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Add UEF as a target #5060

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@sparques sparques commented Oct 4, 2025

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jclab-joseph and others added 30 commits November 21, 2023 23:01
@jclab-joseph
feat: support uefi-amd64
0bbef2a
@jclab-joseph
revert: runtime_unix.go
e40103f
@jclab-joseph
test: add builder test for uefi-amd64 and add cpu in uefi-amd64.json
e060454
@jclab-joseph
refactor: remove machineTicks
4da9246
@jclab-joseph
fix: add default x86 features for uefi-amd64
1abdb9e
@sparques
Merge branch 'release' into feat/uefi
199ba07
@sparques
get -gc=leaking working for UEFI
5ac07e3
@sparques
get basic support for Graphics Output Protocol working
f3229e8
@sparques
add stub for scheduler=none for uefi target
2351b2e
@sparques
fix alloc crash
88562ae
@sparques
fix shadow space / UEFI ABI calling
4e80c4c
@sparques
correct symbol name for ___chkstk_ms
4d00fa4
@sparques
stub-out ___chkstk_ms again; causing more problems than it solves
ff44a76
@sparques
Add 7, 8, and 9
fed996b
@sparques
add go-friendlier GraphicsOutputProtocol() function
5290ff6
@sparques
add more idiomatic go errors for EFI_STATUSes
7bbbf1d
@sparques
add clean up code supposedly required by UEFI spec
44ec117
@sparques
shuffle code around; add unknown efi error
94d278a
@sparques
add runtime.buffered and runtime.getchar
cfd2821
@sparques
get os.Stdin working
f544394
@sparques
add Init() for graphics to maybe wrestle some functionality out of mi…
219dab7 
…sbehaving firmware
@sparques
rough first pass at serial IO protocol; not confirmed working
e0229a1
@sparques
Add support for Simple Text in Ex protocol
ed8210c
@sparques
fix heap allocation to resolve erroneous out of memory issues
7468007
@sparques
rewrite heap allocator again
9509b12
@sparques
add convenience function for getting a key via Simple Text In Ex Prot…
7a8d434 
…ocol
@sparques
implement os.Getenv(), os.Setenv(), and os.Eviron() via non-volatile …
507fb60 
…EFI variables
@sparques
get os.Args working (works with flag package!)
9595b4b
@sparques
correct Serial IO implementation
109441b
@sparques
make that whole cooperative scheduling thing work a bit better
f25fb0c
@sparques sparques mentioned this pull request Oct 6, 2025
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aykevl commented Oct 8, 2025

For this PR, I have the same reservations as for #3996:

  • It's very big, and therefore hard to review. I'd prefer to start with something that is minimal, to which we can add more over time.
  • I'd prefer if this was written like a baremetal target, and not something separate. Baremetal targets (that set the baremetal build tag etc) are easier to maintain since they can be treated similar to a microcontroller from a runtime/stdlib perspective.
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