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 <pmenzel@molgen.mpg.de> 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

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