]>
git.dujemihanovic.xyz Git - nameless-os.git/blob - kernel/kernel.c
4 #include <irq/interrupt.h>
5 #include <irq/i8259a.h>
9 struct idt_descriptor idt
[256] __attribute__((aligned(0x10)));
10 struct idtr idtr
__attribute__((aligned(0x10)));
11 extern void (*_int_handler_table
[48])(void);
20 void print_e820(struct e820_map
*mmap
, int mmap_size
)
22 kprint(" Base | Length | Type | Attrib |\n", 0);
23 kprint("------------------------------------------------------------\n", 0);
24 for (int i
=0; i
<mmap_size
; i
++) {
25 kprintq(mmap
[i
].base
);
27 kprintq(mmap
[i
].length
);
29 kprintd(mmap
[i
].type
);
31 kprintd(mmap
[i
].attrib
);
37 void kmain(struct e820_map
*mmap
, int mmap_size
)
40 kprint("Welcome to Nameless OS!\nRunning revision: ", 0);
41 kprint(GIT_COMMIT
, 0);
43 kprint("BIOS memory map:\n", 0);
44 print_e820(mmap
, mmap_size
);
45 kprint("Preparing IDT...\n", 0);
46 for (int i
=0; i
<48; i
++) {
47 idt_set_descriptor(idt
, i
, 0x8, _int_handler_table
[i
], IDT_INTERRUPT_GATE
, 0);
49 kprint("IDT prepared, loading...\n", 0);
50 populate_idtr(&idtr
, idt
);
52 kprint("Setting up interrupts...\n", 0);
56 kprint("All done\n", 0);