Booting Modern Intel CPUs

• arm-trusted-firmware

  9 1,820 9.9 C

  Read-only mirror of Trusted Firmware-A

  

Arm v7 was a Wild West, but with v8, Arm tried to standardize a lot. The Arm Trusted Firmware is the reference boot firmware implementation for v8+ CPUs: https://github.com/ARM-software/arm-trusted-firmware.

I'd think most of the referece documents can be discovered from that code base.

Relatedly, from the perspective of hands-on programming, the System Programmer's guide is the manual to start with.

• coreboot

  92 2,072 10.0 C

  Mirror of https://review.coreboot.org/coreboot.git. We don't handle Pull Requests.

  

You usually can't take existing firmware and run it on a new CPU, because the new CPU requires different bringup code anyway. Take a look at https://github.com/coreboot/coreboot/tree/master/src/soc/int... to get some idea of how many different implementations there are for modern Intel alone (there's a bunch more for the pre-SoC style Intels). If you already have to port your firmware to a new CPU, you can deal with the CPU starting in a different mode - it is entirely an implementation detail that can be handled in the firmware.

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