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Kernel: Detect APs and boot them into protected mode

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This isn't fully working, the APs pretend like they're
fully initialized and are just halted permanently for now.
This commit is contained in:
Tom 2020-06-04 09:10:16 -06:00 • committed by Andreas Kling
parent 93b9832fac
commit 0bc92c259d
9 changed files with 463 additions and 108 deletions
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10
Kernel/Arch/i386/CPU.h
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@ -41,6 +41,12 @@ class MemoryManager;
class PageDirectory;
class PageTableEntry;
struct [[gnu::packed]] DescriptorTablePointer
{
u16 limit;
void* address;
};
struct [[gnu::packed]] TSS32
{
u16 backlink, __blh;
@ -248,6 +254,8 @@ public:
class GenericInterruptHandler;
struct RegisterState;
const DescriptorTablePointer& get_gdtr();
const DescriptorTablePointer& get_idtr();
void gdt_init();
void idt_init();
void sse_init();
@ -477,8 +485,10 @@ inline FlatPtr offset_in_page(const void* address)
return offset_in_page((FlatPtr)address);
}
u32 read_cr0();
u32 read_cr3();
void write_cr3(u32);
u32 read_cr4();
u32 read_dr6();