb0b048
Could you tell me how to get this working??
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