[fedora-arm] How boot process works

[Alessio Ciregia]

Hello.
I know, there is google. :-)
But someone could suggest a document that explains in simple words how the
Raspberry Pi boot process works? In Fedora I know there is a vfat
partition. What are the involved files? Who tell to look for the uboot
file? Etc.
Please be patient, I'm not a developer nor an engineer, just asking to
understand a little bit more how things works.

Thanks,
A.

[Peter Robinson]

Post by Alessio Ciregia
Hello.
I know, there is google. :-)
But someone could suggest a document that explains in simple words how the
Raspberry Pi boot process works? In Fedora I know there is a vfat partition.
What are the involved files? Who tell to look for the uboot file? Etc.
Please be patient, I'm not a developer nor an engineer, just asking to
understand a little bit more how things works.

1) The GPU firmware loads off the VFAT partition (google for exactly
what the various files do)
2) the firmware then loads the "kernel" if it's specified in the
config.txt or else the defaults
3) u-boot loads
4) u-boot then boots what it finds, in the case of ARMv7 this is the
linux kernel based on the extlinux.conf file, in the case of aarch64
this is grub using the uEFI implementation in u-boot.
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