Baremetal booting

[jimaandro]

Hi
I am trying to run a baremetal C program (I have converted it to bin and then I transfered it to DDR at 0x80000000). I want to use the baremetal bootloader. How should I configure the HW in order to boot in baremetal mode?

[Jbalkind]

I'd need a little more information to understand what you're describing - Is this on FPGA? In simulation? How did you transfer the binary to DDR?

[jimaandro]

I'd need a little more information to understand what you're describing - Is this on FPGA? In simulation? How did you transfer the binary to DDR?

Thanks for reply!
Yes it's in FPGA, I used PCI (Xilinx QDMA) to transfer the binary to DDR

[Jbalkind]

Ah ok got it. You have two options. One is you can just change the sense of the instantiation of the bootrom inside riscv_peripherals.sv so that the bare metal one is instantiated instead of the linux one. The other is you can modify the linux bootrom to remove the call to sd_copy(). The latter is what our colleagues at BSC do and it seems to work best for them.