Instruction to verify emulation on GEM5

[Vivek Gupta]

I am currently looking to setup AARCH64 platform simulation verification of
coreboot on Gem5 simulation environment. Do we have any
document/wikipage to understand the compilation and configuration process?

[Paul Menzel]

Dear Vivek,

Am 16.07.20 um 00:46 schrieb Vivek Gupta via coreboot:
> I am currently looking to setup AARCH64 platform simulation
> verification of coreboot on Gem5 simulation environment. Do we have
> any document/wikipage to understand the compilation and configuration
> process?

The tutorial [1] should get you started. Basically, coreboot uses 
Kconfig, but there is also the tool abuild [2], you might want to look at.

Kind regards,

Paul

[1]: https://doc.coreboot.org/tutorial/index.html
[2]: https://doc.coreboot.org/util.html

[Vivek Gupta]

Thanks Paul for the details. Actually I am not able to find Gem5 simulation
environment as listed option in kconfig. Do I need to select some other
variant of it like QEMU? I am putting below CONFIG defs

CONFIG_ANY_TOOLCHAIN=y
CONFIG_COLLECT_TIMESTAMPS=y
CONFIG_MAINBOARD_VENDOR="GEM5"
CONFIG_BOARD_EMULATION_QEMU_AARCH64=y
CONFIG_COREBOOT_ROMSIZE_KB_256=y
CONFIG_PAYLOAD_ELF=y
CONFIG_PAYLOAD_FILE="payloads/coreinfo/build/coreinfo.elf"

Best regards
Vivek Gupta

On Wed, Jul 15, 2020 at 11:26 PM Paul Menzel  wrote:
> Dear Vivek,
>
> Am 16.07.20 um 00:46 schrieb Vivek Gupta via coreboot:
> > I am currently looking to setup AARCH64 platform simulation
> > verification of coreboot on Gem5 simulation environment. Do we have
> > any document/wikipage to understand the compilation and configuration
> > process?
>
> The tutorial [1] should get you started. Basically, coreboot uses
> Kconfig, but there is also the tool abuild [2], you might want to look at.
>
> Kind regards,
>
> Paul

[Paul Menzel]

Dear Vivek,

(Please follow the mailing list etiquette and use interleaved style, 
when replying.)

Am 21.07.20 um 04:09 schrieb Vivek Gupta:
> Actually I am not able to find Gem5 simulation environment as listed
> option in kconfig.

It’s the first time I am hearing of the “Gem5 simulation environment“.
> Do I need to select some other variant of it like QEMU? I am putting
> below CONFIG defs
>
> CONFIG_ANY_TOOLCHAIN=y
> CONFIG_COLLECT_TIMESTAMPS=y
> CONFIG_MAINBOARD_VENDOR="GEM5"
> CONFIG_BOARD_EMULATION_QEMU_AARCH64=y
> CONFIG_COREBOOT_ROMSIZE_KB_256=y
> CONFIG_PAYLOAD_ELF=y
> CONFIG_PAYLOAD_FILE="payloads/coreinfo/build/coreinfo.elf"

Sorry, no idea. If Gem5 uses QEMU as a basis, then it could work.

Please give more details what it is, and how to use the Gem5 environment.

Kind regards,

Paul