void kmain(ol_mmap_register_t mmr)
{
textinit();
clearscreen();
println("The openLoader kernel is executing. \n");
print("Current stack pointer: ");
ol_registers_t regs = getregs();
printnum(regs->esp, 16, FALSE, FALSE);
putc(0xa);
char status = inb(0x60);
if((status & 2) == 2)
{
println("The A20 gate is open.");
putc(0xa);
}
pic_init();
setIDT();
outb(OL_KBC_COMMAND, OL_KB_INIT); // enable the keyboard
// display mmap
init_mmap(mmr);
println("Multiboot memory map:\n");
display_mmap(mmr);
#if 0
uint8_t active = ide_init(bootdrive);
ide_read(0x100, 1<<20, &bootdrive[active], 60);
uint8_t eax = ata_identify();
printnum(active, 16, FALSE, FALSE);
#endif
putc(0xa);
println("Waiting for service interrupts..");
while(1) halt();
println("End of program reached!");
endprogram();
}
// The main function
int init(unsigned long magic, multiboot_info_t* hdr)
{
setGDT();
init_heap();
#ifdef SLAB
slab_alloc_init();
#endif
textInit();
/**
* \todo Make complement_heap so that it allocates memory from pte
*/
complement_heap(&end, HEAPSIZE);
addr_t tmp = (addr_t)hdr + offset;
hdr = (multiboot_info_t*)tmp;
if (magic != MULTIBOOT_BOOTLOADER_MAGIC)
{
printf("\nInvalid magic word: %X\n", magic);
panic("");
}
if (hdr->flags & MULTIBOOT_INFO_MEMORY)
{
memsize = hdr->mem_upper;
memsize += 1024;
}
else
panic("No memory flags!");
if (!(hdr->flags & MULTIBOOT_INFO_MEM_MAP))
panic("Invalid memory map");
mmap = (multiboot_memory_map_t*) hdr->mmap_addr;
/** Build the memory map and allow for allocation */
x86_pte_init();
page_alloc_init(mmap, (unsigned int)hdr->mmap_length);
vm_init();
#ifdef PA_DBG
// endProg();
#endif
/** In the progress of phasing out */
/** Set up paging administration */
x86_page_init(memsize);
mboot_page_setup(mmap, (uint32_t)hdr->mmap_length);
mboot_map_modules((void*)hdr->mods_addr, hdr->mods_count);
/** For now this is the temporary page table map */
build_map(mmap, (unsigned int) hdr->mmap_length);
/** end of deprication */
task_init();
page_init();
printf(WELCOME); // The only screen output that should be maintained
page_unmap_low_mem();
pic_init();
setIDT();
setup_irq_data();
if (dev_init() != -E_SUCCESS)
panic("Couldn't initialise /dev");
ol_pit_init(1024); // program pic to 1024 hertz
debug("Size of the heap: 0x%x\tStarting at: %x\n", HEAPSIZE, heap);
acpi_init();
ol_cpu_t cpu = kalloc(sizeof (*cpu));
if (cpu == NULL)
panic("OUT OF MEMORY!");
ol_cpu_init(cpu);
ol_ps2_init_keyboard();
ol_apic_init(cpu);
init_ioapic();
ol_pci_init();
debug("Little endian 0xf in net endian %x\n", htons(0xf));
#ifdef DBG
#ifdef __IOAPIC_DBG
ioapic_debug();
#endif
#ifdef __MEMTEST
ol_detach_all_devices(); /* free's al the pci devices */
#endif
#ifdef __DBG_HEAP
printf("Heap list:\n");
ol_dbg_heap();
#endif
printf("\nSome (temp) debug info:\n");
printf("CPU vendor: %s\n", cpus->vendor);
if(systables->magic == SYS_TABLE_MAGIC)
{
printf("RSDP ASCII signature: 0x%x%x\n",
*(((uint32_t*) systables->rsdp->signature) + 1),
*(((uint32_t*) systables->rsdp->signature)));
printf("MP specification signature: 0x%x\n", systables->mp->signature);
}
#endif
#ifdef PA_DBG
addr_t p = (addr_t)page_alloc();
page_free((void*)p);
printf("Allocated: %X\n", p);
page_dump();
#endif
#ifdef PA_DBG
addr_t p = (addr_t)page_alloc();
page_free((void*)p);
printf("Allocated: %X\n", p);
page_dump();
#endif
core_loop();
return 0; // To keep the compiler happy.
}