Do we really need start address from ocd to mcu?

[howard0su]

pretty much it is hard coded as 0x80000000 anywhere from what I see. Shall we remove it?

[PulseRainmaker]

Every processor has its own address space mapping. For Reindeer, it is 0x20000000 as base for Memory Mapped registers, and 0x80000000 as base for RAM. In fact, for compilers, their link script should be set to reflect such address space mapping.

[howard0su]

Is it said that 0x80000000 is something we can hardcoded in the MCU instead of passing from OCD? or we can make OCD write to PC_REG directly?

[PulseRainmaker]

We don't have to hard-code 0x80000000 as start address, but 0x80000000 is already hard-coded as the base address for RAM.

In the current verilator testbench, https://github.com/PulseRain/Reindeer/blob/master/sim/verilator/tb_PulseRain_RV2T.cpp

start_address' default value is 0x80000000. However, if _start label is found in the elf file, the start_address will be set to the address of _start label.