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[metal] Add a uprintf() routine, for non-emergency boot logging (#905)

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* [metal] Add a uprintf() routine, for non-emergency boot logging
* [metal] _Really_ push forward timing of VGA TTY initialization
* [metal] Do something useful with uprintf()
* [metal] Locate some ACPI tables, for later hardware detection

Specifically the code now tries to find the ACPI RSDP,
RSDT/XSDT, FADT, & MADT tables, whether in legacy BIOS
bootup mode or in a UEFI bootup.  These are useful for
figuring out how to (re)enable asynchronous interrupts
in legacy 8259 PIC mode.
This commit is contained in:
tkchia 2023-10-26 05:32:20 +08:00 • committed by GitHub
parent 062b2d776e
commit ed17d3008b
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25 changed files with 999 additions and 36 deletions
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3
libc/vga/vga.internal.h
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@ -255,8 +255,7 @@ void _TtyGraphMoveLineCells(struct Tty *, size_t, size_t, size_t, size_t,
size_t);
/*
* Routines that implement emergency or system console output in graphical
* video modes.
* Routines that implement emergency console output in graphical video modes.
*/
void _TtyKlog16Update(struct Tty *);
void _TtyKlog16DrawChar(struct Tty *, size_t, size_t, wchar_t);