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[zion] Add info about APIC mapping

This commit is contained in:
Drew Galbraith 2023-08-01 11:19:48 -07:00
parent 3110087498
commit 847d37addc
1 changed files with 5 additions and 6 deletions
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11
zion/interrupt/apic.cpp
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@ -113,16 +113,15 @@ void InspectApic() {
#endif #endif
} }
// For now set these based on the presets in the following spec.
// FIXME: However in the future we should likely use the MADT for legacy
// interrupts and AML for PCI etc.
//
// http://web.archive.org/web/20161130153145/http://download.intel.com/design/chipsets/datashts/29056601.pdf
void EnableApic() { void EnableApic() {
MaskPic(); MaskPic();
// Map Timer. // Map Timer.
SetIoEntry(0x14, 0x20); SetIoEntry(0x14, 0x20);
// Skip Keyboard for now.
// SetIoEntry(0x12, 0x21);
// TODO: This also works with the interrupt numbers provided by the MADT
// I need to do further investigation on the difference in this case and
// also how to find a declarative spec for where the PCI Lines are mapped.
// PCI Line 1-4 // PCI Line 1-4
// FIXME: These should be level triggered according to spec I believe // FIXME: These should be level triggered according to spec I believe