9. Bootloader Payloads

There are a plurality of payload implementations. Below provides a summary.

9.1. References

9.1.1. Bootloader Payloads –

Slimboot payload doc https://slimbootloader.github.io/developer-guides/payload.html
coreboot payloads https://www.coreboot.org/Payloads
UEFI payload https://github.com/tianocore/edk2/tree/master/UefiPayloadPkg
LinuxBoot https://www.linuxboot.org/
PI 1.7 https://uefi.org/specifications
VaultBoot https://github.com/hardenedvault/vaultboot

9.1.2. OS/Hv interfaces

Kernel load protocol doc https://www.kernel.org/doc/Documentation/x86/boot.txt

UEFI 2.9 https://uefi.org/specifications
ACPI 6.3 https://uefi.org/specifications
PRM https://github.com/tianocore/edk2-staging/tree/PRMCaseStudy

9.1.3. Platform implementations

EDKII www.tianocore.org (also possible payload)
EDKII min platform https://edk2-docs.gitbook.io/edk-ii-minimum-platform-specification/
coreboot https://www.coreboot.org
slimboot https://slimbootloader.github.io/
u-boot https://www.denx.de/wiki/U-Boot (also possible payload)
oreboot https://github.com/oreboot/oreboot

9.1.4. Security

SPDM https://www.dmtf.org/sites/default/files/standards/documents/DSP0274_0.99a.pdf
Building Secure Firmware https://link.springer.com/book/10.1007/978-1-4842-6106-4