ski-efi: A new binary for a minimal EFI binary #9
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The change looks reasonable. |
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Makefile was ignored due to .gitignore. Added it and repushed |
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Ahh, I'll have a look at overeager Pulled a is. Thank you! |
Some of the subdirectories have manual Makefiles. Was mentioned by phcoder in #9 (comment).
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@phcoder: |
| # Current status | ||
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| `ski-efi` still relies on `Ski`-specific "syscalls" and can boot | ||
| `GRUB` which in turn can load kernel up to `linux-4.19`. |
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@phcoder , @trofi : I forward-ported the HP-Sim platform support incrementally up to mainline early last year. But seems like this is not well known yet. So you can actually run all (current) stable kernels since 5.4 (e.g. check a run here) and mainline (logs) in Ski. Patches are available here: https://github.com/linux-ia64/ski/tree/hp-sim-for-linux
Notice: to support this in later kernels (since 6.1, see https://github.com/linux-ia64/ski/blob/hp-sim-for-linux/linux-6.1.y/linux-6.1.76-add-hp-sim-w-o-machvec-dirty.patch#L2313) I had to patch out a check for too big memory holes to support CONFIG_FLATMEM for HP-Sim. This is a little unclean, but I believe nothing different to how this worked in earlier kernel versions.
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@phcoder : A question: what needs to be modified on a HP-Sim kernel, so it works with GRUB loaded by ski-efi? |
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| `ski-efi` is a minimal EFI for Ski to load EFI binaries | |||
| in PE32+ format. | |||
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So this could also work with ELILO then. Need to check that in time...
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Most likely elilo will choke on lack of disk drivers. You can always try. On GRUB I had to put kernel on embed ramdisk for it to work.
Just a normal hp-Sim kernel. No modifications. Note: I only checked that attempt to boot it without command line resulted in an expected failure to mount root, feel free to test more. |
This is far from fully functional EFI but this stub allows running ia64 GRUB and in turn it was able to run modified sim kernel. So it is already somewhat useful. Based on ski-bootloader and EFI specification