Re: [Bug 1898883] [NEW] qemu-system-riscv64 failed to load binary kernel into memory

[Bin Meng]

On Wed, Oct 7, 2020 at 10:37 PM Azuk 443 <1898883@bugs.launchpad.net> wrote:
>
> Public bug reported:
>
> QEMU Version: 5.1.0
> Compiled in Ubuntu 20.04 for riscv64, following the guide 
> https://risc-v-getting-started-guide.readthedocs.io/en/latest/linux-qemu.html.
>
> In qemu-system-riscv64, code at 0x80000000 will be executed by virtual CPU.
> For example, using `qemu-system-riscv64 -nographic -machine virt -bios none 
> -kernel vmlinux -S -s`, my homebrew kernel(ELF file) will load at 0x80000000. 
> If I strip the kernel using `riscv64-linux-gnu-objcopy -O binary vmlinux 
> Image`, qemu-system-riscv64 will not load the binary machine code into the 
> riscv64 load address, but `-bios Image` will.

This is not a bug. As you said, please use `-bios Image` for your
special purpose.

>
> In `qemu-system-aarch64` compiled by Ubuntu team, I can use `qemu-
> system-aarch64 -M raspi3 -kernel Image_aarch64 -S -s` to load a specific
> machine code binary into 0x80000. And the elf kernel can be loaded to
> that address, too.
>
> ** Affects: qemu
>      Importance: Undecided
>          Status: New
>

Regards,
Bin