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feat/kernel: im stuck in the apic jungle and need help

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This commit is contained in:
Kevin Alavik 2025-06-01 13:52:33 +02:00
parent f81181ea9c
commit 322e95fe98
Signed by: cmpsb
GPG key ID: 10D1CC0526FDC6D7
10 changed files with 240 additions and 71 deletions
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18
kernel/src/emk.c
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@ -22,6 +22,7 @@
#include <sys/acpi/madt.h>
#include <sys/apic/lapic.h>
#include <sys/apic/ioapic.h>
#include <dev/pit.h>
__attribute__((used, section(".limine_requests"))) static volatile LIMINE_BASE_REVISION(3);
__attribute__((used, section(".limine_requests"))) static volatile struct limine_memmap_request memmap_request = {
@ -66,6 +67,11 @@ struct limine_mp_response *mp_response = NULL;
struct flanterm_context *ft_ctx = NULL;
#endif // FLANTERM_SUPPORT
void tick(struct register_ctx *)
{
log_early("tick");
}
void emk_entry(void)
{
__asm__ volatile("movq %%rsp, %0" : "=r"(kstack_top));
@ -187,11 +193,8 @@ void emk_entry(void)
madt_init(); // Also init MADT, to prepare for APIC
/* Disable legacy PIC to prepare for APIC */
outb(0x21, 0xff);
outb(0xA1, 0xff);
/* Setup LAPIC */
lapic_init();
outb(0x21, 0xFF);
outb(0xA1, 0xFF);
/* Setup SMP */
if (!mp_request.response)
@ -200,14 +203,17 @@ void emk_entry(void)
}
mp_response = mp_request.response;
lapic_init();
smp_init();
/* Setup IOAPIC */
ioapic_init();
/* Setup timer */
pit_init(tick);
/* Finished */
log_early("%s", LOG_SEPARATOR);
log_early("Finished initializing EMK v1.0, took ? seconds"); /* Still not usermode, so keep using log_early */
hlt();
}