Dear Coreboot Community, I am currently developing a custom motherboard based on Intel Raptor Lake-S processors and the Intel chipset with DDR5 memory support. I would like to port Coreboot to this platform and am seeking guidance from the community regarding board bring-up and firmware development. My understanding is that Raptor Lake support in Coreboot is based on the Alder Lake platform architecture and Intel FSP integration. I would appreciate any recommendations on the best existing mainboards or reference implementations that can be used as a starting point for a custom Raptor Lake-S + DDR5 design. I am particularly looking for guidance on the following topics:
* Intel FSP requirements and integration for Raptor Lake-S. * DDR5 memory initialization and training. * H610 chipset configuration and board enablement. * GPIO and pad configuration setup. * Intel ME firmware requirements. * Boot Guard considerations during development. * PCIe, SATA, USB, and onboard peripheral initialization. * Early boot debugging methods (UART, POST codes, external SPI flashing, etc.). * Recommended development workflow for a new custom mainboard port. Our goal is to bring up Coreboot on a custom Raptor Lake-S + DDR5 motherboard intended for a custom computing platform. We are currently setting up the build environment and reviewing existing Alder Lake and Raptor Lake implementations within the Coreboot source tree. Thank you for your time and support. Any documentation, examples, or recommendations would be extremely helpful. Thanks & Regards, Keshavamurthy K Note : " We Never inform change of Bank details by email. If you receive any such emails from our domain/users. Please don't respond, and contact us separately "
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