Now I wanted to learn the "hard" part, mainly RAM initialization and PCI
enumeration.
Hard part, indeed, I should say. RAM init = MRC (INTEL IP), PCIe enumeration, also IP, also part of FSP (there are open source alternatives to PCIe enumeration). To really learn these, you should either have/obtain source code, either to do reverse engineering.
None of these are easy. Maybe, upon getting HW, you should a bit explore algorithms inside FSP using JTAG debugger (solely for the learning experiences/purposes). Just a thought.
Zoran
On Wed, Aug 24, 2016 at 11:31 AM, Rishav Ambasta kooolrishav@gmail.com wrote:
I am exploring Coreboot. I had bought a Minnowboard, which will take some time to arrive. Meanwhile I wanted to carry out the learning on an emulator. I had compiled a ROM for QEMU and it ran successfully. I even tried with different payloads (which I hear is the easy part of the boot process) Now I wanted to learn the "hard" part, mainly RAM initialization and PCI enumeration.
I had generated a ROM using the Minnowboard FSP, but I was not able to boot QEMU using it.
Need suggestions on how can one, trace or at-least log the steps in the boot-block stage, ROM stage and RAM stage of Minnowboard on an Emulator.
Regards, *Rishav Ambasta*
*Save Plants, Save Life ...*
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